Tektronix WFM700 Series Service Manual
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Tektronix WFM700 Series Service Manual

Tektronix WFM700 Series Service Manual

Waveform monitors
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Service Manual

WFM700 Series
Waveform Monitors
071-0915-04
This document applies to firmware version 1.3.0
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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  • Page 1: Service Manual

    Service Manual WFM700 Series Waveform Monitors 071-0915-04 This document applies to firmware version 1.3.0 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, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077...
  • Page 3 Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.
  • Page 5 ..........2- - 9 WFM700 Audio (Option DG) Performance Verification Procedure ..
  • Page 6 ........5- - 2 WFM700 Series Waveform Monitors Service Manual...

  • Page 7: Table Of Contents

    Table of Contents List of Figures Figure 1- -1: WFM700 signal flow block diagram ....1- -8 Figure 1- -2: Control flow block diagram ..... . .
  • Page 8 ......4- -8 Figure 4- -2: WFM700 chassis cover, showing screws to loosen and remove ..........
  • Page 9 ....... . . 4- -32 WFM700 Series Waveform Monitors Service Manual...
  • Page 10 Table of Contents WFM700 Series Waveform Monitors Service Manual...
  • Page 11 Do Not Operate in Wet/Damp Conditions. 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. WFM700 Series Waveform Monitors Service Manual...
  • Page 12 CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product: Protective Ground CAUTION WARNING Refer to Manual High Voltage (Earth) Terminal viii WFM700 Series Waveform Monitors Service Manual...

  • Page 13: 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. WFM700 Series Waveform Monitors Service Manual...
  • Page 14 Service Safety Summary WFM700 Series Waveform Monitors Service Manual...
  • Page 15 Manual Content This manual contains only information related to servicing the WFM700 instrument. For information related to installing and operating the instrument or for a list of instrument specifications, refer to the appropriate user document as described in Related User Documents on the following page.
  • Page 16 WFM700 Series SNMP MIB Reference (English). Describes the syntax of the variables and traps for remotely controlling the instrument over a network using SNMP.
  • Page 17 Preface Related Reference Documents The following related reference documents are available at the Tektronix, Inc. website (www.tektronix.com): Preventing Illegal Colors. This application note describes how the Diamond, Arrowhead, and Lightning displays on the waveform monitor can be used to help prevent the undesired impact of color gamut violations and to simplify the assessment of proper gamut compliance.

  • Page 18: Contacting Tektronix

    This phone number is toll free in North America. After office hours, please leave a voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix Web site for a list of offices. WFM700 Series Waveform Monitors Service Manual...
  • Page 19 Theory of Operation...

  • Page 21: Operating Conditions 1

    Input Module (in either slots 1 or 2 of the WFM700 mainframe). The applied video signal is sent to SD and HD equalizers (to compensate for signal degradation due to cable loss) and to the eye sampler.

  • Page 22: Individual Module Descriptions 1

    Environmental Controller (on the Main Interface board) via an RS232 connec- tion. Power for the WFM700 is provided by the power supply module. The power supply module accepts line input voltages within the range of 100 VAC to 240 VAC. Anytime line input voltage is supplied to the power supply module, a...
  • Page 23 This signal is only valid when the instrument is in Jitter mode. Any signal present on this output at other times is not a calibrated jitter signal. 1- 3 WFM700 Series Waveform Monitors Service Manual...
  • Page 24 Theory of Operation Reference Module The External Reference module provides synchronization for the WFM700 instrument, allowing you to sync the display to an analog video input. The Reference Module accepts PAL and NTSC signals with bi-level sync (SD) or tri-level sync (HD) input, so that timing of the SDI input signals can be compared to the analog sync reference.
  • Page 25 This output can be used to drive an external monitor to produce the same display as seen on the LCD. External Connectors EXT VGA. Provides an exact copy of the LCD screen to drive an external monitor. 1- 5 WFM700 Series Waveform Monitors Service Manual...
  • Page 26 640x480 VGA display format. The Rasterizer output is applied to the color LCD display after it is combined with any text and graticules from the VGA controller. 1- 6 WFM700 Series Waveform Monitors Service Manual...

  • Page 27: Diagrams 1

    Figure 1- -1 on page 1- -8 is a block diagram of the signal flow of the instrument. Figure 1- -2 on page 1- -9 is a block diagram of the control flow. 1- 7 WFM700 Series Waveform Monitors Service Manual...

  • Page 28: Figure 1- 1: Wfm700 Signal Flow Block Diagram

    Picture Mode Rasterizer Processing VGA MUX Measurement Polyphase Fast Static Processing Interpolator Memory Front panel controls Power Supply and touch screen output Panel Module Figure 1- 1: WFM700 signal flow block diagram 1- 8 WFM700 Series Waveform Monitors Service Manual...

  • Page 29: Figure 1- 2: Control Flow Block Diagram

    RS232 Environmental On-Off Controller “EC” VGA MUX RS232 Power Supply Module Housekeeping Supply Main Power Front panel controls Supply Power Relay and touch screen Panel Figure 1- 2: Control flow block diagram 1- 9 WFM700 Series Waveform Monitors Service Manual...
  • Page 30 Theory of Operation 1- 10 WFM700 Series Waveform Monitors Service Manual...
  • Page 31 Performance Verification...

  • Page 33: Prerequisites 2

    WFM700. Two Video Modules — The verification procedures must be performed on both video modules if two are installed in the WFM700. Complete the entire performance procedures on one video module at a time. Audio Module — The verification procedure for the Option DG Audio module must be performed if the module is installed in the WFM700.

  • Page 34: Table 2- 1: Test Equipment For Performance Verification

    Digital audio generator/ 35 kHz to 96 kHz sample rate range, jitter Rohde & Schwarz UPL06 Opt analyzer measurement per AES- - 3 (1997) B22, B29 Test oscilloscope 2 GHz vertical bandwidth Tektronix TDS794 2- 2 WFM700 Series Waveform Monitors Service Manual...
  • Page 35 Wide Band Engineering input and output ports A57TUC with male 75 test port Calculator Logarithmic function You may need additional cables and adapters, depending on the actual test equipment you use. 2- 3 WFM700 Series Waveform Monitors Service Manual...

  • Page 36: Performance Verification Conditions 2

    (20) minutes in an environment that meets the operating range specifications for temperature and humidity. 2. Connect the WFM700 Waveform Monitor and the test equipment to the same AC power circuit or to a common power strip if you are unsure of the AC power circuit distribution.
  • Page 37 19. CHECK the diagnostics log pages to verify that there are no red FAIL messages. 20. Touch **Erase** NVRAM Log to clear the log file. STOP. Unless the WFM700 has the optional Audio module (Option DG), skip down to step 28 to complete this procedure. 21. Touch Back to Diags Menu.

  • Page 38: Functional Tests 2

    2. Press the INPUT button and touch the Input A soft key. 3. Disable or disconnect the HD video generator signal to INPUT A. 4. CHECK that the red Input Unlocked message is displayed. 2- 6 WFM700 Series Waveform Monitors Service Manual...
  • Page 39 11. Option DG only: Touch the Video Session soft key if necessary to select Video Session. 12. CHECK that the embedded audio status reads as follows: Embedded Audio: PPPP PPPP ---- ---- 2- 7 WFM700 Series Waveform Monitors Service Manual...
  • Page 40 8. Move the VGA monitor cable from the VGA PIX MON output to the EXT VGA output. 9. CHECK that the external VGA display matches the display on the LCD. 10. Disconnect the test setup. 2- 8 WFM700 Series Waveform Monitors Service Manual...

  • Page 41: Performance Tests

    WFM700 Series Technical Reference document. Characteristics with typical specifications (not warranted) are also checked. NOTE. WFM700 firmware version 1.3 or above is required to perform all tests in this section. Verify the firmware version and update if needed. Power Source Range This test checks for stable operation over a varied AC input range.
  • Page 42 5. Press the WFM button. 6. Touch Pr and Pb to turn off the color difference signals. NOTE. The Y component must be on to allow both the Pr and Pb components to be turned off. 2- 10 WFM700 Series Waveform Monitors Service Manual...
  • Page 43 16. CHECK for step direction and height by repeating steps 7 through 10 above. 17. Press the WFM button. 18. Touch Y and Pr to turn these components back on. All components should be on (Y, Pb, and Pr). 2- 11 WFM700 Series Waveform Monitors Service Manual...
  • Page 44 Performance Verification Figure 2- 1: Signal data paths performance verification screen one Cursors adjusted to measure one step Figure 2- 2: Signal data paths performance verification screen two 2- 12 WFM700 Series Waveform Monitors Service Manual...
  • Page 45 29. Press the WFM button. 30. Touch Pr and Pb to turn these components back on. All components should be on (Y, Pb, and Pr). 31. Press the GAIN button. 32. Touch Gain: 1x. 2- 13 WFM700 Series Waveform Monitors Service Manual...
  • Page 46 8. CHECK the total number of pixels counted in steps 5 and 7 is less than six. NOTE. If the bad pixel count exceeds six, perform the procedure again. If a pixel fails for both black and white signals, count it only once. 2- 14 WFM700 Series Waveform Monitors Service Manual...
  • Page 47 13. Set the HD video generator for a 1080i 59.94 100% color bars signal. 14. CHECK that gamut errors read as follows: RGB Gamut Error Status: OK Composite Gamut Error Status: Alarm 2- 15 WFM700 Series Waveform Monitors Service Manual...
  • Page 48 6. Calculate the percent amplitude error with the formula below using the measured value from step 5. Measured mV 800 mV Amplitude Error 7. CHECK that the calculated error is between 5%. 2- 16 WFM700 Series Waveform Monitors Service Manual...

  • Page 49: Figure 2- 3: Serial Video Output Level Performance Verification Screen

    5. Measure the signal amplitude on the test oscilloscope. The following substeps will help obtain a measurable display on the test oscilloscope. Note this measurement. a. Ensure that the termination is correct on the test oscilloscope. Use a converter if necessary. 2- 17 WFM700 Series Waveform Monitors Service Manual...

  • Page 50: Figure 2- 4: Sd Pix Mon Output Level Performance Screen

    6. Calculate the percent amplitude error using the formula: Measured mV 800 mV Percent Amplitude Error 7. CHECK that the calculated error is within 5%. Measure amplitude before triggering transition Figure 2- 4: SD PIX MON output level performance screen 2- 18 WFM700 Series Waveform Monitors Service Manual...
  • Page 51 13. Measure the amplitude of the black level (the level preceding the first color bar step) referenced to ground on the test oscilloscope. Note the measure- ment. See Figure 2- -5. 14. CHECK that the black level is between 25 mV. 2- 19 WFM700 Series Waveform Monitors Service Manual...

  • Page 52: Figure 2- 5: Hd Pix G/Y Video Output Level Performance Screen

    20. Measure the black level (the widest horizontal step) referenced to ground on the test oscilloscope. Change test oscilloscope settings as needed to obtain the best display. See Figure 2- -6. 21. CHECK that the black level is between 25 mV. 2- 20 WFM700 Series Waveform Monitors Service Manual...

  • Page 53: Figure 2- 6: Hd Pix B/Pb And R/Pr Video Output Level Performance Screen

    28. Press the CONFIG button. 29. Touch the Video Inputs/Outputs soft key, then Next Menu. 30. Touch the Output Active for SD soft key, then YPbPr. 31. Press the CONFIG button twice to exit the menu. 2- 21 WFM700 Series Waveform Monitors Service Manual...

  • Page 54: Figure 2- 7: Sd Pix Video Output Level Performance Screen

    Note the measurement. See Figure 2- -7. 37. CHECK that the black level is between 25 mV. First color bar Ground reference Black level Figure 2- 7: SD pix video output level performance screen 2- 22 WFM700 Series Waveform Monitors Service Manual...
  • Page 55 3. Set the analog video generator for a PAL black signal. 4. Connect the output from the HD video generator to INPUT A using a 75 cable. 5. Set the HD video generator for a 1080i 50 100% color bars signal. 2- 23 WFM700 Series Waveform Monitors Service Manual...
  • Page 56 15. Set the HD video generator for a 720p 59.94 100% color bars signal. 16. CHECK that the displayed waveform remains locked to the external reference. 17. Touch the Reference: soft key so that Reference is set to Internal. 18. Disconnect the analog video generator. 2- 24 WFM700 Series Waveform Monitors Service Manual...
  • Page 57 12. Measure the signal amplitude of the reference level before the first packet. Note the Reference measurement. See Figure 2- -8. 13. Measure the amplitude of the smallest packet. Note the Smallest Packet measurement. See Figure 2- -8. 2- 25 WFM700 Series Waveform Monitors Service Manual...

  • Page 58: Figure 2- 8: Hd Gbr Frequency Response Performance Screen

    19. Move the cable from the PIX G/Y to the PIX B/Pb connector. 20. Repeat steps 12 through 18. 21. Move the cable from the PIX B/Pb to the PIX R/Pr connector. 22. Repeat steps 12 through 18. 2- 26 WFM700 Series Waveform Monitors Service Manual...
  • Page 59 34. Measure the signal amplitude of the reference levels before the first packet. Note the Reference measurement. See Figure 2- -9. 35. Measure the amplitude of the smallest packet. Note the Smallest Packet measurement. See Figure 2- -9. 2- 27 WFM700 Series Waveform Monitors Service Manual...

  • Page 60: Figure 2- 9: Sd Gbr Frequency Response Performance Screen

    41. Move the cable from the PIX G/Y to the PIX B/Pb connector. 42. Repeat steps 34 through 40. 43. Move the cable from the PIX B/Pb to the PIX R/Pr connector. 44. Repeat steps 34 through 40. 45. Disconnect the test setup. 2- 28 WFM700 Series Waveform Monitors Service Manual...
  • Page 61 13. Press the STATUS button. 14. Touch the Video Session soft key. 15. CHECK that no Embedded CRC Y or C errors messages occur in an interval of 10 seconds. 16. Disconnect the test setup. 2- 29 WFM700 Series Waveform Monitors Service Manual...

  • Page 62: Figure 2- 10: Eye Vertical Scale Reference Level Screen

    4. Measure the amplitude of the signal on the test oscilloscope. Note this measurement as the Reference Amplitude. See Figure 2- -10 for measurement points. Measure signal, disregard peaks and dips Figure 2- 10: Eye vertical scale reference level screen 2- 30 WFM700 Series Waveform Monitors Service Manual...

  • Page 63: Figure 2- 11: Eye Vertical Scale Performance Screen

    8. Press the CURSOR button and touch the Voltage soft key (Voltage selected). 9. Measure the signal amplitude displayed on the WFM700 using the voltage cursors. Position the cursors where the waveform is unaffected by overshoot or ringing. See Figure 2- -11.
  • Page 64 10. Calculate the return loss with the formula below using the measured values from steps 6 and 9. Reference Input A Return Loss log10 A Reflection 11. CHECK that the calculated return loss is >25 dB for Input A. 2- 32 WFM700 Series Waveform Monitors Service Manual...
  • Page 65 2. Connect the RF generator output to INPUT A using a 75 cable. Imped- ance matching is not important for this test. 3. Set the RF generator as follows: Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation Phase Modulation RF Output 2- 33 WFM700 Series Waveform Monitors Service Manual...
  • Page 66 2. Connect the RF generator output to INPUT A using a 75 cable. Imped- ance matching is not important for this test. 3. Set the RF generator as follows: Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation Phase Modulation RF Output 2- 34 WFM700 Series Waveform Monitors Service Manual...

  • Page 67: Figure 2- 12: Eye Time Base Jitter Performance Screen

    See Figure 2- -12. 13. CHECK that the measured value is approximately 0.15 ns (typical). Measure width of crossing Figure 2- 12: Eye time base jitter performance screen 2- 35 WFM700 Series Waveform Monitors Service Manual...
  • Page 68 5. Touch the Clock BW: soft key. On the resulting screen, touch the 10 Hz soft key and then the Done soft key. 6. Touch the 3 Eye soft key (3 Eye selected). 2- 36 WFM700 Series Waveform Monitors Service Manual...

  • Page 69: Figure 2- 13: Eye Clock Recovery Bandwidth Performance Screen

    1 UI phase modulation. Under one UI phase modulation achieved One UI phase modulation achieved Over one UI phase modulation achieved Figure 2- 13: Eye clock recovery bandwidth performance screen 2- 37 WFM700 Series Waveform Monitors Service Manual...
  • Page 70 18. Calculate percent amplitude error using the formula: 1.57 --- Phase Deviation Amplitude Error 1.57 19. CHECK that the calculated amplitude error is between –10% and +20%. 20. Press the WFM button to exit eye clock BW mode. 2- 38 WFM700 Series Waveform Monitors Service Manual...
  • Page 71 7. Read the Measured Jitter amplitude (in UI) displayed on screen. 8. Calculate the jitter response in db using the formula: Measured Jitter Jitter Response log10 4 UI 9. CHECK that the calculated response is between –2 dB and –4 dB. 2- 39 WFM700 Series Waveform Monitors Service Manual...
  • Page 72 17. Set Hi Pass Filter to 1 kHz. 18. Adjust the RF generator deviation for a Jitter reading of 4.0 UI. 19. Set Hi Pass Filter to 100 kHz. 20. Repeat steps 7 through 9. 2- 40 WFM700 Series Waveform Monitors Service Manual...
  • Page 73 4. Touch the Eye soft key and then touch the Done soft key. NOTE. If an adapter is needed to obtain the correct cable connectors, they should be installed at the generator, not on the WFM700. 5. Set the RF generator as follows: Frequency 741.7582 MHz...

  • Page 74: Figure 2- 14: Eye Clock Recovery Bandwidth Performance Screen

    12. Adjust the RF generator LF2 frequency in 1 Hz steps until the displayed waveform shows exactly 1 UI phase modulation. Note the LF2 frequency setting. See Figure 2- -13 on page 2- -37. 2- 42 WFM700 Series Waveform Monitors Service Manual...
  • Page 75 23. Calculate percent frequency error using the formula: 1000 Frequency Error LF2 frequency 24. CHECK that the calculated frequency error is between –10% and +10%. 25. Press the WFM button to exit Eye mode. 2- 43 WFM700 Series Waveform Monitors Service Manual...
  • Page 76 8. Touch the Hi Pass Filter: soft key and set to 10 Hz. 9. Set the oscilloscope controls to produce a stable display. Limit the band- width setting to reduce displayed noise for better results. See Figure 2- -15. 2- 44 WFM700 Series Waveform Monitors Service Manual...

  • Page 77: Figure 2- 15: Jitter Gain Check Performance Screen

    Jitter Out Scale Factor Error 12. CHECK that the calculated error is 10% (typical). 13. Read the Measured Jitter amplitude in UI on the WFM700 display. 14. Calculate the HD jitter gain error in percentage using the formula: HD Jitter Gain Error...
  • Page 78 3. Touch the Eye Sig BW Test soft key and then the Start Eye Sig BW Test soft key. This puts the WFM700 in Eye Bandwidth mode and starts the test. 4. Touch the Input# softkey, select Input A, then touch Done.

  • Page 79: Figure 2- 16: Eye Pattern Display Signal Bandwidth Performance Screen

    11. Set the RF generator frequency to 2.5 GHz. 12. Measure the waveform amplitude using the cursors and note the delta measurement. Measure pk-pk between the bright central areas Figure 2- 16: Eye pattern display signal bandwidth performance screen 2- 47 WFM700 Series Waveform Monitors Service Manual...
  • Page 80 25. Touch Exit to exit Eye Bandwidth mode. NOTE. Most front panel buttons are disabled while in the Eye Sig BW Test mode. You must use the Exit soft key to return instrument functions. 26. Disconnect the test setup. 2- 48 WFM700 Series Waveform Monitors Service Manual...
  • Page 81 Performance Verification Restore to Factory Follow these steps to restore the WFM700 to the factory settings when finished Settings with the Performance Verification procedures. 1. Press the CONFIG button. 2. Touch the Audio Inputs/Outputs soft key and then Next Menu.

  • Page 82: Wfm700 Audio (Option Dg) Performance Verification Procedure 2

    Performance Verification WFM700 Audio (Option DG) Performance Verification Procedure The following tests verify that the Audio module (Option DG) for the WFM700 waveform monitor (all models) meets the warranted characteristics listed in the Specifications section of the WFM700 Series Technical Reference document.
  • Page 83 AES 1- -2 I/O using a 75 cable. 2. Set the digital audio generator as follows: Frequency 1 kHz Output Level - -20 dB FS Audio Tone Sample Frequency 96 kHz Unbalanced V 2.000 V (Carrier Level) 2- 51 WFM700 Series Waveform Monitors Service Manual...
  • Page 84 17. CHECK for an indication of –20 dB FS and no error messages in the corresponding bars. 18. Move the audio generator output to each of the remaining AES I/O connectors and repeat step 17 for each AES I/O connector. 19. Disconnect the test setup. 2- 52 WFM700 Series Waveform Monitors Service Manual...
  • Page 85 30 ns and 44 ns. 15. Move the cable to each of the remaining AES I/O connectors and repeat steps 9 through 14 for each AES I/O connector. 16. Disconnect the test setup. 2- 53 WFM700 Series Waveform Monitors Service Manual...
  • Page 86 6. Allow the jitter reading to settle for a few second. 7. CHECK for a typical Jitter Peak abs reading of less than 3.5 ns over an interval of at least 5 seconds. 2- 54 WFM700 Series Waveform Monitors Service Manual...
  • Page 87 8. Move the cable to each of the remaining AES I/O connectors and repeat step 7 for each AES I/O connector. 9. Disconnect the test setup. Restore to Factory Follow these steps to restore the WFM700 to the factory settings when finished Settings with the Performance Verification procedures. 1. Press the CONFIG button.
  • Page 88 Performance Verification 2- 56 WFM700 Series Waveform Monitors Service Manual...

  • Page 89: Wfm700/Wfm7M Input Module Test Record 2

    Pb component ramps step size 0.7 mV 0.9 mV Pr component ramp is monotonic Pass Pr component ramps step size 0.7 mV 0.9 mV SD LCD Pixel Defects (WFM7A and WFM7M only) Number of bad pixels 2- 57 WFM700 Series Waveform Monitors Service Manual...
  • Page 90 1080i 59.94 100% color bars Gamut errors read as follows: Pass RGB Gamut Error Composite Gamut Error Alarm Serial Video Output Calculated error - - 5% SD PIX MON Output Level Calculated error - - 5% 2- 58 WFM700 Series Waveform Monitors Service Manual...
  • Page 91 Display remains locked to the external reference Pass Cable Loss Accommodation HIgh Definition No embedded CRC Y or C errors messages Pass Standard Definition No embedded CRC Y or C errors messages Pass 2- 59 WFM700 Series Waveform Monitors Service Manual...
  • Page 92 –4 dB –2 dB Eye Clock Recovery Bandwidth Calculated frequency error Clock BW at 100 Hz –10% +10% Clock BW at 10 Hz –10% +10% Clock BW at 1 kHz –10% +10% 2- 60 WFM700 Series Waveform Monitors Service Manual...
  • Page 93 - - 3 dB 0 dB 50 kHz - - 3 dB 0 dB Input B 2.5 GHz to 500 MHz - - 3 dB 0 dB 50 kHz - - 3 dB 0 dB 2- 61 WFM700 Series Waveform Monitors Service Manual...
  • Page 94 WFM700/WFM7M Input Module Test Record 2- 62 WFM700 Series Waveform Monitors Service Manual...

  • Page 95: Wfm700/Wfm7A Input Module Test Record 2

    Pb component ramps step size 0.7 mV 0.9 mV Pr component ramp is monotonic Pass Pr component ramps step size 0.7 mV 0.9 mV SD LCD Pixel Defects Number of bad pixels 2- 63 WFM700 Series Waveform Monitors Service Manual...
  • Page 96 1080i 59.94 100% color bars Gamut errors read as follows: Pass RGB Gamut Error Composite Gamut Error Alarm Serial Video Output Calculated error - - 5% SD PIX MON Output Level Calculated error - - 5% 2- 64 WFM700 Series Waveform Monitors Service Manual...
  • Page 97 Display remains locked to the external reference Pass Cable Loss Accommodation HIgh Definition No embedded CRC Y or C errors messages Pass Standard Definition No embedded CRC Y or C errors messages Pass 2- 65 WFM700 Series Waveform Monitors Service Manual...
  • Page 98 Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician: Performance Test Minimum Incoming Outgoing Maximum Input Return Loss Input A Calculated return loss >25 dB Input B Calculated return loss >25 dB 2- 66 WFM700 Series Waveform Monitors Service Manual...

  • Page 99: Wfm700/Wfm7Hd Input Module Test Record 2

    Pb component ramps step size 0.7 mV 0.9 mV Pr component ramp is monotonic Pass Pr component ramps step size 0.7 mV 0.9 mV HD LCD Pixel Defects Number of bad pixels 2- 67 WFM700 Series Waveform Monitors Service Manual...
  • Page 100 PIX B/Pb calculated amplitude error - - 5% PIX B/Pb black level - - 25 mV +25 mV PIX R/Pr calculated amplitude error - - 5% PIX R/Pr black level - - 25 mV +25 mV 2- 68 WFM700 Series Waveform Monitors Service Manual...
  • Page 101 No embedded CRC Y or C errors messages Pass Standard Definition No embedded CRC Y or C errors messages Pass Input Return Loss Input A Calculated return loss >25 dB Input B Calculated return loss >25 dB 2- 69 WFM700 Series Waveform Monitors Service Manual...
  • Page 102 WFM700/WFM7HD Input Module Test Record 2- 70 WFM700 Series Waveform Monitors Service Manual...

  • Page 103: Wfm700 Audio Module (Option Dg) Test Record 2

    WFM700 Audio Module (Option DG) Test Record Photocopy this form and use it to record the performance test results for the Audio module (Option DG). Audio (Option DG) Test Record Instrument Serial Number: Certificate Number: Audio Module Serial Number: Temperature:...
  • Page 104 WFM700/WFM7DG Audio Module (Option DG) Test Record Audio (Option DG) Test Record (cont.) Instrument Serial Number: Certificate Number: Audio Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician: Performance Test Minimum Incoming Outgoing Maximum Sample Frequency at 96 kHz Unbalanced Output (Carrier Level) at 2.000 V...
  • Page 105 WFM700/WFM7DG Audio Module (Option DG) Test Record Audio (Option DG) Test Record (cont.) Instrument Serial Number: Certificate Number: Audio Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician: Performance Test Minimum Incoming Outgoing Maximum Sample Frequency at 35 kHz Unbalanced Output (Carrier Level) at 2.000 V...
  • Page 106 WFM700/WFM7DG Audio Module (Option DG) Test Record Audio (Option DG) Test Record (cont.) Instrument Serial Number: Certificate Number: Audio Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician: Performance Test Minimum Incoming Outgoing Maximum Output Amplitude, Rise Time and Fall Time...

  • Page 107: Adjustments 3

    Adjustment Procedures...
  • Page 109 WFM700. Two Video Modules — The adjustment procedures must be performed on both video modules if two are installed in the WFM700. Complete the entire performance procedures on one video module at a time. Access to Adjustments — The cabinet and cover must be removed to access the manual adjustments in this procedure.

  • Page 110: Table 3- 1: Test Equipment For Adjustment Procedures

    Warm-up Period — Turn on the WFM700 and allow a 20-minute warm-up period in a 20 C to 30 C environment before adjusting it. Adjustments done before the operating temperature has stabilized may cause errors in performance.

  • Page 111: Figure 3- 1: Adjustment Locations On The Video Module

    Adjustments Manual Adjustment Procedures This section describes how to do the manual adjustments of the WFM700 Waveform Monitors. Performing these procedures require the removal of the cabinet. Read the section Before Performing Adjustment Procedures on page 3- -1. It’s recommended that this procedure be performed in its entirety and in the order presented.
  • Page 112 2. Set the HD video generator for a 1080i 59.94 100% color bar signal. 3. Select the appropriate WFM700 Video Module (1 or 2) and input (A or B). 4. Press the WFM button. 5. Connect the SERIAL OUT to the 75 input of the test oscilloscope using a cable.

  • Page 113: Figure 3- 2: Serial Out Amplitude Adjustment Screen

    2. Set the SD video generator for a 525-format 100% color bar signal. 3. Select the appropriate WFM700 Video Module (1 or 2) and input (A or B). 4. Press the WFM button. 5. Connect the SD PIX MON output to the 75...

  • Page 114: Figure 3- 3: Sd Pix Monitor Adjustment Screen

    5 ns to 10 ns before the triggering transition. Measure amplitude before triggering transition Figure 3- 3: SD PIX monitor adjustment screen 3- 6 WFM700 Series Waveform Monitors Service Manual...
  • Page 115 4. Select the appropriate WFM700 Video Module (1 or 2) and input (A or B). 5. Press the CONFIG button. 6. Touch the Video Inputs/Outputs soft key, then Next Menu.

  • Page 116: Figure 3- 4: Sd Pix G/Y Output Adjustment Screen

    First color bar Ground reference Black level Figure 3- 4: SD PIX G/Y output adjustment screen Pk - Pk level Black level Figure 3- 5: SD PIX B/Pb and R/Pr output adjustment screen 3- 8 WFM700 Series Waveform Monitors Service Manual...
  • Page 117 1. Connect the HD video generator to the Video Module under test using a cable. 2. Select the appropriate WFM700 Video Module (1 or 2) and input (A or B). 3. Connect the PIX G/Y output to the 75 input of the test oscilloscope using a 75 cable.

  • Page 118: Figure 3- 6: Hd Pix G/Y Output Adjustment Screen

    First color bar Black level Ground reference Figure 3- 6: HD PIX G/Y output adjustment screen Pk - Pk level Black level Figure 3- 7: HD PIX B/Pb and PIX R/Pr output adjustment screen 3- 10 WFM700 Series Waveform Monitors Service Manual...

  • Page 119: Figure 3- 8: Calibration Routines Menu

    Adjustments Instrument Driven Procedures The following procedures use the WFM700 internal calibration routines to load calibration constants into non-volatile memory. The routines automatically make the necessary instrument settings. The user must step through the procedure and provide the signal sources to complete the routine. See Figure 3- -8 for the menu structure of the calibration routines.
  • Page 120 Touchpanel Cal This procedure adjusts the touch panel to match the screen display. This procedure is valid for all WFM700 models (all video module types). 1. Press the CONFIG button, then touch the Calibration soft key and then the Next Menu soft key.

  • Page 121: Figure 3- 9: Eye Vertical Scale Reference Amplitude Screen

    Adjustment soft key. 14. Press the CURSOR button to turn the cursors back on. 15. Use the General Purpose Knob to adjust the eye diagram amplitude to the cursors. See Figure 3- -10. 3- 13 WFM700 Series Waveform Monitors Service Manual...

  • Page 122: Figure 3- 10: Eye Vertical Scale Adjustment Screen

    Figure 3- 10: Eye vertical scale adjustment screen 16. Touch the Save and Exit soft key to save the new calibration constant. 17. Touch the CONFIG button twice to exit the configuration menu. 3- 14 WFM700 Series Waveform Monitors Service Manual...
  • Page 123 SD Jitter Gain Adjust This procedure adjusts the scale factor for the SD jitter display and the measured jitter readout. This adjustment is only available for the WFM700M (WFM700 with a WFM7M video module). Following is a list of the signal requirements to perform the adjustment.

  • Page 124: Figure 3- 11: Sd Jitter Gain Adjustment Screen

    6. Adjust the signal amplitude using the General Purpose Knob to 2 UI as measured on the display. See Figure 3- -11. 7. Touch the Save and Exit soft key to save the new calibration constant. Figure 3- 11: SD Jitter gain adjustment screen 3- 16 WFM700 Series Waveform Monitors Service Manual...
  • Page 125 HD Jitter Gain Adjust This procedure adjusts the scale factor for the HD jitter display and the measured jitter readout. This adjustment is only available for the WFM700M (WFM700 with a WFM7M video module). Following is a list of the signal requirements to perform the adjustment.

  • Page 126: Figure 3- 12: Hd Jitter Gain Adjustment Screen

    Figure 3- 12: HD Jitter gain adjustment screen Under one UI phase modulation achieved One UI phase modulation achieved Over one UI phase modulation achieved Figure 3- 13: Eye loop BW one UI adjustment screen 3- 18 WFM700 Series Waveform Monitors Service Manual...
  • Page 127 5. Adjust the displayed modulation using the General Purpose Knob for exactly 1 UI as measured on the display. See Figure 3- -13. 6. Touch the Save and Exit soft key to save the new calibration constant. 3- 19 WFM700 Series Waveform Monitors Service Manual...
  • Page 128 5. Adjust the displayed modulation using the General Purpose Knob for exactly 1 UI as measured on the display. See Figure 3- -13 on page 3- -18. 6. Touch the Save and Exit soft key to save the new calibration constant. 3- 20 WFM700 Series Waveform Monitors Service Manual...
  • Page 129 5. Adjust the displayed modulation using the General Purpose Knob for exactly 1 UI as measured on the display. See Figure 3- -13 on page 3- -18. 6. Touch the Save and Exit soft key to save the new calibration constant. 3- 21 WFM700 Series Waveform Monitors Service Manual...
  • Page 130 Adjustments Jitter HPF Adjust Performing this procedure loads new calibration constants into the instrument. This calibration routine is only available for the WFM700M (WFM700 with a WFM7M module). The following test items are required to perform the entire adjustment. Adjustment requirements...
  • Page 131 Adjustments Figure 3- 14: Jitter HPF adjustment screen 3- 23 WFM700 Series Waveform Monitors Service Manual...
  • Page 132 Adjustments 3- 24 WFM700 Series Waveform Monitors Service Manual...
  • Page 133 Maintenance...

  • Page 135: General Maintenance 4

    Firmware Upgrades Firmware upgrades for the waveform monitor become available periodically and can be downloaded from the Tektronix, Inc. Web site (www.tektronix.com). Instructions for obtaining and installing updated firmware is located in the WFM700 Series Technical Reference document. 4- 1...

  • Page 136: Preventing Esd 4

    5. Handle circuit boards by the edges when possible. 6. Do not slide the circuit boards over any surface. 7. Avoid handling circuit boards in areas that have a floor or work-surface covering capable of generating a static charge. 4- 2 WFM700 Series Waveform Monitors Service Manual...

  • Page 137: Inspection And Cleaning 4

    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. 4- 3 WFM700 Series Waveform Monitors Service Manual...

  • Page 138: Table 4- 1: External Inspection Check List

    Avoid using excess force or you may damage the plastic display surface. CAUTION. To prevent getting moisture inside the instrument during external cleaning, use only enough liquid to dampen the cloth or applicator. 4- 4 WFM700 Series Waveform Monitors Service Manual...

  • Page 139: Table 4- 2: Internal Inspection Check List

    Loose plugs or connectors. 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- 5 WFM700 Series Waveform Monitors Service Manual...
  • Page 140 8. Dry all components and assemblies in an oven or drying compartment using low-temperature (125 F to 150 F) circulating air. This section contains the information needed to repackage the portable main- frame for shipment or storage. 4- 6 WFM700 Series Waveform Monitors Service Manual...

  • Page 141: Table 4- -3: Tools Required For Module Removal

    Preventing ESD on page 4- - 2. WARNING. Disconnect the power source from the WFM700 before beginning this or any procedure requiring you to remove the cover from the instrument chassis.

  • Page 142: Cabinet 4

    Removal and Installation Procedures Cabinet The WFM700 series uses various cabinets (sleeves) that slide over the WFM700 chassis for portable and rackmount applications. Each type of cabinet is removed and installed in the same manner. Removal Read the entire removal procedure before proceeding.

  • Page 143: Chassis Cover 4

    4. Hold the cover on the chassis tightly, applying pressure to compress the foam underneath. Tighten the screws along the right and left sides of the chassis. (If it is easier for you, turn the instrument chassis on its side while tightening these screws.) 4- - 9 WFM700 Series Waveform Monitors Service Manual...
  • Page 144 (T--10) Loosen these screws (T--15) Loosen these screws (T--10) Loosen these Remove these screws (T--10) screws (T--15) Figure 4- - 2: WFM700 chassis cover, showing screws to loosen and remove 4- - 10 WFM700 Series Waveform Monitors Service Manual...

  • Page 145: Plug-In Modules 4

    CPU and Real Time Display boards will function in the instrument: Version A: CPU 671-4528-xx & Real Time Display 671-4529-xx Version B: CPU 671-5751-xx & Real Time Display 671-5661-xx Module retaining screws Figure 4- - 3: Plug-in module retaining screws 4- - 11 WFM700 Series Waveform Monitors Service Manual...
  • Page 146 CAUTION. When removing a module, be careful to avoid damaging the EMI flaps on the rear panels. Grounding clip between modules Figure 4- - 4: Grounding clip between two video modules 4- - 12 WFM700 Series Waveform Monitors Service Manual...
  • Page 147 Ejector lever Input module Module grounding clip Plastic guide Plastic guide Fan housing Remove this screw (T--15) Figure 4- - 5: Removing a plug-in module 4- - 13 WFM700 Series Waveform Monitors Service Manual...
  • Page 148 EMI flaps on the rear panels. Be sure that the white ejector lever is level with the module, so that it won’t get jammed in the fan housing as you install the module. 4- - 14 WFM700 Series Waveform Monitors Service Manual...

  • Page 149: Power Supply 4

    Slot 2 Slot 1 Figure 4- - 6: WFM700 rear panel showing slot numbers 3. Prepare to insert the plug-in module by lining it up with the plastic guide toward the front of the instrument and by placing the white ejector lever in the down position, level with the module.
  • Page 150 Removal and Installation Procedures Ejector lever Video module Module grounding clip Plastic guide Plastic guide Fan housing Reinstall this screw (T--15) Figure 4- - 7: Inserting a module into the chassis 4- - 16 WFM700 Series Waveform Monitors Service Manual...
  • Page 151 Removal and Installation Procedures Grounding clip makes contact on screw heads Place ground clip between modules Figure 4- - 8: Installing the grounding clip between two video modules 4- - 17 WFM700 Series Waveform Monitors Service Manual...

  • Page 152: Power Supply

    J170 J270 J271 3. Remove the four screws (T-10) from the side of the chassis. Reinstallation Reinstall the power supply module in the reverse order of the removal procedure. 4- - 18 WFM700 Series Waveform Monitors Service Manual...

  • Page 153: Front End Assembly 4

    (or other non-metallic flat-bladed tool) under the knob and prying it off its shaft. b. Lay the Front End Assembly face down on a flat surface. 4- - 19 WFM700 Series Waveform Monitors Service Manual...
  • Page 154 To remove the circuit board and keypad for the left-hand side controls (ON/STBY button side), first lift the edge near the LCD opening up and then remove the circuit board. See Figure 4- -10. 4- - 20 WFM700 Series Waveform Monitors Service Manual...
  • Page 155 Front Bezel, then press near each notch until you hear them “snap” into place. Right keyboard board Flex circuit holder assembly Front bezel Left keypad Right keypad Figure 4- - 10: Keyboard access 4- - 21 WFM700 Series Waveform Monitors Service Manual...

  • Page 156: Fan Assembly 4

    1. Install the four screws (T-15) securing the fan to the fan chassis. The airflow arrow must point toward the rear of the instrument. 2. Plug the keyed fan connector/s to the Main board. 4- - 22 WFM700 Series Waveform Monitors Service Manual...
  • Page 157 See Figure 4- -11. 2. Tilt and lower the fan assembly into the instrument chassis, lining up the notches in the fan assembly to the tabs in the chassis. 4- - 23 WFM700 Series Waveform Monitors Service Manual...

  • Page 158: Main Circuit Board 4

    4. Install the two screws (T-15) on the top to secure the fan assembly to the chassis. 5. Plug the keyed fan connector/s into the Main circuit board. J580 J590 4- - 24 WFM700 Series Waveform Monitors Service Manual...
  • Page 159 See Figure 4- -12. Reinstallation Reinstall the Main circuit board in the reverse order of the removal procedure. T-15 Screw (11) Main circuit board Figure 4- - 12: Main circuit board securing screws 4- - 25 WFM700 Series Waveform Monitors Service Manual...
  • Page 160 Removal and Installation Procedures 4- - 26 WFM700 Series Waveform Monitors Service Manual...

  • Page 161: Table 4- 4: Failure Symptoms And Possible Causes

    Refer to the LED fault codes in Table 4- - 5 on page 4- - 32. FAULT LED glows FAULT LED flashes ON/STBY LED flashes Front panel LEDs do not light LCD panel display blank Use the Blank Screen Troubleshooting Tree on page 4- - 37. 4- 27 WFM700 Series Waveform Monitors Service Manual...
  • Page 162 Reference module between the two circuit boards at J1 connector and J270. INPUT A or INPUT B work but not Faulty Input Module. both HD or SD waveform work but not Faulty Input Module. both 4- 28 WFM700 Series Waveform Monitors Service Manual...
  • Page 163 Video module. AES output bit errors, excessive jitter Embedded source selection Embedded audio presence readout 4- 29 WFM700 Series Waveform Monitors Service Manual...
  • Page 164 NOTE. Running the Audio Path Diagnostics sets the instrument into a special diagnostics configuration mode. After running this diagnostic, you must reboot the instrument to return to normal operation. 4- 30 WFM700 Series Waveform Monitors Service Manual...
  • Page 165 Refer to the User manual for information about configuring the instrument for printing. You can also download the Diagnostic Log using the Remote Web Interface. Refer to the User manual for more information. 4- 31 WFM700 Series Waveform Monitors Service Manual...

  • Page 166: Table 4- 5: Led Fault Codes

    Press the ON/STBY switch to reset the instrument. If the fault code reoccurs, go to the LED Fault Troubleshooting Tree (1 and 2) on pages 4- - 35 and 4- - 36 or the Power Troubleshooting Tree on page 4- - 34. 4- 32 WFM700 Series Waveform Monitors Service Manual...
  • Page 167 The troubleshooting trees may require some test equipment, depending on the Troubleshooting Trees instrument fault. You will need an oscilloscope to check waveforms for video display problems. A digital voltmeter is needed to check voltages and continuity between cables. 4- 33 WFM700 Series Waveform Monitors Service Manual...

  • Page 168: Troubleshooting

    J390, and pin 5 of the flex cable on J680. Interface board. Check that U790 is seated in its socket. If DS390 is still not on, replace Main Interface Board. Figure 4- 13: Primary troubleshooting procedure 4- 34 WFM700 Series Waveform Monitors Service Manual...
  • Page 169 Is the voltage Replace faulty fan. If problems persist, refer correct? to Check for Problems on page 4- - 27. Replace Main Interface board. Figure 4- 14: LED fault troubleshooting tree 1 4- 35 WFM700 Series Waveform Monitors Service Manual...
  • Page 170 +12 V and - - 12 V LEDs objects causing a short circuit. Supply module. (DS471, DS472) light during power up? Replace Main Interface board if no visible problems are found. Figure 4- 15: LED fault troubleshooting tree 2 4- 36 WFM700 Series Waveform Monitors Service Manual...
  • Page 171 If problems persist, refer Replace Main Replace Front the signals to Check for Problems Panel assembly. present at Interface board. on page 4- - 27. J890? Figure 4- 16: Blank screen troubleshooting tree 4- 37 WFM700 Series Waveform Monitors Service Manual...

  • Page 172: Touch Panel

    Front Panel assembly. damaged. If the problem persists, replace the Front Panel assembly. Figure 4- 17: Front panel buttons and touch panel troubleshooting tree 4- 38 WFM700 Series Waveform Monitors Service Manual...
  • Page 173 PCI tests, VGA tests If problems persist, refer to Check for Problems Replace the Main on page 4- - 27. Interface board. Figure 4- 18: Diagnostics errors troubleshooting tree 4- 39 WFM700 Series Waveform Monitors Service Manual...
  • Page 174 Input Module and the Audio Module. Check for bent pins on the Main board. Straighten pins or replace pins OK? Main board. Replace the faulty Input module. Figure 4- 19: Audio (Option DG) diagnostics errors troubleshooting tree 4- 40 WFM700 Series Waveform Monitors Service Manual...

  • Page 175: Repackaging Instructions 4

    When repacking the instrument for shipment, use the original packaging. If the packaging is unavailable or unfit for use, contact your local Tektronix representa- tive to obtain new packaging. Refer to Contacting Tektronix on page xiv for the address, the email address, and phone number.
  • Page 176 Repackaging Instructions 4- 42 WFM700 Series Waveform Monitors Service Manual...

  • Page 177: Replaceable Parts 5

    Replaceable Parts...

  • Page 179: Parts Ordering Information 5

    Replaceable Parts This section contains a list of the replaceable electrical modules and mechanical parts for the WFM700 Waveform Monitor. 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 180: Module Servicing 5

    Replaceable Parts Module Servicing Modules can be serviced through 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 remanufactured module.
  • Page 181 1400 NW COMPTON DR BEAVERTON, OR 97006- - 1992 TK2565 VISION PLASTICS INC. 26000 SW PARKWAY CENTER DRIVE WILSONVILLE, OR 97070 TK6085 OXFORD WIRE & CABLE SERVICE INC. 10 INDUSTRIAL DR OXFORD, MS 38655 5- 3 WFM700 Series Waveform Monitors Service Manual...
  • Page 182 CONN,RF JACK; BNC,75 OHM,FEMALE,RTANG: 4Y264 BCJ- - FPLV01 USED ON 292 ASSEMBLY (WFM700A, WFM700HD) 131- - 6684- - 00 CONN,RF JACK; BNC,75 OHM,FEMALE,RTANG: 4Y264 BCJ- - FPLV01 USED ON 292 ASSEMBLY (WFM700M)) 5- 4 WFM700 Series Waveform Monitors Service Manual...
  • Page 183 PANEL, REAR: POWER SUPPLY, 0.062 AL TK2359 333- - 4338- - 01 - - 20 211- - 0725- - 00 SCREW,MACHINE: 6- - 32 X 0.375,FLH TORX 0KB01 211- - 0725- - 00 5- 5 WFM700 Series Waveform Monitors Service Manual...
  • Page 184 671- - 5336- - 00 389- - 3205- - XX WIRED 671- - 5336- - 01 B022220 CKT BD ASSY: EXTERNAL REFERENCE, TESTED, 80009 671- - 5336- - 01 389- - 3205- - XX WIRED 5- 6 WFM700 Series Waveform Monitors Service Manual...
  • Page 185 672- - 1677- - 55 SD & HD SW (WFM700M) 672- - 1677- - 56 B022604 CKT BD ASSY: 292 W/EYE MEZZANINE, 80009 672- - 1677- - 56 SD & HD SW (WFM700M) 5- 7 WFM700 Series Waveform Monitors Service Manual...
  • Page 186 Replaceable Parts Figure 5- 1: WFM700 replaceable circuit boards and cables 5- 8 WFM700 Series Waveform Monitors Service Manual...
  • Page 187 174- - 4626- - 00 B010100 B010999 CABLE ASSY,SP; DISCRETE,CPM,3,14 AWG,5.0 L, 060D9 174- - 4626- - 00 FEMALE,STR,1X3,0.156 CTR X STRIPPED ENDS,0.200,HIGH VOLTAGE INCLUDED IN THE 650- - 4315- - 50 5- 9 WFM700 Series Waveform Monitors Service Manual...
  • Page 188 Replaceable Parts Figure 5- 2: WFM700 power supply assembly and rear panel (B010999 and below) 5- 10 WFM700 Series Waveform Monitors Service Manual...
  • Page 189 T- - 15 TORX DR - - 21 211- - 0734- - 00 SCREW, MACHINE: 6- - 32 X 0.25O, FLH100, STL, 0KB01 211- - 0734- - 00 CDPL, T- - 10 TORX DR 5- 11 WFM700 Series Waveform Monitors Service Manual...
  • Page 190 - - P00 W/CONTS &HO WITH CONN, UL, CS - - 24 211- - 1050- - 00 SCREW, MACHINE: 6- - 32 X 0.312 L, PNH, STL CAD 0KB01 ORDER BY DESCR PLT, T15 5- 12 WFM700 Series Waveform Monitors Service Manual...
  • Page 191 Replaceable Parts Figure 5- 3: WFM700 replaceable chassis parts 5- 13 WFM700 Series Waveform Monitors Service Manual...
  • Page 192 210- - 1039- - 00 WASHER,LOCK; 0.521 ID,INT,0.025 THK,SST 78189 1224- - 02 - - 5 220- - 0497- - 00 NUT,PLAIN,HEX; 0.5- - 28 X 0.562 HEX,BRS CD PL 0KB01 220- - 0497- - 00 5- 14 WFM700 Series Waveform Monitors Service Manual...
  • Page 193 Replaceable Parts Figure 5- 4: WFM700 Audio board option DG 5- 15 WFM700 Series Waveform Monitors Service Manual...
  • Page 194 Replaceable Parts 5- 16 WFM700 Series Waveform Monitors Service Manual...

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