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WFM7200 Waveform Monitor Service Manual

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1. Option CPS Option EYE PHY Composite I O SDI I O Board Sy See ee eae tS SDIA SDI A OUT CPSA CPSB i NEN Cable SDIB Meter l u EQ y A i Clock Recovery R Fil ADC REF CPS ADC ADC Reclocker A Reclocker a ae u P 21 Fl kasi aii AUDIO HEADPHONE OUT Parallel o Serial SDI OUT Conversion ANALOG DAC P X OUT Picture Processing Recursion Measurement and Raster XGA DISPLAY gt Processing DSP FPGAs ma DAC OUT i Display Combining DSY FPGA CPU Graphics External Ref Syne Capture Fast Static j Black or Tri Level Stripper SDRAM emo LCD Backligh DISPLAY Power SDRAM Supply Front Panel CPU Core Supply Buttons amp Knobs and Peripherals all Board 0393 001 Figure 2 Option PHY3 block diagram WFM7200 Waveform Monitor Service Manual 9 Theory of Operation Fan Control
2. L HIEMS p007 gn 0512 0511 o Bee stem rat ps 0393 003 Figure 3 Main board power supply test points and LEDs WFM7200 Waveform Monitor Service Manual 35 General Maintenance 36 J641 um n 904 isos gt SESS TESS SSS O 05511 Secondary Power Supply Test Points Figure 4 Audio Main board power supply test point locations WFM7200 Waveform Monitor Service Manual Gs Ea ei ii 5 HBH HE a E E Es EEE E wo us op EE H e i l 1890 un paige tas sH cH a s H L fi BH H In tom Dr am um Hs mm zm rm J390 Figure 5 Analog audio board power supply test point locations WFM7200 Waveform Monitor Service Manual General Maintenance Secondary Power Supply Test Points 3
3. 41 Figure 7 Front panel and fan cable connections sess eene 44 Figure 8 Front panel 15 212 24 44 Figure 9 Front panel board 1 45 Figure 10 Circuit boards and 53 Figure 11 Chassis 2 e hene se he e e heres 55 Figure 12 Main board replaceable 2 57 Figure 13 Analog audio breakout cable assembly 2 2 17 7 7 7 7 1 42 58 WFM7200 Waveform Monitor Service Manual Table of Contents List of Tables Table i Related m vii Table 1 External inspection 8 2 e mee emen 19 Table 2 Internal inspection 1186 22 0 nee eaes 19 Table 3 Required test 2 22 Table 4 Symptoms and causes 2 2 0 eene 23 Table 5 Main board secondary supplies sss eee 28 Table 6 Audio main board secondary supplies sss eee 29 Table 7 Analog audio secondary 2 22 0 29 Table 8 Tools required for module removal 2 2 2 mee emen 39 Tabl
4. Bg 56 8 2 00000 5990 D REMOTE 0393 007 Audio SDI EYE PHY Composite Figure 6 Module securing screws Composite Board Option Composite board if installed is located in the right module bay See CPS Figure 6 on page 41 1 Remove the four 15 screws securing the Composite module to the rear panel 2 Liftthe Composite module out of the instrument rocking it gently until the connector separates from J20 on the Main board It may help to loosen the adjacent rear panel screws SDI or PHY board SDI board or PHY board if Option PHY3 is installed is located in the right center module bay See Figure 6 on page 41 1 Remove the three T 15 screws securing the module to the rear panel 2 Lift the module out of the instrument rocking it gently until the connector separates from J16 on the Main board It may help to loosen the adjacent rear panel screws WFM7200 Waveform Monitor Service Manual 4 Removal and Replacement Procedures Audio Boards Options AD and DPE Power Supply 42 The Audio option boards if installed are located in the left center module bay near the power supply See Figure 6 on page 41 DPE board The circuit board for Option DPE may be removed without removing the entire Audio module 1 Unsnap the spring clips at each end of the DPE circui
5. Serial Digital Input The serial digital circuitry receives the SDI input streams after they have been Processing equalized from either the SDI I O board or the PHY3 board depending on the installed options The SDI streams are passed to the DSP FPGAs where they undergo measurement and raster processing The signal information is then passed to the DSY FPGA for picture processing recursion and display combining The result is shown on the LCD display and also provided to the external DVI I connector Reference Input The Reference input is a passive loopthrough which is AC coupled and buffered Operation varies depending on whether the instrument is operating in digital or composite input mode For digital inputs the reference signal 1s applied to a sync separator whose output is supplied to the DSP FPGA where the timing information is derived For composite inputs the reference signal 15 routed to the Option CPS composite input board where a 10 bit ADC digitizes the signal The digitized signal is then routed back to the DSP FPGA on the main board so the timing information can be derived as with the digital process Digital Waveform The data streams from the Composite and SDI video inputs are applied to the Processing Engine waveform processing FPGA This block deformats up samples interpolates demodulates and otherwise processes the data to generate the signals needed to create the displays Rasterizing Engine Rasterizer eng
6. Table i Related documentation This manual supports servicing to the module level of the WFM7200 Waveform Monitor which process video signals for display on an internal XGA LCD The instrument finds use as a monitor for broadcasting production and post production environments This manual explains how to troubleshoot and service the monitor to the module level The manual 15 divided into the following sections Introduction provides a general product description and tells where to find product installation information m Theory of Operation provides descriptions of the WFM7200 Waveform Monitors modules m Adjustment Procedures details the adjustments that to perform if the instrument 15 out of specification m Maintenance tells you how to troubleshoot the product to the module level and how to handle the modules m Replaceable Parts illustrates the replaceable modules and mechanical parts and provides replacement part numbers The following terms and conventions are used throughout this manual The term instrument is used interchangeably with the more formal term WFM7200 Waveform Monitor This manual assumes you have access to the following manuals when servicing this product These manuals ship with the product and can also be downloaded from the Tektronix Web site Item Purpose Location WFM7200 Waveform Monitor User Operation instructions and explanation Product Documentation CD Manual of features
7. Refer to Contacting Tektronix on the back of the Title page for the mailing address the email address and phone number Seal the shipping carton with an industrial stapler or strapping tape Shipping to the Service Center Contact the Service Center to get an RMA Return Material Authorization number and any return or shipping information you may need If the instrument is being shipped to a Tektronix Service Center enclose the following information m The RMA number m The owner s address m Name and phone number of a contact person m and serial number of the instrument m Reason for returning A complete description of the service required Mark the address of the Tektronix Service Center and the return address on the shipping carton in two prominent locations WFM7200 Waveform Monitor Service Manual 47 Repackaging Instructions 48 WFM7200 Waveform Monitor Service Manual Replaceable Parts This section contains a list of the replaceable modules for your instrument Use this list to identify and order replacement parts Note that not all parts listed in this section are present on every model The parts present will depend on the model and options installed Parts Ordering Information Module Servicing Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix products are sometimes made to accommodate improved components as they become availab
8. See Table 8 on page 39 Table 8 Tools required for module removal Item General Tool no Name Description number 1 Screwdriver handle Accepts Torx driver bits 620 440 2 T 10 Torx tip Used for removing mostinstrument 640 235 screws Torx driver bit for T 10 size screw heads 3 T 15 Torx tip Used for removing instrument 640 247 screws Torx driver bit for T 15 size screw heads 4 1 8 inch flat bladed Screwdriver for unlocking cable Standard tool screwdriver connectors 5 Angle Tip Tweezers Used to remove front panel knobs Standard tool 6 3 46 inch nut driver Used to remove jack screws and Standard tool front panel standoffs 7 5 46 inch nut driver Used to remove nut on AC ground Standard tool lug 8 MA 800G Soldering Aid Used to remove the front panel trim Standard tool spudger 9 Bomar DB36400 Special BNC socket wrench with Controlled Torque Used to remove Audio board BNCs 10 Soldering iron 15 W Used for replacing Main board fuses Standard tool 11 Long nose pliers Used to compress connector lock tabs Standard tool WFM7200 Waveform Monitor Service Manual 39 Removal and Replacement Procedures Module Removal The removal of most of the modules is a straightforward process and can be determined by a quick study of the exploded diagrams in the Replaceable Parts List The following table shows what to remove to access each module See Table 9 on page 40 Table 9 Module r
9. 04 CIRCUIT SUBASSY ANALOG AUDIO OPTION 2 671 6478 00 CIRCUIT BD SUBASSY AUDIO MAIN OPTION BD SAFETY CONTROLLED 3 119 7167 00 CIRCUIT BD ASSY CAT552 DOLBY DECODER MODULE 72 PIN SIMM SAFETY CONTROLLED 4 870 0189 00 1 CIRCUIT BD SUBASSY 3G EYE TESTED Option PHY3 870 0196 00 1 CIRCUIT BRD ASSY SDI UNTESTED 3893982XX ROHS COMPLIANT Option SDI 5 870 0258 00 1 CIRCUIT BD SUBASSY COMPOSITE 389 4150 00 WIRED ROHS COMPLIANT 6 131 7881 00 1 CONN IO PCB USB SERIES A FEMALE RTANG ON EDGE 1 X 4 2 5MM CTR 13 90 H X 2 0 TAIL 30 GOLD W BOARD RETENTION 7 131 7717 00 1 CONN JACK PHONE PCB PNL FEMALE RTANG 3 POS 4 TERM 8 870 0109 01 1 CIRCUIT BD ASSY MAIN TESTED 3893980xx WIRED ROHS COMPLIANT 9 119 7522 00 1 POWER SUPPLY 130W AC DC 90 264VAC 47 440HZ IN DC DC 117 300VDC IN OUTPUTS 5V 26A 12V 0 5A 5V 0 50A STANDBY REMOTE INHIBIT ACTIVE PFC OPEN FRAME 5X 3 0 X 1 3 UL CSA TUV ROHS SAFETY CONTROLLED 10 407 5373 00 1 SUPPLY SAFETY CONTROLLED 11 174 5791 00 1 CA ASSY SP HV BR 15 00 L amp 4 00 EACH END LINE FILTER TO PWR SUPPLY SAFETY CONTROLLED 12 441 2575 00 1 CHASSIS MODULE 13 134 0246 01 PLUG HOLE COVER BUTTON PLUG 0 578 HEAD DIA X 0 406 THK ACCOM 0 5 DIA HOLE 0 015 0 125 THK PNL NYLON BLACK 94V 2 14 210 0457 00 1 NUT PL ASSEM WA 6 32 X 0 312 STL PL W LOCKWASHER STEEL ZINC FINISH 15 211 0119 00 2 SCREW MACHINE 4 40 X 0 25 FLH 10
10. CTR 56 WFM7200 Waveform Monitor Service Manual Replaceable Parts F1 F3 F2 F5 F8 F6 F7 F621 prster ep Ten of E 4 0 Figure 12 Main board replaceable components WFM7200 Waveform Monitor Service Manual 57 Replaceable Parts Table 13 Replaceable parts list See Figure 13 Fig amp Tektronix Serial Serial index part no no number number effective discontd Qty Name amp description 5 4 ANALOG AUDIO BREAKOUT CABLE Note Optional Accessory 1 012 1688 00 1 CABLE ASSEMBLY ANALOG AUDIO BREAKOUT 2 200 4804 00 1 COVER SHIELD ELEC CONN 37 POS DSUB ZINC 3 131 0422 00 1 CONN DSUB SLDR CUP PNL MALE STR 37 POS 0 112 0 186 0 126 TAIL 0 125 DIA THRU MTG Figure 13 Analog audio breakout cable assembly 58 WFM7200 Waveform Monitor Service Manual Replaceable Parts Table 14 Accessories Fig amp Serial Serial index Tektronix part no no number number effective discontd Qty Name amp description Standard Accessories 071 3023 xx 1 PRINTED MANUAL TECH SAFETY AND INSTALLATION INSTRUCTIONS Subpart of ENGLISH JAPANESE SIMPLIFIED CHINE
11. STL CAD PLT T15 16 850 0124 00 1 FINAL ASSEMBLY LCD DISPLAY MODULE TESTED 17 214 5152 00 1 SPRING CLIP 54 WFM7200 Waveform Monitor Service Manual Replaceable Parts 0000 9999 9 main board To J21 on the main board Figure 11 Chassis components 55 WFM7200 Waveform Monitor Service Manual Replaceable Parts Table 12 Replaceable parts list See Figure 12 Fig amp Serial Serial index Tektronix part no no number number effective discont d Qty Name amp description 5 3 Main Board 1 159 5022 00 8 FUSE 5 0A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT 451005 SAFETY CONTROLLED 2 260 5015 00 1 SWITCH PUSH SPST TACT 50MA 50V MOMENTARY SILVER CONTACTS KSC221G GULLWING SMD 3 159 5018 00 1 FUSE 3 0A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT SAFETY CONTROLLED 4 159 5003 00 1 FUSE THRM CHIP SELF RESETTING FUSE 1 1A HOLD 2 2A TRIP AT 20 DEG C 30V MAX SAFETY CONTROLLED 5 159 5014 00 1 FUSE 2 0A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT SAFETY CONTROLLED 6 260 5015 00 1 SWITCH DIP SPST SLIDE DIP 4 POSITION GOLD OVER NICKEL 0 4VA 0 20VDC 0 05 HALF 004 05 1 5 0 7 146 0109 00 1 BATTERY DRY 3 0V LITHIUM MANGANESE DIOXIDE 210MAH 20 X 3 22MM COIN CELL WITH SOLDER TABS CR2032 1HF 1 8 131 7107 00 1 CONN HDR SMD MALE RTANG 1 X 10 0 049
12. Service Center or representative WFM7200 Waveform Monitor Service Manual General Maintenance Inspection Exterior Inspect the outside of the instrument for damage wear and missing parts using the following table as a guide Immediately repair defects that could cause personal injury or lead to further damage to the instrument Table 1 External inspection checklist Item Inspect for Repair action Cabinet front panel and cover Cracks scratches deformations damaged hardware Repair or replace defective module Front panel knobs Missing damaged or loose knobs Repair or replace missing or defective knobs Connectors Broken shells cracked insulation and deformed contacts Dirt in connectors Repair or replace defective modules Clear or wash out dirt Carrying handle and cabinet feet Correct operation Repair or replace defective part Accessories Missing items or parts of Repair or replace damaged items bent pins broken or or missing items frayed frayed cables and damaged cables and defective connectors modules LCD Cracks Replace the LCD assembly Dirty Clean with glass cleaner Inspection Interior To access the inside of the instrument for inspection and cleaning you will need to remove the top cover Inspect the internal portions of the instrument for damage and wear using Table 4 2 as a guide Defects found should be repaired immediately If a
13. Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES W2 15AUG04 Table of Contents General safety sUmmnmaty ere tne ee e IRR e RICE V En aceasta E EA NAR QU POR IQ Re cta D n iv Service safety SUMMALY teen bae a ad d atuq sha NS 1 luc pisya Manual Related 5 EEES 1 1 Specifications aor 1 Performance a tre Up h
14. board Fails any of these Power On Diagnostics m Main Board Option m Main Board Power Supplies m Main Board Sensor m Main Board Serial EEPROM m Main Board Serial FLASH m DSPFPGA A B COMM m DSP FPGA A B Program m Display m Display FPGA Program Review messages in diagnostic log Perform primary power supply checks Perform secondary power supply checks Run Advanced Diagnostics and look for other information Replace the main board Fails any of these Power On Diagnostics m Composite DAC Comm m Composite SPI Comm m Front Panel Version Information Review messages in diagnostic log Perform primary power supply checks Perform secondary power supply checks Run Advanced Diagnostics and look for other information Replace the Composite board WFM7200 Waveform Monitor Service Manual 23 General Maintenance Table 4 Symptoms and causes cont Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow Fails any of these Power On Review messages in diagnostic log Diagnostics Perform primary power supply checks m Eye Hardware Revision Perform secondary power supply checks Run Advanced Diagnostics and look for other information m Eye Board Cable Versi ye Board Cable Versi n Replace the EYE PHY board m Eye Register Readback m Eye Board Power Supply m Eye Board Cal EEPROM Failures while running the Perform secondary power supply checks advanced diagnos
15. is to isolate a problem to a module or board so it can be replaced This guide does not provide information to troubleshoot to the component level Standard boards and modules m Power Supply m Display Assembly LCD Front Panel board with buttons LEDs and knobs m board WFM7200 Waveform Monitor Service Manual 21 General Maintenance Optional boards Table 3 Required test equipment Test equipment SDI serial digital video test generator with embedded audio and composite signal source Varies with installed options SD Need SD SDI source HD Need HD SDI source 3 Gb s Need 3 Gb s SDI source CPS Need composite SDI source SDI input for instruments without Option PHY3 Eye for Option PHY3 Composite input for Option CPS Audio Main for Option AD and DPE Analog Audio for Options AD and DPE Dolby Decoder module for Option DPE Requirements 1080p 59 94 3 Gb s HD signals required 100 color bars m SDI Matrix Split Field Pathological Signal Example Tektronix TG700 with an HD3G7 module Embedded audio needed for audio options 1080i 59 94 HD signals required m 100 color bars m 10 bit shallow ramp m SDI Matrix Split Field Pathological Signal m 100 sweep Tektronix TG700 with HDVG7 module Embedded audio needed for audio options 525 270 SD signals required m 100 color bars 10 bit shallow ramp m SDI Matrix Pathological Signal 100 sweep Tektronix TG
16. of power on tests If any failures are indicted then refer to the action as noted above 32 WFM7200 Waveform Monitor Service Manual Run Advanced Diagnostics Isolating Lissajous Display Errors Option Troubleshooting General Maintenance To run the Advanced diagnostics press the CONFIG button then select Utilities 7 Run Advanced Diags Advanced Diagnostics includes tests that check interfaces between FPGAs and memory on the Main board If any of these tests fails replace the Main board The audio Lissajous phase display uses a serial data path between the audio and main boards A failure in this data path can be due to a problem on either board Perform the following tests to isolate the problem to one board or the other 1 Prepare a test oscilloscope with the following settings Control Setting Vertical Scale 2 00 Vidiv Horizontal Scale 200 ns div 2 Check the Lissajous bus clock by performing the following substeps a Put the oscilloscope probe on of connector 1641 on the audio board Verify the signal is 23 V and is a continuous 50 duty cycle squarewave b Ifthe signal at 1641 15 not as described in step a the audio board most likely has a failure otherwise replace the main board 3 Check Lissajous bus frame and data signals by performing these substeps a Putthe oscilloscope probe on connector J641 pin B2 of the audio board and verify the signal is 3 V and togg
17. other PHY3 functions operate correctly then a cable meter circuit problem is indicated Replace the PHY3 board Jitter Readout and Jitter Meter Problems These measurements are derived from sampled recovered clock sine wave data Operation is unlikely to fail if the basic Eye pattern display works correctly Measurement accuracy is not adjustable but jitter noise floor depends on adjustment of Eye HD CDR calibration items Eye Amplitude Eye Risetime Eye Falltime and Eye Rise Fall difference Readout Problems These readouts are only available with Option PHY3 These readouts are derived from the Eye pattern display Measurement accuracy depends on the Eye Gain calibration items and on front end bandwidth and transient response which are not adjustable Operation 15 unlikely to fail if the basic Eye pattern display works correctly It is normal for these measurements to stop or become intermittent 1f there is excessive waveform noise aberrations Jitter or cable loss WFM7200 Waveform Monitor Service Manual General Maintenance Cha Si eee Secondary power gt B gt p supply test points EE m OU EE EE j iat F1 F4 F2 8 27 F5 F8 F6 7 i J22 0519 D 22222 i m i i pR 425 056 T d E n E mu D p 2 igi i p
18. prevent ESD See page 17 Getting Started This procedure consists of two main sections first section contains the Symptoms and Causes table and the second section contains a set of Detailed Troubleshooting Procedures The table lists common problems and should help you identify the problem or it may direct you to one ofthe detailed troubleshooting procedures in the second section If you do not find your instrument s problem in the table or if no specific problem was reported by the user then follow the steps in the Unknown Problem section in the Symptoms and Causes table The WFM7200 Waveform Monitor is highly configurable and its behavior is sometimes complex Before troubleshooting in depth verify that m The installed options are as expected See CONFIG gt Utilities gt View Instrument Options m The current settings support the expected behavior good first step is to recall the Factory Presets To do this press PRESET gt Recall Preset gt Recall Factory Preset To properly test this instrument you must have appropriate signal sources Depending on what portion of the instrument you are testing this might include Composite video Serial Digital Video Analog Audio or Digital Audio In some cases you may also need receivers or an oscilloscope to check outputs These instruments consist of several boards and major components Some of these are optional as shown below The objective of this troubleshooting guide
19. the AES B port Audio Outputs There are two audio outputs Analog and AES Both outputs always follow the source that is currently selected for the audio bar display The analog outputs can come from any input The selected signal output from the FPGA 15 converted from digital to analog and then sent as a balanced output to the 62 pin rear panel analog audio connector The AES B connectors can be configured as outputs for use with any input type They can serve as an active loopthrough if the input is AES a de embedder if the input is embedded or an A D converter if the input is analog Up to six decoded Dolby audio channels may be output if Option DPE is installed Option PHY3 Option PHY3 provides the following features m Eye pattern display Equalized Eye pattern display B Jitter readout m Jitter Meter m Cable Loss readout m Test Signal Output B Approx Cable readout WFM7200 Waveform Monitor Service Manual 7 Theory of Operation Operation m Source Level readout m Jitter waveform display m Eye Amplitude readout m Eye Risetime readout Eye Falltime readout m Eye Rise Fall difference readout 1 1 Requires Option PHY3 NOTE SD HD and 3 Gb s signals can be used with these features All instrument models come standard with SD SDI and HD SDI 3 Gb s signals require Option 3G be installed The hardware to support these features is contained on the PHY3 board The Audio blocks are not shown in t
20. the instrument remove the four T 10 screws securing the power supply shield to the chassis 6 Lift the power supply out of the chassis WFM7200 Waveform Monitor Service Manual Removal and Replacement Procedures 7 Disconnect the line filter cable from CN1 on the power supply 8 The power supply is secured to the shield by two screws and two posts Remove the two T 15 screws 9 Liftthe power supply off of the two posts and out of the shield Fan Assembly Remove the fans and baffle as a unit 1 Remove the two T 10 screws one on each side of the instrument chassis that secure the baffle to the chassis 2 Uselong nose pliers to compress the lock tab on the connector and disconnect the fan power cables from J11 Fan 1 and J12 Fan 2 on the Main board See Figure 7 on page 44 3 Lift the baffle out of the instrument Front Panel LCD Assembly Remove the front panel and LCD assembly as a unit For additional clearance you may remove the Fan assembly first 1 Remove the six 10 screws that secure the front panel assembly to the chassis two on each side and two on the bottom 2 Pull the front panel assembly forward being careful of the Main board extension containing the headphone and USB connectors until they clear the LCD bracket 3 Disconnect the cables connecting the Front panel LCD assembly to the Main board at J27 J31 and J21 See Figure 7 on page 44 WFM7200 Waveform Monitor Service Manual 43
21. 0 DEG STEEL BLACK ZINC POZ 16 131 4131 00 1 CONN PLUG ELEC MALE W LOCKING ADPTR EXT MTG SAFETY CONTROLLED 17 211 0734 00 4 SCREW MACHINE 6 32 X 0 250 FLH100 STEEL ZINC FINISH T 10 TORX DR 18 119 7086 00 1 FILTER EMI AC LINE CONNECTOR INPUT FILTER 6 0A 120 250VAC DC 400 HZ 2 2 NF CY 100 NF CX IEC INPUT FAST ON SOLDER LUG OUTPUT CHASSIS MOUNT SAFETY CONTROLLED FN9222 6 06 19 211 0950 00 4 SCREW MACHINE M2X 4X3L PHL PNH STEEL ZINC FINISH 20 220 0497 00 7 NUT PLAIN HEX 0 5 28 X 0 562 HEX BRS NI NICKEL PLATED 21 210 1039 00 27 WASHER LOCK 0 521 ID INT 0 025 THK STEEL ZINC FINISH 22 214 3903 00 6 SCREW JACK 4 40 X 0 312 LONG 0 188 HEX HEAD STAND OFF 4 40 INT THD X 0 312 THD EXT 4 40 23 211 0722 00 11 SCREW MACHINE 6 32 X 0 250 PNH STL CDPL T 15 TORX DR 24 131 7721 00 1 CONN JACK PCB PNL RJ45 CAT5E W LEDS YELLOW amp GREEN ORANGE FEMALE RTANG 8 POS 0 100 CTR 0 517 H X 0 13 TAIL 10 100 1000 BASE TX AND RX MAGNETICS MODULE 30 GOLD SAFETY CONTROLLED 25 131 8089 00 1 CONN DVI I FEMALE RTANG PANEL MOUNT WFM7200 Waveform Monitor Service Manual 51 Replaceable Parts Table 10 Circuit boards and connectors See Figure 10 cont Fig amp Serial Serial index Tektronix part no no number number effective discont d Qty Name amp description 26 131 8271 00 3 CONN RF PLUG BNC FEMALE RTANG 75 OHM SMT CENTER PIN HIGH BW AND RETURN LOSS LOW PROFILE 0 515 TALL 0 275 CENTER OFF
22. 7 Removal and Replacement Procedures Removal and Replacement Procedures This section contains information about removal and replacement of all modules in the waveform monitor Preparation WARNING Before doing this or any other procedure in this manual read the safety summaries found at the beginning of this manual Also to prevent possible injury to service personnel or damage to the instrument components read Installation in Section 2 and Preventing ESD in this section This subsection contains the following items B This preparatory information that you need to properly do the procedures that follow m ist of tools required to remove and disassemble all modules Procedures for removal and reinstallation of the modules 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 NOTE Read Equipment Required for a list of the tools needed to remove and install modules in this instrument See Table 8 on page 39 Read the cleaning procedure before disassembling the instrument for cleaning Equipment Required Most modules in the instrument can be removed with a screwdriver handle mounted with a size T 10 Torx screwdriver tip All equipment 38 WFM7200 Waveform Monitor Service Manual Removal and Replacement Procedures required to remove and reinstall the modules is listed in the following table
23. 700 with DVG7 module Embedded audio needed for audio options Composite signals required for Option CPS NTSC SMPTE bars Tektronix TG700 with AVG7 module XGA Monitor Computer monitor capable of 1024 x 768 x 60 Hz scan rate AES Audio Signal Generator If any audio option installed 48 kHz 24 bit word length signals Rohde amp Schwarz UPV Tektronix AM700 and 70 Analog Audio Signal Generator If any audio option installed Rohde amp Schwarz UPV Tektronix AM700 and 70 Voltmeter Fluke 87 or equivalent DC Ammeter with Clamp on pickup 20 Amp DC capable Fluke 336 or equivalent Oscilloscope Video trigger capability Tektronix TDS3000C Series Tektronix DPO70404 22 WFM7200 Waveform Monitor Service Manual Table 4 Symptoms and causes Symptom General Maintenance Possible Sources or Recommended Detailed Troubleshooting Procedure to follow No LEDs lit and or LCD not working Perform general checks Perform primary power supply checks Perform secondary power supply checks Perform Front Panel button Troubleshooting Perform LCD troubleshooting test Replace main circuit board or Front Panel assembly as indicated by above tests Inconsistent or partial hardware failures Perform primary power supply checks Perform secondary power supply checks Examine Power up Diagnostics results in the Diagnostic Log Run Advanced Diagnostics Replace Main circuit
24. G Option PHY3 only m Jitter Noise Floor Option PHY3 only B Eye Gain Option PHY3 only m PixMon Output m Composite Analog Input DC Offset Restore Off Option CPS only m Composite Analog Vertical Measurement Accuracy Option CPS only m Composite Analog Frequency Response Option CPS only m Analog Audio Level Meter Accuracy Over Frequency Options AD and DPE only After making the adjustment shown here repeat the failed Performance Verification step Required Equipment These adjustment procedures require the same equipment as the Performance Verification procedure For more details refer to Specifications and Performance Verification Procedures NOTE If you do not see the calibration case you are looking for make sure to go to the next page using the up or down arrow key WFM7200 Waveform Monitor Service Manual 11 Adjustments Cable Meter SD HD and 3G Clock Extractor Jitter Noise Floor Eye Gain 1 If any cable length reading is outside the specification perform the following adjustment procedure Perform both the Short and Long steps for any input SDI A or SDI B and any standard HD SD and 3 Gb s that was found to be outside the specification NOTE Be sure to use a generator with SDI output set as close as possible to 800 mV since the Cable Meter adjustment establishes the Source Level and the Approx Cable cable length calibration Press CONFIG select Utilities gt Calibrat
25. Manual Replaceable Parts Green with yellow stripe 0393 012 Figure 10 Circuit boards and connectors WFM7200 Waveform Monitor Service Manual 53 Replaceable Parts Table 11 Chassis components See Figure 11 Fig amp Tektronix part Serial Serial Qty Name amp description index number no no number effective discont d 5 2 Chassis Components 1 200 5100 00 1 COVER TOP CHASSIS SAFETY CONTROLLED 2 386 7435 00 2 SUPPORT CIRCUIT BOARD 3 211 0734 00 18 SCREW MACHINE 6 32 X 0 250 FLH100 STL CDPL T 10 TORX DR 4 211 1117 00 2 SCREW MACHINE 4 40 X 0 187 PAN HEAD STL CD PL T 10 TORX DR 5 850 0126 00 1 BEZEL ASSEMBLY FRONT PANEL CONTROLLER 6 129 1636 00 2 SPACER POST 4 40M F 0 687L SST 0 188HEX 7 863 0209 00 1 CIRCUIT BD SUBASSY 389410200 FP ROHS COMPLIANT 8 850 0125 00 1 FRAME FRONT BEZEL PC ABS TV GRAY SAFETY CONTROLLED 9 366 0859 01 3 ASSEMBLY KNOB 470 DIAMETER SOFT TOUCH 10 174 5652 00 1 CABLE ASSEMBLY POWER SUPPLY 10 PIN 11 174 5428 00 1 ASSY SHIELDED RIBBON ADAPTER XGA LCD DISPLAY 20 PIN 12 174 5485 00 1 CABLE ASSEMBLY DISPLAY INVERTER 15 PIN LED BACKLIGHT TO DISPLAY 13 119 6554 00 2 FAN ASSEMBLY 12V 0 11A 1 3W 28CFM 2450RPM 27DBA 80MM SQ X 20MM 6 IN 3 LEAD WITH CONN UL CSA VDE SAFETY CONTROLLED 14 407 5372 00 1 BRACKET FAN MOUNTING SAFETY CONTROLLED 15 211 1050 00 8 SCREW MACHINE 6 32 X 0 312 L PNH
26. Removal and Replacement Procedures 0393 008 Figure 7 Front panel and fan cable connections Remove the bezel from the LCD assembly Remove to bezel from the front panel assembly to access the front panel board See Figure 8 on page 44 4 Remove the two T 10 screws that secure the LCD Assembly to the display bracket 5 Usea Phillips screwdriver to remove the two Pozidriv screws securing the bottom of the bezel to the display bracket 6 Tilt the bottom of the display bracket up and slide the display brackets out from underneath the bezel clips leading the front panel cable through the cutout in the bracket Front panel screws EM Bezel securing clips 4 0393 010 Bezel securing screws Figure 8 Front panel disassembly 44 WFM7200 Waveform Monitor Service Manual Removal and Replacement Procedures Remove the front panel board from the bezel The front panel board can be removed from the bezel and replaced if needed See Figure 9 on page 45 1 Remove the three knobs from the front panel 2 Remove the one T 10 screw that secures the front panel to the bezel 3 Use a 3 5 inch nutdriver to remove the two jackscrews that secure the front panel board to the bezel 4 Liftthe front panel board away from the bezel Front panel board Bezel Screw Jackscrews 0393 009 Figure 9 Front panel board removal Main Board You will need to remove all of th
27. SE 020 3005 xx 077 0667 b MANUAL TECH USER ENGLISH 077 0673 MANUAL TECH RELEASE NOTES 077 0669 XX MANUAL TECH SPECIFICATIONS AND PERFORMANCE VERIFICATION TECHNICAL REFERENCE 077 0391 XX X MANUAL TECH SYSTEM INTEGRATION INSTRUCTIONS 077 0261 xx MANUAL TECH MANAGEMENT INFORMATION DATABASE MIB PROGRAMMER 063 4427 xx 1 DOCUMENTATION PRODUCT CD Subpart of 020 3102 xx See Description 1 CABLE ASSY POWER Option Country P N 0 061 0066 00 A1 UNIV EURO 161 0066 09 A2 UK 161 0066 10 A3 AUSTRALIA 161 0066 13 A4 USA 240 V 161 0066 12 A5 SWITZERLAND 161 0154 00 A6 JAPAN 161 0298 00 A10 CHINA 161 0304 00 Optional Accessories 650 4393 XX CABINET PORTABLE CABINET WITH HANDLE FEET TILT BAIL AND FRONT WFM7F02 PANEL COVER 200 4716 00 COVER FRONT PROTECTIVE PC ABS FR110 TV GRAY 650 4445 XX RACK ADAPTER DUAL SIDE BY SIDE WFMRACK NN 650 4394 XX WFMRACK ON 012 1688 00 CABLE ASSEMBLY ANALOG AUDIO BREAKOUT WFM7200 Waveform Monitor Service Manual 59
28. SET 30 GOLD 27 211 0722 00 10 SCREW MACHINE 6 32 X 0 250 PNH STL CDPL T 15 TORX DR 28 131 3378 00 4 CONN RF JACK BNC 50 OHM FEMALE RTANG PCB REAR PNL 0 5 28 THD 0 625 H X 0 187 TAIL W O FLANGE W MTG POSTS METAL BODY 29 333 4593 00 2 REAR PANEL SAFETY CONTROLLED STD SDI 30 131 7582 00 1 CONN DSUB PCB FEMALE RTANG DUAL STACKED 15 POS HD LOWER 9 POS UPPER SAFETY CONTROLLED 55 333 4592 00 1 REAR PANEL SAFETY CONTROLLED 3GEYE 31 131 7564 00 4 CONN RF PLUG DUAL STACKED BNC PCB PNL MNT FEMALE RTANG 75 OHM ZINC DIE CAST HOUSING 32 131 M057 00 CONN RF PCB FEMALE BNC 750HM EDGE LAUNCH 34 210 0410 00 SCR ASSEM WSHR 4 40 X 0 437 PNH STL CDPL T 10 TORX DR STD 214 3903 00 SCREW JACK 4 40 X 0 312 LONG 0 188 HEX HEAD STAND OFF 4 40 INT THD X 0 312 THD EXT 4 40 OPT AD OR DPE ONLY 4 33 220 0271 00 8 SPANNER NUT AND LOCKWASHER 2 2 35 333 4489 01 1 PANEL REAR AUDIO OPTION 36 200 4800 00 1 COVER MINI 2X FEX 440 SAFETY CONTROLLED 37 131 7272 00 1 CONN DSUB PCB PNL FEMALE 62 POS RTANG 0 100 CTR 0 495 H X 0 125 TAIL 30 GOLD 4 40 THD INSERTS BOARD RETENTION HIGH DENSITY CONN 39 174 5653 00 1 CABLE ASSEMBLY POWER SUPPLY HIGH CURRENT 40 131 6521 00 4 CONTACT ELEC EMI CLIP ON 0 38 L X 0 500 W 2 CONTACTS X 0 45 H ELECTROLESS NICKEL PLATE Quantity will vary depending on instrument model and installed options 52 WFM7200 Waveform Monitor Service
29. There are multiple temperature sensors in different locations in the instrument including some mounted on the option boards The control processor reads the temperature sensors and sets a target speed for the fans The fan circuit holds the fan speed at the target by measuring the fan tachometer output allowing reliable operation at low speed If a fan is not turning the circuit senses the stall and turns on a red LED DS11 DS12 on the Main board The fans are tested at power on Ifa fan fails a message is shown on screen and also entered into the diagnostic log Power Supply and Distribution The power supply has a universal AC input enabling it to accommodate 90 to 264 VAC without any user range switching The output is 5 VDC Circuits convert this output to any other supply voltage that they require at the point of usage Fuses on the Primary supply 5 V output protect the main board The secondary supplies and their tolerances are specified in the troubleshooting section The location of the supply test points 15 shown in the Maintenance section 10 WFM7200 Waveform Monitor Service Manual Adjustments The waveform monitor does not normally require any adjustments The adjustments which can be made are semi automated and should only be made while performing a Performance Verification Make the appropriate adjustment if the instrument fails one of these tests in the Performance Verification procedure m Cable Meter HD SD and 3
30. WFM7200 Waveform Monitor Service Manual Tektronix 077 0675 00 WFM7200 Waveform Monitor Service Manual 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 077 0675 00 Tektronix Copyright O Tektronix rights reserved Licensed software products are owned Tektronix or its subsidiaries or suppliers and are protected by national copyright laws and international treaty provisions Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektronix Inc Contacting Tektronix Tektronix Inc 14150 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA For product information sales service and technical support 7 n North America call 1 800 833 9200 Worldwide visit www tektronix com to find contacts in your area Warranty 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
31. alibration case and press SEL 10 to start Adjust the oscilloscope trigger level for a stable display Use the General knob to adjust the signal zero level to 0 V on the oscilloscope Follow the instructions at the bottom of the calibration screen to Save and Exit Calibration mode WFM7200 Waveform Monitor Service Manual Adjustments Composite Analog Input Perform the following steps if the Offset is outside the specification DC Offset Restore Off Option CPS 2 1 Press the Config button Select Utilities gt Calibration and then press SEL to enter the calibration menu Navigate to Composite DC Offset and press SEL to automatically adjust the offset Follow the instructions at the bottom of the screen to Save and Exit Calibration mode Composite Analog Vertical Perform the following steps if the Amplitude is outside the specification Measurement Accuracy Option CPS m Uc 1 Connect a 100 color bar signal from the precision generator to the Composite A input Terminate the loop through with a precision 75 Q termination Press the CONFIG button Navigate to Utilities Calibration and then press SEL Select Composite Waveform Gain and then press SEL Follow the on screen instructions to adjust the gain Follow the instructions at the bottom of the screen to Save and Exit Calibration mode Composite Analog Perform the following steps if the Frequency Response is outside the specificatio
32. ans 1 Options and o Ex EIE RUE EE TRE TERRE 1 N EA IE RA DO Ra M en 1 Hardware Installation o1 LS aeree etes tent te re pas Ve Det dederit iens 2 Product Upgrade uuu es eg tanned ose eaa vues CEA eis dunes hayaq niyasa TRE 2 Operating Information ERR n 2 Theory Of Operation uuu 3 Main Board FI DoD Y AOI E 5 Front Panel u 6 Composite Input Option 6 Audio Options AD and DPE 6 Option PHY P u u 7 Fan EEUU 10 Power Supply and 2 2 22 2 10 aasawa 11 Required Equipments ase Deve aded bets 11 PrOCedutes CIR dee she QR REN Pe S RE IIR EIU T ES 11 General Maintenance 17 Preventing ESD 17 Inspection and Cleaning u u E ene e Eas 18 21 Detailed Troubleshooting Pr
33. aveform Monitor Service Manual 25 General Maintenance Detailed Troubleshooting Procedures General Checks Fan Failures 26 The following tests should be run as indicated in the Symptom and Causes table See Table 4 on page 23 The procedures check for specific problems or will help you isolate a problem to a board You can run them at any time for informational purposes but if you do not run the procedures in the correct context then the final recommendation identifying a root cause might be suspect 1 Verify that the power cord is connected 2 Check that all internal cables are correctly connected and seated 3 Check for any discolored or burned components This instrument contains two fans They are controlled by both hardware and software Hardware controls the fans to a certain speed but software sets the speed target as a function of the temperature measured on a variety of temperature sensors If a fan fails its corresponding LED on the Main board lights m 1 fails LED 0512 lights m Fan 2 fails LED DS11 lights A fan failure is sensed through tachometer feedback a fault will be asserted if the fan is not connected is stalled or if the tachometer feedback line is not working correctly If one fan fails the control circuit will increase the voltage to the 13 5 V max level causing the remaining fan to run at maximum speed The normal voltage to drive the fans pin 1 varies from about 6 V to 13 5 V de
34. ble for your instrument Use this list to identify and order replacement parts The following table describes each column in the parts list Column Column name Description 1 Figure amp index Items in this section are referenced by figure and index numbers to the illustrations that follow number Orderable modules show the figure number without an index number 2 Tektronix part Use this part number when ordering replacement parts from Tektronix number 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 No entry indicates the part is good for all serial numbers 5 Qty This indicates the quantity of parts used 6 Name amp description item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification Abbreviations 50 Abbreviations conform to American National Standard ANSI Y1 1 1972 WFM7200 Waveform Monitor Service Manual Replaceable Parts Table 10 Circuit boards and connectors See Figure 10 Fig amp Serial Serial index Tektronix part no no number number effective discont d Qty Name amp description 5 1 Circuit Boards and Connectors 1 671 5764
35. ces though either the SPI or the I2C bus Audio data is input to the control processor via the 8 bit HPI bus The control processor interfaces to the Ethernet through a dual rate connection This allows the network connection to run at 10 or 100 MBps LTC LTC inputs come from the remote connector The LTC signal is applied to an A D converter and then input to the waveform processing FPGA which decodes the time code information NOTE The FPGAs decode VITC signals digitally Front Panel The front panel contains a small processor which communicates with the control processor through SPI signaling Reprogramming can be done through the SPI if the front panel processor flash code must be updated Composite Input Option CPS The Composite inputs are also passive loop throughs If unterminated the signal appears twice as large as it should The inputs are either AC or DC coupled depending on the DC Restore setting The selected input signal is filtered and applied to an A to D converter to generate a 14 bit parallel signal which is routed to the DSP FPGA on the Main board where it is demodulated in the digital domain Audio Options AD and DPE The audio option if installed resides in the module slot closest to the power supply There are two audio options available m Option AD adds Analog Audio Monitoring 2 sets of 6 channel Analog Audio inputs and 8 channels of Analog Audio outputs and 16 channels Embedded and AES EBU Digi
36. e replace the composite option board If the problem persists then replace the main board If the problem is in the audio board first check the diagnostic log for audio power up self test failures or audio DSP programming failures If the problem persists replace the audio board Unknown Problems An instrument may come into service with vague or intermittent symptoms In a case like this the following set of tests may help find the problem or the marginal condition 1 Check the diagnostic log This log records a variety of problems and will enable you to see messages for an error that may not be currently happening 2 Check the power supplies by performing the Primary and Secondary Supply checks A marginal supply can lead to intermittent operation if it is near the acceptable threshold This includes the main supply and the secondary supplies on each board 3 Perform the incoming inspection tests This will exercise a majority of the functions in the unit and includes the advanced diagnostics Some parts of the test may not be necessary for all problem areas 4 If the unit has an audio board remove it and recheck any problem areas in the video performance The Audio board can place too much of a load on the supplies if they are marginal If the performance changes with the audio board removed then you should perform the primary and secondary power supply checks and look for an excess load on one of the supplies WFM7200 W
37. e 1 SDI I O Board Option Board Option Board ll spa SDIAOUT meu Ep ECL CPSB SDIA SDI A OUT AES A AES Analogin Analog out SDIB 4 SDIBOUT Dolby D l andE DobyD Module Decoder t i Audio FPGA 1 i 1 DACs 2 Reclocker Audio DSPs H Reclocker 1 T ue EL NONE ERN zc E Tr qc AUDIO _ HEADPHONE uP BUS L Lissajous Data DAC OUT Parallel to Serial SDI OUT Conversion ANALOG DAC PIX OUT Y Y Messursinarit and Raster Picture Processing Recursion DISPLAY I Processing DSP FPGAs ang rocessing S Display Combining DSY FPGA DAC CPU Graphics External Ref In Sync Capture Fast Static Black or Tri Level Stripper LCD SDRAM Memory Backlight DISPLAY Picture Power Ii SDRAM Supply Power Front Panel CPU Buttons amp Knobs T an Peripherals Main Board Figure 1 Main block diagram 4 WFM7200 Waveform Monitor Service Manual Theory of Operation Main Board
38. e 9 Modul emoval 5 erret ECL UNDO haus 40 Table 10 Circuit boards and connectors See Figure 10 00020 02 51 Table 11 Chassis components See Figure 11 eme emen 54 Table 12 Replaceable parts list See Figure 12 sess eee 56 Table 13 Replaceable parts list See Figure 13 22 58 Table 14 ACCESSOTIeS E M ce aed En UTER SR EE 59 WFM7200 Waveform Monitor Service Manual lii General safety summary General safety summary To avoid fire or personal injury iv Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures While using this product you may need to access other parts of a larger system Read the safety sections of the other component manuals for warnings and cautions related to operating the system Use proper power cord Use only the power cord specified for this product and certified for the country of use Ground the product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that
39. e calibration WFM7200 Waveform Monitor Service Manual Adjustments 4 Follow the on screen instructions using the General knob or the up and down arrow keys to adjust the displayed amplitude of the eye waveform until it is 800 mV 5 Press and hold STATUS and then select SAVE and press SEL 6 Repeat for the SDI B input 7 Follow the instructions at the bottom of the screen to Save and Exit Calibration mode m PixMon YPbPr Gain Connect a signal with an identifiable 100 level such as 100 Flat Field or 100 Color Bars to the SDI A input 2 Connect an XGA to 5x BNC adapter cable to the PixMon output 3 Connect the Y Green video signal to the oscilloscope input Use an oscilloscope with a 75 Q input or a 75 Q feed through termination 4 Set the Oscilloscope Control Setting Vert 200 mV Div Horiz 20 us Div Trigger Edge Press the Config button Select Utilities gt Calibration Press SEL to enter the calibration menu 5 6 7 Navigate to the Pixmon Gain calibration case and press SEL to start 8 Adjust the oscilloscope trigger level for a stable display 9 Use the General knob to adjust the signal amplitude not including the sync pulse to 700 mV on the oscilloscope 10 Follow the instructions at the bottom of the calibration screen to Save and Exit Calibration mode PixMon YRGB Black Level 1 Connect a signal with an identifiable black level such as 090 Flat Field or 10095 C
40. e rear panel modules the power supply and the front panel before removing the main board The main board is the largest board in the instrument and spans the length and width of the chassis bottom 1 Remove all ofthe rear panel modules the power supply and the front panel 2 Use a 3 16 inch nutdriver to remove 6 jackscrews from the rear panel two from the Remote connector two from the Pix Mon connector and two from the Ext Display connector 3 Remove the special nuts securing the three BNC connectors to the rear panel NOTE Special nuts are used on the BNC connectors due to the close physical spacing and a special tool is needed to remove them See Table 8 on page 39 WFM7200 Waveform Monitor Service Manual 45 Removal and Replacement Procedures 4 Remove the eleven T 15 screws that secure the main board to the chassis 5 Grasp the main board from the front of the instrument tilt it up slightly and then pull it toward you clearing the rear panel and connectors and removing the main board from the chassis 46 WFM7200 Waveform Monitor Service Manual Repackaging Instructions Repackaging Instructions This section contains the information needed to repackage the instrument for shipment or storage Packaging When repacking the instrument for shipment use the original packaging If the packaging 1s unavailable or unfit for use contact your local Tektronix representative to obtain new packaging
41. ead 15 correct Performs an active bit test on the A D output clocks Checks the serial EEPROM to see which of the analog inputs have been calibrated Tests the Audio DSP FPGA interface The main CPU detects if the DSP heartbeat fails This condition will be shown in the diagnostic log WFM7200 Waveform Monitor Service Manual General Maintenance For audio boards not all errors are reported by the power on diagnostics Therefore if you are detecting a loss in audio functionality check the diagnostic log for any reported audio errors If any errors are found perform the following procedure to narrow the problem to either the audio board the main board or the connection between them 1 Prepare a test oscilloscope with the following settings Control Setting Vertical Scale 2 00 Vidiv Horizontal Scale 5 00 us div 2 Ifthe diagnostic log contains an entry that reads Fail Audio DSP Self Test fpga do the following substeps a Check audio board 08511 the FPGA programmed indicator in the Main board power supply test points and LEDs See Figure 3 on page 35 If this LED is off skip to step b otherwise probe pin D21 of connector J641 of the Audio board the connector to the Main board during the boot sequence If the signal on the pin toggles replace the main board otherwise replace the audio board b Probe pin D20 of J641 on the audio board during the boot sequence If the signal does not exhibit a low to high tran
42. emoval To remove Bezel Front front panel Audio Power panel LCD You must first remove Composite SDI PHY assy supply Main board assy Top cover X X X X X X X Board supports X X X X X Composite X SDI PHY X Analog audio X X Audio main X X Main board Power supply X Fan assembly X Front panel LCD assembly X X Bezel front panel board X Top Cover The top cover is a slip lock design 1 Remove the six T 10 screws at the top cover front corners 2 Remove the four T 10 screws securing the top cover to the rear panel 3 Slide top cover back approximately 2 inch and then lift it from the chassis Board Supports board supports span the width of the instrument chassis holding the tops of the module circuit boards in place 1 Remove the two T 10 screws securing each board support and then lift them from the chassis 2 When reinstalling the board supports make sure that the module circuit boards line up with the slots in the board supports 40 WFM7200 Waveform Monitor Service Manual Removal and Replacement Procedures Rear Panel The rear panel is formed by the chassis and the individual module rear panels which overlap and are bolted together See Figure 6 on page 41 2 Q L zo GO 696 ZA 2 o9 08 OF 85 SOA 08 CMPSTA LOOP 2 o A 99 BE 98 EH SY o9 A 8 9 gt 88
43. essure deionized air approximately 9 psi 2 Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol 75 solution and rinse with warm deionized water A cotton tipped applicator is useful for cleaning in narrow spaces and on circuit boards STOP f after doing steps 1 and 2 a module is clean upon inspection skip Lub 20 the remaining steps If steps 1 and 2 do not remove all the dust or dirt the instrument may be spray washed using a solution of 7596 isopropyl alcohol by doing steps 4 through 6 Gain access to the parts to be cleaned by removing easily accessible shields and panels Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the majority of the alcohol to evaporate Dry all parts with low pressure deionized air rication There is no periodic lubrication required for the instrument WFM7200 Waveform Monitor Service Manual General Maintenance Troubleshooting The procedures in this section will help you trace the root cause of a problem back to one of the replaceable modules In general this is a board level replacement but there are a few components on some boards that are replaceable N WARNING Before performing this or any other procedure in this manual read the General Safety Summary and Service Safety Summary found at the beginning of this manual To prevent possible injury to service personnel or damage to electrical component refer on how to
44. f Test dsp1 perform the following procedure a Check to see if surround display is functioning correctly by doing the following i Press and hold the Audio button ii In the audio menu select Aux Display gt Surround Display iii Press the Audio Input Menu button then select Audio Input gt AES A iv Connect an AES test tone generator to the AES A IN 1 2 connector b Ifthere is nothing displayed on the surround display proceed to step c otherwise replace the audio board Probe pins E15 through E22 and pins D16 17 18 and C17 on audio board connector J641 and verify that the signals on all pins are toggling If any signals are not toggling replace the main board d Probe pins C15 C16 and C19 on connector J641 during the boot sequence and verify that the signals on the pins toggle If they do not toggle suspect the main board e Probe pin B22 on audio board connector 1641 If the signal on the pin does not toggle replace the audio board otherwise replace the main board f Ifall of these steps pass replace the audio board 5 Ifthe Power Up Diagnostics screen reports Audio DSP Self Test X where X 1s any other number or string replace the audio board Examine Power Up examine the Power up Diagnostics results press the CONFIG button then Diagnostics Results in select Utilities gt View Diagnostic Log the Diagnostic Log Each power on is indicated by a boot time stamp followed by a list
45. general care when operating it How often maintenance should be performed depends on the severity of the environment in which the instrument is used A proper time to perform preventive maintenance is just before any instrument adjustment The cabinet helps keep dust out and should normally be in place during operation WARNING 70 prevent injury or death power off the instrument and disconnect it from line voltage before performing any procedure that follows Use a dry low velocity stream of air to clean the interior of the chassis Use a soft bristle non static producing brush for cleaning around components If you must use a liquid for minor interior cleaning use a 75 isopropyl alcohol solution and rinse with deionized water Clean the exterior surfaces of the chassis with a dry lint free cloth or a soft bristle brush 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 instrument that may damaged by it CAUTION Avoid the use of chemical cleaning agents that might damage the plastics used in the instrument Use only deionized water when cleaning the front panel buttons Use a glass cleaner to clean the LCD For the rest of the instrument use a 7526 isopropyl alcohol solution as a cleaner and rinse with deionized water Before using any other type of cleaner consult your Tektronix
46. his block diagram but if installed still connect as shown in the Main Block diagram See Figure 1 on page 4 Each SDI input signal is applied to a cable equalizer The selected input signal is sampled by a wide band track and hold circuit and then digitized The selected input is also applied to a clock recovery circuit The recovered clock is divided by 10 for SD by 20 for HD filtered to form a sine wave and then digitized Both the SDI input and the recovered clock sine wave are sampled by the same asynchronous clock and then both are passed to the main board for processing by FPGAs These arrays produce the Eye Display Jitter Display Jitter Readout and Jitter Thermometer The Eye Display data is further processed to derive the Eye Amplitude Eye Rise Time and Eye Fall Time measurements which are shown in the SDI Status Display The selected SDI input signal also drives the Cable Meter circuit which measures signal energy at two frequencies These measurements are read by the CPU on the Main board which calculates Cable Loss Approximate Cable Length and Source Level for display in the SDI Status screen WFM7200 Waveform Monitor Service Manual Theory of Operation
47. ine resides in the same DSP FPGA as the waveform processing engine This block builds up the variable intensity images in the fast static RAM For each pixel of the display the Rasterizer Engine increments the intensity of that pixel every time the waveform hits its coordinates As a result the waveform areas hit more frequently are brighter For any given frame the intensity map 15 built up in one memory chip and read out of the other The functions swap on the next field Recursion and Picture The output of the rasterizer feeds the picture and recursive processing engine Processing Engine second large FPGA This engine adds the previous frame to the present frame to reduce flicker and improve brightness It also converts the picture and waveform signals from the input rate of 50 or 59 94 Hz to 60 Hz frame rate to work with the DVI I monitor The picture and waveform data combine with the graphics and audio bar information from the control processor and then output to the XGA DAC to drive the external monitor Note that the parallel data from the serial digital inputs connect directly to this FPGA to provide the picture functionality bypassing the waveform processing engine WFM7200 Waveform Monitor Service Manual 5 Theory of Operation Control Processor control processor is in charge of all the operational modes in the instrument It draws the audio bars communicates with the front panel and controls most other internal devi
48. ion and then press SEL to start the calibration process Use the up and down arrow buttons to navigate to the Cable Meter calibration case you want Press SEL to start and follow the on screen instructions Follow the instructions at the bottom of the screen to Save and Exit Calibration mode If the Jitter Noise Floor is outside of the specification perform the Eye CDR Null calibration as described below 1 2 3 Press the CONFIG button Select Utilities gt Calibration and press SEL to enter the Calibration menu Use the arrow buttons to navigate to the appropriate Eye CDR Null calibration case Press SEL to start and follow the on screen instructions Follow the instructions at the bottom of the screen to Save and Exit Calibration mode Restart the Jitter Noise Floor test and then record the new values in the test record provided in the Specifications and Performance Verification manual If the Eye Gain is outside the specification perform the following adjustment procedure for SDI A and SDI B inputs 1 Connect a signal source with an 800 mV 1 MHz square wave signal to the SDI A input Make sure the source is calibrated and the signal amplitude is within a few millivolts of 800 mV Press the CONFIG button and then select Utilities Calibration Press SEL to enter the calibration menu Use the up and down arrow buttons to navigate to the appropriate Eye Gain Adjust selection and press SEL to start th
49. le and to give you the benefit of the latest improvements Therefore when ordering parts it is important to include the following information in your order m Part number Instrument type or model number m Instrument serial number m Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number 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 remanufactured module These modules cost significantly less than new modules and meet the same factory specifications For more information about the module exchange program call 1 800 833 9200 Outside North America contact a Tektronix sales office or distributor see the Tektronix Web site for a list of offices www tektronix com Module Repair and Return You may ship your module to us for repair after which we will return it to you New Modules You may purchase replacement modules in the same way as other replacement parts WFM7200 Waveform Monitor Service Manual 49 Replaceable Parts Using the Replaceable Parts Lists Parts list column descriptions This section contains lists of the mechanical and or electrical components that are replacea
50. les low at regular intervals b Ifthe signal on pin B2 looks OK put the oscilloscope probe on pin B4 Pin B4 is the data line and the signal will have a somewhat random look depending on the audio source Just verify that the signal 1s toggling and is 2 If either signal looks bad at J641 the audio board most likely has a failure otherwise replace the main board The PHY functions depend on the PHY3 and Main boards and the interconnections between them Major Operational or Diagnostic Failure B Check that the 110 pin CPCI connector between the PHY3 and Main boards is correctly seated and secure m Check that the ribbon cable from the PHY3 board to the main board is securely plugged into 15 the PHY3 board and J16 on the main board WFM7200 Waveform Monitor Service Manual 33 General Maintenance 34 Eye Pattern or Jitter Waveform Display Problems Jitter waveform display is only available with Option PHY3 The Eye Pattern and Jitter Waveform displays are formed from data sampled from the input signal and the recovered clock sine wave Eye display bandwidth rise and fall time and transient response aberrations are controlled by circuits contained on the PHY3 board Cable Loss Approx Cable and Source Level Readout Problems These measurements are made by a cable meter circuit This circuit is located on the PHY3 board but is largely independent from the Eye and Jitter display and measurement functions If
51. n Frequency Response Option CPS Connect the precision video generator to one of the CMPST A input connectors and terminate the other connector with the precision terminator Set the precision generator for 700 mV Multiburst The top packet must be 5 75 MHz Press the CONFIG button Navigate to Utilities gt Calibration and then press SEL Select Composite Freq Peak and then press SEL Follow the on screen instructions to adjust the response Follow the instructions at the bottom of the screen to Save and Exit calibration mode Repeat the Composite Analog Frequency Response test in the Performance Verification procedure WFM7200 Waveform Monitor Service Manual 15 Adjustments Analog Audio Level Meter Accuracy Over Frequency If any of the Analog A Inputs failed to meet the specification or even if they are off by more than a few tenths of a dB the following input adjustment can be performed 1 Set analog audio generator as follows Control Setting Frequency 1 kHz Output Level 18 dBu Audio Tone Output Impedance 100 2 Connect the generator balanced BAL analog output to the Analog input that requires adjustment Press the CONFIG button Navigate to Utilities gt Calibration and then press SEL Push the up or down arrow key until the desired Analog Audio input channel 1s highlighted and then press SEL Follow the instructions at the bottom of the screen to Sa
52. ny circuit board is repaired or replaced see if it is necessary to adjust the instrument See Table 2 on page 19 CAUTION 7o prevent damage from electrical arcing make sure that circuit boards and components are dry before applying power to the instrument Table 2 Internal inspection checklist Item Inspect for Repair action Circuit boards Loose broken or corroded solder connections Burned circuit boards Burned broken or cracked circuit run plating Remove and replace damaged circuit board Resistors Burned cracked broken blistered condition Remove and replace damaged circuit board WFM7200 Waveform Monitor Service Manual 19 General Maintenance Table 2 Internal inspection checklist cont Item Inspect for Repair action Solder connections Cold solder or rosin joints Resolder joint and clean with isopropyl alcohol Capacitors Damaged or leaking cases Corroded solder on leads or terminals Remove and replace damaged circuit board Wiring and cables Loose plugs or connectors Burned broken or frayed wiring Firmly seat connectors Repair or replace modules with defective wires or cables Chassis Dents deformations and damaged hardware Straighten repair or replace defective hardware Cleaning Procedure Interior To clean the instrument interior perform the following steps 1 Blow off dust with dry low pr
53. o this product or other property Symbols and terms on the These terms may appear on the product product DANGER indicates injury hazard immediately accessible as you read the marking m WARNING indicates an injury hazard not immediately accessible as you read the marking m CAUTION indicates a hazard to property including the product The following symbol s may appear on the product A amp CAUTION Protective Ground Standb Refer to Manual Earth Terminal tandby WFM7200 Waveform Monitor Service Manual V Service safety summary Service safety summary vi Only qualified personnel should perform service procedures Read this Service safety summary and the General safety summary before performing any service procedures Do not service alone Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation 15 present Disconnect power To avoid electric shock switch off the instrument power then disconnect the power cord from the mains power Use care when servicing with power 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 WFM7200 Waveform Monitor Service Manual Preface Manual Conventions Related Manuals
54. ocedures 2 2 2 2 2 26 Removal and Replacement Procedures 2 2 2 38 38 Module Removal ccc ier EEE 40 Repackaging Instr ctlons eei a Rr ea n DR E Ra Ree YA Pane E en EAR EAS 47 Packaging 47 Shipping to the Service 2 2 2 0 lt 47 Replaceable Parts 49 Parts Ordering Information cedere noe etr dns oce Tui a aqa 49 Using the Replaceable Parts 1518 25 000 50 WFM7200 Waveform Monitor Service Manual 1 Table of Contents List of Figures ii Figure 1 Main block diagram 2222222 hinh hn ehe en 4 Figure 2 Option PHY3 block diagram 9 Figure 3 Main board power supply test points and LEDSs 35 Figure 4 Audio Main board power supply test point 44 36 Figure 5 Analog audio board power supply test point locations 37 Figure 6 Module securing 8 2 22
55. olor Bars to the SDI A input 2 Connect an to 5x adapter cable to the PixMon output 3 Connect the Y Green video signal to the oscilloscope input Use an oscilloscope with a 75 input or a 75 Q feed through termination WFM7200 Waveform Monitor Service Manual 13 Adjustments PixMon PbPr Zero Level 4 Set the Oscilloscope Control Setting Vert 200 mV Div Horiz 20 5 Trigger Edge 5 Press the Config button 6 Select Utilities gt Calibration Press SEL to enter the calibration menu 7 Navigate to the Pixmon YRGB black level calibration case and press SEL to start 8 Adjust the oscilloscope trigger level for a stable display 9 Use the General knob to adjust the signal black level to 0 V on the oscilloscope 10 Follow the instructions at the bottom of the calibration screen to Save and Exit Calibration mode 1 Connect a signal with an identifiable black level such as 0 Flat Field or 100 Color Bars to the SDI A input 2 Connect an XGA to 5x BNC adapter cable to the PixMon output 3 Connect the Pb Blue video signal to the oscilloscope input Use an oscilloscope with a 75 Q input or a 75 Q feed through termination 4 Set the Oscilloscope Control Setting Vert 200 mV Div Horiz 20 us Div Trigger Edge 5 Press the Config button 6 Select Utilities gt Calibration Press SEL to enter the calibration menu 7 Navigate to the Pixmon PbPr zero level c
56. onitor in the instrument chassis the top cover must be installed for safety and for proper cooling or installed in an approved portable cabinet or rack adapter You can also install the instrument in a custom installation such as a console For installation instructions refer to the WFM7200 Waveform Monitor Installation and Safety Instructions or the Rack Adapter Instructions included with your Tektronix rackmount kit Hardware and software upgrades are available for all products either as a field upgrade kit or as a free software download from the Tektronix Web site The WFM7200 Waveform Monitor User Manual includes instructions for updating product software For operating instructions refer to the WFM7200 Waveform Monitor User Manual For more detailed reference information refer to the instrument Online help Press the Help button on the instrument front panel and then use the General knob up down arrow keys and SEL button to navigate through the topics 1 Connect the supplied power cord to rear panel power connector 2 Press the power button on the instrument front panel and the instrument will turn on 3 Wait for the system to complete its power on self tests NOTE The Standby button on the front panel does not disconnect mains power Only the power cord at the rear of the product can disconnect mains power 1 Pressthe power button on the instrument front panel to turn the instrument off 2 Toremove po
57. op front edge of the board See Figure 5 on page 37 Table 7 Analog audio secondary supplies Supply name Range Notes 15 V 14 to 15 5 TP901 15 V 14 to 15 5 TP803 5 VD 4 8 to 5 2 TP5 5 VA 4 8 to 5 2 TP3 3 3 V 3 1 to 3 6 TP2 5 4 5 to 5 5 TP1 The PHY3 board also has multiple secondary supplies and test points along the top edge where they can be probed The Power up Diagnostics measure these so they are not included in this procedure Note that some of these supplies are only active in either SD or HD mode so it is normal for some of them to not be present in some operating modes Perform this test if the power supplies are good but none of the buttons are lit or respond to presses 1 Cycle the power to the unit Immediately after power on three buttons GAIN SWEEP and MAG should be lit continuously and the other buttons should be lit one at a time in a walking pattern 2 Ifthe buttons are not lit check the 10 pin cable from the keypad to the main board J21 If the cable is connected and good then replace the front panel assembly WFM7200 Waveform Monitor Service Manual 29 General Maintenance 30 LCD Troubleshooting Audio Power Up Diagnostic Failure Perform this test if there 1s no display on the LCD but the power supplies test as nominal 1 Connect an external XGA monitor to the Display output on the rear of the instrument Cycle the power and watch the exte
58. ot correct the problem there may be a main board failure in the power switch circuit If the voltage at the output of the supply is not zero but still not correct check the input voltage If the input voltage 15 in the correct range then disconnect the cable at J22 from the main board and recheck the output voltage If the voltage 15 still not correct then replace the power supply WFM7200 Waveform Monitor Service Manual 27 General Maintenance Secondary Power Supply Tests 28 If the no load output voltage 15 correct then reattach the cable to the main board and measure the current by clamping the ammeter around the red wire If the current is less than 20 Amps and the voltage is still bad then replace the power supply If the current is more than 20 Amps then remove module boards and recheck the current If it is still high then replace the main board If not then test with one option board at a time to find the one with excess current and replace that board There are multiple secondary supplies that are derived from the main 5 V supply Be sure all eight 5 V fuses are good as noted in Primary Power Supply Tests before checking the secondary supplies First check the LEDs near the rear left side of the instrument Green LED 0819 indicates there is some 5 V from main supply Next check if any of the three Red LEDs DS5 DS6 or DS7 are on These indicate failures on the general 5 V general 3 3 V and processor 1 5 V
59. pending on temperature and the options installed on the instrument If a fan is not spinning measure the voltage on pin 1 of the connector on that fan If the voltage is near 13 V then replace the fan If the voltage 15 not above 10 V then replace the main board If both fans are spinning but either LED DS11 DSI2 is lit the problem 1s probably the tachometer feedback line on pin 3 of either fan Inspect the wiring and resistors R637 R635 R638 and R636 on the main board and use the oscilloscope to look for a 3 3 V square wave on the tachometer feedback line Replace the affected fan if resistors are intact but there 15 no signal on the tachometer line WFM7200 Waveform Monitor Service Manual General Maintenance Primary Power Supply This section describes methods for verifying the proper operation of the primary Tests power supply WARNING Some parts of this test may require removing the insulating safety shield To avoid personal injury be careful not to contact the circuitry while the shield is removed Be sure to replace the shield as soon as possible to prevent injury The main power supply accepts 90 to 264 VAC and outputs 3 DC voltages 5 V main 5 V standby and 12 V The 5 V standby is always present and powers the on off switch and the reverse voltage shutoff circuit The 5 V main and 12 V supplies are turned on or off by the front panel power button There is a green LED 0519 that will be lit if
60. product without charge for parts and labor or will provide a replacement in exchange for the defective product Parts modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance replaced parts modules and products become the property of Tektronix In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment 15 to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non
61. rnal monitor If the monitor does not display the boot up messages and normal operational screen replace the main board If the external monitor does show the nominal screen check the gray ribbon cable from the internal display to J17 on the main board This carries the XGA data to the display If the gray ribbon cable is OK check to see if the backlight is on Look into the vent holes along the left side of the bezel while you cycle the power You should see the backlight come on when power is reapplied It may help to be in a low light area to see the backlight If the backlight is on replace the front panel assembly If the backlight is not on check the backlight power cable from the backlight inverter on the rear of the display assembly to the main board J18 Also check connector J18 itself for any solder issues If the backlight is still bad replace the front panel assembly although there 15 still a small chance the problem is in the main board It is sometimes difficult to isolate the root cause of audio problems Most audio problems are due to faults on the audio board but the audio board communicates with the main board so in some cases the problem may be there as well Audio Power up Diagnostic Detailed Information The Power up Diagnostic does the following Reads all of the AES decoder internal registers and verifies that what is read is correct Reads all of the D A internal registers and verifies that what was r
62. sition replace the main board c Probe pins and of connector 1641 during the boot sequence If the signal on either of these pins does not toggle replace the main board d Probe pin D19 of J641 on the audio board during the boot sequence If the signal does not exhibit a low to high transition replace the audio board e Ifall signals in a through d are correct replace the audio board 3 Ifthe Diagnostic Log screen reports the failure Audio DSP Self Test dsp0 perform the following procedure a Check to see if the audio board is recognized by the main board by pressing the Main button then CONFIG and selecting Utilities gt View HW SW Version b Ifthere is an audio option listed suspect the audio board otherwise proceed to step c Probe pins E15 through E22 and pins D16 17 18 and C17 on the audio board connector J641 and verify that the signals on all pins are toggling If any signals are not toggling replace the main board d Probe pins C15 C16 and C18 on connector J641 during boot up and verify that the signals toggle If they are not toggling suspect the main board WFM7200 Waveform Monitor Service Manual 31 General Maintenance e Probe pin B21 on audio board connector J641 during the boot sequence If the signal does not toggle replace the audio board otherwise replace the main board f Ifall of these steps pass replace the audio board 4 Ifthe Diagnostics log reports Audio DSP Sel
63. some 5 V power is present This is a useful indicator but does not ensure that the voltage is within tolerance There are also several red LEDs that provide information on the health of other supplies on the board DS5 is a red LED that lights when the fused 5 V supply is low 056 lights when the 3 3 V supply 15 low and 057 indicates when 1 5 V supply is low If the main power supply output is correct between 4 80 V and 5 25 V measured at connector J22 check the eight fuses in the 5 V system near the main board power connector J22 See Figure 3 on page 35 should have 5 V on both sides If not replace the fuse If the main power supply output voltage is zero measured at J22 pin 1 then check the AC input circuit The AC voltage should be the same at the line cord at the input to the power supply and on both ends of the fuse on the input to the supply If the input voltage 15 not correct at any point replace the element in the chain that is not passing the AC input If the input voltage is correct check the 5 V standby supply at connector J25 pin 2 If the standby supply is zero then replace the main power supply If it is between 4 5 V and 5 5 V check the power supply inhibit line at J25 pin 5 If the power supply inhibit line 1s low then replace the main power supply If the power supply inhibit line is high and the unit does not respond to a front panel power button press then try a new front panel If that does n
64. supplies respectively If these are lit the most likely causes are the fuses near J14 but if those are all OK replace the main board Next check the secondary supplies as shown in the table See Table 5 Each supply has a test point in the rear left corner of the Main board See Figure 3 on page 35 If any supplies are out of range replace the main board Table 5 Main board secondary supplies Nominal V Allowed range V Labeled as 1 8 1 7 to 1 9 18V Fan 5 to 13 5 FAN PWR 5 4 15 to 5 25 5V 3 3 3 2 to 3 4 33V 2 5 2 4 to 2 6 25V 1 5 14 to 1 6 15V 1 0 0 95 to 1 05 10V 5A 4 75 to 5 25 5 5 4 75 to 5 25 5 VA 1 2 1 2 to 1 4 1 2 V Check the Audio supplies on the Audio board if an Audio board 15 installed See Table 6 on page 29 The test points are available with the board installed See Figure 4 on page 36 WFM7200 Waveform Monitor Service Manual Front Panel Button Troubleshooting General Maintenance Table 6 Audio main board secondary supplies Supply name Range Measured at 1 5 V 1 425 to 1 575 TP6 3 3 V 3 1 to 3 6 TP8 5V 4 5 to 5 5 TP9 5 V 4 75 to 5 2 TP10 1 26 V 1 20 to 1 32 TP11 1 8 V 1 71 to 1 89 TP95 Check the secondary supplies on the Analog audio board if installed This is the smaller audio card to which the 62 pin DSUB connector is mounted The test points are available with the board installed along the t
65. t board 2 Tiltthe top of the DPE board away from the Audio Main board 3 Lift the DPE board out of the instrument Analog Audio and Audio Main boards Remove the entire Audio module as a unit If necessary the two boards may be separated 1 Remove the four T 15 screws securing the Audio module to the rear panel 2 Liftthe Audio module out of the instrument rocking it gently until the connector separates from J4 on the Main board It may help to loosen the adjacent rear panel screws 3 Use a 3 inch nutdriver to remove the jackscrews securing the ANALOG AUDIO connector on the rear panel you just removed 4 Remove the special nuts securing the eight audio BNC connectors to the rear panel NOTE Special nuts are used on the BNC connectors due to the close physical spacing and a special tool is needed to remove them See Table 8 on page 39 5 Remove the Audio module rear panel from the two circuit boards 6 Separate the Audio module circuit boards at J130 You may want to remove the audio board module first for increased clearance but it is not required 1 Disconnect the brown blue and green yellow primary wires from the line filter See Figure 10 on page 53 2 Disconnect the green yellow ground wire from the chassis using a 5 16 inch nutdriver See Figure 10 on page 53 3 Disconnect the 10 pin cable from J14 on the Main board 4 Disconnect the two wire cable from 122 on the Main board 5 From outside
66. tal Audio support 8 channels at a time This option 15 available for all models m Option adds Option AD capabilities plus support for decoding and monitoring Dolby E and Dolby D Audio This option is available for all models 6 WFM7200 Waveform Monitor Service Manual Theory of Operation Audio Processing Both audio versions have the same basic processing engine This uses an FPGA to route the audio input into two DSP chips whose main function is to calculate the peak values for the selected meter ballistics response characteristics The audio data has two paths to the display On one path peak values are sent to the control processor which then plots the bar and surround displays On the second path raw data samples are sent to the waveform processing engine which interpolates and plots it to generate the lissajous or phase display Audio Inputs There are three basic audio input paths AES analog and embedded AES inputs are accepted at rates up to 192 kHz Analog inputs are digitized at 48 kHz and then go through the same path as the AES inputs The embedded audio path starts at the waveform processing engine First the audio samples are extracted from the serial digital video data using a 12 288 MHz oscillator and sent to the audio board At the audio board the streams are multiplexed into the AES decoders and then follow the same path as the AES data The user can choose to have the de embedded audio output on
67. the instrument adhere to the following precautions to avoid damaging internal modules and their components due to electrostatic discharge ESD 1 2 Minimize handling of static sensitive circuit boards and components Transport and store static sensitive modules in their static protected containers or on a metal rail Label any package that contains static sensitive boards Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules Service static sensitive modules only at a static free work station Nothing capable of generating or holding a static charge should be allowed on the work station surface Handle circuit boards by the edges when possible WFM7200 Waveform Monitor Service Manual 17 General Maintenance 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 Inspection and Cleaning General Care Interior Cleaning Exterior Cleaning 18 Inspection and Cleaning describes how to inspect for dirt and damage It also describes how to clean the exterior and interior of the instrument Inspection and cleaning are done as preventive maintenance Preventive maintenance when done regularly may prevent malfunction and enhance reliability Preventive maintenance consists of visually inspecting and cleaning the instrument and using
68. the product is properly grounded 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 Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Power disconnect The power cord disconnects the product from the power source Do not block the power cord it must remain accessible to the user at all times Do not operate without covers Do not operate this product with covers or panels removed Do not operate with suspected failures If you suspect that there is damage to this product have it inspected by qualified service personnel Avoid exposed circuitry Do not touch exposed connections and components when power is present 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 WFM7200 Waveform Monitor Service Manual General safety summary Terms in this manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage t
69. tics Replace main board m DSP1 QDR Memory 1 m 05 1 QDR2 Memory 2 m DSP2 QDR1 Memory 1 m DSP2 QDR2 Memory 2 m DSY DDR Buffer 1 Memory m DSY DDR Buffer 2 Memory m DSY DDR Trig Buffer Memory m DSYSDRAM Buffer 1 Memory m DSYSDRAM Buffer 2 Memory Diagnostic Log Message Search for an intermittent problem in the audio board cables or main board m Fail AUDIO DSP HEARTBEAT No text or traces on LCD Perform LCD troubleshooting test Traces on LCD but not on Ext Replace Main board Display output 24 WFM7200 Waveform Monitor Service Manual General Maintenance Table 4 Symptoms and causes cont Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow Functional Test Failures Performance Verification Test Failures In case of failure on either Functional or the Performance tests the board at fault is generally obvious Before replacing a board 1 Perform the primary and secondary power supply checks 2 Run the advanced diagnostics and check the diagnostic log for help in isolating the fault If this does not isolate the problem then replace the main board if the test is in one of the following areas m SDI Composite m Ref m LTC m XGA output m Color Palette m Remote I O m Ethernet If the problem is only the SDI input first replace the SDI or PHY3 board depending on option If that does not fix the problem replace the main board If the problem is Composit
70. umentation CD that ships with the product and 15 published on the Tektronix Web site See page vii Related Manuals Performance Verification The Performance Verification procedures for this product are found in the WFM7200 Waveform Monitor Specifications and Performance Verification Technical Reference located on the Product Documentation CD that ships with the product and is published on the Tektronix Web site See page vii Related Manuals Options and Accessories Configurations The lists of options and accessories for this product are found in the WFM7200 Waveform Monitor User Manual located on the Product Documentation CD that ships with the product and is published on the Tektronix Web site See page vii Related Manuals The base instrument accepts an optional module for Analog Composite inputs Option CPS Other options add audio capability Eye diagram and physical layer analysis jitter analysis capability and advanced gamut monitoring capability For a complete list of options refer to the WFM7200 Waveform Monitor User Manual WFM7200 Waveform Monitor Service Manual 1 Introduction Hardware Installation Product Upgrade Operating Information Power On Procedure Power Down Procedure The instrument is shipped in a wrap around chassis which covers the instrument bottom and two sides A cover 15 installed on the chassis and the rear panel is made up of the module rear panels You can operate the waveform m
71. ve and Exit calibration mode Check for an indication of 18 dBu in the newly adjusted audio bar If multiple inputs require adjustment repeat this procedure for each input After all adjustments are made you should perform a complete performance verification procedure WFM7200 Waveform Monitor Service Manual General Maintenance This section contains the information needed to perform periodic and corrective maintenance on the instrument The following subsections are included Preventing ESD Preventing ESD General information on preventing damage by electrostatic discharge Inspection and Cleaning Information and procedures for inspecting and cleaning the instrument Troubleshooting Information for isolating and troubleshooting failed modules Included are instructions for operating the diagnostic routines and troubleshooting trees Most of the trees make use of the internal diagnostic routines to speed fault isolation to a module Removal and Replacement Procedures Information and procedures for removing and replacing modules in the instrument Repackaging Instructions Information on returning a instrument for service Before servicing this product read the Safety Summary and Introduction at the front of the manual and the ESD information below instrument N CAUTION Static discharge can damage any semiconductor component in the When performing any service that requires internal access to
72. wer completely disconnect the power cord from the rear panel of the instrument WFM7200 Waveform Monitor Service Manual Theory of Operation The WFM7200 is a modular waveform monitor They can be configured with options to accept Analog Composite inputs Audio options can add inputs for digital only or analog audio capability models use an internal DVI I monitor for the display and have an output to drive an external monitor with the same display All models also have outputs to drive serial digital and analog picture monitors This theory of operation is mainly based on the High level Block diagram See Figure 1 When necessary other block diagrams may also be referenced The lower portion of the block diagram covers functions on the main board The upper sections cover those of the optional video input and audio boards The primary functions on the main board are B Serial digital input processing m Reference input m Waveform processing engine m Rasterizing recursion and picture processing engine B Control processor and its associated peripherals m Auxiliary and ancillary data processing m Secondary power distributions There are also miscellaneous circuits such as the thermal control system for the fan WFM7200 Waveform Monitor Service Manual 3 Theory of Operation Power Distribution is not shown in the block diagram but is covered at the end of this section Option CPS Main Audio Analog Audio Composit
73. www tektronix com downloads WFM7200 Waveform Monitor Installation Basic installation and safety information Printed manual and Safety Instructions English Japanese Simplified Chinese Product Documentation CD www tektronix com downloads 7200 Online Help In depth operation and UI help In the instrument press the HELP button on the front panel WFM7200 Waveform Monitor Service Manual vii Preface Table i Related documentation cont Item Purpose Location WFM7200 Waveform Monitor Procedure for checking performance and Product Documentation CD Specifications and Performance list of specifications www tektronix com downloads Verification WFM and WVR Series Management Programmers command reference for Product Documentation CD Information DataBase MIB controlling the waveform monitor www tektronix com downloads WFM7200 Waveform Monitor Service Manual Introduction Service Strategy Specifications The WFM7200 Waveform Monitor provides a powerful monitoring solution for broadcast production and post production environments These products are repaired to the module level at selected Tektronix service centers Repair includes functional verification of the product Component level repair by the customer is not supported The specifications for this product found in 7200 Waveform Monitor Specifications and Performance Verification Technical Reference located on the Product Doc

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