Super Multi DVD Drive SE R VICE MANUAL MODEL: GSA-4165B/ GS A - 4 1 6 7 B / GS A - 4 1 6 8 B P/NO : 3828HS1047G August 2005 Printed in Korea MODEL : GSA-4165B/GSA-4167B/GSA-4168B TABLE OF CONTENTS INTRODUCTION .......................................................................................................................................................................3 FEATURES............................................................................................................................................................................3~5 SPECIFICATIONS.................................................................................................................................................................6~9 LOCATION OF CUSTOMER CONTROLS .......................................................................................................................10~11 DISASSEMBLY.................................................................................................................................................................12~13 1. CABINET and CIRCUIT BOARD DISASSEMBLY ..........................................................................................................12 1-1. Bottom Chassis..........................................................................................................................................................12 1-2. Front Bezel Assy........................................................................................................................................................12 1-3. Cabinet and Main Circuit Board .................................................................................................................................12 2. MECHANISM ASSY DISASSEMBLY..............................................................................................................................12 2-1. Pick-up Unit................................................................................................................................................................12 2-2. Pick-up ......................................................................................................................................................................13 EXPLODED VIEW.............................................................................................................................................................14~15 MECHANICAL REPLACEMENT PARTS LIST ................................................................................................................16~18 GLOSSARY.............................................................................................................................................................................19 THE DIFFERENCES OF CD-R/CD-RW DISCS AND GENERAL CD-ROM.....................................................................20~26 1. Recording Layer ..............................................................................................................................................................20 2. Disc Specification ............................................................................................................................................................20 3. Disc Materials..................................................................................................................................................................21 4. Reading Process of Optical Disc.....................................................................................................................................22 5. Writing Process of CD-R Disc .........................................................................................................................................23 6. Writing Process of CD-RW Disc......................................................................................................................................23 7. Organization of the PCA, PMA and Lead-in Area ...........................................................................................................24 8. Function of PCA and PMA area ......................................................................................................................................25 9. OPC and ROPC ..............................................................................................................................................................25 10. Writing Process of DISC................................................................................................................................................26 THE DIFFERENCES OF DVD-R/RW, DVD+R/RW DISCS AND DVD-ROM....................................................................27~35 1. Recording Layer ..............................................................................................................................................................27 2. Disc Specification ............................................................................................................................................................28 3. Disc Materials..................................................................................................................................................................28 4. Writing Pulse Waveform of DVD+R.................................................................................................................................31 5. Writing Pulse Waveform DVD+RW .................................................................................................................................33 6. Organization of Inner Drive Area, Outer Drive Area, Lead-in Zone and Lead-out Zone .................................................34 LightScribe MEDIA...........................................................................................................................................................36~39 1. LightScribe Media............................................................................................................................................................36 2. Hardware Block Diagram of LightScribe Label Printing...................................................................................................37 3. MD Assy For LightScribe.................................................................................................................................................38 4. Optical Encoder Assy ......................................................................................................................................................39 DVD & CD DATA PROCESSING......................................................................................................................................40~43 1. Data Processing Flow......................................................................................................................................................40 2. Copy Protection and Regional Code Management Block ...............................................................................................41 3. About Prevention the DVD-ROM from to be copy...........................................................................................................42 4. About the DVD-ROM Regional Code ..............................................................................................................................43 INTERNAL STRUCTURE OF THE PICK-UP....................................................................................................................44~46 1. Block Diagram of the Pick-up(HOP-7632TS) ..................................................................................................................44 2. Pick up Pin Assignment...................................................................................................................................................45 3. Signal detection of the P/U..............................................................................................................................................46 DESCRIPTION OF CIRCUIT.............................................................................................................................................47~53 1. ALPC Circuit....................................................................................................................................................................47 2. Focus Circuit....................................................................................................................................................................49 3. Tracking & Sled Circuit....................................................................................................................................................50 4. Spindle Circuit .................................................................................................................................................................53 MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION.............................................................................55~72 TROUBLESHOOTING GUIDE ..........................................................................................................................................73~90 BLOCK DIAGRAM ..................................................................................................................................................................91 PRINTED CIRCUIT BOARD DIAGRAM ...........................................................................................................................92~96