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Tektronix WVR7200 Service Manual Download Page 38

General Maintenance

Table 4: Symptoms and causes (cont.)

Symptom

Possible sources or recommended detailed troubleshooting procedure to follow

Failures while running the advanced
diagnostics:

DSP1 QDR1 Memory 1

DSP1 QDR2 Memory 2

DSP2 QDR1 Memory 1

DSP2 QDR2 Memory 2

DSY DDR Buffer 1 Memory

DSY DDR Buffer 2 Memory

DSY DDR Trig Buffer Memory

DSY SDRAM Buffer 1 Memory

DSY SDRAM Buffer 2 Memory

Perform secondary power supply checks
Replace main board

Diagnostic Log Message:

Fail AUDIO_DSP_HEARTBEAT

Search for an intermittent problem in the audio board, cables, or main board.

No text or traces on display

Replace Main board

24

WVR7200 Waveform Rasterizer Service Manual

Summary of Contents for WVR7200

Page 1: ...xx WVR7200 Waveform Rasterizer ZZZ Service Manual P077067600 077 0676 00...

Page 2: ......

Page 3: ...WVR7200 Waveform Rasterizer ZZZ Service Manual xx www tektronix com 077 0676 00...

Page 4: ...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 Tek...

Page 5: ...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...

Page 6: ......

Page 7: ...3 Main Board 5 Front Panel 6 Composite Input Option CPS 6 Audio Options AD and DPE 6 Option PHY3 7 Fan Control 10 Power Supply and Distribution 10 Adjustments 11 Required Equipment 11 Procedures 11 Ge...

Page 8: ...DPE Audio board component side 36 Figure 5 Options AD and DPE Audio board back side indicator LED and test point locations 37 Figure 6 Replaceable parts standard 43 Figure 7 Replaceable parts standar...

Page 9: ...1 External inspection check list 19 Table 2 Internal inspection check list 19 Table 3 Required test equipment 22 Table 4 Symptoms and causes 23 Table 5 Main board secondary supplies 28 Table 6 Audio b...

Page 10: ...ire 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...

Page 11: ...ditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Symbols and t...

Page 12: ...able of rendering first aid and resuscitation is present Disconnect power To avoid electric shock switch off the instrument power then disconnect the power cord from the mains power Use care when serv...

Page 13: ...art numbers Manual Conventions The following terms and conventions are used throughout this manual The terms rasterizer and instrument are is used interchangeably to refer to the WVR7200 Waveform Rast...

Page 14: ...ion Procedure for checking performance and list of specifications Product Documentation CD www tektronix com manuals WVR and WFM Series Master Information Base MIB Programmers command reference for co...

Page 15: ...n procedures for this product are found in the WVR7200 Waveform Rasterizer Specifications and Performance Verification Technical Reference located on the Product Documentation CD that ships with the p...

Page 16: ...zer 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...

Page 17: ...enced 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...

Page 18: ...Theory of Operation Power Distribution is not shown in the block diagram but is covered at the end of this section Figure 1 Main block diagram 4 WVR7200 Waveform Rasterizer Service Manual...

Page 19: ...e displays Rasterizing Engine The Rasterizer engine 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 pi...

Page 20: ...nal 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 on the upper mezzanine board There ar...

Page 21: ...ow 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 is converted from digital to analog and then sent...

Page 22: ...ed 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...

Page 23: ...Theory of Operation Figure 2 Option PHY3 block diagram WVR7200 Waveform Rasterizer Service Manual 9...

Page 24: ...3 on the Main board The fans are tested at power on If a 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...

Page 25: ...tore Off Option CPS only Composite Analog Vertical Measurement Accuracy Option CPS only Composite Analog Frequency Response Option CPS only Analog Audio Level Meter Accuracy Over Frequency Options AD...

Page 26: ...Eye CDR Null calibration as described below 1 Press the CONFIG button 2 Select Utilities Calibration and press SEL to enter the Calibration menu 3 Use the arrow buttons to navigate to the appropriate...

Page 27: ...oscope Control Setting Vert 200 mV Div Horiz 20 s Div Trigger Edge 5 Press the Config button 6 Select Utilities Calibration Press SEL to enter the calibration menu 7 Navigate to the Pixmon YPbPr Gain...

Page 28: ...h 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 wi...

Page 29: ...EL 4 Select Composite Waveform Gain and then press SEL 5 Follow the on screen instructions to adjust the gain 6 Follow the instructions at the bottom of the screen to Save and Exit Calibration mode Co...

Page 30: ...he Analog A input that requires adjustment 3 Press the CONFIG button 4 Navigate to Utilities Calibration and then press SEL 5 Push the up or down arrow key until the desired Analog Audio input channel...

Page 31: ...vicing this product read the Safety Summary and Introduction at the front of the manual and the ESD information below CAUTION Static discharge can damage any semiconductor component in the instrument...

Page 32: ...ent injury or death power off the instrument and disconnect it from line voltage before performing any procedure that follows Interior Cleaning Use a dry low velocity stream of air to clean the interi...

Page 33: ...aged or missing items frayed cables and defective modules Inspection Interior To access the inside of the instrument for inspection and cleaning you will need to remove the top cover Inspect the inter...

Page 34: ...nspection skip the remaining steps 3 If steps 1 and 2 do not remove all the dust or dirt the instrument may be spray washed using a solution of 75 isopropyl alcohol by doing steps 4 through 6 4 Gain a...

Page 35: ...first step is to recall the Factory Presets To do this press PRESET Recall Preset Recall Factory Preset To properly test this instrument you must have a known good XGA monitor and appropriate signal...

Page 36: ...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 525 270 SD signals required 100 color bars...

Page 37: ...FLASH DSP FPGA A B COMM DSP FPGA A B Program Display FPGA COMM Display FPGA Program Review messages in diagnostic log Perform primary power supply checks Perform secondary power supply checks Run Adv...

Page 38: ...R1 Memory 1 DSP2 QDR2 Memory 2 DSY DDR Buffer 1 Memory DSY DDR Buffer 2 Memory DSY DDR Trig Buffer Memory DSY SDRAM Buffer 1 Memory DSY SDRAM Buffer 2 Memory Perform secondary power supply checks Repl...

Page 39: ...ng 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...

Page 40: ...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...

Page 41: ...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 DS6 lights when the 3 3 V supply is low a...

Page 42: ...ry 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 that the green LED...

Page 43: ...nt in some operating modes Front Panel Button Troubleshooting 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 Immed...

Page 44: ...or 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 osci...

Page 45: ...board connector J26 and verify that the signals on all pins are toggling If any signals are not toggling replace the main board If they all are toggling check them again on the audio board J200 If any...

Page 46: ...J26 If the signal on pin 27 does not toggle on the main board then replace the cable otherwise replace the main board f If all of these steps pass replace the audio board 5 If the Power Up Diagnostics...

Page 47: ...t the oscilloscope probe on connector J200 pin 61 of the audio board and verify the signal is 3 Vp p and toggles low at regular intervals b If the signal on pin 61 looks OK put the oscilloscope probe...

Page 48: ...display and measurement functions If other EYE PHY functions operate correctly then a cable meter circuit problem is indicated Replace the EYE PHY board Jitter Readout and Jitter Meter Problems These...

Page 49: ...General Maintenance Figure 3 Main board indicator LED connector and test point locations WVR7200 Waveform Rasterizer Service Manual 35...

Page 50: ...General Maintenance Figure 4 Options AD and DPE Audio board component side 36 WVR7200 Waveform Rasterizer Service Manual...

Page 51: ...General Maintenance Figure 5 Options AD and DPE Audio board back side indicator LED and test point locations WVR7200 Waveform Rasterizer Service Manual 37...

Page 52: ...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 in...

Page 53: ...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 Module Servicing Module...

Page 54: ...part number Use this part number when ordering replacement parts from Tektronix 3 and 4 Serial number Column three indicates the serial number at which the part was first effective Column four indica...

Page 55: ...ONTROLLED 14 367 0530 00 2 HANDLE BOW AL 1 0 X 1 25 STAIN FINISH SAFETY CONTROLLED 15 211 0721 00 4 SCREW MACHINE 6 32 X 0 375 PNH STL CDPL T 15 TORX DR 16 213 0216 00 2 THUMBSCREW 10 32 X 0 85 0 375...

Page 56: ...SCREW MACHINE 6 32 X 0 250 PNH STL CDPL T 15 TORX DR 33 337 4469 00 1 SHIELD POWER SUPPLY TOP 0 030 POLYCARBONATE SAFETY CONTROLLED 34 407 5545 00 1 BRACKET CABLE RETAINER 35 119 7441 00 4 FAN ASSEMBL...

Page 57: ...Replaceable Parts Figure 6 Replaceable parts standard WVR7200 Waveform Rasterizer Service Manual 43...

Page 58: ...517 H X 0 13 TAIL 10 100 1000 BASE TX AND RX MAGNETICS MODULE 30 GOLD SAFETY CONTROLLED 12 131 3925 00 1 CONN DSUB PCB FEMALE RTANG 9 POS 0 112 CTR 0 318 MLG X 0 125 TAIL 4 40 THD INSERT BD RETENTION...

Page 59: ...Replaceable Parts Figure 7 Replaceable parts standard WVR7200 Waveform Rasterizer Service Manual 45...

Page 60: ...CABLE ASSEMBLY 100 TO 80 POSITION MAIN TO AUDIO PCB 9 211 0722 00 3 SCREW MACHINE 6 32 X 0 250 PNH STEEL ZINC FINISH T 15 TORX DR 10 129 1570 00 3 POST SPACER 1 385 X 0 250 X 0 375 DEEP Options EYE an...

Page 61: ...Replaceable Parts Figure 8 Replaceable parts options WVR7200 Waveform Rasterizer Service Manual 47...

Page 62: ...NA ROHS 071 2589 xx 1 MANUAL TECH A PRINTED SHEET WITH MULTILANGUAGE POINTERS TO THE TEKTRONIX WEBSITE FOR ONLINE RELEASE NOTES 011 0163 00 2 TERM COAXIAL BNC TERMINATION SINGLR ENDED 75 OHM 26DB TO 2...

Page 63: ...CREW MACHINE 4 40 X 0 312 PNH STEEL ZINC FINISH TORX T10 14 311 2607 00 1 ENCODER DIGITAL CONTACTING ENCODER 24 CPR 24 DETENTS 6 MM DIA SHAFT 17 5 MM LENGTH SHAFT 12 MM BODY SIZE TOP MOUNT RE0123 15 3...

Page 64: ...SSY PWR 3 1 0 MM SQ 250V 10A 2 5 METER STR IEC320 RCPT X 13A FUSED UK PLUG 13A FUSE UNITED KINGDOM SAFETY CONTROLLED 161 0066 13 Option A3 Australia CABLE ASSY PWR 3 1 0 MM SQ 250V 10A 2 5 METER STR I...

Page 65: ...Replaceable Parts Figure 9 Replaceable parts WVR8RFP Remote Front Panel WVR7200 Waveform Rasterizer Service Manual 51...

Page 66: ...akout Cable 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...

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