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Tektronix 4000 Series Service Manual

Digital phosphor oscilloscopes
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Enlarged version
Service Manual
Tektronix 4000 Series
Digital Phosphor Oscilloscopes
071-2137- -00
This document applies to firmware version 2.00
and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com

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Summary of Contents for Tektronix 4000 Series

  • Page 1 Service Manual Tektronix 4000 Series Digital Phosphor Oscilloscopes 071-2137- -00 This document applies to firmware version 2.00 and above. Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so.
  • 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: Table Of Contents

    ........5- - 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 4 Inverter board, and side fans ......5- -21 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 5: General Safety Summary

    Do Not Operate in an Explosive Atmosphere. Keep Product Surfaces Clean and Dry. Provide Proper Ventilation. Refer to the manual’s installation instructions for details on installing the product so it has proper ventilation. Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 6 H CAUTION indicates a hazard to property including the product. The following symbols may appear on the product: Protective Ground CAUTION Mains Connected Push button OUT Chassis Ground Refer to Manual (Earth) Terminal ON (Power) Push button Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 7: 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. Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 8 Service Safety Summary Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 9: Environmental Considerations

    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. Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 10 Environmental Considerations viii Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 11: Preface

    Preface This service manual provides information that you need to troubleshoot, disassemble, and replace parts on the Tektronix 4000 Series Digital Phosphor Oscilloscopes. Manual Conventions This manual uses certain conventions that you should become familiar with before attempting service. Modules Throughout this manual, any replaceable component, assembly, or part is referred to by the term module.
  • Page 12 Preface To read about Use these documents Installing and testing applica- Tektronix 4000 Series Application Modules Installation tions modules Instructions Manual Oscilloscope calibrator Fluke Oscilloscope Calibrator Manual at http://us.fluke.com Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 13: Operating Information

    Operating Information...
  • Page 15 Operating Information For information on installing and operating your DPO4000 or your MSO4000 Series Digital Phosphor Oscilloscope, refer to the Tektronix 4000 Series Digital Phosphor Oscilloscopes User Manual. This manual is available, in 11 languages, on the Web at www.tektronix.com.
  • Page 16 Operating Information 1- 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 17: Theory Of Operation

    Theory of Operation...

  • Page 19: Block Diagrams

    Attenuator circuit Ethernet port Ch 1 Ch 2 Ch 4 Aux in 4-channel oscilloscopes Ch 3 Ch 1 Ch 2 Aux in 2-channel oscilloscopes Figure 2- 1: Oscilloscope module interconnections 2- 1 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 20: Power Supply

    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 XGA display module (LCD). 2- 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 21: Front- Panel Board

    Main board. The Front Panel board also generates the probe compensation output signal and provides an interface to the application modules. 2- 3 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 22 Theory of Operation 2- 4 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 23: Adjustment Procedures

    Adjustment Procedures...

  • Page 25: Required Equipment

    Before performing any procedure in this chapter, do the Performance Verification procedures to check whether the oscilloscope meets specifications. See the Tektronix 4000 Series Technical Reference documentation. Successful completion of this adjustment procedure automatically updates the stored time and date of the latest successful adjustment.

  • Page 26: Overview Of The Adjustment Process

    Procedure section for specific instructions and troubleshooting information. To complete the calibration procedure, you must know how to operate the oscilloscope calibrator. Please refer to the user manual, which can be found at http://us.fluke.com. 3- 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 27 To cancel the calibration procedure, press the Menu Off front panel button on the oscilloscope. This reverts the oscilloscope to the old calibration constants. 3- 3 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 28: Factory Adjustment Procedure

    5. Power off the oscilloscope. Locate the hole in the rear panel that provides access to the CAL switch, as shown in Figure 3- -1. Figure 3- 1: Rear panel 3- 4 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 29 9. Push the Utility Page lower- -bezel button. The utility page menu appears, as shown in Figure 3- -2. Figure 3- 2: Utility page menu 10. Use the Multipurpose a knob to select Calibration, as shown in Figure 3- -3. 3- 5 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 30: Figure 3- 3: Calibration Selection

    Adjustment Procedures Figure 3- 3: Calibration selection 11. Push the Factory lower- -bezel button. The information dialog appears, as shown in Figure 3- -4. Figure 3- 4: Factory information dialog 3- 6 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 31 MENU OFF button. 15. Complete the performance verification tests to verify that the adjustment procedure has correctly calibrated the oscilloscope. (See the Tektronix 4000 Series Technical Reference.) Incorrect use of calibration equipment can cause the oscilloscope to pass the Calibration Procedure but fail Performance Verification.

  • Page 32: Completing The Procedure

    Push the lower- -bezel button until 1.0 is selected. H For 6 V or - -6 V: a. Push the AUX front panel button. 3- 8 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 33 -panel button. 2. Push the WAVEFORM lower- -bezel button, and then push the side- -bezel button. NOTE. If a 625 Hz signal is required, set the time marker to 1.6 ms. 3- 9 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 34: Figure 3- 5: Digital Channel Input

    5. Ensure that the red light is illuminated to indicate that the output is on. If not, push the ON button. 6. On the oscilloscope, push the OK Do Next Step right- -bezel button. In some cases, this can take several minutes. 3- 10 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 35 625 Hz. I can’t set the signal to all If you are unable to set the signal to all channels, try setting channels the signal to Channel 1. 3- 11 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 36 V test (6 V on Channel 1) and start the sequence over again. The Sine Signal test failed If the prompt specified Channel 4, try setting the signal to Channel 5, instead. 3- 12 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 37: Maintenance

    Maintenance...

  • Page 39: Preventing Esd

    Inspection and Cleaning Inspection and cleaning are done as preventive maintenance. Preventive maintenance, when done regularly, may prevent oscilloscope malfunction and enhance its reliability. 4- 1 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 40: General Care

    If any dirt remains, use a cloth or swab dipped in a 75% isopropyl alcohol solution. Use a swab to clean narrow spaces around controls and connectors. Do not use abrasive compounds on any part of the chassis that may damage the chassis. 4- 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 41: Table 4- 1: External Inspection Check List

    CAUTION. To prevent getting moisture inside the oscilloscope during external cleaning, use only enough liquid to dampen the cloth or applicator. 4- 3 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 42: Table 4- 2: Internal Inspection Check List

    Firmly seat connectors. Repair or Burned, broken, or frayed wiring. replace modules with defective wires or cables. Chassis Dents, deformations, and dam- Straighten, repair, or replace aged hardware. defective hardware. 4- 4 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 43 3. Use hot (120 _F to 140 _F) deionized water to thoroughly rinse them. 4. Dry all parts with low-pressure, deionized air. 5. Dry all components and assemblies in an oven or drying compartment using low-temperature (125 _F to 150 _F) circulating air. 4- 5 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 44: Overview Of Removal Procedures

    Use the following tables to remove the trim, cabinet, and internal modules. Removal WARNING. Before doing any procedure in this subsection, disconnect the power cord from the line voltage source. Failure to do so could cause serious injury or death. 4- 6 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 45: Figure 4- 1: Locator For Trim And Cabinet Removal

    Maintenance Rear case Front foot Front cover Figure 4- 1: Locator for trim and cabinet removal 4- 7 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 46: Removal Procedures

    The oils on your fingers will degrade or damage the switch contacts. To help prevent damage to the keypad, use cotton gloves when removing or installing the keyboard pad. 4- 8 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 47 1. Remove the 3 screws that attach the Power Supply cover. 2. Lift off the Power Supply cover. 3. Remove the 4 screws that attach the Power Supply board to the Power Supply bracket. 4- 9 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 48 2. Remove the Inverter board from the plastic bracket. 3. Remove the 2 screws that hold the Inverter board bracket to the Main board. 4. Remove the Inverter board bracket from the Main board. 4- 10 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 49 See Figure 5- -2 on page 5- -7. 1. Remove the 9 screws holding the Front Panel board to the chassis. 2. Lift the Front Panel board off of the chassis. 4- 11 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 50: Troubleshooting

    Adjustment Procedures section, beginning on page 3- -1, for information about the adjustment. Required Tools and You need the following equipment to troubleshoot the instrument. Equipment Tools and Equipment Example 3.5 or above 4- 12 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 51: Troubleshooting Procedure

    (Figure 4- - 4). screen? Does Perform the Module Isolation the instrument pass troubleshooting procedure all the (Figure 4- - 5). diagnostics? Done. Figure 4- 3: Primary troubleshooting procedure 4- 13 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 52: Figure 4- 4: Ac Power Supply Troubleshooting Procedure

    Supply module. connector pins ? AC Power Supply module OK. Return the MSO4000 oscilloscope to the nearest Tektronix Service Center for repair. Figure 4- 4: AC power supply troubleshooting procedure 4- 14 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 53: Figure 4- 5: Module Isolation Troubleshooting Procedure

    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- 5: Module isolation troubleshooting procedure 4- 15 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 54: Unpacking And Repacking Instructions

    H Temperature range: - -20 °C to +60 °C H Altitude: To 15,000 m See the Tektronix 4000 Series Technical Reference for a complete listing of the environmental characteristics. 4- 16 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 55: Mechanical Parts List

    Mechanical Parts List...

  • Page 57: Parts Ordering Information

    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.

  • Page 58: Using The Replaceable Parts List

    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.
  • Page 59 Figures 5- -1 through 5- -8 on the following pages show the module-level exploded views of the DPO4000 Series and the MSO4000 Series oscilloscopes. Each exploded view is indexed by the numbers in the figure. 5- 3 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 60 MATERIAL; 6- - 32 X 0.312 L,PNH,STL CAD PLT,T15 - - 4 335- - 1186- - 00 MARKER,IDENT;LABEL,REAR PANEL - - 5 348- - 1798- - 00 FOOT, FRONT ASSEMBLY 5- 4 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 61: Figure 5- 1: Exploded View, Case

    Mechanical Parts List Figure 5- 1: Exploded view, case 5- 5 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 62 ASSEMBLY, LCD DISPLAY 174- - 5014- - 00 CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX 211- - 1174- - 00 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING MATERIAL; 6- - 32 X 0.312 L,PNH,STL CAD PLT,T15 5- 6 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 63: Figure 5- 2: Exploded View: Dpo4000 Front Panel And Display, 4-Channel Instruments

    Mechanical Parts List Flex Circuit Figure 5- 2: Exploded view: DPO4000 front panel and display, 4-channel instruments 5- 7 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 64 ASSEMBLY, LCD DISPLAY 174- - 5014- - 00 CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX 211- - 1174- - 00 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING MATERIAL; 6- - 32 X 0.312 L,PNH,STL CAD PLT,T15 5- 8 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 65: Figure 5- 3: Exploded View: Mso4000 Front Panel And Display, 4-Channel Instruments

    Mechanical Parts List Flex Circuit Figure 5- 3: Exploded view: MSO4000 front panel and display, 4-channel instruments 5- 9 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 66 200- - 4906- - 00 COVER;BNC FILLER - - 6 366- - 0860- - 01 KNOB, .685 DIA, SOFT TOUCH - - 7 366- - 0859- - 01 KNOB, .470 DIA, SOFT TOUCH 5- 10 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 67: Figure 5- 4: Exploded View: Dpo4000 Front Panel And Display, 2-Channel Instruments

    Mechanical Parts List Figure 5- 4: Exploded view: DPO4000 front panel and display, 2-channel instruments 5- 11 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 68 200- - 4906- - 00 COVER;BNC FILLER - - 6 366- - 0860- - 01 KNOB, .685 DIA, SOFT TOUCH - - 7 366- - 0859- - 01 KNOB, .470 DIA, SOFT TOUCH 5- 12 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 69: Figure 5- 5: Exploded View: Mso4000 Front Panel And Display, 2-Channel Instruments

    Mechanical Parts List Figure 5- 5: Exploded view: MSO4000 front panel and display, 2-channel instruments 5- 13 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 70 335- - 1213- - 01 MARKER,IDENT;LABEL,REAR PANEL,LEFT - - 9 335- - 1738- - 00 MARKER,IDENT;LABEL,REAR PANEL, RIGHT 337- - 4378- - 00 SHIELD;INSULATOR,ELECTRICAL 131- - 6643- - 00 GROUNDING CLIPS 5- 14 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 71: Figure 5- 6: Exploded View: Dpo4000 Power Supply And I/O Board

    Mechanical Parts List I/O board assemly J310 Main board J780 Main board J850 Figure 5- 6: Exploded view: DPO4000 Power Supply and I/O board 5- 15 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 72 335- - 1213- - 01 MARKER,IDENT;LABEL,REAR PANEL,LEFT - - 9 335- - 1738- - 00 MARKER,IDENT;LABEL,REAR PANEL, RIGHT 337- - 4378- - 00 SHIELD;INSULATOR,ELECTRICAL 131- - 6643- - 00 GROUNDING CLIPS 5- 16 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 73: Figure 5- 7: Exploded View: Mso4000 Power Supply And I/O Board

    Mechanical Parts List I/O board assemly J310 Main board J780 Main board J850 Figure 5- 7: Exploded view: MSO4000 Power Supply and I/O board 5- 17 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 74 174- - 5014- - 00 CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX - - 9 211- - 1174- - 00 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING MATERIAL; 6- - 32 X 0.312 L,PNH,STL CAD PLT,T15 5- 18 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 75: Figure 5- 8: Exploded View: Dpo4000 Main Board, Inverter Board, And Side Fans

    Main board Inverter board assembly J570 J571 Main board J930 I/O board assemly J610 Main board Figure 5- 8: Exploded view: DPO4000 Main board, Inverter board, and side fans 5- 19 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 76 CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX - - 9 211- - 1174- - 00 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING MATERIAL; 6- - 32 X 0.312 L,PNH,STL CAD PLT,T15 351- - 1115- - 00 PROBE GUIDE 5- 20 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

  • Page 77: Figure 5- 9: Exploded View: Mso4000 Main Board, Inverter Board, And Side Fans

    Main board Inverter board assembly J570 J571 Main board J930 I/O board assemly J610 Main board Figure 5- 9: Exploded view: MSO4000 Main board, Inverter board, and side fans 5- 21 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...
  • Page 78 161- - 0304- - 00 CABLE ASSY,PWR; 3,1.0MM SQ,250V/10A,2.5 ME- TER,STR,IEC320,3C CERTIFICATION,RCPT,SAFETY CONTROLLED (OPTION A10 - - CHINA) 016- - 1967- - 00 POUCH, PLASTIC:POUCH 020- - 2662- - 00 MSO4000 ACCESSORY PACKAGE P6516 5- 22 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual...

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