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Tektronix TBS1000 Series Service Manual

Digital storage oscilloscopes
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*P077077201*
077-0772-01

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Summary of Contents for Tektronix TBS1000 Series

  • Page 1 TBS1000 Series Digital Storage Oscilloscopes Service Manual *P077077201* 077-0772-01...
  • Page 3 TBS1000 Series Digital Storage Oscilloscopes Service Manual Revision B (20161230) This document applies to TBS1000 models with no display adapter module. 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.
  • Page 4 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 5: Table Of Contents

    System Level Block Diagrams ................Main Board ....................Acquisition System ..................Processing and Display System ............... Input Signal Interface................... Probe Compensation..................External Trigger ..................Main Board Power ..................Power Supply....................Display Module ....................Front Panel ....................Two-Channel Oscilloscopes ................TBS1000 Series Oscilloscope Service Manual...
  • Page 6 Interior Inspection ..................Cleaning Procedure, Interior................Removal and Installation Procedures..............Summary of Procedures ................Required Tools ..................Rear Feet ....................Flip Feet....................Front-Panel Knobs ..................Power Button .................... Rear Case ....................6-10 Front Feet ....................6-11 TBS1000 Series Oscilloscope Service Manual...
  • Page 7 Replaceable Parts Replaceable Parts ....................Parts Ordering Information ................. Using the Replaceable Parts List................Parts Lists and Exploded Views................Appendix A: Example of a Vertical Position Accuracy Test Spreadsheet......... Sample Filled-In Vertical Position Accuracy Test Spreadsheet........TBS1000 Series Oscilloscope Service Manual...
  • Page 8 6-25 Figure 6-8: Oscilloscope troubleshooting tree (page 4 of 4)..........6-26 Figure 7-1: TBS1000 series block diagram ..............Figure 8-1: Exploded diagram, 2-channel models ............Figure 8-2: Exploded diagram, 4-channel models ............Figure 8-3: Power supply module, cables, and wires............
  • Page 9 Table 8-3: Replaceable parts list, 4-channel models............Table 8-4: Replaceable parts list; power supply module, instrument cables, and wires ....Table 8-5: Replaceable parts list, back case and trim ............8-11 Table A-1: Vertical position accuracy test spreadsheet............TBS1000 Series Oscilloscope Service Manual...

  • Page 10: General Safety Summary

    Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualified service personnel. Avoid exposed circuitry. Do not touch exposed connections and components when power is present. TBS1000 Series Oscilloscope Service Manual...
  • Page 11 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. The following symbol(s) may appear on the product: TBS1000 Series Oscilloscope Service Manual...

  • Page 12: Service Safety Summary

    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. viii TBS1000 Series Oscilloscope Service Manual...

  • Page 13: Preface

    Preface This service manual provides information to verify performance of, calibrate, troubleshoot, disassemble, and replace parts on the TBS1000 Series Digital Storage Oscilloscopes. Unless noted otherwise, the term "oscilloscope" refers to all models in the TBS1000 series. Manual Conventions This manual uses certain conventions that you should become familiar with before attempting service.
  • Page 14 Preface TBS1000 Series Oscilloscope Service Manual...

  • Page 15: Specifications

    Specifications...

  • Page 17: Signal Acquisition System Characteristics

    Specifications These specifications apply to all TBS1000 series oscilloscopes. To verify that an oscilloscope meets specifications, it must first meet the following conditions: The oscilloscope must have been operating continuously for twenty minutes within the specified operating temperature. You must perform the Do Self Cal operation, accessible through the Utility menu, if the operating temperature has changed by more than 5 °C (9 °F)
  • Page 18 The settings are retained when the line power is turned off and on. The instrument periodically saves front panel settings after settings are changed. There is a delay of three seconds after the last change and before the storage of the settings in memory. 1–2 TBS1000 Series Oscilloscope Service Manual...
  • Page 19 0.707 (-3 dB) of the response seen in the data record at the specified reference frequency. Specifies only the -3 dB point. It does not include the in-band response. TBS1000 Series Oscilloscope Service Manual 1–3...
  • Page 20 Bandwidth of all trigger paths are similarly limited, except the External Trigger, which is not affected by BW Limit function. Each channel is separately limited, allowing different bandwidths on different channels of the same instrument. 1–4 TBS1000 Series Oscilloscope Service Manual...
  • Page 21 ±(1% of |selected value| + 0.1 div + 5 mV) within the range ±1.8 V > 200 mV/div to 5 V/div ±(1% of |selected value| + 0.1 div + 125 mV) within the range ±45 V TBS1000 Series Oscilloscope Service Manual 1–5...

  • Page 22: Time Base System

    (IEEE 1057, 2.2.1) Model Sample-rate range TBS1154, TBS1152 5 S/s to 1000 MS/s TBS1104, TBS1102 TBS1064, TBS1062 TBS1042 5 S/s to 500 MS/s TBS1022 1–6 TBS1000 Series Oscilloscope Service Manual...
  • Page 23 The Sample Interval is the time between the samples in the waveform record. Time Measurement Frequency, Period, Rise Time, Fall Time, Positive Width, negative Width, Positive Duty Cycle, Phase, Functions Delay TBS1000 Series Oscilloscope Service Manual 1–7...

  • Page 24: Triggering System

    Line Trigger mode provides a source to synchronize the trigger with the AC line input. Characteristics Input Amplitude requirements: 85 V - 265 V Input Frequency requirements: 45 Hz - 440 Hz. Edge Trigger Trigger Modes Auto, Normal 1–8 TBS1000 Series Oscilloscope Service Manual...
  • Page 25 1 V from DC to 100 MHz TBS1154, 2.5 V from 100 MHz to 1.75 V from 100 MHz to TBS1152 150 MHz 150 MHz Trigger Frequency Readout typically stabilizes at 50% more signal than generates a stable visual display. TBS1000 Series Oscilloscope Service Manual 1–9...
  • Page 26 Line, Line #, Odd Field, Even Field, Field: PAL/SECAM, NTSC formats Selection Video Trigger Field rates: 50 Hz to 60 Hz. Formats and Field Line rates: 15 kHz to 20 kHz (NTSC, PAL, SECAM) Rates 1–10 TBS1000 Series Oscilloscope Service Manual...
  • Page 27 This provides a highly accurate means of identifying the frequency of trigger signals. Since averaging Counter takes place over a longer time span, the number of stable digits is improved over the automatic measurement of the same type. TBS1000 Series Oscilloscope Service Manual 1–11...

  • Page 28: Display Specifications

    This is the light output of the backlight. 400 cd/m , typical. 320 cd/m min. Contrast Ratio and Available black room contrast ratio, full black to full white. 400 minimum, 500 typical. Control, typical 1–12 TBS1000 Series Oscilloscope Service Manual...

  • Page 29: Interfaces And Output Ports Specifications

    360 Hz to 440 Hz from 100 V to 120 V 45 Hz to 66 Hz from 100 V to 240 V Fuse Rating 3.15 Amps, T rating, 250 V; IEC and UL approved. TBS1000 Series Oscilloscope Service Manual 1–13...

  • Page 30: Mechanical Characteristics

    USB memory device, within a time duration that you have set. 1–14 TBS1000 Series Oscilloscope Service Manual...

  • Page 31: Limit Testing System Characteristics

    Channel 1, Channel 2, Math Channel 3 and channel 4 are available on 4-channel models. Vertical Limit The vertical limit in vertical divisions. 0~1000 mdiv Horizontal Limit The horizontal limit in horizontal divisions. 0~500 mdiv. TBS1000 Series Oscilloscope Service Manual 1–15...
  • Page 32 Waveforms: Lets you set the numbers of waveforms to test before stopping limit testing. Violations: Lets you set the numbers of violations to detect before stopping limit testing. Elapsed time: Lets you set the elapsed test time in seconds to pass before stopping limit testing. 1–16 TBS1000 Series Oscilloscope Service Manual...

  • Page 33: Where To Find Operating Information

    Where to Find Operating Information...
  • Page 35 Where to Find Operating Information For information on installing and operating your TBS1000 Series Digital Storage Oscilloscope, refer to the user manual for your product. The user manuals are available in eleven languages and are on the Web at www.tektronix.com/manuals.
  • Page 36 Where to Find Operating Information 2–2 TBS1000 Series Oscilloscope Service Manual...

  • Page 37: Theory Of Operation

    Theory of Operation...

  • Page 39: System Level Block Diagrams

    Theory of Operation This section covers the electrical operation of the TBS1000 series oscilloscopes to the module level by describing the basic operation of each functional circuit block. System Level Block Diagrams Two high-level block diagram is provided. One shows 2-channel models and the other shows 4-channel models.

  • Page 40: Figure 3-2: Module-Level Block Diagram (4-Channel)

    Theory of Operation Figure 3-2: Module-level block diagram (4-channel) 3–2 TBS1000 Series Oscilloscope Service Manual...

  • Page 41: Main Board

    USB interfaces via the dedicated USB controller. Saved setups, waveforms, and calibration constants are stored in nonvolatile memory sections within the flash PROM. The processor system shares DRAM with the display system. TBS1000 Series Oscilloscope Service Manual 3–3...

  • Page 42: Processing And Display System

    The secondary supplies from the power supply and the approximate current draws are listed in a table with the associated connector pins on J101. (See Table 6-5.) 3–4 TBS1000 Series Oscilloscope Service Manual...

  • Page 43: Display Module

    The left side of the board is largely handled by the display FPGA for channels Oscilloscopes 1 and 2. The right side of the board is handled by the channel 3 and 4 ASIC. Separate front-panel ICs support these data paths. TBS1000 Series Oscilloscope Service Manual 3–5...
  • Page 44 Theory of Operation 3–6 TBS1000 Series Oscilloscope Service Manual...

  • Page 45: Performance Verification

    Performance Verification...

  • Page 47: Required Equipment

    Tektronix part number 103-0058-XX Leads, 3 Black Stacking Banana Plug Patch Cord, ≈ 45 cm Pomona #B-18-0 (18 in) long Leads, 2 Red Stacking Banana Plug Patch Cord, ≈ 45 cm Pomona #B-18-2 (18 in) long TBS1000 Series Oscilloscope Service Manual 4–1...

  • Page 48: Test Record

    Channel 4 Vertical Position Accuracy Minimum margin Channels 3 and 4 are only available on 4-channel oscilloscopes. The bandwidth test does not have a high limit. The limits vary by model. Check the procedure for the correct limits. 4–2 TBS1000 Series Oscilloscope Service Manual...

  • Page 49: Performance Verification Procedures

    1. Set the DC voltage source output level to 0 V. 2. Set up the oscilloscope using the following table: Push menu button Select menu option Select setting — — Default Setup Channel 1 Probe Acquire Average Measure Source Channel under test Type Mean TBS1000 Series Oscilloscope Service Manual 4–3...
  • Page 50 +7.00 V, -7.00 V 13.58 V to 14.42 V 5. Set DC voltage source output level to 0 V. 6. Disconnect the test setup. 7. Repeat steps 1 through 6 for all input channels. 4–4 TBS1000 Series Oscilloscope Service Manual...

  • Page 51: Check Bandwidth

    40 MHz if you are checking a TBS1042 25 MHz if you are checking a TBS1022 8. Set the oscilloscope Horizontal Scale (seconds/division) to 10 ns/div. 9. Check that the peak-to-peak measurement is ≥ 2.12 V. TBS1000 Series Oscilloscope Service Manual 4–5...

  • Page 52: Check Sample Rate Accuracy And Delay Time Accuracy

    7. Use the Vertical Position control to center the test signal on screen. 8. Use the Horizontal Position control to set the position to 10.00 ms. 9. Set the oscilloscope Horizontal Scale (seconds/division) to 250 ns/div. 4–6 TBS1000 Series Oscilloscope Service Manual...

  • Page 53: Check Edge Trigger Sensitivity

    1. Set up the oscilloscope using the following table: Push menu button Select menu option Select setting — — Default Setup Probe Channel 1 Trig Menu Mode Normal — Acquire Sample Measure Source Channel under test Type Pk-Pk TBS1000 Series Oscilloscope Service Manual 4–7...
  • Page 54 12. For the TBS1154 and TBS1152 models, set the frequency to 150 MHz, and increase the amplitude to 1 V . Verify stable triggering. 13. Set the oscilloscope Horizontal Scale (seconds/division) to 2.5 ns/div. 14. Change the oscilloscope setup using the following table: 4–8 TBS1000 Series Oscilloscope Service Manual...

  • Page 55: Check External Edge Trigger Sensitivity

    5. Set the leveled sine wave generator frequency to 10 MHz. 6. Set the sine wave generator output level to approximately 300 mV into the power splitter. This is about 200 mV on channel 1 of the oscilloscope. TBS1000 Series Oscilloscope Service Manual 4–9...

  • Page 56: Check Vertical Position Accuracy

    The two attenuator settings operate identically, so verification of the attenuation range from -1.8 V to 1.8 V also verifies the attenuation range of -45 V to 45 V. 4–10 TBS1000 Series Oscilloscope Service Manual...
  • Page 57 The PDF version of the service manual (which you can download from www.tektronix.com/manuals), includes an empty spreadsheet for your convenience. To access and save the test spreadsheet, see the instructions in Appendix A: Example of a Vertical Position Accuracy Test Spreadsheet on page A-1.
  • Page 58 9. Repeat steps 4 through 6 for the values of -0.04 V through -1.8 V. 10. Enter the Minimum Margin number (cell I16) for the channel tested in the test record. 11. Repeat steps 1 through 10 for all input channels. 4–12 TBS1000 Series Oscilloscope Service Manual...

  • Page 59: Figure 4-1: Example Of A Line Graph For The Vertical Position Accuracy Test

    (upper line), or below the purple line (lower line). For calculations involved in this example, refer to the data in the previous table (see step 1). Figure 4-1: Example of a line graph for the Vertical Position Accuracy test TBS1000 Series Oscilloscope Service Manual 4–13...
  • Page 60 Performance Verification 4–14 TBS1000 Series Oscilloscope Service Manual...

  • Page 61: Adjustment Procedures

    Adjustment Procedures...

  • Page 63: Required Equipment

    Adjustment Procedures This section contains adjustment procedures for the TBS1000 series oscilloscopes. Only qualified personnel should perform service procedures. Read the Service Safety Summary and the General Safety Summary at the beginning of this manual before performing any service procedures. Refer to the user manual for information about using these oscilloscopes.

  • Page 64: Enable The Service Menu

    9. Push the front-panel Utility button. The last item in the Utility menu is now "Service." At completion of the Adjustment procedure, disable the "Service" menu through the Utility front panel button, the "Service" option button, and the "Service" Mode Off" option button. 5–2 TBS1000 Series Oscilloscope Service Manual...

  • Page 65: Figure 5-1: Adjustment Setups

    Adjustment Procedures Figure 5-1: Adjustment setups TBS1000 Series Oscilloscope Service Manual 5–3...

  • Page 66: Adjustment Procedure

    14. Press the Utility button and select Do Self Cal to confirm that you are ready to proceed. 15. Disable the Service menu option by pushing the Utility front-panel button and the Service and Service Mode Off option buttons. 5–4 TBS1000 Series Oscilloscope Service Manual...

  • Page 67: Table 5-2: Adjustment Steps

    DC Voltage 1 20.0 V DC Voltage 1 0.0 V Ext Trig DC voltage 2 DC Voltage 2 -5.0 V DC Voltage 2 -1.0 V 1.0 V DC Voltage 2 DC Voltage 2 5.0 V TBS1000 Series Oscilloscope Service Manual 5–5...
  • Page 68 20 MHz, 2.5 V Sinewave Generator, 50 Ω BWL, 2.5 V Sinewave Generator, 50 Ω BWL, 5 V Sinewave Generator, 50 Ω BWL, 1.6 V Edge 1 kHz, 0 to -800 mV Edge, 50 Ω. 5–6 TBS1000 Series Oscilloscope Service Manual...
  • Page 69 20 MHz, 2.5 V Sinewave Generator, 50 Ω BWL, 2.5 V Sinewave Generator, 50 Ω BWL, 5 V BWL, 1.6 V Sinewave Generator, 50 Ω Edge Edge, 50 Ω. 1 kHz, 0 to -800 mV TBS1000 Series Oscilloscope Service Manual 5–7...
  • Page 70 20 MHz, 2.5 V Sinewave Generator, 50 Ω BWL, 2.5 V Sinewave Generator, 50 Ω BWL, 5 V NOTE. BWL=full bandwidth for the TBS1022, 1042, 1062, 1102, and 1104. BWL=180 Mhz for the TBS1152 and TBS1154 5–8 TBS1000 Series Oscilloscope Service Manual...

  • Page 71: Maintenance

    This chapter contains the information needed to do periodic and corrective maintenance on the oscilloscope, as well as repackaging instructions to use if you need to return the oscilloscope to Tektronix for service. Preventing ESD Before servicing this product, read the Safety Summary and Introduction at the front of the manual and the electrostatic discharge (ESD) information below.

  • Page 72: General Care

    Use a 75% isopropyl alcohol solution as a cleaner and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative. Clean the exterior surfaces of the chassis with a dry lint-free cloth or a soft-bristle brush.

  • Page 73: Exterior Inspection

    If any circuit board is repaired or replaced, check the table to see if it is necessary to adjust the oscilloscope. (See Table 6-2.) CAUTION. To prevent damage from electrical arcing, make sure that circuit boards and components are dry before applying power to the oscilloscope. TBS1000 Series Oscilloscope Service Manual 6–3...

  • Page 74: Cleaning Procedure, Interior

    A cotton-tipped applicator is useful for cleaning in narrow spaces and on circuit boards. STOP. If, after performing steps 1 and 2, a module is clean on inspection, skip steps 3, 4, and 5. Proceed with step 6. 6–4 TBS1000 Series Oscilloscope Service Manual...
  • Page 75 7. Dry all components and assemblies in an oven or drying compartment using low-temperature (52 °C to 66 °C / 125 °F to 150 °F) circulating air. Lubrication. Periodic lubrication is not required for the oscilloscope. TBS1000 Series Oscilloscope Service Manual 6–5...

  • Page 76: Removal And Installation Procedures

    (See page 6-15, Front-Panel Cable.) Main Board Module (See page 6-16, Main Board Module (without the Display Adapter Module).) Display Module (See page 6-19, Display Module.) Front-Panel Module (See page 6-20, Front-Panel Module.) Keypad (See page 6-21, Keypad.) 6–6 TBS1000 Series Oscilloscope Service Manual...

  • Page 77: Figure 6-1: Locator For Trim And Cabinet Removal (2-Channel Model Shown)

    Maintenance Figure 6-1: Locator for trim and cabinet removal (2-channel model shown) Figure 6-2: Locator for internal modules (2-channel model shown) TBS1000 Series Oscilloscope Service Manual 6–7...
  • Page 78 1. Place the oscilloscope face down on a soft surface such as an anti-static mat. 2. Align the slots of the rear foot with the guides in the rear case and press the foot in. 6–8 TBS1000 Series Oscilloscope Service Manual...
  • Page 79 Wrap the plier jaws with tape (such as electrical tape) to avoid scratching the button. Removal. Firmly grasp the button with pliers and pull it straight out of the cabinet. Installation. Press the button onto the power button shaft until it snaps into place. TBS1000 Series Oscilloscope Service Manual 6–9...
  • Page 80 3. Install the five screws in the rear case. Tilt the handle to access the top two holes. 4. Install the two ESD protection covers. 5. Install the power button. (See page 6-9, Power Button.) 6–10 TBS1000 Series Oscilloscope Service Manual...
  • Page 81 For example, you may need to do this if the rear case has been removed, and a foot has been rubbed off and unnoticed until the case is being assembled. TBS1000 Series Oscilloscope Service Manual 6–11...

  • Page 82: Power Supply Module

    Wind up the power supply cable until it is tight; loops are okay. This keeps the cable bundle together. 5. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. 6–12 TBS1000 Series Oscilloscope Service Manual...

  • Page 83: Internal Assembly

    TBS1000 with the display adapter, it should look like the unit shown in the figure below. (See page 6-14.) For maintenance on such models, refer to the previous version of the TBS1000 service manual (077-0772-00). To find manuals online, go to: www.tektronix.com/manuals. TBS1000 Series Oscilloscope Service Manual 6–13...

  • Page 84: Figure 6-3: Main Board With The Display Adapter (Refer To: Service Manual 077-0772-00)

    2. Place the internal assembly in the front case. 3. Install the five screws to attach the internal assembly to the front case. 4. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. 6–14 TBS1000 Series Oscilloscope Service Manual...

  • Page 85: Front-Panel Cable

    4. Install the four screws to attach the front panel module to the chassis. 5. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. TBS1000 Series Oscilloscope Service Manual 6–15...

  • Page 86: Main Board Module (Without The Display Adapter Module)

    The power supply cable at J101. Press down on the latch while pulling up on the cable The display ribbon cable (J1501 for 2 Ch, J2002 for 4 Ch) The backlight wire cable (J1502 for 2 Ch, J2001 for 4 Ch) The front-panel cable at J202 6–16 TBS1000 Series Oscilloscope Service Manual...

  • Page 87: Figure 6-4: Instrument Cable Locations (Main Board Without The Display Adapter Module)

    BNC connectors. 2. Use the deep socket to attach the washers and nuts to each BNC connector so that the Main board is securely attached to the chassis. TBS1000 Series Oscilloscope Service Manual 6–17...
  • Page 88 The backlight wire cable (J1502 for 2 Ch, J2001 for 4 Ch) The front-panel cable at J202 5. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. 6–18 TBS1000 Series Oscilloscope Service Manual...

  • Page 89: Display Module

    5. Connect the display ribbon cable to the Main board (J1501 for 2 Ch, J2002 for 4 Ch). 6. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. TBS1000 Series Oscilloscope Service Manual 6–19...

  • Page 90: Front-Panel Module

    (See page 6-17.) 3. Install the five screws to attach the Front-Panel module to the internal assembly. 4. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. 6–20 TBS1000 Series Oscilloscope Service Manual...

  • Page 91: Keypad

    Skin oils and dust inhibit good electrical contact. 3. Check that all buttons are properly seated before proceeding. 4. Assemble the oscilloscope by performing the installation procedure in reverse order for each module that was removed. TBS1000 Series Oscilloscope Service Manual 6–21...

  • Page 92: Troubleshooting

    USB flash drive Tektronix part number 119-7276-00, 128 MB USB type A to type B cable Tektronix part numbers: 174-4401-00, 0.91 meters (3 feet) 174-5194-00, 1.83 meters (6 feet) PC with USB host post and PC with USB communication port...

  • Page 93: Figure 6-5: Oscilloscope Troubleshooting Tree

    Maintenance Figure 6-5: Oscilloscope troubleshooting tree (page 1 of 4) TBS1000 Series Oscilloscope Service Manual 6–23...

  • Page 94: Figure 6-6: Oscilloscope Troubleshooting Tree

    Maintenance Figure 6-6: Oscilloscope troubleshooting tree (page 2 of 4) 6–24 TBS1000 Series Oscilloscope Service Manual...

  • Page 95: Figure 6-7: Oscilloscope Troubleshooting Tree

    Maintenance Figure 6-7: Oscilloscope troubleshooting tree (page 3 of 4) TBS1000 Series Oscilloscope Service Manual 6–25...

  • Page 96: Figure 6-8: Oscilloscope Troubleshooting Tree

    Maintenance Figure 6-8: Oscilloscope troubleshooting tree (page 4 of 4) 6–26 TBS1000 Series Oscilloscope Service Manual...

  • Page 97: Probe Comp Output

    Troubleshooting the Display.) Non-1 kHz signal Refer to Troubleshooting the Main Board. (See page 6-33, Troubleshooting the Main Board.) No signal Refer to Troubleshooting the Power Supply. (See page 6-28, Troubleshooting the Power Supply.) TBS1000 Series Oscilloscope Service Manual 6–27...

  • Page 98: Troubleshooting The Power Supply

    If the fuse is defective, replace the power supply module. 7. If the fuse is okay, and all or some of the voltages are missing, the power supply module is probably defective. Replace it. 6–28 TBS1000 Series Oscilloscope Service Manual...

  • Page 99: Troubleshooting The Display

    6. Reattach the front panel. 7. Reconnect the backlight and display cables to the Main board. 8. Power on the oscilloscope. If the display still does not work, contact your local Tektronix Customer Service Center for assistance. TBS1000 Series Oscilloscope Service Manual 6–29...

  • Page 100: Troubleshooting The Front Panel

    Test Screen Checks the display screen pixels with different patterns from each push of the button. Contrast Allows you to check the display contrast operation across 100% of the hardware range. 6–30 TBS1000 Series Oscilloscope Service Manual...

  • Page 101: Table 6-9: Expected Signals At J202

    0 V (ground) 6 FPTHERMSTR_P Front Panel Temp Sense About 2 V depending on temperature, contrast setting, and display type. 7 FP_PWR 5.0 V 8 FPTHERMGND_P Temp Sense Return Ground. 9 GND 0 V (ground) TBS1000 Series Oscilloscope Service Manual 6–31...
  • Page 102 14. Turn on the oscilloscope and check connector J202 for the same signals as in step . 15. If some or all of the signals are missing, the Main board is probably defective. Replace it. 6–32 TBS1000 Series Oscilloscope Service Manual...

  • Page 103: Troubleshooting The Main Board

    Troubleshooting Input Follow these steps to troubleshoot the input connections only if the oscilloscope appears to function normally in every way, but an input signal is not getting into Connections the oscilloscope as expected. TBS1000 Series Oscilloscope Service Manual 6–33...

  • Page 104: Table 6-11: List Of Error Codes

    ADG522 #2 diagnostics failed Main board or power supply failure 16 DI DRAM2 diagnostics failed Main board or power supply failure 17 DI USB diagnostics failed Main board or power supply failure Software Contact Tektronix 6–34 TBS1000 Series Oscilloscope Service Manual...
  • Page 105 3. Push the Service Diag. option button to display the Diagnostics menu. 4. Push the Clear Error Log option button to clear the error log of past failures. This also sets the Power Cycle count to zero. TBS1000 Series Oscilloscope Service Manual 6–35...

  • Page 106: Repackaging Instructions

    The oscilloscope should not move around inside the carton when the carton is sealed. If the oscilloscope is being shipped to a Tektronix Service Center, enclose the following information:...

  • Page 107: Diagrams

    Diagrams This section describes the electrical operation of the TBS1000 series oscilloscopes using the major circuit blocks or modules. The oscilloscope module interconnections are shown in the figure. (See Figure 7-1.). TBS1000 Series Oscilloscope Service Manual 7–1...

  • Page 108: Figure 7-1: Tbs1000 Series Block Diagram

    Diagrams The shaded area in the figure represents modules and circuits used only in 4-channel oscilloscopes. Figure 7-1: TBS1000 series block diagram 7–2 TBS1000 Series Oscilloscope Service Manual...

  • Page 109: Replaceable Parts

    Replaceable Parts...

  • Page 111: Parts Ordering Information

    Level revision level number. When you order parts, Tektronix will provide you with the most current part for your product type, serial number, and modification (if applicable). At the time of your order, Tektronix will determine the part number revision level needed for your product, based on the information you provide.

  • Page 112: Using The Replaceable Parts List

    (:). Because of space limitations, an item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for further item name identification. Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972. 8–2 TBS1000 Series Oscilloscope Service Manual...

  • Page 113: Parts Lists And Exploded Views

    The following tables show the module-level exploded views of the TBS1000 oscilloscopes. Following each exploded view is the list of components, indexed by the numbers in the figure. Figure 8-1: Exploded diagram, 2-channel models TBS1000 Series Oscilloscope Service Manual 8–3...

  • Page 114: Table 8-2: Replaceable Parts List, 2-Channel Models

    CONTACT, ELEC; GROUNDING, 0.600 L X 0.250 W X 0.220 D, ELECTROLESS NICKEL PLATE 131-6521-00 CONTACT, ELEC; EMI, CLIP-ON, 0.38 L X 0.460 W (2 CONTACTS) X 0.45 HIGH, ELECTROLESS NICKEL PLATE 220-0297-00 LCD, NUT, M4 210-1610-00 LCD, STANDARD SPRING WASHER, M4 441-271-00 SHIELD, GUARD/VIBRATION DAMPER 8–4 TBS1000 Series Oscilloscope Service Manual...
  • Page 115 Replaceable Parts Table 8-2: Replaceable parts list, 2-channel models (cont.) 850-0115–70 DISPLAY ASSY; COLOR 348-1525-00 FOOT; FRONT, SANTOPRENE, BLACK, 64 DEROMETER, TEXTURED TBS1000 Series Oscilloscope Service Manual 8–5...

  • Page 116: Figure 8-2: Exploded Diagram, 4-Channel Models

    Replaceable Parts Figure 8-2: Exploded diagram, 4-channel models 8–6 TBS1000 Series Oscilloscope Service Manual...

  • Page 117: Table 8-3: Replaceable Parts List, 4-Channel Models

    CONTACT, ELEC; EMI, CLIP-ON, 0.38 L X 0.460 W (2 CONTACTS) X 0.45 HIGH, ELECTROLESS NICKEL PLATE 220-0297-00 LCD, NUT, M4 210-1610-00 LCD, STANDARD SPRING WASHER, M4 441-2712-00 SHIELD, GUARD/VIBRATION DAMPER 850-0115–70 DISPLAY ASSY; COLOR 348-1525-00 FOOT; FRONT, SANTOPRENE, BLACK, 64 DEROMETER, TEXTURED TBS1000 Series Oscilloscope Service Manual 8–7...

  • Page 118: Figure 8-3: Power Supply Module, Cables, And Wires

    SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL, T- 15 TORX DR 343-1673-00 CLAMP, CABLE; NYLON 6/6, COLOR NATURAL 174-4658-00 CA ASSY, SP; DISCRETE, 26 AWG, 5.5 L, FEMALE, 1 X 12, 0.059 (1.5 MM) CTR, DUAL ENDED, FRONT PANEL 8–8 TBS1000 Series Oscilloscope Service Manual...
  • Page 119 POWER SUPPLY: CUSTOM AC-DC, 85-275 VAC 45-440HZ IN, +6 V 1.0 A, +3.3 V 1.8 A, -4 V 0.8 A, 35 V 0.015 A OUT, LINE TRIGGER SIGNAL, SAFETY CONTROLLED 211-1275-00 SCREW, MACHINE; W/HEAVY PATCH THREADLOCKING MATERIAL; 6-32 X 0.312 L, PNH, STL, ZNPL, T15 TBS1000 Series Oscilloscope Service Manual 8–9...

  • Page 120: Figure 8-4: Exploded Diagram, Back Case And Trim

    Replaceable Parts Figure 8-4: Exploded diagram, back case and trim 8–10 TBS1000 Series Oscilloscope Service Manual...

  • Page 121: Table 8-5: Replaceable Parts List, Back Case And Trim

    FOOT, FRONT: FLIPMPC/ABS, SILVER GRAY 348-1704-00 FOOT, REAR: SANTOPRENE, BLACK 211-1272-00 SCREW, MACHINE: 6-32 X 0.250, PNH, STL, ZNPL, T-15 TORX DR 200-5105-00 COVER, ESD PROTECTION 366-0856-00 PUSH BUTTON, POWER 211-1273-00 SCREW, PT; K35-1.57, PAN HEAD, T-15 TBS1000 Series Oscilloscope Service Manual 8–11...
  • Page 122 Replaceable Parts 8–12 TBS1000 Series Oscilloscope Service Manual...

  • Page 123: Appendix A: Example Of A Vertical Position Accuracy Test Spreadsheet

    This appendix contains a filled-in example of the vertical position accuracy (VPA) test spreadsheet that is used. (See page 4-10, Check Vertical Position Accuracy.) The PDF version of this service manual (Tektronix part number 077-0772-01) includes an empty VPA test spreadsheet for your convenience. To access and save the test spreadsheet: 1.
  • Page 124 0.014 0.92 0.92 0.926 -0.006 -0.0192 0.0192 0.013 0.88 0.88 0.886 -0.006 -0.0188 0.0188 0.013 0.84 0.84 0.845 -0.005 -0.0184 0.0184 0.013 0.80 0.805 -0.005 -0.018 0.018 0.013 0.76 0.76 0.764 -0.004 -0.0176 0.0176 0.014 TBS1000 Series Oscilloscope Service Manual...
  • Page 125 -0.6 -0.6 -0.592 -0.008 -0.016 0.016 0.008 -0.64 -0.64 -0.633 -0.007 -0.0164 0.0164 0.009 -0.68 -0.68 -0.673 -0.007 -0.0168 0.0168 0.010 -0.72 -0.72 -0.713 -0.007 -0.0172 0.0172 0.010 -0.76 -0.76 -0.754 -0.006 -0.0176 0.0176 0.012 TBS1000 Series Oscilloscope Service Manual...
  • Page 126 -0.028 0.028 0.018 ‡ ‡ ‡ -1.84 ‡ ‡ ‡ -1.88 ‡ ‡ ‡ -1.92 ‡ ‡ ‡ -1.96 ‡ ‡ ‡ -2.00 ‡ These test values are outside of the range in the specification. TBS1000 Series Oscilloscope Service Manual...

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