Page 1 Digital Phosphor Oscilloscopes 071-0972-05 Revision B This document supports firmware version 3.00 and above for TDS3000B Series instruments only. 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 2 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 supercedes that in all previously published material.
Page 3 ......... . . 6- - 2 TDS3000B Series Service Manual...
Page 4 ........10- - 2 TDS3000B Series Service Manual...
Page 5: Table Of Contents
Table of Contents List of Figures Figure 3- -1: TDS3000B series block diagram ....3- -1 Figure 6- -1: Pulling the hub pin .
Page 6 ..10- -10 Figure 10- -5: Exploded view, rear case half ..... 10- -13 TDS3000B Series Service Manual...
Page 7 ....6- -6 Table 7- -1: TDS3000B Series options ......
Page 8 Table of Contents TDS3000B Series Service Manual...
Page 9 Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings information before making connections to the product. Connect the ground lead of the probe to earth ground only. TDS3000B Series Service Manual...
Page 10 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. viii TDS3000B Series Service Manual...
Page 11 Handle Components Carefully. Do not slide sensitive components over any surface. Do not touch exposed connector pins. Handle sensitive components as little as possible. Transport and Store Carefully. Transport and store sensitive components in a static-protected bag or container. TDS3000B Series Service Manual...
Page 12 1.5 grams of lithium, as measured by International Civil Aviation Organization (ICAO) standards. Consult your air carrier for applicability and determination of any special lithium ion battery transportation requirements. TDS3000B Series Service Manual...
Page 13 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. TDS3000B Series Service Manual...
Page 14 8 grams of equivalent lithium content, with individual cells containing less than 1.5 grams of equivalent lithium, as measured by International Civil Aviation Organization (ICAO) standards. Consult your air carrier for applicability and determination of any special lithium ion battery transportation requirements. TDS3000B Series Service Manual...
Page 15 Restriction of Hazardous This product has been classified as Monitoring and Control equipment, and is Substances outside the scope of the 2002/95/EC RoHS Directive. This product is known to contain lead, cadmium, mercury, and hexavalent chromium. xiii TDS3000B Series Service Manual...
Page 16 Preface This Service manual provides information to troubleshoot, disassemble, and repair the following TDS3000B Series Digital Phosphor Oscilloscopes instru- ment to the module level: H TDS3012B H TDS3014B H TDS3024B H TDS3032B H TDS3034B H TDS3044B H TDS3052B H TDS3054B...
Page 17 Specifications...
Page 19 Specifications This appendix contains specifications for the TDS3000B Series oscilloscopes. All specifications are guaranteed unless noted as “typical.” Typical specifications are provided for your convenience but are not guaranteed. Specifications that are marked with the n symbol are checked in Performance Verification.
Page 20 ≤ 300 MHz ≥ 50:1 ≤ 400 MHz ≥ 30:1 ≤ 500 MHz ≥ 30:1 ≤ 600 MHz ≥ 30:1 Differential delay, 100 ps between any two channels with the same scale and coupling typical settings 1- 2 TDS3000B Series Service Manual...
Page 21 1.2 ns TDS304xB 0.9 ns TDS305xB 0.7 ns TDS306xB 0.6 ns Values typical for 1 mV/div through 9.98 mV/div. 500 MHz typical at 5 mV/div to 9.98 mV/div; 600 MHz at 10 mV/div and greater. 1- 3 TDS3000B Series Service Manual...
Page 22 Note: Convert both the constant offset and position terms to volts by Note: Convert both the constant offset and position terms to volts by multiplying by the volts/div setting 0.02 term (gain component) derated at 0.00025/˚C above 30 ˚C 1- 4 TDS3000B Series Service Manual...
Page 23 External trigger 200 mV from DC to 50 MHz, increasing to 750 mV at 300 MHz External/10 trigger 500 mV from DC to 50 MHz, increasing to 3 V at 300 MHz 1- 5 TDS3000B Series Service Manual...
Page 24 Source Sensitivity Any channel 0.6 to 2.5 divisions of video sync External trigger 150 mV to 625 mV of video sync External/10 trigger 1.5 V to 6.25 V of video sync tip 1- 6 TDS3000B Series Service Manual...
Page 25 Floppy disk 3.5 in, DOS format, 720 KB or 1.44 MB compatible Internal clock Provides date/time stamp for stored data and the current time and date to the display, if enabled 1- 7 TDS3000B Series Service Manual...
Page 26 30% RH at 60 °C Typical operating range for floppy disks: 20% to 80% RH below 32 °C, derate upper limit to 21% RH at 50 °C Pollution Degree Pollution Degree 2: Typical home or office environment. 1- 8 TDS3000B Series Service Manual...
Page 27 Depth: 149 mm (5.9 in) Weight Oscilloscope only: 3.2 kg (7.0 lbs) With accessories and carry case: 4.1 kg (9.0 lbs) When packaged for domestic shipment: 5.5 kg (12.0 lbs) Optional TDS3BATB battery pack: 0.85 kg (1.9 lbs) 1- 9 TDS3000B Series Service Manual...
Page 28 150 kHz to 80 MHz, with 80% amplitude modulation at 1 kHz) is not to exceed 2 major divisions peak-to-peak. Ambient conducted fields may induce triggering when the trigger threshold is offset less than 1 major division from ground reference. 1- 10 TDS3000B Series Service Manual...
Page 29 CAT II Local-level mains (wall sockets). Equipment at this level includes appliances, portable tools, and similar products. Equipment is usually cord-connected CAT I Secondary (signal level) or battery operated circuits of electronic equipment 1- 11 TDS3000B Series Service Manual...
Page 30 Specifications 1- 12 TDS3000B Series Service Manual...
Page 31 Operating Information...
Page 33 For more detailed information about operating information, see the TDS3000B Series Digital Phosphor Oscilloscope User Manual. For information about unpacking and inspecting the instrument, see Unpacking and Repacking Instructions on page 6- -43 of this manual. 2- 1 TDS3000B Series Service Manual...
Page 34 ( ) shows the relative charge level in the battery. The oscilloscope turns off automatically when the battery runs low. Refer to the General Safety Summary for information about proper rechargeable battery disposal. 2- 2 TDS3000B Series Service Manual...
Page 35 , >42 V ). To protect against this condition, attach the Tektronix-supplied grounding wire from the terminal on the rear panel to earth ground. If you use a different grounding wire, it must be larger than 18 gauge (1 mm...
Page 36 2. Slide the battery into the compartment and press it in from both sides until you hear the latches click. 3. Press on both sides of the battery compartment door to snap it closed. 2- 4 TDS3000B Series Service Manual...
Page 37 Operating Information To remove the battery, do these steps: 1. Open the battery compartment door. 2. Lift the battery handles and pull the battery out of the oscilloscope. 2- 5 TDS3000B Series Service Manual...
Page 38 Battery charging in oscilloscope with oscillo- 30 hours scope turned on or off Battery charging with TDS3CHG external 5 hours charger NOTE . Charge the battery before using it for the first time or after prolonged storage. 2- 6 TDS3000B Series Service Manual...
Page 39 Application modules Contacts Refer to the TDS3000 & TDS3000B Series Application Module Installation Instructions that came with your application module for instructions on installing and testing an application module. NOTE. If you remove an application module, the functions provided by the application module become unavailable.
Page 40 3. Slide out the communication module and store it in an ESD-shielded bag. Install the blank cover if no other communication module is to be installed. Latching tab 2- 8 TDS3000B Series Service Manual...
Page 41 VERTICAL HORIZONTAL TRIGGER ACQUIRE 2. Push a bottom screen button to select a menu item. If a pop-up menu appears, continue to push the screen button to select an item from the pop-up menu. 2- 9 TDS3000B Series Service Manual...
Page 42 4. Certain menu choices require you to set a numerical value to complete the setup. Use the general purpose knob to adjust the parameter value. Push the COARSE button to make larger adjustments. SELECT COARSE VERTICAL POSITION 2- 10 TDS3000B Series Service Manual...
Page 43 5. QUICKMENU. Activates QuickMenus such as the built-in Quick Scope feature. 6. UTILITY. Activates the system utility functions, such as selecting a language. VERTICAL HORIZONTAL TRIGGER ACQUIRE POSITION POSITION LEVEL SCALE SCALE WAVEFORM INTENSITY 2- 11 TDS3000B Series Service Manual...
Page 44 4. Vertical POSITION. Adjusts the vertical position of the selected waveform. Push COARSE to make adjustments more quickly. 5. Horizontal POSITION. Adjusts the trigger point location relative to the acquired waveforms. Push COARSE to make adjustments quickly. 2- 12 TDS3000B Series Service Manual...
Page 45 17. Waveform OFF. Removes the selected waveform from the display. 18. Vertical SCALE. Adjusts the vertical scale factor of the selected waveform. 19. CH1, CH2, (CH3, CH4,) MATH. Displays a waveform and chooses the selected waveform. REF shows the reference waveform menu. 2- 13 TDS3000B Series Service Manual...
Page 46 21. Power switch. Turns power to on or standby. 22. Wrist-strap ground. Use to connect a wrist strap when working with ESD-sensitive circuits. This connector is not a safety ground. 23. MENU OFF. Clears menu from the display. 2- 14 TDS3000B Series Service Manual...
Page 47 9. Trigger readouts show the trigger sources, slopes, and levels, and position. 10. Readout shows the delay setting or the trigger location within the record. 11. Horizontal readout shows the main or zoom time/division. 2- 15 TDS3000B Series Service Manual...
Page 48 For example, if you want to add an automatic measurement, push the MEASURE button to set up the measurement. Then, push the QUICKMENU button to return to the Quick Scope menu with the measurement also in the display. 2- 16 TDS3000B Series Service Manual...
Page 49 Those items are described on page 2- -15. Other QuickMenus. Some optional application packages include a custom QuickMenu display. Those QuickMenus contain specific features that are important for the application. 2- 17 TDS3000B Series Service Manual...
Page 50 2. CH1, CH 2, (CH3, CH4). Channel inputs with TekProbe interface. 3. EXT TRIG. External trigger input with TekProbe interface (two-channel models only). Four-channel models have an external trigger input on the rear of the oscilloscope. 2- 18 TDS3000B Series Service Manual...
Page 51 6. DC power output. Provides ~15 V DC power to accessories or to the plug-in TDS3PRT thermal printer. 7. Ground terminal. Connect to earth ground when using battery power. See page 2- -3 for important safety information. 8. CAL switch. For use by authorized service personnel only. 2- 19 TDS3000B Series Service Manual...
Page 52 1. GPIB port. Connect to a controller for remote programmability. 2. RS-232 port. Connect to a controller or terminal for remote programmability or printing. 3. VGA port. Connect to a VGA monitor to display the screen image. 2- 20 TDS3000B Series Service Manual...
Page 53 CH 1 2. Check the shape of the displayed waveform. Overcompensated Undercompensated Compensated correctly 3. If necessary, adjust your probe. P3010 P6139A Repeat as necessary. 2- 21 TDS3000B Series Service Manual...
Page 54 3. Push the System screen button to select Cal. 4. Push the Signal Path screen button. 5. Push OK Compensate Signal Path. This procedure takes several minutes to complete. NOTE. The signal path compensation does not include calibration to the probe tip. 2- 22 TDS3000B Series Service Manual...
Page 55 Use the supplied cord retainer if the power plug does not have a molded-in retainer. The oscilloscope front cover has a convenient place to store TDS3000B Series 1/4-size user and reference manuals. If you are not using a battery, you can use the accessory tray in the battery compartment to store probes and other accessories.
Page 56 Operating Information 2- 24 TDS3000B Series Service Manual...
Page 57 Theory of Operation...
Page 59: Figure 3- 1: Tds3000B Series Block Diagram
Ch 1 Ch 2 2-channel oscilloscopes Figure 3- 1: TDS3000B series block diagram Power Supply The power supply converts AC line voltage to 15 VDC to power all internal circuits and an external power connector. It also supplies power to charge the optional battery pack.
Page 60 Display System The display system combines live waveform data from acquisition memory with menus and text and stores this information in display memory. It then uses this data to refresh the VGA display module (LCD). 3- 2 TDS3000B Series Service Manual...
Page 61 Disk Drive The disk drive module consists of a 3.5 inch, IBM format, floppy disk drive. The disk drive is controlled by circuitry on the Main Board. 3- 3 TDS3000B Series Service Manual...
Page 62 Theory of Operation 3- 4 TDS3000B Series Service Manual...
Page 63 Performance Verification...
Page 65 NOTE. Successful completion of the performance verification procedure does not update the instrument Calibration Due date and time. Successful completion of the Adjustment Procedure in Section 5 does automati- cally update the instrument Calibration Due date and time. 4- 1 TDS3000B Series Service Manual...
Page 66 982.4 mV 1.018 V 50 mV/div 632.4 mV 667.6 mV 50 mV delta 340.5 mV 359.5 mV 90 mV/div --339.3 mV --290.7 mV 200 mV/div 9.900 V 10.10 V 1 V/div --10.30 V --9.698 V 4- 2 TDS3000B Series Service Manual...
Page 67 — trigger sensitivity trigger sensitivity falling slope stable trigger — at BW Channel 4 rising slope stable trigger — trigger sensitivity trigger sensitivity falling slope stable trigger — at BW 4- 3 TDS3000B Series Service Manual...
Page 68 50 MHz Channel 4 rising slope stable trigger — trigger sensitivity trigger sensitivity falling slope stable trigger — at 50 MHz Sample rate and delay time accuracy - - 2 divisions +2 divisions 4- 4 TDS3000B Series Service Manual...
Page 69 5. Push the Execute screen button. 6. Push the OK Confirm Run Test screen button. A dialog box displays the result when the self test completes. Push the MENU OFF screen button to continue operation. 4- 5 TDS3000B Series Service Manual...
Page 70 11. Push the MEASURE menu button. 12. Push the Select Measurement screen button. 13. Push the - - more - - screen button until you can select the Mean measure- ment. 14. Push the vertical MENU button. 4- 6 TDS3000B Series Service Manual...
Page 71 16. Repeat steps 15a through 15e for each row in the table. 17. Push the waveform off button. 18. Repeat steps 9 through 17 for each channel of the oscilloscope (not including the external trigger input). 4- 7 TDS3000B Series Service Manual...
Page 72 13. Set the horizontal SCALE to 10 ms/div. 14. Push the vertical MENU button. 15. Push the Coupling screen button and select 50 Ω input resistance. 16. Push the MEASURE menu button. 17. Push the Select Measurement screen button. 4- 8 TDS3000B Series Service Manual...
Page 73 600 MHz 24. Verify that the peak-to-peak measurement is ≥425 mV. 25. Push the waveform off button. 26. Repeat steps 11 through 25 for each channel of the oscilloscope (not including the external trigger input). 4- 9 TDS3000B Series Service Manual...
Page 74 14. Push the Coupling screen button and select 50 Ω input resistance. 15. Push the MEASURE menu button. 16. Push the Select Measurement screen button. 17. Push the - - more - - screen button until you can select the Pk-Pk measure- ment. 4- 10 TDS3000B Series Service Manual...
Page 75 26. Push the Slope screen button and select the / (rising) slope. 27. Push the waveform off button. 28. Repeat steps 11 through 27 for each channel of the oscilloscope (not including the external trigger input). 4- 11 TDS3000B Series Service Manual...
Page 76 15. Push the MEASURE menu button. 16. Push the Select Measurement screen button. 17. Push the - - more - - screen button until you can select the Pk-Pk measure- ment. 18. Set the vertical SCALE to 500 mV/div. 4- 12 TDS3000B Series Service Manual...
Page 77 26. Push the Slope screen button and select the / (rising) slope. 27. Push the waveform off button. 28. Repeat steps 11 through 27 for each channel of the oscilloscope (not including the external trigger input). 4- 13 TDS3000B Series Service Manual...
Page 78 12. Adjust the trigger LEVEL as necessary to obtain a triggered display. 13. Adjust the horizontal POSITION control to move the trigger location to the center of the screen (50%). 14. Push the DELAY button to turn delay on. 4- 14 TDS3000B Series Service Manual...
Page 79 17. Check that the rising edge of the marker crosses the center horizontal graticule line within ±2 divisions of center graticule. NOTE. One division of displacement from graticule center corresponds to a 10 ppm time base error. This completes the performance verification procedure. 4- 15 TDS3000B Series Service Manual...
Page 80 Performance Verification 4- 16 TDS3000B Series Service Manual...
Page 81 Adjustment Procedures...
Page 83 Adjustment Procedures This chapter contains the factory adjustment procedures for the TDS3000B series oscilloscopes. Only qualified personnel should perform adjustment procedures. Read the Service Safety Summary and the General Safety Summary before performing any service procedures. Also refer to the chapter Operating Information for information about using the oscilloscope.
Page 84 If all steps in the procedure are completed successfully, a “Pass” message is displayed and the new calibration constants take affect. If the procedure fails for any reason, the oscilloscope reverts to the previous calibration settings. 5- 2 TDS3000B Series Service Manual...
Page 85 DC voltage to the specified value. DC voltage source Four-channel oscilloscope Equal-length BNC cables BNC tees DC voltage Two-channel oscilloscope source Equal-length BNC cables BNC tee 5- 3 TDS3000B Series Service Manual...
Page 86 . If the leveled sine wave generator you are using has an output head, N O T E connect the head directly to the channel input. Make sure that the AC generator output is set for a 50-ohm load for all AC-source steps. 5- 4 TDS3000B Series Service Manual...
Page 87 DC voltage to the specified value. DC voltage source Oscilloscope Ext Trig . If the DC voltage source you are using has an output head, connect the N O T E head directly to the external trigger input. 5- 5 TDS3000B Series Service Manual...
Page 88 NOTE. Do not skip the Recall Factory Setup steps. You must recall the factory settings in order to correctly start the factory adjustment procedure. 7. Push the MENU OFF button. 5- 6 TDS3000B Series Service Manual...
Page 89 Incorrect use of calibration equipment can cause the oscilloscope to pass the adjustment procedure but fail performance verification. Refer to the note on page 5- -4 regarding possible injected noise for 0.000V DC input levels. 5- 7 TDS3000B Series Service Manual...
Page 90 Adjustment Procedures 5- 8 TDS3000B Series Service Manual...
Page 91 Maintenance...
Page 93 CAUTION. Static discharge can damage any semiconductor component in this instrument. 1. Minimize handling of static-sensitive modules. 2. Transport and store static-sensitive modules in their static protected containers or on a metal rail. Label any package that contains static-sensitive modules. 6- 1 TDS3000B Series Service Manual...
Page 94 Dirt acts as an insulating blanket, preventing efficient heat dissipa- tion. Dirt also provides an electrical conduction path that could cause an oscilloscope failure, especially under high-humidity conditions. 6- 2 TDS3000B Series Service Manual...
Page 95 Metal chassis pieces Bent, fractured, or broken pieces. Repair or replace defective hard- ware. Circuit boards Loose, broken, or corroded solder Remove failed module and replace connections. Burned circuit with a new module. boards. Burned, broken, or cracked circuit-run plating. 6- 3 TDS3000B Series Service Manual...
Page 96 6. 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. There is no periodic lubrication required for the oscilloscope. 6- 4 TDS3000B Series Service Manual...
Page 97 List of Modules The Mechanical Parts List chapter provides a list of all replaceable modules. Any electrical or mechanical module, assembly, or part listed in the parts list is referred to as a module. 6- 5 TDS3000B Series Service Manual...
Page 98 Module Display module Inverter cable Inverter board Display module Display Inverter board Inverter board 6- - 30 and backlights Backlight tubes Front panel Knobs 6- - 35 Front-panel board Flex circuit keypad contacts Keypads 6- 6 TDS3000B Series Service Manual...
Page 99 T-15 tips (If you are using a magnetic screwdriver with interchangeable bits, the T-15 bit must be a long bit, at least 5 cm (2 in) overall length). H Screwdriver with inch flat blade inch nut driver H Needle-nose pliers 6- 7 TDS3000B Series Service Manual...
Page 100: Figure 6- 1: Pulling The Hub Pin
The pin may be positioned at either the top or bottom of the hub assembly. Handle Assembly Metal Figure 6- 1: Pulling the hub pin 6- 8 TDS3000B Series Service Manual...
Page 101: Figure 6- 2: Releasing The Hub Assembly
You may need to rotate the handle up and down slightly to help release the hub assembly. See Figure 6- -2. Rotate the handle Pull out on the handle Figure 6- 2: Releasing the hub assembly 6- 9 TDS3000B Series Service Manual...
Page 102 2. Verify that the front and rear cases fit together tightly. 3. Grasp the handle from both sides and stretch it over the over the top of the oscilloscope. Rotate the handle into its full upright position. The Tektronix logo should appear right-side up when looking down on the handle.
Page 103: Figure 6- 3: Reinstalling A Hub Cover
3. Remove the communication module cover or any communication module that may be installed. 4. Lift the rear cover off of the oscilloscope chassis. 5. Remove both feet if necessary to replace them, otherwise leave the feet installed in the back cabinet. 6- 11 TDS3000B Series Service Manual...
Page 104: Figure 6- 4: Communication Module Guide
See Figure 6- -4. Note that there are alignment pins along the front edge of the module guide that insert into the main board when you reinstall the module guide. Chassis Communication module guide Figure 6- 4: Communication module guide 6- 12 TDS3000B Series Service Manual...
Page 105: Figure 6- 5: Main Board Disk Drive Flex Cable Connector J800
2. Install the communication module guide into the chassis. Make sure that the four pins on the module guide align with the four holes on the main board. Gently lift the rear chassis and insert the small tab in the chassis slot. 6- 13 TDS3000B Series Service Manual...
Page 106: Figure 6- 6: Removing The Bezel From A New Disk Drive
The rear case should fit over and capture the feet. 7. Press the rear case downward so that it is seated completely. 8. Install the screw below the parallel port connector. 6- 14 TDS3000B Series Service Manual...
Page 107 4. Lift the rear chassis assembly partially away from the front chassis. 5. Unplug the braided cable from the rear chassis BNC connector (four-channel models only). Note how the cable is routed for when you reassemble the instrument. 6- 15 TDS3000B Series Service Manual...
Page 108: Figure 6- 7: Rear Chassis Cables To The Main Board
AC line filter shield screw Line trigger connector J980 DC power connector J900 Display backlight power cable Ethernet connector J950 Parallel port ribbon connector J810 Figure 6- 7: Rear chassis cables to the main board 6- 16 TDS3000B Series Service Manual...
Page 109 3. If you are replacing the power supply board, remove the two screws that secure the power supply to the power supply bracket, and install the bracket on the new power supply board. 6- 17 TDS3000B Series Service Manual...
Page 110: Figure 6- 8: Installing The Fan, Line Filter, And Line Power Cable
The fan label should face toward the rear chassis. See Figure 6- -8. Label Fan cable hole Rear chassis Bend the tabs Figure 6- 8: Installing the fan, line filter, and line power cable 6- 18 TDS3000B Series Service Manual...
Page 111: Figure 6- 9: Installing The Ac Line Filter And Shield
Secure the AC shield/filter assembly with two screws. See Figure 6- -9. Line power conductor AC Filter shield Line filter Power supply board Figure 6- 9: Installing the AC line filter and shield 6- 19 TDS3000B Series Service Manual...
Page 112: Figure 6- 10: Installing The Line Filter And Line Power Cable
7. Attach the DC power cable to the power supply. 8. Connect the fan power cable to the battery board at J170. 9. Connect the DC power cable to the battery board at J180. 6- 20 TDS3000B Series Service Manual...
Page 113 TDS3000B instruments with serial numbers greater than those listed above use keyed cable and board connectors. 21. Connect the parallel printer port cable to the main board. See Figure 6- -7. 6- 21 TDS3000B Series Service Manual...
Page 114: Figure 6- 11: Removing The J500 Connector Clip
2. If present, remove the clip from the J500 connector. See Figure 6- -11. Clip sitting over the connector Figure 6- 11: Removing the J500 connector clip 6- 22 TDS3000B Series Service Manual...
Page 115: Figure 6- 12: Disconnect Main Board Cable Connectors
4. Grasp and pull up on the front-panel cable wires to disconnect the cable from J700 on the main board. See Figure 6- -12. Display cable connector J500 Front-panel connector J700 Figure 6- 12: Disconnect main board cable connectors 6- 23 TDS3000B Series Service Manual...
Page 116: Figure 6- 13: Main Board
H Always place the main board on your work surface with the pogo pins facing up H Do not apply any sideways force on the pogo pins, or slide any objects across the pogo pins, as they are easily bent 6- 24 TDS3000B Series Service Manual...
Page 117 J500 while seating the cable connector. 4. Push down on the two main board corners to engage the snaps. 5. If present, reinstall the J500 display cable connector clip. See Figure 6- -14. 6- 25 TDS3000B Series Service Manual...
Page 118: Figure 6- 14: Install The J500 Connector Clip
J500. 7. Connect the front-panel cable to the main board at J700. 6- 26 TDS3000B Series Service Manual...
Page 119: Figure 6- 15: Front Chassis
3. Lift the front chassis out of the front case. Lifting the left end of the chassis slightly ahead of the right end helps to clear a slight interference at the right end of the chassis. 6- 27 TDS3000B Series Service Manual...
Page 120: Figure 6- 16: Display Module
See Figure 6- -16. 6. Push the tabs through the chassis holes to remove the display module. Display chassis Chassis assembly Side up and push out Figure 6- 16: Display module 6- 28 TDS3000B Series Service Manual...
Page 121: Figure 6- 17: Front-Panel Cable Routing
6. Route the front panel cable through the cable post on the front panel and tuck part of the cable just under the bottom corner of the front panel board. See Figure 6- -17. Notch Front-panel cable Front chassis Cable post Figure 6- 17: Front-panel cable routing 6- 29 TDS3000B Series Service Manual...
Page 122: Figure 6- 18: Disconnect Back Light Cables
2. Disconnect the back light cables from the inverter board. See Figure 6- -18. Back light cables Display module Display chassis Inverter board assembly Figure 6- 18: Disconnect back light cables 6- 30 TDS3000B Series Service Manual...
Page 123: Figure 6- 19: Remove Inverter Board
Repeat for the other end of the inverter board. See Figure 6- -19C. Rotate inverter board and slide out Push tab in, lift end of board Inverter board Inverter chassis Lift tab Figure 6- 19: Remove inverter board 6- 31 TDS3000B Series Service Manual...
Page 124: Figure 6- 20: Remove Display From Display Chassis
Figure 6- 20: Remove display from display chassis 7. Lift the right side of the display, then pull the display to the right to clear the display from the tabs on the left side of the display chassis. 6- 32 TDS3000B Series Service Manual...
Page 125: Figure 6- 21: Remove Back Light Tube
See Figure 6- -21. Push tab down Display module Backlight tubes (2) Figure 6- 21: Remove back light tube 6- 33 TDS3000B Series Service Manual...
Page 126: Figure 6- 22: Installing Display Glass Shield
5. Press down firmly on the right side of the display until it clicks into place under the two display-chassis extended tabs. The tabs must be over the aluminum shield on the back of the display. 6- 34 TDS3000B Series Service Manual...
Page 127: Figure 6- 23: Remove Front-Panel Knobs
2. Remove the front-panel knobs by firmly pulling each knob away from the front panel. Careful prying with a small screwdriver or similar tool may be be necessary. See Figure 6- -23. Remove knobs (7) Figure 6- 23: Remove front-panel knobs 6- 35 TDS3000B Series Service Manual...
Page 128: Figure 6- 24: Remove Front-Panel Board
Figure 6- -24. Board snap (6) Board snap (5) Board snap (4) Board snap (2) Board snap (3) Board snap (1) Lift board from this corner Figure 6- 24: Remove front-panel board 6- 36 TDS3000B Series Service Manual...
Page 129: Figure 6- 25: Remove Front-Panel Keypads
6. Remove the front-panel and bezel button keypads by lifting them away from the front panel. Do not touch the keypad contacts or place them on a contaminated surface. See Figure 6- -25. Front panel keypad Bezel keypad Figure 6- 25: Remove front-panel keypads 6- 37 TDS3000B Series Service Manual...
Page 130: Figure 6- 26: Checking Front-Panel Lock Nuts
6. Route the front-panel cable as described in steps 5 and 6 on page 6- -29. 7. Install the front-panel knobs by firmly pushing each knob onto the front panel knob shaft. Align the flat side of the knob shaft with the flat part of the knob hole. 6- 38 TDS3000B Series Service Manual...
Page 131 Troubleshooting This section contains information and procedures to help you isolate a defective module in a TDS3000B series oscilloscope. W ARNING. Before doing this or any other procedure in this manual, read the General Safety Summary and Service Safety Summary found at the beginning of this manual.
Page 132: Figure 6- 27: Primary Troubleshooting Procedure
(Figure 6- - 28). Does Perform the Module Isolation troubleshooting procedure the scope pass all the (Figure 6- - 29). diagnostics? Done. Figure 6- 27: Primary troubleshooting procedure 6- 40 TDS3000B Series Service Manual...
Page 133: Figure 6- 28: Ac Power Supply Troubleshooting Procedure
+15 volts between pins Power Supply module. 1 and 6? AC power supply OK. Return the TDS3000B oscilloscope to the nearest Tektronix Service Center for repair. Figure 6- 28: AC power supply troubleshooting procedure 6- 41 TDS3000B Series Service Manual...
Page 134: Figure 6- 29: Module Isolation Troubleshooting Procedure
Front Panel (or Main board) Comm module (or Main board) Main board Disk Drive Main board (or disk unit or cable) App Modules Front Panel (or App keys) Figure 6- 29: Module isolation troubleshooting procedure 6- 42 TDS3000B Series Service Manual...
Page 135 Use a corrugated cardboard shipping carton having a test strength of at least 275 pounds (125 kg) and with an inside dimension at least six inches (15.25 cm) greater than the instrument dimensions. If the instrument is being shipped to a Tektronix Service Center, enclose the following information: H The owner’s address...
Page 136 Maintenance 6- 44 TDS3000B Series Service Manual...
Page 137 Options...
Page 139 Options The TDS3000B series options, listed in Table 7- -1, provide power cords and documentation packages for international customers. Table 7- 1: TDS3000B Series options Option Description North American power cord Universal European power cord Universal United Kingdom power cord...
Page 140 Options 7- 2 TDS3000B Series Service Manual...
Page 141 Electrical Parts List...
Page 143 Electrical Parts List Refer to the Mechanical Parts List chapter for a complete listing and description of replaceable parts for the oscilloscope. 8- 1 TDS3000B Series Service Manual...
Page 144 Electrical Parts List 8- 2 TDS3000B Series Service Manual...
Page 145 Diagrams...
Page 147 Diagrams See Figure 3- -1 on page 3- -1 for a block/interconnect diagram of the oscilloscope. There are no additional diagrams in this chapter. 9- 1 TDS3000B Series Service Manual...
Page 148 Diagrams 9- 2 TDS3000B Series Service Manual...
Page 149 Mechanical Parts List...
Page 151 Mechanical Parts List This chapter contains a list of the replaceable modules for the TDS3000B series oscilloscope. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative.
Page 152 Module Servicing Modules can be serviced by selecting one of the following three options. Contact your local Tektronix service center or representative for repair assistance. Module Exchange. In some cases you may exchange your module for a reman- ufactured module. These modules cost significantly less than new modules and meet the same factory specifications.
Page 153 C/O TEMCO NW HILLSBORO, OR 97123 1336 SE 51ST STREET TK6085 OXFORD WIRE & CABLE SERVICE INC 10 INDUSTRIAL DR OXFORD, MS 38655 TK6179 SPM/DYNACAST 22990 NW BENNETT ST HILLSBORO, OR 97124- - 5890 10- 3 TDS3000B Series Service Manual...
Page 154 Exploded Views Figures 10- -1 through 10- -5 on the following pages show the module-level exploded views of the TDS3000B series oscilloscope. The adjacent page is the list of components for that exploded view, indexed by the numbers in the figure.
Page 155 TK1163 366- - 0772- - 00 GRAY,0.425 DIA X 0.520 H - 1 - 0 - - - - 1 I S , TK1163 366- - 0771- - 00 GRAY,0.650 DIA X 0.520 H 10- 5 TDS3000B Series Service Manual...
Page 156 Mechanical Parts List Figure 10- 2: Exploded view, LCD display 10- 6 TDS3000B Series Service Manual...
Page 157 211- - 0927- - 00 SCREW,PT:K35- - 1.57 X 10.0MM,T10,STL,BLACK 0KB01 K35- - 1.57 X 10 PN PT STL/BLK 10-2-11 131- - 6643- - 00 CONTACT,ELEC:GROUNDING,0.169 L,0.320 TK2647 131- - 6643- - 00 DEEP,ELECTROLESS NICKEL,TDS3012 10- 7 TDS3000B Series Service Manual...
Page 158 Mechanical Parts List Figure 10- 3: Exploded view, main board and disk dive 10- 8 TDS3000B Series Service Manual...
Page 159 351- - 1025- - 00 GUIDE:OPTION MODULE,POLY,ABS TK6179 351- - 1025- - 00 ALLY,BAYBLEND FR- - 110 10-3-8 119- - 5677- - 00 DISK DRIVE:FLOPPY,3.5 INCH,1.44MB,BLACK,0.5 50356 FD- - 04HF- - 2300 INCH HIGH,DSDD,FD- - 04HF- - 2300, 10- 9 TDS3000B Series Service Manual...
Page 160 Mechanical Parts List Figure 10- 4: Exploded view, circuit board assembly and fan 10- 10 TDS3000B Series Service Manual...
Page 161 119- - 5848- - 00 CFM,92MM X 25MM,33 DBA,3610KL- - 05W- - B30- - P00, 10-4-12 211- - 0967- - 00 SCREW:6- - 32X 0.25,PNH,STL,ZI PLT,T- - 15, 0KB01 211- - 0967- - 00 W/CAPTIVE FLAT WASHER, 10- 11 TDS3000B Series Service Manual...
Page 162 SWITCH,PWR:DPDT,PUSH PUSH ALT ACT,PC PINS 31918 NE18- - 00- - EE- - N- - 47- - 0 1A (130238) 10-4-20 384- - 1813- - 00 SHAFT:BAYBLEND FR110,SILVER GREY TK6179 384- - 1813- - 00 10- 12 TDS3000B Series Service Manual...
Page 163 Mechanical Parts List Figure 10- 5: Exploded view, rear case half 10- 13 TDS3000B Series Service Manual...
Page 164 10-5-7 343- - 1213- - 00 CLAMP,PWR CORD:POLYMIDE TK1163 ORDER BY DESCR 10-5-8 050- - 3514- - XX PARTS REPL KIT:REAR CASE, TDS3000B SERIES 80009 050- - 3514- - XX 10-5-9 348- - 1582- - 00 FOOT ASSY:FRONT,HINGED,HOUSING 7X318 348- - 1582- - 00...
Page 165 RM3000 RACK MOUNT KIT ORDER BY DESC _________ AD007 GPIB TO LAN ADAPTER ORDER BY DESC _________ TDSPCS1 OPENCHOICE SOLUTIONS SOFTWARE ORDER BY DESC FOR OSC _________ WSTRO WAVESTAR SOFTWARE FOR OSC ORDER BY DESC 10- 15 TDS3000B Series Service Manual...
Page 166 Mechanical Parts List 10- 16 TDS3000B Series Service Manual...

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