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TDS3000C Series Digital Phosphor Oscilloscopes 071-2507-00 This document supports firmware version 4.00 and above for TDS3000C 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.
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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. TDS3000C Series Service Manual...
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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. TDS3000C Series Service Manual...
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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. TDS3000C Series Service Manual...
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General Safety Summary viii TDS3000C Series Service Manual...
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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. TDS3000C Series Service Manual...
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Service Safety Summary TDS3000C Series Service Manual...
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Preface This Service manual provides information to troubleshoot, disassemble, and repair the following TDS3000C Series Digital Phosphor Oscilloscopes instru- ment to the module level: H TDS3012C H TDS3014C H TDS3032C H TDS3034C H TDS3052C H TDS3054C TDS3000C Series Service Manual...
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H Probe compensation H Self calibration H Transporting the oscilloscope For details about operating information, see the TDS3000C Series Digital Phosphor Oscilloscope User Manual. For information about unpacking and inspecting the instrument, see Unpacking and Repacking Instructions on page 4- -39 of this manual.
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( ) 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. 1- 2 TDS3000C Series Service Manual...
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, >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...
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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. 1- 4 TDS3000C Series Service Manual...
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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. 1- 5 TDS3000C Series Service Manual...
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Battery charging in oscilloscope with oscillo- 32 hours scope turned on or off Battery charging with TDS3CHG external 6 hours charger NOTE. Charge the battery before using it for the first time or after prolonged storage. 1- 6 TDS3000C Series Service Manual...
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Application modules Contacts Refer to the TDS3000, TDS3000B, and TDS3000C Series Application Module Installation manual 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.
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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 1- 8 TDS3000C Series Service Manual...
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1. Push a front-panel menu button to display the menu you want to use. 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. 1- 9 TDS3000C Series Service Manual...
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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. 1- 10 TDS3000C Series Service Manual...
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4. Display. Changes the appearance of waveforms and the display screen. 5. QuickMenu. Activates QuickMenus such as the built-in Scope QuickMenu. 6. Utility. Activates the system utility functions, such as selecting a language. 1- 11 TDS3000C Series Service Manual...
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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. 1- 12 TDS3000C Series Service Manual...
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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. 1- 13 TDS3000C Series Service Manual...
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21. Power. 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. 1- 14 TDS3000C Series Service Manual...
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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. 1- 15 TDS3000C Series Service Manual...
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For example, if you want to add an automatic measurement, push the Meas button to set up the measurement. Then, push the QuickMenu button to return to the Scope QuickMenu with the measurement also in the display. 1- 16 TDS3000C Series Service Manual...
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Those items are described on page 1- -15. Other QuickMenus. Some optional application packages include a custom QuickMenu display. Those QuickMenus contain specific features that are important for the application. 1- 17 TDS3000C Series Service Manual...
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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. 1- 18 TDS3000C Series Service Manual...
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5. Ground terminal. Connect to earth ground when using battery power. See page 1- -3 for important safety information. 6. CAL switch. For use by authorized service personnel only. 1- 19 TDS3000C Series Service Manual...
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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. 1- 20 TDS3000C Series Service Manual...
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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. 1- 21 TDS3000C Series Service Manual...
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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. 1- 22 TDS3000C Series Service Manual...
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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 TDS3000C 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.
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Operating Information 1- 24 TDS3000C Series Service Manual...
Ch 1 Ch 2 2-channel oscilloscopes Figure 2- 1: TDS3000C series block diagram Power Supply The power supply converts AC line voltage to 15 VDC to power all internal circuits. It also supplies power to charge the optional battery pack.
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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). 2- 2 TDS3000C Series Service Manual...
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The front-panel board also generates the probe compensation output signal and provides an interface to the application modules. USB Port The front panel USB Flash Drive port is a host port. This port is only for use with a USB flash drive. 2- 3 TDS3000C Series Service Manual...
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Theory of Operation 2- 4 TDS3000C Series Service Manual...
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Adjustment Procedures This chapter contains the factory adjustment procedures for the TDS3000C 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.
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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. 3- 2 TDS3000C Series Service Manual...
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DC voltage to the specified value. DC voltage Four-channel oscilloscope source Equal-length BNC cables BNC tees DC voltage Two-channel oscilloscope source Equal-length BNC cables BNC tee 3- 3 TDS3000C Series Service Manual...
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NOTE. If the leveled sine wave generator you are using has an output head, 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. 3- 4 TDS3000C Series Service Manual...
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DC voltage to the specified value. DC voltage source Oscilloscope Ext Trig NOTE. If the DC voltage source you are using has an output head, connect the head directly to the external trigger input. 3- 5 TDS3000C Series Service Manual...
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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. 3- 6 TDS3000C Series Service Manual...
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14. Do the performance verification tests (found in the Specifications and Performance Verification technical reference, available on the Web at www.tektronix.com/manuals) to verify that the adjustment procedure has correctly calibrated the oscilloscope. Incorrect use of calibration equipment can cause the oscilloscope to pass the adjustment procedure but fail performance verification.
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Adjustment Procedures 3- 8 TDS3000C Series Service Manual...
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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. 4- 1 TDS3000C Series Service Manual...
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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. 4- 2 TDS3000C Series Service Manual...
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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. 4- 3 TDS3000C Series Service Manual...
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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. 4- 4 TDS3000C Series Service Manual...
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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. 4- 5 TDS3000C Series Service Manual...
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Display module Front-panel USB port Inverter cable Inverter board Display module Display Inverter board Inverter board NO TAG and backlights Backlight tubes Front panel Knobs 4- - 30 Front-panel board Flex circuit keypad contacts Keypads 4- 6 TDS3000C Series Service Manual...
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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 H Needle-nose pliers 4- 7 TDS3000C Series Service Manual...
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6 mm (0.25 in). If you accidentally pull the metal pin all the way out, reinsert it half way. The pin may be positioned at either the top or bottom of the hub assembly. 4- 8 TDS3000C Series Service Manual...
7. Pull outward on the handle at the hub to release the display-side hub assembly. You may need to rotate the handle up and down slightly to help release the hub assembly. See Figure 4- -2. 4- 9 TDS3000C Series Service Manual...
If the hub does not rotate with the handle, return the handle to the down position, pull the pin out a little farther, and then rotate the handle toward the top of the oscilloscope. 4- 10 TDS3000C Series Service Manual...
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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.
1. Place the oscilloscope face down on soft surface (such as an anti-static mat), with the bottom facing you. 2. Remove the T-15 TORX screw just above the power plug. 3. Remove the communication module cover or any communication module that may be installed. 4- 12 TDS3000C Series Service Manual...
Installation. Use this procedure to install the communication module guide, feet, rear case, and communication module cover. 1. Place the oscilloscope face down on soft surface (such as an anti-static mat), with the bottom facing you. 4- 13 TDS3000C Series Service Manual...
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3. Turn the oscilloscope around so the top is facing you, and disconnect the following cables (see Figure 4- -5): a. Rear USB cable from main board connector J815. b. Ethernet cable from main board connector J920. 4- 14 TDS3000C Series Service Manual...
6. 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. Figure 4- 5: Rear chassis cables to the main board 4- 15 TDS3000C Series Service Manual...
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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. 4- 16 TDS3000C Series Service Manual...
The fan label should face toward the rear chassis. See Figure 4- -6. Label Fan cable hole Rear chassis Bend the tabs Figure 4- 6: Installing the fan, line filter, and line power cable 4- 17 TDS3000C Series Service Manual...
Secure the AC shield/filter assembly with two screws. See Figure 4- -7. Line power conductor AC Filter shield Line filter Power supply board Figure 4- 7: Installing the AC line filter and shield 4- 18 TDS3000C Series Service Manual...
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. 4- 19 TDS3000C Series Service Manual...
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20. Turn the oscilloscope around so the top is facing you, and connect the following cables (see Figure 4- -5): a. Rear USB cable to main board connector J815 b. Ethernet cable to main board connector J920 4- 20 TDS3000C Series Service Manual...
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6. Release the two snaps that hold the main board (see Figure 4- -9). Lift the main board out of the front-panel assembly. 7. Use the inch flat-bladed screwdriver to carefully lift the display cable from connector J500 on the main board. See Figure 4- -9. 4- 21 TDS3000C Series Service Manual...
H Do not apply any sideways force on the pogo pins, or slide any objects across the pogo pins, as they are easily bent H If replacing the main board, place the old main board on the main board foam carrier that came with the new main board 4- 22 TDS3000C Series Service Manual...
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CAUTION. Make sure that the lower legs of the connector clip are not in contact with any components on the bottom of the circuit board. Board damage may result. 5. Push down on the two main board corners to engage the snaps. 4- 23 TDS3000C Series Service Manual...
10. On four-channel models, use Kapton tape to secure the trigger cable to the side of the chassis. Arrange the cable for the most clearance between the trigger cable and the display cable. 4- 24 TDS3000C Series Service Manual...
4. Place the front chassis with the display facing you. See Figure 4- -13. 5. Use your thumbs to slide the top display module tabs up until the overhang- ing part of the tabs clear the chassis holes. See Figure 4- -13. 4- 26 TDS3000C Series Service Manual...
3. Use your thumbs to slide all four display module tabs down as far as possible to lock the display module in place on the front chassis. 4. Place the oscilloscope face down on a soft surface (such as an anti-static mat), with the bottom facing you. 4- 27 TDS3000C Series Service Manual...
8. Route the front-panel cable through the notch located on the bottom edge of the front chassis. See Figure 4- -14. 9. Use the TORX T-10 screwdriver to insert the two screws that secure the front chassis to the front case. 4- 28 TDS3000C Series Service Manual...
3. Insert the USB connector into the front chassis. The connector will only fit into the chassis cutout when it is in the correct orientation. Push the connector in until it snaps into place. 4- 29 TDS3000C Series Service Manual...
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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 4- -16. Remove knobs (7) Figure 4- 16: Remove front-panel knobs 4- 30 TDS3000C Series Service Manual...
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Figure 4- -17. Board snap (6) Board snap (5) Board snap (4) Board snap (2) Board snap (3) Board snap (1) Lift board from this corner Figure 4- 17: Remove front-panel board 4- 31 TDS3000C Series Service Manual...
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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 4- -18. Front panel keypad Bezel keypad Figure 4- 18: Remove front-panel keypads 4- 32 TDS3000C Series Service Manual...
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6. Route the front-panel cable as described in steps 5 and 6 on page 4- -28. 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. 4- 33 TDS3000C Series Service Manual...
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Maintenance 4- 34 TDS3000C Series Service Manual...
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Troubleshooting This section contains information and procedures to help you isolate a defective module in a TDS3000C series oscilloscope. WARNING. 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.
(Figure 4- - 21). Does Perform the Module Isolation the scope pass all the troubleshooting procedure diagnostics? (Figure 4- - 22). Done. Figure 4- 20: Primary troubleshooting procedure 4- 36 TDS3000C Series Service Manual...
+15 volts between pins Power Supply module. 1 and 6? AC power supply OK. Return the TDS3000C oscilloscope to the nearest Tektronix Service Center for repair. Figure 4- 21: AC power supply troubleshooting procedure 4- 37 TDS3000C Series Service Manual...
Main board Main board Display Main board Front Panel Front Panel (or Main board) Comm module (or Main board) Main board App Modules Front Panel (or App keys) Figure 4- 22: Module isolation troubleshooting procedure 4- 38 TDS3000C Series Service Manual...
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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...
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Maintenance 4- 40 TDS3000C Series Service Manual...
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Options The TDS3000C series options, listed in Table 5- -1, provide power cords and documentation packages for international customers. Table 5- 1: TDS3000C Series options Option Description North America power Universal EURO power United Kingdom power Australia power Switzerland power...
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Options 5- 2 TDS3000C Series Service Manual...
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670-7918-03 670-7918-XX 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.
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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.
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Items in this section are referenced by figure and index numbers to the exploded view illustrations that precede the list Tektronix part number Use this part number when ordering replacement parts from Tektronix 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.
Replaceable Parts List Figure 6- 1: Exploded view, front case half 6- 4 TDS3000C Series Service Manual...
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200- - 4416- - 01 COVER:FRONT,PROTECTIVE,13.850 X 7.090 X 2.050,PC/ABS,FR110,BLUE 366- - 0772- - 00 KNOB,CAP:PC/ABS BAYBLEND FR110,SIVER GRAY,0.425 DIA X 0.520 H 366- - 0771- - 00 KNOB,CAP:PC/ABS BAYBLEND FR110,SILVER GRAY,0.650 DIA X 0.520 H 6- 5 TDS3000C Series Service Manual...