Tektronix TLA7AC Series Service Manual
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Tektronix TLA7AC Series Service Manual

Tektronix TLA7AC Series Service Manual

Logic analyzer module
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TLA7ACx
xx
Tektronix Logic Analyzer Module
ZZZ
Service Manual
This document applies to TLA application software version 5.6
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.
www.tektronix.com
077-0158-00

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  • Page 1 TLA7ACx Tektronix Logic Analyzer Module Service Manual This document applies to TLA application software version 5.6 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.

  • Page 2: Contacting Tektronix

    Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material.
  • Page 3 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.

  • Page 5: Table Of Contents

    Table of Contents General Safety Summary ..................Service Safety Summary..................Preface ......................Related Documentation ..................Manual Conventions................... Introduction ......................Strategy for Servicing ..................Service Offerings ..................... Performance Verification Procedures................Test Equipment....................Threshold Accuracy Test..................Setup and Hold ....................Test Fixtures ....................Threshold Accuracy Test Fixture ................
  • Page 6 Table of Contents Adjustment After Repair ..................Updating or Restoring the Logic Analyzer Firmware ............ Repackaging Instructions ..................Packaging ...................... Shipping to the Service Center ................Storage ......................Parts List......................Parts Ordering Information .................. Using the Replaceable Parts List................TLA7ACx Logic Analyzer Module Service Manual...
  • Page 7 List of Figures Figure 1: Setting trigger parameters................Figure 2: Set the trigger states ..................Figure 3: Threshold Accuracy test fixture ............... Figure 4: Solder square pins to the SMA connector ............Figure 5: Solder the SMA connectors together ..............Figure 6: Completed fixture with termination and coupler ...........

  • Page 8: List Of Tables

    Table of Contents List of Tables Table 1: External inspection check list................Table 2: Internal inspection checklist ................Table 3: Tools required for circuit board replacement............Table 4: Failure symptoms and possible causes..............Table 5: Diagnostic tests..................Table 6: Requirements after replacement ............... TLA7ACx Logic Analyzer Module Service Manual...

  • Page 9: General Safety Summary

    General Safety Summary 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 a larger system.
  • Page 10 General Safety Summary 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. Symbols and Terms on the These terms may appear on the product: Product DANGER indicates an injury hazard immediately accessible as you read...

  • Page 11: Service Safety Summary

    Service Safety Summary 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.
  • Page 12 Service Safety Summary viii TLA7ACx Logic Analyzer Module Service Manual...

  • Page 13: Preface

    XYZs of Logic Analyzers Logic analyzer basics Declassification and Securities Data security concerns specific to instructions sanitizing or removing memory devices from Tektronix products Application notes Collection of logic analyzer application specific notes Product Specifications & Performance TLA Product specifications and Verification Procedures...

  • Page 14: Manual Conventions

    Preface Manual Conventions This manual uses certain conventions that you should be familiar with before attempting service. Acquisition Board The acquisition board is one of the circuit boards inside the logic analyzer module. The circuit board receives and stores acquisition data from the probes and works with the local processor unit (LPU) board to provide logic analysis information to the operator of the logic analyzer.

  • Page 15: Introduction

    This manual does not support component-level fault isolation and replacement. 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 logic analyzer module.

  • Page 16: Service Options

    Introduction Warranty Repair Service 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 web site at http://www.tektronix.com/Measurement/Service.

  • Page 17: Performance Verification Procedures

    DC signal generator and precision digital voltmeter Logic analyzer probe One required P6810 Data Timing Generator Tektronix DTG 524 with a DTGM30 Output Module Test fixture, Threshold One required Refer to Threshold Accuracy Accuracy Test Fixture. (See page 9.)
  • Page 18 Performance Verification Procedures Test Equipment Setup Connect a P6810 probe from the logic analyzer to the voltage source, using the Threshold Accuracy test fixture. If the voltage source does not have the required output accuracy, use a multimeter with the required accuracy to verify the voltage output levels specified in the procedure.

  • Page 19: Figure 1: Setting Trigger Parameters

    Performance Verification Procedures Figure 1: Setting trigger parameters TLA7ACx Logic Analyzer Module Service Manual...

  • Page 20: Verification Procedure

    Performance Verification Procedures Verification Procedure Complete the following steps to complete this procedure. Record the results on the copy of the Calibration Data Sheet. 1. Go to the Setup window of the logic analyzer and set the probe threshold voltages to 4 V. 2.

  • Page 21: Setup And Hold

    Performance Verification Procedures Setup and Hold This procedure verifies the setup and hold specifications of the logic analyzer. Equipment required Tektronix DTG 524 Data Timing Generator with a DTGM30 Output Module Precision BNC cable Setup and Hold test fixture Prerequisites...
  • Page 22 Performance Verification Procedures TLA7000 Setup 1. Start the TLA Application and open the Setup Window. 2. Click the DM button to default the module. 3. Click on the Synchronous tab and set the following parameters: a. Clock Signal: Choose the clock that you connected the DTG output to. b.

  • Page 23: Figure 2: Set The Trigger States

    Performance Verification Procedures Trigger Logic. To complete the setup, you must configure a trigger to occur whenever the two data lines are neither 00 nor 11 (binary). This will capture the condition when the two data signals are 01 or 10, as they transition to their common values.
  • Page 24 Performance Verification Procedures Verification Procedure Complete the following steps to complete this procedure. Record the results on the Calibration Data Sheet. 1. Set the DTG sequencer to RUN and the outputs ON. 2. Press the RUN button on the TLA and wait a few seconds to verify that it doesn’t trigger.

  • Page 25: Test Fixtures

    Performance Verification Procedures Test Fixtures To complete the procedures in this section, you need to build the Threshold Accuracy test fixture and the Setup and Hold test fixture. Threshold Accuracy Test Fixture Use this fixture to gain access to the logic analyzer probe pins. The fixture connects all ground pins together, and all signal pins together.

  • Page 26: Setup And Hold Test Fixture

    Performance Verification Procedures Setup and Hold Test Fixture This fixture provides square-pin test points for logic analyzer probes when they are used to probe in-line SMA connections. Note that you need a minimum of two test fixtures to complete the procedure. Equipment Required You will need the following items to build the test fixture: Item...

  • Page 27: Figure 5: Solder The Sma Connectors Together

    Performance Verification Procedures 5. Align the second SMA connector to the first as shown and solder the center conductors of the connectors together. (See Figure 5.) Figure 5: Solder the SMA connectors together 6. Solder the ground conductors of the SMA connectors together. 7.
  • Page 28 Performance Verification Procedures TLA7ACx Logic Analyzer Module Service Manual...

  • Page 29: Maintenance

    Maintenance This section contains the information needed for periodic and corrective maintenance of the Logic Analyzer Modules. The following sections are included. This Maintenance section provides general information on preventing damage to internal circuit boards when doing maintenance, procedures for inspecting the logic analyzer module, and cleaning external and internal circuit boards.

  • Page 30: Inspection And Cleaning

    Maintenance Minimize handling of static-sensitive modules. Transport and store static-sensitive modules in their static protected containers. Label any package that contains static-sensitive modules. Wear a grounded antistatic wrist strap while handling these modules. Service static-sensitive modules only at a static-free work station. Nothing capable of generating or holding a static charge should be allowed on the work surface.

  • Page 31: Exterior Inspection

    Use a 75% isopropyl alcohol solution to clean internal surfaces and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative. Exterior Inspection Inspect the outside of the instrument for damage, wear, and missing parts using the following table as a guide.

  • Page 32: Interior Inspection

    Maintenance Interior Inspection Inspect the internal portions of the logic analyzer module for damage and wear using the following table as a guide. When found, defects should be repaired immediately. If you must replace an internal component, refer to the Removal and Installation Procedures.
  • Page 33 Maintenance Interior Cleaning To clean the interior, perform the following steps: Procedure 1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi). 2. Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol (75% solution) and rinse with warm deionized water. (A cotton-tipped applicator is useful for cleaning in narrow spaces and on circuit boards.) NOTE.

  • Page 34: Cleaning The P6864, P6880, P6960, And P6980 Compression Footprints

    Maintenance Cleaning the P6864, P6880, P6960, and P6980 Compression Footprints CAUTION. To avoid electrical damage, always turn off the power of your target system before cleaning the compression footprint. Prior to connecting the probe to the target system, the compression footprints on the target system must be properly cleaned.

  • Page 35: Cleaning The P6900 Probe Heads

    Maintenance 1. Remove elastomer holder. (See Figure 7.) 2. Moisten a cotton swab with isopropyl alcohol. Figure 7: Cleaning the probe heads 3. Gently wipe the edge print pads of the hybrid. 4. Remove any remaining lint using a nitrogen air gun. 5.

  • Page 36: Storing The P6800 Probe Heads

    Maintenance Figure 8: Cleaning the P6900 probe heads Storing the P6800 Probe Heads To protect the elastomer, it is important to properly store the probe heads when the probes are not in use. (See Figure 9.) 1. Locate the keying pin on the probe end and align it to the keying pin hole on the nutbar.

  • Page 37: Storing The P6900 Probe Heads

    Maintenance Storing the P6900 Probe Heads To protect the probe head, when the probes are not in use place the probe head cover on the probe. (See Figure 10.) 1. Gently slide the probe cover over the probe end. Figure 10: Storing the P6900 probe heads TLA7ACx Logic Analyzer Module Service Manual...
  • Page 38 Maintenance TLA7ACx Logic Analyzer Module Service Manual...

  • Page 39: Removal And Installation Procedures

    Removal and Installation Procedures This section describes how to remove and install the major mechanical and electrical modules. The procedures in this section assume that you already have removed the module from the mainframe. WARNING. Before doing any procedures in this manual, read the General Safety Summary and Service Safety Summary located at the beginning of this manual.

  • Page 40: Injector/Ejector Handles

    Removal and Installation Procedures Injector/Ejector Handles You will need a screwdriver with a T-10 tip to complete the following procedures. Removal Use the following procedure to remove the injector/ejector handles: 1. Place the module on the right side. (See Figure 11.) 2.

  • Page 41: Covers

    Removal and Installation Procedures Installation Use the following procedure to install the injector/ejector handles by referring the figure. (See Figure 11.) NOTE. The top and bottom injector/ejector handles are not interchangeable. The top injector/ejector handle assembly has a notch on right side and a tab on the left side;...

  • Page 42: Figure 12: Cover Removal

    Removal and Installation Procedures Figure 12: Cover removal TLA7ACx Logic Analyzer Module Service Manual...

  • Page 43: Figure 13: Removing The Merge Cable Bracket From The Cover

    Removal and Installation Procedures Figure 13: Removing the merge cable bracket from the cover TLA7ACx Logic Analyzer Module Service Manual...

  • Page 44: Figure 14: Installing The Cover Onto The Chassis

    Removal and Installation Procedures Installation Use the following procedure and figures to install the covers: NOTE. Install the cover tightly against the chassis. This will ensure that the module fits into adjacent slots in the mainframe. 1. Place the module on its right side. (See Figure 12.) CAUTION.
  • Page 45 Removal and Installation Procedures rotate, otherwise the module may not seat properly when installed in the mainframe. 7. Install the two remaining T-10 Torx-drive screws nearest the rear of the module (one on each side of the cover). 8. Place the cover onto the chassis. 9.

  • Page 46: Local Processor Unit Board

    NOTE. When placing an order for a replacement LPU board or an LPU exchange board from the Tektronix Exchange Center, you must supply the model number, serial number, PowerFlex Option upgrade number and firmware level. TLA7ACx Logic Analyzer Module Service Manual...

  • Page 47: Figure 16: Lpu Board Removal

    Removal and Installation Procedures Removal Use the following procedure and figure to remove the LPU board: 1. Perform the Covers removal procedure. (See page 31.) 2. Remove the five T-10 Torx-drive screws that secure the LPU board to the chassis. CAUTION.

  • Page 48: Figure 17: Inserting Lpu Board Tabs Into Front Subpanel

    System Properties tab in the TLA application. If the PowerFlex level does not match the information on the side panel label, you must return the entire logic analyzer module to your local Tektronix service center. Figure 17: Inserting LPU board tabs into front subpanel...

  • Page 49: Acquisition Board

    Removal and Installation Procedures Acquisition Board You will need a inch nut driver in addition to the T-10 Torx tip screwdriver to complete the following procedures. Removal Use the following procedure to remove the acquisition board by referring the figure. (See Figure 20.) 1.

  • Page 50: Figure 19: Removing The Merge Cable Assembly

    Removal and Installation Procedures Figure 19: Removing the merge cable assembly 4. Turn the chassis over and then remove the five spacer posts with the driver from the acquisition board. 5. Disconnect the four analog output cables on the acquisition board. TLA7ACx Logic Analyzer Module Service Manual...

  • Page 51: Figure 20: Removing The Acquisition Board From The Chassis

    Removal and Installation Procedures 6. Remove the five T-10 screws from the acquisition board located near the front of the chassis. Figure 20: Removing the acquisition board from the chassis 7. Carefully slide the acquisition board away from the front panel until the probe connectors clear the front panel.
  • Page 52 Removal and Installation Procedures Installation Use the following procedure to install the acquisition board: 1. Place the acquisition board into the chassis. 2. Carefully slide the acquisition board into the chassis until the probe connectors fit snuggly into the front panel slots. 3.

  • Page 53: Front And Rear Emi Gaskets

    Removal and Installation Procedures Front and Rear EMI Gaskets Removal Use the following procedure to remove the front and rear EMI gaskets: 1. Perform the Cover removal procedure. (See page 33.) 2. For the front EMI gaskets: a. Locate the gasket to be replaced. b.

  • Page 54: Side Emi Gaskets

    Removal and Installation Procedures Installation Use the following procedure and figure to install the EMI gaskets: 1. Position each gasket so the gasket fingers face the outside of the module. CAUTION. To avoid breaking the gasket fingers, do not lift the fingers too high. 2.

  • Page 55: Troubleshooting

    WARNING. Before performing this or any other procedure in this manual, read the General Safety Summary and Service Safety Summary located in the Tektronix Logic Analyzer Family Product Safety & Compliance Instructions (Tektronix part number 071-2591-xx). Also, to prevent possible injury or damage to electrical components, read Preventing Electrostatic Discharge.

  • Page 56: Required Documentation

    (Refer to the TLA7000 Series Logic Analyzer Installation Manual for software reinstallation procedures) Hard drive failure or corrupted files on hard drive; contact local Tektronix service center Modules not recognized Modules not fully inserted; make sure front of module is flush with front panel Mainframe power supply failure;...

  • Page 57: Eliminate Other Problem Sources

    Faulty probe, leadset, or probe adaptor Eliminate Other Problem Sources The logic analyzer module is part of the Tektronix Logic Analyzer Family, which consists of modules installed in either a benchtop or portable mainframe. The following procedures will help you eliminate the mainframe and other modules as possible sources of failures.
  • Page 58 Troubleshooting Substitute a Good Module If you have available a known-good logic analyzer module, perform the following procedure: 1. Remove the suspect logic analyzer module from the mainframe. 2. Install a known-good logic analyzer module in the same slot as the suspected module (verify that address switches on the rear of the module are set to same address as the module that you are replacing).

  • Page 59: Troubleshoot The Logic Analyzer Module

    Troubleshooting 1. Verify that the probe is correctly connected to the module and to the target system. 2. Move the suspected probe to another probe connector and observe if the problem follows the probe. If the problem does not follow the probe, the module may be faulty.
  • Page 60 Troubleshooting Power-On Diagnostics. Power-on diagnostics check basic functionality of the logic analyzer at every power on. If any failures occur at power on, the screen displays the calibration and diagnostics property sheet. If there are no diagnostic failures when you power on the logic analyzer, you can display and run the calibration and diagnostics property sheet by selecting Calibration and Diagnostics from the System menu.

  • Page 61: Fault Isolation Procedure

    Troubleshooting Fault Isolation Procedure The Primary Troubleshooting Tree provides troubleshooting steps that test the logic analyzer module. (See Figure 23.) Use the following procedure with that tree: To determine if module is recognized, perform the following steps: 1. Install the logic analyzer module into a known-good mainframe. 2.

  • Page 62: Figure 23: Primary Troubleshooting Chart

    Troubleshooting 7. Refer to the Table 5-6 after module replacement and perform all verification and adjustment procedures identified for the replaced module. (See Table 6.) Primary Troubleshooting Chart Figure 23: Primary troubleshooting chart TLA7ACx Logic Analyzer Module Service Manual...

  • Page 63: Diagnostics Table

    Troubleshooting Diagnostics Table The following table can help you isolate problems to one of the circuit boards in the module (use the Removal and Installation Procedures to replace the faulty circuit board). (See page 23.) Table 5: Diagnostic tests Circuit board Group Test Power on...
  • Page 64 Troubleshooting Table 5: Diagnostic tests (cont.) Circuit board Group Test Power on Extended Acquisition Miscellaneous Acquisition Address Decode board Tests Threshold At-speed Async Acquire Pseudo Random SFDL-1 SFDL-2 Demux Edge Detector Setup and Hold Glitch Memory AD Bus Interface MAR Rollover Controller Waveform 0 Waveform 1...

  • Page 65: Adjustment After Repair

    Extended Diagnostics, performance verification procedures The PowerFlex restoration or changes can only be made by Tektronix service personnel. Refer to the TLA7KUP Mainframe Field Upgrade Instruction Manual for instructions for updating module firmware. Updating or Restoring the Logic Analyzer Firmware You may have to update the firmware on the logic analyzer module if the module...
  • Page 66 Troubleshooting These modules cannot be updated until you install the flash jumper on the rear of the modules. 6. Select the modules that you want to update from the list of modules displayed in the Supported list box near the top of the window. If you are updating more than one module at a time, note the slot location of the module in the selection box.

  • Page 67: Repackaging Instructions

    When ordering the LPU board for exchange or repair, you will need to supply the above information, including the firmware level and PowerFlex configuration information. Mark the address of the Tektronix Service Center and the return address on the shipping carton in two prominent locations. CAUTION.

  • Page 68: Storage

    Repackaging Instructions Storage The logic analyzer module should be stored in a clean, dry environment. The following environmental characteristics apply for both shipping and storage: Temperature range: -40 °F to +160 °F (-40 °C to +71 °C). Altitude: To 40,000 feet (12,190 meters). TLA7ACx Logic Analyzer Module Service Manual...

  • Page 69: Parts List

    Parts List This section contains a list of the replaceable parts for the Tektronix logic analyzer module. Use this list to identify and order replacement parts, modules, and subcomponents. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative.

  • Page 70: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view number illustrations that follow. Tektronix part Use this part number when ordering replacement parts from Tektronix. number 3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.

  • Page 71: Figure 24: Logic Analyzer Module Exploded View

    Parts List Figure 24: Logic analyzer module exploded view Fig. index Tektronix part Serial no. Serial no. number number effective discont’d Name & description 24-1 671-5339-XX CIRCUIT BD ASSY:MERGE CONNECTOR, LEFT SIDE, TESTED 407-4859-XX BRACKET:MERGE, COVER, LEFT SIDE,0.050 AL 407-4860-XX BRACKET:BLANK FLAT,MERGE, COVER, LEFT SIDE, 0.050 AL...
  • Page 72 Parts List Fig. index Tektronix part Serial no. Serial no. number number effective discont’d Name & description 671-5312-XX CIRCUIT BD ASSY:LPU, LOCAL PROCESSOR UNIT 150-1278-XX DIODE,OPTO:LED, GRN, 569NM, 2MCD AT 5V, 60 DEG VIEW ANGLE, INTEGRAL RES, TINTED, DIFFUSED, RIGHT AN (NOT SHOWN)
  • Page 73 Parts List Fig. index Tektronix part Serial no. Serial no. number number effective discont’d Name & description 211-0486-XX SCREW, MACHINE:4-40 X 0.168 L, FLH, 100 DEG, TORX T-9 174-4595-XX CABLE ASSY:BNC - BNC, 10X ATTENUATION, 50 OHM COAX 174-4596-XX CABLE ASSY; STRANDED 7 INDIVIDUAL 16 AWG 174-4597-XX CABLE ASSY;RIBBON, EXTENDER CABLE FIXTURE, 28 AWG...

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