WFM5200 Waveform Monitor Service Manual
Contents
1. oae reddes rre 1 Options ACCeSSOFIGS escon eene rede pede eg ettet e id ddan eau qsqa 1 REES 1 Hardware Installation re ae a EEE ENE VERE EO ERR REN 2 Product Upsrade c MT m 2 Operating Information u e 2 Theory of Operation E E bue Pu OH ER ESTE bau de edu 3 CPU Board iiec tom itor RE PR EEEE be deg Seana ROUES SABER duane AOI eon EEE RR 5 Front Panel Rm 6 Audio Option AUD sc Ce ieee tes 6 hrukeviii m 7 Power Supply and 2 2 7 General Maintenance ue aaa asnasqa odd Pres 9 Preventing ESD oett ene edo Un doahindad 9 Inspection and 2 Ea 10 serm 13 Started 13 Detailed Troubleshooting Procedures 2 2 2 16 Removal and Replacement Procedures 2 se e ees eene 23 Preparation 23 Module Removal a e E ER2. An Interworld Highway LLC Company WFM5200 Waveform Monitor Service Manual Tektronix 077 0550 00 S WFM5200 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 0550 00 Tektronix 7 Copyright Tektronix All rights reserved Licensed software products are owned by Tektronix or its subsidiaries or suppliers and are protected by national copyright laws and international treaty provisions Tektronix products are covered by U S and foreign patents issued and pending Information in this publication 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 In 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 o
3. 25 Repackagme Instructions atau sent tien i oL MEE ERR A Que See Ie ER den 32 PaCK agin m 32 Shipping to the Service 2 32 Replaceable Parts cete ee edo 33 Parts Ordering Information oci ere RR e REN IRA RUNE ER E er UR S E Vas 33 Using the Replaceable Parts 1518 2 2 2 34 WFM5200 Waveform Monitor Service Manual 1 Table of Contents List of Figures ii Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Instrument block 22 ite 2 2 ee messes 4 sje LET 18 Screws that attach fan bracket to main chassis 2 0 0 0 2 27 Fan screw placement iis ere ore 28 CPU board screw and spacer 011 0 0 29 Correct spring clip position u uu sasa ten Cid 30 Screws that attach LCD module to main 2 2 31 5200 Exploded View 2 2 37 WFM5200 Waveform Monitor Service Manual Table of Contents List of Tables Table i Related vii Table 1 External inspection checklist 0 0 00 cece cece cece cence eee
4. Instrument block diagram 4 WFM5200 Waveform Monitor Service Manual Theory of Operation CPU Board Serial Digital Input The serial digital circuitry receives the SDI input streams from the SDI board after Processing they have been equalized The SDI input 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 The reference signal is applied to a sync separator whose output is supplied to the DSP FPGA where the timing information is derived The reference signal is also digitized for display as a waveform Digital Waveform The data streams from the SDI video inputs are applied to the waveform Processing Engine processing FPGA This block deformats up samples interpolates and otherwise processes the data to generate the signals needed to create the displays Rasterizing Engine 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 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 that
5. 12 863 6501 01 1 CIRCUIT BOARD SUBASSY FPGA TESTED 389440900 13 174 5921 00 1 CABLE FPGA TO REF IO 40 PIN 14 214 4748 00 2 HEAT SINK SEMIC IC PGA 11X11 MQUAD 27MM BGA 1 1 X 1 1 X 0 25 H PIN FIN AL BLACK ANODIZE 658 25AB 15 211 1117 00 13 SCREW MACHINE 4 40 X 0 187 PAN HEAD STEEL ZINC FINISH T 10 TORX DR 16 129 1713 00 6 SPACER POST 276 L 4 40 M F 188 HEX 17 863 6503 01 1 CIRCUIT BOARD SUBASSY SDI TESTED 389441100 18 211 0380 00 2 SCREW MACHINE 4 40 X 0 375 FLH STEEL ZINC FINISH T8 19 863 6502 01 1 CIRCUIT BOARD SUBASSY CPU TESTED 389441000 20 260 5015 00 1 SWITCH PUSH SPST TACT 50MA 50V MOMENTARY SILVER CONTACTS Reset button on bottom of CPU board 21 146 0109 00 1 BATTERY DRY 3 0V LITHIUM MANGANESE DIOXIDE 210MAH 20 X 3 22MM CELL WITH SOLDER TABS CR2032 1HF 1 SAFETY CONTROLLED 22 214 5305 00 1 SPRING GROUND CLIP FRONT PHONE JACK USB 23 348 2003 00 1 BUMPER RUBBER CLEAR 0 375 DIA X 0 200 H 24 441 2644 00 1 CHASSIS MAIN WFM 25 119 7439 01 1 DISPLAY MODULE LCD COLOR 1024X768 XGA 6 5 DIAG TFT 8 6 BIT LVDS 500 NIT BACK LIGHT 0 13 MM PIXEL PITCH 21MS SIDE MOUNT NL10276BC13 26 214 5152 00 1 SPRING CLIP 27 174 5920 00 1 CABLE ASSEMBLY DISPLAY 20 PIN 28 174 5485 00 1 CABLE ASSEMBLY DISPLAY INVERTER 15 PIN LED BACKLIGHT TO DISPLAY 29 337 44 19 00 1 PORON FOAM SHIELD 30 863 0209 00 1 CIRCUIT BD SUBASSY 389410200 FP WFM5000 WFM4000 ROHS COMPLIA 31 129 1636 00 2 SPACER POST
6. O O Z 4 2 89 3 SDI OUT O O 106 SDI1B SDI2A 50128 gt ETHERNET LH TH E SA 0572 003 3 Remove the nine flat head 32 X 0 250 T10 screws on the front edge of the top cover three on the top and two on each side and the bottom When reinstalling tighten these to 0 9 N M 8 in Ib 4 Slide the top cover up off the Waveform Monitor When reinstalling make sure to push the cable on the left side into the chassis as you slide the top cover onto the Waveform Monitor The rear panel is a one piece design with two short sides which slide into the main chassis Follow these steps to remove the rear panel 1 Remove the two pan head 3 2 X 0 250 T15 screws that attach the rear panel to the fan bracket When reinstalling tighten these to 0 9 N M 8 in Ib 2 Remove the 9 6 nuts and their lock washers from the seven BNC connectors When reinstalling tighten the nuts to 1 58 N M 14 in Ib 3 Remove the two 3 16 jack screws from the DVI connector When reinstalling tighten these to 0 45 N M 4 in Ib WFMS5200 Waveform Monitor Service Manual 25 Removal and Replacement Procedures Fan bracket Main Chassis 26 4 Remove the two 40 X 0 375 T8 flat head screws that secure the XLR connector to the rear panel When reinstalling tighten these to 0 62 N M 5 5 in lb Remove the four 32 X 0 250 T10 flat h
7. T15 TORX tip Used for removing instrument 640 247 screws Torx driver bit for T15 size screw heads 5 1 8 inch flat bladed Screwdriver for unlocking cable Standard tool screwdriver connectors 6 Angle Tip Tweezers Used to remove front panel knobs Standard tool 7 34s inch nut driver Used to remove jack screws and Standard tool front panel spacer posts 8 5 46 inch nut driver Used to remove nut on AC ground Standard tool lug 9 MA 800G Soldering Aid Used to remove the front panel trim Standard tool spudger 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 WFM5200 Waveform Monitor Service Manual Module Removal Top cover Rear panel Reference I O Board Removal and Replacement Procedures The removal of most of the modules is a straightforward process and can be determined by a quick study of the exploded diagram in the Replaceable Parts List See Figure 8 The boards need to be removed in the order listed here The top cover is a complete enclosure design Follow these steps to remove the top cover 1 Place the instrument face down on a surface that will not mar the front panel A thin piece of anti static foam works nicely 2 Remove the three pan head 32 X 0 250 T15 screws from the back of the instrument When reinstalling tighten these to 0 9 N M 8 in Ib m 1 A RA O 8
8. a Phillips screwdriver to remove the two 40 X 0 187 P1 screws that secure the bottom of the bezel to the main chassis When reassembling tighten these screws to 0 62 N M 5 5 in Ibs Pull the bezel forward Slide the cable out of the slot on the main chassis When reassembling pull the cable that connects to the front panel through the slot on the main chassis first then reattach screws Remove the front panel board from the bezel The front panel board can be removed from the bezel and replaced if needed 1 2 3 Disconnect the front panel cable from J1 on the front panel board Remove the three knobs on the front panel Remove the one pan head 40 X 0 187 T 10 screw that secures the front panel to the bezel and one spring clip When reassembling be sure to position the spring clip so that it angles above R42 See Figure 6 Use a 3 6 inch nutdriver to remove the two 0 6871 0 188 hex spacer posts that secure the front panel board to the bezel Lift the front panel board away from the bezel Remove the elastomer mat from the bezel Correct spring clip position 0550 007 Figure 6 Correct spring clip position WFM5200 Waveform Monitor Service Manual Removal and Replacement Procedures LCD Module 1 Remove the 6 pan head 40 X 0 187 T 10 screws that attach the LCD module to the main chassis Push aside the Poron foam gasket to reach the screws See Figure 7 2 Carefully lift up the LCD module pulling the
9. boards It requires successful boot up display and front panel operation 1 Press and hold OTHER then select Diag Monitor to display the diagnostic monitor screen Navigate to pages 2 and 3 to display the power supply voltages If the Last value of any voltage is outside the allowable range it will be displayed in red Voltage values are updated about every 10 seconds If any voltage is out of range replace the faulty module as indicated by the first word of the displayed line Input indicates the power supply is on the SDI board Perform this test 1f 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 If the 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 WFM5S5200 Waveform Monitor Service Manual 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 dama
10. boards to gain access to the SDI board test points Connect power and measure the voltage at power connector J7 pin 4 with respect to chassis ground The external power supply voltage 10 to 19 Vdc should be present at this pin If no LEDs are lit on the front panel or CPU board press the front panel power button to check that the initial problem is still present If there is still no indication of power up press button S1 on the SDI board If S1 also has no effect replace the SDI board WFM5200 Waveform Monitor Service Manual Troubleshooting If S1 causes normal power up indicated by lit red and green LEDs on the CPU board then the problem is in the connection from the front panel button to the SDI board Disconnect power disassemble as necessary and check for continuity or low resistance of the following links Button resistance On the front panel board resistance from J1 pin 2 to ground should be less than 1000 ohms when the power button is pressed greater than 20k ohms when released Front panel cable continuity Resistance from Front Panel board J1 pin 2 to CPU board J1 pin 2 should be less than 10 ohms m CPU board continuity Resistance from J1 pin 2 to J2 pin 211 should be less than 10 ohms SDI board continuity Resistance from J2 pin 211 to switch S1 pins nearest the edge of the board should be less than 10 ohms Replace any cable or board that fails the resistance checks Basic Power Supply This section
11. carry case or rack mount cabinet For instructions about installation into a rack mount or cabinet refer to WFM5200 Waveform Monitors System Integration Technical Reference or the rack adapter instructions included with your Tektronix rack mount kit Software upgrades are available for all products as free software downloads from the Tektronix Web site The WFM5200 Waveform Monitor User Manual includes instructions for updating product software If you would like to purchase additional features and capabilities for your instrument contact Tektronix for more information on purchasable options For a complete list of options refer to the WFM5200 Waveform Monitor User Manual For operating instructions refer to the WFM5200 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 the external AC adapter and connect its XLR output connector to the instrument 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 m Press the power button on the instrument front panel to turn the instrument off 2 Toremove power completely disconnect the power cord from the AC adapter NOTE The power button on
12. describes methods for verifying the proper operation of the basic Checks power supplies on the SDI board This procedure requires partial disassembly and should only be performed if the unit fails to produce evidence of CPU boot up WARNING Internal power supplies are all low voltage so no safety shield is present This instrument requires an external DC power source capable of providing 11 to 17 Vdc at 3A The provided AC adapter accepts 90 to 264 VAC and outputs around 12 VDC with 4 A capability This voltage passes through a power switch circuit on the SDI board and is present at the 12V test point if instrument power is on The switched 12V powers 5V and 3 3V switching power supplies also located on the SDI board These three voltages are the basic power supplies distributed to the rest of the instrument Remove the Reference I O and FPGA boards to gain access to the SDI board power test points Locate the 12V 5V and 3 3V test points on the SDI board See Figure 2 Measure the voltages with a DVM and check against the allowable ranges See Table 5 If the voltages are outside of the allowed range replace the SDI board If voltages are within the allowed range replace the CPU board Table 5 SDI board basic supplies Nominal V Allowed range V 12V 11 to 17 5V 4 85 to 5 15 3 3V 3 2 to 34 WFMS5200 Waveform Monitor Service Manual 17 Troubleshooting DS4 5V fault DS3 5VCC fault D
13. ene eme eee 11 Table 2 Internal inspection 186 0 8 11 Table 3 Required test 22 2 14 Table 4 Symptoms and causes 2 se eese e esee 15 Table 5 SDI board basic supplies oerte pret ee ORIS E V Rep 17 Table 6 Tools required for module removal 2 0 e emen 24 Table 7 Replaceable parts anes dia NE tag use TERES 35 WFM5200 Waveform Monitor Service Manual lii General Safety Summary General Safety Summary To Avoid Fire or Personal iv Injury 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 ma
14. out through the slots Remove the two pan head 40 X 1 500 T10 screws from the front of each fan When reassembling place the fans so that the labels are facing the fan bracket Insert the screws in the holes noted in the figure below 0550 005 Figure 4 Fan screw placement 28 WFM5200 Waveform Monitor Service Manual Removal and Replacement Procedures gt CPU board Using 3 16 nut driver remove the three 276 L spacer posts that secure the CPU board to the chassis When reinstalling tighten these to 0 62 N M 5 5 in Ib 2 Remove the one pan head 40 X 0 187 T10 screw that secures the CPU board to the main chassis When reinstalling put the screw in the lower left hand corner of the board Tighten this screw to 0 62 N M 5 5 in Ib See Figure 5 3 Disconnect the front panel cable from J1 on the CPU board Then disconnect the backlight cable from J5 on the CPU board Pull these plugs straight away from their connectors to prevent damage 4 Move the CPU board away from the main chassis and place it on the static free work surface Spacer posts 3 Pan head T 10 screws Figure 5 CPU board screw and spacer posts WFMS5200 Waveform Monitor Service Manual 29 Removal and Replacement Procedures Front Panel Bezel Disassembly 30 1 Remove the two flat head 40 X 0 25 T10 screws that attach the main chassis to the LCD module When reassembling tighten these screws to 0 45 N M 4 0 in Ib Use
15. 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 Terms onthe These terms may appear on the product Product m 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 CAUTION indicates a hazard to property including the product The following symbol s may appear on the product A O CAUTION Refer to Manual Standby WFM5200 Waveform Monitor Service Manual 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 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 Servicing With Power On Dangerous voltages or currents may exist in this product Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed con
16. should be performed only if some front panel buttons light but neither the external nor internal display are functional WFMS5200 Waveform Monitor Service Manual 19 Troubleshooting 20 LCD Troubleshooting Fan Checks Observe the sequence of front panel button illumination at power on Normal power up sequence has the following appearance Time is in seconds T 0 press power button to power up GAIN SWEEP MAG buttons light Initial button lighting sequence starts with lt gt V buttons on for about second each T 3 All buttons flash for fraction of a second then all go out out The button sequence changes to 1A 1B counterclockwise around the display T 10 to 20 Power button may turn red T 20 Button sequence stops T 28 Brief changes then all buttons dim per backlight setting T 32 Previous power down state is restored to buttons Usually two or three become bright If the power up behavior is similar to that described then the CPU is booting correctly and the display fault is likely to be on the FPGA board Replace the FPGA board If the power up behavior differs from that described above then perform the Basic Power Supply Fault Checks to further isolate the faulty module Perform this test if there is no display on the internal LCD but an external monitor connected to the DVI output displays the usual instrument display starting with Power up Diagnostics 1 Check the cable from th
17. the front panel does not disconnect mains power Only the power cord at the AC adapter can disconnect mains power WFM5200 Waveform Monitor Service Manual Theory of Operation The 5200 is a modular waveform monitor Each instrument includes extensive standard capabilities which can be augmented by adding various options This instrument uses an internal DVI I monitor for the display and has an output to drive an external monitor with the same display It also has outputs to drive a serial digital picture monitor This theory of operation is based on the High level Block diagram See Figure 1 The block diagram reflects the physical arrangement of circuit boards with the CPU board at the bottom the SDI board in the center and the FPGA board at the top Connectors to the External Reference and front panel boards are shown The primary functions on the CPU board are Control processor kernel m front panel interface Display backlight m Fan controller m Headphones output and control m USB and network connections m Various secondary power supplies The primary functions on the SDI board are SDI Input signal conditioning m Input power conditioning and control The primary functions on the FPGA board are Serial digital input processing m Waveform and picture processing for display m DVI output m Reference input data processing m SDI output generation WFM5200 Waveform Monitor Service Manual 3 Theo
18. 4 40M F 0 687L SST 0 188HEX 32 174 5492 00 1 CABLE ASSEMBLY 10 PIN FP TO MAIN ROHS TO ROHS 33 260 2922 00 1 SWITCH KEYPAD ELASTOMER MAT 34 426 2631 01 1 FRAME FRONT BEZEL PC ABS TV GRAY SAFETY CONTROLLED WFMS5200 Waveform Monitor Service Manual 35 Replaceable Parts Table 7 Replaceable parts list cont Fig amp Serial Serial index Tektronix part no no number number effective discont d Qty Name amp description 35 335 2515 00 1 FRONT LEXAN WFM 5200 36 335 2516 00 1 MARKER IDENTIFICATION ID LABEL WFM5200 37 366 0859 01 3 ASSEMBLY KNOB 470 DIAMETER SOFT TOUCH 38 211 0119 00 2 SCREW MACHINE 4 40 X 0 25 FLH 100 DEG STEEL BLACK ZINC POZ 39 337 4488 00 1 SHIELD GLASS DISPLAY FRONT FOR 6 5 IN DOUBLE SIDED AR TREATMENT WFM 40 407 5443 00 1 BRACKET CRADLE 36 WFM5S5200 Waveform Monitor Service Manual Replaceable Parts USA Figure 8 WFM5200 Exploded View E Equipm u pi m An Interworld Highway LLC WFM5200 Waveform Monitor Service Manual 37
19. LCD and backlight cables up through the slots on the main chassis 3 The LCD module should not be further disassembled The entire module including the LCD board and cables can be replaced by ordering part number 119 7439 01 0550 006 Figure 7 Screws that attach LCD module to main chassis WFMS5200 Waveform Monitor Service Manual 31 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 is unavailable or unfit for use contact your local Tektronix representative to obtain new packaging 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 B The owner s address m Name and phone number of a contact person m Type 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 sh
20. S2 switch fault 095 3 3V fault 1 Power On 88 T BE zm pon En dE dp i SED Boc i Bs aw ED n PaO HANI 8 i Bi i om soe pr i aav L CPU 2 5V lo i 0550 009 Figure 2 SDI board 18 WFM5200 Waveform Monitor Service Manual Troubleshooting Basic Power Supply Fault This procedure requires disassembly It should be performed only if the unit fails Checks to operate to the point where diagnostics be run and if the power button is continuously lit red The power button is normally red for about 2 seconds when the unit is first powered up In addition the power button may be red in the case of any detected hardware fault To isolate the symptom to a power supply fault it is necessary to view the fault LEDs on the SDI board Remove the carrying case if present to gain viewing access to the SDI board fault LEDs DS2 DS3 DS4 and DSS located on the right edge of the SDI board These are visible through the lower right side ventilation holes Connect power and press and hold the power button If none of the four fault LEDs is red then exit this procedure LEDs DS1 and DS3 indicate faults on the SDI board If any one of them is red replace the SDI board If either DS4 or 055 is lit then isolate the faulty assembly by removing them one at a time in the order listed
21. aged 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 any circuit board is repaired or replaced see if it is necessary to adjust the instrument See Table 2 on page 11 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 WFM5200 Waveform Monitor Service Manual 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 termin
22. als 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 Straighten repair or replace damaged hardware defective hardware Cleaning Procedure Interior To clean the instrument interior perform the following steps 1 2 Lub Blow off dust with dry low pressure deionized air approximately 9 psi 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 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 WFM5200 Waveform Monitor Service Manual Troubleshooting Getting Started A Troubleshooting The procedures in
23. and Replacement Procedures Information and procedures for removing and replacing modules in the instrument Repackaging Instructions Information on returning an instrument for service Before servicing 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 When performing any service that requires internal access to 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 WFM5200 Waveform Monitor Service Manual 9 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 Inspe
24. are hit more frequently are brighter For any given frame the intensity map is 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 rasterizing engine feeds the picture and recursive processing Processing Engine engine in the 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 various input frames rates to a 60 Hz frame rate in order to work with the DVI I monitor The picture and waveform data are then combined with the graphics and audio bar information from the control processor The result is presented on the LCD display and sent through the DVI connector to the external monitor CPU Board Control The control processor is in charge of all the operational modes in the instrument Processor It communicates with the FPGAs on the FPGA board through a parallel peripheral bus and communicates with the front panel and controls most other internal devices though either the SPI or the DC 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 WFM5200 Waveform Monitor Service Manual 5 Theory of Operation LTC Front Panel Audio Option AUD Audio Processing LTC inputs come from the remote connector The LTC signal is applied to an A D converter and t
25. below Disconnect the power before removing each assembly and then reconnect power and press the power button to test The first board or cable to be removed which causes an SDI board fault LED to stop lighting is probably faulty and should be replaced 1 Reference I O cable at FPGA board J4 2 LCD cable at FPGA board J7 3 FPGA board 4 Display backlight cable at CPU board J5 remove SDI board to gain access then reinstall SDI board For the next two steps test by pressing SDI board switch S1 instead of the disconnected front panel power button 5 Front panel cable at CPU board J1 remove SDI board to gain access then reinstall SDI board 6 CPU board remove SDI board from CPU and test SDI board in isolation If any SDI board fault LED DS1 through 055 is red when the board is tested in isolation replace the SDI board CPU Boot Checks The objective of this test is to determine whether CPU FP SDI is booting correctly in which case the missing external display is an FPGA board fault If CPU FP SDI is not booting to completion the Basic Power Supply Fault Checks decide whether the SDI or CPU FP is at fault The primary indicator is the front panel behavior which is presumed good based on single fault assumption Since a good unit boots completely with the front panel disconnected an initial and final test are done to the front panel to guarantee that the front panel is not hanging boot This procedure requires disassembly and
26. 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 34 Abbreviations conform to American National Standard ANSI Y1 1 1972 WFM5S5200 Waveform Monitor Service Manual Table 7 Replaceable parts list Replaceable Parts Fig amp Serial Serial index Tektronix part no no number number effective discont d Qty Name amp description 5 1 WFM5200 Exploded View 1 119 7441 00 2 FAN ASSEMBLY DC 12V 0 105A 8 6 CFM 30DBA 3 LEAD TACH OUTPUT WITH CONN amp HOUSING SAFETY CONTROLLED 2 211 1161 00 4 SCREW MACHINE 4 40 X 1 500 PAN HEAD T 10 TORX ZINC PLATED STEEL 3 407 5571 00 1 BRACKET FAN MOUNT 4 211 0722 01 7 SCREW MACHINE 6 32 X 0 250 PNH STL CDPL T 15 TORX DR 5 200 5189 00 1 COVER INTERNAL EMI 6 211 0734 00 13 SCREW MACHINE 6 32 X 0 250 FLH100 STEEL ZINC FINISH T 10 TORX DR 7 333 4651 00 1 REAR PANEL REAR 1 0 8 210 1039 00 7 WASHER LOCK 0 521 ID INT 0 025 THK STEEL ZINC FINISH 9 220 0497 00 7 NUT PLAIN HEX 0 5 28 X 0 562 HEX BRS NI NICKEL PLATED 10 878 6504 00 1 CIRCUIT BOARD SUBASSY REF IO UNTESTED 389441200 ROHS COMPLIANT 11 214 3903 00 4 VENDOR LYNTRON SCREW JACK 4 40 X 0 312 LONG 0 188 H HEX HEAD STAND OFF 4 40 INT THD X 0 312 THD EXT 4 40 STEEL ZINC PLATED
27. ction and Cleaning General Care Interior Cleaning Exterior Cleaning A 10 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 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 To 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 co
28. d Faults referring to FPGA functions Fan faults Replace FPGA board Perform Fan Checks Advanced Diagnostics failures Replace FPGA board Functional or Performance Verification Test Failures Use the table below to isolate the faulty module based on problem area Perform Power Up Diagnostics Perform Advanced Diagnostics Perform Diagnostic Monitor Voltage Checks SDI in one channel bad SDI in all four channels bad Replace SDI board Replace FPGA board Waveform or graphic displays Replace FPGA board corrupted SDI OUT Replace FPGA board Audio bars bad Replace FPGA board USB bad Replace CPU board Ethernet bad Replace CPU board Fans bad Perform Fan checks Headphones bad audio bars ok Replace CPU board WFMS5200 Waveform Monitor Service Manual 15 Troubleshooting Table 4 Symptoms and causes cont Symptom Possible cause or detailed troubleshooting procedure to follow Reference or LTC waveform bad Check Reference cable Replace Reference I O board Ground closure input or Alarm output bad Check Reference cable Replace Reference I O 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 messa
29. d Pull the plug straight away from the connector to prevent damage 4 Place the FPGA board on a static free work surface WFMS5200 Waveform Monitor Service Manual 27 Removal and Replacement Procedures SDI board 1 Fan Bracket Disassembly 1 Remove the three 3 16 inch spacer posts that secure the SDI board When reassembling tighten these to 6 2 N M 5 5 in Ib When reinstalling the SDI board flex the board slightly to ensure that none of the cables are pinched between the board and the main chassis Lift the SDI board straight up to disconnect the inter board connector on the bottom of the SDI board from the CPU board When reinstalling make sure that these connectors are aligned correctly before pushing the SDI board down onto the CPU board Place the SDI board on a static free work surface Disconnect the fan cables from J7 and J8 on the CPU board These connectors are locked in place push the release tab in the middle to unlatch them When reinstalling attach the fan cables before seating the CPU board on the main chassis make sure to push the fan cable plugs into the connectors until they snap into place Then seat the CPU board into the main chassis and drape the fan bracket and cables over the right side of the front panel to keep them out of the way You ll need to reinstall the SDI and FPGA boards before reinstalling the fan bracket Separate the fan bracket from the main chassis by pulling the cables
30. duct found in the WFM5200 Waveform Monitor Specifications and Performance Verification Technical Reference located on the Product Documentation CD which ships with the product and is published on the Tektronix Web site See page vii Related Manuals Performance Verification The Performance Verification procedures for this product are found in the WFM5200 Waveform Monitor Specifications and Performance Verification Technical Reference located on the Product Documentation CD which ships with the product and is published on the Tektronix Web site See page vii Related Manuals Options and Accessories Configurations WFM5200 Waveform Monitor Service Manual The lists of options and accessories for this product are found in the WFM5200 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 has no hardware upgrade options Software options are available to add capabilities such as audio and advanced gamut monitoring For a complete list of options refer to the WFM5200 Waveform Monitor User Manual Introduction Hardware Installation Product Upgrade Operating Information Power On Procedure Power Off Procedure The waveform monitor is shipped in a one piece unpainted bathtub shaped EMI shell It can be used as is or installed into a hard carry case soft carry case requires hard
31. e internal display to J7 on the FPGA board This carries the XGA data to the display 2 Check to see if the backlight is on Look into the vent holes behind the upper right corner of the LCD You should see the backlight come on about 20 seconds after power up 3 Ifthe backlight is on replace the front panel assembly 4 Ifthe backlight is not on check the backlight power cable from the LCD assembly to the CPU board J5 Also check connector J18 itself for any solder issues 5 Ifthe backlight is still bad replace the front panel assembly although there is still a small chance the problem is in the main board 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 WFM5200 Waveform Monitor Service Manual Troubleshooting If a fan fails its corresponding LED lights up on the CPU board m Fan 1 fails LED DS3 lights m Fan 2 fails LED DS2 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
32. e stall and turns on a red LED DS2 or DS3 on the CPU 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 External power may be supplied by either the provided power module or a customer supplied 11 17 V DC power source Protection circuits include a self resetting fuse transient filtering and limiting over and under voltage protection and current limiting A latching relay controls standby mode The nominal 12 V DC input powers 5 V and 3 3 V supplies All three voltages are distributed to the CPU and FPGA boards to power circuits as well as lower voltage local regulators WFMS5200 Waveform Monitor Service Manual 7 Theory of Operation 8 WFM5200 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
33. ead screws that attach the rear panel to the sides of the main chassis two on each side When reinstalling tighten these to 0 9 N M 8 in Ib Pull the sides of the main chassis out slightly to disengage the alignment tabs from the slots in the rear panel Then move the rear panel with the Reference I O board still attached slightly away from the main chassis When reassembling slightly push out the sides of the main chassis until the alignment tabs engage the slots in the rear panel Disconnect the cable that connects the Reference I O board at J7 with the FPGA board Then set the rear panel with Reference I O board attached on the static free work surface CAUTION Use care when removing the cable attached to J7 on the Reference I O board If you let the connector tip to the side while disconnecting the cable you may bend some of the pins on the board Pull the connector straight away from the board when removing the cable to avoid bending pins Reference I O board rear panel This procedure is only necessary if you are replacing the Reference I O board 1 On the rear panel remove the two 3 16 jack screws that attach the Ground Closure Interface connector to the Reference I O board When reinstalling tighten these to 0 45 N M 4 in Ib Separate the Reference I O board from the rear panel Place the I O board on the static free work surface Remove the two pan head 32 X 0 250 T15 screws that attach the fan bracket
34. ge 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 List 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 6 on page 24 Read the cleaning procedure before disassembling the instrument for cleaning WFMS5200 Waveform Monitor Service Manual 23 Removal and Replacement Procedures 24 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 required to remove and reinstall the modules is listed in the following table Table 6 Tools required for module removal Item General Tool no Name Description number 1 Screwdriver handle Accepts TORX driver bits 620 440 2 T8 TORX tip Used to remove screws securing Standard tool XLR power connector to rear panel 3 T10 TORX tip Used for removing most instrument 640 235 screws Torx driver bit for T10 size screw heads 4
35. ges for an error that may not be currently happening 2 Check the power supplies by performing the Diagnostic Monitor Voltage Checks A marginal supply can lead to intermittent operation if it is near the acceptable threshold This includes the external power source 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 Detailed Troubleshooting Procedures General Checks Power Switch Checks The following tests should be run as indicated in the Symptom and Causes table See Table 4 on page 15 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 external power is connected stable and between 10 and 19 Vdc 2 Check that all internal cables are correctly connected and seated 3 Check for any discolored or burned components This procedure requires partial disassembly and should only be performed if the unit fails to show any indication of operation This procedure may also be used to troubleshoot a unit that cannot be powered off from the front panel power button Remove the Reference I O and FPGA
36. hen input to the waveform processing FPGA which decodes the time code information NOTE The FPGAs decode VITC signals digitally 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 The audio software option enables display of the levels and phase of embedded audio and drives the headphones output The display FPGA extracts embedded audio data from the selected SDI data stream and sends it to the headphones output D A converter on the CPU board The FPGA also calculates 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 read by 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 WFM5200 Waveform Monitor Service Manual Theory of Operation Fan Control There are multiple temperature sensors in different locations in the instrument 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 th
37. ion 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 WFMS5200 Waveform Monitor Service Manual 33 Replaceable Parts Using the Replaceable Parts Lists Parts list column descriptions This section contains lists of the mechanical and or electrical components that are replaceable 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 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
38. ipping carton in two prominent locations 32 WFM5200 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 available 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 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 informat
39. king connections to the input or output terminals of the product ensure that 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 Use proper AC adapter Use only the AC adapter specified for this product 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 WFM5200 Waveform Monitor Service Manual General Safety Summary Terms in This Manual These terms may appear in this manual WARNING Warning statements identify conditions or
40. manuals Item Purpose Location WFM5200 Waveform Monitor User Operation instructions and explanation Product Documentation CD Manual of features www tektronix com manuals WFM5200 Waveform Monitor Installation Basic installation and safety information Printed manual and Safety Instructions English Japanese Simplified Chinese Product Documentation CD www tektronix com manuals WFM5200 Online Help In depth operation and UI help In the instrument press the HELP button on the front panel WFM5200 Waveform Monitor Service Manual vii Preface Table i Related documentation cont Item Purpose Location WFM5200 Waveform Monitor Procedure for checking performance and Product Documentation CD Specifications and Performance list of specifications www tektronix com manuals Verification WFM and WVR Series Management Programmers command reference for Product Documentation CD Information Database MIB controlling the waveform monitor www tektronix com manuals viii WFM5200 Waveform Monitor Service Manual Introduction Service Strategy Specifications WFM5200 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 pro
41. nections WFM5S5200 Waveform Monitor Service Manual Preface Manual Conventions Related Manuals Table i Related documentation This manual supports servicing to the module level of the WFM5200 Waveform Monitor which processes video signals for display on an internal XGA LCD The instrument is used as a monitor in broadcasting production and post production environments This manual explains how to troubleshoot and service the instrument to the module level The manual is 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 modules of the instrument m Adjustment Procedures details the adjustments that to perform if the instrument is out of specification 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 B The term instrument is used interchangeably with the more formal term WFM5200 Waveform Monitor This manual assumes you have access to the following manuals when servicing this product These manuals are available on the Product Documentation CD that shipped with the product and can also be downloaded from www tektronix com
42. nnectors 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 75 isopropyl alcohol solution as a cleaner and rinse with deionized water Before using any other type of cleaner consult your Tektronix Service Center or representative WFM5200 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 dam
43. o options 525 270 SD signals required m 100 color bars m 10 bit shallow ramp m SDI Matrix Pathological Signal m 100 sweep Tektronix TG700 with DVG7 module Embedded audio needed for audio options XGA Monitor Computer monitor capable of 1024 x 768 x 60 Hz scan rate Voltmeter Fluke 87 or equivalent Oscilloscope Video trigger capability Tektronix TDS3000C Series Tektronix DPO70404 14 5200 Waveform Monitor Service Manual Table 4 Symptoms and causes Symptom Troubleshooting Possible cause or detailed troubleshooting procedure to follow No LEDs lit and no internal or external display Perform General Checks Perform Power Switch Checks Perform Basic Power Supply checks Some LEDs lit but no external display and no internal display Perform General Checks Verify external monitor functionality with another XVGA source Perform Basic Power Supply Fault Checks Perform CPU Boot Checks Internal display functions normally but external display does not function normally Verify external monitor functionality with another XVGA source Replace FPGA board External display functions normally but internal does not Perform LCD Troubleshooting The display functions normally but the front panel buttons are all dark or inoperative Power Up Diagnostic failures Check front panel cable Replace front panel assembly Faults referring to Main or CPU board Replace CPU boar
44. or malfunction caused by the use of non 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 ___ E iv Service Safety Summary vi luce c vii rere bison E rede IDEE I aue de Lease I Pes Fere EU bees vii Related Man alS EEUU vii Introduction yaspa kakusaq 1 Service Strate Sy 1 deena qaw qani 1 Performance Verification u
45. pending on internal temperature If a fan is not spinning measure the voltage on pin of the connector on that fan If the voltage is near 13 V then replace the fan If the voltage is not above 10 V then replace the CPU board If both fans are spinning but either LED DS2 or DS3 is lit the problem is probably the tachometer feedback line on pin 3 of either fan Inspect the wiring and resistors R201 R203 R202 and R204 on the CPU board and use the oscilloscope to look for a 3 3 V square wave on the tachometer feedback line If resistors are intact but there is no signal on the tachometer line replace the affected fan Power Up Diagnostics examine the Power up Diagnostics results press the CONFIG button then select Utilities gt View Diagnostic Log Each power on is indicated by a boot time stamp followed by a list of power on tests If any failures are indicted then refer to the action as noted above WFMS5200 Waveform Monitor Service Manual 21 Troubleshooting Advanced Diagnostics Diagnostic Monitor Voltage 22 Checks Front Panel Button Troubleshooting To run the Advanced Diagnostics press the CONFIG button then select Utilities gt Run Advanced Diags Advanced Diagnostics includes tests that check the interfaces between FPGAs and memory on the FPGA board If any of these tests fails replace the FPGA board This test uses the built in voltage monitor to check many power supplies on the SDI FPGA and CPU
46. ption either will repair the defective 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 All 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 is 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
47. ry of Operation Power Distribution is not shown in the block diagram but is covered at the end of this section REF 0 BOARD External Reference L SYNC Loop Through SEP MUX lt q Ground Closure 20088 Interface incl LTC RESETS GCI OUT FUTURES SD HD 3G OUT DISPLAY Audio VCXO Clocks DISPLAY DATA HEADPHONE D JTAG J3 CPUBUS FPGA DVI I OUT FPGA BOARD UT QDR2 KIN ss Bd Bd IO J3 4 SD HD 3G IN 1A SD HD 3G IN 1B J5 5 5 SD HD 3G IN 2A E J6 SD HD 3G IN 2B 12VDC IN Z 10V 17V Q dii mense J2 J1 Front Debug amp Front panel JTAG CPU PLD Bd Bd buffers intf board f System resel Backlight driver Back Light NVRAM RT CPU BUS K CPUBUS Audio 3 HOEP Audio 4 F Microprocessor SH phy Headphones 3NOHdQV3H ee DDR2 Intt s inis J7 ETHERNET ETHERNET Clocks CPU BOARD Fan PHY 58 0550 001 Figure 1
48. s m The current settings support the expected behavior A good first step is to recall the Factory Presets To do this press PRESET gt Recall Preset gt Recall Factory Preset To fully test this instrument you must have an appropriate Serial Digital Video source In some cases you may also need receivers or an oscilloscope to check outputs This instrument consists of several boards and major components The objective of this troubleshooting guide 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 WFMS5200 Waveform Monitor Service Manual 13 Troubleshooting Standard boards and modules Table 3 Required test equipment Test equipment SDI serial digital video test generator with embedded audio Instruments with option 3G require a 3 Gb s SDI source Power Supply external Display Assembly LCD front panel board with buttons LEDs and knobs FPGA board CPU board SDI board External Reference I O board Requirements 1080p 59 94 3 Gb s signals required 100 color bars 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 audi
49. 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 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 prevent ESD See page 9 This procedure consists of two main sections the 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 of the detailed troubleshooting procedures in the second section You should investigate and resolve the first symptom found as the Symptoms and Causes table assumes that the functions covered earlier in the table are working correctly 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 WFM5200 Waveform Monitor is highly configurable and its behavior is sometimes complex Before troubleshooting in depth verify that The installed options are as expected See CONFIG gt Utilities gt View Instrument Option
50. to the main chassis When reassembling tighten these to 0 9 N M 8 in Ib When reinstalling the fan bracket make sure not to pinch any cables between the fan bracket and the main chassis See Figure 3 Carefully lift the fan bracket and fans out of the main chassis Note the way the fan cables are wound around the fans then unwind them and drape the fan bracket over the side of the main chassis in order to get them out of the way of removing the boards below Continue disassembling the instrument You first must remove the FPGA board and the SDI board in order to access the fan drive connectors which are located below these boards on the CPU board WFM5200 Waveform Monitor Service Manual Removal and Replacement Procedures 0550 004 Figure 3 Screws that attach fan bracket to main chassis FPGA board 1 Remove the three pan head 40 X 0 187 T10 screws that secure the FPGA board to the SDI board below it When reassembling tighten these screws to 0 62 N M 5 5 in Ib When reinstalling the FPGA board flex the board slightly to ensure that none of the cables are pinched between the board and the main chassis 2 Liftthe FPGA board straight up in order to disconnect the inter board connector on the bottom of the FPGA board from the SDI board When reinstalling make sure that these connectors are aligned correctly before pushing the FPGA board down onto the SDI board 3 Disconnect the Display cable from J7 on the FPGA boar
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