THE CORVUS SERVICE-MANuAL
-- , ~ CORVUS SYSTEMS --- --~
11 and 20 Megabyte'Drive
***CORVUS SYSTEMS * * ' II/20MB Drive Service Manual ERRATA SHEET
DISCLAIMER OF ALL WARRANTIES & LIABILITIES Corvus Systems, Inc. makes no warranties, either expressed or implied, with respect to this manual or with respect to the software described in this manual, its quality, performance, merchantability, or fitness for any particular purpose. Corvus Systems, Inc. software is sold or licensed" as is:' The entire risk as to its quality or performance is with the buyer and not Corvus Systems, Inc., its distributor, or its retailer. The buyer assumes the entire cost of all necessary servicing, repair, or correction and any incidental or consequential damages. In no event will Corvus Systems, Inc. be liable for direct, indirect, incidental or consequential damages, even if Corvus Systems, Inc. has been advised of the possibility of such damages. Some states do not ..,l1n.. , tho Dvrl",,; ...... n ...... r l;n'\;bnrm nf irnnlipfi \AT;:\rr;:\nnpo;: nr li This manual is copywrited and contains proprietary information. All rights reserved. This document may not, in whole or in part be copied, photocopied, reproduced, translated or reduced to any electronic medium or machine readable form without prior consent, in writing, from Corvus Systems, Inc. Copyright© 1982 by Corvus Systems, Inc. All rights reserved. Mirror® patent pending, The Corvus Concept,'" Transporter,'" Corvus OMNINET,'" Corvus Logicalc,'" Time Travel Editing,'" EdWord,'" Constellation,'" Corvus,'" Corvus Systems,'" Personal Workstation,'" Tap Box,'" Passive Tap Box,'" Active Junction Box,'" Omninet Unit'" are trademarks of Corvus Systems, Inc. CP IM® is a registered trademark of Digital Research Inc. Apple,® Apple n® and Apple II Plus® are registered trademarks of Apple Computers, Inc. TRS-80® and Radio Shack® are registered trademarks of Tandy Corporation. SuperBrain ® is a registered trademark of Intertec Data Systems, Inc. DEC,® LSI-11,® RL01 ® and RL02® are registered trademarks of Digital Equipment Corporation. UCSD PASCAL'" is a trademark of the Regents of the University of California. IBM® is a registered trademark of IBM Corporation. Z-80® and Z-80A ® are registered trademarks of Zilog, Inc. FCC WARNING This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual, may cause interference to radio communications. As temporarily permitted by regulation it has not been tested for compliance with the limits for Class A computing devices pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference. Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference. ERRATA PAGE 10, section 4.3 Delete "Omninet," insert "Corvus OMNINET"''' PAGE 45, section 8.3.6.1 Delete "Superbrain;' insert "SuperBrain®" Delete "Superbrain and TRS-80;' insert "SuperBrain® and TRS-80®ff PAGE 53, section 9.3 Delete II Apple II +," insert II Apple II Plus®" CORVUS DEALER SERVICE CORVUS SYSTEMS 11MB AND 20MB EIGHT-INCH WINCHESTER DISK DRIVE SERVICE MANUAL This document contains three types of notations. These are, in increasing order of importance, NOTE, CAUTION, and WARNING. The NOTE indicates some action to be taken to speed or simplify a procedure. The CAUTION indicates that potential damage to the equipment or user data exists, and care should be taken to avoid this. The WARNING indicates that potential harm or injury to the service technician or operator exists, and extreme care should be taken to avoid these. CORVUS DEALER SERVICE TABLE OF CONTENTS CORVUS DEALER SERVICE TABLE Of CONTENTS CHAPTER 1 - GENERAL DESCRIPTION 1.1 Scope of Chapter ...... 1 1.2 Introduction ...... 1 1.3 Model Identification...... 1 1.4 Purpose of Equipment...... 1 1.4.1 Power Supply...... 1 1.4.2 Data Backup...... 2 1.5 Corvus Disk System...... 2 1.6 Winchester Technology...... 2 CHAPTER 2 - INSTALLATION 2.1 Scope of Chapter...... 3 2.2 Introduction ...... 3 2.3 Receiving a Drive ...... 3 2.3.1 Headlock Mechanisms ...... 3 2.3.2 Diagnostic Test...... 4 2.4 Installation Considerations...... 5 2.5 Daisy-Chaining of Disk Drives ...... 6 CHAPTER 3 - OPERATION 3.1 Scope of Chapter ...... 8 3.2 Introduction ...... 8 3.3 Controls...... 8 3.3.1 Front Bezel LEOs...... 8 3.3.2 Front Bezel Switches...... 9 3.4 Power-On Sequence ...... 10 3.5 Environmental Requirements ...... 10 3.5.1 Static Electricity ...... 10 3.5.2 Line Noise...... 10 3.5.3 Temperature ...... 10 3.6 Periodic Maintenance ...... 10 3.6.1 Regular Checks ...... 11 3.6.2 Groundstrap ...... 11 CHAPTER 4 - DRIVE DESCRIPTION 4.1 Scope of Chapter ...... 12 4.2 Introduction ...... 12 4.3 Power Supply ...... 12 4.3.1 CSI00 ...... 12 4.3.2 CP129 ...... 12 4.3.3 CP140 ...... 12 4.3.4 CP411 ...... 16 4.4 dc Power Ca hies ...... 16 4.5 Definition of Terms ...... 16 4.5.1 Disk Sealed Mechanism ...... 18 4.5.2 Controller Firmware ...... 18 4.5.3 Data Storage ...... 18 CORVUS DEALER SERVICE 4.5.4 Headlock Devices ...... 19 4.5.5 Preamp PCA ...... 19 4.5.6 Drive Electronics Revision ...... 19 4.6 Power-Up ...... 20 ru" D'T'l:D I!' 'TUrnDV nr nDrD "'TTnlll. T ...... A.A ...... &. .& ...... v .&.&.a...... """.&'-.& '-'& '-' ...... "'a..a..a.'-J ..... 5.1 Scope of Chapter ...... 21 5.2 Introduction ...... 21 5.3 Servo Electronics ...... 21 5.3.1 Servo Tracks ...... 21 5.3.2 Servo Control Signals ...... 24 5.3.3 Servo Operation ...... 24 5.4 Read/Write Electronics ...... 24 5.4.1 Read Operation ...... 25 5.4.2 Write Operation ...... 25 5.5 Controller/Logic Electronics ...... 26 5.5.1 Host to Drive Handshaking Controi Signais ...... 26 5.5.2 Controller During Seek Command ...... 27 5.5.3 Controller During Read and Write Commands ...... 27 5.6 Backplane /Motherboard PCA ...... 28 5.7 Preamp PCA ...... 28 5.8 Paddle board PCA ...... 30 5.9 Interface PCA ...... 30 CHAPTER 6 - DISASSEMBLY 6.1 Scope of Chapter ...... 31 6.2 Introduction ...... 31 6.2.1 Tools Required ...... 31 6.3 Metal Cabinet ...... 31 6.3.1 Top Cover ...... 31 6.3.2 Rear Bezel...... 31 6.3.3 Backplane Cover ...... 33 6.3.4 Cabling ...... 33 6.3.5 Drive Mechanism ...... 33 6.3.6 Power Supply ...... 33 6.3.7 Front Bezel ...... 33 6.4 Stand-Alone Units ...... 33 6.4.1 Disassembly (CSIOO) ...... 33 6.5 Drive Electronics Removal and Disassembly ...... 33 6.5.1 Card Set ...... 34 6.5.2 PCA Replacement ...... 34 CHAPTER 7 - ADJUSTMENTS AND MAINTENANCE 7.1 Scope of Chapter ...... 35 7. 2 Introduction ...... 35 7.3 Power Supply Voltage Check and Adjustment ...... 35 7.3.1 CP140 and CP411 ...... 35 7.3.1.1 Voltage Check ...... 35 7.3.1.2 Voltage Adjustment ...... 36 ii CORVUS DEALER SERVICE 7.3.2 CS100 ...... 36 7.3.2.1 Voltage Check ...... 36 7.3.2.2 Voltage Adjustment ...... 36 7.3.3 CP129 ...... 37 7.3.3.1 Voltage Check ...... 37 7.3.3.2 Voltage Adjustment ...... 37 7. 4 Servo Mechanism...... 38 7.4.1 Servo Adjustment ASM 310176 and ASM 310221 ...... 38 7.4.2 Servo Adjustment ASM 310006 ...... 40 7.5 Brake Mechanism ...... 41 7. 5.1 Brake Adjustment ...... 41 CHAPTER 8 - DEALER SERVICE DIAGNOSTICS 8.1 Scope of Chapter ...... 43 8.2 Introduction ...... 43 8.3 Drive Diagnostics RevB ...... 43 8.3.1 CRC ...... 43 8.3.2 EXR ...... ~. 43 8.3.3 UPD ...... 43 8.3.4 VSN ...... 44 8.3.5 FMT ...... 44 8.3.6 PRM ...... 44 8.3.6.1 MUX ...... 44 8.3.6.2 DRIVE ...... 45 8.3.7 SET ...... 45 8.3.8 QUIT ...... 45 8.4 Controller Diagnostic ...... 45 8.4.1 General Description ...... 46 8.4.2 Controller Diagnostic Commands ...... 46 8.4.2.1 A) Abort Diagnostic ...... 46 8.4.2.2 B) Macro Menu ...... 46 8.4.2.3 C) Change Slot Number ...... , ...... 47 8.4.2.4 D) Download Diagnostic ...... 47 8.4.2.5 I) Analyze Servo ...... 47 8.4.2.6 J) Single Do Seek...... 47 8.4.2.7 L) Full Cylinder Loopseek ...... 48 8.4.2.8 P) Print Quiet Summary Report ...... 48 8.4.2.9 Q) Sector Quiet Program ...... 48 8.4.2.10 S) Read Scan Disk ...... 48 8.4.2.11 n Single Cylinder Seek Scan ...... 49 8.4.2.12 X) Write Scan Disk ...... 49 8.4.2.13 Y) Rezero Heads ...... 49 8.4.3 Error Codes ...... 49 8.5 Burn-In Program ...... 49 8.5.1 C)ONT ...... 50 8.5.2 L)IST ...... 50 8.5.3 R)ESTART ...... < •••••••••••••••••••••••••••••••• 50 8.5.4 Q)UIT ...... 50 8.6 Read Burn-In Results ...... 50 iii CORVUS DEALER SERVICE 8.7 Track Diagnostic...... 51 8.7.1 C)ONT ...... 51 8.7.2 L)IST ...... 51 8.7.3 R)ESTART ...... 51 8.7.4 Q)UIT ...... 51 Po Po nrivp ni;:\ono.::tir.:: Rpv A ______...... 51 8.8.1 ADJ ...... 52 CHAPTER 9 - FAULT ISOLATION PROCEDURES 9.1 Scope of Chapter ...... , .. , . , ... 53 9.2 Introduction ...... 53 9.3 Tools ...... 53 9.4 Error Codes...... 53 9.4.1 Interpreting Error Codes ...... 53 9.5 Troubleshooting Procedures ...... 57 9.5.1 On-Site Checks ...... 57 9.5.2 Isolate the Problem ...... 57 9.5.3 Drive Not Ready ...... 58 9.5.3.1 Interface ...... 58 9.5.3.2 Controller Firmware ...... 58 9.5.3.3 Power Supply Voltages ...... 58 9.5.3.4 RESET Line ...... 58 9.5.3.5 Drive Electronics ...... 59 9.5.3.6 Drive Sealed Mechanism ...... 60 9.5.4 Link Inoperative ...... 60 9.5.4.1 Check Link Action ...... 61 9.5.4.2 Power Supply ...... 61 9.5.4.3 CRC Test ...... 61 9.5.4.4 Servo Test ...... 62 9.5.4.5 Controller Firmware ...... 62 9.5.4.6 Boot ROM ...... 62 9.5.4.7 Interface Components ...... 62 9.5.4.8 Drive Initialization ...... 62 9.6 Final Adjustments and Tests ...... 62 9.6.1 Proper Headlock Operation ...... 62 9.6.2 CRC Test ...... 63 9.6.3 Servo Check and Adjustment ...... 63 9.6.4 Install and Test Mirror ...... 63 9.6.5 RESET Line ...... 63 9.6.6 CRC Test ...... 63 9.6.7 Power Supply...... 63 9.6.8 Burn-In Test ...... 63 9.7 Troubleshooting Flowchart ...... 65 9.8 Common Symptoms and Recommended Solutions ...... 66 Appendix A Glossary...... 72 Appendix B Parts List for Eight-Inch Drives ...... 74 Appendix C PCA Compatibilities ...... 76 Appendix D Assembly and Schematic Drawings ...... 77 Index .... " ...... 144 iv CORVUS DEALER SERVICE LIST OF ILLUSTRATIONS AND TABLES CORVUS DEALER SERVICE LIST OF ILLUSTRATIONS AND TABLES ILLUSTRATIONS Figure Page 2-1 Manual Carriagelock Location...... 4 2-2 CORCOM Unit...... 5 2-3 Rear Bezel Components ...... , ...... 6 3-1 Front Bezel...... 8 3-2 Function Switches ...... 9 4-1 Stand-Alone Drive with CS100 Power Supply ...... 13 4-2 Stand-Alone Drive with CP129 Power Supply ...... 14 4-3 White Cabinet with CP140 Power Supply ...... 15 4-4 Data Configuration...... 16 4-5 Disk Drive Sealed Mechanism...... 17 4-6 Sector Interleaving ...... 18 4-7 Peamp PCA Location ...... 20 5-1 Servo Track Relationship ...... 22 5-2 Tri-Bit Signal ...... 22 5-3 Corvus RevB Block Diagram ...... 23 5-4 Read/Write PCA Jumper Location ...... 25 5-5 NRZ and MFM Data Formats ...... 26 5-6 RevA Cabling ...... 29 5-7 RevB Cabling ...... 29 6-1 Access Door, Metal Package...... 32 7-1 dc Power Cable Connection ...... "... 35 7- 2 Drive Configuration for Servicing ...... 38 7-3 PES Signals Improperly and Properly Adjusted ...... 39 7-4 Mechanism Adjustment ...... 42 9-1 Location of R3 ...... 59 9-2 PES as Result of Good and Bad Servo Tracks ...... 61 9-3 Checking Proper Headlock Operation ...... 64 TABLES Table Page 1-1 Unit Address Options...... 7 9-1 Decimal Disk Error Codes ...... 54 9- 2 Hexidecimal Disk Error Codes ...... 55 9-3 Signed Decimal Disk Error Codes ...... 56 v CORVUS DEALER SERVICE SPECIFICATIONS CORVUS DEALER SERVICE SPECIFICATIONS Operational Specifications 11MB 20MB Disks per Drive 2 3 Data Surfaces per Drive 3 5 Servo Surfaces per Drive 1 1 Heads per Surface 1 1 Data Heads 3 5 Servo Heads 1 1 Number of Data Cylinders/Drive 358 388 Sectors per Track 20 20 Track Density (TPI) 300 300 Bytes per Sector (Formatted) 512 512 Bytes per Track (Formatted) 10,240 10,240 Bytes per Drive (Formatted) 10.9MB 19.7MB Bit Density (BPI) 5,868 5,868 Average Latency (ms) 8.3 8.3 Average Access Time (ms) 35 35 Maximum Access Time (ms) 65 65 Maximum Access Time, Single-Track (ms) 6 6 Data Transfer Rate (Kb/s) 648 648 Recording Format MFM MFM Rotational Speed (RPM) 3,600 3,600 Start Time (s) 15 25 Stop Time (s) 30 30 Physical Dimensions (White Cabinet) Height (In/em) 6.375 /16.19 Length (In/Cm) 23.0/58.42 Width (In/em) 14.5/36.83 Weigh t (L bs/Kgs) 48/22 Environmental Requirements Operating Temperature (FIe) 500 to 1000 /100 to 370 0 0 0 0 Non-Operating Temperature (FIe) -40 to 140 / -40 to 60 Operating Relative Humidity (%) 10 to 80 Non-Operating Relative Humidity (%) 10 to 90 Operating Altitude (ft) -1,000 to +10,000 Operating Vibration (G) 0.1 (5 cps linear increase to 100 cps) Non-Operating Vibration (G) 1.0 (2 cps linear increase to 100 cps) Non-Operating Shock (G) 5.0 for 5ms duration vi CORVUS DEALER SERVICE Power Requirements Line Voltage, Domestic (VAC) 100-120, 48Hz-62Hz, Single-Phase Line Voltage, Foreign (VAC) 220-240, 48Hz-62Hz, Single-Phase Power Consumption (Watts) 250 Line fuse (Amperes) [ __ .. ",,' 7 ..... ,,' 7 j,,'-'.L -,-vv W - ..L":"'V Y ":1:. V for 220V-240V 2.0 Reliability Mean Time Between Failure (tv1TBF) 10,000+ operational hrs., vv"'ithin above requirements Maximum Repair Time Not more than 0.5 hrs. vii CORVUS DEALER SERVICE CHAPTER 1 GENERAL DESCRIPTION CORVUS DEALER SERVICE CHAPTER 1 GENERAL DESCRIPTION 1.1 Scope of Chapter This chapter outlines the purpose of the II-megabyte and 20-megabyte disk drives. Also provided is a brief description of the drive packaging and layout, and a definition of Winchester technology. Read the manual completely before attempting any service procedures. 1.2 Introduction This document contains procedures and data required to service Corvus II-Megabyte and 20-Megabyte eight-inch Winchester disk drives. Corvus five-inch Winchester drives and floppy drives are covered in separate service manuals, as are networks and peripheral equipment. Troubleshooting and repair of all equipment will be addressed on a modular level. There exists two versions of the 11MB Corvus drive: the Revision A (RevA) and the Revision B (RevB). The 20MB drive was manufactured in a Revision B only. Service procedures for the eight-inch Corvus disk drives will apply to both the RevA and RevB drives, except where noted. Specific differences will be outlined later in this manual. Also included in this publication is documentation on the Dealer Service Diagnostic Utility diskette supplied to each service center. The utilities provide for burn-in/reliability testing, adjustment, and troubleshooting of all Corvus disk drives. Installation and operation of the Corvus disk drives will not be covered in detail in this document. Refer to the "Corvus Systems Installation Guide" and "Corvus Systems User Guide" for information on these subjects. 1.3 Model Identification The Corvus eight-inch disk drives are very similar in appearance. Before any service procedures are attempted, the drive must be identified as to the model and serial number. Locate the serial number tag on the rear bezel. The following is a sample serial number to be found on a Corvus eight-inch drive: 142-C350/M and is decoded below: 14 represents the week of manufacture (14 for March/April) 2 represents the year of manufacture (2 for 1982) C represents a 20 MB eight-inch drive (B for a 11MB) 350 represents the serial number of that weeks' manufacture /M represents that the drive was shipped with an internal mirror Whenever communicating with Corvus in reference to Corvus products, include the serial number of the equipment involved. 1.4 Purpose of Equipment The Corvus disk drive is a high-speed, intelligent mass-storage peripheral disk device designed to provide the host microcomputer with storage of digital information for instant retrieval at the request of the host system. The Corvus disk system consists of the disk drive with its 2-80 Intelligent Controller, power supply, host interface electronics, 34-pin interface flat-cable and Corvus Utility diskettes. 1.4.1 Power Supplies The power supply operates from either 110-120VAC or 220-240VAC, 50Hz or 60Hz single-phase power. Early models of the Corvus disk drive were stand-alone units. The latest model uses a white cabinet enclosure which contains the disk mechanism, cooling fan and power supply. 1 CORVUS DEALER SERVICE 1.4.2 Data Backup Data backup is accomplished via the Corvus Mirror. The Mirror converts the data from digital format to video format which is then stored on video cassette tape, using one of many commercial VCRs. The Corvus Mirror option comes internal to the drive when it is ordered. or added as an external device later. Mirror troubleshooting and repair is covered in the Corvus Mirror Service Manual. 1.5 Corvus Disk Systems The Corvus Mass-Storage Disk System utilizes a sealed Winchester disk mechanism manufactured by International Memories, Inc. (1M!). The drive, with its Intelligent Controller, is designed as a plug-in device, requiring minimal software setup. Interfacing to host computers is via 34-pin flat-cable interface. Installation and setup procedures are covered in the corresponding user guide for the appropriate computer system. Early versions of the eight-inch Corvus Disk System consist of the sealed drive mechanism with drive electronics, and power supply, either separate or on a common baseplate. Some Rev A and RevB drives are configured this way. Recent, upgraded versions of the Corvus package consist of a white cabinet housing the sealed disk mechanism and drive electronics, power supply, Mirror (if that option is ordered), fan and cabling. Most RevB drives use this configuration. Located in the bottom of the sealed unit, the PCA card cage contains the drive electronics responsible for servo control, read-write controi, microprocessor interfaceicontrol. External to the drive, the interface card and cable transfer data to and from the host computer. The Intelligent Controller PCA and internal Mirror PCA can be viewed through the access door in the bottom of the drive cabinet. Only the Mirror PCA may be removed through this door. The Rev A sealed mechanism was manufactured in II-megabyte capacities only. The RevB is manufactured in both 11- and 20-megabyte capacities. There are no fundamental differences in the sealed mechanisms of the RevA and RevB 11MB units. This is not to say that all 11MB units are identical. Each unit should be inspected to determine its particular designation. Some of the drive electronics are different and are not compatible between RevA and RevB. All Corvus disk mechanisms have some sort of carriage locking device which restrains the heads. Inherent in the Winchester drive design is the necessity for the heads to rest on the platter surface when the drive is powered off. Because of this contact, the heads must be parked safely off of the Data Area, onto an Outer Guardband Area of the platter surface. This is accomplished by either of two methods. Earlier versions of the drive used a manual headlock device, which is identified by a screw located on the side of the mechanism. Current versions of the drive use an electromechanical headlock which automatically secures the heads after the power is removed from the drive. L6 Winchester Technology The Corvus disk drive uses the IMI Winchester disk mechanism. This new generation of disk drive utilizes a sealed environment, and low-load, low-mass, aerodynamically-suspended read-write heads which rest directly on the disk surface after powerdown. It is the contaminant-free environment that allows for reduction in clearance between head and recording media. This results in the heads riding on a 18-micron cushion of air. Since bit density is closely related to head-media clearance and head mass, disk drives utilizing Winchester technology can achieve large storage capacities at a premium of space. An added advantage of the Winchester sealed mechanism is that it requires no regular maintenance. 2 CORVUS DEALER SERVICE CHAPTER 2 INSTALLATION CORVUS DEALER SERVICE CHAPTER 2 INSTALLATION 2.1 Scope of This Chapter Installation and operation procedures for the Corvus disk system are outlined in the "Corvus Disk Systems Installation Guide" and "Corvus Disk Systems User Guide". This chapter discusses installation of the disk drive hardware only as it applies to environmental requirements. 2.2 Introduction Each drive, when it is received, should be checked for shipping damage, and tested for proper function. This chapter contains these procedures as well as those for installing single drives and multiple-drive systems. 2.3 Receiving a Drive Any time a drive is received, several checks should be performed before the drive is installed at the customer site. Each Corvus disk drive should be carefully unpacked and checked for shipping damage. External evidence of rough handling may be symptomatic of damage to fragile mechanisms within the drive. NOTE: Any damage claims must be reported to the local office of the shipper so an inspection may be made, and a damage report filed. Also, if the damaged equipment is a new product, Corvus Order Processing Department must be contacted for proper return procedures. If the damaged equipment is a recently serviced product being returned under an RMA number (Return Merchandise Authorization number), contact Corvus Customer Service Department for proper return procedures. The disk drive mechanism in the Corvus Disk System is an extremely sensitive device. Subjecting the drive to a one-g force (one gravity) will be amplified and transmitted to the heads, impacting them onto the platter with a 100-g force. This necessitates very careful handling of the drive mechanism both in shipping and operation. When a drive is received, check that all chips in the Z-80 Controller PCA are seated well in their sockets. Chips coming loose during shipping account for a large number of failures upon receipt. 1) Locate the access door in the center of the drive basepan. 2) Remove the two allen screws and open the door. The Controller/Logic PCA is located directly behind the access door, facing outward. 3) Press firmly on all socketed chips, seating them securely into their sockets. 4) Replace allen screws. 2.3.1 Headlock Mechanisms All eight-inch sealed disk mechanisms have a locking device to ensure that the heads are secured during shipment. Early models use a manual locking device consisting of a locking screw accessable from the side of the mechanism. This screw must be used to lock the heads prior to shipping or unlock prior to use: (Turn the screw Clockwise to unlock the heads. Turn the screw Counter-Clockwise to lock the heads. Do not use excessive force when turning the headlock screw.) Current models use an automatic electro-mechanical headlock which secures the heads every time power is removed from the drive. CAUTION: If the disk drive has a manual lock, the lock must be released before any attempt is made to operate the disk drive. Attempting to operate the drive before unlocking the heads will cause the servo electronics to be damaged. Do not transport the drive with the heads unlocked. This can cause the heads to impact onto the disk surface, damaging both, if the unit is jarred. Manual locking drives must be FULLY unlocked before use. This requires the locking screw to be turned approximately 17112 turns clockwise. If tension is felt, STOP IMMEDIATELY and verify that the heads are unlocked by tilting up the rear of the drive mechanism (the end with the Backplane/ Motherboard). If the heads slide freely across the disk, the heads are unlocked. 3 CORVUS DEALER SERVICE CAUTION: (continued) To lock the heads, tilt up the front of the drive mechanism (the end opposite the Backplane/ Motherboard) to return the heads to the outside edge of the disk surface. While holding the drive in this position, tighten the locking screw by turning it counter-clockwise approximately 17V2 turns. If tension is felt, STOP IMMEDIATELY and verify that the heads move no more than Va" when the rear end of the drive is tilted up. Over-tightening or over-loosening of the headlock screw may result in destruction of the headlock mechanism, rendering the sealed unit defective. Care must be exercised whenever tightening or loosening this screw. n{~------~l/ ~ ______~ ______~C~ARRIAGELO~C~K ______~ ______~ t------...... -U-N-LO-C-K~ ( ~) P.L-O-C-K-....."I------t L_ ~O_ N~! ~~E_E~~ES~~E ~2I!C!_J Figure 2.1 Manual Carriage Lock Location 2.3.2 Diagnostic Test The drive should be subjected to a thorough diagnostic test and exercise as outlined in Chapter 8 ("Diagnostics") of this manual, A CRC-Format Check should be done for the drive, as well as verifying the Drive Parameters (specifically the Spare Track Table and the Virtual Drive Offset Table). A new drive may be shipped with up to four tracks spared, and considered operational. When the Drive Parameters and the VDO Table is first checked, these parameters should be noted, recorded on a label, and attached to the drive. In the event that the drive format is disturbed in shipment, it may be necessary to reformat the drive. The drive will be reformatted with default parameters (Spare Track Table: no tracks spared. VDO Table: Drive 1=0. Interleaving Spec: 9). This will cause no problems as long as the drive has never had tracks spared. If the drive has ever had a track spared, the Spare Track Table must be reconstructed, as well as the VDO Table (20-MB only) before the data is restored. Knowing what tracks must be spared will speed this procedure. Note on the label any future tracks spared. Installation and setup procedures are covered in the "Corvus Installation Guide" and "Corvus User Guide" for the particular system. These aspects will not be addressed further in this document. 4 CORVUS DEALER SERVICE 2.4 Installation Considerations All electronic equipment needs cooling and the Corvus Disk is no exception. When installing, do not "pigeon-hole" the drive. There should be sufficient open air both front and rear. Place the drive on a levet hard surface without foam or carpeting which may restrict airflow. Be sure the proper line voltage has been selected. Referring to figure 2-2, proceed with the following instructions: Figure 2-2. CORCOM Unit L Remove power cord from CORCOM unit at rear of drive. 2. Slide plastic door to the left, uncovering fuse. 3. Remove fuse. 4. Using a pair of needle-nose pliers, remove voltage selection PCB from just below fuse holder. 5. Position voltage selection PCB so that proper voltage is visible when PCB is inserted. 6. Reinsert fuse, using correct value: 4A/IOO-120VAC, 2A/220-240VAC. 7. Slide plastic door to right. 8. Connect power cord to CORCOM unit, and to power outlet. 5 CORVUS DEALER SERVICE Connect the interface cable between the connector on the interface card in the host computer, and the PROCESSO~ connector on the rear bezel of the white cabinet Corvus disk drive. Be sure the "one" edge (edge with dark stripe) is to the right, when facing the rear of the drive unit. For instructions regarding host interface installation and connection, refer to the appropriate "Corvus Systems User Guide". • • Connects to Connects Video Remote to Interface Control Card Air Flow Slots Connects Connects Connects to Video to Add-on toAcCable Recorder Drive (if any) figure 2-3. Rear Bezel Components Check that all four front panel switches are in the correct position. Run your finger along from right to left, under the switches. All switches should be to the left, unless the disk drive is connected to a Constellation Multiplexer system, or to a DEC LSI-II computer. If 50, the appropriate switches should be set. Locate the power switch beneath the front bezel, and turn it on. The drive will begin to spin up to speed, and all Light Emitting Diodes, or LEOs (front bezel indicator lights) will come on, steady. On drives with late model Controller ROMs the BUSY LED will begin to flash. After approximately thirty seconds, the FAULT LED will go out, and the heads will rezero. LED activity will briefly alternate between READY and BUSY, after which the drive will set the READY signal, and all LED activity wili cease, with the READY LED on. The disk drive is now ready for communication with the host system. For complete installation and setup procedures, refer to the appropriate "Corvus Installation Guide" and "Corvus User Guide". 2.5 Daisy-Chaining of Disk Drives A maximum of four physical disk drives can be interfaced to the host computer. A maximum of 80 megabytes of on-line storage may be achieved by daisy-chaining four 20MB drives. This is accomplished by using a common input/output interface bus, commonly called daisy-chaining. A special add-on drive flat cable is available from Corvus specifically for this purpose. One add-on drive cable is required for each additional disk drive in the system. 6 CORVUS DEALER SERVICE Changing the unit-select switches (positions 1-3) on the drive Z-80 Controller PCA for each add-on drive is required when daisy-chaining drives. Switches 1-3 are a binary-count with the first drive in the chain set to drive #1. Additional drives should be set accordingly, taking into account that a 20MB drive is two logical drives. Not all systems refer to 20MB drives as two logical drives (CP/M does not). Refer to the Corvus User Guide for the appropriate computer system. Table 1-1. Unit Address Options DRIVE SW1 SW2 SW3 ADDRESS NOT USED 0 ON ON OFF 1 ON OFF ON 2 ON OFF OFF 3 OFF ON ON 4 OFF ON OFF 5 OFF OFF ON 6 OFF OFF OFF 7 SWITCH CLOSED = ON SWITCH OPEN = OFF 7 CORVUS DEALER SERVICE CHAPTER 3 OPERATION CORVUS DEALER SERVICE CHAPTER 3 OPERATION 3.1 Scope of Chapter This chapter describes operator controls and their uses as applies to troubleshooting and repair of the drive. Front bezel control switches and Light Emitting Diodes are described, and their functions detailed. Environmental requirements are discussed, and recommended regular checks for the drive are given. Operation and initialization instructions are detailed in the "Corvus Systems User Guide" for the appropriate host operating system. 3.2 Introduction Since the stand-alone drives do not have indicator lights or switches to read or manipulate, this chapter will deal only with the white cabinet models that do. These disk drives have controls that allow the operator to easily interface the drive to many single-user or network systems. These must be set properly for each different system configuration in order for the drive to function properly. Indicator LEOs on the front bezel display the state of the drive, and help in diagnosing the condition of the drive at any time. 3.3 Controls Operator controls are located on the front bezel of the enclosure. Three LEOs monitor the current state of the drive Controller. Four function switches are located under the LEOs. Rear bezel components consist of power cord, fuse and power selection unit (CORCOM), video connectors, host processor connector and daisy-chained drive connector. 3.3.1 Front Bezel LEOs The LEOs are labeled READY, BUSY, and FAULT. During the power-up sequence all LEOs are on, and BUSY blinks while the drive motor reaches operating speed. When the motor has reached speed, all LEOs will go off. BUSY will flicker, and if the drive passes the self-test the READY signal will be set, and the READY LED will be on, and the BUSY and FAULT LEOs will be off. Indicator Lights * * - -. --- -. - • * *. CORVUS SYSTEMS __ '_ __ _ I .!/~/~~ Switches ~'-' On Off ._ ElIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII L- Power Switch Air Flow Slots Figure 3-1. Front Bezel 8 CORVUS DEALER SERVICE During normal operation, the READY LED is active when the drive is ready to receive a command from the hos~ processor. The BUSY LED is active when the drive is currently executing a command received from the host processor: The FAULT LED is active when a fault has been detected. The FAULT LED is an indicator of drive malfunction or operational error, although some software may cause this LED to light during normal operation. 3.3.2 Front Bezel Switches 1 he iunctIOn sWItches are locatea below the Lt.Us on the iront bezei. 1 hese are (irom iett to nght) LSI, iviuX, FORMAT, RESET. During normal operation, in a single-user system without an LSI-II computer, all switches should be set to the left. All switches except for the RESET switch are software switches. The Controller ROM routine polls the switch at power-up to ascertain system configuration. Only the RESET switch directly affects the hardware. LSI-11 MUX FORMAT RESET I • I I Normal}! J~~rmaSl:ormr~ LSl-11'lsingle FormatJ' Reset Multiplexer Figure 3-2. Function Switches The RESET switch is a spring loaded, momentary-contact toggle switch. Toggling this switch initiates a reset signal which resets the intelligent controller in the drive. The heads re-zero and disk Controller Firmware is loaded in from the disk into the Controller RAM. The drive is then ready to accept new commands from host processor. The FORMAT switch is a two-position switch; left position is normal, right position is ON. This switch must be on for a bottom-level format to be executed. The switch alone will not cause the drive to be formatted. Also, when the drive is powered on, or the RESET switch operated, the Controller will check the status of this switch. If the switch is off, the Controller code is read from the Controller Firmware area of the disk into the on-board ram of the Z-80 Controller in the drive. If the switch is on, no Controller code is read, and the drive comes READY if the self-test has succeeded, and the heads re-zero. 9 CORVUS DEALER SERVICE The MUX switch is also a two-position switch; left position is single-user position, right position is for use with a Constellation Network Multiplexer. System configuration software polls this switch to determine if a Constellation Multiplexer is attached, and the Multiplexer polling routine is to be used. The LSI switch is a two-position switch; left position is normal, right position is for use with DEC System LSI-II. System configuration software polls this switch to determine if a DEC LSI-II computer is connected to the Corvus. If the switch is on, Controller code is loaded from the Controller Firmware into the Controller RAM at boot time, which causes the Corvus to emulate DEC-System RLOI and RL02 disk drives. 3.4 Power-On Sequence No specific sequence need be followed when powering on the Corvus Disk System, with one exception. If the Corvus disk drive is used with an Omninet local network, power on the Disk Server first. Next power on the disk drive, then the host computer. This procedure supersedes all other procedures that may be found in previous Corvus publications. 3.5 Environmental Requirements All working environments contain possible hinderances to proper operation of electronic equipment. The following are some environmental problems and their solutions. 3.5.1 Static Electricity Static voltages of thousands of volts can be generated in most office environments. If a system shows irregularities whenever an operator comes in contact with the host computer, network or peripheral equipment, supporting table or surface, static should be suspect. Static is most easily generated in a cool and dry environment, usually associated with cold weather. Since increased humidity helps prevent static electricity buildup, some type of humidifying device can be helpful. Ideal relative humidity is 70 percent to 75 percent. 3.5.2 Line Noise Electrical noise on the power line is a major cause of inconsistent equipment operation. Voltage spikes, "brownouts" and dropouts as well as low line voltage are just some of the common causes of drive malfunction. Located in the CORCOM power selection unit is a line filter capable of handling dropouts of up to three complete power cycles. If power is suspect, the problem may lie in poor continuity of the building wiring, noisy or high power-consumption devices on the same circuit, or poor external supply to the building. Power can be improved by including a constant voltage regulator or isolation transformer in the power circuit. The constant voltage regulator will help minimize the effect of line voltage fluctuations on the Corvus Drive, while the isolation transformer will be effective in protecting the Corvus Drive from line noise caused by other high-load electrical equipment such as photocopy machines, heating and cooling equipment, elevators, etc. 3.5.3 Temperature Although in most environments, the disk drive needs no actual warm-up time, there are restrictions that the drive must operate within (see specification chart at beginning of this manual). The temperature-change maximum for the Corvus disk is 15 degrees fahrenheit per hour. 3.6 Periodic Maintenance Inherent in the design of the Winchester-technology disk devices, is the freedom from the need for regular preventive maintenance. The sealed disk mechanism of the Corvus disk drive requires no maintenance, and contains no field-serviceable components. CAUTION: Since contamination of the atmosphere in the mechanism necessitates replacement of the unit, removing the cover to the sealed mechanism voids all warranties. 10 CORVUS DEALER SERVICE 3.6.1 Regular Checks Each time the white cabinet is opened, check the power supply voltages and drive servo action for tolerances to verify that they are within specified tolerances (refer to chapter 7 for adjustment procedures). Power supply voltages and servo action will change with time, and should be checked periodically. Due to slight oxidation buildup on connectors, reseating flatcable connectors and power connectors periodically will also help Insure relIabIlity. 3.6.2 Groundstrap Located on the lower end of the motor spindle of the drive mechanism, a spring-tension arm keeps the static discharge brush in contact with the spindle. Although initial design studies maintained this brush (or grounds trap) as a necessity, further design considerations resulted in the elimination of it. This resulted in some drives being manufactured with groundstraps, and some without. Drives with grounds traps should retain them, while those without need not have them added. The Corvus Disk System is designed to be used in an office environment, and hence, noise levels have been kept to a minimum. While every effort has been made to quiet the operation of the disk, some mechanical noise is inherent to all disk mechanisms. During normal operation of the eight-inch disk drives a high-frequency squeal or chatter may be heard emitting from the static discharge brush. If a brush is making noise, it should be bent to increase contact tension and taped to help dampen vibrations. Be careful not to cover the fan intake, which will result in reduced cooling of the drive electronics and overheated components. A faulty grounds trap, vibrating in this manner, can sometimes be the cause of hardware errors such as CRC errors and data errors, due to the build-up and sudden release of static charge from the spindle. 11 CORVUS DEALER SERVICE CHAPTER 4 DRIVE DESCRIPTION CORVUS DEALER SERVICE CHAPTER 4 DRIVE DESCRIPTION 4.1 Scope of Chapter This chapter details the components of the Corvus disk drive, and the function of each. Some terms are defined to provide a clear foundation for the following descriptions. 4.2 Introduction The Corvus disk drive is divided into five functional areas; Power Supply, Disk Sealed Mechanism, Servo Electronics, Read/Write Electronics, and Controller Electronics. Each of these constitutes a module and is field-replaceable as such. 4.3 Power Supply The Corvus disk drive comes with a power supply which provides all voltages required by the disk sealed mechanism. Four different power supplies have been used with the eight-inch drive. In some early models, before the white cabinet was used, the power supply was either separate or on a common baseplate with the drive. All supplies use the same dc power connector to connect to the drive mechanism. 4.3.1 CS100 The CSIOO is a switching power supply, which shares a common baseplate with the drive unit. It is contained in a black plastic cabinet, nearly a cube in shape, and has the power switch, FORMAT and MUX switches and CORCOM ac power receptacle integrated into the rear panel. It is the only Corvus power supply to have an integral cooling fan. All voltages are adjusted simultaneously with one potentiometer, R25. If only one of the voltages is out of tolerance, the supply must be replaced. the CSIOO is discontinued, and if a replacement is needed, the CP129 should be used. 4.3.2 CP129 The CP129 is a fully enclosed, separate stand-alone unit. The CP129 is contained in a black, rectangular metal case. The power switch is located on the end of the supply, and a dc power cable connects to the disk mechanism. All voltages on the CP129 are adjustable. 4.3.3 CP140 The CP140 is an open-chassis power supply used in early models of the enclosed Corvus disk cabinet. Three types of the CP140 exist: the CP140-10358, the CP145/M120-10463, both of which have a five-wire transformer primary ac wire harness, and the CP140/MIIO-I0530, which has a six-wire transformer primary ac wire harness. All are black. The CP140 power supplies were manufactured with two different bolt patterns for securing it to the basepan. Because of the different ac primary wire harnesses and mounting bolt patterns, some of these models are not directly interchangeable. Three of the voltages are adjustable; use RIO to adjust -5V, R for +5V, and R13 for +12Y. WARNING: This applies to systems using power supplies CP140-10358 or CP145/M120-10463 having the five-wire transformer primary ac wire harness. " replaced byelthera CP140/M110-10530 or CP411 using the six-wire transformer primary ac wire hamess, be sure that the CORCOM power se/ectlonillne fIIterlacwlre harness assembly Is replaced by part number 8010-08071, and ac power switch Is replaced by the assembly number 8010-08067. If one Is not already In place, put a warning sticker on the transformer: "IF THIS POWER SUPPLY IS REPLACED WITH MODEL CP140-M110 OR CP411, REPLACE LINE FILTER ASSEMBLY WITH TYPE 8010-08071 AND POWER SWITCH WITH TYPE 8010-08067 TO PREVENT SHOCK HAZARD" The ac CORCOM filter assembly consists of the CORCOM unit (on the rear bezel), cabling and connectors to the power switch and power supply primary wiring harness. 12 CORVUS DEALER SERVICE Figure 4-1. Stand-Alone Drive with CSIOO Power Supply 13 CORVUS DEALER SERVICE Figure 4-2. Stand-Alone Drive with CP129 Power Supply 14 CORVUS DEALER SERVICE Figure 4-3. White Cabinet with CP140 Power Supply 15 CORVUS DEALER SERVICE 4.3.4 CP411 The CP411 is also an open-chassis supply used in later versions of the Corvus disk package. The CP4II uses a rectangular, unpainted aluminum chassis. Four voltages are adjustable; use R27 to adjust -5Y, RI4 for +5Y, R7 for +I2Y, and R20 for +24V 4.4 de Power Cables All power supplies terminate with the same ten-pin dc power connector at the drive mechanism. The CPI29 has connectors at both ends of the cable. All others use solder connections at the supplies. The ten-pin power connector which connects to the drive Backplane is keyed, but if forced on backwards, will make connection. Take care to observe polarity when connecting the power cable to the drive. 4.5 Definition of Terms The recording media of the disk drive consists of magnetic-oxide coated aluminum disks referred to as platters. The II-megabyte drive has two eight-inch circular platters, while the 20-megabyte has three. There are two heads for each platter, one on each side of each platter, suspended aerodynamically above each surface . .... ------...... "," " / ) ~, '" I I ' ...... _ ----..... -"" I I I TRACK I I : ".------..... I~ CYLINDER (, 'I) '" ",,/ ...... _------ Figure 4-4. Data Configuration. Data is stored magnetically on circular tracks, which are configured as concentric circles on each platter. Each track is further divided radially into 20 sectors, each sector containing one 5I2-byte block of data. The term track refers to a single head surface of a cylinder, each cylinder consisting of all tracks in common vertical alignment on all surfaces. There are 358 cylinders on the ll-megabyte drive, 388 on the 20-megabyte drive, cylinder 0 being located furthest from the center of the platters. A block is the smallest addressable unit within the drive. Internally, each block consists of 512 bytes of data. Externally, the drive handles data in sectors as defined by the host computer. 16 READ/WRITE HEADS HEADSTACK MICROCHIP SERVO MECHANISM PREAMP PCB LOCATION MOTOR • (IN SOME MODELS) SPEEDCONTROL PCB -~~:mlR+m~r.w;;;;:;;;;~~~F~3= L---.r--"r- --- 1~~;=~~~===e~~~~~r=~~~~~~LL~~~~~~~C= 1~~~~~~===e~~~~~r=~~~~5=~~~~=~~~~~~C: BRUSHLESS SPINDLE CARD BACKPLANE MOTHERBOARD DC DRIVE GROUNDING CAGE REV A lREV B MOTOR BRUSH READ/WRITE PCB READ/WRITE PCB SERVO PCB ' SERVO PCB MICROLOGIC PCB CONTROLLER/LOGIC PCB DISK CONTROLLER PCB FUTURE EXPANSION DISK DRIVE SEALED MECHANISM CORVUS DEALER SERVICE Typically, each host operating system defines a sector as 128 bytes, 256 bytes, or 512 bytes. The Corvus interface software uses the appropriate read and write commands (one each for writing or reading 128, 256 or 512 bytes) depending on the type of operating system. This does not cause a conflict, since the drive simply stores 1,2, or 4 host-defined sectors for each block. Read and write commands of less than 512 bytes are transparent to the host system, due to the Intelligent Controller's ability to handle data blocking internally. 4.5.1 Disk Sealed Mechanism The Corvus mass-storage disk mechanism uses a combination of both new Winchester technology and traditional disk design. The eight-inch platters revolve on a common spindle, driven by a brushless dc motor at a speed of 3600 RPM. Motor speed is monitored at the motor, and is independent of line frequency. An impeller fan at the lower end of the spindle cools the drive electronics in the card cage located in the bottom of the mechanism. A solenoid brake contacts the motor hub approximately 30 seconds after power off. 4.5.2 Controller Firmware Corvus reserves the first two cylinders of the drive for system information. This is referred to as Controller Firmware, and is not accessable to the host operating system. This Firmware contains programming and system information needed by the Z-80 Intelligent Controller, and is loaded into the disk drive RAM when the drive is powered-on or the RESET switch is toggled. the spare track table, Constellation parameters and semaphore status flags are contained in the Controller Firmware. Identical copies of Firmware reside in each of the two cylinders. The rest of the disk area is available to the host system, the configuration of which depends upon the type of host operating system. 4.5.3 Data Storage Data storage arrangement is by concentric tracks aligned in vertical cylinders. Each track is sectioned into 20 sectors, each sector has a capacity of 512 eight-bit bytes. Logical sectors are numbered by using an interleaving specification of nine (see figure 4-6) for the eight-inch drive, except for use with the DEC LSI-II which uses an interleaving specification of five. SECTOR Figure 4-6. Sector Interleaving 18 CORVUS DEALER SERVICE All but one of the heads transfer digital information to and from the platters. The bottom head is reserved for reading servo information from the bottom surface, monitoring the current position of the head stack. Each head glides above the platter surface on a I8-micron (18 millionths of one inch) cushion of air. A particle of smoke, dust, or a human hair could easily play havoc with these critical tolerances, and cause catastrophic failure of the disk device. The seal on the drive cover keeps the internal atmosphere contaminant-free. Breaking this seal for any reason, • 1 .1 , VU!U::. Ule ~allallLy. The heads are held by flexure arms, attached to a common head stack casting which moves on precision bearings and stainless steel rails. Positioning of the heads over the appropriate cylinder is by a linear actuator mechanism, similar to a voice-coil in a loudspeaker. Attached to the head stack assembly, current flows through the voice coil and creates a magnetic field which attracts or repels the field of the permanent magnet surrounding the voice coil, Head travel is controlled by the magnitude and polarity of current flow in the coil; positive flow results in one direction, negative flow results in the opposite direction. Contained in the head stack is the microchip. This select and driver microcircuitry, visible on the top of the stack, is responsible for selecting which head is being used, and transmitting the signal to the drive electronics for further amplification. 4.5.4 Headlock Devices The purpose of the headlock device, either manual or electromechanical, is to keep the heads parked on the outer area of the platter where they rest during poweroff. For the electromechanical headlock, when power is supplied to the drive, the headlock solenoid is actuated, releasing the heads. When the drive is powered off, the heads are automatically retracted, and the solenoid de-energized, locking the heads in the parked position. For drives with manual locking devices, the headlock screw must be used whenever the drive is shipped and received. Whenever a drive is received, the type of headlock device should be determined, and if the manual type, unlocked. Before shipping any drive, verify proper headlock function by tipping the drive while observing the heads. If the headlock is functioning properly, the heads should not move. When the drive is received, unlock the heads (manual headlock drives), and verify that the heads are free by powering on and tipping the drive. The manual-lock drive should never be powered on with the heads locked in place. Failure to unlock the heads may result in damage to the drive. 4.5.5 Preamp PCA Data stored on the media is picked up by the read/write heads and passed on to the Preamplifier PCA located in the bottom of the sealed mechanism. This circuit board is mounted on the underside of the sealed mechanism, and is visible when the drive electronics are removed from the drive. Two types of the Preamp PCA exist; one version having discreet components on the PCA, one having no components. The former version amplifies the signal, and then passes it on to the Read/Write PCA for further processing, while the latter version simply passes the signal to the Read/Write PCA, and therefore has no circuitry on the Preamp PCA. Different Read/Write PCAs are used with each type of Preamp PCA, and are not interchangeable. 4.5.6 Drive Electronics Revision The drive electronics are located in the card cage area in the bottom of the drive. Two basic versions of the drive electronics exist. The Rev A drives contain four PCAs, while the RevB drives use three (see figure 4-5). The Rev A drive electronics consist of one Read/Write PCA, one Servo control PCA, one Micrologic PC A, one Controller PCA, and one Backplane/Motherboard having four PCA card slots which accept the above four cards. Similarly, thE REVS has onE REadl\'Vrit€ PCA, one Servo control PCl\, and one four~slot Backplane/t-.1otherboard. This drive, however, uses one Controller/Logic PCA taking the place of the Micrologic PCA and disk Controller PC A, making a total of three circuit cards. The RevA Micrologic PCA, Controller PCA, Backplane/Motherboard, the RevB Controller PCA and Backplane/ Motherboard are unique to their revision, and are not interchangeable. Read/Write PCAs and some Servo PCAs are interchangeable between RevA and RevB as long as compatabilities are observed (preamp model and servo type). 19 CORVUS DEALER SERVICE Figure 4-7. Preamp PCA Location 4.6 Power-Up As soon as power supply voltages have stabilized, the 2-80 Controller board begins a routine which initializes the 2-80 microprocessor, and then executes a ROM-based self-test. The test checks the on-board RAM, and then a bit-sum check is done to the ROM. If the self-test fails, the 2-80 halts execution, leaving the FAULT and BUSY LEOs on, and the READY LED off. If the self-test executes successfully, the drive begins the boot routine. This consists of first re-zeroing the heads, bringing them over the first cylinder of the disk surfaces. The FORMAT switch (or jumper, in earlier drive configurations) is then tested. If the switch is on, the Controller sets the READY signal. If it is off, the Controller Firmware is read from the first cylinder into the on-board RAM. If the Firmware is successfully read in, the drive comes ready. If a bad block is encountered while reading the Firmware, the Controller will attempt to read from the second copy, any bad sectors found in the first. It will continue to read alternate copies from the disk until all Controller Firmware is successfully loaded into the Controller RAM. 20 CORVUS DEALER SERVICE CHAPTER 5 THEORY OF OPERATION CORVUS DEALER SERVICE CHAPTERS THEORY OF OPERATION 5.1 Scope of Chapter The function of each component as well as the overall function of the drive is described. Details of the operation of Servo, Read/Write, Controller, Backplane, Preamp and Interface electronics are given. 5.2 Introduction The Z-80 Intelligent Controller is responsible for interpreting the commands sent from the host system, and controlling the relevant sub-assemblies. The Read/Write Electronics translate the data signal into a usable format. Servo Electronics are responsible for seeking the requested cylinder, and maintaining that position once it has been reached. The Backplane transfers power and signals between-drive electronics PCAs, power supply, drive sealed mechanism, Interface PCA, and Paddleboard PCA. Interface electronics are responsible for monitoring the status of the drive and sending and receiving bytes from the drive. 5.3 Servo Electronics The Servo PCA is located in slot B of the card cage. The basic function of the servo is to position the read/write heads as instructed by the Z-80 Intelligent Controller, and maintain that position. There exist three versions of Servo PCAs: I} 310221 for use with drive mechanisms which have either manual or electromechanical headlocks, and either Rev A or RevB electronics. 2} 310176 for use with drive mechanisms which have manual headlocks, and either RevA or RevB electronics. 3} 310006 for use with drive mechanisms which have manual headlocks, and RevA electronics. (Refer to the PCA Compatibility Chart in the appendices for details.) The Servo Electronics has two modes: seek mode, in which a command is received from the Intelligent Controller and the servo seeks a specific cylinder address, and position mode, in which the servo position circuitry, independent of the Controller, applies correction voltage to the servo mechanism whenever the heads are detected to have drifted off-cylinder. These two states can be observed by monitoring the POSITION MODE signal. When this signal is high, the drive is in position mode, and when it is low, the drive is in seek mode. The Servo PCA also monitors the power supply voltages, and if a power fall is detected, will interrupt the Controller electronics. The Controller then determines the proper action to be taken, depending whether the interrupt was caused by a power failure or simply a temporary power drop-out. 5.3.1 Servo Tracks The servo surface (located on the lower side of the bottom platter) differs from the data surfaces. This surface contains servo tracks which are similar to data tracks, except that they are located midway between data cylinders. When the heads are positioned on a cylinder, the servo head is located between two servo tracks, and sums the two signals from the adjacent servo tracks, resulting in the tri-bit signal. This signal is in turn processed, resulting in the PES (Position Error Signal). It is by this signal that the drive electronics determines that the heads are on-cylinder. The servo tracks are written at the time the drive is manufactured, and cannot be rewritten in the field. These tracks also contain timing information for index and the write clock. Damaged servo tracks are considered catastrophic failure of the sealed mechanism, which must be replaced as a module. 21 CORVUS DEALER SERVICE SERVO /.tf t' ., SERVO TRACK #1 TRACK #2 READIWRITE TRACK SERVO TRACK #1 SERVO TRACK #2 Figure 5-1. Servo Track Relationship Figure 5-2. Tri-Bit Signal 22 CORVUS DEALER SERVICE HOST INTERFACE ,... ) 1" Z80 CPU MICROPROCESSOR DIGITAL TO r-~----~~>,~------~~~ PES & CLOCK r L ANALOG RAM CONVERTER POS. MODE GENERATOR t SERIAL TO DMA SERVO FILTER & PARALLEL CHANNEL DRIVERS AMPLIFIER CONVERTER SERVO BOARD CRC PARALLEL - GENERATOR .----1 TO ICHECKER SERIAL CONVERTER CONTROLLER/LOGIC - BOARD VOICE PREAMP MFM TO NRZ NRZ TO MFM COIL ELECTRONICS I'A.-----, DECODER ENCODER ~...,...... ~..... \-- DRIVE READ/WRITE & SERVO FILTER & WRITE MOTOR HEADS AMPLIFIER DRIVERS DRIVE MECHANISM READ/WRITE BOARD Figure 5-3. Corvus Rev B Block Diagram 23 CORVUS DEALER SERVICE 5.3.2 Servo Control Signals POSITION ERROR SIGNAL (PES): an analog signal available at Backplane pin B27 (B31 for Rev A). The result of the servo head summing two adjacent servo tracks located on either side of the servo head is the tri-bit signal. Sampling peaks of the tri-bit signal and adding these, results in the PES. This will be zero if the heads are on-cylinder. As soon as the heads drift off-cylinder, the tri-bit _! ___ 1 _._!11 -1!_L ___ L ___ -1 .L! __ ._!11 _____ .1. ! ______. ______nrC' .:JJ.bJ.LU.J. "WI.!..1 \",U.';)LV.l,", U.J.l\.4 LJ.U. .:r V~U. .L ..1(;...:)\.. 1..1" .lll U J.1VJ.l-L'L.1V .J...... ,. During a seek command, POSITION MODE is low, and the heads travel across the servo surface, from one servo track to another. Crossing the servo tracks results in a sinusoidal PES. This continues until the head again rests between two servo tracks, on the destination cylinder. When the drive is in position mode, the servo controi circuitry doseiy monitors the PES, appiying correction current to the servo mechanism for any non-zero value of the PES. POSITION MODE: a digital signal available at Backplane pin B24. A high level represents POSITION mode. A low level represents SEEK mode. In POSITION mode, the servo control electronics have control of the servo mechanism, and maintain the position of the heads on the current cylinder. In SEEK mode, the Intelligent Controller takes control of the servo mechanism and moves the heads towards the destination cylinder. When the heads have reached the destination cylinder, the signal returns to a high level and control is returned to the servo electronics. 5.3.3 Servo Operation During a seek, the Z-80 Controller calculates the difference between current and destination cylinders, resulting in a seven-bit digital value. This word is converted to an analog voltage by a digital-to-analog converter which in turn regulates drive current to the servo voice-coil mechanism. full current is ~pplied to the servo for the majority of the seek, tapering as the heads reach the destination cylinder. The PES is monitored by a zero-crossing circuit on the Servo PCA, which sends an interrupt to the Z-80 Controller each time the heads cross a cylinder. The Controller decrements a counter each time it is interrupted, thus keeping count of cylinders crossed. As the heads pass over the next-to-Iast cylinder, several things occur. The Servo PCA monitors the speed of the heads, and when they have slowed sufficiently to allow the position circuitry to take over, the Servo PCA brings TARGET VELOCITY true. If TARGET VELOCITY is not true, this means that the heads have not slowed, and the Controller applies reverse current to the servo mechanism in an attempt to slow head velocity. If TARGET VELOCITY still is not true, the Controller rezeros the heads and attempts the seek again. When POSITION MODE goes true, control is transferred from the Intelligent Controller to the position circuitry for settling onto the destination cylinder. 5.4 Read/Write Electronics The Read/Write PCA is located in slot A of the Backplane/Motherboard. The basic functions of the Read/Write electronics are: . 1) Convert write data from NRZ {Non-Return-to-Zero} format to MfM (Modified-frequency-Modulation) format before writing it to the platters. 2) Separates the clock signal from the read data and converts the data from MfM format to NRZ format after 3) Signal pre amplification and conditioning take place on the Read/Write PCA (on later models). Two versions of the Read/Write PCA exist: 1) 310101 for use with drive mechanisms which do not have preamp circuitry in the preamp location. 2) 310001 for use with drive mechanisms which have preamp circuitry in the preamp location. 24 CORVUS DEALER SERVICE The 310101 PCA may be used in either the 11MB or 20MB drive, however a jumper must first be configured to reflect the drive capacity. This jumper is located on the Read/Write PCA, below resistor R109. To use the 310101 PCA in a 20MB drive, the jumper must be installed, connecting the two pads. To be used in a 11MB drive, the jumper or trace must be cut. T , [£!QJ 6 ,./ Q12 ~ E;jR6S R37 U (6. I I ~63 @!] c=J ...... R109 • 3 • [SE] U3. RP13 U33 ~.~ 7 ~ ~ 0~ ~ 10 ASM 310101 J Figure 5-4. Read/Write PCA Jumper Location 5.4.1 Read Operation Digital bits (ones and zeroes) are represented in NRZ (Non-Return-to-Zero) format by a high logic state (one) and a low logic state (zero). Converting these representative voltages into MFM (Modified-Frequency-Modulation) format, which uses changes of the state of the magnetic flux of the media to represent the digital information (flux change = one, absence of flux change = zero), makes it possible to record this digital information in a high density (see figure 5-5). Through the use of a data separator, the clock signal is separated from the serial data stream. The clock signal is distributed to the Controller for clocking of all drive functions during the read command. 5.4.2 Write Operation During a write command, the read/write electronics receives digital information from the Controller electronics in NRZ serial format, and converts this data to MFM format. It is then sent to the preamp/select microchip on the heads tack assembly, and on to the heads for writing to the disk media. During a read command, data is picked from the disk by the read/write heads, and then amplified by the preamp/select microchip in the headstack. Next, it is passed to the Read/Write PCA for further amplification and conversion back to NRZ format, and on to the Controller electronics. During the write command only, the Servo PCA supplies the clock signal to the Controller /Logic PCA for synchronization of data. 25 CORVUS DEALER SERVICE Figure 5-5. NRZ Oeft) and MFM Data Formats 5.5 Controller/Logic Electronics The Controller/Logic PCA functions as the master controller over all operations of the drive. The Controller/Logic PCA is responsible for receiving commands from the host computer system, orchestrating the servo and read/write procedures, and sending a return code to the host computer at the completion of each command. The return code reports the error status of the drive after the command has been executed. The Controller generates the CRC bytes for each block written to the disk surface, and also checks the integrity of data read from the disk surface by checking the CRC bytes associated with each block. The Controller/Logic PCA consists of the Z-80 CPU and support logic as well as Controller ROMs (containing procedural 2-80 code for the Intelligent Controller) and on-board RAM (used for buffering data to and from the disk, and utility code loaded from the Controller Firmware area of the disk), Also, four PIO ICs are used to buffer signals to and from the Corvus Mirror, Constellation Multiplexer, Read/Write PCA, and Servo PCA. In addition, the CRC generator!checker error signal is monitored by one of the PIO ICs, and informs the 2-80 CPU in the case of a CRC error or other error. The Controller/PCA communicates with the host computer system through a 34-pin flatcable. 5.5.1 Host to Drive Handshaking Control Signals Three signals handle the handshaking protocol. These are STROBE, READY, and BUS DIRECTION. STROBE This signal is generated by the host system, and acknowledges that the host has sent or received a byte. 26 CORVUS DEALER SERVICE READY This signal is generated by the disk Controller, and informs the host system that the drive is ready to send or receive a byte. Data rate transfer is determined by this signal. BUS DIRECTION This signal is generated by the Z-80 Controller, and controls the direction of the bidirectional bus. The host system monitors this signal to determine whether the drive should expect to receive or send a byte of data. 5.5.2 Controller During Seek Command When the Controller receives a read or write command, it must determine if the requested sector is in the current cylinder or another. If the required cylinder is other than the current cylinder, a calculation is done which results in a digital value representing the difference between the current cylinder and destination cylinder. If this value is zero, the Controller proceeds with the data read or write. If the value is other than zero, the Controller must perform a seek operation. The sign of the difference determines the direction of the seek to be executed; if it is positive, the heads will be moved in towards the spindle, if it is negative, the heads will be moved out towards the edge of the platters. The Controller begins the seek operation by bringing the POSITION MODE signal low. The unsigned digital value is sent to the Servo PCA which converts it to an analog value, and applies it to the servo mechanism which moves the head assembly. The Controller then awaits an interrupt. When the heads cross a cylinder, the Servo PCA sends an interrupt to the Controller, which decrements the distance value by one each time. When the value reaches a value of one, the Controller then monitors the TARGET VELOCITY signal from the Servo PCA. When the heads have slowed sufficiently this signal goes true, and servo control transfers from the Controller circuitry to the position circuitry on the Servo PCA (POSITION MODE goes high), which settles the heads onto the destination cylinder. To verify that the seek operation has been successful, the header information is read from the next sector that passes under the read heads. If the sector address is incorrect, the heads will be re-zeroed and the seek will be attempted again. 5.5.3 Controller During Read and Write Commands The write command begins when the write command is received, along with the sector address. The Z-80 Controller determines whether the write command is for 128, 256 or 512 bytes, and relinquishes control to the DMA circuitry for transfer of the data from host memory to the on-board Controller RAM. During the host-to-drive data transfer, the processor is put into a wait state while the DMA circuitry transfers the data from the host memory to the on-board RAM. The DMA circuitry uses the Z-80 processor as an address counter, and when the first byte is received from the host system, the DMA circuitry uses the address specified by the Z-80 to write the byte into on-board RAM. Between data byte transfers, the Z-80 is released from the wait state just long enough to increment its address counter. . Once the data is in RAM, control is returned to the Controller which performs a seek to the correct cylinder, if necessary, and reads the first available header to verify the seek. The DMA circuitry next clears the eRC generator/checker, and waits for the proper sector to pass under the head. If the required write function is less than 512 bytes, the block is read in from the sector and the host information is overlaid into the appropriate locations of the block. Next, preparations are made for writing that block out to the disk. When the proper sector comes around, the Controller again turns control over to the DMA circuitry. The processor again is put into a wait state while the DMA transfers data bytes one at a time to the parallel-to-serial converter. A CRC value is generated from the serial data and inserted in the data stream, and both are then sent to the read/write circuitry for output to the heads. The CRC information is used for checking data integrity when read from the disk. The disk write operation is concluded by reading in the block to verify its success. The bus direction is then reversed, and a status byte sent to the host system indicating the result of the disk write. 27 CORVUS DEALER SERVICE The read command is similar to the write command except that the data flow direction is reversed. Data and its accompanying CRC byte is received from the read/write electronics and arithmetically summed by the CRC checker/generator. If the result is not equal to zero, a CRC error is generated. If the result is equal to zero, no error is generated, and the data is converted from serial form. to eight-bit parallel form, The OMA electronics then transfers the data to the on-board RAM, using the address supplied by the processor. ------.. .. Arter the rea a has successtully completea, the aata bus IS turnea arouna, ana the status ot the reaa proceaure IS sent to the host. The data is then sent to the host using OMA. 5.6 Backplane/Motherboard PCA The Backplane is responsible for transferring power and signals between all system components, and provides a physical mounting for all PCAs. The Backplane, or Motherboard, contains four edge connectors to accept up to four PCA assemblies. All four of these in the Rev A will be filled by the Read/Write PCA, Servo PCA, Micrologic PCA, and Oisk Controller PCA. Three slots in the RevB will be filled by the Read/Write PCA, Servo PCA, and Controller/Logic PCA. The rear of the Backplane contains four double rows of wirewrap pins which accept flatcable connectors from the front bezel Paddleboard PCA, Interface PCA, and sealed mechanism Preamp PCA, as well as the dc power cable. All eight-inch drives use one Backplane/Motherboard part number (310021), wiring changes on the Backplane making it either RevA compatible or RevB compatible. These are not interchangeable, and should not be substituted for one another. Refer to Backplane PCA wiring diagrams in the appendices for identification and current wiring configura tion. Revision-A drives require resistor packs inserted in the 16-pin sockets on the backplane. The Revision-B drives do not require these. CAUTION: The connectors at the end of aU 34-pin flatcables are available in two sizes: a 10o-mil connector, and a 200-mil connector. The 100-mil connector has two closely-spaced rows of evenly-paried holes. The PROCESSOR port on the rear of the white cabinet accepts a 10o-mil connector. The 200-mil connector has two widely-spaced rows of holes. These two rows of holes are not evenly-paired, but offset by one hole, and each time it is connected, must be inspected carefully to avoid misconnection. This type of connector plugs onto the Backplane of the drive sealed mechanism, interfacing the front bezel Paddleboard PCA, Preamp PCA and Interface PCA to the drive electronics. When placing the 200-mil connectors on the Backplane, be sure to match the first pair of destination pins with the first pair of holes in the connector. The one offset hole at each end of the connector will not match up to any of the 34 destination pins, but will instead mate with an adjacent pin, or no pin at all (i.e., when the destination pins are at the end of a row). The Paddleboard PCA connects to the left end of the row C, (C1-C34, "one" edge to the right). The cable from the PROCESSOR connector on the rear bezel also connects to the Backplane (RevA: 051-084, "one" edge to the left), RevB: C87-C120, "one" edge to the right). The flatcable connecting the preamp PCB to the Backplane connects to row A (A1-A30), "one" edge (dark stripe) to the left. The ten-pin dc power connector from the power supply connects to the left end of the row of power pins located in the upper right corner of the Backplane. The two-wire motor power connector plugs onto the right-most power pins. 5.7 Preamp PCA Located in the bottom of the sealed disk mechanism above the card cage, is the preamp PCA. Two versions of this PCA exist: the early version uses a discrete preamp in this position, and is identified by the components on this PCB. In the later version, the preamp was moved to the read/write PCA, and has a PCA blank in this position. Two Read/Write PCAs are used with the eight-inch drive. These are not interchangeable, and must be matched to the different preamp configurations above (refer to the PCA compatibility chart in appendix C). Be sure to note Preamp PCA type whenever changing read/write electronics to insure compatibility. 28 CORVUS DEALER SERVICE Figure 5-6. Rev A Cabling Figure 5-7. Rev B Cabling 29 CORVUS DEALER SERVICE Because this PCA is part of the drive sealed mechanism, removing this PCA will break the seal. Do not remove the Preamp PCA. If this PCA is found to be faulty, the drive sealed mechanism must be replaced .. 5.8 Paddleboard peA The Paddleboard PC A, located on the front bezel of the white drive enclosure, contains switches and LEOs. The tunction ot tnese controis are cietaiieci in section j.j. The Paddle board PCA was manufactured in four revisions: 1) For Rev A drives, identified by its three switches and 100-mil connector 2) For RevS drives, identified by its four switches and IOO-mil connector 3) For RevB drives, identified by its 34-pin edge-connector and one IC 4) For RevB drives, identified by its 34-pin edge-connector and two ICs Versions. 2, 3 and 4 are all compatible with RevB drives, and are not interchangeable with the Rev A version 1. 5.9 Interface PCA The Corvus disk system will interface to many different microcomputer systems, and may be purchased with any of several interface cards available. The typical interface card contains address decoding, bidirectional data buffering, and handshaking circuitry. Some interface cards also have ROMs with boot routines for booting the microcomputer from the Corvus disk. Some do not, and these computers must boot from floppy diskette. Connected to the 34-pin flatcable, the Interface PCA contains two input ports, and one output port and address decoder. One input port is an eight-bit tristate data buffer, used for receiving data bytes during drive-to-host transfers. The other input port is the status port, used for determining the state of the disk drive. The output port is an eight-bit latch, used in host-to-drive data transfers. When the host system needs to access the disk, it first checks the BUS DIRECTION signal, and if the bus is in the host-to-drive direction, and the READY signal is high, the drive is ready to accept a new command. The host now sends command bytes to the drive. During a read or write command, the bus will remain in one direction without turning around, until all bytes have been transferred. The drive will acknowledge the acceptance and execution of commands by setting the bus direction bit of the status port. This is a signal that the return code is on the data bus, which must be retrieved before the drive will accept new commands. 30 CORVUS DEALER SERVICE CHAPTER 6 DISASSEMBLY CORVUS DEALER SERVICE CHAPTER 6 DISASSEMBLY 6.1 Scope of Chapter Disassembly of Corvus disk drives is covered in two separate sections. Some Rev A and RevB drives are not contained in a cabinet, and therefore require much less disassembly. Current drive configuration consists of a white cabinet containing the drive sealed mechanism, cooling fan and power supply. 6.2 Introduction All phases of drive disassembly for both the current units and the early stand-alone units are covered in this section. Replacement is on a module basis, and disassembly will be to this modular level. Corvus disk drives have been shipped in several different configurations. These include: 1) The stand-alone drive sealed mechanism has two different power supplies. The CS100 power supply shares a common baseplate with the drive, while the CP129 power supply stands separate from the drive, connected only by the dc power cable. Disassembly procedures for these configurations are covered in section 6.4, Stand-Alone Units. 2) Later versions of the drive consist of the drive sealed mechanism and either the CP140 or CP411 power supply sharing a white cabinet. Disassembly procedures for these configurations are covered in section 6.3, Metal Package .. WARNING: Before disassembling any disk equipment, be sure power Is disconnected. CAUTION: Do not under any circumstances operate the drive without first insuring that PCA spacers have been installed between electronic circuit cards. Failure to do this will allow the PCAs to contact each other which may cause catastrophic damage if the drive is powered on. 6.2.1 Tools Required Disassembly of the Corvus eight-inch Winchester disk drives can be accomplished with the following tools: 1) 5/64-inch hex allendriver 2) 3/32-inch hex allendriver 3) 3/16-inch blade screwdriver 4) 5/16-inch blade screwdriver (81h-inch long) 5) 1/4-inch nutdriver 6.3 Metal Package The current package consists of a white cabinet containing the eight-inch disk sealed mechanism, power supply, fan, cabling, and Paddleboard PCA. The cabinet is a four piece assembly. Details for disassembly follow. 6.3.1 Top cover: 1. Remove the eight side allen screws securing the top cover to the basepan. 2. Remove the cover straight up. 6.3.2 Rear bezel: 1. Remove the four allen screws securing the rear bezel to the basepan. 2. Remove the bezel straight rearward, being careful not to stress the ac wiring and flatcable wiring. 31 CORVUS DEALER SERVICE Figure 6-L Access Door, Metal Package 32 CORVUS DEALER SERVICE 6.3.3 Backplane cover: 1. Loosen the four slot screws securing the smoke-colored plastic cover to the Backplane/Motherboard, and remove it by sliding it up. 6.3.4 Cabling: 1. Disconnect the front bezel Paddleboard flatcable from the drive Backplane {extreme left end of row C}. 2. Disconnect the interface ribbon cable from the Backplane {extreme right end of row C}. 3. Disconnect the dc power cable from the power connectors on the Backplane {upper right-hand corner}. 6.3.5 Drive mechanism: 1. Using a long 5/16" blade screwdriver, loosen the six large side slot screws securing the drive mechanism and side-brackets to the basepan. 2. Lift the drive mechanism straight up off of the rubber side strips. {The rubber strips are adhesive, and may require gentle prying under the brackets to free the mechanism. Be careful not to exert any force on the drive electronics while prying.} 6.3.6 Power supply: 1. Disconnect the dc power connector from the Backplane of the drive mechanism. 2. Disconnect the front bezel power switch connector from the ac wire harness. 3. Disconnect the six-pin transformer primary connector from the ac wire harness. 4. Disconnect the ac cable from the cooling fan. 5. Remove the four screws securing the supply to the basepan. 6. Remove the power supply straight up and out of the basepan. 6.3.7. Front bezel: 1. Disconnect the flatcable from the Paddleboard PCA on the front bezel. 2. Remove sealed mechanism and power supply from the basepan as described above. 3. Remove the four slot screws securing the bezel to the vertical support brackets. 4. Remove the bezel. 6.4 Stand Alone Units Some RevA drives and RevB drives were shipped in a stand-alone configuration, either with a CS100 power supply mounted on a common baseplate or with a completely separate CP129 power supply. Disassembly of these is described below. 6.4.1 Disassembly (CS100) 1. Remove the four slot screws securing the power supply to the baseplate. 2. Tip up the rear of the power supply, exposing the voltage adjustment on the bottom. The voltages can be adjusted now (refer to section 7.3.2.2 for instructions), or the FORMAT and MUX switch wires and dc power cable disconnected from the Backplane, and the supply removed. 3. Remove the six slot screws securing the drive mechanism to the baseplate. 4. Remove the drive unit by lifting it straight up and out of the baseplate. 6.5 Drive Electronics Removal and Disassembly All eight-inch disk drive mechanisms contain drive electronics in a card cage, located in the bottom of the drive unit. The complete card set must be removed to replace or adjust any of the electronics. 33 CORVUS DEALER SERVICE 6.5.1 Card set: 1. Locate the drive Backplane at the rear of the drive sealed mechanism, and disconnect the preamp flatcable connector from the top left corner of the Backplane. 2. Remove the four slot screws and two nutplanes securing the Motherboard to the metal support brackets. The brackets will remain attached to the drive base. 3. Turn the mechanism on one side, being careful not to let it fall. Locate the two foreward securing screws and supports, located at the corners of the PCAs. Remove these two slot screws. 4. The Backplane and all electronics PCAs may now be lifted straight away from the drive mechanism. CAUTION: Do not under any circumstances operate the drive without first ensuring that PCA spacers have been installed between electronics circuit cards. Failure to do this will allow the PCAs to contact each other which may cause catastrophic damage if the drive is powered on. 6.5.2 PCA Replacement: 1. Remove card set as outlined above. 2. Remove the PCA spacers from between the circuit cards. 3. Gently pull the PCA out of the Backplane slot. 4. Insert replacement PCA in its slot, making sure it has been seated securely. 5. Insert the two PCA spacers at the corners of the card set. 6. Install the complete card set, reversing the removal instructions above. 34 CORVUS DEALER SERVICE CHAPTER 7 ADJUSTMENTS AND MAINTENANCE CORVUS DEALER SERVICE CHAPTER 7 ADJUSTMENTS AND MAINTENANCE '7.1 Scope of Chapter This chapter will cover the check and adjustment of Power Supply voltages, Servo electronics, and Brake mechanism. '7.2 Introduction The Corvus disk system is based on a Winchester disk mechanism. Because of this storage device's sealed environment, there is no need of preventive maintenance. '7.3 Power Supply Voltage Check and Adjustment Ageing of the power supply and normal heating and cooling of the drive electronics can cause the power supply voltages to drift over time. Voltages should be checked each time the installation is visited for system checkout. WARNING: Extreme caution should be exercised when adjusting the power supply. High voltages present a potential hazard. '7.3.1 CP140 and CP411 '7.3.L1 Voltage Check: 1. Remove cover to the enclosure as outlined in section 6.3.1. 2. Locate voltage test points along the top side of the power supply. These are labeled +sv, COM, -Sv, +12V, COM, -12V, COM, +24Y. 3. Turn on the ac power switch. 4. Using a DIGITAL voltmeter, check the power supply voltages at these connections, using the corresponding COMMON test point for each voltage. All voltages must be within ±O.l volts of the specified voltage, except the +24V which has a tolerance of ±1.2S volts. S. If any of the voltages are out of tolerance, follow the adjustment procedure for this supply. Figure 7-L de Power Cable Connection 3S CORVUS DEALER SERVICE 7.3.L2 Voltage Adjustment 1. Remove ac power from the disk drive. 2. Remove the cover of the drive. 3. Disconnect the dc power cable from the drive Backplane. 4. Connect ac power to the disk drive, and turn on the ac power switch. 5. Monitoring the dc voltages as outlined above, adjust the +5\1, -5\1, and +12V using the following adjustments: CP140 CP411 R-IO +5V R-14 +SV R -sV R-27 -sV R-13 +12V R-7 +12V R-20 +24V If any voltages not listed above are out of tolerance, the power supply must be replaced. NOTE: During adjustment, the +sV or -sV may drop to or near zero. This is due to the over-voltage protection circuitry being activated. To reset this condition, turn off the ac power switch, and bleed the +sV or -sV charge to ground using a lO-K resistor. Set the trim resistor to its original position, turn on ac power and proceed with the adjustment. 6. Turn off the ac power switch. 7. Connect the dc power cable to the drive Backplane. 8. Turn on the ac power switch. 9. Recheck and, if necessary, readjust the voltages. 7.3.2 CS100 Voltage Check and Adjustment WARNING: Under no condition Is the CS100 to be powered on while disconnected from the disk drive unit. The CS 100 power supply Is a switching power supply, and must be under load to be adjusted properly. Attempting to adjust the CS100 while disconnected from the drive may result In severe damage to the supply and, possibly, harm to the technician. 7.3.2.1 Voltage Check: 1. Follow disassembly instructions for the CS100 power supply as outlined in section 6.4.1. 2. Turn on the ac power switch. 3. Using a DIGITAL voltmeter, check the power supply voltages at the drive Backplane power connector. These are labeled +5\1, -5\1, +12\1, -12\1, +24Y. All voltages must be within ±O.l volts of the specified voltages, except the +24 which has a tolerance of ±1.2s volts. 4. If any of the voltages are out of tolerance, follow the adjustment procedure for this supply. 7.3.2.2 Voltage Adjustment 1. Remove ac power from the power supply. 2. Remove the pm,ver supply from the baseplate, leaving the dc power cable connected to the drive I3ackplane. 3. Connect ac power to the power supply and turn on the ac power switch. 36 CORVUS DEALER SERVICE 4. Monitoring the +5Voutput, adjust the dc voltages using the following adjustments: CS100 R 25 All voltages All other voltages track with the +5Y, so monitoring this one voltage will result in proper adjustment of all voltages. 7.3.3 CP129 7.3.3.1 Voltage check: 1. Using a DIGITAL voltmeter, check the voltages at the power connections on the Backplane of the drive, using the corresponding COMMON power pin for each voltage. All voltages must be within ±O.l volts of the specified voltage, execpt the +24V which has a tolerance of ±1.25 volts. 2. If any of the voltages are out of tolerance, follow the adjustment procedures for this supply. 7.3.3.2 CP129 Voltage Adjustment: L Remove ac power to the power supply. 2. Remove the eight screws securing cover to the power supply and remove the cover. 3. Disconnect the dc power cable from the drive Backplane. 4. Connect ac power to the power supply and turn on the ac power switch. 5. Monitoring the dc voltages as outlined above, adjust all voltages using the following adjustments: CP129 R 4 +5V R 14 -5V R 13 +12V R 17 -12V R 6 +24V If any of the above voltages are not adjustable within tolerance, the power supply must be replaced. NOTE: During adjustment, the +sV or -sV may drop to or near zero. This is due to the over-voltage protection circuitry being activated. To reset this condition, turn off the ac power switch, and bleed the +sV or -sV charge to ground using a 10K-ohm resistor. Set the trim resistor to its original position, turn on ac power and proceed with the adjustment. 6. Turn off the ac power switch. 7. Connect the dc power cable to the drive Backplane. 8. Turn on the ac power switch. 9. Monitoring the dc voltages as outlined above, adjust the voltages if necessary. CAUTION: When adjusting power supply voltages with the drive connected, it is essential that no one voltage be adjusted beyond its tolerance. This requires close monitoring and careful adjustment of the trim resistors. Adjustment of any voltage beyond its tolerance may cause damage to the drive electronics. 37 CORVUS DEALER SERVICE 7.4 Servo Mechanism Servo mechanism and electronics will change with time, and require occasional adjustment. The servo test monitors the average seek time it takes the heads to execute a full loop seek-from cylinder 0 to maximum cylinder. Adjustment of the servo requires the Dealer Service utilities, a host microcomputer, and an oscilloscope. The servo mechanism timing may be checked either by dealer service software, or by oscilloscope. Complete documentation tor the Dealer Service Utilities are detailed elsewhere in this document. 7.4.1 Servo Adjustment: ASM 310176 and 310221 1. Remove ac power from the drive. 2. Remove the drive mechanism from the metai cabinet, if mounted in an enclosure. 3. Place the drive mechanism on one side. 4. Remove the PCA card assembly from the drive mechanism, leaving the 30-pin preamp cable and motor wires connected between the drive mechanism and the Backplane. Place the card assembly on its side, at a right angle to the drive mechanism. Connect the dc power cable to the drive backplane. Be sure the plastic PCA spacers at the corners of the PCAs remain intact during all service procedures. Figure 7-2. Drive Configuration During Servicing 38 CORVUS DEALER SERVICE 5. Connect the oscilloscope as follows: Channel A: to Backplane pin B24, ground to pin A77-ABO, select 2V/div., dc coupled Channel B: to Backplane pin B27, ground to pin A77-ABO, select 2V/div., dc coupled Trigger: channel A, negative edge, dc coupled Timebase: lOms/div. Timing: 70ms ± 2.5ms 6. Turn on the host microcomputer, then the Corvus drive, observing that the heads re-zero. The drive must come to READY for the diagnostics to communicate with the drive. 7. Boot the Corvus Dealer Service diskette, select "Controller Diagnostics", execute "DOWNLOAD DIAGNOSTICS" (utility D) and then "ANALYZE SERVO" (utility I). The program will return the average seek time required to execute a full loop seek. This should be 7Oms, ±2.5ms. If the returned value is out of tolerance, follow the adjustment procedures below. 7A. Alternately, "FULL CYLINDER LOOPSEEK" (utility L) may be executed (in place of "ANALYZE SERVO"), which executes an infinite full cylinder loopseek, but does not return a timing value. Use this utility for adjusting the Servo electronics while observing the POSITION MODE and PES signals with the oscilloscope. If the displayed signals are out of tolerance, follow the adjustment procedures below. Figure 7-3. PES Signals Improperly Adjusted Oeft) and Properly Adjusted 39 CORVUS DEALER SERVICE NOTE: Each of the following adjustments affect all others. The procedure may need to be repeated several times in order to bring all signals into tolerance. 9. Using RIOs, adjust POSITION MODE signal so the rising edge occurs 70ms ±2.sms after falling edge. (Refer to diagram 7-3.) 10. Using R62, adjust PES signal so that its peak-to-peak amplitude is 8.4 volts at the beginning or end of the waveform, whichever is least (Refer to diagram 7-3.) IL Using RI22, adjust PES signal for slight undershoot at the last zero-crossing, and minimum ringing after this point. '7.4.2 Servo Adjustment: ASM 310006 L Remove ac power from the drive. 2. Remove the drive mechanism from the metal cabinet (if mounted in an enclosure) or remove from baseplate. 3. Place the drive mechanism on one side. 4. Remove the PCA card assembly from the drive mechanism, leaving the 3D-pin preamp cable and motor wires connected between the drive mechanism and the Backplane. Place the card assembly on its side, at a right angle to the drive mechanism. Connect the dc power cable to the drive backplane. Be sure the plastic PCA spacers at the corners of the PCAs remain intact during all service procedures. 5. Connect the oscilloscope as follows: Channel A: to Backplane pin B24, ground to pin A77-A80, select 2V/div., dc coupled Channel B: to Backplane pin B31. ground to pin A77-A80, select 2V/div., dc coupled Trigger: channel A, negative edge, dc coupled Timebase: IOms/div. Timing: 96ms ±2.sms 6. Turn on the host microcomputer, then the Corvus drive, observing that the heads re-zero. The drive must come to READY for the diagnostics to communicate with the drive. 7. Boot the Corvus Dealer Service diskette, select "REV A DIAGNOSTICS", and execute "SERVO ADJUST". 8. View the PES and POSITION MODE signals on the oscilloscope while this utility is executing. The POSITION MODE signal should be low for 96ms ± 2. sms. The PES signal should have a peak-to-peak am plitude of 8.4 volts at the beginning or the end of the waveform, whichever is the lesser amplitude. The last zero-crossing of the PES signal should have minimum distortion, a maximum of 2 volts overshoot, while the last three zero-crossings of the PES should be linear with respect to time. If any of these are out of tolerance, follow the adjustment procedures below. NOTE: Each of the following adjustments affect all others. The procedure (steps 9-11) may need to be repeated several times in order to bring all signals into tolerance. 9. Using RI37, adjust POSITION MODE signal so that rising edge occurs 96ms ±2.sms after falling edge. 10. Using RI94 adjust PES signal so that its peak-to-peak amplitude is 8.4 volts at the beginning or end of the waveform, whichever is least. 11. Using RIsI, adjust PES signal for a maximum overshoot of 2 volts at the last zero-crossing, and minimum ringing after this point. 12. Turn off the ac power switch. 40 CORVUS DEALER SERVICE 13. Connect the oscilloscope as follows: Channel A: pin 2, IC at location B3. Use a ground on the servo board (refer to schematic for this PCA). Select 2V/div, dc coupled. Trigger: channel A, negative edge, dc coupled. Timebase: 10Ons/div. Timing: 20Ons, including ghost images. 14. Turn on the ac power switch, and observe that the heads re-zero. 15. Boot the Corvus Dealer Service diskette, select "REV A DIAGNOSTICS", and execute "PLO ADJUSTMENT". 16. View the waveform on the oscilloscope. The PLO pulsewidth should be less than 20Ons, including ghost images. If this signal is out of tolerance, follow the adjustment procedures below. 17. Using R18S, adjust the PLO so that the width of the pulse is a maximum of 200ns (adjusting R18S until the "whisker" trailing the waveform is eliminated, will result in proper adjustment). If this signal cannot be adjusted within this tolerance, this PCA must be replaced. 7.5 Brake Mechanism Inherent in the Winchester disk design is the direct contact between the heads and the disk surface after the drive has powered off. Contact between these two components can be minimized by very fast acceleration of the platters after power has been applied to the dirve, and very fast deceleration after power-off. The latter is taken care of by the application of the solenoid brake mechanism applied to the motor hub after the platters have slowed sufficiently to no longer aerodynamically support the heads above the disk platters. The brake mechanism should be adjusted only when it is observed not to function properly. Normally, the brake should "click" in and brake the spindle to a stop within 30 seconds after power-off. If this does not occur, the brake should be adjusted following the adjustment procedures below. 7.5.1 Brake Adjustment L Remove ac power from the drive. 2. Remove the drive mechanism from the metal cabinet, if mounted in an enclosure. 3. Place the drive mechanism on one side. 4. Remove the four screws securing the unit bottom cover in place, and swing it aside being careful not to snare the spindle ground strap. CAUTION: Do not loosen or remove any of the four studs that support the bottom cover. These secure the sealed mechanism bottom plate and help maintain the integrity of the mechanism. Breaking this seal will void the warranty. 5. Loosen the two screws securing the brake solenoid to the bracket, and move the solenoid away from the hub. 6. Insert a .02 to .03-inch thickness guage (a double-thickness business card will do) between the brake solenoid plunger and the hub. 7. Move the brake solenoid firmly up against the hub, with the guage in place. 8. Tighten the screws securing the solenoid to the bracket, and remove the guage from between the hub and plunger. 9. Connect the dc power cable to the drive Backplane, and turn on the ac power switch. Check that the solenoid functions when the power is applied to the drive. WARNING: Be careful not to touch the fan while the motor Is tum/ng. 41 CORVUS DEALER SERVICE Figure 7-4. Mechanism Adjustment 10. Power off the drive. 1L Replace the unit bottom cover. 42 CORVUS DEALER SERVICE CHAPTERS DEALER SERVICE DIAGNOSTICS CORVUS DEALER SERVICE CHAPTER 8 DEALER SERVICE DIAGNOSTICS 8.1 Scope of Chapter The Dealer Service Diagnostic Utilities are supplied to aid the technician in tracing faults in the Corvus disk drive system, and speed the correction of these faults. The Drive Diagnostic, Controller Diagnostic and Track Diagnostic utilities are covered in this chapter. The Mirror and Omninet Diagnostics are covered in the service manuals for those products. 8.2 Introduction Each Corvus Authorized Dealer Service Center will be supplied with Dealer Service Utilities. These utilities will help the technician exercise and diagnose the Corvus disk and network systems. The disk drive utilities consist of standard Drive Diagnostic for Rev A and RevB, Controller Diagnostic which will exercise and diagnose the drive utilizing the drive Z-80processor, and a rigorous Burn-In program which exercises and tests the drive system infinitely (i.e. overnight). Also included is a single-track read-write diagnostic, for determining the condition of a track. Some versions of the diagnostic utilities display only 40 characters on the video monitor. When viewing the diagnostic menu under each specific item, typing a question mark (7) will display an additional 40 characters of menu options. 8.3 Drive Diagnostics RevB This program is essentially the same program provided on the Initialization diskettes supplied with each Corvus drive. All options within this program are non-destructive to data on the drive, with the exception of the FORMAT utility. 8.3.1 CRC A good sector is defined as one capable of retaining all bits in the order they were written. When a block is read from a sector, the CRC value is read with it and tested. Bit errors may occur in one of two ways: 1) physically (faulty media resulting in dropped bits and mismatched CRC bytes) 2) magnetically (miscellaneous bits written to the block resulting in mismatched CRC bytes) The Cyclic Redundancy Code Test is a non-destructive test which reads each block of data, and checks it against its CRC value. If for any reason, the CRC value does not match the block of data, the CRC checker/generator signals the Controller that an error has been detected, and the processor halts operation. Any errors will be reported at the end of the program. Run this test several times to determine whether the error is due to faulty media (which will show up as repeated errors) or random magnetic bit changes (which will show up as one-time errors). Tracks containing sectors with repeated errors should be spared (use Drive Diagnostic utility PRM). 8.3.2 EXR The exercise test seeks random sectors and reads the header information from that sector to verify the success of the seek. Periods print to the video display for successful operations, asterisks for hard errors (errors that exist after ten retrys) and question marks for soft errors (operations that succeed after at least one retry). Pressing RETURN displays the error list, consisting of total number of passes (seeks), hard and soft errors. Any errors reported should be followed by a CRC test to check for faulty sectors. 8.3.3 UPO This utility rewrites the 2 copies of Controller Firmware into the first two cylinders of the drive. The Update utility does not rewrite the Spare Track Table, Virtual Drive Offset Table or Interleaving Specification, nor is it destructive to data. Boot from the Corvus Utility diskette, and execute the Diagnostic program. Since it is not possible to update the firmware on the boot drive, the system MUST first be booted from diskette. 43 CORVUS DEALER SERVICE The program will display the default Controller Firmware file resident on the diskette (that contains the Update utility). This will be in the form of: ENTER CONTROLLER CODE FILE: CFxx.x The current level of Controller Firmware for RevB drives at this writing is CFl7.3. !f :!~':"~~':'!" '!':'!"':'!0!"' !':' ~0 ~Q 1_1CQ~, it chr\111rl hp pntpTPrl nl"'llAT Thp hiehpc:t (;md therefore current) revision level should be used whenever updating the Controller Firmware. 8.3.4 VSN This utility displays the current versions of the Controller Firmware and Controller ROMs: DRIVE 1: Vxx.x CORVUS SYSTEMS DD-MM-YY CONTROLLER ROM VERSION: nn where DD-MM-YY represents the release date of that Controller Firmware version, xx.x represents the Controller Firmware version (i.e. CFl7.3), and nn represents the suffix of the two Contr01ler ROMs (i.e. 3.22 and 4.22). At this printing, the current versions are: Controller Firmware: CFl'Z3 Controller ROMs: 22 8.3.5 FMT CAUTION: This utility will destroy data on the drive. The drive may at some time need formatting. This diagnostic-level, or bottom-level format writes the rudimentary magnetic pattern to the tracks required before data may be retained properly.. First turn the FORMAT to the ON (right) position, then execute the FORMAT program. Some versions of this utility request a password, which is HAL When the Format has completed, the program will display: FORMAT COMPLETE - NOW UPDATING FIRMWARE ENTER CONTROLLER CODE FILE: CFxx.x The program will now rewrite the Controller Firmware using the input file displayed. If another version of Firmware is to be used, enter the filename now. The FORMAT program writes default Drive Parameters to the drive (no tracks spared, Interleaving Spec = 9, VDO Table: Drive 1 = 0), and should be updated as necessary after the FORMAT program terminates. 8.3.6 PRM The Parameter option of the diagnostic program allows the checking and alteration of the Constellation Multiplexer parameters (including Master Multiplexer Configuration Table and Polling Parameters) and Drive parameters (including Spare Track Table, Sector Interleaving Specification and Virtual Drive Offset Table). 8.3.6.1 MUX Selecting this option displays the Multiplexer table: M M M M M M M M X 44 CORVUS DEALER SERVICE Only if a Master Multiplexer is used in the Constellation network is this table to be changed. In the instance that a Master Mux is installed, each of the eight ports (M in the above table) should change to either "N" if no device is connected to the port, "C" if a computer other than a DEC-System LSI-II is connected to the port, or "L" when an LSI-II is used, or left an "M" if a Host Mux is connected to that port. Polling Parameters is the next option of the program. When the drive is used with a Constellation local network with Intertec Superbrain or Radio Shack TRS-80 computers, the Polling Parameters should be changed: Standard Polling parameters: 180,16,32,0 For Superbrain and TRS-80: 180,32,32,0 8.3.6.2 DRIVE Selecting this option displays the spare track table. Whenever a track is found to contain a faulty sector, that track must be removed from service, and a spare track used. These bad tracks are eliminated by listing them in the Spare Track Table. This utility enables the user to: ADD a track to the Spare Track Table (remove it from service) DELETE a track from the Spare Track Table (restore it to service) LIST the Spare Track Table QUIT or exit from the spare track routine The track number containing the faulty sector must first be calculated. The formula for this is: T=(CxN)+H where T is the track number to be calculated, C and H are the cylinder and head numbers respectively, returned by the CRC program. N is the number of data surfaces of the drive. These are as follows: 11MB = 3 data surfaces 20MB = 5 data surfaces The resulting track number should be spared. The Sector Interleaving Specification is the next option of the program. Interleaving, or skewing, is defined as the use of an offset constant in the sequential numbering of sectors. This value for 11MB and 20MB eight-inch drives is nine for all computer systems except the DEC System LSI-II which uses a value of five. Sector Interleaving is shown in figure 4-6. Check the Interleaving Specification whenever the drive is first received, and whenever it is formatted. Next, the Virtual Drive Offset table should read: DRIVE 1 0 unless otherwise instructed by the Corvus User Guide. This table should be checked when the drive is first received, and whenever the drive is formatted. 8.3.7 SET This utility allows the user to change the slot number, drive number, or drive type of the drive to be tested. 8.3.8 QUIT Selecting this option exits the program, and returns the user to the main Dealer Service menu. 8.4 Controller Diagnostic The purpose of the Controller Diagnostic program is to provide comprehensive testing for the Corvus disk drives. 45 CORVUS DEALER SERVICE 8.4.1 General Description: The Controller Diagnostic program is a combination of 2-80, host system machine code and high-level language programs which allow the technician to directly communicate to the Intelligent Controller of the disk drive. The code breaks down into three parts as follows: High-level language terminal program: The high-level portion of the program makes the host ~~ __.... ~ ___ ~_: :_ .. ~11:_~_ .. L ___ : __ 1 _._L!_L ______.. _, __ , _ . _,.L .L _ .1 __ ' ._ ,....._ ., 11 'T'1 "' ...... a..u. .t"'-A. .. '-.&...... , ...... 1.&..& ,U,I.L\".u. .lb'-"lL "\,,.J...I.,&,U. .I.U.. U. W'V.l.U\,..J.l \"'''11 \...Vl.l1111U1U\..QL\:. ¥V1Ll1 lile. "".liVe '-UllL.lUl1t:l. 11lCIC a..1t several features implemented in the high-level program, such as base conversions, slot selection and the driver which downloads the code to the drive Controller. Host system machine code: The machine code provides the low-level interface to the drive Controller. It transmits and receives data from the Controller according to the parameters passed to it by the high-level program. It is slot selectable and contains a one second time-out feature which allows the program to recover if the drive is not responding. 2-80 code: the 2-80 code is the heart of the diagnostic and is the largest portion of the program. It performs the commands which are passed to it by the high-level program via ASCII characters. It consists of three blocks of code which are loaded to different locations in the Controller memory. 8.4.2 Controller Diagnostic Commands The following is a detailed description of each function of the Controller Diagnostic. Please note that there should be no spaces in the commands unless the notation 8.4.2.1 A) ABORT DIAGNOSTIC: This command allows the operator to leave the diagnostic and return to the command level of the operating system. The format for this command is: A 8.4.2.2 B) MACRO MENU: This command allows the operator to create a Macro program. The computer will prompt you with: W)RITE MACRO X)ECUTE MACRO Enter W to create a Macro program. The format for this command is: W 46 CORVUS DEALER SERVICE Entering a "n" will return the Controller Diagnostic command prompt. Entering a "Y" will result in the computer prompt: ENTER MACRO FILENAME => Enter the name you wish to call the Macro program you have just created (maximum 11 characters). The computer will respond with: * MACRO FILE WRITTEN TO DISK * The Macro file can be executed by selecting "X" from the Macro Menu. The computer will prompt you for the filename: ENTER MACRO FILENAME => Enter the filename of the Macro program you have previously created, and press 8.4.2.3 C) CHANGE SLOT NUMBER: This command allows the operator to change the slot number of the drive under test. The default value is set to slot 2 at the start of execution. (Note: It is possible to have multiple drives under test by starting execution, then changing slot numbers. You will have to return to the original slot to view test results.) The format for this command is: C 8.4.2.4 D) DOWNLOAD DIAGNOSTIC: This command must be executed before any of the tests can be performed on the drive. This command loads the 2-80 code into the memory of the drive Controller. The FORMAT switch must be on before downloading the diagnostic in order for the program to function correctly. The format for this command is: D 8.4.2.5 I) ANALYZE SERVO: This command allows the operator to measure the seek time of the servo without an oscilloscope. The format of this command is as follows: I 8.4.2.6 J) SINGLE DO SEEK: This command instructs the Controller to seek to the cylinder specified in the command. It is used to move the heads to a specific cylinder to observe servo tracks. The format for this command is: ccc J 47 CORVUS DEALER SERVICE 8.4.2.7 L) FULL CYLINDER LOOPSEEK: This command instructs the controller to continuously seek from cylinder zero to maximum cylinder. This command can be used to check servo action and to adjust the servo board. The Controller will continue seeking until a new command is issued. The format for this command is: I. 8.4.2.8 P) PRINT QUIET SUMMARY REPORT: This command allows the operator to view the results of the sector quiet command. The results are printed in the following format: 1) SEEK ERRORS: Seek errors are represented in the following format: ccc:ddd:ee where ccc is the desired cylinder in decimat ddd is the cylinder in decimal which was actually found and ee is the error code. See the error codes in section 8.4.3. 2) CRC ERRORS: CRC errors are represented in the following format: ccc-h xxxxx where ccc is the cylinder number in decimat h is the head number in decimal, and xxxxx is the number of errors in decimal. 3) TOTAL SEEKS: This number represents the number of seeks the Controller has performed so far. The number will be in decimal. 4) SEEK TIME: This number represents the total time spent performing seeks in milliseconds. The average seek time can be calculated by dividing seek time by the number of seeks. 5) RPM: These numbers represent the minimum and maximum speed of the drive during the execution of the sector quiet diagnostic. 8.4.2.9 Q) SECTOR QUIET PROGRAM: CAUTION: This command will DESTROY data on the disk, including Controller Firmware. This command instructs the controller to begin executing the sector quiet diagnostic. This diagnostic is a very comprehensive test of the drive media and electronics. The Controller performs continuous seeks, reads and writes at random locations on the disk. The results of this test are obtained by the command documented in 8.4.2.8. The format of this command is: Q 8.4.2.10 S) READ SCAN DISK: This command instructs the Controller to perform a sector verify pass (CRC check), The resu1t!; of the scan will be added to the sector quiet results which are available thru the command documented in 8.4.2.8. The format for this command is: S 48 CORVUS DEALER SERVICE 8.4.2.11 T) SINGLE CYLINDER SEEK SCAN: This command instructs the Controller to single step across the disk. This can be used to observe the servo tracks as the heads move across the platters. The format of the command is: T 8.4.2.12 X) WRITE SCAN DISK: CAUTION: This command will DESTROY data on the disk. This command instructs the Controller to perform a bottom level format of the drive. This will not write Firmware, it will simply format the entire disk. The format for this command is: X 8.4.2.13 y) REZERO HEADS: This command instructs the Controller to position the heads on cylinder zero. The format for this command is: Y 8.4.3 Error Codes The error codes returned by the command documented in 8.4.2.8 are as follows: 00 - Hardware detected fault in read or write 01 - heads move off track while not seeking 02 - seek time out 03 - Phase lock oscillator error (PLO) 04 - sector CRC error 05 - cylinder adress mismatch 06 - read after write verify error 07 - guard band detected in data region 08 - read sector time out 09 - write sector time out 10 - bad track list overflow 11 - sector locate error 8.S Bum-In Program CAUTION: This command will DESTROY data on the disk. Selecting the Burn-In program (menu option #4) will automatically begin the polling of the host computer slots. The program determines the type of drive in that slot, and the burn-in procedure begins on all drives attached to the host system. 49 CORVUS DEALER SERVICE The Burn-In program is a rigorous read-write routine which steps through the drive one chunk at a time, reading and writing specific patterns to each of the sectors. The program divides the disk media into chunks by dividing the total number of sectors by 256. The Burn-In program begins with the highest chunk number. When the read/write test is completed for the current chunk, a random 256-sector read test is executed over the complete disk drive. When this is complete, the chunk number is decremented by one, and the test repeats. The program may be halted at any time by pressing the 8.5.1 C)ONT Entering a "C" will cause the program to continue from where it left off. 8.5.2 L)IST Entering a ilL" will cause the error list to be displayed (for example): *** SLOT NUMBER 2 *** CURRENT TIME = 0,75 TOTAL ERRORS: 0 HARD ERRORS: 0 SOFT ERRORS : 0 DO YOU WANT A COMPLETE LIST (YIN)? Slot number refers to the host slot that the disk drive is interfaced to. Current time refers to A) the pass number and B) the current chunk being tested. Total errors refers to the total (hard and soft) errors encoun tered by this program on this drive since the beginning of this program. Hard errors are those disk read or write errors which, after 15 re-reads or 3 re-writes, are still in error. Soft errors are those read or write errors which, after at least one retry, have been corrected. Requesting a complete list will result in a display of the specific tracks with the error results for each (refer to section 9.4 for detailed information on error codes). 8.5.3 R)ESTART Entering an "R" will begin the program again from the beginning. All error counters will be rezeroed. 8.5.4 Q)UIT Entering a "Q" will return to the Dealer Service Diagnostic menu. 8.6 READ BURN-IN RESULTS This program allows the burn-in results of all drives to be output to the video display or printer: *** SLOT NUMBER n *** CURRENT TIME = p,cc TOTAL ERRORS: x HARD ERRORS: y SOFT ERRORS : z [followed by a detailed listing of all errors] where n is the number of the siot that the drive is connected to, p is the pass number, cc is the current chunk being tested, and x, y and z are the total errors, hard errors, and soft errors, respectively. 50 CORVUS DEALER SERVICE 8.7 Track diagnostic The Track Diagnostic Utility is a helpful tool for exercising a particular track suspected of having media problems. This program is destructive to data, and should be used only if a backup of the data exists. Selecting option 3 from the Dealer Service Diskette will result in the Slot Number and Drive Number prompts. Enter the appropriate values. Pressing 8.7.1 C)ONTINUE Entering a "c" will cause the program to continue on as it was before interruption. 8.7.2 L)IST Entering a "L" will display an error summary (for example): *** ERROR SUMMARY *** PASS NUMBER: 0 2160 TOTAL READS 1080 TOTAL WRITES o TOTAL HARD ERRORS o TRACKS WITH HARD ERRORS o TOTAL SOFT ERRORS o TRACKS WITH SOFT ERRORS The pass number refers to the total number of loops using 256 different patterns to write to those tracks. The total reads and writes refers to the number of times the sector was written to and read from. The number of reads should always be twice the number of writes. Hard errors are those disk read or write errors which, after 15 re-reads or 3 re-writes, are still in error. Soft errors are those read or write errors which, after at least one retry, have been corrected. 8.7.3 R)ESTART Entering an "R" will begin the program again from the beginning. All error counters will be rezeroed. 8.7.4 Q)UIT Entering a "Q" will return to the Dealer Service Diagnostic menu. 8.8 Drive Diagnostics RevA This diagnostic program offers many of the same options as the RevB Drive Diagnostics, as well as some adjustment utilities unique to the RevA drive. For those utilities not listed here, see Drive Diagnostics, RevB in this chapter. 51 CORVUS DEALER SERVICE 8.8.1 AD} Selecting this option displays a submenu offering either the PLO adjustment, SERVO adjustment or QUIT. The PLO option executes the proper signal sequence required for adjusting the PLO on the Servo PCA. Execute this utility and follow the instructions in chapter 7 for adjustment of the Servo PLO. The SERVO option executes the proper full loop seek required for checking the timing of the Servo electronics. Execute this utility and follow the instructions in chapter 7 for adjustment of the Servo PCA. Selecting the QUIT option returns the user to the RevA Drive Diagnostic menu. 52 CORVUS DEALER SERVICE CHAPTER 9 FAULT ISOLATION PROCEDURES CORVUS DEALER SERVICE CHAPTER 9 FAULT ISOLATION PROCEDURES 9.1 Scope of Chapter This chapter contains procedures for testing and troubleshooting the Corvus disk system. Recommended test equipment is listed, as are error codes. A troubleshooting flowchart and list of common failures and procedures pertaining to this chapter may be found at the end of this chapter. 9.2 Introduction Like any sophisticated electronic device, the Corvus disk drive may, at some time, fail. When failure occurs, it usually occurs when the drive is powered on. If the drive is used regularly each day (8 hours or more), leave the drive on indefinitely. This will avoid placing the maximum load on the drive at power-on and extend the life of all drive components. 9.3 Tools The following test equipment is recommended as a minimum for troubleshooting and repair of the Corvus disk drive: L Oscilloscope, dual trace, 35 MHz minimum bandwidth 2. Two calibrated XI0 test probes with ground clips 3. Digital Multimeter (±O.l percent accuracy) with test leads 4. Host microcomputer: Corvus Concept or Apple II+ (48K), Corvus Interface PCA and 34-pin flatcable 5. Corvus Dealer Service Diagnostic Utilities diskette (currently these are available for the Corvus Concept and Apple II computers) 9.4 Error Codes For each command sent to the drive by the host operating system, a single-byte error code is returned. It is the responsibility of the operating system to interpret the error code and take appropriate action. Errors returned by the Controller are listed below. Errors less than or equal to 127hexidecimal are non-fatal. Those errors greater than or equal to 128 are fatal errors. The format of the error code is shown below: bit bit bit bit bit bit bit bit 7 6 5 4 3 2 1 o The eight-bit error code is broken into four segments. Bit 7, when set, indicates that the reported error is a fatal error. Bit 6, when set, indicates that the reported error occurred during the verify (read after write) sequence of the write command. Bit 5, when set, indicates that one or more retrys were attempted before the error was reported. Bits 0-4 represent one of the 21 codes which describe the error (refer to the error lists in this section). 9.4.1 Interpreting Error Codes Depending on the condition of bits 5-7, there are up to four different error codes for each error condition. To determine the actual error condition, these procedures should be followed: 1. If the error code value is greater than or equal to 128, a fatal error occurred. Subtract 128 if the value is greater than or equal to 128. 2. If the remaining value is less than 64, the error occurred during a disk read. If the value is greater than or equal to 64, the error occurred during the verify portion of a write command. Subtract 64 if the value is greater than or equal to 64. 3. If the remaining value is less than 32, no retrys were attempted. If the value is greater than or equal to 32, at least one retry was attempted before the error was reported. 53 CORVUS DEALER SERVICE When no error has occurred, an original error code value of zero will be returned. Consistent 171 or 235 errors at the same block location indicate bad disk media. Execute the CRC test and follow the instructions for sparing tracks (PRM options, Drive Diagnostics, chapter 8). Consistent 255 errors indicate that the Controller PCA may need replacing. Table 9-L Decimal Disk i:rror Lodes ~127 ~128 Non-Fatal Fatal 32 soft error 128 160 192 224 error in preparing R/W 129 161 193 225 seek timeout 130 162 194 226 seek fault 131 163 195 227 seek error 132 164 196 228 header CRC error 133 165 197 229 rezero timeout 134 166 198 230 rezero fault 135 167 199 231 drive not online 136 168 200 232 write fault 137 169 201 233 format protected 138 170 202 234 read fault 139 171 203 235 data CRC error 140 172 204 236 sector locate error 141 173 205 237 write protected 142 174 206 238 illegal sector address 143 175 207 239 illegal command op code 144 176 208 240 spare track table overflow 145 177 209 241 overlay failure 254 verify error (burn-in test) 255 controller timeout (diagnostic utilities) 54 CORVUS DEALER SERVICE Table 9-2. Hexidecimal Disk Error Codes ~7FH ~80H Non-Fatal Fatal 20 soft error 80 AO Co Eo error in preparing R/W 81 Al Cl El seek timeout 82 A2 C2 E2 seek fault 83 A3 C3 E3 seek error 84 A4 C4 E4 header CRC error 85 AS C5 E5 rezero timeout 86 A6 C6 E6 rezero fault 87 A7 C7 E7 drive not online 88 A8 C8 E8 write fault 89 A9 C9 E9 format protected 8A AA CA EA read fault 8B AB CB EB data CRC error 8C AC CC EC sector locate error 80 AD CO ED write protected 8E AE CE EE illegal sector address 8F AF CF EF illegal command op code 90 BO Do Fo spare track table overflow 91 Bl 01 Fl overlay failure FE verify error (burn-in test) FF controller timeout (diagnostic utilities) 55 CORVUS DEALER SERVICE Table 9-3. Signed Decimal Disk Error Codes ~-129 ~-128 Non-Fatal Fatal -224 soft error . . n n .. , -128 -96 -()4 -~.t. t::llUl ill plt::pC11H10 l"r~ -127 -95 -63 -31 seek timeout -126 -94 -62 -30 seek fault -125 -93 -61 -29 seek error -124 -92 -60 -28 header CRC error -123 -91 -59 -27 rezero timeout -122 -90 -58 -26 rezero fault -121 -89 -57 -25 drive not online -120 -88 -56 -24 write fault -119 -87 -55 -23 format protected -118 -86 -54 -22 read fault -117 -.85 -53 -21 data CRC error -116 -84 -52 -20 sector locate error -115 -83 -51 -19 write protected -114 -82 -50 -18 illegal sector address -113 -81 -49 -17 illegal command op code -112 -80 -48 -16 spare track table overflow -111 -79 -47 -15 overlay failure -2 verify error (burn-in test) -1 controller timeout (diagnostic utilities) 56 CORVUS DEALER SERVICE 9.5 Troubleshooting Procedures When a disk drive fails to function normally, the problem may range from a faulty sector to total drive failure. It is the responsibility of the service technician to interpret the symptoms, isolate the faulty component, substitute a replacement, and thoroughly test the drive before returning it to service. Corvus provides its Dealer Service Centers with diagnostic utilities and service documentation to aid the technician in servicing Corvus products. The Dealer Service Utility diskettes include diagnostics for testing all phases of drive operation. These utilities are described in Chapter 8, ''Dealer Service Diagnostics". Also included in this chapter are a Disk Drive Troubleshooting Flowchart, and a list of Common Symptoms and Solutions. The text in this section follows the flowchart located at the end of the section and should be referred to while following the text. In using the troubleshooting aids provided, take the following precautions: 1. Make sure all drives have the current version of Controller Firmware and Controller ROMs. Old versions of either may be incompatible with current versions of software. 2. Be sure to disconnect the ac power cord before replacing any modules. 3. Use only known good components when substituting. 4. Retest the system after each component has been substituted. 5. Check and adjust the Servo electronics each time the Servo PCA is replaced. 9.5.1 On-Site Checks There are several quick checks that can be taken that do not require disassembly of the drive: 1. Be sure the ac power cable is plugged in, and the power switch is turned on. 2. Examine the front bezel switches to verify their proper settings. 3. On the rear bezel, check that the CORCOM unit has the correct line voltage and fuse selected. 4. Verify that the interface cable is not damaged, and has been properly connected at both ends. 5. Check to see that the interface is in the correct bus slot (where applicable) of the host computer. 6. Communication with the drive must first be established in order to further diagnose any faults. The first indication of this is the READY LED. If this does not light, turn the FORMAT switch on (right position) and toggle the RESET switch. If the READY LED now lights, update the Controller Firmware on the drive (UPD option, Drive Diagnostics, Chapter 8). 9.5.2 Isolate the Problem Malfunctions in the Corvus disk system may be divided into three catagories: L Magnetic (Controller Firmware integrity, data integrity, format integrity, boot image integrity), 2. Electronic (host computer function, Corvus drive Servo, Controller, Read/Write electronics function, power supply) 3. Environmental (power stability, temperature and humidity limits). The first step in analyzing faults in the Corvus disk system is to isolate the drive from other devices. This includes removing networks (such as the Constellation and Omninet local networks) and backup devices {such as the Corvus Mirror}. Using a known good Interface PCA and flatcable, connect the Corvus disk drive to a known good host computer. Before any diagnosis of the Corvus disk drive can be carried out, the symptom must be duplicated. If the problem does not reoccur within a reasonable amount of time, run the burn-in diagnostic program overnight to thoroughly test the drive. 57 CORVUS DEALER SERVICE 9.5.3 Drive Not READY In order to troubleshoot faults in the Corvus disk drive, it must first be in the READY condition, indicated by the READY LED being lit. First, power on the drive and wait approximately 90 seconds. The READY LED alone should light, and if this does not occur, steps must be taken to correct it. 9.5.3.1 Interface The host computer interface PCA or cable could be defective, not allowing the drive to reach the READY condition. Disconnecting the flatcable from the drive PROCESSOR connector will isolate the drive. If the READY LED now lights, replace the interface components, one at a time, to isolate the faulty module. Controller Firmware During the normal power-on sequence Controller Firmware is read into the Controller RAM. If the Controller Firmware has been disrupted and no longer contains the proper code, the drive will not be READY after the power-on sequence completes. To determine if this is the cause of the symptom, turn on the FORMAT switch and toggle the RESET switch. This will reset the Z-80 Controller, and if the drive passes the hardware self-test, will ignore the Controller Firmware. If the READY LED now lights; faulty Controller Firmware is indicated and the UPDATE utility must be executed to rewrite the Controller Firmware code. After this has been done, turn off the FORMAT switch and toggle the RESET switch. This again will reset the Z-80 Controller which will read the newly-written Controller Firmware into the on-board RAM. 9.5.3.3 Power Supply Voltages If the fault has been determined to be a drive hardware failure, the first action taken should be to check the power supply voltages. Check the voltages when the drive is first received, and because of line voltage variations between locations, at the customer site also. If any of the dc output voltages cannot be brought within tolerance, the power supply must be replaced. Using a DVM, follow the voltage check and adjustment procedures outlined in section 7.3 of this manual. The ten-pin dc power connector and the two-pin motor power connector, located at the upper right corner of the drive Backplane, should be checked for a clean and tight fit. Measuring the voltages at the drive Backplane power pins will verify that the power connector and cable are in good condition. Inspect the dc power cable for breaks. The CP129 has a cable with connectors at both ends, while most others use solder connections where the cable attaches to the supply. The power cable may be faulty if the voltages are not present at the drive Backplane. Symptoms indicating power supply failure include front bezel LEOs failing to light, drive motor failing to turn or speed fluctuating, heads slamming against inner crash stop, and drive going off-line (drive error 255). Dc output of the power supply is a function of the correct ac input; the dc voltages wiH not be correct if the improper line voltage is selected. To verify that the proper line voltage has been selected, locate the CORCOM unit on the rear bezel of the drive cabinet. This unit contains the fuse and voltage selection PCA. If the voltage is change, be sure that the line fuse is also changed. (Refer to section 2.4 for instructions.) Symptoms indicating incorrect line voltage selection include dim or dark LEOs, low motor speed and extreme heat output. 9.5.3.4 RESET Line If the READY LED shii does not iight, the RESET hne may be heid down by a fauity component. Using a DVivl, check the voltages at both sides of pull-up resistor R3 on the Controller/Logic PCA. One side of the resistor is connected to the +5V supply, and should show a steady +5Y. The other side of the resistor is connected to the RESET line, and should be a TTL-level high signal (+2.5V minimum). If the voltages are not within tolerance, replace the IC at loction Bl (74LS08) if it is socketed. If it is not socketed, replace the Controller/Logic PCA. 58 CORVUS DEALER SERVICE CON TIOlU I/LOGIC IO.ID LIGINO SlllSCIllN 3101S1 • c ~ •U Figure 9-L Location of R3 for testing of RESET. 9.5.3.5 Drive Electronics If the READY LED will not light, and the power supply is operating properly and the voltages are within tolerance, it is probably due to a faulty component within the drive electronics. Sometimes symptoms indicating a faulty drive PCA are in fact caused by poor contact between connectors. Power supply connectors, PCA edge connectors, IC sockets and switch contacts are some of the connectors which may lose contact, and result in a malfunctioning drive. Reseating all connectors and using an eraser on all gold edge connector pins will help eliminate any oxidation that may have built up, causing improper contact. Also, res eating socketed ICs on the Controller/Logic PCA will ensure good pin connections. Simply disassembling and reassembling the drive may eliminate symptoms that seem to indicate faulty electronics. WARNING: Always tum off ac power and disconnect power cord before replacing any components. Replace the drive electronics with a known good set: 1. Remove power to the drive. 2. Disassemble the drive and remove the electronics card set as outlined in sections 6.3 and 6.5. 3. Install a known good electronics card set. 4. Power on the drive. 59 CORVUS DEALER SERVICE If one of the PCAs was faulty, the READY LED will now light. The next step is to isolate the faulty PCA by replacing the known good PCAs, one at a time, with the original ones: 1. Remove power to the drive. 2. Remove one known good PCA. ~. instaii une urigilldi rCA. 4. Power on the drive. Repeat the above four steps until either the READY LED light does not light after the drive has been powered on, or all original PCAs have been re-installed. If, after re-installing an original PC A, the drive is not READY, remove and label the original PCA last installed as faulty, and re-instali the other originais. If the servo mechanism is behaving irratically, the servo parameters should be checked for proper adjustment as outlined in section 7.4. If after adjustment, the servo still behaves irratically, the Servo PCA should be replaced, and the new one readjusted if necessary. If, after installing all original PCAs the READY LED does not light, the drive mechanism should be replaced. 9.5.3.6 Drive Sealed Mechanism The Drive Mechanism is a sealed unit with no internally serviceable parts. The only adjustment on the Drive Mechanism is that of the brake solenoid (section 7.5). Any other malfunctions with the Drive Mechanism necessitate replacing the drive module. Drive Mechanism failure may be due to anyone of the following: L Microchip failure 2. Drive motor failure 3. Preamp failure (where applicable) 4. Servo track failure Failure of the platters to turn could be caused by a misadjusted or defective brake mechanism. Check the brake for proper function and adjust if necessary (section 7.5). Servo tracks will weaken as the drive ages, and can be seen as noise on the PES. Connect an oscilloscope to the drive as outlined in the Servo Adjustment (section 7.4) and execute the CRC test. The PES should be quiet while positioned on a cylinder. The more noise seen in the signal, the weaker the servo track has become. A servo track that is defective will show distinct spikes in the PES (figure 9-2). Six-hundred millivolts of noise is considered the operable limit. 9.5.4 Link Inoperative If the drive powers on, spins up to speed, passes the selt-test and the READY LED Lights, certain basic circuits and sub-systems within the drive are working. The test does not, however, verify the integrity of the Disk Operating System (DOS), the disk media or much of the drive electronics and power supply. If the DOS is damaged or not properly patched for communication to the Corvus disk drive (initialization procedures, Corvus User Guide), the drive will not function properly. Linking is the process of booting the host computer with the Corvus-patched DOS. The type of DOS depends on the type of computer system, and should be a known good copy, patched for the Corvus drive. For those systems that do not store a DOS image on the Corvus drive and then boot directly from the Corvus (CP/M does not), booting the standard DOS and executing the liNK program win establish the patch. Corvus recommends that the Corvus Dealer Service Centers keep on hand archival, known good Corvus-patched copies of the DOS for the specific computers serviced at that location. This will ensure that a new DOS copy may be substituted for the users' DOS for troubleshooting purposes. 60 CORVUS DEALER SERVICE Figure 9-2. PES as a Result of Good Servo Track Oeft) and Bad Servo Track (right) 9.5.4.1 Check Link Action Boot the computer using a known good boot image or link software. When this has been done, list the directory of the drive or volume. If this fails or a drive error is returned, steps must be taken to correct this. 9.5.4.2 Power Supply The power supply voltages should be checked and adjusted if necessary before any further testing is done. Without proper voltages, the read amplifier on the Read/Write PCA will be referencing incorrect thresholds for the data signat possibly mistaking a good sector for a CRC error. 9.5.4.3 CRC Test Execute the CRC test. This will verify the condition of the drive media. The CRC test will report either no errors or the cylinder, head and sector numbers of the faulty sector. If the CRC errors are encountered, the complete track must be spared (PRM option, Drive Diagnostics, Corvus User Guide). Sometimes the CRC test will not begin (READY LED remains lit) or will not finish (BUSY LED flickers momentarily, and then the READY LED alone lights). A misadjusted power supply or improper format could cause this, as could incorrect Read/Write PCA jumper selection (refer to section 5.4). Check that these are set correctly. If a servo track is damaged, the heads will not seek past that cylinder, and the CRC test will fail. Also, a damaged copy of the CRC program could cause problems, making it impossible to trace problems without a known good copy of the utilities. 61 CORVUS DEALER SERVICE 9.5.4.4 Servo Test If servo action seems erratic or if read or write errors are encountered, the Servo Test (Drive Diagnostic utility EXR) should be executed. This program is not destructive to data. The program commands the heads to seek random sectors and verify the block of data in that sector. Dots print on the screen for sector reads completed without error, an asterisk prints for hard errors encountered during a read, and a ~uC:,;~~v., u-,z..~ y::;:~::; ~~: :~ft ~!"!"~:o; ~!",:"01_1n."'r",rI rlllrin~;:1 rp;:Id Prp~~ing RETURN will list all errors. If any errors are encountered, the Controller Diagnostic command Analyze Servo (I) should be executed, and the servo electronics checked and adjusted if out of tolerance (section '7.4). 9.5.4.5 Controller Firmware Controller Firmware shouid be rewritten at this point and the drive parameters checked (Drive Diagnostic utiiity PARAM) if this has not been done already. The Z-80 Controller does not check each block in the Controller Firmware area to check that it is legitimate Controller Firmware code, and will attempt to load it into the on-board RAM when the drive is powered on. If the READY LED lights after power-on, this is no indication that all the Controler Firmware code is intact. Rewrite the Controller Firmware using the Drive Diagnostic utility UPDATE. Rewriting Firmware is non-destructive to data. 9.5.4.6 Boot ROM Some computer systems use a boot ROM on the Interface PCA to boot a DOS image from the boot area of the drive. A faulty memory loction in this ROM may cause the drive to fail at boot time. Replace only with a tested, known good replacement. 9.5.4.7 Interface Components A defective Interface PCA or cable may be the cause of problems with the drive. Replace both, only with tested, known good replacements, and reinstall originals, one at a time, retesting the drive after each. 9.5.4.8 Drive Initialization Corvus provides drive initialization software for each computer operating system (CP/M, Apple DOS, UCSD Pascal, NEWDOS, IBMDOS, CCOS, etc). These utilities initialize the platter surface for accepting a DOS boot image (where applicable) as well as directory and data area. These areas of the disk, if disturbed either physically or magnetically, will no longer retain the correct information sought by the CATALOG or DIRECTORY listing commands. In this case, the initialization procedures (i.e. PUTGET, PSYSGEN or BSYSGEN) must again be executed to properly initialize the disk surface {refer to the Corvus User Guide for initialization procedures}. Be sure to use archival, known good copies of all software whenever initializing the drive. Any problem persisting after following the flowchart to this point lies either with the drive electronics or the disk media. The electronics should be tested, and if this is not found to be the cause of the problem, the drive should be re-initialized, using a new copy of the software utilities. 9.6 Final Adjustments and Tests When the faulty module in the drive has been replaced and the problem eliminated, the repair process is only halfway completed. Finai checks and adjustments must be made and the drive tested thoroughly overnight before it may be returned to service. 9.6.1 Proper Headlock Operation First determine which type of headlock the sealed mechanism has. To check the headlock mechanism for proper function, power off the drive and, in the case of the rnanual headlock device, secure the heads by turning the headlock screw located on the side of the sealed mechanism (no action need be taken for autolock mechanisms). Tip the servo end of the drive (the end with the Backplane PCA) three to four inches off the working surface. If the headlock mechanism is functioning properly, the heads will not skate towards the spindle. If the heads move, this indicates a faulty headlock, and the drive mechanism must be replaced to remedy the problem. 62 CORVUS DEALER SERVICE 9.6.2 CRC Test The drive media must be verified reliable before the drive can be certified usable. The CRC test should be executed before and after the drive image is restored with the Mirror, to check that no sectors have been destroyed. Tracks with faulty sectors should be spared using the PARAM option of the Drive Diagnostics (refer to section 8.3.6). 9.6.3 Servo Check and Adjust Even though the servo electronics may have been checked and adjusted at some time during the troubleshooting procedures, they must be checked now, and adjusted if necessary. Changing PCAs or adjusting the power supply voltages will affect the servo action, as will changing the drive sealed mechanism itself. 9.6.4 Install and Test Mirror If a Corvus Mirror backup device was part of the original disk system, it should have been removed from the system as one of the first steps in troubleshooting the drive. Having traced and replaced the faulty component in the drive, the Mirror should now be installed and tested. Refer to the Corvus Mirror Service Manual for procedures on troubleshooting and servicing the Mirror. 9.6.5 RESET Line Checking the RESET line should be a routine function performed each time the drive is serviced (refer to section 9.5.3.4 for instructions). Whether or not this procedure was previously performed on this drive, it should be done now. If the voltage of the TTL-high signal at R3 is not within tolerance, follow the replacement procedures outlined in section 9.5.3.4. 9.6.6 CRC Test Executing the CRC test once again, verifies that elementary communication exists, and that no sectors were accidentally destroyed by restoring a faulty Mirror image. 9.6.7 Power Supply After troubleshooting procedures have been completed, the power supply voltages must be checked once again before the drive can be tested. This is to ensure that the Burn-In test is testing a properly adjusted drive. 9.6.8 Bum-In Test The Burn-In test is the final endurance test of the drive, revealing any malfunctions as hard or soft errors. This program tests the seeking, reading and writing abilities of all drives connected to the host computer. The Burn-In test should be run, at a minimum, overnight after all repairs and adjustments on the drive have been completed. If any sectors experience errors, the Track Diagnostic program should be executed for all tracks containing suspect sectors to determine if these are recurring errors. If the errors persist, the tracks should be spared (Drive Diagnostic utility PARAM). 63 CORVUS DEALER SERVICE Figure 9-3. Checking Proper Headlock Operation. 64 DISK DRIVE TROUBLESHOOTING START) FLOWCHART t ~------~------~------.------~ BACKUP DATA IF POSSIBLE t ,.....------ PROB. NO SOLVED ? RUN TEST YES CRC FINISH YES TEST ? ~CHECK PROPER R/W r--- ADJUST t ADJUST RUN HEADLOCK OES YES SERVO t-- EXERCISE OR SERVO OPERATION YES FU~V~ON ,"---__VO_LT-yA_GE_S_ ..... ELECTRONICS TEST ERRORS FORMAT ? ~ DRIVE NO .--______1 NO CRC ~ NO TEST I NO BEZEL ~ UPDATE REPLACE SET SWITCHES ~OWER BOOT CORVUS RUN TEST ~ L~YES DOES SET SUPPLY UTILITY DISKETIE- f-- OR LINK BOOT ROM SERVO SWITCHES CRC FINISH ER~~CRS EX~W~ISE ~~VO ~~~~~~~Er (WHERE CHECK CORRECTLY NO CORRECTLY YES VOLTAGES YES RUN DIAGNOSTIC YES TEST ? FUNCTION NO ~ OK PROGRAM YES ? NO ... _TE-:-1S_T....." ERR?ORS NO ...--'-'''""C"'""H'''''EC"'""K= ...... ? APPLICABLE) AND ? l PARAMETERS ? ADJUST YES YES ~ YES DOES REINSTALL LINK AND TEST SPARE FUNCTION MIRROR FLAWED ? TRACK(S) -.1 NO CHECK RESET REPLACE VOLTAGE INTERFACE AT R3 CABLE OR PCB ~ CRC TEST REPEAT DOES INSTALLATION LINK PROCEDURES FUNCTION NO DIR AREA. t ? BSYSGEN. ETC. POWER SUPPLY VOLTAGE YES YES CHECK AND ADJUST IS DOES PROBLEM t LINK HARDWARE FUNCTION NO RUN ? RELATED BURN-IN ? PROGRAM OVERNITE YES NO SOFTWARE OR PROCEDURAL PROBLEM j C-- END ) CORVUS DEALER SERVICE SYMPTOM CAUSES RECOMMENDED REPAIR L Drive platters won't turn. A. All LEOs off and remain ac power improperly selected. Check and adjust. off. P.S. 24V misadjusted or non Check voltage and adjust. existent. 24V not present at backplane. Check de power connector and motor con nector for continuity and proper connection at backplane. Power supply defective. Replace power supply. B. All LEOs light then BUSY Brake solenoid not releasing. Adjust brake mechanism. alone remains lit. Drive motor defective. Replace drive sealed mechanism. 2. Unable to format drive. Interface cable defective. Replace interface cable. A. READY remains lit. Controller ROMs (3.xx and Replace Controller ROMs. 4.xx) on the Controller PCA defective. Controller PCA defective. Replace Controller PCA. Defective software {either Obtain known good copy of software. FORMAT or CFxx.x files}. B. BUSY remains lit Headlock is engaged. On manual-lock drives, disengage headlock. constantly. On auto-lock drives, verify that heads are free by observing heads as drive is spinning up to speed, while tilting drive. Controller unit address set Set switches correctly. incorrectly. Read/Write PCA defective. Replace Read/Write PCA. Servo PCA defective. Replace Servo PCA. Controller ROMs (3.xx and Replace Controller ROMs. 4.xx) on Controller PCA defective. Servo mechanism defective. Replace drive sealed mechanism. 3. Unable to update Controller Firmware (CFxx.x). A. All LEOs go off, remain Drive is not "Ready". Turn on FORMAT switch, toggle RESET off. switch. Firmware is wrong level for Rev A and RevB drives use different Firm revision of drive. ware. Locate latest firmware for drive, copy to drive. CRC error in Controller Replace drive mechanism. Firmware area. Servo needs adjustment. Adjust Servo electronics. 66 CORVUS DEALER SERVICE SYMPTOM CAUSES RECOMMENDED REPAIR Servo PCA defective. Replace Servo PCA. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA detective. Controller Logic PCA defective. Replace Controller PCA. Read/Write PCA defective. Replace Read/Write PCA. Drive Sealed rv1echanism Replace Drive Sealed ~v1echanism. defective. B. Busy LED lights and remains Servo needs adjustment. Adjust Servo electronics. lit. Servo PCA defective. Replace Servo PCA. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA defective. Read/Write PCA defective. Replace Read/Write PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. 4. CRC FORMAT CHECK will not begin or will not finish. A. BUSY LED lights and Front bezel switches incorrect. Verify correct setting of switches. remains lit, or FAULT Servo needs adjustment. Adjust Servo electronics. LED only remains lit. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA defective. Format not intact. Format drive. Controller/Logic PCA defective. Replace Controller/Logic PCA. Read/Write PCA is defective. Replace Read/Write PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. Servo PCA defective. Replace Servo PCA. 5. Unable to spare track. A. All LEDs off and remain Track is already spared. No action necessary. off. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA aerealve.1 r .. Controller/Logic PCA defective. Replace Controller/Logic PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective, 67 CORVUS DEALER SERVICE SYMPTOM CAUSES RECOMMENDED REPAIR Maximum number of tracks Replace Drive Sealed Mechanism. have been spared (maxim urn of 7 possible). Defective Read/Write PCA. Replace Read/Write PCA. 6. Servo Exercise Diagnostic will not execute. A. BUSY LED lights and Power Supply voltages mis Check Power Supply voltages. Adjust if remains lit. adjusted. necessary. Servo needs adjustment. Adjust Servo electronics. Servo PCA defective. Replace Servo PCA. Read/Write PCA defective. Replace Read/Write PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. 7. Computer boots into monitor. A. All LEDs off and remain Boot image corrupted. Recreate boot image (see user guide). off, or BUSY LED lights Boot image contains improper Recreate boot image using correct values. and remains lit. values. Boot program on Corvus Utility Recreate boot image using known good copy diskette corrupt. of Corvus Utilities. Boot ROM (where applicable) or Replace Boot ROM. If problem persists, Interface PCA defective. replace Interface PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. 8. Drive will not boot. A. BUSY LED lights and Drive does not contain boot Create boot image on drive (see user guide). remains lit. image. Power Supply voltages out of Check voltages, adjust if necessary. tolerance. Power Supply defective, dc Check voltages at Power Supply. Replace power cable defective. Power Supply if non-existant. If voltages are present, check dc power cable. Boot ROM (where applicable) or Replace Boot ROM. If problem persists, Interface PCA defective. replace Interface PCA. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA defective. Drive Sealed Mechanism Replace Drive Sealed Mechanism, defective. 68 CORVUS DEALER SERVICE SYMPTOM CAUSES RECOMMENDED REPAIR 9. 110 errors during normal operation. A. Normal LED display, Software currently running on Replace software with known good copy, and 11 T'I"""T"""'II. rr 1 1. • 1 r .' ___ , ____ .1_ VI dU LL1J::' Vl1 dllU lIV::'L ~UIHpULC::l UC::IC::~UVC::. .lCCAC .... U.U;.• remain off. Boot image corrupted. Recreate boot image (see user guide). Defective track. Execute CRC FORMAT CHECK. Spare any tracks returning errors. Controller/Logic PCA defective. Replace Controller /Logic PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. Power Supply voltages out of Check voltages, adjust if necessary. tolerance. dc power cable defective. Replace power cable. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA defective. Read/Write PCA defective. Replace Read/Write PCA. Servo needs adjustment. Adjust Servo electronics. Servo PCA defective. Replace Servo PCA. 10. Heads slam against inner crash stop (spindle seek). A. BUSY LED lights and Power Supply voltages out of Check voltages, adjust if necessary. remains lit. tolerance. dc power cable defective. Replace power cable. Power Supply voltages Replace Power Supply. intermittent. Servo needs adjustment. Adjust Servo electronics. Servo PCA defective. Replace Servo PCA. Controller Firmware corrupted. Update Controller Firmware. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA defective. Controller PCA defective. Replace Controller PCA. Read/Write PCA defective. Replace Read/Write PCA. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. 69 CORVUS DEALER SERVICE SYMPTOM CAUSES RECOMMENDED REPAIR 11. Sector destroyed during normal operation. A. BUSY LED lights and Magnetic-field-generating device Position device further from drive. remains lit. (video monitor) located too near drive. Boot ROM (where applicable) Replace Boot ROM. If problem persists, or Interface PCA defective. replace Interface PCA. Servo needs adjustment. Adjust Servo electronics. Servo PCA defective. Replace Servo PCA. Power Supply voltages out of Check voltages, adjust if necessary. tolerance. Ac power surge during Read/ Determine quality of ac power supplied to Write operation. Corvus and host computer. Determine types of electrical devices on same ac circuit. Large power-consuming devices should not share power with the disk drive. A dedicated ac circuit for the system is best. Controller/Logic PCA defective. Replace Controller/Logic PCA. Read/Write PCA defective. Replace Read/Write PCA. Weak media spot on platter Determine sector{s) affected, spare the surface. track{s). 12. Motor speed varies. A. N/A 24V supply out of tolerance. Check voltage, adjust if necessary. Motor wiring or connectors Check motor power connector at drive defective. backplane. Verify proper connection. 24V supply defective. Replace power supply. Drive motor defective. Replace Drive Sealed Mechanism. 13. Heads do not rezero after drive is turned on. A. BUSY LED lights and Power Supply voltages out of Check voltages, adjust if necessary. remains lit. tolerance. Power Supply voltages Check dc power cable for continuity. If intermittent. problem persists, replace power supply. Controller unit address set Set switches correctly. incorrectly. Servo needs adjustment. Adjust Servo electronics. Servo PCA defective. Replace Servo PCA. Controller/Logic PCA defective. Replace Controller/Logic PCA. 70 CORVUS DEALER SERVICE SYMPTOM CAUSES RECOMMENDED REPAIR Read/Write PCA defective. Replace Read/Write PCA. Controller ROMs (3.xx and Replace Controller ROMS. "! v'::) 0!"' C 0!",~!"0!!~!" ~C_A_ defective. Drive Sealed Mechanism Replace Drive Sealed Mechanism. defective. 14. Head oscillates after drive is turned on. A. BUSY LED lights and Controller Firmware corrupted. Update Firmware to latest revision. If problem remains lit. persists, reformat the drive using Diagnostic FORMAT utility. Front bezel sYJitches incorrect. Verir/ correct setting of s,,~~tches. Power Supply voltages out of Check voltages, adjust if necessary. tolerance. Power Supply defective. Replace Power Supply. Servo needs adjustment. Adjust Servo electronics. Servo PCA defective. Replace Servo PCA. Controller ROMs (3.xx and Replace Controller ROMS. 4.xx) on Controller PCA defective. Read/Write PCA defective. Replace Read/Write PCA. Boot ROM (where applicable) Replace Boot ROM. If problem persists, or Interface PCA defective. replace Interface PCA. 71 CORVUS DEALER SERVICE APPENDIX A GLOSSARY CORVUS DEALER SERVICE APPENDIX A GLOSSARY BACKPLANE OR MOTHERBOARD: four-slot printed circuit board which receives up to four of the drive electronics printed circuit boards. The RevA drive uses all four of these slots, while the RevB uses only three. The backplanes for the Rev A and RevB are not compatible and, therefore not interchangeable. BIT: single binary digit. Smallest representative unit of data, several of which make up characters (A-Z, 0-9, etc.). Bits may be either a one or a zero, on or off, set or reset. This may be shown by either a signal being present or not, or by a signal changing states or being constant. BLOCK: a relative quantity of data bytes. The Corvus disk defines one block to contain 512 bytes of data, the smallest addressable unit within the drive. The host operating system may define a block as 128, 256 or 512 bytes in length. Externally, since the disk drive handles data in sectors, no apparent conflict appears to the host system. BRAKE OR SOLENOID BRAKE: after power-down, before the motor speed has reached zero, so as to minimize contact time between heads and disk surface, the brake brings the platters to a stop. BYTE: any multi-bit digital value, usually eight bits long. The Corvus disk drives use eight-bit bytes. CABINET OR ENCLOSURE OR WHITE CABINET: the cabinet which contains the IMI drive mechanism, power supply and fan. The front and rear bezel attach to the cabinet basepan. A hinged access door in the bottom of the basepan allows access to the internal mirror PCA and drive electronics. CONTROLLER OR Z-80 CONTROLLOR OR INTELLIGENT CONTROLLER: the disk controller circuitry including the Z-80 microprocessor and support logic. In the RevB drives, this consists of the Controller/Logic PCA. CONTROLLER/LOGIC PCA: the Revision-B circuit board assembly containing the Z-80 controller and support logic. CORCOM: the rear bezel uint which accepts the power cord, and contains the line filter, line voltage PCB and fuse. CYLINDER: all data tracks in common vertical alignment. The 100megabyte drive has 358 concentric cylinders, the 20-megabyte drive has 388. There are three data tracks per cylinder for the 10-megabyte drive, and 5 for the 20-mega byte. DISK CONTROLLER PCA: the Revision-A circuit board assembly containing the master Z-80 processor, PIO ICs, as well as RAM and ROM memory. DISK MECHANISM OR SEALED MECHANISM: the IMI disk drive assembly consisting of platters, drive motor, head assembly and servo mechanism, all in a sealed environment covered by a translucent top assembly. The above components inside the sealed mechanism are not field-serviceable and the unit is not to be opened by any other than a Corvus factory facility, otherwise the warranty will be void. DMA OR DIRECT MEMORY ACCESS: method by which data is transferred at a very high rate, independent of the processor. The processor is put into a "wait" state, where it does no data manipulation. The DMA circuitry takes care of all details, using the Z-80 address bus for destination or origin address for data transfer. DVM: Digital Volt Meter. A meter used for measuring voltages, which shows output by means of a display consisting of changing digits, proportional to the voltage measured. FIRMWARE OR CONTROLLER FIRMWARE: Z-80code contained in the first two cylinders of the drive consisting of routines for the Spare Track Table, Constellation Network Table, and Semaphore Status Flags. The appropriate routines are downloaded from the Firmware into the on-board RAM for execution by the Z-80Controller at power-on time. FRONT BEZEL: the front panel of the white cabinet, containing the Paddleboard PCA and logo. GROUNDSTRAP: located at the lower end of the spindle in the drive sealed mechanism, the grounds trap consists of a copper metal strip terminating with a carbon button which rides on the spindle end. This device discharges any static charge which may build up on the platters or spindle. 72 CORVUS DEALER SERVICE HEAD: in the Winchester disk, very low-mass glass-ferrite, aerodynamic-shaped component, containing a wire winding. There is one head for each data surface. The heads float 18 microns above the platters on a cushion of air. When current passes through the winding, an electromagnetic flux is induced into the platter surface representing a bit. HEADSTACK: casting to which all heads are attached. Located in the top of the headstack is the microchip responsible for head selection and signal buffering. IC: Integrated Circuit. A hybred, densely populated wafer of silicon containing many resistors and transistors. MEGABYTE: one million bytes. MFM (MODIFIED FREQUENCY MODULATION): a method of writing information on a magnetic surface which allows a higher bit density to be used, therefore increasing storage capacity while decreasing size. MICROLOGIC PCA: the Revision-A printed circuit assembly which contains the master Z-80 processor and support logic. In later Revision-B drives, this circuitry was combined with the Drive Controller PCA to create the Controller /Logic PCA. NRZ (NON-RETURN TO ZERO): digital representation of information used by microprocessors. PADDLEBOARD: the small PCA located on the front bezeL which contains the three LEOs and four tunciivll switches. PCA: Printed Circuit Assembly. The Printed Circuit Board, assembled with all its components. PCB: Printed Circuit Board. Epoxy board with a copper circuit etched into it. The PCB is the bare board without the usual components such as resistors, transistors and integrated circuits. PLATTER: eight-inch circular disks coated with a magnetic oxide that will retain a magnetic flux induced by the read/write heads. Both surfaces of each platter may contain data. The 10-megabyte drive has two platters, while the 20-megabyte has three. PREAMP: circuit responsible for initial amplification of analog signals. In the IMI drive, the first circuit downline from the headstack. In some drives, this is located on the underside of the drive mechanism, while later designs moved this to the Read/Write PCA. REAR BEZEL: the rear panel most area of the cabinet, containing the flatcable connectors for the interface cable, video connectors, power cable and fuse holder. The serial number is located on the rear bezel, also. SECTOR: each track is divided radially into 20 segments. Each segment is one sector, and contains one block of data, one CRC value, header information and tailer information required by the disk controller. SERVO PCA: the printed circuit assembly responsible for positioning the servo mechanism and the read/write heads over the appropriate track. SERVO MECHANISM: the device in the drive sealed mechanism which receives current from the servo electronics and positions the head stack. SINUSOIDAL WAVE: a wave form that represents periodic oscillations. TRACK: all points on one surface with the same radius. Tracks are configured concentrically on each surface. WINCHESTER TECHNOLOGY: a unique design first developed by IBM as a means to reduce the size of a disk drive while increasing its capacity and removing the possibility of contamination of the disk components. The result was a disk unit much smaller than the traditional l4-inch disk platters with equivalent capacity. This is due to new head design and the use of thp sea1ed-environment used with the disk drive which does net anew the external atmosphere inside the disk mechanism. Inherent in this design are heads that rest on the platters after the drive is powered off. The Corvus disk system uses International Memories Incorporated (IMI) Winchester disk drives. READ/WRITE PCA: the printed circuit assembly responsible for changing the data received from the heads in MFM format and converting it to NRZ format before passing it on to the Controller circuitry for manipulation. 73 CORVUS DEALER SERVICE APPENDIXB PARTS LIST FOR EIGHT-INCH DRIVES CORVUS DEALER SERVICE APPENDIXB PARTS LIST FOR EIGHT-INCH DRIVES PARTS LIST FOR CORVUS 11MB/20MB DISK DRIVES PART NUMBER DESCRIPTION 2400-01530 BOTTOM PAN ONLY 2400-01531 TOP COVER 2400-01636 SUPPORT BRACKET, DRIVE MECHANISM 2600-01143 FAN TORIN TA300 2600-01453 AC CORD FOR TORIN TA300 3010-08026 PCAMIRROR 3150-01844 R. BEZEL ONLY 3150-01846 F. BEZEL ONLY 4000-01665 CP411 POWER SUPPLY, COMPLETE 6010-01447 AC LINE CORD 8010-08001 PCA PADDLEBOARD 8010-08040 FLATCABLE, PADDLEBOARD-BACKPLANE 8010-08042 FLATCABLE, INTERFACE (5 FT.) 8010-08067 HARNESS, POWER SWITCH (4-WIRE) 8010-08071 HARNESS, AC (CORCOM, SWITCH CON., P.S. CON.) 8010-08078 FLATCABLE, MIRROR-DRIVE 8010-08079 FLATCABLE, MIRROR-PROCESSOR 8010-08103 8" DRIVE BASE, COMPLETE (FAN, F. and R. BEZELS) 8010-08109 F. BEZEL, COMPLETE (PADDLEBOARD, NAMEPLATE) 8010-08116 MIRROR PHONO HARNESS (MIRROR HALF ONLY) 8010-08118 R. BEZEL, COMPLETE (FLATCABLES, MIRROR HARNESS, CORCOM) 8010-08225 FLATCABLE, REMOTE VCR MISC. HARNESS, MIRROR PHONO 7710 11MB DISK MECHANISM 7720 20MB DISK MECHANISM 310001 R/W PCA w/o on-board preamp 310101 R/W PCA w/ on-board preamp 310006 Servo PCA, RevA, manual lock 310176 Servo PCA, RevA/RevB manual lock 310221 Servo PCA, RevA/RevB auto or manual lock 310071 Micrologic PCA, Rev A 11MB 310181 Micrologic PCA, Rev A 11MB 310156 Controller/Logic PCA, RevB 11MB/20MB 310062 Drive Controller PCA, Rev A 11MB 310021 Backplane PCA, 11MB/20MB (specify RevA or RevB) 330020 PROM, Micrologic, Rev A 330092 PROM, Micrologic, Rev A 330063 PROM, Micrologic, Rev A Prices are to be found in the Corvus Dealer Service Administration Manual. 74 CORVUS DEALER SERVICE PCA PART NUMBER CROSS-REFERENCE ASSEMBLY NUMBER DESCRIPTION MFR. PART NUMBER 310001 R/W PCA w/o on-board preamp 811-01427-001 Q11 "1 "}nc: V,,'" R IW pr A \All r,"_h{"l~rrl nro"' ...... _ ...... """ ..... __ ,.,...... i ..... V .... 310101 c ~ •... ~ t" 310006 Servo PC A, Rev A 11MB 811-01428-001 310176 Servo PCA, RevA/RevB manual lock 811-01398-001 310221 Servo PCA, RevA/RevB auto/manual lock 811-01368-X01 310071 Micrologic PCA, Rev A 11MB 811-01441-001 310181 Microiogic PCA, RevA 11MB 811-01393-X01 310156 Controller/Logic PC A, RevB 11MB/20MB 811-01394-X01 310062 Drive Controller PCA, Rev A 11MB 811-01439-001 310021 Backplane PCA, Rev A/RevB 11MB/20MB 811-01431-X01 330020 PROM, Micrologic, Rev A 814-00549-002 330092 PROM, Micrologic, RevA 814-00549-003 330063 PROM, Micrologic, RevA 814-00549-004 In the future, the manufacturer will be silkscreening PCAs with new eleven-digit part number. Above is the cross-reference chart for assembly numbers (which should be used when ordering PCAs from Corvus) as well as the new manufacturers' part numbers. The "X" found in some manufacturers' part numbers refers to various revision level digits that may occupy that location. 75 CORVUS DEALER SERVICE APPENDIXC PCA COMPATIBILITIES CORVUS DEALER SERVICE APPENDIXC PCA COMPATIBILITIES SERVOPCA REV A DRIVE REV A DRIVE REVB DRIVE REVB DRIVE MANUAL HEAD LOCK AUTO HEAD LOCK MANUAL HEAD LOCK AUTO HEAD LOCK asm 310176 asm 310221 asm 310176 asm 310221 (for use with micrologic (if used with micrologic asm 310221 PROM #330063) asm3100n use asm 310006 PROM #330063) (if used with micrologic (for use with micrologic asm 310181, use PROM #330020) PROM #330092) asm 310221 (if used with micrologic asm 310071, use PROM #330063) (if used with micrologic asm 310181, use PROM #330092) CONTROLLER PCA REV A DRIVE REV A DRIVE REVB DRIVE REVB DRIVE MANUAL HEAD LOCK AUTO HEAD LOCK MANUAL HEAD LOCK AUTO HEAD LOCK asm 310161 asm 310161 asm 310156 asm 310156 MICROLOGIC PCA REV A DRIVES REVB DRIVES MANUAL and AUTO HEAD LOCK MANUAL and AUTO HEAD LOCK asm 310071 none asm 310181 (see SERVO PCB COMPATIBILITY above for servo pcb and ROM restrictions) READ/WRITE PCA REV A AND REV B DRIVES, MAUAL AND AUTO REV A AND REV B DRIVES, MANUAL AND AUTO HEAD LOCK, HAVING PREAMP PCB asm 310026 HEAD LOCK, HAVING PREAMP PCB asm 310131 (discreet circuitry) OR asm 310211 (traces only) asm 310001 (no on-board preamp) asm 310101 (with on-board preamp) BACKPLANE/MOTHERBOARD PCA REV A DRIVES REVB DRIVES asm 310021 (with Rev A jumpers installed on backplane) asm 310021 (with RevB jumpers installed on backplane) PADDLEBOARD PCA REV A DRIVES REVBDRIVES PCB has "REV A DRIVE 7710" etched onto it, three asm 7710/2OC function switches and 10O-mil 34-pin flatcable connector asm 40010011 76 CORVUS DEALER SERVICE APPENDIXD ASSEMBLY AND SCHEMATIC DRAWINGS CORVUS DEALER SERVICE LIST OF SCHEMATIC AND ASSEMBLY DRAWINGS Assembly Dwg, Metal Cabinet...... 78 Schematic Dwg, ASM 310176 (1 OF 3) ...... 112 Assembly Dwg, Detail ...... 79 Schematic Dwg, ASM 310176 (2 OF 3) ...... 113 Assembly Dwg, Front Bezel ...... 80· Schematic Dwg, ASM 310176 (3 OF 3) ...... 114 Assembly Dwg, Rear Bezel...... 81 Assembly Dwg, ASM 310176 ...... 115 Assembly Dwg, Wiring Harness/Corcom ...... 82 Schematic Dwg, ASM 310006 (1 OF 3) ...... 116 Assembly Dwg, AC Power Switch...... 83 Schematic Dwg, ASM 310006 (2 OF 3) ...... 117 Assembly Dwg, Mirror Phono Harness ...... 84 Schematic Dwg, ASM 310006 (3 OF 3) ...... 118 Assembly Dwg, Paddleboard PCA ...... 85 Assembly Dwg, ASM 310006 ...... 119 Schematic, Paddleboard PCA ...... 86 Schematic Dwg, ASM 310071 (1 OF 3) ...... 120 Assembly Dwg, Paddleboard II ...... 87 Schematic Dwg, ASM 310071 (2 OF 3) ...... 121 Schematic Dwg, Paddleboard II ...... 88 Schematic Dwg, ASM 310071 (3 OF 3) ...... 122 Assembly Dwg, CP140 Power Supply...... 89 Assembly Dwg, ASM 310071 ...... 123 Schematic Dwg, CP140 Power Supply (1 OF 2) .. 90 Schematic Dwg, ASM 310181 (1 OF 3) ...... 124 Schematic Dwg, CP140 Power Supply (2 OF 2) .. 90 Schematic Dwg, ASM 310181 (2 OF 3) ...... 125 Schematic Dwg, CS100 Power Supply...... 91 Schematic Dwg, ASM 310181 (3 OF 3) ...... 126 Assembly Dwg, CP411 Power Supply WIRING.. 92 Assembly Dwg, ASM 310181 ...... 127 Assembly Dwg, CP411 Power Supply...... 93 Schematic Dwg, ASM 310061 (1 OF 8) ...... 128 Schematic Dwg, CP411 Power Supply (1 OF 2). .. 94 Schematic Dwg, ASM 310061 (2 OF 8) ...... 129 Schematic Dwg, CP411 Power Supply (2 OF 2). .. 95 Schematic Dwg, ASM 310061 (3 OF 8) ...... 130 Schematic Dwg, CP129 Power Supply (1 OF 3) 96 Schematic Dwg, ASM 310061 (4 OF 8) ...... 131 Schematic Dwg, CP129 Power Supply (2 OF 3) .. 97 Schematic Dwg, ASM 310061 (5 OF 8) ...... 132 Schematic Dwg, CP129 Power Supply (3 OF 3) .. 98 Schematic Dwg, ASM 310061 (6 OF 8) ...... 133 Schematic Dwg, ASM 310001 (1 OF 4) ...... 99 Schematic Dwg, ASM 310061 (7 OF 8) ...... 134 Schematic Dwg, ASM 310001 (2 OF 4) ...... 100 Schematic Dwg, ASM 310061 (8 OF 8) ...... 135 Schematic Dwg, ASM 310001 (3 OF 4) ...... 101 Assembly Dwg, ASM 310061 ...... 136 Schematic Dwg, ASM 310001 (4 OF 4) ...... 102 Schematic Dwg, ASM 310156 (1 OF 4) ...... 137 Assembly Dwg, ASM 310001 ...... 103 Schematic Dwg, ASM 310156 (2 OF 4) ...... 138 Schematic Dwg, ASM 310101 (1 OF 3) ...... 104 Schematic Dwg, ASM 310156 (3 OF 4) ...... 139 Schematic Dwg, ASM 310101 (2 OF 3) ...... 105 Schematic Dwg, ASM 310156 (4 OF 4) ...... 140 Schematic Dwg, ASM 310101 (3 OF 3) ...... 106 Assembly Dwg, ASM 310156 ...... 141 Assembly Dwg, ASM 310101 ...... 107 Schematic Dwg, ASM 310021 Schematic Dwg, ASM 310221 (1 OF 3) ...... 108 (For Rev A Drives) ...... 142 Schematic Dwg, ASM 310221 (2 OF 3) ...... 109 Schematic Dwg, ASM 310021 Schematic Dwg, ASM 310221 (3 OF 3) ...... 110 (For Rev B Drives) ...... ~ ...... 143 Assembly Dwg, ASM 310221 ...... 111 77 r . STRIPE -\ -=------~ .--~- ----ill ---IT) SEE DETAIL A .------. ·OJ ---.. ' .'" :-~~~-llillH Iii '''''r-' . . " '"TTT;;;;.;;:;.J i· l; Or'JAIL A ~~PL N(i:1CALE .~. /~ I =~ ..~ /' , ~------.,@18PL ." ! UNLESS OTHERWISE SPECIFIED ...... CORV08 SYSTEMS' DIMENSIONS "RE IN INCHES TOUIlANCES ON 11' ~ 2D2II 0;... "-- SIn .-. CII i!t\JI NEXT ASSY US&D ON I APPLICATION .. :...--.-_., ... - ASSEMBLY OWG/ METAL CABINET • • (~ ------~~~~~~~~~~~------~J;~~~~~~P~·y~~l~~~ ~l$ .:~ ~~ol,~::vl :ES::::RIPTION ~:) :; ~ - ::.::::;: . -:; :- =. - - ,...... , '""'~-,.,.-.." . ~ 2~~.=,Ji,-~ .. ",\/. SCA ... NljNE "(:~D·Y. ~'::_;;I ~ Sf-fje).:/ol ASSEMBLY OWG, FRONT BEZEL K --- '- . I-'---'------'-=-+--=-+_---=-==-=-::~~-~=~'~-t~-=~J-~-~-~~:;~:~~; ,_ ::~,~~, / _,,-,\...i C =CC ~LGKAUE- /-z:~, > L,-,v-r 7, ~ I ! 71 G 1 S-7 i 0 ,---~r.:. 6A-~ \ \ 9 o~. i ~ 5f(K ;:EW 3 ~VC:::~='.':::- " r J7: ,.... j '-" ! - .; I '- ~ .• ,j /. -- .. \,- ...... -- '. '. :\.1<7 'C ~1"3<1 ... , .. TO:D __ .oo:> .... G~_.-r ...o.o._Ot.n' ASSEMBLY OWG, REAR BEZEL CORVUS SYSTEMS, INC. -.e. UN ~ ...... ·9' 81 WIRING HARNESS,K¥20 MB CORCOM Assy. DRAWING 82 ---{2' .)c. ----14"------~------...... r-;- , / ,) r- 4 fjL .,'4)-/ ~~ :'TE~\lLES5~THERI/IS= SP:C!F!:C [iJ SFACf TIE WRAP':: :JENL'y I)N CABLE (2] SHOWN aDEN TIE I/JP.,APS ;:':::R (LA;;IT¥ .'. k,A,PS 5H,J~LD 3E P~L:___ c: TI6HT~ ,,' r -tvl hllh7,', HAK' , -~'I(),_~, /~'~" '1" t) P"''':S\~/'T~';;v., I,J, 83 BLACK 2X@-\ WHITE 2x (4) \ SHRI~IK IllP,IW, .ArrR0X '/iL~ I-1Y(/;) " \ \ (1)---- CORVUS SYSTEMS, INC. HARN~ SS M IRRCJ~\ PHONO Assy. DRAWING 76030'2Oi 84 pcr PEv DESCRIF~IO~~ 114 8 RELEASE TO PROD. 110 C ADD 0 lODE TO NOTE 2 136 o CAP CHANGE t / / 1310 I ~5°1 I , 1-- 062 I I ! ,~ ~i 0 ODI 0 02 0 03 RPI 0 lI) co I UI I:~LS05 0 0 1 SI S2 S3 S4 ~TES: UNLE=3 OTHERWISE SPECIFI ED llJPERMANE'.- _Y MARK OR IDENTIFY REV LEVEL APPROX WHERE S -'~ ,\ t\J 2 SQUARE F~= INDICATES PIN I OF I C AND R-PAK POSITIV E END OF :":',?ACITOR, CATHODE OF DIODE. SEE SEPERA1E LIST OF MATERiALS CORVUS SYSTEMS. INC A C(::W:l\ARTV nlATr" 'DA nnT t:RnA un 'Dr A AF'v =- 114 110 ') - ) "/ . +5V RP! 4 NC 84 +5V r1:ND. RP! 01 1/' FAI L 3~ ))-______5 ~6 32 '))--______1_3~12 03 +5V +5V . J RDY 1- ''>>-______---If ~J +-5V ~----..:.....----___7>24 FMT 15, k ">>--______----', I N.O.-S3 ~+ I CI )26 MUX --L .OLu F NO. S2 15V ''\ 28 LSI I 77 20,22\3~ ~0------34 : N.G SI CORVUS SYSTEMS iNC _CAll, L ~O I\lE 'r r ...... '. DATI< '5-51 PADDLE BOARD SCHEMATIC u/,--1,GRAM DRAWINC HUMaER SCHEMATIC, PADDLEBOARD peA , PCO REV OESCRI PT~N ___-+-IO_A_T_E -+A_P~P~RO~V~E-40 2: I A PROD REL !lp-14 -/ ~~.-, l~; -9- 1"-- 01 02 03 cp/ 0 0 -¢-0 /~. 0 0 v ~ V8 UI .- / ~ U2 R v LS05 / 0 555 I L___ J I @]~ r---/o i ~/ /G . ,/"1 "-RPI -1+C3 ~ CCI) (IT) ~ r I , I l/1 r----.. ,.------." 54 . .--1 ~s, c S2 ~S3 0 0 l'- ~ 0 roo -9- ~ ~ 1/ 71 II 1/ BOA 1:1 0 ThiS document contams proprietary UNLESS OTHERWISE SPECIFIED information and is delivered upon tne DIMENSIONS ARE IN INCHES * * CORVUS SYSTEMS expressed condition tnat It will not be ~ 2029 O'Toole Ayenue. San Jose. CA. 9513i TOLERANCES ON used directly or indirectly m any way * detremental to the onterest of CORVUS ANGLES DECIMALS SYSTEMS 2 SQUARE PAD I NDICATES PIN IOF Ie AND R-PAK I DRAWN BY A DATE OF DRAWING ALSO CATHODE END OF LED. :t .XX :t . ;(Ot!fiV' ./ q /2 ~ Fi I ~ ______~ ______~ ______,~XX~X~+~' __~~I~H~Y ENGINEER PA DOLE BOAR D II mPERMANENTLY MARK OR IDENTIFY REV LEVE L M_A'~ERIAL ~L~~.~~~~--~~7~·~~ ______-+ ______~ ______~ APROx. WHERE SHOWN. APPROVED NOTES UNLESS OTHERWISE SPEC IFIED. t--~::::::--t-----:-:~=--J..;;;;;;";;"------"""""~~------1 A SSY DRAWl N ~ 5 02.':; NEXT ASSY USED ON FINISH _ APPROVED 1---..,----,.------'---,------1 APPLICATION ------SCALE 1 I SHEET OF ASSEMBLY OWG, PAOOLEBOARO II , REVISIONS PCO REV DESCRIPTION I DATE IAPPROVED 1211 A PRoD REL ~t?-/~ / L$7" RPI +5V ? I.IK +5V RI > ~:0>)...:2~....e-----4,---:)_> ~7 RESET ??.~'-'iVI.? LS05 ~_-----<'--"-"-i3~~4---, ~ +5V 50 V . 8 R P I 1.1 K 0 I AAA ~ VVV ~~ FAI L ~ ______5~~~ ______I.I_K ______9~~~8 ______~ ~ +5V V 5 RPI J LS05 AVAy"v LS 0 5 13~2 II ~..... ,.,~~I0=-- ______---, 32 ~--~------~~ 1-5V ~ 03 +5V IX) ~ ~~~ ROY ... IX) ~~ ~ACT AAA 2 D2 v v 17 I.IK 3 RPI +5'1 JlyAv"v I.IK 0 15,10) VvAv Ie! }o I.IK rD.1 \.1F 50Y 20,22> 2~F15V 0 ) 24 FMl r N.O. 53 33.,34 0 ) 26 c.'? MUX N.O. '-'~ 0 )28 LSl CI N.O. v, This document contains proprietary UNLESS OTHERWISE SPECIFIED information and IS delivered upon Ihe * * CORVUS SYSTEMS DIMENSIONS ARE IN INCHES expressed condition that II will not be * ~ 2029 O'Tcole A~nue. Sen Jose. CA 95131 TOLERANCES ON used directly or mdlrectly In any way detrementai to the interest of CORVUS ANGLES DECIMALS SYSTEMS DATE OF DRAWING ± .XX ±. DRAWNBY HUY 9- 2-81 PADDLEBOARD II ~I-======~~======~-~-MA-T-ER-IA-L--~·X-XX--±-.--~L~aC~'~~KE~D~0 __ ~_EN_GIN_EE_P ____~ ______~~ ______-; """iPPRovED ~~~~~~~--~~~~~~~~~~~~~~~ SCI~~MATIG DIAGRAM I~O-'807 I-_N_E_XT_A_SS_Y_L--_U_S_ED_O_N_-t -FINISH ~ APPROVED APPLICATION ~ SCALE -- I I SHEET I OF I SCHEMATIC OWG, PAOOLEBOARO II APPLICATION DATA l!Q!lli1. Microcomputer Power, Inc. INCLUDING: 1.SCHEMATIC CP140 2272 Calle de Luna. Santa Clara. CA 95050 2.PARTS LIST 3.SPECIFICATION FIXED-DISK (401) Il1-0215 TWX 910 331-7894 4.0UTLINE & MOUNTING DRAWING SERIES SPOCIFlCATIONS: OVERLOAD AND SHORT CIRCUIT PROTECTION: AUTOMATIC CURRENT LIMIT! AC INPUT: 11S!230VAC ±10% FOLD BACK 4l-63Hz OVER-VOLTAGE PROTECTION: SET AT 6.2 DC OUTPUT: ±.4VDC ON ±SV OUTPUT ONLY STABILITY: ±.3% FOR 24HRS AFTER WARM-UP VOLTAGE CURRENT (AMP S ) INPUT FUSING: RECOMMENDED, FUSE AT S 8.0 6A FOR 11SVAC, 3A FOR 230VAC TE¥~ERATURE COEFFICIENT: ±.03%!Oc MAX 24 2.S(4.0)Pk COOLING: UNITS ARE FULL RATED TO SO°C 12 1.2 IN FREE AIR, MUST BE FAN COOLED WHEN MOUNTED IN CON- -12 O.S FINED AREA -S 3.0 TEMPERATURE RATING: O-SO°C - 100% LINE REGULATION: ±.OS% FOR A 10% 60°C - 60% LINE CHANGE lO°C - 40% LOAD REGULATION: ±.05% FOR A SO% EFFICIENCY: COMBINED EFFICIENCY LOAD CHANGE APPROX. S5% @ 11SVAC FULL OUTPUT RIPPLE: 3mV Pk-Pk MAX LOAD ON ALL OUTPUTS TRANSIENT RESPONSE: 30uSECONDS CONSTRUCTION: ALL ALUMINUM CHASSIS FOR A SO% LOAD CHANGE WEIGHT: 11LBS (S.OKG) DC OUTPUT OVP OPTIONAL DC OUTPUT \ 14.25 I ..I 25 75 / 1. ~5.00 \ 8.75 11-tt 625 I I 11 MAX. o 0 0 0 o 0 00+ COM00 -DO ~~ ~ - COM+ r· p: \lADJ. nnnn O'lADJ. ~ P b\lADJ. r- 0 / 0 0 44 / Jl1 I \ .50 ACINPUT .188 DIA. MTG. HOLES 16 PLACES 1.25 0 2t:t 0 14 I :1 ASSEMBLY DWG, CP140 POWER SUPPLY REF. DES. CP139 CPl40 DESCRlPTlOO Cl 4700/:>OV 4/UOnUV REF. DES. 0'140 CP141 DESCRlP'T;a; C2 330!35V 330 3,V C2 8800llSV 8800/1 51' C4 6 220 16V 220 15v CAP"CITOR, ELECTROLYTIC C4 47/50V JV 4~ CAPAC ITOR, ELECTROLYTIC C5 1000/16V 1000/16v C5 9 100/25V 100 25V C3 7 ,005 100V .00 laC v CAP"C TOR, --'--'-U1 C6 470/J5V 470 35V CR2 3 4 A.E3S AoE3S RECTIFIER A 100V C7 CR5 AoEIC AoE1C RECTIFIER 110. 200V 2Z00/35V 2200/ J5V Tl'IANSFORMEA CONNECTION DIAGRAM CR6 IN752A IN752A CJ ,8 .UUI LUUV ,UU, V CAPACITOR FILM ZDlER DIODE, 30UMII IN753A IN75)A n51101tC ~ 'CRl,Z MR751 MR751 RECTIFIER, 6A 100V CR7 Rl 7,12 47 47 BUSS WIA£ .lJMPfAS BUSS WJAE .--t:RS IFIoCroRY SET) CR4-6,9 AEIC AEIC RECTIFIER, lA 200V R2 20 2.2K 2.2K CR7,8 AE3B AE3i3 RECTIFIER, 3A lOUV R3 750 750 CR3 IN752A IN75ZA ZENER DIODE 300HW R4.6 J.9 .9 R5 8 18 6.8 6.8 Rl,l1 1.1K 1.1K RESISTOR, 11211 CF <% R9 1\ 16 1.5K 1. 5K R2 1.8K 1.8K !, RJ 750 750 Rl3 ISO 15C RESISTOR, 1/2W CF 5% Rl4 2.7 2. ; R4-6 10K 10K R17 ,19 330 3)0 I 1t7 9 330 330 R21 1.1]( 1.1]( W RIZ 4.7K 4.7K RIO 22 1500 150C POTENTlOHEIER, 211 i/II R8 .IZ .1Z RESISTOR 2W WW &15 .22 .22 RESISTOR, 2W W j SCRI 50)08L53 S0308L~1 SCR, 11" JUV -t RIO .22 .22 RESISTOR, 2W WW 503031.53 SO)03L5) JA Jm' R13 1500 1500 POTENTIOMETER 2W WW 'SCR2 ~CR • IQl 4 TIP)IA TIP3iA TRANS I STOR, POWER NPN TRANSISTOR, POWER NPN IQl TIP31A TIP31A 2 lS2219A 2N2219A TRAN5ISTO~, SIGSAL NPS Q2,4 2N3055 2NJO:>, TRANSISTOR, POWER NPN 7 ~N2~0:; 2N290 TRA.'15ISTOR, ~IC:NAL~P Q3 ZNZ219A ~NE!!A TRANSISTOR, SIGNAL NPN l'12 UA '2)~ UA72)C 1, C. VOLTAGE l CR~ e 24 .1 C4 R6 CR4 t .~ I + a C2 i Q\ I I,.. -- ~ I 1 CRI : 10 II 1, , ~ --- ~ 8 ~" u, J + Rr RS RIO R2 r R, R20 ...... ------;10 + C2 TI ~L------~--~r~ ~ NOTES I \o()I.lo\GE toEA_EtoENTS AT II~ w: I ~ toEASl.REIoIfI'lTS AT 11~ .....: INPUT FULL LOAD ON OUTPUT INPUT FUll LOAD ON CUT PUT 2 ALL '.Q..TKoES REFERENCED TO ().JTPUT ~ 2 ..... L '.Q..TKoES RfF[RENCl:D TO COM OUTPUT SCHEMATIC DWG, CP140 POWER SUPPLY (1 OF 2) SCHEMATIC DWG, CP140 POWER SUPPLY (2 OF 2) +?4 = LI ~, r---~----'------~------~~~~~A~--~ 1 RIS CR2~ 1 ~> I I .., ~R22 I ~~ I <;. CRB CR21J I U3 I R5 I 4l ~ <.~ C4 \ 7 +12 .. ~ II 12 13 6 r::::==J VAC 1 t L2 [ ...... RI~ lC17 +,. +.... "'r- RT 1 I CIS ASSY 10379 I 8 CI4 VAC FI ~. (T2-4 -::-(> QS'----~.rt I Cf~d +...,.. T2-3 (>- T2-5 3 l'" 4~ CR 17 CRIB ;:::: C2 -12 C3 --0 T2-2 2 U4 T2-7 ). T2-1 C / .> ,0 6 I) T2-S( >--1\: 12 1 -, R31> ~ __-J AC GND +1 C20, <> ~r I V2 U2 "'r- C21, S T2 14 ___2 ...II ,[]VAOJ C22 c; R2 TI I ~> R25 > MODEL CS - 100 > ~R26 > DWG NO 10391 >R30 REV C Q9r------~~--~AV~VAV_--._----~~~A~---4----~ R27 R28 1 1 0-- TI-14 , I ~------~I!~{------·------~O~------~(~------~ ,.. CR20 C25 J1 J1 SCHEMATIC OWG, CSIOO POWER SUPPLY REVISIONS PCO REV DESCRIPTION ['1.(:-:; CHL: lGE ® CONNECTION CHART 'fJlRE FROM TO 2 COlOR PIN X FORMER NOTES ~ ::r:O :: "trl ClJkD :JJ:,c-7 - 0 FAN CORD veL 3 C DRr'l ~ B ELU 5 A COtlNECTION CHART ."-RN Eo If.. 2> I~"W .L.3~! S J q:s 3,8 .. 9 II'T lISED "- WP~PS SfIQ~LU ~E. ~'ULL~L THiHTLY ThiS document conlalns proprietary UNLESS OTHERWISE SPECIFIED Inlorm.,hon and IS dell"ered upon the DIMENSIONS ARE IN INCHES * * CORVUS SYSTEMS e_DntsseCI COflOltion Ih •• II ""II not be TOLERANCES ON uSed directly or mdlrectlY In any .ay * ~ 20290Ioole"~.Son~ 0.95131 d@lremltnf.' 10 the Interest ot CORVUS I\NGLES DECIMALS SYSTEMS. DI=IAWN B'f' ;:lA.TE OF ORAWING :!: .XX :!:. H. FIll -1 /132 WIRlNG. POWER SUPPLY :!:. xxx CHECKED BY ENGINEER MI\TERIAL CP411 I~N;':E:;XT;:-:A;;;;55;y;-T-U~S;ED;;-O;:;;N~~~FI;"NI"'SH------~~~~:------~ !i~ SEf.', llLY APPLICATION SCALE r I r , I C ASSEMBLY OWG, CP411 POWER SUPPLY WIRING 8 I 7 I 6 I 5 4 I 3 I 2 I 1 REVISIONS ...... , .. P - c c r----r-----,r---,------,------.. ------ r__+_~r_-+_-----r_------4_------~_+_--~-+------~------4_------ ~~--~~+_---~--.3-~----r_--N-~-S~,~K-E-P------4_-~--·--IO~b~63~-~4- Ib B IS" - B S 14 MT6. KIT TO-3 088- lO/30 ~~~r-~+------r-~M~T~G~.--~K~IT~L-~[~AP~A~L=rr-0~R----4--0-~----21 13 O-I-l9------~ -----.. -.------~~~~~~~~~~/~/~5~V-~--C~A~P~A~C~IT~O~R--~A~LU~M~~£~L~EC=T1 12 ~.---4-~/O~3~-~/O~D-~-----~ /I ~~--~--~R~l~"-t>.--~~)~~D~I~O~D~E~B~R~I~D~G=t------4--(-~---I-O-25~3-1 10 I C-. -R-E-e:,-UL-A-TO-R,--,-U-Z.----i-'-30---21)4---74- --.. ---- ~-+---~--+------~-I-.I ") -V-O~LT:-:-A-6~f - -+--2.000 I B 2.N3773 TRAN~ISTOR £14 171 - 10244- -- ~_+_-t--:::--+_:~=-:-::=-----r_-=::-:-:-:_::_:_:=:_;::_-_::_:-=------+_-:-::::-_:__-;-::;-::-;-:;:_-'- - ~_+_~~-~~~NN-3~50:-:-5~S9-----+-~TT=RR~~-N~~SS~,'SS=T~~OD~RR--a2.. 7 _/~,_3 ______4_-'-l-/---'O-2-4-3------3 L b b " a I, 2.,b 17 I . 10 2 bl ~~--t__:::--+_------~------~~---4_--~-- ---~ - 5" ~-+--:--r-~+------r-~T~R~A~N~5~F~D~R~M~E=R------~~O~B~Z--~'9~2~6~~----I 4- - 1 3 PRINTED CIRCUIT BOARD OS/ -19/4~ I 2. PRINTED CIRCUIT BMRD OBI -/9/H- 1 1 CHASSIS 412.- 19Z00 ITEM PART DR NDM£NCLATUIt£ I'OWlt-oNl Ib 4PL. 1+ BPl. R~~ IDENTIFYING NO_ DR O[SCftWTIDN STD· "'N PARTS LIST CONTRACT NO, TOLIU,HCI .XX' .030 C... M.... lllO,C ... lIF. 93010 xxx a.OIO ."r-c (105)4.4 -"06 APPROVALS DATE I TL. A A DRAWN I'" N 1~I'5i!O MATERIAL ~HECItED I!f'h) It -~ ASSEMBLY ENG APP i(, _Ul't...lo -z:iAJ rjI SHOULD READ: BEND C4 TOWARD Q6 AT APPROVED ~ LEAST 700 BEFORE INSTALLING C2. FINISH ~------~------~ NOTES: UNLESS OTHERWISE SPECIFIED CP411 NEXT A$$Y USED ON APPlICATION DO NOT SCALE DRAWING t ASSEMBLY DWG, CP411 POWER SUPPLY 8 I 7 I 6 I 5 4 I 3 I 2 I 1 REVISIONS TINa ....,. and specificatIona. herein, eN tIM prop etty of POWER-ONE INC. end lhall not btl ~ KQ tTl! D£5C1!!~ «copied« LINd in whole or in pert _the bee,ia_ -Z7-rJl t: the rnenufacture or .... of rt.rn. withoutwritlen per. .4 RELEA~fD FDi( PRDDUCT/O/J 1 .~ ~ m..... r"9.~~s2."!:;.~B--+/c:.::IJ'---'-(-='":cl!"--'O==------__~______-- ~~Jfr t· ~. !:l2QS C. INC. EC'.O 7·gBI ~ D D RI Q I ~~CRI > ~ __4~~I-*~R_2 ______-r~ 9 ~-----r-----=-----"T------.------R3 f---L_-_I ____+---_IC'00 __/_2--S ______r_~ n_o ;:;~A~::.-'T-O-"---A-LL~\M---E-LE~C-;-----l---: _~' C'~' _-_,_,,'_F-_4'1 TI I----'------I------+------r------+------C3,ll ID/2SV ~ 1 • ------: • ------.--,,_,,'4 8 .~ I ~R4 CS C\ 2('J/ C Q3 < R5 e.G. 10 1/S0V . C7 QOOCV 15V 102. - i009"'J ~------~~---+------~~~~ ~-~~--~----~--*-~~~----~------~~ +5 V C4 ,('\0:::3/ IJCl V MVLAR 1;]4 - 12':::::<·:' _ - t5 I liMIT CB .-='/!c~OV \R6 ~.3 Cl. 0<'lC'OO/15V CN'ACITOR. ALJM E.LECT :1:" - '\'lC--' I, 1------1------+------+------2bf>R7 10 .. C3 11 ~------l2 1------j UI CR.5,1D 1 INS4QI 1 3A I)()V 'Ii - :02S2 :~: R9 CR::;}7 IN7 ~2. A ~ -ZENER '1C'Q,,,A ~ (., V 1 12 - 1000" C.R2 711 DIDDE 301'1 IDaV 140 - '02'53 .j. C2 c 6 5 7 I---~-R-q---~--M-~-?-~O---+--D-ID-D-E----~-~----~-D-V--+---I-I\---IO-l-~~-~ C RII 2N10£5 TR"'~SIOR NPN" POVYER '7 ' - I02.4~ I'bW£R TRAN':> 171 - 102(" I 2Nc'107 PNP 51C:= 172 - I024~ ~~~---... Q.5 TRANSISTOR NPN SIc=, 172 - 102.4, ~ ~~ __~--L---~--~------~---~--~------4~ COM SCR I 50315LS~ Sc..R 15A 30V 1 feO - 10'Z.£9 5U'c.. 5DYJ:!>LS-:' 5CR 3A 30V 11.00 102.55 j (~C- P, I ILl 4.71( " • R22 I--______I-- ______~---~~-----L---~----~--~---L------R 2<1 • 5 ..r~ I 1'\0515' OR '/2 W s: % C F RIS,2B 2.2.K ! PESI5:0R '/2.W 2% MF 1 152. - 105 ' :' R.2.~ .12Jl. RESiSTOR 2W WW B HW 15~ - 10::'77 -- R7,14,25,2.7 2 K ~ :t./O% POTEIJTIOME'TfR OZW CF -,3 V PCB (A I) PRINTED CIRCUIT ElOAR. 0 505 - 191H i PART OR I'OWD-ONf IDENTIFYING NO. ! STD. PIN PARTS LIST CONTRACT NO. TOLIIANCE XX. _030 xxx •. 010 APPIIO'IAlS Dli\n 1'1 TL I A A DltAW'!Je~ Yllv.,kr 11-11 -80 ~L"!~\\~-;-iL CHECUb j( ~ /1_/1," (2. OUTPUT) ENG APP1::::.. .~ IZ-/~-60 APPROVED I. THIS roARD IS TESTED ON FAULTfINDER DO NOT C.,I,,\P\NGE PCB. '+JITHOUl' CDN5ULTING TEST ENGINEERING_ ~ 1;~N~;\DAAM~ NO, Igl'iB 1 D NOTES: UNLESS OTHERWISE SPECIFIED QTY STD_'~ DUCllflTlON USED ON NEXT AllY USED ON .IS1 APPliCATION DO NOT SCALE DRAWING ICM.£ I ISHl£T I Of I ,.. lIIHOP CllW'H1CS/ACCU",E$S .., MOII!D£R NO.A-fi494 , SCHEMATIC DWG, CP411 POWER SUPPLY (1 OF 2) 8 I 7 I 6 I 5 4 I 3 I 2 I 1 'l11li_- __ ...... _ REVISIONS ...... ,f!II~IIIIC _or_",...... ___ _ .. ..."...... · leo l Til DESCIIII'TlOH 1 DATI AP'I'IIOWD ."""" ...... "' ...... -t ..... ---- ~X1 F !Al1lkJ' f'''.vUuc.rION 11',;1. """ ;. --=- , .. r - ~. f? -,fl.,., c(p 1s2.~ (! INC,. [(.0 F-=~-+--'-"--"::-=--'----.-. - .... -_.. - -. --- 529~;J INLECD QI J, 10---.---+_+__------.-. - . o +12V \... !53'J5 £ INC. £CO C3>,'=> I()O/~S\) CAPKITOR MF EHCT 101- 10110 r-::-=-'---...... ,----=__ ~--_+---_,------.... -" - .-. >---- .------.. - (7 ~7/50V ~F 01 - 10112.. 3 t---=c-=,2..,------If---;-I{)7'O:;c-O~)/--,-3'"5~V----+---II---_-._-~_--_-_-_-_M=F===·-~-----i-·--!-OI-::-2-0-B~'2 - CID I/SOY MF 101 - 10111 Ul 4f-----. ? G[QJ t--_L~I,_4 ___~-2-C-O-O-I-3-5-Y-___+---'-f__------M--F--~f__--- .. ---. ___IO_Z_-_I_O_I_O_O_~ <>R8 CB,"! 3700/100V MF 102. - 1010l. I t---C-2,'-5---~-.O·-,-/IDaV----·- ~ PF -+--- -.- T <' IC1~ - 100'15 L------+---~12 I---~----+------c----_+----.L-cc------,--..-L .. ------_ .._----- ell SOOPF/IOOV CAP~CITOR PF ELECT 105 - IDreq ------..- ----.~------~ - I---_(R_I'-,~__ ~f__-IN-~-O-'---+__--D~IO~O-E----'-O-O-V--~-~--_4- __tt_l_- __IO_L5 ___ ~_~~ COM CR3,4,S,Co,7 I N400~ zoov IA III - ,0251 B,II.'~ CR"I,IO ~ov faA I" - 2.0014 (RI'2. IN'll;::' OIOOE :'~V ZENER 0.2. 2Nf'01 TP.ANSISTOR CRI2 RII I~ R'2. ~60il. RESISTOR 1/2W 5"/" CF' 151 - 10;,54 vVA" R21 1.10 K IO~lO L..... vvv~If 1'14 3~.ll.. I015~ ,'> R5 4.lK IO~81 Q3 '~R13 -c RIi,I2. 7.SK IO'!:.5M.. R 14,2:' 2.21\ I(p"T~ ~~-R-'~------~~-5-.I~K------+_----~------+_----~--_+--~----+_---IO-~-S-2--~ ~ ~>~ R24 ill1 ".BiL ~ 1031;' ~ Q4 ~R14 "'CRII I V"Y"V 1 1'118 36K RES,ISTOR 1/2VV 5 % CF lSI - 10'102 >- • ...lr- RI9 B ~ AAA +24V R 13 '~OSl.. RE.5\Sm~ 'll.W '!>~ c'.F I~I - 103("2. B ~~~----~---.----.---~ ~----~--~~~~------4------+------~~~YV~vv~~.~------'---~-----+-~--~ >- +24 :~>3 rncr--+--_ _+-~--~30___-~_-_+-+---+__" Rio 2.711. RE515>10R I/ZW 2% MF 1')2- 10515 ~~I------, lLIM ? CIO '- < Rl6 I I V~~~~JCW<- RB 2.1 4.lK RfSIS TOR 1/2W '2% MF 152- 1(')52..1 I-- R~e. 2:'IK R£SI~TOR. 1/2W 2 % MF ISl. - 10514 2 ~5 ~ $' ....-L--..L..----L.----'3"--, 2 ~ R20 11 12 ~ I RI7 1 ¢ 10 13r----,CII ~I .- ~------___Ir------_+------~f__------AVA~;' 2 U 3 I ~1 > ...,$R9 ...,SRIO+ C8 + C9 ? $R21 RI .SIon.. RESISTOR 2W W W !3WH ISB - laClB'2. .4~ ~~ ::: :~ SRI8 5 6 7 41----<1---... ~-P.-'q~,2-4-----~~-.2-~~n..~----_+----R~ES~IS~T-D~R-----L=VV~~W~W~~B~W_~~ ______1_5_B_- __I_OO_7_9 __ ~ r-=--:-=--::-::------Ir---::-.-----:;---t--,------:-::-::---=----,------~--~.------... - L-r--U---.------r--'I ?;>R22 R7,I5,2D 2K) ~/OX POTENTlQN\ETER. O.2W C..F. 1'>4 - 2002.0 - ~-~~--~~--~--~---+------~~-~------~~--~.------L------~~------.------r_--_r-----.< ~------~r------+------~~------ PC B. :>RINTE Cl CIRCUIT BCARD 505 - 19146 PART OR NOMENCLATlJItE 1'OW1t-0Nf REF DES IDENnFYING 1'10. OR DESCIIIPTION STD. PIN PARTS LIST CONTRACT NO. TOLU ... NCI .XX' .030 C... M .... ILLO.C ... L1f. 93010 XXX •. 010 ·~NC 4. THIS BOARD \S1'ESTED ON fAULTFINDE.R 00 NOT c..HAN6E. Pc..B. \JITHOUT CDNSULiIN(, 'TEST EN6ltJEERING. A A 5J R16 MAY NEED TO BE TRIMMED TO MEET 5CHEMATIC SHORT CIRCUI T SPEC'S. ~l OUT PUT) mR T V C I , C + TOGETHER AND HOTS TUFF . TYWRAPS. []] SL££Vf PLUS SIDE OF C / . NOTES: UNLESS OTHERWISE SPECIFIED SHUT I Of I ~. SCHEMATIC DWG, CP411 POWER SUPPLY (2 OF 2) II' ...---__8__ .·· _"~,_. -.-._;,..-_-·_, __ ---'"1_·· ___6_",_' J_' -_··_-· ....·-1 ___ ~~_5------....'l-·· _' ·_-_4 __ '_-' __ 1_-·· '_- -_. _. _--_·3_-_··-=-_-'"1"---".-__.~. ___. 2 ..... ~=-·r i ...... ~_' .:-. ~"~_.~ _~- _,l''_" l_····_·~" ...... ·--..,...... :~~,-~' . ... [ . , JIf'MI(I". .... " L IInCIiIPToi I ...,. l~ ...... - LZCINII Ml I I I ! .. l .. <" '.~ '-. f' .' ,,' ." j o D·. ·1 >- " . 3~7~n5 -I -CAP H9U5/~ ;- .,- ... ~5r~~------~ At-.P : ,VIP ~~O.s~~ J. s,oo:..CT PIA) ~n---._-t-i (S rS~~~------~ >- . ; .. .. . tA/2.50 V -11 IJ 5 VAt. 1 . ~ -ST~r'----~------~ ;. ",(1. ~O At" 2.30 ".AI!. ~ >---1.....D--+--1 1'1 ,A·55r r-----., > ,~~p~------~ '- f I SWI 'I ~ -1 "0--'-00----t~---_, '"" 0-,- I...... I r~"'(_.J---+--+-f- ..,.~ AC INPUf 1- ! .... I I ~ Jfj!2~ vAC. ~ II I ~ 17-(, 3HZ. I ,~' .~ -:;. I I ,I L _____ J j c :tx I 11 ) ~----:) ] Go ~.- .-.. ------.~------'-1U- I.... _____=~..:..IA.J.:::._. -,I,,-~-A---L--o -5 "'.!1 LlD-~------. ! . -, '--- lIS : . I I 8 '----f '{l0 rl2 L~~------, i I ~""""('_Jo----""" "TI/ IOzS3 ~ [p:~------, t .-O'-C__)------i 'rJ2r -tl. pl------~ __ CI:t __/~_CS_:!' __ . __ +-_-( 1/ 8 B IS--.O '"'------1'05 • ..,-, A).(... - -II II /flA1ES WITH: AI'1P ~SO 7 ~ S - , PL t)6 HOU.5 I NG A/fJJ 3~02./8-J PIN I'AltT 01 I 1,3~1 = I UN TlfYIHC 100 1 I PAATS LIST A : 1 "'1 ~------~----~~ I - t ___ _ ICA&.f _~ l !WIt - tJIF l. ._ 1 I • 4 SCHEMATIC OWC, CP129 POWER SUPPLY (1 OF 3) .J 1zc.IL'nI1 ~ T 11m ;l~ ~ I~~II----~~~----~I~'~'~~'~~~'i J.; ~.: I .... ~: 1 .AA" ~ VVV ri ,1 .' I! .AAA...... i ;~ - r-f ~~ rIo I ~ ...... ~ '" c ~...-- 10 ~~ ~ 10 1 ~ r-.~ ~ ... '"~ c,. >1£'" d lOW!'" r-- t;! N d .,J~ >~- -~ ~>~ ...: > • r: ~ :l, ~~ II ~H r- r-t ..... ~ ..,~, rt .., Q ... ~ " I .... 8 ...,. -j . - PAIlT 011 NOM(NCUruM "'~~ IOt:NnrrlftG • 011 DltcJl,l""flQtI <.... '" ( ) ~ l.i~1 1 I I } ... = PMTS LIST ~ j~;: ~j~ ~ ~ \JNlCSS 01'1*1IWI5l ~C'fl(l) fCOtotJW:T NO_ DIMl"~ All( '" ,fOCtCS .,.... rCl.f~(s"'" I~ ... I FIUCT1QNS DlClMAo-i ~ I~ ~ ..... ____ -Jo u • ;t. ~ALS C»Tt .. ?ll 11 " .... llJ tl? 1Il~ : UI 0 A - iDltAWil Q. 1: ...Alf'::! ,O·1:·i1I I :S.,.. ... 1MT'(1fto\l P-CIIBI" i~ A..L. "'" .c.,~ ASSY. 10314 SCHEMATIC \ SCII Icoer ~r IC- r~ 110- '. '. r D l0317 : ~..aw==" 0-, I A'~'_.i: 'L. ·~._~.r~ .~~ .I I ' SCHEMATIC DWG, CP129 POWER SUPPLY (2 OF 3) p_ =v: • _:::-: •...... ,"T ..... ~~ . --.r-- - ...... rt -----u . - ~ " loe. •· i 'VV~ ..,. ~ 1"T' c. 5 ~8 IOL: 00 +cc <¥f'so ~_...... AEIC. .;21 .;~tf V. "'1)5- ~~A , U I. 5.c :14.1 Ie. L ~1 vi '. nI2:JR5i.lk i-r ;;.T 1'.2 ''%, 7"Z3~ TG7 10 ., r-- 1'3 ~ I 33C/~: '4 I I. J'(' L....--....4 .-J2 I b 750 5" 7 ;tt IT f~'''S1 ~~ I [ f' ~ CCM 5? M 112. .:lZ~'l- z- T 1 llN~Q5!L ,.... J vv ."..12. . h I .25A I~ ?S I~ ~+/2 -'~1I. ~II S I Ie ~~ ~ >270 T.~~'- 7-' 1/2 ~ R.B 4 ~~ j~ -r=* C9 r- c..c. r "?23C. MO/.z.s CJl .22(X)/3S' n ? RIO ::c ~ otl4 S J.I.t' m ~IO ~. . if. 7 J:.. S 7 ~ •.,1=, -. i . 1 ~ f,." ~ m I i I-1%0' ' I 1 I 1 j7J~ n ~~ I T i o U1 ~.:::- - #. -I ,t 'T, -(41?" p~.,. AIn. #AI.;atw S"'4- ~ - -f- ..L Gog Tc", 117 •. .. ~ V..!J 't, .. "T".,%~ dD~ n ~5 "CO • ...r7~ • __ . - .! ~LII ~ ?'z3c:t. ..,.. L'JO.I ~ ;?~~ :"1 - ;.' - ·t~ /~5 N :,/~?- ' eRtI-· - .- \0 .. - ... :- .i- ... :-' ...... -,..~ ~ rtIP-...... - ..... _ ...a. ~ '"~':>:-,~ ·:t _. _4 ' "",. - - ~ ..-. ~»"»;~' - '~ '~-.- :-'~ ~ -~ ~ - ~ J: • -,~ ..a-r''~.~:"'- ~, \2.N30S"'- 'VV'Ir _ ,_~ ~ .:;;..,.: --. ~ CJl ~":li;~~;~ ',: -' • C .. ,~ ...... Q._~ ~ ....>.../. . .:.. - ~ » i i Ii _ i :~. ,.: \:.-~ , ~ ~ ~-.. ..~.::.: !'•• -,-. - _ .• ~ -~ o..,., ~ - -. w N ~-: ill n .. Q.";,..-~ --- .-~- - !; 98 8 7 6 5 4 3 2 I. DIODES ARE IN414e. "" CN>S ARE:. IN ~ IN...E~S omE:RW'~ 5FEOFIEQ. 5. E:ACH ECL IC BY~~DW1TJ4 A .Ol~f • 4. CHOKES(.m) AR£ F"CRRO')(C~ VK200 IO'3~. -~~~------~--~----~--~ '\. ~£T I ~AS 5£PARAT£ 6NO A .... D -5V PlANe WITH <>NDS ~T IW F"RON\ EDGE CONNECTOR. 2. UOT ~D I. ALL R£~STOR":> 1f4 W. u.... L£5S f\lOTCD. ~OTC:5 : A A ------.,-.....-..-=-s D' ---.III' ~IOOO2 7 6 5 4 3 2 SCHEMATIC OWG, ASM 310001 (1 OF 4) 8 7 6 5 4 3 2 1 310002. .~ fin +IAV----~~---.~------~~------, D D L4 +!:oV 1" ';...:,..... ______5_1 - FAUCT 412 V ------""""'~----_., 0 rt./w. Cle r.001 +IZV 12. ~AI.AP'.!>AFf:.. II o PQ£AMP. 4VN Q" C3 1 C c 2.N221~ 7 .1 ~T!loINI(. "+ 14 W&rr.. s&.L. o ~~--~~--~VV----~~~~~------~~-o~C.ORIVC o ~ ~ ______9-O~TC.~ B B - Rlw. ~;AI!Ii.£J~~~------If------t-----9 -CAR.~O~~------T-' -CAR.I~~b~~~ ______-t~ - CAR. 250,-o-'=>tl=------t-'-i l;n~ LOOK 1% ,--+--.;..:11,+ ~, 13 ...... - __----5V R80 10 ~~. 1.001<. I 111".1 i+5N 4"10 2. +,·t& '1 ~'~3-4 ____-4~ ______~_'°-o~D.~L ~ A ?fl4 A U-.,7V ~HAQ 0a:4~~~ ______~ ~1~2~~------~' ~O.5EL I _ .. eo.-.- TH.-.z , ..... _ ------..D· ----.l1li. 7 6 5 4 3 2 SCHEMATIC OWG, ASM 310001 (2 OF 4) 8 I 7 I 6 I 5 4 I 3 I 2 !SHEET :3 l~ ~ .I'o ; +5\1 C..iS -5 ~ :5\1 .. Ear. IZI~'" 5 4'2.9-8(: 1~2 ( IJo:.. n· ? JTP4 '510 V 5·/1,.0 14O!lJf: o ~~ u~4~ ______~ , u 3 D .t CIO"1 I .1 ~---VA~--+--r------+"V RI~ • .- ,~ IZI-3I5 .0' I I/<:, < t------' -1"1" - II '2F r---~------~~2~ +~ /~---+------~------;---, -12 V -.J\I""' .....------t----4--1 ~ CZ~ -511 C2,e.-=- "'~d =t .0 --It. ~ 4 FaM~l ? II I~ -Sv c ~11- c - r------1\,IQ. 610 +5011 >~'!> .oJr'S" I~~ rlo _w--- et5I ~ rl I" .. -ftA.D . .a.TE C~? 1 1Z1-;:.7 .ccn, T' -'31/--+---' ,II::. 5~. h. 14.., L__ ~~'5 ~r--~I~I~___~'4-+--~r------~-4------'~3~ +~~~ II ~D"r 6rlrt .. B B - I;; ). £143 > !SAo ~------~r------4----~-~~~-~.~D . ~ ~ ...... ---PUR~ 1 I ,rz6 ,rzq l. ..,."...... , I ~~~a~-~r----__------~------1~5~ ~ ., I~ et..T" 1 ~2'41 ~ 1Zn'Z. 510 ~~n. - 1 7~ ~:3 Co!1O Co!" 1& - ~ r-: ~II ~L I :r.;~~~~----r--~--~----~:c '-- I~ 10 zll I*?ol IO!~I ...... f!.,Io:. ~ ~~;_-.-..., ....__ ,..;.7 ...... '0':; ~ - "" --!.- ~ > ~ ., 3100 110:... .. IOI~I > 1,.& IOJI" " (p ~ __-oJ ~ 1.....-__..... ______-~V I~ To $t4T '2 ,- L------veno~~-r~------~------~-~I~------~------~-4--~V ~I A A 5'0 >5~r------______~ -511 t-.....-----I I -;;;zr L- .. ~ .... ~~ 1- SO-4EM~TIC. ~DI werre PcB ------.~ ------...... -- ..,... --_...... :I&.1;t·8.. ? I 7 I 6 1 5 4 I 3 I SCHEMATIC DWG, ASM 310001 (3 OF 4) 8 I 7 1 6 I 5 ~ 4 1 ~ l 2 j 1 ~'0:::l0L. 0... (C Ito 0- IC ... b. 12-Jl-'~ O'2,q ~ !·H"-~ os'!> --P '2.·n .." 05<4 IJ J '\ --=:L ~ L-ZC.-'" 03" "',j L j. ~ • ~-.,-" Ob~M"" IoJ u-.':1t lOriS- 5 4-29~ \ 32. SI-IEET 4 y ~ 5-1b-8() lA:U , ~ D D (PU&O~ c~ .~) LS I" ~ET Ifl LI ~I/TZ + 12 V -H2V 1 c::.,S 1- 01 r;fIt/1..o 51. - +5V +9\1 t--- 1,.". '."C:",'''',''-I ,~~/CT31 ~f>3 ,C,.,/C48 I'~ L, !H4ET Ih L3 47/48 ~ I -!>V PL. "I'JE. -1 c.47., c... ,~,C.s.o-C;2, C.'54-cS""7.c:::t.-o C C C-'~, CT1-Ce.o, C,4- I c,-'2. ,C4.4-CC-'. C,¥43 ,<'44, <.., _ .c:.1 .1 l.,e) 'AH££T 1 ¢ 2- L1 I ~~ -=- -1'2.V 1 -1"2" ae ~ c.~~ _ ~40 _ ,.1 c::'Z. : .1 cl -r.1 - .1 -,- .1 .1 :;: .1 -. ~ r il .~".G-ro.C~1 ~TP4 I ,. ~ ... ~ - - A A /~~"TE_T~_WlriIORffS ~Tf[ -.. I~ 1--"-8.. _ ..... 1 1------SC~EMATI~l ~ WElTe A:..S ----.D------.IID - ..- liiO~-z. .:=~g. I 7 I 6 I 5 , 4 I 3 2 I 1 5WEET4 SCHEMATIC DWG, ASM 310001 (4 OF 4) £01 o o REDUCE TO I.OOO! .OOS B C mw CRI..D ~ c...I F G rdb ~ r;]:!l FA [j@ rnw ~ClIO ~ .. ! fffii3 .. Iml 0 rh ~*I rn2J ~ Ii (l EJ EB ;;;LF--O cm:J i I I ~ '" El" r ... ~ I II "..,o-~ Gli u Q -~ ffim ® 011 J : ! • @~ l51Q~ H CillJ [ill] [ill] @!)[ill]-rn!J~ ~ rn!J 11132 I EJ \.J 12-78 LEGEND IEAD/WIITE 310001 c 8 7 6 5 4 3 2 1 D... EC .., 0- EC ... 0 5-15-80 * 0, .11V ric; /II;. .,. 0.1 B ~~ 5Ht:E. T 310102- R7~ -:- 2.00 D 'N~~1"+ D lit. ,-_2 V 2.00 C2 0.1 CI 0.1 .01 czo -:- (:". 0.1 ~16 I , o TP 1 ~z. "S Z40 2'tO R~J2.K (220.. -robT? R30 w~.~ : 21<" -:- ! -I,V AGC{T!5T ONLY)6 Po41 <;10 "J3 OX ---- 11'0. I ~ R32 sao RS4 'V\ R3q -=- <;/0 C C I~O R."1 l 90 "'~5 0'( 4 Z"loJ"L IIMl ~ I:lS 1.5K 5 I.~I\ "5<.0 RPI2 I.,. .>,ilC 510 -5 I:IPI2 -IZV LO SIG Q<; II O£T .,.p 200 Eo TP 510 CoSI T"P R2..Z- oOI Co 14- ,101. LII. -It. .001 -.:t' 10",(, r a RZ,-.. = ~T~ rl l -~ 4'1\ .. RIO ~ RZ6 &00 -5V -=ell) QlllTA 1 -:- -:- l'K (54U."T ~) '" -5'11 _12V ~Ql.T"'1 B (~"T'\ • RI I B CRI III. wtUTI. DIU'ooI£ c: (~"T 2) +12\1 "llnz. .I'!V ~ 1.2 eEl€> I·ol .-'!.V ~ -5\1 4"7146 -I"Z.V s.~ 1,2 -12.'11 CIS CII. a, CIS C"30 CoN£) suss 0.1 0.1 0.1 0_1 0.1 11I'>-----_--- .....-- .....-- ..... --~---""\Q}T.P- 5 NOTE.S: 1_ ALL 1EI10.n. RE.'5I~"Tt)RCS AR~ CTS ':lIP RE.!)\~ITOR, t..IETW~~ ,Ci~ P/t-J 750 - 1.1 - R51OSl. . ~. 2. ALL DIODE.':. 1t-J4148 3 LAST USED REf. DE.SIG RIC'3, UI ,CIOB ,U~:l SHEET I OF 3 A OIL. RPI5 ,U36 A 4. ALL CM'S I~ """t'll UN l£S~ OTl1ER.IIJI~f' LABELED. 5. ~Oi U!oEO,Q" R61/,1 ,LI-'7, C~,52,99,IOO, CR4, CRIS,eRI4-. -.-{~o ~ ":>CHE.MAilC., R£AoO WJt.ITE. p~ ~~OEO) -- 31010, ~ ==:;,----=-- _1IOI1.I:1a 8 7 6 5 4 3 2 1 SCHEMATIC DWG, ASM 310101 (1 OF 3) 8 7 6 !S 4 3 ----.,------._ ... --..011... _-,,-- ___ 10 __ 5HcET 2. OF .3 + IZ V -----:----- = -IZV ~-~~~~--~-H +12V------.--~-__, ~~~------t_------~======~==~~~,------_::::::::::::::::::::::;~~;_------~IIT +5V PR~~-4V R68 ~"70 1 ~' 680pf -4\10C 68 ZK = R~8 +5~------~5--~--~------t------t------~--~C36 51 O I' \ L------~I'-R~.~~T = L-______--_- ______(~k~IO_-_A_._UN_5AF __ E__ ) _____ --< 12~.5ASE ~--~-_.-_+---_+~~~~~~~~------~(W_._~_~_V_) ______~~~--714 ~ITSSEL R46 R'Z c 1.3K 150 c ~~--+-~~-----e------~-..-5v +5V +511 ~--'----1 L----~~~--~~--~rv\r-._~-'2V 620 C~"7 1't5~ ! ~ ..... RI06, 1I(, 01 ------"'"'_i...... I· I~o ~~~~~~-----~~~------C ~~~~ ~~T I) R50 .1 \.51( ..._---<~~.y ..... oIt) rl = -~IT£ GATE~F~ ______~~---- __~~ r------~~ ~'TE.MA (S4EET ~) 55 -R/W~SASLE~~------~f602K--~t_~~~AA~+-----~ B C60 B .1 I r------_.--. -5\,/ ~q 45 SIO R62, II<. ROS 240 46 L------~IO-WO.SEL~ ~------~--~~------~------~l-HO.5EL I L...______-?~ -CWlP eWASLE I L-___--~~ ~~--~~~------~----~------~------~50-~PI~A8LE~ cc;a I'O' A Rll L...---...... +6'i A ,eo ~------~-----4~------..... --~-s~ "SCHEMATIC, READ! WRITE PCB (2 SIDED) D 310102 o cw 3 1tCV. 7 6 5 4 3 SCHEMATIC OWG, ASM 310101 (2 OF 3) B 7 6 4 3 2 _ ... ~OO' ___ .... _ _11 :Y:'__ ... _..-,,-- OO' ___ I 310102 --_ D 3 -/2-8/ ZlZ r - - - rlJ£~e~gr~~~~2:'~ff'0eJ:) wI-IE,v (.IS' - -- 51 TP r--+----+------t~~---~------4_-~··~---~-y~~~~~ NoS. r--+----+------i~ __ f---r------~310'OI I L±.r- T S ...~!5 -5V T~_. z ~/f/~ I I il3 ~~ ~)C)-IIz...... ___ ~--e- l~.t---+-______--, IGU5' [ 2 KPI5 .J.LJ10IlN. / ~ I I ~ y y -S V UI .., . ~ Ul 1+ • 41ZV 1 ~ lit RPIS If 10101 )O-l~If--+------"" 2NaD711 o Q8 o :k= U3 ~7J1J,~¥ Jv ~}O"".!L/~_I--+ __-5_V ~---+.:...--~--,7 I ':1Il$IJ~I3S I 1 ~~' ...... __...... II -IZV C5~ -$V -- KH Rg? tJl4 1~9-JS! /C87 17 r- Sid -no flPl" 7 10107 ID II<. "" ~ -5"V- ~_'!..- fJ ':,... T c ~9 R9B CS7 LII TP 510 UI2 ~ ~t""J5...... ID'_i'"Di"'flL-J Ri9 f.JK IK > PltlSW , IDW l U,Z UI3 r------+--~~.. -Sy ~~ '------=-iC • r-- lOCI 10131 SID -llV c 14 ~~ -lL, TP 1IL.J'Lz. c UII ...,---- ..... (slEEr I) E ~>----.s-/6---_--_-----...... II"r.o:fiJiS\ 1 1 To jTJ llSC lIt&Sls RPf ~~ I.., ~ l .,J ~~.r-- n"It. r-~D 1-- &16 ~ U9 L W,.s t------&.I" ~ .,a - SF C'lK .. 13 t~ L-.. I L IIM.JI "T "!:-...,,',. ~ -sv r------=+8=IF~~~~K~------~~~ ~r- -S"I ...... e...p- - SJlJ II. Ie IU CUe. JJl '--- 4 . I US -.5 V __;- __ ~---7~;_;~Z~~-- ~ ~ '---~9F_=CL~K ~~1-~ I ______RPI. .Pi ~~/D~'Z~4~.U...~---.------~w~ +8F CtI, U13 Silt - ~ Uis J 4_ 2 : 51D .ar ,/\ ~ I''''' " IMIJl WI .. .-J r- r!!:!- D .. f.l WP1 .5 ~1fol P-i"------..J r " 1,.,. ~l 1~3~~~~----~ -SV"'-4-' I I. fC." -sv 1t r: i! c.3 .., '''' lI9 fCPS 01 sm~r~ ______~------~--+-r_------~ 4 -IZ" .3 UII. IJ..,Ll._JV'It.fIv---t 1 , I /I id3 L,.JI~...... -sv 1 I c RPI4: c~l. I Lllmw-51 16 az ~~ ~ 510 : ~ S/O I z.z,l1...-·19__ __-4 I______.... ~ 1MI.D ~+------~--~ C4B TP I c I .J- ., .~ ·Ofll RIOO RDOS ID - q --:...... l:...- __... I '---,A~ ~ '"- ~ ...-______..----'uO&..l "'/""J A +5V ---=-D L.:iL .. ~ ....s.... 9 -SYS CLie. B ). ?5 B flKJ111< ~4 15~14 8~~K.,..3 .JL~~~~Q' 14 , Jfk .3 11 ~/'Is..H. +5V 9IJJl U/9 - ~~-t--+--"'-i/( Q II ...... -+----. ~ 10 7 ItJll4 I --ri3 - S 5 - fD 6ATr ~ ~.:.:- -- r.- -, :-t 4 K.PB ~- RP7 TP J---+-+=''.&..fl n-o- I KP7 I ICIB: 51lJ >' >SID '--______'J...... J ~ ~I~ ~ SIO -5V"'+---' -5V - SY.5 eLK -Well< .,. SYS ClK DC EIlME .. W ClK ::- 41 - TF.5T fJNl y- ..... "'WRAP E 4 4S ,. AKtJUNf) tU:' ~JItJI14 Z ~~1119 ...... WI DATA ",tJ,Z4) SO ,. - TP WI( £.ATC r-______~~-~w.~~~&~ALT4~F-- ~~M[ETZ) ~/SUl9 j4 /NIt1 .. v : 9 A .... -wr 6ITC " IIJIl4 A 54 ,. ~'" 510 I L. '~':.... __ -.J ~ 5-10 ":2 !- NON£" L _____ .J - '-~ __---- __~~D/~'T£ -5V• -....~% - "'__ ~."'IU" 8 7 6 5 4 3 2 SCHEMATIC DWG, ASM 310101 (3 OF 3) 1.;01 B C GHOO D E 0 F ONS O.S. ...!.lO SW (3£J G ORO GT IItptO H [illJ ot • r.:Tl U2 U4 us U6 U7 UI RP4 15 ~n U O~!@D 0 ~ ~Uu3M 9 I ffi .I.QQ.J ( C101 I~ H m!J H 1'~:!711 I~C46 Y ~ 11.~71le [!![] x on &4 SS ~ 173C'J o vco/vi] H(g!J R91 ~ CS9 J 1ft2 IItPS difPR99 U13 o un • Ul~ U1S U12 • ~ 2 @+rF\\~ =0 ~ READ/WRITE ~ ASM 811-01395- ~ REV it U!!J U ~O"YJ @!] C.. r::....:J lit PI 0.5. Ull U19 ORO U17 !;1 U20 U21 ...... - @D • • • IP61, rvl n rv1 0 dO ~ I ~33 I SIG 3 co '0 ~2 A. .-2 ~ ~."2 1M: • LQL] L£!£) 3 ~Oa. ~ 5 ~ DE U 0 U U cmJ ~ ~ rn!J c::::J 163 ~ ~ ~ RP7 CJ R66 U26~ t') U23 U24 ~ U2S • U22 • IPlln M o ~ ii rJ) 4 ~ 1-!¥.1."1 • < U r::::J MS OGND U I I ~ ~. ji; ~ ~t ~O 0 + o OO-OAT lit 31 ~ [:£!!J lit 74 ~ rn!:J@§:J ~ o- '-iJ •• - 1 rJ) IU~ rJ) < soQO~ ~r) 11 U27 C'I~a WIo GT ov • ~o~ U30 []!U • 9-\ IP9 U31 0· 6 ,,I m2J Q12 ~--...... o ~ ~ ;:;; Us :;fIOAGC I ::: I 6 '"~ I t;;2""\> C64 ,,) ~\.Q~ ) ~v +6VDC cb' ~63 @] [!![] )0 52 Rl09 + ~ U32 x0 .--. 109 • ~ +~ ~ U34 IP13 ~~14 g'iR\ g a -4VOC 7 @!]E1~EJ 0 7 OU33~ m!J all ~~~ [!l!J mIJ []ill " ~ ~ ~ ~ 20 0- oG 10 40 U'" 60 9JJ [!ill 2 J 8 7 6 5 4 3 2 1 S-' K +5'01 D 1Q;R r-----~--+_------~~e D : 1M. i ~.!116 I I~ ~------__~----I~-. , ~- 14 "ltv III I '"lK' l.K f ! CA l~.. r _• ..fO::4f IZtI; I 1.1+ '100 I.. ~ 11 IOf( "--+-:=I'-i . 1 > 2.1<.2'" J c c 5,1 K UR."K11 I RIC'.. kj. Q1 1Z24 l,CK IZZS I~ .. ltV i !lIDO Z.OK r------4-+------~------1 55 ~y~~ 4. ~------~------+-W------+S-V------7------~~~~~------~~------, cq c ~2.1M B -.-,." z ~.> B 101 -:P91 • 10 I" ,..".E.t) Cfq~ +sv SI._~ ~I ,01 V r~~======~~===+====~---~ r+------+---~-r!-1=1'~4 71 e .....-----+------i 51. +PLO CU(, lo...-______-{ ~~ - PlO ~ '1 A A /AI/,iiZ:;:-- ~~8~ ______+_------~ ~~------~I==~~~ L-______SU3 __ !+~5~V~ ______~,~O~~~SOOSOO) ------~ ~~~EX~rT~~~~~~~~~W~I'~2~'~,~--~--~-~--'~--~I------~------~~~ PC.B ~'TIC. ,~ g, ~ -.------."1· .. 310222 7 6 5 4 3 2 1 SCHEMATIC DWG, ASM 310221 (1 OF 3) 8 7 6 5 4 3 2 1 ..'Sv . ~~ II<. lO 4.2.0'"2"" - peS ~VO/CIFF CID Il~" D '-2(", i ..... I D Q20 Ill" ::-1 ~ .19~ 211t ~,. ~ -IVIl.E.F SI-li '------...... -""""'1 WIEA c -'~,. 1 III. Sam c R"rJ -b 'V +sv :~IK L ~ sm. 1..1MU.. ;>111.. I Inl 2.C ., RI~ ~~~ III L.SOO . T ·v S.flS -!- I I +fIaUT Itio1IDC&. Z4 J ~3 - ..1...,REF SIT ~ I +~VREF B B -OI~r ~ ... 32- I -OIFT 1 ~. -Ol~f: Z. ~ -01f:F4 ~6 -OfFf: ~ 3) - OIFF Ie.. 40 J C~ 12.0pt ~1~2. -OIFF ll. GD--- > lOKI'" C~ ~- ToOl -=- CIJRREtTIDNS 7/} Len L33 - 7D BE gCIHlJED A r------______~A __ -- I _ .. -----r_~-_Jl/-=-=;-I7"""7'.., ..... " 7 6 5 4 3 2 1 SCHEMATIC OWG, ASM 310221 (2 OF 3) u "L 1 b A +24Y B LJ .LJ If H tr/13/B1 2'3 .J 111~/.' ~JJ D L -t/lJkl ..1£.' ~ 0 II"" 1.7' , vt. I'" '" 4/~J/., )~~ o,,,_l u.aw~ UoW.1.... Itee 1l172. '> u(. :> III. ex. .01 CiI'~ UJUI~ ..., al6iZ. ~ lit "'to .01 '--- C"30 C1t.51 fll.e 1""....,35 1...... 53 ~l. 510 ~ ~ f ~c.LaItQIT 1 c:1l'2'2. <> Ilr74 c .> III. C Jr'.7 I 14 tw I.a loW I ~s :::S !o~ 4."71<."'''''5 L.1tooJ·~"Ta .. '-...... l? '5 .Z4>11n"'" ~ .0 .5V~~----_V~A~~~~~~------, ~~~~M5t~~------~------~ L...,·...,-." ~5e - sawo DlSMll.E »4'T t -I. .... " ItI!F" 0 ~"Tt rl I - '.0'1 I:&F rl M4"Tl .. 1.0\1 .., ~z +~.4\1 .., .Z4V ~"It 25 +~OS CR28 ~I<. 2Z -~.....,.OS ~ -PWfJ...~ B 1-' L~ B ~I Gl2.1 ZO +'1. " 1 2N2.2Z2.A ~ +It." r· ~~ ~-e.1.\1 S '{ "l'!l)J +5'1 .mI ,~ ~II( ~lYIU 1 !l-n1. ~.,•.. :::bC!O ~~ -a.1." 1tE~ ,. I "l. F----:IOI ~·1 ~' lOKI" ~ r I2nS· !lM'Tt flftIif:JF "7 + 3 _ -SIf .... n SHT I ·5"~ A,,",," -b IUI.8 ~-I ZK I" l\.JOTE~ : lL..t.LE.sr. O""Tl-£JI.WI~ ~,j:""IW) C"71 l.IOII .01 .,. . -~~ I. AU. 1itE.~1~~ ARE 05",1/" WA.ii ~ ~. AL.L 110 RE.'!II'!I"TOR~.a.It&. liB Wb..iT aiM -rzv~ - 1. ALL c:.A~.rT""~ N'.E IN "'\CJIO-~f(AQ 4.Al.K fll"'- ~ 1A II .• ) ~4.'1d" AItE ~ ~~ '6 787 I'lL +r .170.!l~.~ b) ALL ~LVER MICA~A.N. 2-5,. 4. AU.. DIOO&S ARE. 1t..l41~ Ot I[QIUV 10K ~'c.~ 27 +12~~~~V~V/~--~~------+------1 R20Z "-lOT uSED: I~ CSI RIOO CP.3\ RIDI Rlqe ~In 1..2 A .... A ~zz RGS A ~4V 1 y ... Q9 ~2e IK TP'I 16'1 7 6 5 4 3 2 SCHEMATIC DWG, ASM 310221 (3 OF 3) ______o w __ 5 4 3 2 -y------.___ 011 ___ .... _ L. 26/ "F~~ijII 6 4/11/., H I o I. MAXI, MUM~C.~...;.;;;PONE)JT;,,;;.;:~~-~---Ie:.,.&.~""'!T~~" ...... O.... T-....T~O-----t 0 E.Xc.E.E.D .4.0 ItlJc.H. o N'.ARK REv l.£VEL APPROXIMATE.LY .~ ~HOW~ '[II INSTAL.L I-tARD~RE ~~ "TO ~OLDERI",U~.(QI4. Q1S,aI6~QI/) 1c:.4j¢A41 ~ N RI6~. R16' A.AE TO 8E \"-l~T~LEO so THEY AlIRe [cjQJ IC3'-1 _._1 N o otiS, RIH Ao '-'A.KIN~ ~YSICAL CONTACT WITH C8-I. C8-1 M~T eE RllO RI"I4 0 "., ~LU~H eOA~D. I,""STALLED TO THE R"-'5 R.I"'~ I 1~41Re.5 RI"_ U !lIlA lJ mJ FILL WIT~ THERMA.L CEMENT, CONNI!CT't.a& ~I5, eel, QI', RoUSH IN\T1-4 cel LEA."'...... ~ NO VOID'S GR~~TER I~Z.. ~D.JACIE""T TO QIS ...... O Q.,. [ill] lese I O6IJD TPII ~ FAI~CIolU. .o D~vlC_ A5 SMOwr..J. OTWe~ \ICJ..I~~ c c LJ~~LJ [J OO"TP5: P~AJ.JTOM L..1J.J4!" [2] FACTOKY SELECT NOAI1. Y4i.UE I R~t'l U .:5I-!OWAI. I C'-O I ~Fl @ U JT£N DE.sc.~IPT 10"-1 IMI P/"-l (JTY LO CAT 10t-..I 7 108 Ie S~/4IC1j~ 0308~ 0 1E III IC. 11415C.PI 03094~ 0 I~.~E III I( MC.334 10 03oqqo 0 S~ 20 CAP, POL.Y•• OOI ...... ~, t. '5""" 031232 0 C17. CI8 1.3 CAP CERN. .OJ9J 10"4 S(J'I ().lOD'~ £) CB3 B B IOf. TJlAN~JSTOI! ZN'l9S 031243 0 QIS 17 /M TVlN.JJ.JTIJ~ ZN'JOO OJIZ4~ D QIS, 17 IO~ TKANSIS TZJIC. ZN6SDI 031Z.'fS 0 ·QIS 17 59 kES. I/~,SW~, SZfl. D3~7()Z 0 1<149 59 irES. V"," s~, 110J'l D~D105 1f1,,"9 01012.1 (ex) 010159 (&'!SX) ClJRRECTWlS TlJ£(f) 133- TON IiElliUElJ '5C~:"-lONE A A + <:"'61 1 '--__....J I ~ D 3102Z1 Of'" 2 1tCV. 8 7 6 5 4 3 2 ASSEMBLY DWG, ASM 310221 8 7 6 5 4 3 2 _ 1 a:,.. A B TE~~~..uT ~~------~l~.~IK~------=====-= ______ D LI ----~--4_------~~. .~y~ ~~ D ~ ."'" ~~1f; ~ UIoIIItJU. ~ ~ to ------II-~ I - ;.c; r Qo&l "'I u.I!IrIt.II---..,;..JV'I~.t\r_~---.. , ___A'\A.f\,- ...... ~ + I K .,.. '10 C1Z5_ • I2.K ; !.apt ~l -llV{ 15k'''' I,.01 '21 tiZ,V > 8Il; ...... , 11..-L~.. »'4.0U( . ~ 1121 'I +---- If. -It" > IZ~ R1(. ~ .1 2.0 '~~~t~I~'______~ : m • .conC~ RS'B c Ill( I"'" c -'" VyA +C.YL &WLI B B -=- 14 cze, ..sv .01 ~------4------~71 8 +S" I~ IM6 C2~ 2"8 r 2 .• "- .1 410 -=- ~------~~ 10 A 14 ,'- Vy I ~ ~, ~I q I 1 Z. ~ 4- P- 7C ~'t:) ! 7E. hCA044 ..tv I.&OO,-r 1Z!04 1 M(4OZA- ""I4U'I'U It ~IK @ I ~ "tIO' II G~ 1 -...05 c;2(. AK. .01 5 , 6 A -=- __ ------______,A -=- ~ -=- ...... J-" ..,.. '¥ (...)"'7 I ---- Pc.& ~"'IC. I ~ --..------, .....:IX, -- .~ 7 6 5 . 4 3 2 1 SCHEMATIC DWG, ASM 310176 (1 OF 3) 8 7 6 5 4 3 2 .... v f'A D c.~ o -::- RI04 4.¥lK I~ no. EIIO '''' 101( 1% ~l! 1 hIOToe.~ ....L LI______... ~lS II ~ OU~~K .IV-U: I~ ~lo4ll fiiO&I,.1OU .-oa. I L-______~ -PO!. ~~~ "'1.'1 2'24 C% "t Q::}I £qz. 4.81 ,~ .oe"t 5·/", 1411.1% 14K 1% ...... /\/1.,--- ...... -j f-----~ ~i~ -IV~ +IZV 2.121 4.""1( 11% cs.Hl I ~ FO!IITQ.l1MOIt. 1- - IA. IK. ern c C LN"!¥l1J '~"Il~ ., 7 +1..4"""F IZTJ -::- III.. tSI/ !U ~------~--~~------~1~@TP3 I +fiiIZIT ~ 2.4 ~------J .-1H------.-_. - ---.------~ ~3 - ..1.VMF !IHT ~ ~VMF B B -OIr:r ~4 -Din: I -D," 2. 110 '" -OIFF" .. -01" r. ~~------~~3 ~ ~ -DtFf II. i -OIFF~ A A ------~ OC&U -- --PL& ~HE.MA.II(. ,5ERVO 7 6 5 4 3 2 1 SCHEMATIC DWG, ASM 310176 (2 OF 3) 8 7 6 5 4 3 2 1 +24 V i I i I I ! D ~ RI~2 .I~ 11171 I..04i1.. D III. I~ 1"1., .AA '1n4- V v 411" r----.--~ C»i4 ~ RI~ c.~ (l1".l I 1M 12 . I ~~ u.w..,~ 111.1"i. 12156 I ( 11172 21"2 .~ I~ ~ 1Z ..5 III. I,,!~ ~ 10K .. .01 1Fi 'CZ2'? 1 ~~, ~"'4t ~-H~ I .l ''Xo IZI4l -:- I - .01 !IH"T 1 to r:-- 4 .14C;o 21~:!> 1 I ,~ GI~ ~ttO 8.oc.l( Z.t.. rZl.l-' bJU'" ~~ 11. """ G!lqO Po,,,,,, ~ 10K I'. '!> T II ''''' I I .1"" I ftlif> ~ QII 11( lit~ I .~1q; DI= t~l1A ... ~ ~~ . TP2 l"M( r ~ ~ - ~ +- - -- f- . 'V\I\, -- ~ ",&0. .111/ I I '---4 2W ~ .~iC.1f., q~ -=- I I I I IlIWO ( 1l17'? ~l. ..-- 510 IlIS7 '0 NC.~I 8 1 510 .. "144 +-I -~9~l.1I· tr: QIS '»17 v c2'22 > RI80 > 2.11.1% I I , i v.u..'"l. ~I(~c ! t~I.l( LII. 110 ., .. J~ Il!OII"~ £~,r: ...., .' 1t1j14 I III. III. c 'L . < c .1 -=- i a~ RI", I crO' , I:tw J lAtIN I - ~., I ~a., 41.4'11 n~ [I] ~ &.0 / I - [i]~~ I I L ______~ L.IN . ....-nt. A. ~56 @) I ~z. -1. .4'11 REF" II "!1M, Z. I I :n I -1.0'11 ~ (Y - --6 I ~"l CBI ~l~!"1 [I] +2.4" .. 1.0" MS: f ~ r 1-0114.1 I ~>2IA' .5" II IN5U' ~ 9.76 K 1"1. ~TZ +1..4'11 -.=- I~~+24V '.tll I'" IZn"7 ,... I ,4K ,,.. 10 ~"'- 1Z184 r~s Qtq 85J ~l~ )> tl~1 ,o~: ,6 f~ 4 01 -1.4 13 3.'5K ,150 ~ UJuu. ( ~:: ~ 7.I!oK 1"- .' _~v LMl3'1~ 1 ? // . ~~ 1. 3.~ • +1.4\1 Int.l ~ ~ > 1t1~2. IIV ,22,,> -=- -ltv ~4.UI(I"" -11" ~ 1-" L~ B B -.= C.&I to '''1. v ~ RI-Jo~ , 2..U.I% +1 Lv 1" ~ +sy A -=- . ~~ X-''!I)J < tlIV C~ 5".11C LM3~ 1 sn, 1"'& .l.eBO 121">4 14K1% .~Ol. ~ LJ~- I X,. : l.1C. I". 4 ]3>1-----r ·01 I ~ylIS i. 1l15S 10K'''' ~ !IH'T, -: n rz&:iior yyAV "7 + 3 _ _$V I "5"~ ~; IYo 1:1,,,,,, 1I1oS LM¥;/J -I ~ '''',41 f l\JOTE.':> : lL.toJL.£.<:.s, on£JI.WI~ ~ln£O) C:-72. I ~> .01 I. ALl R&~I~~.o.R& 5"" ,1/4 Wlt.ii ~ ~~ 2. ALL I". ~~I~IOR.«.:l ~ I/e ""... ··n ~r-4\., ~~ ~. ALL ~11'()1'.«.:l ~ I~ 1wI1CJIO-~1Ulo.O .1= >tl~ -121/ - >4.4l.k iQD-< ~~~ .. Rt"" ,'" -2.4 .. t 787 +5\1 .) ~4.''''''' ME. ~A.L.UM IO"Ib GD- '!!'t- '2170 LM~~-.e..I It) AU. ~'411t. MICA~~ ~5~ t .q.~ + V '''' 4-. AU. CICX)£~ ~ 1t.l414& 0IIt. lQ~ CEr > il~" 101( eo :> 10K ~ +l4\.J '"~ '*-lO l:#.S:) ARE tlEO ::!.,~ 2.7 A, P\~ "11 Aa.lO it.. .1C606 l~ -:!:- ~ w...... ,T It E.F-. c:e ""'. U'1 EO ~ 141 rOI rzjq7 3" -5\1 C6\ Cln7 _z.. L"'> ~ RI" RI,2. oW A A .1w .01 .A A A ..-24101 A.A" TP, 2~~ ,oll;.l ~ I I 1 ~K ~lRCJJrTR.'" : CCMf'OI.JEUT~ -- ~ PCB 5C.HEMA.TI'- , ~vo ---310lT1 7 6 5 4 3 2 SCHEMATIC OWG, ASM 310176 (3 OF 3) 4 3 2 ______8 w __ 7 6 -.y------__ -"CII'_--"._ ec ...... _. --. 100 NOTES: D I. WAXIMLM c.~ HE.IC:tHT t-JOT TO o EXc.£E.D • 40 I~. ~ ~ ae.v LEVEL APPROXIMAT~LV"~ ~~w~ ~ 1!l.J5TALL ~~ ~OR '9 ~RI"lu(Q4, ~IS, QU., qn) 4. LOC.AIIQt.J~ Qlt,Qll,.\.5j"I4'J"'4&.It.,~~ ,j\ "-JOT U~E.D -,T ~~!~ "~M ~VfL. ~ RIM.AI6lMl!.T08EIN5T~SO~~e ~ ~CONT~ WfTl4c:8-4. CB-I MUST BE ..... STA&.L.ED Fl...USIo4 11) n. 8OARD. c c IT~ DE.5C.RIPTIO~ IMI P/f\.l QTY LOCATIQt.J "1 CAP C.ER SO'V .Ol~+ 03005&. 0 SEE ITEM "7 108; Ie 51\J,41~3 0308"3e 0 ,E. III IC n41~CPI O~0-t4~ 0 UU.E. III Ie. MC..334/Q 030qq0 0 5(: B B lJ~ lJ ~~ ~~ lJ A A fTzl [KJ eo 2 P,-B A~, SERVO 3101140 c 01" Z. KY. 8 7 6 5 4 3 ASSEMBLY OWG, ASM 310176 8 7 6 5 4 3 2 • 0.'.. :E( Jrw-. __-..jl--=~':":~ __ +_~-..:I~ ~~-~1B~;, ·- ... =--+---=-,::+~--=-~,...... , L i 1 (. 11 I o4-!:e='-.':~~~-I~~+--=-~~~~~:=::--Y ':5 3:t1·-~rQ~S ~ N;...J.,=-=~;:;,j,..~....:IiJI'II"-! C.I ':>'-'EET I O~ ~ .1 o eotvC""" D R2 ~ I~O )- ~ .....______...... l.J...,/....:._. C~"U /!lIP ClJI"IIIUr RI 130 : K-Q>,;O • .,c. ~_-~----4~-~ c.2. .1 + 1,'1 c c ,...--+-+iQI ~ 2.00 . 13K C. -:,., 1% '4.00 pf ~ l CIt +~I! "'II I -/ 2.' I : ,r:- -12. V 2':> T~~=~~A~~,~----4.~(~) B B .:.:1k.::-:~-=B _ _:ila;~--~... (~£) + 5 \I -.a. oQ;[) 22 ------.1.1----(~) A A .c. ... l J.lI"VC I ~CI"" .... 3 z;· • ir I ./ /' - /_._~ _7_/'----.J'-=-...;:;:.. ___-I YIIl..l.I~ ..~ ( s,,....'.i ~ ...... -=MI' TOLIIUJllC'IS ME ~(fi·t~~~N~ __~~./~~ ______~ ______I______.._' ______~ ______~------~~~~~~ __ ~ -':T_ ~. -.. --, ::s~o, 7 6 5 t 4 3 2 1 SCHEMATIC DWG, ASM 310006 (1 Of 3) 1 I u I I 1 2 I l~\OOO1 o.w fC "" 0.. K ... ..iIII .• o Io-z.o-l!! 020 I=' ~·20·'" 062".. !11' flD'> A !I-U-leo 02.1 ~ ..il tZU·7, oel--,~ 2P'\1l. Co ;1-1. .,.. 0" t ~ • I1::li::7l OM J {rl +12V.-~/+~-<~I~_~I'S~ ___~-V.AVA~-, o 3-'t.·"" ~~ u.. /'oJ 2-5'8:> 109-.a1!. S'-EET ~ If !!AVO lo~ F"' -l~~J4:::-... ____~"""t~ II ~ZD' ~------11 10 z:'A~ -\ Z. V ..--.L4---D'1I""'~i ~---''''v''''''''''''- o ~ c.Rvo/~r: -'l..... 3&..5 ____ ~ i • IZ. y r------_ 1-5" ..:~~~~ ~.c.- DC:~"'Ql~ CfaZDIC.J Rar. liV' '> L------..;.-+-----t------______~ /.1«: II( .--______+- __+ ______...... ;!O~ .. _ ~_ OFt:TI8.(:.r. R&5 I "I. 100 I y. ~ . IC)~ r------~~~--l,------+------_r----l------~.'~V f/'f ______~29~~~+ ON-T~ACK II;. ~39i0>--1:!-----t--' ~ ~12.. Y III /0 - 11'7." I H. I ) .. H + , .. " PoSITIO'" U~ 1 ....i.\.!!> ~.L..------..,....~w~-....i.v/ 1_/. ~: TPtl - !I. Ii( C2.7 ,? .001 o - ,..----11 I----- RII TPS • c lit 1.1 IIC • • - 48 .--______....,;;:ii...... , PUJ.£Lt;. " 71 1'13___ 7 j ~-- --~--- ,.-______s... :L~ - PLO . !:Il'~o~ A R 1'97 ~ IK I 1 I 6 I I 2 I sCHEMlnc DWG\SM 3100~ (2 OF 3) I 8 7 6 5 4 3 2 '1 3loo01 D D tt7 JK < ~ en.o .--...... ---~ ..1.1 ...LJ > -r'Z v CflL . ()J ..... fI'o IJ( ~> 1'15, • "'.04 ... 1:1> lP"'-----...II;.::-:..-.,o.-..---- ~ 02.0 "-.A A A ~/~ '2.e c c -/l v " UI' 1 ~ ~1~ TL...... -______-+ ______-+ ...... _~IRl:5) rPIl. _... ------B "'" 5".0 £._IItmIS L-______+------~_+------(I-)------~$~1.~~L·~~L~·~~A +3.4" h"A/ (NOTC.~) {III 7 .U .I!/ .. 1 {liZ' IAP,/JL .s.,-:/~ B B (.7., ~ ______-______..::s;.;~~.,.to- - Fb~~~· L.o$.S L3 NOTES: ((JIIUSS -C7""f~.~~ L I~~O-,.....------~) 912 / ALL IA~",a AAa s" .tIf. WATT + CI41 4- Z Mt I" ~JIS"fWS ..... +I INff'T 1-.- "f .3 Au ~ .-.A. 1M ~fJ'Rr114D ., IJ~" .fl/ll"~CI~ }CMIIWIC -'s-"'Y. ~~~.~b~,_1~~~,7~~~-----._--_.------_+.~ ') >.11ItT M. a;," C) )"'wrltr~ 114"rlltuH ZI()f. CJ41 ,ClOt .... , etas -\01 d) ,ILL alUll6tINC"I Clfp. b'~ '';'; _OI~r ~1:~~C:~~~~"4.CI:l.b p051TION • I.Asr tEF~/l.~/JC.. 1JIEMeAT"ION C lOa, c.1E~"l I ~'48 I ell "&"1, L ~ GNO -----~~~---~.-4--.----I,~~,~~~4-,-n-,-~-&-.'-~-,80~ IA J1'4L·.. 1" A ~. 2EFEe Et.lc.E; CE~I<:»Or.."T\O~ ~ W'!:E."D .?#*t:J ;u .loP,s ,~,:: ,H4, "C-I,U- 1 .:= tc I - '--lCo. , •• % , c- 5 " C5Cl • , .. :) l~~ I.E I 7 i21S6, RI45 7016' 1 ~I~ 7#1'; 5t7" 1 cQ. 1'5 I '-~ ~I -'-~ '1.4- C4~ C13~ .~J}o ~ e JfI 4.1,,- T T .01 '#I'~ 4: , ~ -7.4'1 Rn,j ~ C::>NO /It.Q.C TIeD ~eET ~ A A t;I,,,L ,18,;0::, iF- t AND _~~'~~~o~_~ ____~ ______~~ -12 ~~ Jnl J.~ r------~~--~ "i!lZOI&l . .11<." F, l,.., s ':~)'lt ; ... ., ,,~ 7. iNJ'f" :'~F,4.-1)!e j4F"-.! He,H'" ~I"\ 1,) I'/CU,.L t iF L .... 1 .. 0fltRJIt'WISI! ~D ~/, 0'" I '&C $",7 , 0 _IIIIIOII'IAIIII_CNES ~/,JrH-' "!~ 1 TOLIUIICII AM: ~~oUI i"~J~~;'1.L"D! II .-...c~ ~lI~' ...... _~'[ ~ .. I 1"21\ , , 7 6 5 I 4 3 2 1 SCHEMATIC OWG, ASM 310006 (3 OF 3) 6II [=:JC102 R194 o I RIIS JI RI51 I [=:JCI03 o ~ D~~~ ~~ ~~ I~ fl ~lls iii OOI!J IR2051 Cl04 1RI54 1 IR2061 ~ [=:J Cl05[=:J Cl06[=:J ~ c:::::JC107 C40 c.:1Cl01 ~ ~ ...... o ~ ~~I• u •• o~ De C59-] c:::::JC111 ~ 50- ~ DB ~ ~ IR2OI1 OfIi (116 14 ~ c:J C117c::J cnl[=:J ... i•• ..fit C50 J -- ~~ ~ ~0 I C122] [=:JC123 m:oC124 c::J'" - 'CI25[=:JCI26 c=:J o\0 (146 36 o ~ [;3R35 ~ CR14 ~ ~ ~ ~ f'I') IRI791 RI71 I~I~I G :E fJ) ftO ~ I R66 I C130 <: ~l!@ [=:J ~ cmJ ~ QQI3Jk) ~ i, ~ uu-~--u Q ,.------~ ~ 1'2~1 ~ ~ :E IR1211 UJ ~ R51 fJ) fJ) t4 <: f~:6~ Q 1 R30 I QQQ Cilll CillJ L!ill I C42 ..,... I~; I [!ill [ill] I R43 I u rn2J 1·1 C!ru I~Hiii- - D ~~~G 1 C2 ~ ; Rl C136[=:J R2 I R2011 [9[] ~ C139 (CR2I) ( RI67 I [=:J I RI96 1 I-C45 I 0 t:=J ~ C41 ~143 I RI66 I ~ I (47 I '---C4---"';3===>1 CW-J ~ ~ REDUCE TO 1.000 t' .005 8 7 6 5 4 3 2 D D > •- ~ ~ > / r -0 l~ r :~ c 1/1 ~ ~ c III! r-6"nQn=o~6~6 :t6~6~ B B rl ~~ ... •.., ..... Q r- L4 :~~ W] F-~ ". .. = ,.0.. "':; I) A oJ I~ --?C.~ SCHOoAAIlC ,MICP.O ~IC, I ~.o. 7 6 5 4 3 2 1 SCHEMATIC OWG, ASM 310071 (1 OF 3) fi• ~ m n c at! ~~ -_La.. -su.,.ott. @ OD~I _""" PIIIO~ I +5V -!NOt:" : _ WI«. PIIO"TW " 11- ~ QiJ-o,,".4 00 ,,~ @) -OIF"FU - PLO [JIJItOf'. ~ -- r-----<4O) - 01 FF 1'- • 0 - ~ L.O~ -WI' • + ~C.TOIt. ·5V 7 '" -ClFI' .. .. 11.101.)( "11 + IJ • : - - RP4 A"!JO ~ I" ~ ~1 4 .'11. 15 - 011'1' t. /.0\ 1.1 2.4 '"' -....; 1 C.lJI./~f c,.. ~ac ~-Ot""1 11. "1C/-,o, D. 'S PIO • cUl./-nt:.\ P, z (3) 1 ~ &.1 W"lO I D. t::::------!~ V 10 C\J(/~1o, D~t-'Zo:::''--___---1t!J 1[1 11.4 C.L~"Ca\ Cz.t-'i."-'7'--___----!~ 2.10 QI~ CP,'2. A'Z..I - DI t-:l:;.;;..,-----..:~ A~4 • 4.7K IN4148 W"T"Ot00 imlEO IM4T IAt...... 10 "7.3e 1!80 rI - 1t.!"fUI,.. VPT ~ eTc. M, M • "" \Cii:Q r=---~~ 1t.b ..-z---~~ !l.; "'34 II 13 11ue ~ ~I~- C!>1ll ~IEI "" -/11M UJAa\..[ ~T SH"T 1D4 I I III fi"T 5H~0I. RP04·e Is -J./w~ • OI-J TIIlACJ( l!! )1---...... L--+---+--~=====~_====__ , 1,1 I 1=h II I OFF~T • ~c. VELOCIT'" @ tJMI -R/W FAU\..T @ I I I 0\ en " I-Jtc. en "~CI( CE: .~Vftlo ~ ·c~"" lte • ~ Of' T~K ® T I I I I I II II I I CA.. 1.4 ~T 11)4 14)- o,b..,.A WI!> 4 A2.~ ~D AD~t~5 ~5 ~r 11) 1I L hi < I I I I 1~ 11 .80 c:c!~~~u!> ~~ I C" I I " PIO PIO ';H"1 !o. (t) ·o(,~ -5 rJ'l f,·I", J ('") lEI ~ 'VV :z: rri iiJT~ .. ~ ~~ A'J~" I..~O& /f ~ I----!I ~ ,--- ('") o I«fN ffi~ 15111'( "" ~Qi3J~I' "M 3'M o~ ~ 11a.tG ". ~ 0: 3 I~ "3~ W Os ~ >(J"J 1 A~' 04~ I.--- ~ 1[0 D) ----7 ~ im oz...!- ~~ S\olT~1. ~Iosa ~ ~ I~I 0, ao D. ~ GJf-----· ~~I ..L 'i.e,c 0 ~ ~ ~ .. Pc. CONI.tEC.,.OIt. -=- PIO i4,' ~5 I r 4. -~v,"e.\..or..ITY o 4111. ...-- "1 (4) 'JI 34 o l.P 4.-1~1 A, ta, 4:l -rwo IItlllCl'N •4 T.~. I - 8 A II 51 I ,,-MS ~ ~~ vv 1 T- z q I. " 32. 13 JL:::""'Il. r .. _ +IIJII"'ACI-I A r. .- A5 lis V .. N y 1 T.I".' ~_ 10 A. ~ 31 - GD-"5l'IODI~ - ! r.I' 5 12 '" Is 30 \I ~510 ' v ,,'TP, I. 13 '" 3 2."1 !!lEeK P --r-7 ... ,. +"TlVIoC.~ ~'-K o z. " v 'T1 i ..!!!.~ _ 14 A. I, ~ ...... 5 l J"o. A&.. ToP. lJ 15 AD "0 2., ., J,.;,.... e (H -. V 04-5 .C.YLtvv-l - -¥' r ----,------,- !>I-I'T~'" I'IO¢a .PLOCLIC. ~,.,~ I T'~,~ T ~T ~ CMCISTATLI~ I 1 I--I-~ - CA~ lSI. I ~T 104. ~ .. 41 '1U& } -.s -c:.MO ItO.. ~T ,,,.. l. A6t .6,1& !~_4 ~I '2. 13 L")oa II -. 17""' w L- w - CMO ST~M (.!Q!)'-----+-~ r I I I ~~ ~!~~ be (103) -5Uk~~n ·C::MD~/w @-- 11S.). " (MD ~iL[C' I @---- 17 .3~.t ' 24 } + PO!tI"T I'A(::U +'IJ +S'II • CMD ~"'&'-' ®---- 1, j21. ~P4[[DJ II I I II~"" 1:7' ~+AAIt.I u"' - ..... -~ . - ..." --~"J:S' ~Ie 1 +~~z..+~'" 5 • ! Z "'3"1 III -~L.UN\T ~'" AU ~-~,WfT~OCIt.I 1 Z ~.~.WITIoDtJIIt.z. 'WJ!I I PIO (I) ~"!>(\..,\.AIn" 10.001. !I ..L r-- I. ~3Ae 1'8Y" Z. - .-POLI '" C\"'~wl"c~1 I I I u~a ~ ! A. "1 '" U'!>4 5' 1 1 • e. A, II :u , U!I Z. 3Z e, As .. , ~ I )1 8. .. 10 ~ I~ I JO • A It. , pJ J " , T L't ~ oj I T 18 e, AI 14 1 T TEll. /1.., " 80 A. J "'U'(~MNm VI IUll!O,7 , ! ! I ! '..J8 ;~!~ , I I I I 'rJ ~ ~ .~I------~ (). ~ .. r +!IV ~L !"II~ ~ ~ ,,1. ~ II< ..... o ~II ~ ." °1o 0. VI ..J '" ,. I I m f ~ n r o 121 8 7 6 5 4 3 2 >II r- -' .. ... N - & III ,'"'..' .... til '" s ::::l s: S i ~ i ~ ~ ~ ~ i tD i'" i j Q 0 0 0 ~~ d ~ ! i ~ ~ ~ I u ~~ 9 ~ I.! ~ v y ~ 0 ~ .. ~.. '} "~ i, ~ ~ ~ '! III .... ~, -"'- « II' r .. ! D D ; I ~ i .., \II '"r r i ~ ..,'" r • :i ~ ~ J__ I~ jj .:1'- ~- -:::-_-,1. ~ I ,------, ~~ I I I I-' II .. ... =j I (4 I I I 1 I ... 8 8 I I ~~ :~ -<~ do~~> _. ~ ..-- I I !! -o~, ...... - ... I I I .....-- I I I - - - - ~ III LI' "I Ii ~~~l ,~I:#- ...... , tv :s - "'L - . ~"111 .-- r------....:.J-~,.., r------~I/I ~ ~ 101 r--- ~ r------' ~ I) r-- ~ ~ ... M~6'~:f04~f\ r------~~ N '-- ~ '-- -=L ~~ c C 011 B • ,..1 .... 1...... '" - .r- ~~; ~ W'l u " 0 ~ 't -.!.~- > > ~ 'r. ~ ~ i:i~~~r~ '!' ... iT h Q - ..ud ~ ~-frlll f-:\ I ~ :~ ~~~. v -t r--- r--- III 4 .. Q.., ~ c1 0 a ~ET S A t- - .. t- '"t- Il Jt A ~I~ ! ~I ~ ~I ~ WI III ~------~ i~ iil (I V (19 ~v 1a a s: ..,oe. til J lu til ~~ v ~ '"J a iii til 3 U ~i{I ~ d ~ Q III It Q. 2 ~ 5C.HE.MATI(' I MICJiO L.OCaIC. ~D. i~ a.. 'a ~ 9 ~ Il ~ ~ f3 + I~ B "'CI ...- --~IOO'1. e-s 7 6 5 4 3 1 SCHEMATIC DWG, ASM 310071 (3 OF 3) £,ZI o AIO Al A2 {l]] tnJ n fl A3 M A4 M 19 ~ L~ L-J LJ --;' u 2 • YI ( 1 ~ ~ L-.J ~--~~---~ ] A 11 A 12 RPI RP2 @) ~ GO ~ ~ ~ ~ , ~ A15 AI6 AI7 All A19 U U AI3 0 DOD 0 0 0~ ~ D § ~!~II 8 1!1 A 20 CR2 AU f:!I I:i!1 I!iI I A2~ I ~ ~ ~ I!iI I!iI B ~ J ------.JJ ~ 0A23 AU rJ A25 0A26 0 ~ ! 0 aOz;: ~... .,2 cs... ~ ~ 1m] ~;s::o A27 A21 A29 A30 A31 A32 ~ ~ ~ '-LJ~ D;;~D ...~ I :0 ~ I I mi •&. ~ •• • I 05 ~ A32 __ ....t! _I: --.L....JI. 0 A39 A4a ~ A~O :oNo A35 0 A~D AVo ~D ~ [Ji~D~ @) + A40 .\41 M2 A43 A44 0 I ~D O~D Do:D~~:~ ~D ~D A~ 0 A4tJ ~ ~ii 1m] o ~ =r------~--~------~------~~------~------~~------~------~~------:. m n ~I!I~ T c ~ 00 .~V -.5V 1" ~'" RP4 4.7K 1oW..'T Ia. _1. , VDO A~ IS" "14 u• ...: AI'S 1"1 .., .. I "II 1 1 ... ~ /4 12 ~j All 1 .. ~ 2.II"-L AIO ',,~ (1014)(41 A.. 4 A, --... tr.. 1 "I...... I. AI ..... Z51!.U!11l.Q. A.. 34t '" 3S 5 "'& As "t ....,...... ---;',.,' 1/0" w.. ~ A1.0 34 A.4 "~_-_-::'~l.I/Ol A." AI A.1 ~, "",_--:1-;-))1/01 ~~ 3 4 1.41~1"T A, 1 1. 1 1/ 01 AI 3' ~eo :~ c.pu !O A. ~ 11 r 01 +!IoV I~~T ~~01 '101!N't.. I 10 ------..e.>----- O~ , 05 11. , VDI) D_ D, 8 ~"T lot> It "-1M I "I ..... , 01 At 15 DI 14 D. 211.-L 11 M. M, (IOlAlI") 0\ MREQ Iq IvIIlI'C C7' .. !IV u.M ZIo, M.~i ~ I ~pw.1Z. ./ Ca.l ~ t8 ~ 1t.l41~ ~K 1) -- WII~ ~~ 121 D~ ~ ~ 1° l.-" q AI4 CJ) l!!I08 e n -P~.LO~S ~Tl.A6 yo~ xr----~------~--+_~~~------~----~~ :t ~~r--+-----=w~.=------~ rT'l -+--_--I---~ - - -;5; ------, I ~ I l'" - 18 I U1 ~U1 'I CE. a I. ","--=___ .J" ... ~ '=-_~&:Jl to. All 0 I' ~II n n .. 1 II. I to.. IIIOM 0, 15 Z.111. ~ a to., (21'oKa) 0, all-X.) '-"'--=...JA. 3'300400 04L.;1...;."_-=r ~ ~_~J~,,~ O,~I_~--J ~ __4:...JA. 0 ~I_I_--J 0 5 4 & 10 ~-~~J O,~--~ ~--"""--'A.1. Oo ...... :-----=:::r >CJ) x.:..:._--.;':....fA, I ~ ,,0< '" '" ,. ~T t~"·~A7 (J.a .~,~"-1_-=8:...a... ".0 ":' !b Sl'T5~ '!lHi Z. "*- ~ '5'-' ififi I-l o(,,~ -=- I-=- !»I-4T tAl.. ~C> CA.'A. ~ ~. .. WIT '!I€.\.Icr SHT t.O~ ~~.-l ~ ___Lro ___ ~ ___ O_I~ ___ ~ ___ 5_~ __ I(_~ ___ Si___ ~ ___~_~~I ______~ ______!:~~~~ I~ -.o"T , AI. . ~~ C> to.DDII.E~"J BU'!o I-l ~T506 - -~D6A'n 0 c.Ln' 'PoJ.. '!oAc. [> '!V!/Tt.1Ioo\ ~Ol. "T'.I eu~ -II£AO o.t."TA (1 ~ TItE.AD OA."TA. U2.... Z'!iOi to~ J -o.c.v~~.a.3Y - .. /w C.LK GD- -0.:5\It., "O.4'5Y. _ .. rt.!w C.LK @:)- t ... ·tF" 30... A47 ~TVP ",,"l 'JDe. W I - W ..I"T! ~.!. ~ W I .------@) + R/'N DI\'TA +5\1 '4 I "YI. -,,/W .0..41 Vee. r------:-/lo.-,4""''Z.---vl.,,,~---.,llo ~ ~Tl +'5V ,SilO 1510' I-~ +~ITE.D/l.'tA 1'\'4 'ZOO NL N 1111 I'I,IOj I ~ I~II ZOO ·5V ., ~ k!~ -5V -=- { ~ S It- ••• ~·5V R l.c ." , 'il~ ~ +WG ~i Z A~ o ~ 161 5~:~(., ------r ~y ,: .. .. i NcrrE.~: (utJl.~'5I!) OTHERWISe. !lPECI!='IE.D I ..- I 2.. ALL CtlPAC.liOR fl..RE. IU loA F=" • ~I~lJjf -~ p: 01 ~ - 3. ALl. ~5IST~~ ARE. I~ OHMS, 1/4W 5%. f ~ I. Al.l. ~t-J'"14X)(' SE.~\E.~ \C.'~ : (I,,"PltJ) +SV A~ PI~ 14. I u"-lO A"T PI~ 1 ~I . y/ (I'" PltJ ) .~v A~ P110J II.. 6"-lO A~ PIt-.! e 4. @@ - DHJOTE~ E.OC::£ CD~l.IE.C."TOR Plt.j ~O. :P, I I I ]III r-----li CD -- f n o 124 8 I 7 I 6 I 5 4 I 3 I 2 ! 1 !D.,. EC "0 IDMo IEC "" A i•. e 4C \ 2.0--!C ..u----+[ :..:...... ----tl------I 1 1 Y o - - N i ! i \ 1 ['------i i ! j : f ! I I : c c I I ii I I i II ! I ' I I i I I I I, I B B I 1 I ~+--+----J I •t'I. ~-N~N~----~1~~~;N I ...... /V\r~::..:...... --~+--I--:.---I ~ _ v V" '" I I ~ I - , ~~~1 ~ ______~__ EE__ T_~~OF~'~ A A ...... - I~" --ii1'iJ:r "-JE~T ASM 3'0161 _n ."... ;'l 7.'/ '-'/;;;.' 1- p. c..~. 5C...a.AATIC. ,MICRO 1..0&1 C. ~. 0 ...... GMI"MIC ...~ .. • ...... IIO .... U. 8 I 7 1 6 5 t 4 I 3 2 I 1 SCHEMATIC OWG, ASM 310181 (2 OF 3) :. OJ n c ti .~ n ~",I"! -W~nt (oAT" ~I - WME+ ByT PM1EX:.TED Z. :~~~--- --"" --~ J! I _~ iii -~TE 6ATE ooi I ~P (~iTE. 00 ."VOO ""'n. ; L!>OO" '''.~ EA'-l-Y I~- ~~~~~_~ ~ '~TRoeE LAT" ~ IIII "U ~'CM08U'&" PloplCi :~~: ~ -- -- @) -CMt) IUS I. ...., A, ~10 . C5I) - CMD IV' I 110 .6..0 '" C£) - cMe IIU'5 4- EI~;?(~ =------~ -CMD r,U'!>:I ------~~. CMO au'il 1. -----~ CMD eu~ I ~\1Tl.PI CMOI ':>TAlU"!> ~4 (ill-("-AD ~U!l IZf ~TI~I (S€C:1!:>C) OAT,. 8U!I 10K 1I4--\ltAc.. ~p '.. fT2A8 4 -& ----+~~ ADOR.E.~~ ~~ ~ S 'S.1-l'TlM SHi 10" • RII + II\DEJ( '=>'v'STE.M ~T·Z.",I!> -PLOCJ...II, 4.71(FIoP'l"'" ~'TIM 8 --~s" - - - -~"1.':5 -0<.& +~Yt-Jc:.I-\C.lK~- ~ +PLO C.\..K ~_S~~ ~ U1 ...... ~~ (j ~" o ~ 'J)> ~ ~ S ~~ .a::. -~ o "T1 ~ P1-'(GNo) I;T.P" 4 (bUD) 4 w w C .... C,!# Tb::Clb-CC!t:S C:30.C3I, C H-c ~5 <"2 CAO C ~7-C}q 10 ~IO ~o ... .. AI ~ ~5 L~H. -!liV 0IJr ~~~---I--. -~v I!~AID C3C.> ··l~~ N N ro. I SPII-12£ ~ \- 2 ~ ~I ~ t",! ~ ~ ~ ~ ~!o ~ ~ U~ 5""'"~2. VI SM 1 ,.,:r .-----.~- ..... t2 j@: / ..... I~ ~ t!! R ?; 01 lJ' f '"~ ~II 0 VI » c >- I I OJ t n 126 L:ZI I I 1- A1 A2 -D- a- -D- C7 A10 I AJ C2 A9 C3 A5 C6 -0 A7 AI Ou MD_~~~ DMD • • ae /~/.' .. ' ..•. ~ .' 10...-[-----' eO '--____~SRPI S "to:.: All An Os 08 sOu ,.,.. 08 OG DI: A15 A16 A17 A18 A19 Oe AUD AI4D C17 -L::}- R3~ OTP1 -c:J- R4 SECTOR CRl .. ~ !!!~ ~... uLrJ GQ 50 50 ~ ~o CR2 A22 A25 ex) A20 A21 A23 A24 ~ ~ ~ III 0 fJ) TP2 < 0 L OGND C24 ~ -D- o A3l R7 A26 A27 All A29 AJO Cj I:C .. CR3R8 D g ~ 06 .9 '-LJ o~ fJ) TP6 fJ) ~o < 50 ~ • o~ A32 ~o 50 TPI3 T~~'~' J O_ DI: 1139 A40 ::.: ~D ~. ::':1,-1 OGND ~6D ~7D ~. "'r, D TP4 0 f 0~h DI: u,-J o 444 A47 ~rI lMID M2D ~ o- ~ W ~'l ~~~Oo ~ 0 r)5 -d-16 0~~MD I ~DS2 . C36 ~ / -D- ,/ "- MICRO-LOGIC 3101 83 REV- A LEGEND SHEET 4 of 4 8 7 6 5 4 3 2 1 C ICH-?1 I0844¢t., SH£CT I OF 8 D > R.I ~ 4.7K.n 5101 5.1.6 t-JOTES:(UNLE:.!>S OTKEQWISE ~) D ~~ ~UD ClK I. ALL RESISTORS ARE '/4W, S'1o • :'/'<5 ZAI5 14 SI-l~ ZAI4 :>H~ ...... ZA'~ ZAIZ 2 . ALL CAPAClT0Q5 ARC It..! J.JF. '-+_~~~~-+_+-4-4_4~~------__------~5~H~~~----~~. ZA'I SH~ ..... ZA4 +-~~~~-+_+-+-+_4 __------~SH~~~----~..... ZAID o ON O~IOCit2 (Z.il~·O.) ~VICkS: '-+_4-~~~-+-+-+------__----~5~H~O~--~.~~:: ZA9 GND'" PIN I", +5Y = PIN 9 I ~~ ~8 .51-1 ~ ZA0 +1:l.V:PIN 8 -SV = PIN I 5H 0 po ..... ZAi OM 74XX SERI£5 -14 PIN $.j a ZA2 .... SHO ZA3 G~D~PIN 7, (~5V)VCC:PIN I~ ~+-+-______~sH~ar-__~~~ ZA5 Ot-J 74XX seRies -I~ PI"" SH e 2A6 .. sv +-______~S~B ____~~~ ~A7 GND:PlNB, (>Sv)VCC PIN 16_ 0""' 14e,~, 14M IC 's tII r------V·DD---A-15--~5~-Z-AI-~--~~~_+_+_+_4_4~~+_+_4_4_~~~------~2 IAI IYI~I-B------5-H~2~.3~--- GI>lD ~ PII>l 1 (+l2V)VCC.· PIN 14 BAI"'> (-17V) VEE = PII\J 1 • AI4 t-4___ ZA__ I"____ ~_+-+_t_l_!__1~t_+_+_~+_+~_t_------__i4 1"2 '''2 t-1_CO______S_H __ 2...;.._3 ___ BAI4 AI3 :. ZAI3 '" 11\3 5N IV3l-1-4----______St-I~_2...;. •...;.3 __ _ HI~~E.sr REF. DE5I~TI~~: BAI3 AI2. 2 :lAI Z 8 1MI4L~244 IY4-'_2______SH___ Z...;. ...:3 __ _ Q:l,C~"1 1215, RP {3 • BAI2. t-1~~2A~"~------4_1_4_4~~+_+_4_~~~_t_------__i" ~ ~1~~------SH---2-.-3---- BAil 7. 1M' IN p~ L.OCATIOW5 I ~ l/l'l. 2.Y"*'"'______SH ___ Z_, 3__ __ pINs c BN\R£Q c NOfCAT£ THE PR()fI.I1 ASM. IS :IA~ m~?~------51-1--2---- ~ I' 2M 3 51-! B BR£S£T r------~"<.C I", :u. ~I---...l..... ------~ ·~v 20 I tl~O -:- ~80 CPU A ~34__ ~~~A_4 ____ ~~~_~~~~~+-+-~~~~-r~ ____~~r~-I-----ly',~1~8-4 ______-..:~~~1~.~3 ____ A04 5A4 .4010 ~4Q---~--0----~~_t_----~~ __~~+_+_+_~+_r_t_----4_1~ IY2rl-~_+------~~-2~.~3-- BAI(l) t-3_')....;;Z~A;.;;9____ _+_~_+------ 20 II'~TIO 7' ~~--~Z~~==~--_!~~~~--__------~_!~~~----2-;~1 Iv,~'-8-+------~---2~,-3--__ ~RF51-\ 3'!t ?'A':> <4 I~ 5~ 2,3 B ....-...:..=--~-_+__+~4_------...... -+-~-+-----I1IU 1'(11-_+------~...;;.;..;;...- ~s B 3tlo ~ ,,14 Sti_l 2.3 31 '"7JS."7 e 1A1 5 P I 12. :>1-4 2. 3 M ...... ""'-c.~. NEXT A~ 3100,,", T~_ ...... ~-- --.... ~ PCe. 5CH£MATIC I 77'0 CONTROLLE.R ~-..- ....g . -- 7 6 5 4 3 2 1~' OF8 SCHEMATIC DWG, ASM 310061 (1 OF 8) 8 I 7 I 6 1 5 4 i 3 I 2 I 1 0.,. ,EC P BA7 51-1 1 "3 1& 2L .5HE£.T 3 BA@ __S_I-I __ ______2;.A ,.~A------~13~3~3~R~Z~------______SU~_4 __ ___ D ~ I lO '2.N ZL D BA8 --5-~--,------S;~7415, ~7~------~~~33V~V-~------__ ~S~H~4~ ___ MAl BA I lA l1 2L M9 SI_I 1 10 2>S 9 10 33Jl S 514 4 BA2 __5~1-I __ '______'_1~3A M~------~~~VL~------MA2 BAIO __5I-I___ ' ______'_3~& 11rl_Z______~IZ~3~~V~~~~------______5_1-1 __ 4__ ___ MA 3 BA3 ~5I-I~_' ______14~.~ .--__I.... ~I~ MEMORY ADDRESS BUFFER BAil _5_1-I__ ' ______i--3'-t I~ -4 ~ 1 i3'n. 4 51< 4 51-1 1 2 MA4 - ~4 51-1 1 b ~ 2P ~r_------~~~------"Z"L MI2. ------+-----t~? e :'>3Jl -, 50" 4 BA5 ~ 1 5 10'7415-' rft------~'lL~r------MA5 IO BAI3 _SH__ ' ______i-- - ;3& 9 14 3352. 1 51-1 4 MAIO 8A~ _S_H__ ' ______i--- 11-f3A .. 13 .,~ 1 14 c c B~£Q --~---'------~ ~l I~ (,,17' ~-~~~~~~I----~--r-~~~------~~------SA 14 __SH ___ ' ______-.______5_" __ 4 ____ _ RASP 0 __SN__ ' ______~_+----'I~~.~2~---r--~~------~~------~SH~_4 SA 15 ______~SP I BR.FSf-I ~SH~~I ______~~_+----'2~. 3P 6.r~~ __ _r~~------~~------SH---4__ ___ RASP 2- ~--~_+__i~--1_t3A. 6.~4~--~------~~------SH---4__ ___ RASP 3 14 ...... 1 ---+--+~...... --__tA .. '- v.. F--~ +5V ~ ~T"~~J~r-----~-----+------~ \' < ': < ( . 1 15 I I ~ >'N~ N ~N ~l~N Q !:I, "., ~ ~ ~ !; ~ 0, ~ B ~~~~I----~-~~-~~-~~~~~------______~6H~4~ __ __ CASP 0 • II 2 51-44 !I~ CA5P I - ~----__i~(~~!a).s.~----~-r--r-~------~------12 3S '3 '------;A. 5.~----+_~--~------~2 - 4 ~4 RO~S£L-5H---Z------1~3 A~ &}r-----+-~------~------CA5P 3 BBUSAK ~I 14 ~ ~,r---~------~~ ~ 3 ~..----r---' 5V 2 74L5 32 -5V ~ E-J+ 4K ZO 10 -= - MDQ) __5H __ 4 ______~O;_wx ~~.~'~Z~------r_------r_------5I-I--1~.2~.4~.~_.-~.1~.~~> ZD0 __~__ 4______1\~74L~244~~------_r ______5H__ ~I._Z~~_5_~_.1_&<-~ MO, -r______"20 I SH4 2 2.H 18 ~ 1 l. 4 5.~.1.& ~l-> ------;~I ,''' 202 ______-;uu 4 5~ 4 IVl~'-6------~~------_;------SH--_1.2~~_~_._~_.6_<-~ ZD 3 5~ 4 15 5H 1.1.,45tc..l.& l-> MD4 ------;~ Z04 51-14 ., M05 ------;~ tr4~3------~------~~------~SH~I.~24~.~~~_.~1_8~_ ZD 5 ~4 13 5o~ 1.2:"5~1& ~------;~ Inr------r------~------~---<~ 20" __SH __ 4______0;~~~ ~ .~'-4------~~------~~------·~SI-I--1._2_4_.~__ ~_8<1> "ZO t A A ~-n-"""l"r---l I~ MEMORY DATA BUFTER Sj.\ 1 ------4--4------~ t ...... --.... "CI -.1______\IICMS - 1- PCB SCHEMATIC, 7710 cot.rTRoLl.EP. PMeT.-T~_-:---- _ .al- ..- I 7 I 6 I 5 i 4 I 3 2 I SCHEMATIC DWG, ASM 310061 (3 OF 8) 8 1 7 1 6 I 5 4 I 3 I 2 1 o RASP I ::~ ~! ~S~~~3~ ______~ CA5P ~ ~~~~~~------1 ~1'~r------:r======~~r=11I~------~:r======'--~I ZD0 s.c.:U~ r------~:;_tM ~ ~------!/~/:>I/) 4:)32.D-2- "1 AI 4!.~20-2 2. r------:.i:o:;AI 2. D ~------~~.u fA DI~,;;;-,,---' .....-_____-.;.1:;l4 ~ IB ~~I~,,::::_-_-J._H+-H ______~SH...;.-..:3...;.-_ D 'MD<1' r------.;.I~:: USA p-;.;4:;-___--, r------:-1-=t3 A4 RASA-o=.:4=----+-++_. r-----~...J1~A~ ~ J>'::n:--___-, r-----~I2=tA5 CA~-o-:Il:'---__H-" ~----:I:I... AG. ~ p::~~----, .....-___.,;,1~5 Ao& I:/ASB-D:~~---r.. .--__",,3 q Wl ~ JlJO.._..--..., 3, WQ_ RA~ 10 ZDI 7 2 2 1 43320-2 J 43320-2 5H 3 14 It> MOl ...J Ie l3 ID 4 r7 12 II I~ :~ - .3 .10 .3 10 !oM 1,3 ~D2 ~~~,,,~,?~,e~-r~rt~rt---~------~~~t------t~~4-ti-r----~------1 Ii ~mD-2 ~ I Ii 4>32O-2;!, I MD2 I IE 4 13 IF" 4- 12 n 12 II 1!1 ~ IS '3 ..1. 10 ! ,-__--==.3'q. ____..P..,IO"'---, ~1.3 c ZD3 ~5~,"~~~~~~~~~~--~------~~~r_------~r+~r+~r+---~------, c ~ J ~ 2. J a! 4332D-2. I~ 14 43320-2 I" 51-( .3 MD3 I.J I G 4 13 11-4 4 .l2 n 12 n 15 ~ IS !) ...3,.. 10 3 10 SU 1.3 ~D4 ~5~.~~.?~,8~~~~~~ ______';~~~ ______1-~~~~+- ____------, , 2 2. 43320-2 1 14Z 43320.2 I 3 14 I~ MD4 I~ I,) 4 I~ I K 12 12 15 10 10 IDS , J 43320-2 14 43320-2 ~~~,,~~_-_~_1~~~ ______5_~_3 ___ '''' MD5 IL 4 I~ 1M p:;;4:,---+T-t~ B 12 12 I' B 15 9 IS 10 10 SI-lI.3 I ZD~~~~·~~·I~~++~~~~------~~~~------~~~~r+~------, I ! I 4:)320-2. Z 43320-2 ! ~2.:7"""_-,1 U I S~ "3 ~ IN r;1::---H-t"-n :~ I p I: n n ~ II IS ~ I!> 3 10 3 10 SH I.:!l 1 - ~Dl =S~·~~~~=t~~:t~~======~~~::::::::'------r~t1I1------~~~~~=t======~~~::::::::'------l Eo 43320-'1 __-'1. l' {. 43.3:lD-2 2. 14 1-:2~It:> ~ It:> !..} I R 4 .1 I~ 1.5.. I t6. I 12 I' I:) !!! IS P-:'~:::-----' I' CASP-2 _~~~3~~-+~~~ ______3 ______IO______~: I' i t-_____ ~3~ ______~~IO~------~ RASP 2. ~ 3 CASP 0 ~5~~~3~4-~~~~ ______~ RASP 0 ~~~3Hr++~~~~ ______~ A A MA0 ~~~~~+4~+4~+------' ~I ~~~~~3~~~~~~------J ~MA3 ~~~~~~~------~~~~3~ __~~~~ ______~ ~ ~5H~3~ ___~~+- ______-J .:.a.u)J.I I~'" DO" tI"h'! I ~ ~~~4i------~~+------~ ""'f", (7IICIINIM IP'fClP1ED ~ ~5~H~I ______4- ______~ 0...... AM. WIIOCI PCB SCHEMATIC / DIAGNOSTIC TOU....:u .. ~...,.....- .D .IWI· 1 .5H 4 I 7 I 6 I 5 t 4 I 3 2 I SCHEMATIC OWG, ASM 310061 (4 OF 8) rrIDtDm[m:JcmJlmJlmlCSErmJrmJlmJlImlniJlmltml II lC 10 IE 1F lG lH 1J lK 1L 1M IN 1P 1i 1A 15 @j ~ ~ ~ l~ ~ ~ ~i ~ M~ M r1 lIm ~ 2H ~ ~ tJ [J lJ Iml (UI) lmJ ~ D 3C 0 3D 3f 03G 0 3H 03K 03L 0 ~~3P 0~3S 0 ~ 4A[j ~4cD 4Do 4' ·4GB 4HB ~B ~~Hi~PD ~5 D O a: tmJ·Ki!] lIn] i SA 0i 0~5D 0 5. 0 ... > [Ui] iii [IDJ (;J run rnD IUII rrn:J I C 751 6 S i 6A DL, M 0~6DB 6. 0~ 06H 0i~ ~& 6L n 6N I - ~II II ~ [S1i] [ill] [ffi] rmJ rs:m 7A 7C 7E 7G 7J L-~ ~ ~ ~ 7S ~ ! + ( 13 f!~1~J ,+ (14 J !!.!~ .J 1+ (15 I 136 ~'00CD3 ~e.v. D,/I\G,\J(S&T\C ~-,.--". "t' ( . tj ! 3 2 I "...CIIIIU&ONLY ___...... AHO"..~,.II'lIN"cc.n--1 O* __-" --....,.,... ~",..,.CW U Ale..,. TO. u.D "". I ~5V T IJ07"ES: u.vl.~5~ OT"'&.R.WI5~ SPECII='E 0 p I. AL.L. ~E"5roRS ~. IA.! CUAf' (.n. ). ~ W. '5" 0 2 ilJl..L.. c..t:IRQClTOR5 A~E M'~~A~4o~ r.-I') ~. A..1.. SA/74If.)( ~11i~ I.e.. '$: "", 14 PtIJ - PIA.! ,4 • * ~v, PIAJ 7. tSAJD II. ,t.. PI/J· PlJJ K;. • '* ~... P,1oJ e. tSJJO G, I!OPIA./- PtwbJ. ",.v, PlAllOaG.JJO ------4------~.~~ ------q.;..,~Q~E e _ -----~(~~~al..~----- WMT ______1_7~~ c c MIt-MeM ~NG~~------~I ~'7 r r---ao:1~/''-~'~B«;;_2i.n~'/~<;l '9 :!. ~ I. ~-~~,-,..:q +SA ------....------+-- ...k--. /\-:44;---' ,.~""Z"--_..,17:_15D 06 S<; ~~"fir H eLf? p=-t51if 14 ." 4Qm'~,,5. ~l'~ c. .0. ------+------+-.1 2 -0 ~~ ~~:,_r- 13 '0 3°,1 1<>; LS,66'D 13 ~'ZzA/B /- 34"'c e 20 ?Q~~ QH -~'" ..- .....-... -..L. -~" . L574 ~ CLJ( ~~i='~;----.:_:41~~~ ~~~ ~ 13 U II .- -, - < ~ <: -=- q~ J L-...-=3:..o Q~6~~------., r--- ill a. ~ 70 ~ - 'T.'''' - 15 tK ::'"6 ~ ; ~ S~ ~ ~,' -rr, ~ ~ 2C (M~p--...;;-tr.o 3C 1IoQ~~ 14 ~ ~ LS/3Z B .... ~_~-~------~>-~-~>-~-<+>~,z~r~--~~- :1=~ ~-41-'-~------+~~B~~L~ ru>~~ ~> ~I~ r. : R/~ ~> : $ l ,; J '"') 9{) j 4 'OAD/~'" 1- ~ .. -' 240 ~ ~~~_i ~~QZ-L ____ J r;;-- ~o ~------'--_+-----r_------_+------Q4 IZ D Q Lr--.- I 111;::"'- - ---, 204 ~ L574 •. ZB I ..! J .:;::.... I :'!"r;> QJL~ 16 I ~ ,z I -J r-r-I-;::~---:!1C4CwE----..,Z ~ z J ~--+----~----~r_+_~~'!~II~___--' I Q '~ 9F ,I __ L5S4 I '13 L----4-<'3f)lllo,oi>-,,__ t-+_" r::!!:'J , 9401 ., -!- L ______..J ~ 0 ~:f~:..'------t------CA:::~ 't> 5,~ ~?'~ ------~------~:~.lr'~ z c~~------~~{~~~ ~------______~------J ~ CD T :+12V L------+------~49 .. ~Rlr.&WTiII '2v A G).... ------1 ...c-30----I+-a-e------MASTER ENG'R NO. 310'57 A ~.I ~.I I EOB------~ PCB SC;.IcHATIC, COAJ'T'ROU..ER /i...06IC AU. C·"l~I(l .., ,-eMU '0"' •• ":-(5, o I 2(,,'3-01394-001 I.'-A ,aA.C'I()IIrt"" • lAI'tC.:HIo •• 5H££T , 01' 4 ;"£11 ....- ..OIIOt- ..O 1::' 8 , I 7 I 6' ._ ._ I 5 . _.t... _._ •. _J_. ___ ._.~:. ____t ~J 3 2 SCHEMATIC DWG, ASM 310156 (1 OF 4) r~---··-··8 .. -. --. 7 6 5 4 1 ~~ ! OOC-1'_""''''~JIlT'YO# .... _.,, _ ___.. .,.10 • ..0 1 203-013~4-001 ---- .... ---"- I 1 I· II 1 .1 --, I ~PLO ERROR ~(]~)------~------~------~------~ I -WRPROTECT'~r------, ! I -WRPRO~~~lj~>------~~~------~ !~F I Z C35::) ------~ +CYL E\'EN D ~~" ~ +TR4CK 5eEK Iq~ 8 - 5E~ Ot$lo.a.E "' 6 >-~ - ~wo YE~OCIT't 5 L!I!!oZ C7~ .,,.. >- - REV YELOCI TY S Q 1 ~ - OlFF 128 ;:-r;: -OI~~6" 2," - OtFF!!o2 ~ ;< 50 - OtFF 16 ~ ""'< -DtFF8 ...,~ ~ ~ >=' !to:: -~4 ""'< -DIFF2 --~ -DiFFI MEMORY ENABLE. m;u O"T" eus > .><> > I, tU9.> ~> RZ& I'''> > '><> RPS,",.1K > IK'> > 1M. I~ :> :> ~> ; I .:> ~> I __ ~ "i 3~2i------~_ ..... i"~~Ruji'f ~ st6ROY ~ItCUl ~ ~~ I . -C~ ~ r---+-+-+-+------~~cn~e~--_r--___ ~_+------~~[)~ CO Ho, voo • "'5 I'f') ....."38 06 l'-!-~!~ ~__ ~MiJlO'~'.~ ~~---r-r------~II~O,~IO~~---~---+_------_CTlO~~ -ALTRL ... -----;q05 os 'IB • """ D~ , ~ lei ~ t-~~~------15~o,~I~~------~~~~------~~[)::J]D -SlfL.AoCM. "\.~ 1 Os Ot Nt~l:_:'~-~ • qa ,,-10 0.1 0& ~~I. t-~~---~ ___ ------~s 01~6----_+------~------_,------_Ctn~ eusClA 1 0, MT1 1 10 ..r---.. • ~ ~~ 31 YAV"V I r--____-~2'q~:: :.o·~1~5------~ -POSonTAA A MASTeR EN PCB SCHEMATIC, CO"-lTROLLER I LOGIC ALL DIII(NltOItI lfifCIot(i TOLU*NCfI o 2""3-0I3~4-001 AA SH~~T 2 0,. ~ B 7 6 5 4 3 2 SCHEMATIC DWG, ASM 310156 (2 OF 4) 8 7 6 5 4 3 2 1"MIa ...... AND TIHI: ....()IRIMATION" CONT'" AJ11l'HI~ItT"fQ(J'''''' Me YO .....O 2a:.'3-013CJ4-001 0fi&'I' 'OA"'~ CW ...... AC"..... PM'T'a ~A~A~~8~-~3.1.-8~.I, _2_7.7. III J I , •..'-".MU~_'-+ __~~ __~ -- ~ __ t-____ +-______~I~ __+- ____ +-______~e~I~I-o~~~,~.~.~~ ______~ PWR lOSS C~5 -RXD c::5:::j IN4148 .SV R~.4.1K ~~ o I ~~~I C>R1 1<<):>1 c 4.11( L;--C' C J 432. C c i I ~ ______~~------~-'!~~L~II 8 I.F£R6VTE ~ . ,.....9F ~ ------~~------~I-d 3 L'!>32,,, n:::;...-____..J 9,.L~ 8 r---.-----r--"--.--.--.-r------rt-i------~r------~~~~------_4--~+_--_+------+_------~~------E08 o ~ '11 +5'1 ~~ ~~.,'~f7.,,;.--.t-+H_--.--.+_--"--.--4--.--.--.--.--.--.---.-i5DS\ICiSM".iiwiiAli'fT B ·bi LS32 }.:::::e+~~2. s 5 ~2'-l?~ ~c 6H ~ •• :~ 1 9 4(; D514Q·~"""'-~ R6 ~ FI-4 Ii 3 AS .,"tt- ~ 3 40_ Eo c.~ ,36> .5 " 4·...... :.=:..---4+---+-----1------~ I ,-+------++~ "Q 6'Lr Qc:t-:':':t------'TfA! 6J I ~ Of'1 6., ~1~4 ~ ....______~2.~ ~ 1413 5 "0 Ci, 1 RS,I.5K !!i91 '--- A 1 1 10 vvv CLOcK RE~T ----.--"--.--.--.--"--"--.--.--.--"--"--.--.--.--.--"--.--.--.--"--.--"--.--"~~--.--.--.--"~--~._--.--.--.--.~~----4_--"+_--.--.--.--"--.--.--.--.~~--.------.--.--.--.------.--.------.--.----.~--.--"~----~ , 5C .JIJMPeR ~ ~ # S ... M~05C ~--~~ __3~~~ ~ 0 ~ Q~5~~ __..!;I%~O 5 Q~ GND 4 Ie .---- 2 LS1'" L"I>14 ~ ClR ca..~I-=~------...... ;.=!15~~ -::!::- ~IC~L.SIS' Qa, It L'S32 0-:.1.:..1 ,...... !.! f> 60 I ... 8J~ - ,~ lCo 6C -+~3[>6D ~64~.~'~I~ ______~ 13 "Co A .. ; "5 &, II 06e ~ZC, 1 ~ ~ ~.,...,~-:-O______7'I +RlWa.K~ ~ Izr------, ~2C.z ~ Tt ~ .A4 R'ZO , lis 4J ...------;.10,.... 2e, ~ " 5 +5R 3~O II I" ~ 8 ______EO ,....J 10 • 14 ZCo ~ n..QII~4:- ~::15 AI"1 R/W (;LK ~""' __-+ __ -+__ ....J I I 12 12 ;l:..: q ~ AI G4,1"3:::...... ------.....:!.l~II.. o ~ l""'Oe. ... L~..o_I __ ~1Q.1Aj ~: ty·~q~~------+------4---+------4---~ cE cl R21"> '> RI9 6 8 16 ~ I..-..-- LS14 240 > >240 14 4F I '~ ~o:e~+------+----I I' ~~RQ~ ~n>z ~ ~--"""--Sv ,,~ 10 -= '-i[L i [:7 A .PLOClK~~~~------______-l13~'!~~4~E~I~Z~------~------·PPLUO~CLKLK A +5Y"KHCL\(~ l.:7' MASTE R ENG'R NO. 310'5"7 ....·'NO"-lE. PCB 5C~EMAnc I UIIUU on"f.-w!S( ""'[I'I(D I COI'-JTROLLER, LOGIC AU. Dt_fIiI1oIIOII'I 1NiC"[S ,()l( ....""u o Z~3-0 ..394--001 AA DlCNAl 1f.J! '1UC1~ ~ .DJ.!' ~UL.&. ~ '3 0,. 4 ItEV . 7 6 5 4 3 2 SCHEMATIC DWG, ASM 310156 (3 OF 4) 8 7 6 5 4 2 1'MIS DRAWING AftC)""".woMIATlON" ceNT." ... TMI~JlnOlJ _"''''1'0. Ull'D AI Z2:3 oo.."'OIt .... ~ 01' -...oc:--. ~ A'" 8-31-B, 2."7"7 ~ • _. f J r ------1 '0 -- f-~-----4~--~--;~---+-----+------+e~Ii-~O~;3~9~4~"~~"I------~ 1530 ? ? >??? ~ ? I 1 <' <' (> < .>.. > <" 1 ~~--~------~~~----~----~----~I------~ ~A~T~5~~------~,~------_~t 91 > »»~. >1 RAM &.is ~ ,,----=Oa?,--::8.,'1---' : , ,. ~ 082 RP6 o ~- le~~I'''R••, L~~I~ oa~~oe3 (0 I D I ~1 t1.,0 ~~~' ~: ~QI'6 D.~i'-: OM S I 330/390 '5 Z 14 6D 6Q~~ ~ ~ 6D 6 I ~~R~~ L.-______~~------~~------4-"qJL~Z ~~r6=------~----~~------~w~A~e~~tr/~M~~~M~ I~ .....,~ X.~ER5TEi +5R ---'~---r------~-----+-, 9 INTERRuPTREsE:i ______.. ______iLCR2.. ,I- ....~'.~e------~~----\0;,a ~LSoe 1& X"'~e~----~~~---+~------~--~~----+_~---+------t------IFe~~O- I~ 10 HSX.STS !> QJ1 ..... ~~t;1-9_H------...~--""f. L~L7q '=,. L~'4 L'!oOO ~ .,. ~ 3A. Z 58 c R. ""--10'"" R -Ci c -y.-. ~ 12 \I H~CLR------~+_------~~----+_~ ~ I L~JZ P------EX.T ~'T i6~Q~ 1\ a~ ~DS;q 1~J I) 7A L~Z,q OUTPUT LSn9 U'R LS1. LS'4 4A. ~~ ... ~ !oA SA R ~ [lit> Q.L- r3>R.~ I ~ ~ ! ry.; J W- ~~~U) 5 ~ ------~+;------_+------_i------~'~4C~~ 3 LSI! 6 PloRO't - 4~ B B 12 ~LS08~~~'!I~------_4~------.iJ~F~e.~~.~~~ L.-L.------+-'~'~<1I~______-; ______18 ------D$k-MIM ~ L-______~------,~'~~==~------~SK L------,------+------~~~'1 ~1~1------.iAi.A~M~8U~S~£EiN8~L 8-'~ 1% 4K r- ~> QMr.2 LSf!2 AR!:~K 10 ~164~~~±'------_r------______~ -PWR LOSS ...... q 9E o.~ """ e q n ~------~S~L-~~~~6~------~Hac~ ~6~--~-U 1C:1 V9~ l.C ,. (k r? LSO&' ~ il.. Q.~ 1 18 I~"" JZ.Z,.f 2A/8 I V _~ +5 QA~ "--- ~ D Q~q,----...... ItPS~ L~14 4.1K~ L.-______r- ______r-______-+____ +-~i1;>6K~~ 5 -SY5. ~T. CH:> M'L ~, ~ Wit ~ SySTeMCONTROL~,C_------______~ __ ------~------~--~--~~------<>~~C~TROL8U5 A MASTER ENG,'R NO. 310157 A PCB SCHEMATIC., CONTROLLER I LOGIC. o I 2"3-013~4-001 J..A.. SHI[ET 4 REV. 7 5 3 2 SCHEMATIC DWG, ASM 310156 (4 OF 4) CON TIOlLU/LOGIC IOAID LlGIND SllIUCIUN 1101'1 c E MTINTPE.... f H J CONTROLLEI/LOGIC Kl li£11 A n + • lo::fr ,--, A8M 811-01184 -YO \ir"~o t REV ~ W 11014~'; ~'9 DS 011 ~ '~I 0 '"12 c:::::J ...':' ":~~ 0., c• - "'1 :.I 20 ,:; II: ,IM""""",IM~'f=t(:>I""l ell ,1,.","..cOAl'ONrw r---t Ul U2 U3 U4 U" L....-.J U6 3 DDe De 3 Q DV (16 c:J 4 C13 c:::J : = tn> De CJ'l 4 rn 3: ~ D D- 0 O. D ~ D~tD 0 '"~ ~ +t s 20"2 ;1 •. § IT'O...! > .. CJ) oe I~ DaD ,nco ~ 1M D 0'" {"J ~1M 11& S01 0\ • • ..._D sO v D D 0 06 C IT o ! 7 7 • D05 1'3 •- ,----,I".' ~ o II: U 01 • Ou c::::J • Id C~O DI IPS • 112 q ~33 ',9 120 98 ~~D ~ 121 ~9 127 D CIS .. c::JC).4 ClrY § 121 @J 120 129 100 90 + +20 I ] C16 2 ~~ - 1 • o 141 :. ell * n c i' TH£SE 51GNAL DEFINITION'!> AA£. ~ Fl£FERENCE. Tl£Y ARC APP\..IC"'aL£: WHEN u&lNG ~OSTIC <»1 PC.& ASoM 3100G:.1. ". I NOICAT£'5 PCRMANE::NTLy CONN~T~ POINTS. 00 ALL OT'M£~ I .... T~It. "R£A ~ UNUIeD. D c B A DIA6NO~TIC DRJ VE SERVO READ LOGIC WRI TE I -'. ~DI.; - ~-'GNO CioND ~AMP.GND I~ 0 !a(AO.!:.IC.l -- - "U-'T 0 2 GND;e';" -i.i f-- I .v.. - T',l( 0" I 30 I ~ (iND 1 3 PQ&MP Ii'.C 104 '"VI 10. I GNOI.4.1 A£AD .•,GZ ,04 • 106 ~OI-R'l(O" 106 501 +5"'0I..~le6 5el·.\/OLT~.AGcI06 ~O~Mt\P.12\1P 10 70 1.A.'H,,, , 0 70 ' 10 70 I '0 70 HO.5£L 1 I 8 ~ I e I I e I PReAMP. IIVN 1 8 o 90· CT~A. 0 90 0 Q.-. I 0 iO WRIT£: tv"oA I 10 I I 10 I I 10 -v HD. !o£L G 10 . 10 2 "OI"'OC.OA. I 0 12 "0 I 1012 "0 I P~.~ 0 "0 PReAMP ,~VN ...... '2 'I -DTRA I 0 ' I~ I GNO I • '30 I-WR. PROT. '" , 0 13 ' :!K:RVO,!IICio Z 0 130 PR£AMP .".vl> I 14 -V I ~ I 14 I !'(A'VO. ~IG I' 14 0 I WRlT&:. 54:L 14 I • I~O -WR. PROT.' I I!\,... 5£.RVQ t..3\IN 0 I~ REC.ORD. ~~ 1 -T)([)e;1 O 16 I .wo' 16 I &£AVO.GNO 0 6 -V I WRITE. DRl~ 16 -u +R)l.OI!>IO 1701 10 170I-UNITACAOV In.' IlO,TA.C\oI8 0 17. PRCIWIP.GND IS 18 "48 AtCOAO.I>ATA 2. 18 +RTS.IO 190 I 1 .... _ 1ge I·~ \IOLT~ I lL_ 19() '+12 VO\..T. A..._ 190 1ILRVO. $IG. a ... 20 I "!OVOLT!>I~L'O I +12VOL~I-L'O I :KRVO.Gt.IO ...... lQ I tl... 210 .... 2Ie". VOLT~ I n... 210 0 210 ~RVO. 8. ~VN .. C.TSe.1 ~l2 I .SVOl.T5 I ""c::2 I TACH.~ ~l2 , 5~IlVO.~IG' 22 23 -- • DCDal ~4 230 I .~T.MOO£' ~ 0 I· ~ --t ~IT. MOOCI ~ 230 I LIN.MT" e. 024 2.30 UN. W'lT" & ~ LCNJ PROFIlL Ie. ~KCT (J'lC.) II ~ ~Ii IMI BU~ [)(PAN~ION ~T COf'jNECTOR ~Toa. '""I • (3~ PN) (:S4 "'-4) INTERNAL Pt..MJ£S (R£F') '0 NOTe I • ~ PtN~ ARC ~TED To GNO • =GND -i I~ I ~ e : ·~v (PIN 510£ VIEW) (Ii} ~ -'!N ! m 142 >',' OJ n c Ihl (Plt-J SIDE VIEW) '!lli! CD ei Ie 81 -ID ..JC ...JB ..JA II,1 CO~TROLLERI SERVO READ/ I~~ LOG\C WR'TE ":110 Iii ce....o re; ~IGNO &NO "-AMP.cNa. RI!A.O .• HI • Iro--'.'Gt..IO 2. ,. I 1 Ir.--T."'GoNO 2 1 I 2 10.... 'b, -USI 104 'b I-TlI.O 6Nb '.4 5.I&ND ...0.... 2 0. P~Io4P.""O I !L.. I 1!5 1 J., I rnPltllIloMP. NiOC 106 U -~Z, 0. 0l-Rl'-O ... S\IOL.T, e. el+5\/~'TS. 0 6 ~.''1Vpm II q, b I -uS'S I Os 0 I~' I 0. "0 I ffiP'MAMP. •z~, oe \010. $&1. ~ ql I ql I~, ~ 91 I q 0 0 1+'2.'1 -U$4,OIO () 1+'2V 1°,0 0 .saL ,0'0 I q 'b -ltv "'~"TI"'to'T-a"1 0 ''-It) -12V "b'0,2 I P-.-P. wtI 0'2 II PItUM.... VN ..... I 2 's... I. '3 -w~ P5tOTGI I 'blslER"0~1 , 'L .. 10.4 U & ..... 0 1 14 0, . '-"o.... ~ 10'. , . .,TI!, .-~ 0'4 0 PftAMP. 6vP 10 'b cs.t.IDI.'6 '~I-W~'~O'T., fo,. 'bl'S~",o.e.'1VN 10,. I!btlt~O"O.Clll.T""~ , 16 'b '-AR2.1 '7. ~O.CNO " , wtmW.CbWI I"' ,0,. .. I O~ ° 1- LI!O I 0 ,• 01 [lJ Ile(CD.o.,-. z °1• • PIIW~ QC) a "t> + ~ \/0I.'T:51 e ~e I.. 5 'VOL.TS .. 1'1 ' LO~ PROFIl.E. IMI BUS E)c'PAt-.l510N A:JqT Ie SOCKeT CO~NECTOR CONNECTOR C!)4 PIN) (J)(') ('54 PI"-l) I NOTC : UNLe~~ OTHiRW '5t: SPEClfllP. I~TER~l PlbNcS~EF.) [1] SPA~E PINS- COI-JI-JECTeO TO GROUND II THROUGH CONTROLL.ER/ L.OGIC • GIIJO , ON ...JA t.JOT U~D W~E~ OA.I"e ~'!I5~M8L.EO WIT... !!IIOIOI rn R/WPC&. e + 5\1 s. .,Je PIN5 81 'TH~c»4 120 NOMetoJCLA1'URI!. ~FE.RS TO "nlO-c ~ OR ''7%0 -co t..AooeL.S O"-lL.V. Q - 5" 4 . rn I I 1 I ..;0 PIN51 THROU6H '20 t.JOMI!NCL."TU". RtlFt!R5 TO ",,,,,o·c. ~ +12V -i OR -"'ZO·C MODeL.5 Oto.IL.Y. I) -12" o !I ~ .. "'2'"''' " I. ~ ~ ..J I > tIJ n b 143 CORVUS DEALER SERVICE INDEX CORVUS DEALER SERVICE Add-on drive cable 2.5 Groundstrap 3.6.1 Backplane/Motherboard 4.6.5, 5.6 Handling, shipping 2.3 Block, data 4.5 Headlock 2.3.1, 4.6.3, 9.6.1 Boot image 9.5.4.1 Heads, R/W 1.6, 4.5, 4.6.2 Boot procedure 4.6.6 Brake 4.6, 7.5, 7.6 IBMDOS 9.5.4.8 Burn-In program 8.5, 9.5.2, 9.6.8 Initialization, drive 9.5.4.8 BUS DIRECTION signal 5.5.1 Installation 2.4 Interface cable 2.4 Card cage 1.5 Interface PCA 5.9, 9.5.3.2, 9.5.4.7 Carriage lock 1. 5 Interleaving Specification 4.6.2 CCOS Operating System 9.5.4.8 CATALOG command 9.5.4.8 LEOs, front bezel 2.4, 3.3.1, 9.5.1 Chip (IC) 2.3 Link software 9.5.4 Connectors 5.6 Logical drives 2.5 Constellation Parameters 4.6.1 Controller diagnostics 8.4 Metal package, disassembly 6.3 Controller Firmware 3.3.2, 4.6.1, 9.5.4.5 MFM 5.4 Controller/Logic PCA 4.6.5, 5.5, 5.5.2, 5.5.3, 9.5.3.4 Microchip 4.6.2, 5.4.2, 9.5.3.6 Control signals 5.5.1 Micrologic PCA 4.6.5 Cooling 2.4 MIRROR 1.3, 1.4.2, 9.6.4 CORCOM 2.4, 3.5.2, 4.3.3 Motor, dc drive 4.6, 9.5.3.6 CP/M 9.5.4, 9.5.4.8 CRC 5.5, 5.5.3, 8.3.1, 9.5.4.3, 9.6.2, 9.6.6 Networks, local 9.5.2 Cylinder 4.5 NEWDOS Operating System 9.5.4.8 Noise, electrical 3.5.2 Daisy-chaining of drives 2.5 audible 3.6.1 Damage, shipping 2.3 NRZ 5.4 Data bus 5.5.3 Diagnostic test 2.3.2 OMNINET local network 3.4 Directory 9.5.4.8 DMA 5.5.3 Paddle board 5.8 DOS 9.5.4 PES signal 5.3.1, 5.3.2, 7.4.1 Drive diagnostics, REV A 8.8 PIO, Z-80 5.5 Drive diagnostics, REV B 8.3 Platters 1.5, 4.6 Drive error 9.5.4.1 POSITION MODE signal 5.3, 5.3.2, 7.4.1 Drive mechanism 3.6, 4.6, 9.5.3.6 Power cable 4.4 Drive parameters 2.3.2 Power fail 5.3 Power-on sequence 3.4, 9.5.3.2 Electronics, drive 6.5, 9.5.3.5 Power, quality of 3.5.2 Environmental requirements 3.5 Power supply 1.4.1, 4.3, 7.3, 9.5.3.3, 9.5.4.2, 9.6.7 Error codes 9.4 CS100 4.3.1, 7.3.2 CP129 4.3.2, 7.3.3, 9.5.3.3 Fan 4.6 CP140 4.3.3, 7.3.1 Format, bottom-level (diagnostic) 3.3.2 CP411 4.3.4, 7.3.1 data 5.2 Preamp 4.6.4, 5.7, 9.5.3.6 Fuse 2.4, 9.5.3.3 Processor port 5.6 144 CORVUS DEALER SERVICE RAM, Controller 3.3.2, 4.6.6 TARGET VELOCITY 5.3.3 Read amplifier 9.5.4.2 Temperature 3.5.3 Read procedure 5.4.1 Tools 6.2.1, 9.3 ReadlWrite PCA 4.6.4, 5.4, 5. '7, 9.5.4.2 Track 4.5 Receiving a drive 2.3 Track diagnostic program 8.7 Relative humiditv 3.5.1 Tri-Rit siQnal 5 . .1.1 Reset line 5.5.1, 9.5.3.4, 9.6.5 Troubleshooting 9.1, 9.5 Return code 5.5 Revision (A, B) L2, L5, 4.6.5 UCSD Pascal 9.5.4.8 ROM, Controller 4.6.6 Boot 5.9, 9.5.4.6 VDO Tabie 2.3.2 Voicecoil, servo 4.6.2 Seal, drive mechanism 4.6.2 Voltage, ac 2.4, 9.5.3.3 Sector 4.5 Voltage, dc 3.6.1 Seek mode 5.3 Self-test 3.3.2, 4.6.6 Warm-up time 3.5.3 Semaphore status flags 4.6.1 Winchester drive L5, L6, 3.6, 4.6 Servo 3.6.1, 5.3, 5.3.3, 7.4, 7.4.2, 9.5.3.5, 9.5.4.4, 9.6.3 Write procedure 5.4.2 Adjustment 7.4.1 PCA 4.6.5 Servo tracks 5.3.1, 9.5.3.6 Spare track table . 2.3.2, 4.6.1, 9.5.4.3 Stand-alone drives, disassembly 6.4 Static electricity 3.5.1 Status byte 5.5.3 STROBE 5.5.1 Switches, front bezel 2.4, 3.3, 3.3.2, 4.6.6 power 2.4 unit address 2.5 145 ~~orvus Systems, Inc./21 00 Corvus Drive / San.::400e, California 95124/ (408) 559-7000 / Telex 278976 ',.:.-......