Tektronix TDS3000 Series Manual de usuario

Service Manual

TDS3000 Series

Digital Phosphor Oscilloscopes

071-0382-01

This document supports firmware version 2.00

and above.

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 all safety summaries prior to

performing service.

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.

TDS3000 Series Service Manual i

Table of Contents

General Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications

Specifications 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Information

Transporting the Oscilloscope 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting Power 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing an Application Module 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing a Communication Module 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front-Panel Menus and Controls 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front-Panel Connectors 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rear-Panel Connectors 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Probe Compensation 2–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self Calibration 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation

Power Supply 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery Board 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Main Board 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display Module 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front-Panel Board 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disk Drive 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification

Test Record 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification Procedures 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustment Procedures

Required Equipment 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview of the Adjustment Process 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Signal Connections 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Factory Adjustment Procedure 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

ii TDS3000 Series Service Manual

Maintenance

Preparation 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preventing ESD 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inspection and Cleaning 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal and Installation Procedures 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 6–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting Procedure 6–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unpacking and Repacking Instructions 6–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options

Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Parts List

Electrical Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagrams

Diagrams 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mechanical Parts List

Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

TDS3000 Series Service Manual iii

List of Figures

Figure 3–1: TDS3000 series block diagram 3–1. . . . . . . . . . . . . . . . . . . . .

Figure 6–1: Pulling the hub pin 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–2: Releasing the hub assembly 6–9. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–3: Reinstalling a hub cover 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–4: Communication module guide 6–12. . . . . . . . . . . . . . . . . . . . . .

Figure 6–5: Flex cable to the disk drive 6–13. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–6: Removing the bezel from a new disk drive 6–14. . . . . . . . . . . .

Figure 6–7: Cables to the main board 6–15. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–8: Installing the fan, line filter, and line power cable 6–17. . . . . .

Figure 6–9: Installing the line filter and line power cable 6–18. . . . . . . . . .

Figure 6–10: Disk drive and display module cable connectors 6–20. . . . . .

Figure 6–11: Main Board 6–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–12: Front chassis 6–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–13: Display module 6–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–14: Front-panel cable routing 6–25. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–15: Disconnect back light cables 6–26. . . . . . . . . . . . . . . . . . . . . .

Figure 6–16: Remove inverter board 6–27. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–17: Remove display from display chassis 6–28. . . . . . . . . . . . . . .

Figure 6–18: Remove back light tube 6–29. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–19: Installing display glass shield 6–30. . . . . . . . . . . . . . . . . . . . . .

Figure 6–20: Remove front-panel knobs 6–31. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–21: Remove front-panel board 6–32. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–22: Remove front-panel keypads 6–33. . . . . . . . . . . . . . . . . . . . . .

Figure 6–23: Checking front-panel lock nuts 6–34. . . . . . . . . . . . . . . . . . . .

Figure 6–24: Primary troubleshooting procedure 6–36. . . . . . . . . . . . . . . .

Figure 6–25: Power-on troubleshooting procedure 6–37. . . . . . . . . . . . . . .

Figure 6–26:AC power supply troubleshooting procedure 6–38. . . . . . . . .

Figure 6–27: Battery module troubleshooting procedure 6–39. . . . . . . . . .

Figure 6–28: Front panel/display backlight power troubleshooting 6–40.

Figure 6–29: Display/Main module supply voltage troubleshooting 6–41.

Figure 6–30: No display, power supply voltages OK 6–41. . . . . . . . . . . . . .

Figure 6–31: Module isolation troubleshooting procedure 6–42. . . . . . . . .

Table of Contents

iv TDS3000 Series Service Manual

Figure 10–1: Exploded view, front case half 10–4. . . . . . . . . . . . . . . . . . . . .

Figure 10–2: Exploded view, LCD display 10–6. . . . . . . . . . . . . . . . . . . . . .

Figure 10–3: Exploded view, main board and disk drive 10–8. . . . . . . . . .

Figure 10–4: Exploded view, circuit board assembly and fan 10–10. . . . . . .

Figure 10–5: Exploded view, rear case half 10–12. . . . . . . . . . . . . . . . . . . . . .

Table of Contents

TDS3000 Series Service Manual v

List of Tables

Table 1–1: Specifications 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 6–1: Internal inspection check list 6–3. . . . . . . . . . . . . . . . . . . . . . .

Table 6–2: Removal and installation procedures 6–6. . . . . . . . . . . . . . . . .

Table 7–1: TDS3000 Series options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

vi TDS3000 Series Service Manual

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