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1. 59 Main PCB Trouble Diagnosis HHHH a3 Dk amp L 10 328 11 STILL Continuously Maintaining 0 12 OUT_CLK I E KE 13 DEN OUT 3 Same as DEN DELAY form of DEN 14 DCLK_OUT 4 Same as DCLK Only phase is different from DCL K 60 Main PCB Trouble Diagnosis FIG lt 9 1 gt DIGITAL PCB LAYOUT 9 CD1 CD2 POETA 1033 OO ES z CD3 CD4 CD5 CD6 C 3 3V ES 03 104 es END CD8 CD7 Y lt 1 KE ef gt 40 X_ERH X_SUSL X_SUSH 8020 3 Y SC21 9 Y 8021 7 22 BLK BLK 22 STB Y CLK 22 CLK2 M Z1 BLK m Y Sl2 2 22 CLK1 Y Sh 71 CLK2 Y SC20 2 71 j X_NSHELF 7 Ba X_HIGH X 1 1 5 61 Main PCB Trouble Diagnosis 9 3 X SUS PCB Trouble Diagnosis 1 After disconnect P201A CONNECTOR turn on the power 2 If the power turn on normally check X_SUS PCB 3 Disconnect P202A Connector 4 Check remaining voltage of P201A Current model contains Discharge Resistance for discharging High Voltage Vsus Vadd remaining inside the POWER PCB Therefore when dozen or more remaining voltage is measured it could be POWER PCB failure 1 Vsus 173V Voltage CHECK When keeping above 10 volt Using not less than 1K ohm 5 Watt resistance t
2. S M No DSP115BEFO Service Manual 42 PLASMA PDP MONITOR CHASSIS SP 115 Model DP 42GM GP DP 42SM SP DP 42WM WP Y Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr DAEWOO ELECTRONICS Corp http svc dwe co kr Nov 2002 1 Safety Precaution see 2 5 2 1 SPECIFICATION 2 0 Available hy Serie 2 Deserpuon Of Fach BLOCK Hu 4 1 1 A V BLOCK DIAGRAM 4 1 2 VIDEO PCB 4 1 4 KEY PCB 4 1 5 LED PCB ADA DRIVING BLOCK DIAGRAM ee in 4 2 2 DRIVING WAVEFORM 4 2 3 DIGITAL PCB BD e KING Bad 2 CONNECTION PCR SES DATA COE a ins 4 3 1 POWER BLOCK DIAGRAM S SERVICE MODE ee ee Ee 5 2 Default Values For SERVICE MODE Items 5 3 Description Of SERVICE MODE Items cee ens cee ernennen nn nn unaq 6 1 Adjusting WHITE BALANCE enne ehe 86 468 6 a sen 6 2 Adjusting DRIVING VOLTAGE And WAVEFORM 6 2 T Adjusting POWER 6 2 2 Adjusting X SUS PCB 6 2 3 Adjusting Y SUS PCB FIG 6 1 X SUS PCB Adjusting Points EEN EEN FIG 2625 Y SUS PCB Adjusting
3. YES DIODE VOLTAGE NO Normal With SCANH L PCB separated from SCANL H PCB refer to 9 4 FIG lt 24 gt lt 25 gt AC PWR ON gt PWR ON with Remote Controller Discharge still NO 9 abnormal SCANL H PCB NO DIODE VOLTAGE YES Normal X SUS PCB is N G Replace Y SUS PCB YES SCAN PCB is N G NO Discharge still abnormal YES Y SUS PCB is N G Replace SCANL H PCB Y SUS PCB is N G SCANL H PCB is N G FIG 10 4 Trouble Diagnosis Flow when Discharge luminescence is abnormal 83 11 1 Joo mi 2 Ni amp Go PO 20 1 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 CO N 38 39 40 41 42 43 IA 45 ASSEMBLY LIST PCB ASS Y NAME VIDEO PCB AS PCB AS DIGITAL PCB AS X SUS PCB AS Y SUS PCB AS SCANH PCB AS SCANL PCB AS CONN LEFT PCB AS CONN RIGHT PCB AS MODULE POWER CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR BRACKET SUPPORT L AS BRACKET SUPPORT RAS BRKT VIDEO CABLE TIE CLAMP CORE CLAMP WIRE CLAMP WIRE FILTER EMI FILTER EMI SCREW MACHINE SCREW MACHINE SCREW MACHINE SCREW MACHINE SCREW MACHINE SCREW MACHINE SCREW TAPPTITE SCREW TAPPTITE SPEC PLATE SUPPORT CIRCUIT AS
4. x Windies wil new install the new firmware m the Make device is connected to tis va Neat hen fe dee d power the device We wil will initiate Ihe Salect the serial port device is r Comm Port comeci d to then click Next Baud Fale 11510 Windows will install the Hew fime m the Make eure device iz connected to Pis compute pama e on Afer 3electina power the device on This wil initiate the download Salect the serial port te device iz konn Port connected to then click dfe Car seconds completa Download pores f r ffe Flasher HEX rr 44 8 When all files Upgrade are complete a window below will open Push Finish button to complete the process 45 6 SET Disassemble Assemble Method 8 SET Disassemble Assemble Method 8 1 Facts You Must Know When Disassembling Assembling PDP SET 1 BACK COVER can be opened without separating the STAND from the PDP SET 1 e BACK COVER can be opened without laying the SET 2 When PDP SET 15 opened with STAND attached STAND connecting screws without the BACK COVER must be used to stabilize the set 3 When closing BACK COVER again after the work 1s finished unscrew STAND connecting screws without the BACK COVER and the
5. The above table Output Voltage output from the following connector based on the Parts Side s silk name of POWER Vsus Vsus Vyer NC HG HG Vdr NC Vsus Vsus NC HG HG HG HG Vdr P2 P1 NC LG NC LG VG Vstd v2 VG VG v2 V4 P4 NC P5 NC P3 SG VG NC LG B VG PR LG 8 V5 1 NC Vi NC P2 is connected to Y SUS PCB s P101A is connected to X SUS 5 P201A is connected to VIDEO PCB 5 PA4 5 is connected to VIDEO 5 PAS P3 is connected to DIGITAL s P301A P6 is connected to JACK 5 6 35 5 SERVICE MODE 5 1 Entering SERVICE MODE Push Remote controller s UP MUTE DISPLAY MUTE BUTTON to enter SERVICE adjust MODE 5 2 Default Values fot SERVICE MODE 1 PW171 SUB BRIGHTNESS 28 SUB CONTRAST 40 R BIAS 68 G BIAS 65 B BIAS 70 R GAIN 67 G GAIN 45 B GAIN 78 2 7118 SUB 128 SUB CONT 50 SUB 64 SUB TNT 0 SUB SRP 10 3 DPTV SUB BRT 59 SUB CONT 13 4 CXA3516 SUB CONT 58 Cb OFFSET 39 Cr OFFSET 37 HYS 52 THRSLD 14 SERVICE MODE 5 MSP34X0 PRESCALE 22 5 3 Description of SERVICE MODE Items 1 PW171 Note This article 15 for adjustment after replacement of VIDEO PCB These Values may vary from set to set Therefore 1f these values are recorded before replacing VIDEO PCB you do not need to adjus
6. FIGURE COLLECTION Vr d 054 FT 60I 2 TOHINOVIVA Z LIYT NNOI Veosd 5054 8 FOI 2 TOHINO Z IH DLNNOO amp TV LIDId Kack veo 0 d 2 TOHINO VIVA Z GPOCIOHINOO X IHOTINNOJ lt LISI VEOTI TOULNOI X SNS A TVLIOIG VITAE Een d 08 03 X x id 808 3 TV LIDIq ES Bag Data ch 5 4 728 AS TVLIDId 4 FIG lt 12 gt DIGITAL 97 FIGURE COLLECTION FIG lt 13 gt AC SWITCH ASSEMBLY 98 A 8 2 LP L Mi D La CH pl m KH FIG lt 14 gt SCAN ASSEMBLY 1 99 801 508 E GG E T m 1 i uh E 1 TTT dar Hl 11 hana CET oy EEEE EEN FIG lt 15 gt SCAN ASSEMBLY 2 100 FIGURE COLLECTION FIG lt 16 gt X SUS ASSEMBLY 101 mu la A B E FIG lt 17 gt FRONT MASK ASSEMBLY 102 5958 10 ATV LIAT SS VIO MALTA SUIXT LHOTA SS
7. Adjust VOLUME direction as shown below RY10 3 Vramp_up Ramp Up voltage Ramp Up voltage of Reset Waveform METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting DCY53 s electrode refer to FIG lt 6 2 gt FIG lt 2 gt and the following Figure Adjusting VOLUME 7 refer to FIG lt 6 2 gt and FIG lt 2 gt Standard Voltage 230V This value could be different from the optimum adjusting voltage Optimum adjusting Voltage Stated the LABEL refer to FIG lt 1 gt DCY53 4 Vscan SCAN voltage SCAN IC s GND voltage when SCAN METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting TP QY5 S Source electrode refer to FIG lt 6 2 gt FIG 2 and the following Figure Adjusting VOLUME RY9 refer to FIG lt 6 2 gt and FIG lt 2 gt Standard Voltage 62V This value could be different from the optimum adjusting voltage Optimum adjusting Voltage Stated the LABEL refer to FIG lt 1 gt G D S D 5 40 b ell AA AAA Y Le wm K 1 D Vl KA 2 H ho BB H VS W 2 510 00 DCUI6 RUI FIG lt 6 1 gt X SUS PCB Adjusting Points 41 b ell ARAS AAA K EN DP 2 5 RYIO RY2 FIG lt 6 2 gt Y SUS Adjus
8. EE TSOFTWARE UPGRADE Method sia 8 SET Disassemble Assemble Method ME 8 1 Facts You Must Know When Disassembling Assembling PDP 5 2 8 2 PCB Disassemble Assemble Method 8 3 FRONT MASK Disassemble Assemble Method DE Contents 0 Main PCR Trouble Diagnosis Sen 0 9 1 VIDEO amp JACK PCB Trouble Diagnosis mee 49 0 2 DIGITAL PCB Trouble Diagnosis ren u 55 DIGITAL PCB Ee RR WEE 9 3 X SUS PCB Trouble 507 6 67 ______________ 160 9 4 Y SUS amp SCAN PCB Trouble Diagnosis HH 65 9 5 CONNECTION PCB amp Trouble Diagnosis nn 71 9 6 POWER PCB Trouble Diagnosis En 72 IO TPOUBLE 1101111093 10 1 Facts You Must Know When Diagnosing And Repairing enee 73 10 2 Representative Symptoms When Each PCB Breaks Down enee 73 10 3 Trouble Diagnosis And Repairing Method For Representative Symptoms 77 FIG lt 10 1 gt Trouble Diagnosis Flow when SHUT DOWN occurs eee FIG lt 10 2 gt Trouble Diagnosis Flow when Low Voltage SHUT DOWN occurs 81 FIG lt 10 3 gt Trouble Diagnosis Flow when High Voltage SHUT DOWN occurs 82 FIG lt 10 4 gt Trouble Diagnosis Flow when Abnormal Discharge occurs e 83 IS BIG WIRE _ ______________ BEIGE SENE credit iv eoi VI
9. VOLTAGE 1 0 TIME 20 0 us A Chi 1 844 88 ROG ODO 15 VOLTAGE 1 0 Ww MA ms A Chi Busk WM TIME 20 0 ma hie 0 00000 amp D DCLKB CLOCK for DISPLAY output by PW171 HH STO T VOLTAGE T W 49 0 A Chi ir TIME 40 0 nm 1 ve EDO Drs 4 1 3 JACK PCB Separate and process various VIDEO and AUDIO signal 1 IC706 VIDEO SYNC SELECTOR This chooses Y Cb Pb Cr Pr or RGB signal to output Y Cb Pb Cr Pr to separate SYNC and to perform SYNC COUNTER 2 IC704 7_INPUT 3_OUTPUT AUDIO VIDEO SWITCH The IC perform AUDIO or VIDEO SWITCHING 3 IC700 MULTI STANDARD SOUND PROCDSSOR AUDIO SINGNAL VOLUME control EQUALIZER control 16 IP R_OUT L_OUT AUDIO SIGNAL that goes into MSP3420 before AUDIO PROCESSING ek 510 8 1 0 A Chi 4 re Dous 4 IC701 IC700 TDA 7480 FTP A RIGHT LEFT AMP input signal before 30dB amplification wk A Chi L ie Dous 4 1 4 KEY PCB Input PCB using KEY 4 1 5 LED PCB PCB for REMOCON CONTROL D m VOLTAGE 1 0 V A Chi 3 88 TIME 10 0 ma MACC 160 Dous 17 Description Of Each BLOCK 4 2 DRIVING BLOCK 4 2 1 Driving BLOCK DIAGRAM SCAN TOP DATA Y SUSTAIN INPUT TIMING ENERGY X SUSTAIN CNOTROL RECOVERY PANEL ENERGY amp S
10. 121 Trouble Sumpton Picture Trouble Symptom Picture lt 11 gt 122 Trouble Sumpton Picture Trouble Symptom Picture lt 12 gt 123 DAEWOO ELEC TRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail djkoo web dwe co kr
11. 1st_chip A500K 180 2nd_chip A500K270 m n aM MC ID3 104 RGB DATA 0 d nverse Gamma Weight PISO SDRAM Conversion 64M x 2 el al lt _ 2 2 S 2 5 ROM 8 5 Data Flow z T 5 8 5 Control Address Flow A ID33 9 gt ROM Data Flow E 5 gt N lt DSP 4280GM Digital B D Block Diagram gt 1 Digital PCB s Main Part 1 Actel FPGA A500K180 PQ208 1 EA Location No ID Power Internal 2 5V 3 3V Package 208 Typical Gates 150 000 User VO 164 2 Actel FPGA A500K270 BG436 1 EA Location No ID2 Power Internal 2 5V 3 3V Package BGA 456 Typical Gates 215 000 User I O 362 3 SDRAM 45643232 70 86pin TSOP 2 EA Location No 3 4 Power 3 3V Size 64 M 512K 32 bit 4 Banks Description Of Each BLOCK 4 50MHz Clock Oscillator EA Location No XD Power 3 3V 5 Buffer IC 74LCX541 17 EA Location No 9 25 Power 5V Input Voltage 3 3V Output Voltage 5V 6 Buffer IC 74LCX541 4 EA Location No ID5 8 Power 3 3V Input Output Voltage 3 3V 7 EPROM M27C1024 PLCC44 1 EA Location No ID33 Power 5V Input Voltage 3 3V Output Voltage 5V 8 2 5V Regulator LP396
12. GND GND Over 12V eT Over VE ar GND Over 12V After about 10sec OPEN Over 0 8V OPEN After about 10sec OPEN GND GND Over 0 3V OPEN 2 ks RE E E Note after Y SUSTAIN B D REPAIR O Make sure to check power modules high voltage Vsus Vyer If remaining voltage detected use resistance to discharge them O Make sure to check Connectors Power Connector Signal Connector Connector between SCAN PCB and Y SUS 5 Connection O After replacing Y_SUS PCB readjust Vramp_up Vscan Voltage and Slope of Ramp_up Ramp_down as Optimum adjusting Voltage Table located above VIDEO PCB Refer to 6 2 3 O Make sure to check screw connection between X SUS PCB and Panel back plate O When using scope to check s gnals GND terminal must be attached to HEAT SINK 70 Main PCB Trouble Diagnosis 9 5 CONNECTION PCB amp DATA Trouble Diagnosis 1 If vertical line 15 missing or the discharge 15 other than bar shape on the screen check CONNECTION and DATA 2 Check CONNECTION and or DATA if following When P202 15 connected 1 and or 5V 15 not supplied normally But when separated and or 5V is supplied normally If this is the case check each connectors connection Check if there isn t any extraneous material between the Connecto
13. exchange JACK PCB 52 6 When Key does not operate Y N 1 Confirm AC connection 2 Confirm Power S W ON 3 Check other PCBs Does LED next to Power S W turn on in Red 1 Check the connection to Video PCB 2 Check the Video PCB or other PCBs Does LED turn on in Green 1 PA601 CONNECTOR has a trouble 2 Exchange Key PCB Is P601 s 2nd pin output normal Y Check VIDEO PCB 53 Main PCB Trouble Diagnosis 7 When Remote Controller does not operate T N 1 Confirm AC connection 2 Confirm Power S W ON Does LED next to Power S W turn on in Red 3 Check other PCBs N Check the Battery of Remote Controller Does Remote Controlle operate Does Set turn on with N 1 Check the connection to VIDEO PCB Key operation 2 Check VIDEO PCB Whenever push remote controllers button does P602 s 2nd Pin output N LED PCB has a trouble So Exchange LED PCB 1 VIDEO PCB s IR Receiving BLOCK has a trouble 2 Check VIDEO PCB 54 9 2 DIGITAL PCB Trouble Diagnosis Check voltage using MULTIMETER DC voltage measure MODE Refer to FIG lt 9 1 gt for check point position 1 Turn Power OFF Turn HIGH VOLTAGE Switch of POWER PCB OFF Turn the Power ON 2 Check POWER for 5 V 3 3V Input 1 5V input 1st and 2nd pin from the top Normal 1f 4 8V 5 2V 2 3 3V input 6t
14. Cb Cr and process signal A DECOE CHIP ENABLE part When signal process 15 done by 401 output 3 3V DC LEVEL 12 3 IC406 DPTV MVS A Scan Rate Converter which converts Interlace signal into Progressive signal A VVS VERTICAL SYNC output by DPTV MVS ek Simo VOLTAGE 1 0 W TIME 10 0 mua VHS HORIZONTAL SYNC output DPTV MVS ach i i F VOLTAGE 2 0 Y F Gas A Chi 3 0453 TIME 20 0 li 0 00000 5 C VCLK CLOCK output by DPTV MVS VOLTAGE 1 0 V TIME 40 0 mu 13 4 IC500 CXA3516R 3 channel 8 bit 165MSPS A D converter which process signal EE A GCOAST COAST CONTOL Signal for PLL input CXA3516 B Ap mg Chi BIR gt fie o 000000 5 1 B GHS HORIZONTAL SYNC for GRAPHIC output by CXA3516 VOLTAGE 2 0 W 10 A Chi 1 00 TIME 10 0 us gee 0 00000 4 GCLK for GRAPHIC output by CXA3516 VOLTAGE 17 0 V TIME 40 0 dp eg A Chi BIR mid 0000000 S D GFBK SYNC for PLL 2 0 W A TIME 10 0 Wet 0 00000 5 IC600 PW 171 Image processor IC SE A DEN DATA ENABLE output by PW171 VOLTAGE 1 0 Y Ml Chi S TIME 20 0 um 00 OO Gris B DHS HORIZONTAL SYNC output by PW171
15. LOGIC IC power supply Also power supply of 5V Y2 5V Y3 is supplied through 7805 regulator from DC DC converter Trans TY2 s output Yer Supplied by POWER MODULE 166V GND Power supply GND Y1 Y2 4 Signal Y SUSTAIN SUS H SUS L ER HIER L supplied by P102A Y ERASE supplied by P103A Y SCAN supplied by P103A Y RAMP DOWN amp S W supplied by P103A Y RAMP UP amp S W supplied by P103A SCAN CLK SII SI2 BLK supplied by P103A 28 Description Of Each BLOCK 4 2 6 CONNECTION PCB amp DATA 1 Structure of CONNECTION PCB O Divided into 2 PCBs CONN LEFT amp CONN RIGHT O CONN LEFT From DIGITAL PCB through connector P304 data signal and 5V IC Power are supplied Power is supplied to PC 5 7 through PCO8A CONN RIGHT From DIGITAL PCB through connector P304A data signal and 5V IC Power are supplied 5V Power is supplied to X board through P202 Also Data signals are supplied from DIGITAL PCB through P302A and X sustain X shelf signals are supplied from X SUS PCB through P202 Vadd Power 1s supplied to PC 1 4 from X SUS PCB through P202 and to CONN LEFT through PCSA1 and PCOSA 2 Structure of DATA COF O 7 Type module PC 1 7 O DATA signals are transferred to CONNECTION PCB from DIGITAL PCB through P304A P303A P302A And through PC 1 7 each are transferred to DATA COF e SV supplied from DIGITAL PCB through connector P304A flows POWER
16. Line SCAN Y SUS DIGITAL Vertical Line DATA CONN LEFT RIGHT DIGITAL lt 3 gt Trouble Repairing Procedure Single Vertical Line Occurrence DATA COF or PANEL has a trouble So replace PANEL Block Vertical Line Occurrence Most of the time this 15 caused by bad connection due 10 extraneous materials or connectors not connected properly Firstly following Data Path DIGITAL CONN LEFT RIGHT Among seven DATA COF PAD CONN LEFT PCB drives left 3 PC5 PC7 and CONN RIGHT PCB drives right 4 DATA COFs So first check which one of CONN LEFT and CONN RIGHT drive problematic PAD DATA check the connection between each PCBs Secondly check if there are dust bits of iron or any other extraneous material between the connectors Thirdly reassemble and check if the problem is solved If the problem still exits try to replace related PCBs one by one with the DIGITAL PCB as a start Single Horizontal Line Occurrence Firstly if the position of the line is at the upper part of the screen check SCANH PCB s connector 78 Main PCB Trouble Diagnosis connection PS01 PS04 Otherwise check SCANL PCB 5 connector connection PS05 PS08 Secondly check 1f there are no dust bits of iron or any other extraneous material between the connectors Thirdly reassemble and check 1f the problem 15 solved If the problem still exits try to replace problematic SCAN PCB Block Horizontal Line Occurrence Firstly check p
17. PCB X SUS PCB connector P202 gt CONNECTION PCB gt DATA 29 4 3 POWER BLOCK 4 3 1 POWER BLOCK DIAGRAM Line AC Input Filter ST BY oV Description Of Each BLOCK 5V out 12V out 30V out Sequence 15V out Control 5V out Block 3 3V out Vadd Vadd y Block POWER ON OFF Control ST BY Vsus Vver Main B Protection Block If Power is ON V_PFC and V_LOW BLOCK is working and Voltage generated in V_LOW s 2nd Coil actuates V_ADD After V_ADD is ON 2nd Voltage generated in V_ADD BLOCK acutates V_SUS BLOCK again Description Of Each BLOCK 4 3 2 POWER PCB Rating AC100 240 V Single Phase Regulation Method Transistor amp Switching Method Rating Input Frequency 50 60Hz Inrush Current under 35A Output Voltage is as follows Voltage Vdc Current Adc Rating Variable Fx Allowable Ripple Ripple Noise overshoot Voltage Voltage Voltage V mE m 051 051 6 N PN UM Oo B Oo B 65 6 _ 6 UN UN I a a CD 1 ON EB I lt gt I When Protect Circuit operates Outputs except Vstb suspended But when Vstb 1s abnormal all Outputs are suspended OVP Over Voltage Protection OCP Over Current Protection 13 6 3 60
18. Trouble Diagnosis PWR OFF POWER PCB s HIGH VOLTAGE SWITCH OFF refer to FIG lt 21 gt Disconnect X SUS Y SUS 5 PWR Connector P201A P101A PWR gt PWR ON with Remote Controller YES SHUT DOWN NO occur AC PWR OFF AC PWR OFF Disconnect DIGITAL s PWR Reconnect only X SUS s PWR Connector P301A Connector P201A AC PWR ON gt AC PWR ON gt PWR ON with Remote Controller PWR ON with Remote Controller NO SHUT DOWN occur SHUT DOWN occur NO VES YES VIDEO or JACK DIGITAL PCB 15 PCB is N G X SUS PCB is N G Y SUS or SCAM PCB is FIG 10 2 Trouble Diagnosis Flow When LOW VOLTAGE SHUT DOWN occurs 91 Main PCB Trouble Diagnosis PWR OFF POWER PCB s HIGH VOLTAGE SWITCH refer to FIG lt 21 gt Disconnect X SUS Y SUS s PWR Connector P201A P101A PWR ON gt PWR ON with Remote Conrtoller NO YES SHUT DOWN occur AC PWR OFF POWER PCB is Reconnect only X SUS s PWR N G Connector P201A PWR gt PWR ON with Remote Controller SHUT DOWN occur YES X SUS PCB is N G Y SUS or SCAN PCB is N G FIG 10 3 Trouble Diagnosis Flow when HIGH VOLTAGE SHUT DOWN occurs 92 Main PCB Trouble Diagnosis PWR OFF gt Y SUS SCAN PCB DIODE TEST refer to 9 4 and FIG lt 23 gt
19. either screen 5 upper or lower part is abnormal then it is possible that one of SCANH PCB or SCANL PCB is broken or having a bad CONNECTION When SCAN PCB has some problems those are most likely bad CONNECTOR CONNECTION caused by dust or extraneous material Therefore check the condition of CONNCETOR CONNECTION before diagnoses the PCB lt Symptom 1 gt Horizontal lines BLACK or irregular data group or single occur refer to Trouble Symptom Picture lt 5 gt lt 12 gt lt Symptom 2 gt Upper and lower screen overlap each other Upper data influence lower data refer to Trouble Symptom Picture lt 8 gt lt Symptom 3 gt Not even weak discharge luminescence shows on screen lt Symptom 4 gt Discharge luminescence on screen 15 unstable refer to Trouble Symptom Picture lt 8 gt lt Symptom 5 gt POWER SHUT DOWN occur refer to Service Manual 10 3 3 Symptoms of DATA COF Trouble Note 1 DATA COF consists of total 7 PADs in a SET Each COF PAD consists of total four 96 PIN output DATA DRIVER IC which drives one seventh part in total 2559 853 3 R G B vertical lines Therefore if specific screen part is abnormal it is likely that particular DATA COF is broken or BAD CONNECTION Moreover DATA COF is connected to DATA Electrode Z Electrode Vertical Direction of PANEL by HEAT COMPRESSION Processing So if DATA has a trouble the entire PANEL must be replaced Note 2 DATA 5
20. that in order to display new image every cell s condition must be uniformed to erase wall charge made by previous discharge and make new wall charge for next address discharge Ramp shape signal 15 added to supply every cell uniform wall charge O To decrease Background luminescence and improve contrast t 15 applied once per frame O Full Writing signal output by Y board 15 Vsus electric potential supplied by power module plus ramp shape output signal made by DC DC Converter TY 1 2 ADDRESSING O Previous to SUSTAINING it is procedure to select charging cell for image display O In other words it is the stage to make wanted cell to form wall charge O During this stage SCAN block operate in Y board and SHELF block X_HIGH in X board 19 Description Of Each BLOCK 3 SUSTAINING O A ter the Addressing period this stage 15 to add Sustaining pulse to selected cell to make SUSTAINING discharge continue O For each X Y board sustain block opposite polarity rectangular pulse which have ER_H gt SUS_H ER_L gt SUS_L order is distributed to Panel s X Y electrode at a constant frequency 4 ERASING O Removing operation for Electrical discharge inside each cell to address new data in next Sub field It 15 a Ramp output signal similar to Full Writing signal e Ramp down block operates in Y board and Shelf block X_N_SHELF operates X board 20 Description Of Each BLOCK 4 2 3 DIGITAL PCB ID1 ID2
21. that of Optimum adjusting Voltage LABEL readjust the voltages referring to 6 2 1 Adjusting Power PCB 2795 10 TROUBLE SHOOTING 10 1 Facts you must know when Trouble diagnosis or repairing 1 Set s trouble diagnosis and repairing means Module Exchange In other words find which PCB modules are not working and replace them with normal PCB modules Do not need to fix broken PCB modules in themselves 2 This TROUBLE SHOOTING list only contains representative and simple PCB trouble diagnosis and Module Exchange method Therefore 1f you find Sets that are difficult to diagnose or to repair contact Daewoo Electronics 3 Basic TROUBLE SHOOTING procedure Check Trouble Symptom Detach BACK COVER Trouble Diagnosis replace broken PCB module Adjust new PCB module when replacing X SUS Y SUS POWER VIDEO PCB need Adjusting Prodedure Refer to 6 Adjusting Method HEATRUN for at least 30 minutes input TEST PATTERN FULL WHITE FUNCTION CHECK Repair Complete 4 Keep broken PCB modules separately for replacing with new PCB modules S Required equipments for trouble diagnosis DIGITAL MULTIMETER User Mode measure DC VOLTAGE measure DIODE VOLTAGE SHORT OPEN TEST Screwdriver or electric screwdriver plastic adjusting tool 6 Each BLOCK operation was explained including DIGITAL OSCILLOSCOPE signal but this 15 reference only and applying them for repair is not necessary After additional educa
22. 00900 FRAME BACK A 4 6061 1 2 33 4955201100 PLATE BACK 1 A5052 12 0 32 4923002020 PANEL GLASS 1 DSP 4280GM 31 7178301010 SCREW TAPTITE 12 TT2 WAS 3X10 MFZN 30 7173401210 SCREW TAPTITE 22 TT2 BIN 4X12 MFZN 29 CUSHION PANEL 10 10 0 10 00 260 Wa 28 SHIELDRON F2 2 10 0X1 0DX569 Cu Ni 27 SHIELDRON F1 2 10 0X1 0DX942 Cu Ni 26 4956501600 POST FRAME 25 SUM32 MFZN 25 4953803100 FRAME SIDE L R 1 A6061 24 4953803000 FRAME SIDE DOWN 1 A6061 23 4953802900 FRAME SIDE TOP 1 A6061 22 7063350612 SCREW MACHINE 2 MBIN 3X6 MFZN BK 21 7173300811 SCREW TAPTITE 4 TT2 BIN 3X8 MFZN 20 4953201000 BRACKET POWER S W 1 SECC 0 8 19 POWER S W 1 18 PCB LED 1 17 4923200200 POST CLAMP 4 SUM32 MFZN 16 4953501500 HOLDER INSULATION D 4 HIPS 15 4953501400 HOLDER INSULATION 4 HIPS 14 4953401000 BRACKET CLAMP UL 1 ADC10 13 4953401100 BRACKET CLAMP UR 1 ADC10 12 4953401200 BRACKET CLAMP DL 1 ADC10 11 4953401300 BRACKET CLAMP DR 1 ADC10 10 4921300100 BRAND MARK 1 AL 9 4922800100 FILTER 1 PDF 69H01 8 7541321000 RUBBER FILTER 8 CR60 3 0 7 4957502800 COVER BUTTON PCB 1 SPTH 10 3 6 PCB CONTROL 1 5 4954901500 BUTTON CH 1 ABS 4 4955500900 DECO SENSOR 1 PMMA 3 4956700300 SPRING POWER SW 1 SUS304WPB 2 4954800900 BUTTON POWER 1 HIPS 1 4952002300 MASK FRONT 1 PC ABS No PART CODE PART NAME QTY MATERIAL REMARKS unis mm 559898 CHEOKEDBY eeng APPROVED BY PART NAME SCALE NS ul es EXPLODED VIEW ori DIGITAL TV RESEARCH CENTER MODEL res mm D DAEWOO Wa DAEW
23. 1 When moving or laying down a PDP Set at least two people must be working Avoid any impact towards the PDP Set 2 Do not leave the broken PDP Set on for a long time To prevent any further damages after check the broken Set s condition make sure to turn the power AC off 3 When opening the BACK COVER turn off the power AC to prevent electric shock When a PDP is on high voltage and high current exist inside the Set 4 When loosening screws check the connecting position and type of the screw Sort out the screws and store them separately Because screws holding PCB are working as electric circuit GROUNDING make sure to check 1f any screw 1s missing when assembling 5 you open the BACK COVER you will see a Panel Gas Exhaust Tube refer to FIG lt 10 gt If this part is damaged entire PDP PANEL must be replaced Therefore when working be careful not to damage this part 6 A PDP Set contains different kind of connector cables When connecting or disconnecting connector cables check the direction and position of the cable beforehand 7 When disconnecting connectors unplug the connectors slowly with care Especially when connecting disconnecting FFC film cables or FPC cables do not unplug the connectors too much instantaneously or strongly and always handle the cables with care Refer to FIG lt 10 gt FIG lt 11 gt 8 Connectors are designed so that f the number of pins or the direction does n
24. 2 WAS 3X10 MFZN PE FILM 98X78 PCBEHE2 25M 01 W B BM TZ WA OB E B B JB B 528 k B B Pj B D ANA B RE hf K K WM 2 LL 88 INSULATION BUTTON CH 1 87 PCB XSA AS 1 86 PCB X SUS AS 1 85 PCB POWER AS 1 8 PCBVIDEO AS la 83 PCB DIGITAL AS 1 82 PCB Y SUS AS 1 81 PCB SCAN LOWER AS 1 80 PCB SCAN UPPER AS 1 79 PCB CONNECTION L AS 1 78 PCB CONNECTION R AS 1 77 PCB DATA AS 7 76 GUIDE RIVET 8 SUM32 MFZN 75 GUIDE POST 1 SUM32 MFZN 74 GUIDE POST 8 4
25. 4EMP 2 5 Location No 1032 Input Voltage 5V Output Voltage 2 5V 9 EMI Reduction IC P2040 Location No 34 Power 3 3V 2 Data Flow 1 Input from Video PCB 8bit Data per each R G B synchronized by DCLK DVS DHS DEN S_RESET V_MUTE DCLK 33 5 MHz 2 Inverse Gamma amp Dithering Block After mapping input data according to Reverse Gamma Correction Table execute Dithering Process 3 Weight Conversion Block Map input data according to Weight Conversion Table which is based on optimum PDP Driving Weight Pattern 22 Description Of Each BLOCK HROM ROM Controller Block ROM contains Reverse Gamma Correction Table Weight Conversion Table APL Table and so on Rom Controller Block generate Address amp Control signal for receiving these data from ROM S PISO Parallel Input Serial Output Block Load 10 pixels per each R G B data with parallel type and shift them with serial type in order of Weight LSB first These shifted data is stored in Internal Memory of A500K270 1D2 with based on DCLK 33 5MHz After that those data go into External Frame Memory SDRAM in order of Weight with based on CLK50M In other words PISO Block execute three steps Data Load Data Shift amp Internal Memory Write Internal Memory Read amp External SDRAM Write successively To process with real time there are three PISO Blocks 6 SDRAM amp SDRAM Con
26. AN POWER DATA DIGITAL CONN LEFT RIGHT lt 3 gt Trouble Repairing Procedure First refer to 6 2 Adjusting Driving Voltage and Waveform to check if each voltage 15 adjusted according to Optimum Voltage LABEL If the there are voltage difference adjust voltage according to the Optimum Voltage LABEL and then check the screen If voltages are adjusted correctly perform trouble diagnosis in the order as shown in FIG lt 10 4 gt and then replace broken PCB 3 When Vertical or Horizontal lines regular or irregular single or block occur lt 1 gt Definition of Horizontal Line Vertical Line Horizontal Line Vertical Line OPEN Problematic line s electrode or signal line is OPEN so it is displayed BLACK Horizontal Line Vertical Line SHORT Problematic line and adjoining lines are SHORTING each other creating abnormal color lines Single Horizontal Line An irregular Horizontal Line exists independently on the screen Refer to Trouble Symptom Picture lt 6 gt Block Horizontal Line Horizontal Line with Block Shape exists on the screen Refer to Trouble Symptom Picture lt 5 gt Single Vertical Line An irregular Vertical Line exists independently on the screen Refer to Trouble Symptom Picture lt 4 gt Block Vertical Line Vertical Line w th Block Shape exist on the screen Refer to Trouble Symptom Picture lt 5 gt lt 2 gt PCB Check Priority Left to Right Horizontal
27. BLACK LEVEL of Cr CHANNEL 4 HYS Set up HYSTERISIS of SYNC 5 THR SLP Set up THRESHOLE of PEDESTAL LEVEL 5 MSP34X0 Note This article 15 not for adjustment after replacement of VIDEO PCB Therefore do not change initial values 1 PRESCLE Set up AUDIO output signal s magnitude 6 MISC 1 TST PTRN AT Changing TEST PATTERN RED gt GREEN gt BLUE gt BLACK gt WHITE every minute automatically 2 TST PTRN Changing RED gt GREEN gt BLUE gt BLACK gt WHITE TEST PATTERN manually using VOLUME UP KEY 3 ATPWR ON Condition where turning AC power on automatically turns the SET on OFF Condition where turning AC power on makes the Set STAND BY and Remocon s POWER on turns set on from STAND state 4 JACK Set up depending on JACK BOARD s input MODE MULTI Used by DSP 4280 series MONITOR Used by DSP 4282 series MONITOR Used by DSP 4282 series with DSP JU20 attached Note Wront setup causes displaying problem So you must be careful when SETTING 5 PXL SFT ON Moving screen up down left and right by some PIXEL s every 20 seconds OFF Fixing PIXEL position No movement on screen Note PIXEL SHIFT function 15 solution to characteristic phenomenon so called Image Sticking problem Leave this function When displaying many fixed screen like PC screen When this function 15 ON the screen will move a little for every fixed interval but a human eye can not recognize 1t
28. CAN RECOVERY DATA ERASE SHELF CONTROL INTERFACE WRITING SCAN SIGNAL BOTTOM Verase DATA DRIVER Vstb Video etc Driving circuit block looks like above diagram First within the Digital board timing control data interface signals input to Y X DATA board Also low voltage and high voltage powers such as 15V 5V Vsus Yer are supplied SCAN is divided into two PCB upper and lower and DATA driver can drive 7 COF module Also Connection board which is located at the lower part of the panel is divided into two PCB It transfer 5V power supply as well as various Y X DATA board power supply is transferred from Power module to X board through Connection board to Data driver 18 Description Of Each BLOCK 4 2 2 Driving Waveform Y DRIVING ________ i 1 SUB FIELD 230V Sa u 173 173V 166V GND i 4 VveHpiZ 7 4 ae _ MAA E A MS ae SCAN ERASING L X DRIVING q1 FULL WRITING X SHELF SUSTAINING ADDRESSING gt L 68V n GND L N N PDP Driving signal 15 largely divided into three Y X Z as shown above They are outputs of Y board X board DATA board COF respectively Each Sub field is divided into ADDRESSING SUSTAINING ERASING parts FULL WRITE pulse from Y board adds once per frame 16ms 1 FULL WRITING O It is a process
29. DEO JAOK Zee ee NEE TEELDOWN 08 205 RICHT E Sais _ OL FIG 10 FIG 11 FIG 12 FIG 13 FIG lt 14 gt FIG 15 FIG 16 FIG 17 FIG 18 FIG 19 FIG 20 FIG 21 FIG 22 97 98 99 100 DIGITAL ACSWITCH ASSEMBLY SCAN ASSEMBL Y 1 SCAN ASSEMBLY2 102 103 FRONT MASK ASSEMBLY FRONT MASK INSIDE POWER ADJUSTING POINTS POWER HIGH VOLTAGE SWITCH SA HOW TO ADIUST VOLTAGE Be ma ee 95 96 101 104 106 107 223s Y SUSA SEAN PCB DIODE TEST EIG 24s SCANHPCBADIODE TEST adi 100 FIG 2955 SCANT PCB DIODE TEST sa sa 110 FIG 226 S STEP GRAY SCALE PATTERN estad l Trouble Symptom ee fO Trouble Symptom E s en np Trouble Sympiom Picture EG 13 Trouble Symptom Picture 2 3 Trouble Symptom PICLENS ROS SRR ERS DER e Trouble Symptom Plot xD _____________ T TO Trouble Syiiptom e Trouble Sympioni Tiouble S gt nik na Trouble Symptom Picture 0s Kr Trouble Symptom Picture l0 a 2 Trouble Sympion Picture 115 une u 20 Trouble Symptom Pieture 192 sauer 23 1 Safety Precautions
30. HS DVS signal do not appear VIDEO PCB has a trouble 2 Check P502 s 1st PIN V SYNC 2nd PIN H SYNC check lt when 10801 gt 50 If above signal do not appear JACK PCB has a trouble 3 TP GHS GVS GCLK check If GHS GVS GCLK signal do not appear JACK PCB has a trouble 4 When PC signal do not appear on screen 1 Input DTV or VIDEO signal and see if DTV or VIDEO signals shown on screen If no signal then check TP DCLKB DHS DVS If DCLKB DHS DVS signal do not appear JACK PCB has a trouble 2 P502 s Ist PIN V SYNC 2nd PIN check H SYNC when 800 X 600 If above signal do not appear JACK PCB has a trouble 3 GHS GVS GCLK Check GHS GVS GCLK signal do not appear JACK PCB has a trouble 51 5 When No Sound Y Does sereen appear Is the Sound input Jack correctly connected Is the Speaker correctly connected Is TPL_OUT or R_OUT normal Is TP RIGHT or LEFT normal Is JP708 s SOUND output JACK PCB normal SPEAKER or SOUND CABLE has a trouble So exchange SPEAKER or SOUND CABLE Main PCB Trouble Diagnosis 1 Confirm AC connection 2 Confirm Power S W ON 3 Check Video or other PCBs Check the connection of Jack PDP or AV device Check the connection of Speaker 04 2069 has a trouble So exchange JACK PCB IC 700 MSP3420 has a trouble So exchange JACK PCB 701 IC702 TDA7480 has a trouble So
31. IVER IC STV7617 x 4 SCANL r1 t x gt SCAN DRIVER IC KEY PCB DSP 42806M BLOCK DIAGRAM MP 2002 8 20 US POB P1014 DIGITAL PCB Y_ERASE QY20723 VIDEO POB lt Clock Oscilator 50 MHz 616 EPROM SDRAM 27 10241 K45643232 x 21 INVERSE GAMMA WEIGHT PISO CONVERSION MEMORY TIMING CONTROL CONTROL APL DETECTION DATA MICOM INTERFACE INTERFACE A500K180 A500K270 T3 PLL Y _SUSTAIN HYBRID IC 50011 QY6 12 Y_RAMP_UP QY13 19 e a lt gt ADC CXA3516 P102 Y_SHELF SCAN QY172 P103 DC DC CONVERTER 173 processor DENTERLACER PW171 i VIDEO PROCESSOR SAA7118 AOS PUB KEY PCB LED PCB PA601 2 _ Crystal FLASH MEMORY 14 3 MHz 20 MHz 24 57 MHz 128 MHz 33 5 MHz Y_SUSTAIN HYBRID IC 50011 POWER PCB 3D COMB FILTER UPD64083 X_SHELF 0115720 Y_CONTROL Y_CONTROL T PCB CH m a JACK PCB 304 P303 s AV SWITCH 21511 CXA2069 P304A P303A 302 i oo a PCE 5 EA RE DATA DRIVER IC DATA DRIVER DATA DRIVER DATA DRIVER STV7610A 4 STV7610A x 4 STV7610A x 4 STV7610A x 41 DATA COF DATA COF DATA DATA COF 10
32. Is DVS DHS DCLK of Video PCB normal Does input suorce AV device operate N Is DVS DHS DCLK of Video PCB normal Y N Comi onfirm input 1 Check other PCBs DIGITAL X Y SUS CONNECTION 2 Reassemble or change PA603 Is input selection in used mode 2 When No VIDEO COMPOSITE S VHS Y Cb Cr signal on screen 1 Input PC or DTV signal and see if PC or DTV signals shown on screen If no signal then check TP DCLKB DHS DVS signal if DCLKB DHS DVS signal do not appear VIDEO PCB has a trouble 2 When Y Cb Cr input Check 16th pin of P502 Tek Provu ma WOLTAZGE 500 mW 4 Chi 4 TIME 26 0 um lic SEO 2008 49 COMPOSITE Input TP Vin check VOLTAGE 500 TIME 20 0 S VHS input Check 24th pin of P502 when COLOR BAR PATTERN 7 VOLTAGE 1 500 TA Chi 221 TIME 20 0 us 20006 If above s gnal do not appear JACK PCB has a trouble 3 TP DECOE Check If DECOE signal do not appear JACK PCB has a trouble When COMPOSITE NTSC 3 58MHz check COMB CCOMB as well 4 TP VVS VHS VCLK VPENI Check If VVS VHS VCLK VPENI signal do not appear JACK has a trouble 3 When 10801 720P 480P signal do not appear on screen 1 Input PC or VIDEO signal and see if PC or VIDEO signals shown on screen If no signal then check DCLKB DHS DVS If DCLKB D
33. OO ELECTRONICS LTD REFERENCE T 49500033 84 F _ 1111111111 ri bac ES 85d 2 5 q NUS D me E ME E ee VID ALVId MOVE 86 FIG lt 1 gt TOTAL RY 10 VOLUME for adjusting RAMP DOWN s slope CT T E VOLUME for adjusting RAMP e slope QYS Vscan 5 FIG 2 Y SUS amp SCAN lt FIGURE COLLECTION M FOWER gt Y SUS Vsus Vyer 15V _ for adjusting Vramp up DC Y53 Vramp up s RY VOLUME for adjusting FIGURE COLLECTION RUL VOLUME for adjusting Vx shelf Te SUS Y CONTROL P202 P2024 X SUS gt CONN RIGHT FIG 3 X SUS 88 FIGURE COLLECTION no ATL FYE ES M HANOd 50554 lt gt 054 MOVE ebe ELLE ii m d E 1 a SCH i EITA L 1 dx y 1 E eee HME AS AIS 594 CA STF o am aS OXGIA lt gt HAMOd AED MOVE DENM d og Ret 714 VIVO Ur aoa en dr A s E PS I 09 RS 09 lt oia wl lt gt OTGIA FIG lt 4 gt VIDEO JACK 89 AS TY IISI V e I AS HI
34. PCB Trouble Diagnosis table 3 FET Diode Tester Measure Value red black Location a DIODE DIODE MEASURE MEASURE TESTER After about Over 0 4V 3 sec OPEN OPEN Over 0 4V OPEN Over QY1 0 4V OPEN EN EN ERAS 8 68 Main PCB Trouble Diagnosis table 4 HIC Hybrid IC Diode Tester Measure Value 4 red black For the inside Y SUS PIN number starts from lower right when the PCB is attached to the SET and looked from the front For the inside X SUS PCb PIN number starts from upper left when the 15 attached to the SET and looked from the front 40 OUT_H 1 V_SUS 39 OUT_H 2 V_SUS 38 OUT_L 3 V_SUS 37 OUT_L 4 V_SUS 36 NC 5 35 POWER_GND 6 V_CC 34 POWER_GND 7 V_DD 33 POWER_GND 8 32 POWER_GND 9 SIG_GND 31 NC 10 SIG_GND 30 EL1 11 NC 29 EL 12 IN1 28 NC 11 801 27 12 INS 26 13 NC 25 EC2 14 1N3 24 EC2 15 SD2 23 NC 16 NC 22 EL2 17 4 21 EL2 13 SD3 PIN9 10 and PIN 17 20 32 35 shorted GND PIN24 27 are shorted to each other PIN37 40 are shorted to each other 69 DIODE TESTER 9 10 gt xO 21 22 NO LA 24 25 26 27 NO 29 30 LA 32 35 LA ON 37 38 39 40 Main PCB Trouble Diagnosis DIODE TESTER MEASURE MEASURE E SOPA KSV DLTKD Over 12V NC
35. S Y CORD PEVDMSD035 PEJAMSD035 PEDGMSD035 PEXSMSD035 PEYSMSD035 PES1MSD035 PES2MSD035 PELUMSD035 PERUMSD035 4950M01110 4950707008 4950707009 4950711008 4950711007 4950712008 4950709013 4950730002 4950750006 4950750006 4950706024 4950710013 4950705012 4950706025 4950705013 4950740001 4950704024 4951800900 4951801000 4953401900 4856813100 4956801200 4956800100 4956801100 5PZCAT3035 5PZCAT3035 003401012 7063401211 7063401211 003401012 008300811 7063401211 7178301011 7178301011 4955400200 4957300400 94 ASS Y DESCRIPTION PCB VIDEO MANUAL AS PCB JACK MANUAL AS PCB DIGITAL MANUAL A PCB X SUS MANUAL AS Y SUS MANUAL AS PCB SCAN UP AS PCB SCAN DOWN AS PCB LEFT MANUAL AS PCB RIGHT MANUAL AS SP 3000 YMW025 07R YMTO25R ULW 490 12505 07 12505 15 60 12505WR 11 12505TS 60 YMW025 11R YMT025R 360 12505WR 12 12505TS 80 YMW025 09R YM1T025R ULW 180 RX30PX160MMX0 5X 0 05X0 3 5 100 0 5 0 05 0 3 KX50PX100MMX0 5X 0 05X0 3 12505WR 06 12505TS 30 YMH025 10R YMT025R ULW 450 YMH025 05R YMT025R ULW 440 12505HS 06 12505TS ULW 750 12505HS 05 12505TS ULW 920 DF13 40DS 1 25C DF13 2630SCF ULW 150 YMH025 04R YMT025R ULW 420 DSP 4280 DSP 4280 SECC 10 6 DA 140 FTH 3 01 STL J 600 6M 01 KSK 3140 RT ZCAT3035 1330 ZCAT3035 1330 BIN 4X10 MFZN BK BIN 4X12 SW BIN 4X12 SW BIN 4X10 MFZN BK WAS 3X8 MFZN M C BIN 4X12 MFZN SW TT2 WAS 3X10 MFZN TT
36. S OHGIA HAMOd AST PP A 9109 HAMOd a E n Pu A STF MOVE HHAMOd SOSA 5115 lt HHMOd FIG lt 5 gt POWER 90 FIGURE COLLECTION ALI RR AA umm 1 d m E La 91 FIG 6 INLET FIGURE COLLECTION FIG lt 7 gt LEFT UP 92 z gt l AAA __ _ u MM lt gt OSCIA T I d JE 7 m ALY Id A 93 FIG lt 8 gt LEFT DOWN COLLECTION FIGUR 2716 1 pu ama dev H Fx dure 1 m Sur FIG lt 9 gt RIGHT UP 94 FIGURE COLLECTION FIG lt 10 gt RIGHT DOWN 95 FIGURE COLLECTION a n Ba E A ral a T DER i a xxm SUE io eos A cra OIG NM E d 11 DI FIG lt 11 gt WITHOUT JACK 96
37. SOUND PROCESSOR MSP 3420 PWR X CONTROL P202A CONN RIGHT PCB DATA DRIVER IC STV7610A x 4 DATA COF DATA DRIVER IC 5 7610 x 41 DATA DATA DRIVER STV7610A x 4 DATA COF SWITCH rt LED PCB 4 Description Of Each BLOCK 4 1 A V BLOCK 4 1 1 A V BLOCK DIAGRAM E DEN NC 5 RESET DVS O V_MUTE DHS v MUTE DVS 5 RESET DHS IC600 PW171 VCLK VPEN1 to DIGITAL GBLKSLP O PS GHSFOUT GCOAST GREF O GCLK O 500 GHS CXA3516 to PWR e GVS to PWR 401 5 7118 400 464083 2 GND to PWR MSP RST YO ID JACK GND GND S MUTE GND GND 706 704 700 2151 2069 MSP3420 Description Of Each BLOCK 4 1 2 VIDEO PCB PROCESS Various Signal PC COMPONENT COMPOSITE to produce 24BIT DIGITAL output 1 IC and TP 1 IC400 UPD64083 Using 3D COMBFILTER to separate COMPOSITE signal to Brightness S gnal Y and Color S gnal C Input COLOR BAR PATTERN A YCOMP Brightness Signal Y VOLTAGE 500 m20 0us A Chi 7 2 21 V TIME 20 0 us i 659 200us B Color Signal VOLTAGE 500 20 A Chi TIME 20 0 un Bc 0 00000 Ss 2 ICA01 SAA7118E Receive NTSC SECAM PAL VIDEO by COMPOSITE V S VHS Y C COMPONENT Y
38. STAIN ERL sust CURRENT CELL DISCHARCE DISPLACEMENT DISCHARGE URRENT CURRENT LESONANCE COIL L C PANEL Vsus 2 CAPACITANCE 1 LESONANCE FREQUENCY f 2 V Description Of Each BLOCK 4 2 5 Y SUS amp SCAN PCB 1 Y_SUSTAIN PCB block diagram P101A P103A P102A Y_ _ Y Y Y 15V GND GND NC ERASE _SUS _SUS GND GND 5 GND GND SUSL SUSH GND 15V_Y2 Y _ramp_ _ down 2 Ramp_down Ramp_up S W S W DC DC EE SS P ele l E DN Y2 yea e Y scan Y_scan SCAN BOARD Y ELECTRODES Ea Description Of Each BLOCK 2 Y_SUSTAIN PCB Structure 3 O SUSTAIN BLOCK 505 505 L ER H ER L Energy Recovery Circuit O Structured with HIC RAMP_UP RAMP_DOWN waveform generating circuit e RAMP UP S W RAMP DOWN S W O Y SCAN 62V based on GND Applying Circuit e Y SHELF 70V based on GND Applying Circuit e Yer 166V Applying Circuit e RAMP UP Y SCAN VH DC DC converter circuit that generating Y SCAN GND s voltage O LOGIC Circuit that processes various waveform timing signal Power Supply Vsus Supplied from POWER MODULE 173V 15V Supplied from POWER MODULE and used for FET s driving power and input powers of 3 DC DC converter Also generates output voltage of each Y RAMP UP Y SCAN Y SHEI PO SCAN 5V Supplied from POWER MODULE through DIGITAL board Used for
39. SUM32 MFZN 73 GUIDE POSTA 12 SUM32 MFZN 7 POSTPCBD 4 SUM32 MFZN 71 POST PCB 4 SUM32 MFZN 70 POST PCBB 17 SUM32 MFZN 69 POST PCB A 29 SUM32 MFZN 68 MESH COVER BACK C 1 67 MESH COVER BACK B 1 66 MESH COVER BACK A 1 65 4957502900 COVER STAND HOLE 2 SECC t0 5 64 4952600200 HANDLE SET 4 A6061 63 4955201400 PLATE VENTILATION 7 SECC 10 5 62 4952102300 COVER POWER 1 FR HIPS 61 7003401012 SCREW MACHINE 26 M BIN 4X10 MFZN BK 60 7178301012 SCREW TAPTITE 10 TT2 WAS 3X10 MFZN BK 59 4953401700 BRACKET PROTECTION 1 SECC 2 58 SHIELDRON C3 2 5 0X1 0DX193 Cu Ni 57 SHIELDRON C2 1 5 0X1 0DX1021 Cu Ni 56 SHIELDRON C1 2 5 0X1 0DX617 Cu Ni 55 4952102100 COVER BACK 1 A5052 11 2 54 SHIELDRON T3 2 5 0X1 0DX98 Cu Ni 53 SHIELDRON T2 1 5 0X1 0DX370 Cu Ni 52 SHIELDRON T1 1 5 0 1 00 436 Cu Ni 51 INSULATION TERMINAL 1 PET 10 2 50 4953600900 PLATE TERMINAL 1 SECC 10 6 49 4957502700 CASE JACK 1 5052 10 5 48 PEJAMSDO1 PCB JACK 1 47 4953401400 BRACKET SUPPORTL 1 ADC 10 46 4953401500 BRACKET SUPPORTR 1 ADC 10 45 4955201300 PLATE SUPPORT 2 SECC 11 0 44 7063401211 SCREW SPRING MACHINE 10 MBIN 4X12 MFZN 43 SCREW MACHINE 16 FLT 4X10 MFZN 42 4953500800 HOLDER INSULATION B 17 HIPS 41 4953500700 HOLDER INSULATION A 17 HIPS 40 4953803600 FRAME SUPPORT 2 ADC 10 39 TAPE GLASS B 2 VHB4950 t1 1 38 TAPE GLASS A 8 VHB4950 11 1 37 4957900700 THERMAL SHEET 3 9894FR 280X500Xt1 1 36 7541321000 RIVET NAIL 8 PAN 3X40 35 4953803500 FRAME BACK B 2 A6061 t2 0 34 49538
40. Trouble is more likely caused by BAD CONNECTOR CONNECTION due to dust or extraneous material Therefore make sure to check the related CONNECTOR CONNECTION lt Symptom 1 gt Vertical line BLACK or abnormal data group or single occur refer to Trouble Symptom Picture lt 1 gt lt 4 gt lt Symptom 2 gt For particular vertical BLOCK Discharge luminescence is unstable or not operating refer to Trouble Symptom Picture lt 2 gt lt 4 gt lt Symptom 3 gt POWER SHUT DOWN occur refer to Service Manual 10 3 4 Symptoms of POWER PCB Trouble lt Symptom 1 gt Not even weak discharge luminescence shows on screen lt Symptom 2 gt Discharge luminescence on screen is unstable refer to Trouble Symptom Picture lt 8 gt lt Symptom 3 gt Set 15 producing unusual noise 74 Main PCB Trouble Diagnosis lt Symptom 4 gt POWER SHUT DOWN occur refer to Service Manual 10 3 5 Symptoms of DIGITAL PCB Trouble Note DIGITAL PCB produces CONTROL SIGNALS for normal operation of Driving BLOCK X SUS Y SUS SCAN DATA Trouble of this PCB could generate further damage to Driving BLOCK circuit In other words if Driving BLOCK CONTROL SIGNALs abnormal all kinds of trouble symptoms of PCBs within Driving BLOCK could occur lt Symptom 1 gt Not even weak discharge luminescence shows on screen lt Symptom 2 gt Discharge luminescence on screen 1s unstable refer to Trouble Symptom Picture lt 8 gt lt S
41. VTO HAL 107 H FIG lt 18 gt FRONT MASK INSIDE 103 FIGURE COLLECTION FIG lt 19 gt BACK COVER 104 Wa pi NH Pak 8 88 MN FIG lt 20 gt POWER ADJUSTING POINTS 105 FIG lt 21 gt POWER HIGH VOLTAGE SWITCH 106 FIGURE COLLECTION FIG lt 22 gt HOW TO ADJUST VOLTAGE 107 FIGURE COLLECTION Geconi M 7 FIG lt 23 gt Y SUS amp SCAN PCB DIODE TEST 108 AO FIG lt 24 gt SCANH PCB DIODE TEST 109 FIGURE COLLECTION at FIG lt 25 gt SCANL PCB DIODE TEST 110 FIGURE COLLECTION FIG lt 26 gt 5 STEP GRAY SCALE PATTERN 111 Trouble Symptom Picture lt 1 gt 112 Trouble Symptom Picture lt 2 gt 113 Trouble Sumpton Picture Trouble Symptom Picture lt 3 gt 114 Trouble Sumpton Picture Trouble Symptom Picture lt 4 gt 115 Trouble Symptom Picture lt 5 gt 116 Trouble Sumpton Picture Trouble Symptom Picture lt 6 gt 117 i 1 Trouble Symptom Picture lt 7 gt 118 Trouble Sumpton Picture 4 Jer ee 7 gen 5 Trouble Symptom Picture lt 8 gt 119 Trouble Symptom Picture lt 9 gt 120 Trouble Symptom Picture lt 10 gt
42. ake sure to check Connector Power Connector Signal Connector s Connection e Check Panel s FPC and Connector PUI 6 s Connection O After replacing X_SUS PCB readjust Vshelf as Optimum adjusting Voltage Table located above VIDEO PCB O Make sure to check screw connection between X SUS PCB and Panel back plate When using scope to check signals GND terminal must be attached to HEAT SINK 64 Main PCB Trouble Diagnosis 9 4 Y SUS PCB Trouble Diagnosis 1 After detach SCAN PCB from Y_SUS PCB turn on the power 2 If turn on normally check SCAN PCB Detach just SCAN PCB from Y SUS PCB and perform DIODE TESTER measurement as below DIODE TESTER MEASURE DIODE TESTER MEASURE D Vss If SCAN PCB failure is still estimated after above DIODE TESTER measurement connect only one of SCANL and SCANH PCB to Y SUS PCB and set POWER PCB s condition to LOW Voltage After that perform DC VOLTAGE TESTER Measurement as following table NAME DIODE TESTER MEASURE DIODE TESTER MEASURE 0 8V ran Under 0 8V Over 39V 3 If SCAN PCB is normal and Power Shut Down happens then disconnect P101A and then turn on the power 4 If power turn on normally check Y SUS PCB 5 Disconnect P102A P103A Connectors 6 Check remaining voltage of PIOIA Current model contains Discharge Resistance for discharging High Voltage Vsus remaining in
43. cification ITEM 4 OPTICAL 4 1 SCREEN SIZE 4 2 ASPECT RATIO 4 3 NUMBER OF PIXELS 4 4 DISPLAY COLOR 4 5 PIXEL 4 6 PEAK LUMINANCE 4 7 CONTRAST RATIO 4 8 VIEWING ANGLE 5 USERCONTROL amp ACCESSORIES 5 1 CONTROL BUTTON SET 5 2 REMOTE CONTROL R V28 5 3 ACCESSORIES SPECIFICATION REMARK 42 106 DIAGONAL 16 9 853 H X480 V 16 77 Million Colors 8BIT per each R G B 1 08 H X1 08 V 300cd m WITH FILTER GLASS 3000 1 Over 160 degree VERTICAL HORIZONTAL AC POWER BUTTON PUSH PULL S W MENU SELECT UP DOWN LEFT RIGHT SOFT S W POWER INPUT SELECT DISPLAY ZOOM ZOOM MENU UP DOWN VOLUME FREEZE SCREEN MODE SOUND MODE SLEEP REMOCON CONTROLLER BATTERY INSTRUCTION MANUAL A V CABLE STAND WALL HANGER SPEAKER R L Product Specification 2 2 Available Input Signal 1 PC Resolution Remark Pa No 640350 20 1 5 GK 20 16 i i N 1 2 AF 1 MO VGA E i mn AA 720557 950 500x600 x 2 1 2 x 2 2x64 E 1024x768 9 886 88 9 EA 3 50 U 7 5 939 026 eme A 5 x 37 Ion 6 an 3 9 mn o mr 99 Dame 90 A 1 8 Product Specification Resolution Freq KHz 1280X1024 1600X1200 2 10801 60 Hz 20 60 Hz 480P 60 Hz 3 VIDEO PAL PAL M PAL N NTSC 5 4 43 SECAM Patt No 3 BLOCK DIAGRAM SCANH PCB SCAN DR
44. electrode sustaining voltage when writing DATA METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting TP DCUI6 electrode refer to FIG lt 6 1 gt FIG lt 3 gt and the following Figure Adjusting VOLUME refer to FIG lt 6 1 gt and FIG lt 3 gt Standard Voltage 158V This value could be different from the optimum adjusting voltage Optimum adjusting Voltage Stated the LABEL refer to FIG lt 1 gt 6 2 3 Adjusting Y SUS PCB Note 1 Factory adjusted optimum voltage 15 stated in the LABEL located above the VIDEO PCB refer to FIG lt 1 gt Note 2 After replacing Y SUS PCB adjust each voltage to the optimum adjust voltage as stated the LABEL Note 3 Screen Condition After entering SERVICE MODE run TEST PATTERN FULL WHITE refer to 5 Service Mode Note 4 Contact MULTIMETER s on the CHASSIS GROUND and on adjusting TP refer to FIG lt 22 gt Note 5 Because adjusting while the SET 15 18 operation be cautious not to touch other parts than adjusting TP with MULTIMETER s TIP Make sure to use Plastic adjusting tool to adjust VOLUME refer to FIG lt 22 gt 39 Adjusting Method 1 Ramp Up Slope Adjustment Adjusting VOLUME 2 refer to FIG lt 6 2 gt and FIG lt 2 gt Adjusting Method Adjust VOLUME direction as shown below 2 Ramp Down Slope Adjustment Adjusting VOLUME 10 refer to FIG lt 6 2 gt and FIG lt 2 gt Adjusting Method
45. entative Symptoms caused by bad CONNECTION between PCBs Note Dust or extraneous materials most likely to cause bad CONNECTION Most of this case it can be solved if using soft brush AIR FRESHER or breath to clean dust or extraneous materials or reassemblling the Connector VIDEO DIGITAL P603 PA603 215 Main PCB Trouble Diagnosis Possible Symptoms when VIDEO or DIGITAL PCB has a trouble 2 DIGITAL Y SUS Y CONTROL P102 P102A P103 Possible Symptoms when Y SUS PCB or SCAN PCB has a trouble 3 DIGITAL gt CONN LEFT P304 P304A Possible Symptoms when DATA COF Ist 3rd PAD from left or CONN LEFT PCB has a trouble refer to Trouble Symptom Picture lt 2 gt lt 4 gt 4 DIGITAL gt CONN RIGHT P302 P302A P303 P303A Possible Symptoms when DATA COF 4th 7th PAD from left or CONN RIGHT PCB has a trouble refer to Trouble Symptom Picture 1 Possible Symptoms when X SUS PCB has a trouble P302 P302A CONNECTION contains X SUS PCB CONTROL SIGNAL as well as DATA So 1f this CONNECTION is bad X SUS PCB might not operate 5 CONN RIGHT X SUS X CONTROL P202 P202A Possible Symptoms when X SUS PCB has a trouble Only weak discharge luminescence shows on screen But No Data ison screen P202 P202A CONNECTION contains Vadd power source as well as X CONTROL So if this CONNECTION is bad the problem could be caused by incorrec
46. four plastic support 7 DIGITAL PCB refer to FIG lt 11 gt FIG lt 12 gt Detach JACK PCB Detach VIDEO PCB Detach Connecting Connector P102 P103 46 SET Disassemble Assemble Method P302 P304 603 Detach iron support Unscrew screws SI CONN LEFT PCB refer to FIG lt 6 gt FIG lt 8 gt FIG lt 11 gt Detach STAND from PDP SET Lay PDP SET in a stable place Detach JACK PCB gt Detach Stand holding iron structures LEFT amp RIGHT Detach Connecting Connector PC5 PC7 P304A PCOSA gt Unscrew screws 9 CONN RIGHT PCB refer to FIG lt 6 gt FIG lt 8 gt FIG lt 11 gt Detach STAND from PDP SET Lay PDP SET in a stable place Detach JACK gt Detach Stand holding iron structures LEFT amp RIGHT Detach Connecting Connector PC1 PC4 P202 P302A P303A PCSA1 Unscrew screws 10 KEY PCB refer to FIG lt 8 gt Unscrew screws 11 AC SWITCH amp LED PCB refer to FIG lt 10 gt FIG lt 13 gt Warning Careful not to break Panel Gas Exhaust Tube Unscrew screws 12 Assembling procedure is in the reversing sequence of the disassembling procedure 8 3 FRONT MASK Disassemble Assemble Method 8 3 1 Assembling Disassembling with STAND attached 1 Detach BACK COVER refer to FIG lt 19 gt 2 With BACK COVER detached screw STAND holding screws Refer to FIG lt 6 gt 3 Unscrew the lower 2 screws of 3 screws located at the TERMINAL PLATE Refer to FIG lt 19 gt 4 Detac
47. h KEY PCB 5 Detach AC SWITCH amp LED PCB 6 Unscrew 4 FRONT MASK holding screws located at each corner of PANEL BACK PLATE Refer to FIG lt 7 gt FIG lt 10 gt FIG lt 13 gt Note 1 At least two people must work together when assembling disassembling FRONT MASK Note 2 Unscrewing these 4 screws separate FRONT MASK and PANEL completely Therefore one person must be holding the FRONT MASK while unscrewing 7 Carefully separate FRONT MASK to the perpendicular direction from PANEL BACK PLATE Plastic guides located at the upper corners left and right of FRONT MASK is used for proper connection to PANEL BACK PLATE Refer to FIG lt 7 gt FIG lt 10 gt FIG lt 13 gt 8 Assembling procedure is in the reversing sequence of disassembling procedure AT SET Disassemble Assemble Method Note Be cautious of FILTER GLASS not being stained with dust or extraneous material Clean FILTER GLASS with a clean and soft cloth before assembling 8 3 2 Assembling Disassembling procedures without STAND attached 1 Lay the Set on soft and safe place 2 Detach BACK COVER 3 Unscrew the lower 2 screws of 3 screws located at the TERMINAL PLATE Refer to FIG lt 19 gt 4 Detach KEY PCB 5 Detach SWITCH amp LED PCB 6 Unscrew 4 FRONT MASK holding screws located at each corner of PANEL BACK PLATE Note 1 At least two people must work together when assembling disassembling FRONT MASK Note 2 Unscrewing these 4 screws separate FRONT MASK a
48. h and 7th pin from the top Normal 1 3 2V 3 6V 3 Check the POWER related TP 2 5V 3 3V 1 2 5V 1 6 1 2 5V Normal if 2 3V 2 7V 2 3 3 1 2 Normal if 3 2V 3 6V 3 5V_1 6 Normal if 4 8V 5 2V 4 Check RESET V_MUTE 1 S_RESET Normal if 3 2V 3 6V 2 V_MUTE Normal if 3 2V 3 6V 5 Normal output waveform for main signal point when using Digital Oscilloscope refer to below pictures 1 DVS p A LL LL TTET CI E li 2 8 EE e L 18 WHF EE En ER n apun B V ER 55 Main PCB Trouble Diagnosis 2 DHS T em Im mi L L L umm G em KE 5 em 3 DEN 56 Main PCB Trouble Diagnosis 4 DCLK 5 CLK50M Po EH EH L ED E L L u Pm ER wi a A ER wi Dar ei en D elt ei en D 57 B Trouble Diagnosis PC il LE LULILLI i nid nian n L e BHHB UL i e HAHH 335 1 PPD C HHHH Fa ge 55 Main PCB Trouble Diagnosis 8 CLK480 L MA EHHH b loque m 9 SLCT L Fee das EHHH
49. n close the BACK COVER 4 All PCBs except CONN LEFT CONN RIGHT PCB can be replaced with STAND attached 5 When replacing CONN LEFT CONN RIGHT PCB separate STAND from PDP SET first and then lay the SET on a safe place to work 6 When working with SET standing be careful not to let screws or PCBs drop inside SET 7 Screws connector cables and other tools must be kept separately for reassemble 8 2 PCB Disassemble Assemble Method 1 SCANH L PCB refer to FIG lt 14 gt FIG lt 15 gt Unscrew screws After lightly lift the PCB from the screw boss disconnect from CONNECTOR 01 04 connected to Y SUS PCB Turn the PCB over and disconnect from PANEL CONNECTOR 501 508 2 Y SUS PCB refer to FIG lt 2 gt Disconnect SCANH L PCB from Y SUS PCB Disconnect CONNECTOR P101A P103A Unscrew screws 3 X SUS PCB refer to FIG lt 3 gt Disconnect CONNECTOR P201A P202A Unscrew screws 4 POWER PCB refer to FIG lt 5 gt Disconnect CONNECTOR P1 6 Unscrew screws 5 JACK PCB refer to FIG lt 5 gt FIG lt 19 gt Disconnect CONNECTOR PA6 Unscrew 2 screws connecting VIDEO PCB Shield Case Unscrew 3 screws in TERMINAL PLATE s external Disconnect JACK PCB CONNECTOR P502 connecting VIDEO PCB Disconnect INLET FILTER 6 VIDEO PCB refer to FIG lt 4 gt Disconnect Connecting Connector PA4 PA5 P601 P603 Disconnect JACK PCB separate from
50. nd PANEL completely Therefore one person must be holding the FRONT MASK while unscrewing 7 Lift Iron handles attached to the each corners of PANEL BACK PLATE perpendicularly by two workers and put it where clean and safe 8 4 FILTER GLASS Disassemble Assemble Method refer to FIG lt 18 gt 1 Separate FRONT MASK from the Set 2 Put the FRONT MASK down where safe for work 3 Unscrew 4 Iron structure s screws LEFT RIGHT UP DOWN holding FILTER GLASS Note There are two kinds of screws so check the proper position 4 Carefully separate FILTER GLASS from FRONT MASK 5 Assembling procedure is in the reversing sequence of disassembling procedure Note 1 Check front and back of FILTER GLASS Make sure front is facing FRONT MASK s external view Note 2 Be cautious of FILTER GLASS not being stained with dust or extraneous material Clean FILTER GLASS with a clean and soft cloth before assembling 48 9 Main PCB Trouble Diagnosis 9 1 VIDEO amp JACK PCB Trouble Diagnosis 1 Common checking process when No signal or No raster Y N 1 confirm Ac connection 2 confirm Power S W ON Is there a weak discharge on the sereen Does No signal screen appear 3 Check other PCBs Is P603 correctly connected Check PA603 N Exchange Video PCB Check the connection of Is the signal input Jack correctly connected Jack PDP or AV device
51. o discharge remaining voltage Under 5 volt 2 Vadd 68V Voltage CHECK When keeping above 10 volt Using not less than 1K ohm 5 Watt resistance to discharge remaining voltage Under 5 volt 5 Check the Connectors Connection 6 If no fault detected from above tests do the following 1 Use DIODE TESTER reffering to the following Table 1 4 2 abnormal components CHECK then replace X SUS 3 If NORMAL Check the Connectors Connection again 62 Main PCB Trouble Diagnosis Table 1 Diode Tester Measure Value of PA7 5 Each Terminal red black NAME DIODE TESTER MEASURE DIODE TESTER MEASURE 173V Open EE Table 2 Diode Tester Measure Value of P202A s Each Terminal red black Terminal Shape Top view components side P202A 123456 8 9101112 PIN 6 7 10 11 15 GND 66 MEASURE w TESTER MEASURE about 15 sec Over 0 4V Over 1 6V mama 7 9 _ om om 63 Main PCB Trouble Diagnosis Table 3 FET Diode Tester Measure Value red black NAME DIODE TESTER MEASURE DIODE TESTER MEASURE t 5 0019 0020 2 Over 0 5V table 4 When HIC Diode test do as the method equal to Y SUSPCB Check refer to 9 4 Note after X_SUS PCB Repair O Make sure to check power module s high voltage Vsus Vadd If remaining voltage detected use resistance to discharge them O M
52. ot match connectors will not fit When having problem in plugging the connectors make sure to check their kind position and direction 2 Product Specification 2 1 PRODUCT SPECIFICATION ITEM REMARK 1 GENERAL 1 1 MODEL NO DSP 4280GM G W S 1 2 CHASSIS NO SP 115 1 3 SCREEN SIZE 42 16 9 1 4 COUNTRY WORLD WIDE 1 5 RESOLUTION 853 H X 480 V 1 6 REMOCON TYPE R V28A E 1 7 SAFETY STANDARD 2 MECHANICAL 2 1 APPEARANCE UL C UL CE 55 CE CLASS K mark 1 WITHOUT STAND WxHxD 1 039 x 628 x 80 mm 2 WITH STAND WxHxD 1 039 x 725 x 320 mm 3 CARTON BOX WxHxD 1 256 x 800 x 327 mm 2 2 WEIGHT 1 WITHOUT STAND 29 9 Kg 2 WITH STAND 36 8 Kg 3 ELECTRICAL 3 1 VIDEO INPUT COMPOSITE NTSC PAL SECAM DAT MIN NTSC4 43 amp S VHS 50 60Hz 2 sets 1080 1 720P 480P 4801 Y Pb Cb Pr Cr COMPONENT SIGNAL 2 sets VGA UXGA 15 PIN D SUB 1 sets 2 sets for VIDEO 2 sets for DTV DVD 1 set for PC 3 2 DTV DVD INPUT 3 3 PC INPUT 3 4 SOUND INPUT 3 4 SPEAKER OUTPUT SW R 8W L 3 5 POWER REQUIREMENT AC 100V 240V 50 60Hz 3 6 POWER CONSUMPTION 320W 3 8 RS 232 CONTROL RS 232 Communication for SOFTWARE UPGRADE 3 9 FUNCTION SCALING PC H V SIZE and POSITION Adjusting VIDEO DTV DVD NOMAL 16 9 PANORAMA ENLARGE LB ENLARGE LBS 2 ZOOM 20 Scale ZOOMING amp PANING 3 OSD Support 11 Languages 4 OTHERS STILL SLEEP MODE SOUND MODE Product Spe
53. ough you turn the SET OFF again Remaining Voltage still exists the POWER PCB Therefore assemble the connectors several minutes after Or check the Remaining Voltage Vsus Vadd by multimeter If Vsus is less 10V connect connectors Connecting connectors with the Remaining Voltage Vsus Vadd over 10V could generate sparks and be dangerous to Operators or SET 2 When Screen Discharge luminescence is abnormal lt 1 gt Definition of Abnormal Screen Discharge luminescence In Entire or part of screen irregular and unstable Discharge arises Refer to Trouble Symptom Picture lt 8 gt This symptoms are divided into No Discharge and Wrong Discharge No Discharge Pixels which should discharge do not emit light When WHITE PATTERN is displayed one of RED GREEN BLUE does not emit light so CYAN GREEN BLUE MAGENTA RED BLUE or YELLOW RED GREEN shows on some part of the screen Wrong Discharge Pixels which should not discharge emit light When single color like RED GREEN BLUE pattern is displayed CYAN GREEN BLUE MAGENTA RED BLUE or YELLOW RED GREEN shows on some part of the screen If No Discharge or Wrong Discharge is severe it can be easily detected when any moving image is displayed But if it is not severe it can be detected only when certain particular 177 Main PCB Trouble Diagnosis images are displayed lt 2 gt PCB Check Priority Left to Right X SUS Y SUS SC
54. put Data which is so called APL Average Picture Level and give APL to Timing Controller Block in order to control Power Consumption of PDP Set 24 Description Of Each BLOCK 4 2 4 X SUS PCB 1 X_SUSTAIN PCB block diagram P201A P202A X X X X X 15V GND GND GND GND GND NC Vsus Vsus NC GND GND HIGH SHELF GND GND _ERL_ERH _SUSL_SUSH 5V 000000000000 I 8 Ee AAA A shelf X_ sustain X ELECTRODES 2 Structure of X SUSTAIN PCB eX SUSTAIN BLOCK SUS H SUS L ER L Energy Recovery Circuit HIC Structured e Vshelf Generating Circuit From Vsus 173V to X HIGHT 163V voltage generating circuit 15V to X SHELF 5V voltage generating circuit Control Voltage by Variable Resistor RUI O LOGIC Circuit that processes various waveform timing signal 25 3 Power Supply Description Of Each BLOCK Vsus Supplied by POWER MODULE Supplies X SUS as well as generates X HIGHT voltage 173V 15V Supplied by POWER MODULE Supplies FET driving power as well as generates X SHELF voltage 5V SV Supplied through CONNECTION board from DIGITAL board Used for LOGIC IC Power 4 Signal X SUSTAIN 505 H SUS L ER H ER L Supplied from P202A X SHELF X N SHELF X HIGHT Supplied from P202A 5 SUSTAIN BLOCK SUSTAIN BLOCK v CL ENERGY RECOVERY 26 SU
55. r pins Check whether cables and FPC are correctly connected Check the chip resistance four parallel connected 47 ohm located left and right of each 1 7 of CONN LEFT RIGHT to see 1 open short circuit If all above are normal unscrew DATA and observe DIODE TESTER Check 5 8 If over 0 4V Normal C 1 4 If over 0 45V Normal 71 Main PCB Trouble Diagnosis 9 6 POWER PCB Trouble Diagnosis Although X SUS Y SUS SCAN DATA are checked but still the set does not operate and then check if the following Power 5 Trouble Symptoms appear After unplugging X SUS Y SUS PCB s Power Connectors P101A P201A and checking remaining voltage there still exist several tens of remaining voltage When output condition of Power Module 15 set to LOW Voltage output voltage table lists 4 10 are NOT normal Or when set to HIGH Voltage output voltage table list 1 3 are NOT normal Refer to 4 3 2 When output condition of Power Module 15 set to LOW Voltage output voltage table lists 4 10 are normal But when set to HIGH Voltage output voltage table list 1 3 are NOT normal Refer to 4 3 2 After turn SET on with Remote Controller when output condition of Power Module 15 set to HIGH Voltage the LED turn Green but the Power Shut Down happens after 2 3 seconds If high voltage Vsus Vyer measured from Power is different from
56. roblematic SCAN s SCANH PCB if the Block Horizontal Line exists at the upper part of the screen otherwise SCANL PCB connector 501 508 01 4 condition Secondly check if there no dust bits of iron or any other extraneous material between the connectors Thirdly reassemble and check 1f the problem is solved If the problem still exits try to replace problematic SCAN PCB 4 When weak Discharge exists on screen but OSD screen can not be seen lt 1 gt Definition of this symptom When the set was turned on screen 15 BLACK but Weak Discharge luminescence exists When OSD does not show on screen and the set does not respond to remote controller or KEY panel any button lt 2 gt PCB CHECK PRIORITY VIDEO PCB lt 3 gt Trouble Repairing Procedure H no problem in Connection VIDEO DIGITAL replace VIDEO PCB 79 Main PCB Trouble Diagnosis PWR OFF BACK COVER OPEN POWER PCB s HIGH VOLTAGE SWITCH OFF refer to FIG lt 21 gt PWR ON PWR ON with Remote Controller SHUT DOWN NO occur YES LOW VOLTAGE part is N PCB check priority DIGITAL gt VIDEO gt POWER HIGH VOLTAGE part is N G PCB check priority X SUS gt Y SUS gt SCAN Trouble Diagnosis in order shown as FIG lt 10 2 gt Trouble Diagnosis in order shown as FIG lt 10 2 gt FIG 10 1 Trouble Diagnosis Flow when SHUT DOWN occurs 80 Main PCB
57. side the POWER PCB Therefore when dozen or more remaining voltage 15 measured t could be POWER PCB failure 65 Main PCB Trouble Diagnosis 1 Vsus 173V Voltage CHECK When keeping above 10 volt Using not less than 1 K ohm 5 Watt resistance to discharge remaining voltage Under 3 volt 2 68V Voltage CHECK When keeping above 10 volt Using not less than 1 K ohm 5 Watt resistance to discharge remaining voltage Under 3 volt 7 Check the Connectors Connection 8 If no fault detected from above tests do the following 1 Use DIODE TESTER reffering to the following Table 1 4 2 abnormal components CHECK then replace Y SUS PCB 3 If NORMAL Check Connectors Connection again Table 1 Diode Tester Measure Value of P101A s Each Terminal red black NAME DIODE TESTER MEASURE DIODE TESTER MEASURE 1 170V After about 10 Over 0 7V 2 163V After about 10 geg Over 0 5V Over 0 4V 66 Main PCB Trouble Diagnosis Table 2 Diode Tester Measure Value of P102A and P103A s Each Terminal red black Terminal Shape Top view components side P103A P102A 1234567891011 1234567 enr P103A TESTER MEASURE MEASURE P102A 5 w L TESTER MEASURE MEASURE Over 1 9V Over 0 8V IT NY Ny ra Over 1 9V GND Over 0 8V Over 1 9V Over 0 8V Over 1 9V Over 0 8V 67 Main
58. t Sustain Pulse METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting TP TP3 refer to FIG lt 20 gt Adjusting VOLUME RV501 refer to FIG lt 20 gt Standard Voltage 166V This value could be different from the optimum adjusting voltage Optimum adjusting Voltage Stated in the LABEL refer to FIG lt 1 gt 3 Vapp ADDRESS voltage DATA Input Voltage METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting TP TP2 refer to FIG lt 20 gt Adjusting VOLUME RV300 refer to FIG lt 20 gt Standard Voltage 72V This value could be different from the optimum adjusting voltage Optimum adjusting Voltage Stated in the LABEL refer to FIG lt 1 gt 6 2 2 Adjusting X SUS PCB 38 Adjusting Method Note 1 Factory adjusted optimum voltage 15 stated LABEL above the VIDEO PCB refer to FIG lt 1 gt Note 2 After replacing X SUS PCB adjust each voltage to the optimum adjusting voltage as stated in the LABEL Note 3 Screen Condition After entering SERVICE MODE run TEST PATTERN FULL WHITE refer to 5 Service Mode Note 4 Contact MULTIMETER s on CHASSIS GROUND and TIP on the adjusting TP refer to FIG lt 22 gt Note 5 Because adjusting while the SET 15 18 operation be cautious not to touch other parts than adjusting TP with MULTIMETER 5 TIP Make sure to use Plastic adjusting tool to adjust VOLUME refer to FIG lt 22 gt 1 Vx shelf x shelf Voltage X
59. t WHITE BALANCE additionally The set up can be done using the recorded values 1 SUB Set up BRIGHT standard value of PW171 2 SUB CONT Set up CONTRST standard value of PW171 3 BIAS R Set up RED BIAS value during WHITE BALANCE 4 BIAS G Set up GREEN BIAS value during WHITE BALANCE 5 BIAS 8 Set up BLUE BIAS value during WHITE BALANCE 6 GAIN R Set up RED GAIN value during WHITE BALANCE 7 GAIN Set up GREEN GAIN value during WHITE BALANCE 8 GAIN 8 Set up BLUE GAIN value during WHITE BALANCE 2 SAATIIS Note This article 15 not for adjustment after replacement of VIDEO PCB Therefore do not change initial values 1 SUB Set up BRIGHT standard value of SAA7118 2 SUB CONT Set up CONTRAST standard value of SAA7118 3 SUB CLR Set up COLOR standard value of 5 7118 4 SUB TNT Set up TINT standard value of SAA7118 5 SUB SRP Set up SHARPNESS standard value of SAA7118 3 DPTV Note This article 15 not for adjustment after replacement of VIDEO PCB Therefore do not change initial values 1 SUB BRT Set up BRIGHT standard value of DPTV MVS 2 SUB CONT Set up CONTRAST standard value of DPTV MVS 34 SERVICE MODE 4 516 Note This article 1s not for adjustment after replacement of VIDEO PCB Therefore do not change initial values 1 SUB CONT Set up CONTRAST standard value of CXA 3516 2 Cb OFFSET Set up BLACK LEVEL of Cb CHANNEL 3 Cr OFFSET Set up
60. t power supply to DATA COF 6 CONN LEFT RIGHT DATA COF Z_DATA CONTROL PC1 7 Possible Symptoms when DATA COF has a trouble refer to Trouble Symptom Picture lt 1 gt lt 4 gt 76 Main PCB Trouble Diagnosis 10 3 Trouble Diagnosis and Repairing Method for Representative Symptoms 1 When POWER SHUT DOWN occurs lt 1 gt Definition of SHUT DOWN When LED Color is Green can t hear POWER operating sound Red STAND BY Green Operating When Turn OFF and turn ON AC SWITCH again and turn Remote Control POWER ON POWER RELAY do not operate normally and POWER operating sound can not be detected lt 2 gt PCB Check Priority Left to Right POWER X SUS Y SUS SCANL H DATA DIGITAL VIDEO CONN LEFT RIGHT lt 3 gt Trouble Repairing Procedure As shown in FIG lt 10 1 gt first check which of LOW VOLTAGE part or HIGH VOLTAGE part has a trouble If VOLTAGE part is broken is checked as shown FIG lt 10 2 gt diagnose the SET and then replace the broken PCB If HIGH VOLTAGE part is broken is checked as shown in FIG lt 10 3 gt diagnose the SET and then replace the broken PCB lt Note 1 gt When disconnecting connecting connectors you must turn OFF the AC power and check the direction position of them before working lt Note 2 gt If you turn the SET ON with X SUS PCB and Y SUS 5 POWER CONNECTORS P101A P201A disconnected alth
61. ting Points 42 7 SOFTWARE UPGRADE Method 1 Connect the JACK PCB to the Video PCB 2 Connect 9 PIN serial cable to the computer s serial port 3 Connect serial cable 5 opposite end to Jack 5 RS 232C port 4 Run PC 5 Flashupgrader exe and then push Next N gt button ira Wizard Thi wizard wil upgrade the firmware in devices mal contain the 8 ImagePmces sor Please contact lechnical suppoet T uou experience problems while using Pig wizard he device you wil we d peomoleid lo rale the Tiemmware file vou weld Hee To select the firmware click 1958 2000 5 Select current Upgrade file Copy files sent by research center to a folder you wish to copy Browse and Select pwSDK inf from the folder sEmUp Gon 8 Pa 1 Bomcndetink imi ri Sllmgboot ode inf 5 InitFlas her inf DS inf HS SEAT Firmware Files inf e Push Next N gt button BER select new firmware thal yeu would like install vr hardware ee E Dee en ila hawa the Only To continue click lt A ww a 6 Select as above and push Next N gt button Select Comm port and Boud rate and push Next N gt button
62. tion DIGITAL OSCILLOSCOPE could be used 7 Before assemble disassemble PCBs check to see if AC Switch is OFF 8 After replacing X SUS Y SUS POWER VIDEO PCB the PCB needs extra adjustment Refer to Service Manual 6 Adjusting Method 9 After the set 15 repaired leave BACK COVER open for followings Do HEATRUN for at least 30 minutes by inputting SERVICE MODE s TEST PATTERN Refer to Service Manual 5 Service Mode FULL WHITE Check the screen condition and basic functions remote control operation etc 10 After BACK COVER is closed redo HEATRUN for at least one hour by inputting FULL WHITE using SERVICE MODE 5 TEST PATTERN Check the screen condition and basic functions 10 2 Typical Symptoms of 5 Trouble or bad CONNECTION 1 Symptoms of X SUS or Y SUS PCB Trouble lt Symptom 1 gt Not even weak discharge luminescence shows on screen lt Symptom 2 gt Discharge luminescence on screen 1s unstable refer to Trouble Symptom Picture lt 8 gt lt Symptom 3 gt Set 15 producing unusual noise lt Symptom 4 gt POWER SHUT DOWN occur refer to Service Manual 10 3 2 Symptoms of SCAN PCB Trouble 7 Note 1 Note 2 TROUBLE SHOOTING SCAN PCB is divided into SCANH PCB drive upper screen and SCANL PCB drive lower screen Each SCAN PCB contains four 64 PIN Output SCAN DRIVER IC SCANH PCB drives upper 240 lines out of 480 total lines and SCANL PCB drives lower 240 lines Therefore if
63. trol Block Generate Address Control signals for SDRAM There are 2 SDRAMs 64M 32 bit SDRAM which store 1 Frame s R G B data in order of Weight respectively to process with real time 7 Data Interface Block R G B data ouput from SDRAM is stored by line in Data Interface Block These data is output in order matched by Data Driver IC Z Driver IC s input sequence Our PDP has 853 Data Lines per each R G B and need 853 3 2559 bit s storage To process with real time actually need 2559 2 5118 bit s storage 3 PDP Driving Timing Control 1 X SUS Driving Control Signal Block Generate Control Signals to drive X SUS PCB There are 6 Control Signals as follows X_SUSH X_SUSL X_ERH X_ERL X_HIGH X_NSHELF 2 Y SUS Drving Control Signal Block Generate Control Signals to drive Y SUS PCB amp Scan Drvier IC There are 12 Control Signals as follows Y_SUSH Y_SUSL Y_ERH Y_ERL Y_SC20_2 Y_SC20_3 Y_SC21_7 Y_SC21_9 Y BLK Y CLK Y SII Y_SI2 3 Z Driving Control Signal Block Generate Control Signals to drive DATA COF Z Driver IC There are 8 Control Signals as follows ZI_LCLKI Z1_CLK2 Z2 CLKI Z2 CLK2 STB Z2 Z2 SIb 93 4 Sub Control Signal Block Generate some Control Signals to control Data Interface Block and SDRAM Control Block There are 5 Control Signals as follows SUBF 480 OUT F_32SFT SLCT 5 Detection Block Detect the amount of in
64. ve 4 7 until color coordinate Is x20 280 y 0 290 Attach WHITE BALANCE METER s SENSOR to 100 Gray Scale part refer to FIG lt 26 gt Control SUB CONTRAST so that LUMINANCE is above or equal to 140 Cd m2 9 Enter MENU BUTTON and Exit SERVICE MODE e Adjusting Method 6 2 Adjusting Driving Voltage and Waveform 6 2 1 Adjusting POWER PCB Note 1 Factory adjusted optimum voltage 15 stated at the LABEL located above the VIDEO PCB refer to FIG lt 1 gt Note 2 After replacing POWER PCB adjust each voltage to optimum control voltage stated at the LABEL Note 3 Screen Condition Enter SERVICE MODE and run TEST PATTERN FULL WHITE refer to 5 Service Mode Note 4 Contact MULTIMETER s TIP on the CHASSIS GROUND and on the adjusting TP refer to FIG lt 22 gt Note 5 Because adjusting while the SET 15 18 operation be cautious not to touch other parts than adjusting TP with MULTIMETER s TIP Make sure to use Plastic adjusting tool to adjust VOLUME refer to FIG lt 22 gt 1 Vsus SUSTAIN Voltage Discharge Sustain Voltage METER used DIGITAL MULTIMETER DC Voltage Measure Mode Adjusting TP TPI refer to FIG lt 20 gt Adjusting VOLUME RV500 refer to FIG lt 20 gt Standard Voltage 173V This value could be different from the optimum adjusting voltage Optimum adjusting Voltage Stated the LABEL refer to FIG lt 1 gt 2 Vyer ERASE voltage Erase operation initial voltage of Las
65. well 7 INFOR Ej 1 VER Displaying Software s VERSION 8 RESET 1 EDID 2 LEVEL 1 RESET SERVICE MODE Condition s All Values 3 LEVEL 2 RESET SERVICE MODE s All Values except PW171 values 4 FACTORY RESET to factory shipping initialiaztion 36 6 Adjusting Method 6 1 Adjusting WHITE BALANCE 1 Input 5 STEP GRAY SCALE PATTERN to Video Input Terminal refer to FIG lt 26 gt 2 Set the SCREEN MODE to NORMAL 3 Enter SERVICE MODE by inputting remote controller s UP MUTE DISPLAY gt MUTE BUTTON and then select PW171 and check Default Values of SERVICE MODE Items refer to article 5 Service Mode 4 Attach WHITE BALANCE METER FACTORY USE METER CA 100 SENSOR to 80 Gray Scale part refer to FIG lt 26 gt 5 Adjust WHITE BALANCE by varying R G B GAIN Control R G B GAIN values so that the ranges are within Default Value 10 If deviate from the range classify the SET disqualified Set color coordinate to x 0 280 0 01 y 0 290 0 01 and color temperature to above or equal to 10 000 6 Attach WHITE BALANCE METER 5 SENSOR to 40 Gray Scale part refer to FIG lt 26 gt 7 Adjust WHITE BALANCE by varying R G B BIAS Control R G B BIAS values so that the ranges are within Default Value 5 If deviate from the range classify the SET disqualified Set color coordinate to x 0 280 0 01 y 0 290 0 01 8 Repeat abo
66. ymptom 3 gt Screen DATA 15 abnormal lt Symptom 4 gt POWER SHUT DOWN occur refer to Service Manual 10 3 6 Symptoms of VIDEO or JACK PCB Trouble lt Symptom 1 gt Only weak discharge luminescence shows on screen but No Data 1s on screen lt Symptom 2 gt Screen DATA is abnormal lt Symptom 3 gt Particular input signal Video PC or Component etc does not operate lt Symptom 4 gt No SOUND lt Symptom 5 gt The Set does not operate normally But after turn off AC Power 1f turn on again it operates normally again lt Symptom 6 gt Remote Control or KEY does not operate lt Symptom 7 gt POWER SHUT DOWN occur refer to Service Manual 10 3 7 Symptoms of CONN LEFT amp CONN RIGHT Note CONN LEFT amp CONN RIGHT PCB are to distribute Driving power 5V Vadd provided by POWER PCB and CONTROL SIGNAL DATA provided by DIGITAL PCB to each PCB X SUS Y SUS SCAN DATA This PCB contains simple components such as BUFFER IC resistors capacitor etc Therefore the trouble is most likely caused by bad CONNECTOR CONNECTION due to dust or extraneous material lt Symptom 1 gt Vertical line BLACK or abnormal data group or single occur refer to Trouble Symptom Picture lt 1 gt lt 4 gt lt Symptom 2 gt For particular vertical BLOCK Discharge luminescence is unstable or not operating refer to Trouble Symptom Picture 2 4 lt Symptom 3 gt All possible symptoms when X SUS Y SUS or SCAN PCB has a trouble 8 Repres

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