Tektronix TLA 700 Series User manual

Service Manual
TLA 700 Series Logic Analyzer Modules
TLA 7Lx & TLA 7Mx
070-9779-02
This document supports module firmware version
1.00 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.

Copyright 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.
MagniVu and PowerFlex are registered trademarks of Tektronix, Inc.

WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship
for a period of one (1) year from the date of shipment. If a 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; c) to repair any damage or malfunction
caused by the use of non-Tektronix supplies; or d) 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 IN LIEU OF ANY OTHER WARRANTIES, EXPRESS 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.

TEKTRONIX SERVICE OPTIONS
Tektronixoffersthefollowingserviceoptions.Theseoptionsaremodular,flexible, andeasyto orderwithyour instru-
ment. Designed to ease installation and start up, to support tracking of calibration to requirements of ISO9000, and
to provide for extended repair coverage, these options help fix your long-term maintenance costs and eliminate un-
planned expenditures. And these options can be converted from service at Tektronix service depots to service on-site
(see Option S3), which helps keep downtime to a minimum.
Product installation service1Option IN Provides initial installation of the product and
familiarizes new users with some of its opera-
tion features
Three years of calibration services Option C3 Provides initial Certification on delivery, plus
two more annual calibrations from your ser-
vice center
Test data Option D3 Provides test data on delivery and when annu-
al calibration services are provided (three to-
tal, requires Option C3)
Three years repair coverage Option R3 Provides three years of repair coverage for the
instrument, including displays and accessories
sold with the instrument
One year uplift to on–site service1,2 Option S1 Converts the standard one year, “return to de-
pot” warranty to provide service on site for
one year
Three year uplift to on-site service1,2 Option S3 Converts any C3, D3, and R3 options pur-
chased to on-site services for three years
Tektronix Service Options are available at the time you order your instrument. Contact your local Tektronix Sales
Office for more information.
1Availability of installation and on-site services depends on the type of product and may vary by geography.
2Uplift options are ordered with the mainframe products and cover individual modules.

TLA 700 Series Logic Analyzer Modules Service Manual i
Table of Contents
General Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Structure xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Conventions xii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Manuals xiv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment and Certification Interval xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strategy for Servicing xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Offerings xvi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contacting Tektronix xviii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Characteristic Tables 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information
Installation 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Logical Address 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Merging Modules 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Connectors and Indicators 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Merge Cable Connectors 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Connectors 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probes 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Online Help 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostics 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self Calibration 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Overview 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory of Operation
Block Level Description 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Processor Unit Board 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquisition Board 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daughter Boards 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probes 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Merged Modules 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification Procedures

Table of Contents
ii TLA 700 Series Logic Analyzer Modules Service Manual
Adjustment Procedures
Maintenance
Related Maintenance Procedures 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventing ESD 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Care 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning Procedures 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation Procedures 6–7. . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation — Please Read 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Circuit Boards 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of Procedures 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tools Required 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Injector/Ejector Handles 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cover 6–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daughter Boards 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Processor Unit Board 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquisition Board 6–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses 6–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P6417 Probe Podlet Replacement 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear EMI Gaskets 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Level 6–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Documents 6–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check for Common Problems 6–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Eliminate Other Problem Sources 6–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Substitute a Good Module 6–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check the Mainframe 6–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe-Level Troubleshooting 6–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshoot the Logic Analyzer Module 6–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 6–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 6–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Isolation Procedure 6–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Primary Troubleshooting Chart 6–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Tests Table 6–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment After Repair 6–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview of Procedures 6–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
TLA 700 Series Logic Analyzer Modules Service Manual iii
Repackaging Instructions 6–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packaging 6–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage 6–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options
Replaceable Electrical Parts
Diagrams
Replaceable Mechanical Parts
Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
iv TLA 700 Series Logic Analyzer Modules Service Manual
List of Figures
Figure 2–1: Logical address switches 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: Front panel of the logic analyzer module 2–4. . . . . . . . . . . . .
Figure 2–3: Typical system window 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–1: Injector/ejector handle replacement 6–9. . . . . . . . . . . . . . . . .
Figure 6–2: Cover removal 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–3: Feeding the merge cable through the cover 6–12. . . . . . . . . . .
Figure 6–4: Seating the cover on the chassis 6–13. . . . . . . . . . . . . . . . . . . . .
Figure 6–5: Daughter board replacement 6–15. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–6: LPU board removal 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–6: LPU board removal 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–7: Inserting LPU board tabs into front subpanel 6–18. . . . . . . . .
Figure 6–8: Crimping the interconnect cables 6–19. . . . . . . . . . . . . . . . . . .
Figure 6–9: Removing the cables from the Acquisition board 6–21. . . . . .
Figure 6–10: Removing the Merge cable connector from the chassis 6–22
Figure 6–11: Removing the Acquisition board from the chassis 6–23. . . . .
Figure 6–12: Fuse replacement 6–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–13: Rear EMI gasket removal 6–27. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–14: Rear EMI gasket replacement 6–27. . . . . . . . . . . . . . . . . . . . .
Figure 6–15: Primary troubleshooting chart 6–37. . . . . . . . . . . . . . . . . . . .
Figure 9–1: Interconnections 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9–2: Block diagram 9–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–1: TLA7L1 and TLA7M1 Logic Analyzer Module
exploded view 10–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–2: TLA7L2 and TLA7M2 Logic Analyzer Module
exploded view 10–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–3: TLA7L3 and TLA7M3 Logic Analyzer Module
exploded view 10–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–4: TLA7L4 and TLA7M4 Logic Analyzer Module
exploded view 10–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–5: P6417 Probe exploded view 10–21. . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
TLA 700 Series Logic Analyzer Modules Service Manual v
List of Tables
Table 1–1: Logic analyzer module variations 1–1. . . . . . . . . . . . . . . . . . .
Table 1–2: Channel width and depth 1–2. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–3: Clocking 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–4: Trigger system 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–5: Input parameters (with P6417 Probe) 1–7. . . . . . . . . . . . . . . .
Table 1–6: MagniVu feature 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–7: Merged modules 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–8: Data handling 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–9: Atmospherics 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–10: Mechanical 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–11: Certifications and compliances 1–9. . . . . . . . . . . . . . . . . . . . .
Table 2–1: Logic analyzer module variations 2–5. . . . . . . . . . . . . . . . . . .
Table 3–1: Local Processor Unit board fuses 3–3. . . . . . . . . . . . . . . . . . . .
Table 3–2:Acquisition board fuses 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–1: External inspection check list 6–3. . . . . . . . . . . . . . . . . . . . . . .
Table 6–2: Internal inspection check list 6–4. . . . . . . . . . . . . . . . . . . . . . .
Table 6–3: Tools required for circuit board replacement 6–8. . . . . . . . . .
Table 6–4: Failure symptoms and possible causes 6–29. . . . . . . . . . . . . . . .
Table 6–5: Diagnostic tests 6–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–6: Requirements after replacement 6–38. . . . . . . . . . . . . . . . . . . .
Table 6–7: Troubleshooting overview 6–39. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–1: TLA7L1, TLA 7L2, TLA 7L3, and TLA 7L4 options 7–1. . .
Table 7–2: TLA 7M1, TLA 7M2, TLA 7M3, and TLA 7M4 options 7–1.

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vi TLA 700 Series Logic Analyzer Modules Service Manual

TLA 700 Series Logic Analyzer Modules Service Manual vii
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the instrument.
Ground the Product. This product is indirectly grounded through the grounding
conductor of the mainframe power cord. To avoid electric shock, the grounding
conductor must be connected to earth ground. Before making connections to the
input or output terminals of the product, ensure that the product is properly
grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and marking on the product. Consult the product manual for further ratings
information before making connections to the product.
The common terminal is at ground potential. Do not connect the common
terminal to elevated voltages.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/DampConditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
To Avoid Fire or
Personal Injury

General Safety Summary
viii TLA 700 Series Logic Analyzer Modules Service Manual
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
ProtectiveGround
(Earth)Terminal CAUTION Refer to Manual Double Insulated
WARNING
High Voltage
Symbols and Terms

TLA 700 Series Logic Analyzer Modules Service Manual ix
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, disconnect the main power by means
of the power cord or, if provided, the power switch.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.

Service Safety Summary
x TLA 700 Series Logic Analyzer Modules Service Manual

TLA 700 Series Logic Analyzer Modules Service Manual xi
Preface
This is the service manual for the TLA 7Lx/TLA 7Mx Logic Analyzer Module.
Read this preface to learn how this manual is structured, what conventions it
uses, and where you can find other information related to servicing this product.
Read the Introduction, which follows this preface, for safety and other important
background information needed before using this manual for servicing this
product.
Manual Structure
The TLA 7Lx/TLA 7Mx Logic Analyzer Module Service Manual is divided into
chapters, which are made up of related subordinate topics. These topics can be
cross referenced as sections.
Be sure to read the introductions in the sections and subsections because they
contain information that you will need to do the service correctly and efficiently.
A brief description of each chapter follows:
Specifications contains a product description of the TLA 7Lx/TLA 7Mx
Logic Analyzer Module and tables of the characteristics and descriptions that
apply to it.
Operating Information includes basic installation and operating instructions
at the level needed to safely operate and service the TLA 7Lx/TLA 7Mx
Logic Analyzer Module. For complete installation and configuration
procedures, refer to the TLA 700 Series Installation Manual. Instructions for
shipping the module are also found in this chapter.
Theory of Operation contains circuit descriptions that support general service
to the circuit board level.
Performance Verification refers you to the TLA 700 Series Performance
Verification and Adjustment Technical Reference Manual that contains the
performance verification procedures for the TLA 7Lx/TLA 7Mx Logic
Analyzer Module and for other major components in the TLA 700 Series
Logic Analyzer.
Adjustment Procedures refer you to the TLA 700 Series Performance
Verification and Adjustment Technical Reference Manual that contains the
adjustment procedures for the TLA 7Lx/TLA 7Mx Logic Analyzer Module
and for other major components in the TLA 700 Series Logic Analyzer.

Preface
xii TLA 700 Series Logic Analyzer Modules Service Manual
Maintenance contains information and procedures for doing preventive and
corrective maintenance on the TLA 7Lx/TLA 7Mx Logic Analyzer Module.
Included are instructions for cleaning, for removal and installation of
replaceable parts, and for troubleshooting to the circuit board level.
Options contains information on servicing any of the factory-installed
options that may be available for the TLA 7Lx/TLA 7Mx Logic Analyzer
Module.
Diagrams contains block diagrams and interconnection diagrams that are
useful when isolating failed circuit boards.
Mechanical Parts List includes a table of all replaceable parts, their
descriptions, and their Tektronix part numbers.
Manual Conventions
This manual uses certain conventions that you should become familiar with
before attempting service.
The acquisition board is one of the circuit boards inside the TLA 7Lx/TLA 7Mx
Logic Analyzer Module. The circuit board receives and stores acquisition data
from the probes and works with the LPU board to provide logic analysis
information to the operator of the TLA 700 Series Logic Analyzer.
Adjustment procedures check for, and if necessary, correct any adjustment errors
discovered when performing functional or performance verification procedures.
Adjustment procedures are documented in the TLA 700 Series Performance
Verification and Adjustment Technical Reference Manual.
The adjustment/verification fixture is a test fixture used to perform the adjust-
ment, functional check, and performance verification procedures. Specifications
and replaceable parts information are documented in this service manual. The
procedures for using the test fixture are documented in the TLA 700 Series
Performance Verification and Adjustment Technical Reference Manual.
Certification procedures are used to certify a product and provide a traceability
path to national standards. These procedures are documented in the TLA 700
Series Performance Verification and Adjustment Technical Reference Manual.
The daughter board provides additional channels for the TLA 700 Series Logic
Analyzer. Data from these channels is sent to the acquisition board for proces-
sing with other data from the acquisition board.
Acquisition Board
Adjustment Procedures
Adjustment/Verification
Fixture
Certification Procedures
Daughter Board

Preface
TLA 700 Series Logic Analyzer Modules Service Manual xiii
Functional verification procedures verify the basic functionality of the main-
frame and the module inputs, outputs, and basic logic analyzer actions. These
procedures include power-on and extended diagnostics, self calibration, as well
as semi-automated or manual check procedures. These procedures can be used as
incoming inspection purposes. This manual only provides information on
power-on and extended diagnostics and the self calibration. Other functional
verification procedures are provided in the TLA 700 Series Performance
Verification and Adjustment Technical Reference Manual.
The Local Processor Unit (LPU) Board. The LPU board is one of the circuit
boards inside the TLA 7Lx/TLA 7Mx Logic Analyzer Module that provides the
main communications interface with the TLA 700 Series Logic Analyzer
mainframe.
Maintenance procedures are used for fault isolation and repair to the circuit board
level or to the replaceable part level.
Throughout this manual, the term module refers to a TLA 700 Series Logic
Analyzer or DSO unit that mounts inside a TLA 700 Series Portable or Benchtop
Mainframe. A module is composed of circuit cards, interconnecting cables, and a
user-accessible front panel.
Performance verification procedures confirm that a product meets or exceeds the
performance requirements for each of the published specifications. These
procedures are documented in the TLA 700 Series Performance Verification and
Adjustment Technical Reference Manual.
This manual refers to any field-replaceable assembly or mechanical part
specifically by its name or generically as a replaceable part. In general, a
replaceable part is any circuit board or assembly, such as the hard disk drive, or a
mechanical part, such as the I/O port connectors, that is listed in the replaceable
parts list.
Symbols and terms related to safety appear in the Safety Summary found at the
beginning of this manual.
Functional Verification
Procedures
LPU Board
Maintenance Procedures
Modules
Performance Verification
Procedures
Replaceable Parts
Safety

Preface
xiv TLA 700 Series Logic Analyzer Modules Service Manual
Related Manuals
The following manuals are available as part of the TLA 700 Series Logic
Analyzer documentation set. (See Standard Accessories and Optional Accesso-
ries on page 10–20 for part numbers.)
The procedures and information in this manual assumes that service personnel
have access to all manuals listed in the following table, except for the TLA 7QS
(Quick Start) manuals.
Manual Name Description Service Use
The TLA700 Series Installation Manual Providesthebasicinstallationinstructions
for the TLA700 Series Logic Analyzer. Installation and removal of DSO, Logic Analyzer,andBenchtop-ControllerModules
Replacing individual podlet cables in the
logicanalyzerprobes
Reformatting the hard disk
Reinstallation of Windows 95 and TLA 700
software
The TLA700 Series Performance Verifica-
tion and Adjustment Technical Reference
Manual
Providesperformanceverification,certifica-
tion, and adjustment procedures for the
TLA700 Series Logic Analyzer.
Performingperiodicorafter-repairfunction-
al or performance verifications, or calibra-
tionandcertification
Performingperiodicorafter-repairadjust-
ment
The TLA700 Series User Manual and TLA
700 Online Help Providesoperatinginformationonthe TLA700 Series Logic Analyzer. Augmentsoperatinginformationfoundin chapter 2 of this manual.
The TLA711 Color Benchtop Chassis
ServiceManual Provides service information for the benchtopchassis. Isolating and correcting failures in the benchtopchassis
The TLA711 Color Benchtop Controller
ServiceManual Provides service information for the slot 0 controller in the benchtop chassis. Isolating and correcting failures in the benchtopcontroller
The TLA704 Color Portable Mainframe
ServiceManual Provides service information for the portablemainframe. Isolating and correcting failures in the portablemainframe
The TLA7Dx/TLA 7Ex Digitizing Oscillo-
scopeServiceManual Provides service information for the digitizingoscilloscopemodules. Isolating and correcting failures in the DSO module
The TLA7QS TrainingManual Provides examples of using the TLA
QuickStart training board with TLA700
SeriesLogicAnalyzers.
None
The TLA7QS Technical ReferenceManual Providesserviceinformationandtechnical
information for the TLA QuickStart Training
board.
Servicing the TLA Quickstart Training board
only.

TLA 700 Series Logic Analyzer Modules Service Manual xv
Introduction
This manual contains information needed to properly service the TLA 7Lx/
TLA 7Mx Logic Analyzer Module, as well as general information critical to safe
and effective servicing.
To prevent personal injury or damage to the TLA 7Lx/TLA 7Mx Logic Analyzer
Module, consider the following requirements before attempting service:
The procedures in this manual should be performed only by a qualified
service person.
Read the General Safety Summary and Service Safety Summary found at the
beginning of this manual.
Read the Preface beginning on page xi.
Read Operating Information beginning on page 2–3.
When using this manual for servicing, be sure to follow all warnings, cautions,
and notes.
Adjustment and Certification Interval
Generally, you should perform the adjustments and certification (calibration)
described in the TLA 700 Series Performance Verification and Adjustment
Technical Reference Manual once per year or following repairs that affect
adjustment or calibration.
Strategy for Servicing
This manual contains the information needed for periodic maintenance and
service of the TLA 7Lx/TLA 7Mx Logic Analyzer Module.
This manual also supports and contains information for corrective maintenance
of this product:
supports isolation of faults to the failed circuit board or assembly level
shown in the replaceable parts list
supports removal and replacement of those boards or assemblies
supports removal and replacement of fuse, knobs, chassis, and other
mechanical parts listed in the replaceable parts list
This manual does not support component-level fault isolation and replacement.

Introduction
xvi TLA 700 Series Logic Analyzer Modules Service Manual
Service Offerings
Tektronix provides service to cover repair under warranty as well as other
services that are designed to meet your specific service needs.
Whether providing warranty repair service or any of the other services listed
below, Tektronix service technicians are well equipped to service the TLA 7Lx/
TLA 7Mx Logic Analyzer Module. Tektronix technicians train on Tektronix
products; they have access to the latest information on improvements to the
TLA 7Lx/TLA 7Mx Logic Analyzer Module as well as the latest new product
upgrades. Services are provided at Tektronix Services Centers and on-site at your
facility, depending on your location.
Tektronix warrants this product for one year from date of purchase. (The
warranty appears behind the title page in this manual.) Tektronix technicians
provide warranty service at most Tektronix service locations worldwide. The
Tektronix product catalog lists all service locations worldwide or you can visit us
on our Customer Services World Center web site at http://www.tek.com/Mea-
surement/Service. See our latest service offerings and contact us by email.
In addition to warranty repair, Tektronix Service offers calibration and other
services which provide cost-effective solutions to your service needs and quality-
standards compliance requirements. Our instruments are supported worldwide by
the leading-edge design, manufacturing, and service resources of Tektronix to
provide the best possible service.
The following services can be tailored to fit your requirements for calibration
and/or repair of the TLA 7Lx/TLA 7Mx Logic Analyzer Module.
Service Options. Tektronix Service Options can be selected at the time you
purchase your instrument. You select these options to provide the services that
best meet your service needs. These service options are listed on the Tektronix
Service Options page following the title page of this manual.
Service Agreements. If service options are not added to the instrument purchase,
then service agreements are available on an annual basis to provide calibration
services or post-warranty repair coverage for the TLA 7Lx/TLA 7Mx Logic
Analyzer Module. Service agreements may be customized to meet special
turn-around time and/or on-site requirements.
Service on Demand. Tektronix also offers calibration and repair services on a
“per-incident” basis that is available with standard prices for many products.
Warranty Repair Service
Calibration and Repair
Service