Service Manual TDS 520B, 540B, 620B, TDS 644B, TDS 680B, TDS 684B, TDS 724A, TDS 744A, & TDS 784A Digitizing Oscilloscope 07
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Service Manual TDS 520B, 540B, 620B, TDS 644B, TDS 680B, TDS 684B, TDS 724A, TDS 744A, & TDS 784A Digitizing Oscilloscope 070-9386-03 Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so. Refer to the Safety Summary prior to performing service. Copyright E Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc. WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations. This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product. THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. Table of Contents General Safety Summary. ix Service Safety Summary. xiii Preface. xv Introduction. xix Specifications Product Description. 1–1 User Interface. 1–2 Signal Acquisition System. 1–2 Horizontal System. 1–3 Trigger System. 1–4 Acquisition Control. 1–5 On-Board User Assistance. 1–5 Measurement Assistance. 1–5 Storage. 1–6 I/O . 1–6 Display. 1–7 Nominal Traits. 1–9 Warranted Characteristics. 1–15 Typical Characteristics. 1–23 Operational Information Installation. 2–1 Supplying Operating Power. 2–1 Operating Environment. 2–3 Applying and Interrupting Power. 2–3 Repackaging Instructions. 2–4 Installed Options. 2–5 Operating Instructions. 2–7 Screen Layout. 2–7 Basic Procedures. 2–7 Theory of Operation Logic Conventions. 3–1 Module Overview. 3–1 Performance Verification Performance Verification Procedures. 4–1 Conventions. 4–2 Brief Procedures. 4–5 Self Tests. 4–5 Functional Tests. 4–7 TDS 500B, 600B and TDS 700A Service Manual i Table of Contents Performance Tests. 4–15 Prerequisites. 4–15 Equipment Required. 4–16 TDS 600B Test Record. 4–19 TDS 500B/700A Test Record. 4–23 Signal Acquisition System Checks. 4–27 Time Base System Checks. 4–43 Trigger System Checks. 4–45 Output Signal Checks. 4–58 Option 05 Video Trigger Checks. 4–67 Sine Wave Generator Leveling Procedure. 4–84 Adjustment Procedures Requirements for Performance. 5–1 Usage . 5–2 Equipment Required. 5–5 Adjustment Instructions. 5–7 Probe Adjustment for the P6139A Probe. 5–10 Display Assembly Adjustment. 5–21 Maintenance Related Maintenance Procedures. 6–1 Preparation. 6–2 Inspection and Cleaning. 6–4 Removal and Installation Procedures. 6–9 Preparation — Please Read. 6–9 Access Procedure. 6–15 Procedures for External Modules. 6–16 Procedures for Outer-Chassis Modules. 6–29 Procedures for Inner-Chassis Modules. 6–46 Disassembly for Cleaning. 6–53 Troubleshooting. 6–57 Diagnostics. 6–57 Firmware Updates. 6–58 Options and Accessories Electrical Parts List Diagrams Mechanical Parts LIst ii TDS 500B, 600B and TDS 700A Service Manual Table of Contents List of Figures Figure 2–1: Map of Display Functions. 2–8 Figure 4–1: Map of Display Functions. 4–3 Figure 4–2: Verifying Adjustments and Signal-Path Compensation. 4–6 Figure 4–3: Universal Test Hookup for Functional Tests – TDS 600B Shown. ..