Service Manual - Michael Jay Lissner
Contents
1. ITEM DESCRIPTION UNIT 1 DMSKPO124 1F BEZEL ASS LY d 1 GMSKPO124 1F C BEZEL 1 1 2 REFLOO64 1F JLIGHT GUIDER 1 2 JKNBPO640 1F KNOB 3 DPWB11372 16 K FRONT BUTTON CONTROL BOARD 557 1 4 XEASD30P10000 SCREW FOR POWER PWB 3 5 510 0309 1 EMI BELT FOR COLOR FILTER amp UPPER ANGLE 2 6 1ANGQ0014 1P ANGLE FOR COLOR FILTER TOP 1 7 PSLDMO310 1 EM BELT FOR COLER FILTER L amp R SIDE 2 8 JLANGQOD16 1P JANGLE FOR COLOR FILTER FIX LEFT SIDE 2 9 LANGQO013 1P ANGLE FOR COLOR FILTER FIX BOTTOM SIDE 1 10 LANGQ0015 IP ANGLE FOR COLOR FILTER RIGHT SIDE 1 11 550098 PANEL 1 12 PCUSSO099 PANEL 1 13 550097 PANEL 1 14 550100 PANEL 1 15 XTTSB40P200 SCREW FOR COLOR FILTER ANGLE 11 16 IWEPPA2SD001F PDP PANEL 1 17 PCUSS0106 1P CUSHION 9 18 LHLDPOD74 1F HOLDER FOR PDP PANEL PLACED ON UP LEFT 1 19 550095 17 SPEAKER SPONGE 2 20 850096 12 SPEAKER SPONGE 2 21 RSPKILOGB 1CFI SPEAKER 2 22 51014 1 SPEAKER HOLD 2 23 XEASD30P08000 SCREW FOR HOLDER 8 24 XITSB40P20000 SCREW FOR PDP HOLDER 14 25 LHLDPO076 1F HOLDER FOR PANEL PLACED 1 26 5030 10000 FINE SCREW FOR HOLDER 2 27 XEASD3OPOROO02. LEG BASE LEG ANGLE 6 6 60 GLEGG1016 1 LEG CUSHION 2 61 XBPSC40P10JS SCREW FOR LEG TUBE LEG ANGLE 8 62 XTTS840P20000 SCREW FOR LEG 4 63 HINDP0414 1P B RGB INDICATOR PVC 1 64 0415 1 POWER INDICATOR PVC 1 65 HINDPO416 1P FILTER INDICATOR 1 66 PGLS 0013 1 FILTER 42 1 i R TE WS 13 1 0 FACTORY ADJUSTMENT METHOD VERI 0 1 PANEL voltage adjustment The power voltage should be adjusted and checked when changing the panel or power board POWER VOLTAGE ADJUST FOR SAMSUNG TTL PANEL GND POWER BOARD VA VSC VS VR VSET DIGITAL BOARD EXT INT o o CNOL VOLTAGE CHECK POINT CNO1 SELECT INT CNOS SELECT EXT EXT INT 9 CN05 o o o o o o o o o o o o o PIN 1 amp 5 CONNECT A POWER SWITCH 1 DIGITAL BOARD CONO1 SELECT TO INT 2 DIGITAL BOARD CONO5 SELECT TO EXT MAKE A SW CONNECT POWER BOARD 80011 PIN 1 8 PINS FOR POWER SWITCH 4 FOLLOW THE PANEL LABEL VOLTAGE ADJUST VR 5 VOLTAGE CHECK FROM
3. SCL Signal Assignment TMDS Data 0 TMDS Data 0 TMDS Data 0 5 Shield TMDS Data 5 TMDS Data 5 TMDS Clock Shield TMDS Clock TMDS Clock SPECIFICATION VER1 0 2 3 9 RGB DVI For VESA Standard Pee ARA Refresh Horizontal Vertical Honzomtal rate Polaritv Polaritv Ooo 22 _______ 480 6 315 5994 25 175 b 640VGA x 80 72 379 7288 31500 B 640vGAx 80 75 375 75 91500 a emvGax 480 85 433 801 3600 5b 800 8VGA x 600 56 351 5625 3600 800 SVGA x 600 60 379 60317 gt 40000 800 8VGA x 600 72 7219 5000 6 8 B 75 v5 9 B00 SVGA x 600 8506 56250 coor 6500 7590 H2 8 587 94500 68 6002 10599 7603 1550 1280 SXGA x 1024 8s 9115 8502 15750 350 72 3150 70 25 75 is 50 55 so 2575 806 1280 HDTV x 720P 60 4515 60 74250 cio 1920 HDTY x o 3378 so 74280 22 f 720 008 x 4 3146 7008 28320 ps ssxwGAy 40 60 em 00 RGB DVI For Apple Standard Refresh Horizo
4. IMAGE BOARD ASS Y DPWB11393 1G S 7 1 BOARD VIEW 1 0 MASTER POWER SWITCH B D ASS Y DPWB11398 1G BOARD VIEW VER1 0 AUDIO AMPLIFIER BOARD ASS Y DPWB11372 1G S 7 3 BOARD TOP VIEW VER1 0 FRONT BUTTON CONTROL BOARD ASS Y DPWB11372 1G K BOARD VIEW VER1 0 MODULE NAME PARTS NO AV MODULE BOARD ASS Y DPWB11372 1G T 7 5 BOARD TOP VIEW VER1 0 MODULE NAME PARTS NO INTERFACE BOARD A SSY LJ92 00569B 7 6 BOARD VIEW VER1 0 MODULE NAME PARTS NO LOGIC BOARD ASS Y LJ92 00573 7 7 BOARD VIEW VER1 0 MODULE NAME PARTS NO PANEL POWER SUPPLY ASS Y LJ44 00025A BOARD TOP VIEW VER1 0 MODULE NAME PARTS NO POWER INPUT MODULE ASS Y LJ92 00579A 7 9 BOARD VIEW 1 0 MODULE PARTS NO INTERFACE BOARD X ASS Y LJ92 00568B 7 10 BOARD TOP VIEW VER1 0 MODULE NAME PARTS NO LOGIC E BUFFER ASS Y LJ92 00581A 7 11 BOARD TOP VIEW VER1 0 MODULE NAME PARTS NO Y AMP BOARD UPPER ASS Y LJ92 00570A 7 12 BOARD VIEW 1 0 PARTS NO Y AMP BOARD LOWER ASS Y LJ92 00571A 7 13 BOARD TOP VIEW VER1 0 MODULE NAME PARTS NO LOGIC F BUFFER ASS Y LJ92 00582A 7 14 BOARD VIEW PDP PANEL MODULE ASS Y VVEPP42SD001F 7 15 ELECTRONIC MODULES LIST VE
5. 85 94 5 1280 1024 60 108 1280 1024 75 135 1280 1024 85 157 5 25 175 640 350 70 640 25475 MHz 5 Horizontal visible 1024 1024 1024 1024 1280 1280 1280 640 640 24 Horizontal front porch 16 Vertical total Vertical front porch 37 62 6 3 Vertical sync 6 Horiz sync polarity Dot rate Resolution 8 Rate 108 TTL zi 25 74 25 28 320 30 57 283 57 283 100 000 Horizontal front porch 42 68 720 900 18 108 852 955 19 48 832 32 80 640 832 1152 1152 1456 32 32 64 128 Horizontal back porch 54 36 80 224 144 Horiz blanking time Vertical visible Vertical total 562 5 180 2 103 525 2 192 320 304 918 667 915 Vertical sync Vertical back porch 3 33 42 BE qp Horizontal frequenc 45 15 33 78 31 46 31 72 68 85 49 73 68 68 Vertical frequency 60 60 Vertical sync polarity Horiz sync polarity _ 70 08 60 41 35 Vertical blanking 63 44 5 49 45 48 43 45 Ee 75 00 74 55 75 06 74 25 74 25 2832 30 57 283 57 283 100 000 EXPLODED VIEW VPW425 EXPLODED VIEW MECHANICAL PARTS
6. CHECK POINT WITH GRAND 6 ADJUST SEQUENCE ist gt 2nd gt 34 4 5 VA VSC VS VR VSET VR8005 VR8006 VR8003 VR8001 VR8007 4 1 FACTORY ADJUSTMENT METHOD VERI 0 2 Color temperature adjustment Push the DVI 0 335 GAIN RGB XXX factory service key to into the adjustment mode The following will appear 5400 0 343 Bias RGB XXX Use the AV key to select the color to adjust and key to adjust the level The required equipment is CA 100 Vp300 a Adjust Bias first to set Y to 0 4 on CA 100 Adjust R or B to set the value of X Y on CA 100 to be the same as the value showing screen The value of Y should be maintained at 0 4 during adjustment Move the cursor to adjust Gain The value of should be adjusted to 25 Then adjust R or B to let the value of X Y on CA 100 be the same as the value showing on screen The value of Y should be maintain 25 during the adjustment Repeat to check the Bias and Gain The value of Y X and Y should be the same as the previous adjusted value Then the DVI 5400 k mode is adjusted complelely Push the factory service key again to next picture Then repeat the steps a b c to adjust If the adjustment is completed sepeat d a b and c steps to adjust again When the last mode AV 13000 k is adjusted completely push the factory service key again to leave the adjustment mode Note 1 There are 12 adjusted modes DVIx4 RGBx4 AVx4 2
7. SCREW FOR POWER PWB 4 28 QSW P1250 11W1 PUSH POWER SW 1 29 XBSSQ30P08000 POWER SW 4 30 0807 1 POWER SW ANGLE 1 31 XEASD30P10000 POWER SW ANGLE FIX 3 32 JKNBPO520 1F A MAIN POWER KNOB 1 33 DPWB11372 16 S SOUND BOARD ASSY 1 34 XBPSD30POBJSO AUDIO PWB FIX 4 35 LHLDPO073 1F HOLDER FOR PDP PANEL PLACED ON UP RIGHT 1 36 LHLDPO075 1F HOLDER FOR PDP PANEL PLACED ON DOWN RIGHT 1 37 LSTD 0011 1 A INTFERFACE PCB 4 38 DPWB11393 16 S IMAGE BOARD ASS Y 1 39 LANGF0829 1P PANEL ANGLE 1 40 xBPSD30POBJS0 SCREW FOR AV PANEL 5 41 RFIL 1078 1 FILTER SOCKET 1 42 LANGF0827 1P AC FILTER FIX ANGLE 1 43 1510 0011 1 STUD 41MM FOR CAB B 2 44 6CA880297 1P REAR CABINET 1 45 PSLDMO311 EMI BELT FOR CAB B STICK ON TOP amp BOTTOM 2 46 PSLOMO312 EMI BELT FOR CAB B R L SIDE 2 47 xTTSB40P20000 CAB B FIX 12 48 XEASD30P10000 SCREW FOR POWER PWB 6 49 0299 1 REAR CAB FOR AV PWB BOX 1 50 DPWB11372 16 T TUNER BOARD ASS Y 1 51 GCABA0251 1F A FRONT CABINET FOR AV PWB 1 52 XBJSQ30P PWB BOX CAB B 5 53 55 50 12000 SCREW FOR AV JACK amp CAB A 8 54 LHLD 0288 1 BUSH FOR 4 55 8 SCREW PANEL 4 56 LANGF0832 1C TUBE ASS LY 2 56 1 0 0044 COVER FOR TUBE 2 57 GSTN 0009 1F B LEG BASE 2 58 LANGF0831 1P A LEG FIX ANGLE 2 59 XETSD40P16000
8. an improperly fitted and or incorrectly secured cabinet back cover c Leakage Current Hot Check With the instrument completely reassembled plug the AC line cord directly into a 120V outlet Do not use an isolation transformer during this test Use a leakage current tester or a metering system that complies with American National Standards Institutes ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL 478 With the instrument AC switch first in the ON position and then in the OFF position measure from a known earth ground metal waterpipe conduit etc to all exposed metal parts of the instrument antennas handle bracket metal cabinet screwheads metallic overlays control shafts etc especiallv anv exposed metal parts that offer an electrical return path to the chassis Anv current measured must not exceed 3 5 milliamp Reverse the instrument power cord plug in the outlet and repeat test ANV MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER iw LEAKAGE CURRENT TESTER AC Leakage Test READING SHOULD NOR BE ABOVE 3 5mA DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES 3 WIRE CORD ALSO TEST WITH PLUG REVERSED USING AG ADAPTER PLUG AS REQUIRED EARTH GROUND 2 Read and complv with all caution and safetv related notes on or inside the Moni
9. AUDIO 91 Video Signal Output impedance 75 ohm 1 0 Vp p 0 2Vp p input signal at 1 0 Vp p 0 2Vp p SPECIFICATION Preset Timing Chart A PIE Sync Description Total time Active display area including borders Active display area excluding borders Left Top border B Right bottom border 1 Blanking Front porch Svnc width Back porch 54 61 c ps Rate 640 480 72 640 480 75 640 480 85 _______ 800 600 56 VER1 0 800 600 800 600 800 600 85 Hz 56 25 MHz 640 640 800 800 800 800 Dots 00 832 840 832 1024 1056 1040 1056 1048 Dots Horizontal front porch 16 25 Horizontal back porch 2 40 128 20 80 64 Dots Horiz blanking time 160 192 200 e 256 2 248 Dots 580 600 600 600 600 Lines Lines Lines Vertical banking tim 45 40 20 29 59 94 72 81 85 01 56 25 60 317 7219 75 85 06 Hz vertical polarit l SEM TIE Horie syne ee IDotrate 25 175 31 5 315 36 2 8 36 40 55 25 MHz SPECIFICATION Preliminary _ 10 M 12 13 14 15 16 18 19 1024 1 33 bu 1024 768 75 78 75 d 227 A Rate Pixel 1024 768
10. D ASSEMBLY VIEWS 7 1 MAJOR ELECTRONIC ASSEMBLY PARTS 8 1 o PACKING of 9 1 VPW425 1 Service Manual IMPORTANT SAFETY PRECAUTIONS VER1 0 1 Before returning an instrument to the customer always make a safety check of the entire instrument including but not limited to the following items a Be sure that no built in protective devices are defective and or have been defeated during servicing 1 Protective shields are provided on this chassis to protect both the technician and the customer Correctly replace all missing protective shields including any removed for servicing convenience 2 When reinstalling the chassis and or other assembly in the cabinet be sure to put back in place all protective devices including but not limited to nonmetallic control knobs insulating fishpapers adjustment and compartment covers shields and isolation resistor capacitor networks Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning b Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage Such opening include but are not limited to 1 spacing between the picture tube and the cabinet mask 2 excessively wide cabinet ventilation slots and 3
11. ESSORY 1 RDISC1035 1 A MANUAL 1 BRC 241BVIEWSON R C 1 0 0051028 10 RGB CABLE 1 14 RBATB0221 10DC BATTERY 2 1009 1 QUICK STARE GUIDE 1 0 51045 10 S VIDEO 1 QPLGR1216 103 LABLE 1 QPLGR1211 103 AV CABLE 1 9 01 VER1 0
12. F L17 9 V33P VIP711 2 115 O V33TMP VDRAM VDDM VCC3 M 5VDDA 031 V33ADC o vasPLL REG 5V TT o VADC 5VDDMI REG 5 000 VCCA3 S a ad O VADC3 S VCC3 S VCC3 M S 5 4 BLOCK DIAGRAM VER1 0 PDP Sound Block Diagram ICS1 ICS2 SUB WOOFER LPF MUTE OUTPUT PAGE2 GR Am SELECTOR Q1 Q ICA1 ICA2 AV_ OUTPU INPUT BUFFER MUTE ICR1 SRS SURROUND FIXED VARIBLE PROCESSOR OUTPUT SELECTOR 08 09 01 MUTE U1 2 BBE 8 SOUND BUFFER MAIN POWER INSIDE PROCESSOR AMPLIFIER AMPLIFIER DPWB11372 1G S 5 5 BLOCK DIAGRAM VER1 0 Tuner Signal Block Diagram POWER BLOCK 7809 9 IC201 5012 FROM IMAGE BOARD CPU SDA2 5V 2502482 Q241 TV_L OUT UPC 1854ACT UDIO OUT MTS TU201 RF MODUL TU201 PIF MODULIEA IC203 TV_ROUT VIDEO OUT 11372 165 5 6 TROUBLE SHOOTING GUIDES VER1 0 NO POWER SET POWER ON AC Master Power Switch Board DPWB11398 1G Power Input Module LJ92 00579A Replace Power Input Module Y LJ92 00579A Panel Power Supply N LJ44 00025A Replace Panel Power Supply LJ44 00025A 6 1 TROUBLE SHOOTING GUIDES VER1 0 No picture AV Module Board with Tuner N DPWB11372 1G T Replace AV Module Board with Tuner DPWB11372 1G T Image Board N DPWB11393 1G S Replace Image Board DPWB11393 1G S PDP Panel
13. Module VVEPP42SDOO1F Replace PDP Panel Module VVEPP42SD001F 6 2 TROUBLE SHOOTING GUIDES VER1 0 Vertical Line failure Interface Board Z LJ92 00568B Replace Interface Board Z LJ92 00568B PDP Panel Module Aeesmbly VVEPP42SDOO1F Replace PDP Panel Module Aeesmbly VVEPP42SD001F 6 3 TROUBLE SHOOTING GUIDES VER1 0 Horizontal Line Failure Horizontal Line Interface Board Y LJ92 00569B Replace Interface Board Y LJ92 00569B Replace Y Amp Board Upper LJ92 00570A Y Amp Board Lower LJ92 00571A Y Amp Board Upper LJ92 00570A Y Amp Board Lower LJ92 00571A PDP Panel Module Assembly VVEPP42SDOO01F Replace PDP Panel Assembly VVEPP42SD001F 6 4 TROUBLE SHOOTING GUIDES VER1 0 NO Remote Control SET POWER ON Remote Control N Replace Replace Battery BRC Y Front Button Control Board N DPWB11372 1G K Replace Front Button Control Board DPWB11372 1G K Image Board N DPWB11393 1G S Replace Image Board DPWB11393 1G S 6 5 TROUBLE SHOOTING GUIDES VER1 0 Front Button Failure SET POWER ON Front Button Control Board DPWB11372 1G K Replace Front Button Control Board DPWB11372 1G K Image Board DPWB11393 1G S Replace Image Board DPWB11393 1G S 6 6 BOARD VIEW VER1 0 a p u s ra MODULE NAME PARTS NO
14. Pin 21 GND AGND AGND Pp as II i a M GND J s AGND i a i olokolo obo mem molo A10 OmIRIOHRIO O LIO LIO 21 2 2 21 11 O lt Ir EU Sjo 4 U 4 gt 5 IN gt IG 22 FU IND i Pin 26 i Pin 28 Pin 29 Pin 30 Pin 31 N Pin 32 N Pin 33 N N N N N N N B10 gt O 2 O Pin 24 AGND 91910 222212 ojojo gt gt LZ w w DU DU AGND AGND 21 TV L 5 5 5 TDI TMS gt gt OJO papa OJO O O 4 gt gt DU gt ege U D U 2 U w D L O w AS SP 15 MP 585 36 Pin 37 Pin 38 Pin39 NC Pin 40 Pin 34 Pin 35 C I eo o 5 o o N Joo 1 414 41 1 o 5 fenton fafa fa fa ox o o Ino co Imo ox o ru A A2 A3 A4 A5 7 8 9 1 2 B3 B4 B5 B7 B8 C1 C2 C3 C4 C5 C6 C7 C8 C9 iei lt gt C10 C16 O O O 22 O Image Board lt gt Audio Amplifier Board Image Board Audio Amplifi
15. R1 0 Model Name VPW425 N Module Supplier Supplier s i Projected Curren Designator Part AFR EH 1 Board Sampo DPWBII393G S 1 AC Master Power Switch Sampo DPWBI11398 1G 1 3 Audio Amplifier Board Sampo 11372 16 5 1 Front Button Control Sampo DPWBI1372 1G K 1 Module Board with Sampo DPWB11372 1G T 1 uner 2 4 5 7 amsung 8 Panel Power Supply Samsung 1 44 00025 _____ 9 ower Input Module amsung amsung lt Amp Board Lower Samsung 1LJ92 00571A b ala ogic F Buffer DP Panel Module amsung LJ92 00582A amsung ry 8 01 PACKING LIST eu p Sl PDP PACKAGING ASSEMBLY VPW425 EXPLODED VIEW MECHANICAL PARTS ITEM PART NO DESCRIPTION UNIT 1 SET VPW425 1 2 TLABM1178 1 MODEL LABEL 1 3 01142 1 BAR CODE 1 4 01139 1 585 LABEL 1 5 55 0184 1 EPE 1 6 5 0640 1 POLYFOAM 1 7 693 1 CARTON 1 8 020 1 CASE HANDLE 4 9 ZTAPEQ075T050 TAPE 1 TLABWO056 1 METER 1 11 ZTIE P155Y1600 WRAPPING 2 12 TLABD1140 18 UPC CODE 1 13 ZTAPEZ500T500 FILM 1 1066 10 POWER CORD ACC
16. Service Manual ViewSonic VPW425 Model No VLCDS22554 1W 42 Plasma TV Monitor ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Copyright Copyright 2002 by ViewSonic Corporation All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of ViewSonic Corporation Disclaimer ViewSonic makes no representations or warranties either expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes Trademarks ViewSonic is a registered trademark of ViewSonic Corporation other trademarks used within this document are the property of their respective owners Revision History Description Of Changes Approval 8 28 02 Initial Issue DCN2564 ii VPW425 1 Service Manual Service Manual ViewSonic VPW425 Model No VLCDS22554 1W 42 Plasma TV Monitor ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Cop
17. The adjusted sequence is DVIBRGBGAV 3 DVI RGB Bias Y 0 4 Gain Y 25 AV Bias Y 1 Gain Y 25 4 2 BLOCK DIAGRAM VER1 0 PDP Socket Diagram Audio Amplifier AV Module Board Ass y Board with Tuner JP2 Assy Pin 1 32 5 Y Amp Board Upper image Board PANEL Power Pin 1 31 Supply Ass y J14 1 12 Pin 1 6 Interface Board Y Ass y 5V SB DET 421 1 Pin 1 7 24V 9V 8 5 Pin 1 6 Pin 1 10 Pin 7 13 Audio Signal J11 1 Pin 1 12 AUDIO 1 Audio DC Suppl CON8009 J5 1 Pina Pin 1 6 Key Button Control Board Assy Y Amp Board Lower 4 Pin 1 6 Logic E Buffer 14 Power Input Module Assy AC PLUG Panel s Board Assembly SAMPO Board Assembly BLOCK DIAGRAM VER1 0 lmage Board Socket Data Image Board lt gt Panel Image Board lt gt AV Module Board Image Board lt gt AV Module Board Image Board Ass y Image Board AV Module Board Image Board AV Module Board Content 40 J14 6 Pin J15 4 Pin J21 7 Pin J25 3 Pin JP2 48 Pin 5 48 Pin JP2 48Pin J 15 DGND Pin 5 5012 Pin 6 DGND 7 RB SDA2 Pin 8 Pin 9 NG DGND Pin 1 Pin 1 DGND DGND ___ Pin 1 Pin 1 Pin 1 TUN_DETn DVIL Pin 1 Pin 1 Pin 1 Pin 1 OUT OUT 19 RD GND SUB WFR B10 PWR CTL
18. Y C Cp and Y Pp Pp 6 pin Din S terminal 9 pin D SUB 15 pin D SUB 24 pin DVI Analog Positive Video 1Vp p priority S Video Y 1Vp p C 0 286Vp p 15 734KHz V 60Hz NTSC 15 625KHz V 50Hz PAL 75 ohms Analog Positive AV 1Vp p with sync S Video Y 1Vp p C 0 286Vp p 15 734KHz 60Hz NTSC H 15 625KHz 50Hz PAL 1 31KHz 60Hz 480P 2 45KHz 60Hz 720P 3 33KHz 60Hz 10801 SPECIFICATION 2 3 4 RGB Signal a Type b Polarity c Amplitude d Frequency 2 3 5 DVI Signal a Type b Polarity c Frequency 2 3 6 Audio Signal TTL Positive or Negative RGB 0 7Vp p H support to 31K 91KHz V support to 50 85 2 Digital Positive or Negative H support to 31K 63KHz V support to 50 85Hz VER1 0 Analog 500mV rms more than 22Kohm 2 3 7 Pin Assignments For D SUB Connector In Loop Out Pin 1 2 3 4 5 Signal Assignment RED GREEN BLUE GND GND Pin 6 7 8 9 10 Signal Assignment RED GND GREEN GND BLUE GND NC GND 2 3 8 Pin Assignments For 24 Pin DVI Connector Digital Only Pin 1 2 3 4 5 6 7 8 Signal Assignment TMDS Data 2 TMDS Data 2 TMDS Data 2 4 Shield TMDS Data 4 TMDS Data 4 DDC Clock DDC Data No Connect Pin Signal Assignment TMDS Data 1 TMDS Data 1 TMDS Data 1 3 Shield TMDS Data 3 TMDS Data 3 Power Ground For 5V Hot Plug Detect 2 2 Signal Assignment GND SDA H SYNC 5
19. brightness Support to 1280 x 1024 920 8 mm for mode 1 26 518 8 mm for mode 1 26 Mode 1 269 full scan Mode 1 269 full scan Timing Mode 1 More than 30FL while pressing recall button to set default brightness with contrast brightness at Max and black signal less than 0 4FL Main power switch power ON OFF Power ON OFF Input Mode Video1 gt S Video1 gt Video2 or S Video2 gt 1 Y C Cp 1 gt Y Pp Pp 1 or 1 gt RGB gt DVI gt Video1 run in circle Menu key Adjustment Power on off Input Mode same as Main unit button Volume Wide Video S video input 4 3 16 9 ZOOM1 ZOOM2 Analog RGB input W4 3 W16 9 Menu Adjustment RECALL PIP SWAP MUTE Brightness Contrast Color Tint Sharpness Color Temperature Display position Brightness Contrast Vertical position Vertical width Horizontal position Horizontal width Color Temperature Clock phase DPMS Brightness Conirast Vertical position Vertical width Horizontal position Horizontal width Color Temperature DPMS Without Stand With Stand 2 4 SPECIFICATION 3 1 3 2 4 1 4 2 4 3 Width Height Depth Package Dimensions Width Height Depth Weight Net weight Gross weight ENVIRONMENT Operating Temperature Relative humidity Pressure Non Operating Temperature Relative humidity Pressure Vibration Acoustics IHF A weig
20. cteristics AGC Figure Of Merit 50dB Min RF signal range in which video at PDP drops 6 dB from output level obtained with 100mV input RF AGC Cut In Level 55dB 2dB FM AM Rejection 100mV at SIF input 14dB min Noise Limits Sensitivity VHF 45dB max UHF 49dB max RELIABILITY REQUIREMENT The MTBF needs 20000hrs under operation 25 5 C half luminosity motion picture REGULATORY REQUIREMENTS Safety Requirement a UL Safety of information technology equipment including electrical business equipment b CSA Safety of information technology equipment including electrical business equipment c TUV Emission Requirement The unit shall meet the EMI limits in all screen modes For EMI testing the unit must be failed with the screen pattern consisting of scrolling capital characters also the brightness contrast will be adjusted to max Level a FCC class A part 15 Transit test 2 6 SPECIFICATION VER1 0 a Drop Test 200mm max b Vibration Test 1 Forward and backward 30 minutes 1000 c p m 2 Right and left 30 minutes 1000 c p m 3 Up and down 30 minutes 1000 c p m 8 4 Power Management Normal Pulse Pulse Active Normal power Stand b Power saving Pulse No pulse Blanked Less This Plasma display is Energy star compliant when used with a computer equipped with DPMS Note The power indicator LED color is green in normal state yellow in stand by and power saving state 9 VIDEO amp
21. er Board Image Board lt gt Audio Amplifier Board i 24V Jit 12 Pin 12 Pin Image Board Audio Amplifier Board Front Button Control fi Pin 2 Ji2 10 Pin JA2 10 Pin 9 i DGND Pin 1 75 6 Pin SB5V Pin2 Pin 1 i Pini _ 59 i Pin 7 Pin 8 i i Pin 7 Pin 6 Pin 10 Pin 8 Pin 11 i Pin 12 Pin 10 ro 5 5 5 5 ko o Joo ro jojojo 5 5 5 ko Joo 5 2 BLOCK DIAGRAM TV AV S VIDEO Y1 CB CR Y1 PB PR V2 CB CR Y2 PB PR Image Board Signal Block Diagram SDRAM PAGE4 6630 6730 VIDEOS MAIN Video Processor TA8551CH AV SWITCH RGB_IN RGB_OUT U45 PAGE3 TET 6630 6730 SUB Video Porcessor UV 046 5 Converter 029 PAGE8 SDRAM PAGE6 R G B BCR YPBPR TA1276 Color Space Conveter U43 CPU U4 PAGE9 RS232 5 3 SDRAM SCALE IC LVDS C711 C713 TRANSMITTE 023 14 11 Clock Generator 9161A PLL PAGE13 VER1 0 BLOCK DIAGRAM VER1 0 Image board Power Block Diagram p d USB5V SB5V M SB5V IO SB5V CPU SB5V V SB5V VO D43 9 R376 9 02 03 DVI_5V y dd PSV 49V O P5V_COLOR TT o U13 O USB3V P5V 5V_OSD V33 VDD33 VCCPLL e L13 000 U61 VCCB
22. hted 1meter SOUND a Residual hum at volume min VER1 0 1040mm 1040mm 648 mm 690mm 95mm 375 mm 1230 mm 960 mm 470 mm 79 4lbs 36 Kgs w o stand 83 8lbs 38Kgs w stand 115Ibs 52 Kgs 0 40 C 32 104 F 20 80 800 1114hpa 20 60 C 20 90 700 1114hpa X VIZ 0 5G 10 55Hz sweep 10 minutes 40dB Max 500 W b Practical max Audio output at 10 THD max 1 0vp p 1K Hz input 5W 5W Max 12 ohm c Sound distortion at 250 mw 1K Hz 1 Max d Sound distortion at i ovp p 1kHz input volume 9 max e Audio output input at 1 4V5 p gt 1 0 Vp p f Max hum at volume max 1000 W Max g Sensitivity at volume max O P 1W 150mV 3dB at 1KHz AV Input h Audio Fidelity 1KHz OdB corrected for emphasis characteristics BBE ON 60Hz 6dB 3dB 10KHz 8dB 3dB WOOFER 8 BBE OFF 100Hz 6dB 3dB 10KHz 2dB 2 5 SPECIFICATION VER1 0 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 8 1 8 2 8 3 RF Sensitivity Peak VHF CH 2 CH 13 30dB Max UHF CH 14 CH 69 30dB Max CATV CH A 5 CH W 29 30dB Max AFT Range VHF CH 2 13 0 6MHz Min UHF CH 14 69 0 6MHz Min CATV CH A 5 CH W 29 0 6MHz Min Picture IF Rejection VHF CH 2 CH 13 50dB Min UHF CH 14 CH 69 50dB Min CATV CH A 5 CH W 29 50dB Min Picture Image Rejection VHF CH 2 CH 13 40dB Min UHF CH 14 CH 69 35dB Min CATV CH A 5 CH W 29 35dB Min AGC Chara
23. ntal Vertical Vertical Horizontal Mode No Resolution Rate Ereauenev Ereau c Sync Sync Dot rate quency Frequency polarity Polarity a f 75 6885 7500 57283 ps 8264 75 r 745 57283 e ns2xsr 75 6868 75 100900 85 60 0 565 1024 XGA x 768 75 600 7503 78 750 85 687 _60_ Attention For DVI is not supported 2 3 10 Y PB PR For Component Refresh Rate 640 x_480P 2 1920 1080 6 3 2 60 SPECIFICATION 2 4 VER1 0 Display Performance Requirements The data of display performance are measured based on the following Conditions unless otherwise specified a Ambient temperature Warm up period Line input voltage Viewing distance Display mode Brightness condition 2 4 1 Maximum Resolution 2 4 2 Horizontal Size Standard Vertical Size Standard 2 4 3 Horizontal Size Max 2 4 4 Maximum Brightness Level 2 5 Vertical Size Max a 100 center block white pattern mosaic b raster background Operation Main unit button IR Remote Control 2 5 1 Adjustable Items AV S video input Y CB CR Analog RGB input DVI input DIMENSIONS 25 5 C 30 minutes Min 100 Vac 240 Vac 50 60 Hz Distance from screen is 81 cm Test with window white pattern mode if not specified Press recall bottom to set default
24. omponents rated for higher voltage wattage etc Parts that have special safety characteristics are identified in this service data by shading with a mark on schematics and by shading or a mark in the parts list Use of a substitute replacement part that does not have the same safety characteristics as the recommended replacement part in this service data parts list might create shock fire and or other hazards 1 02 SPECIFICATION VER1 0 1 SCOPE These specifications describe all the characteristics of the 42 inch color monitor 2 ELECTRICAL REQUIREMENTS 2 1 Display panel Specification a Screen size Diagonal 42 inch b Aspect ratio 16 9 wide c Number of pixels 852 Horizontal RGB Trio X 480 Vertical pixels d Pixel Pitch 1 08mm X 1 08mm e Luminance 570cd m at APL13 f Chromaticallv 0 270 0 03 y 0 300 0 03 color temperature mode 1 at center block white pattern 100 mosaic 2 2 Power Source a Input voltage 100 240 50 60 Hz b Input current 3 3A c Inrush current 60 A p p 20ms Max d Power consumption 380 10 Watts at 110Vac color bar pattern e Stand by amp DPMS 5 Watts Max at 110Vac 2 3 Input Signal 2 3 1 Connector Type 2 3 2 Video S Video Signal e 2 3 3 Y CB CR or Y PB PR Signal Polarity Amplitude Input impedance a Type b Polarity c Amplitude d Frequency HDTV RCA Jack for audio video
25. ransformer inserted in the power line between the receiver and the AC power source for both personnel and test equipment protection c Some Projection Monitor chassis have a secondary ground systems in addition to the main chassis ground This secondary ground system is not isolated from the AC power line The two ground system are electrically separated by insulating material that must not be defeated or altered 5 Observe original lead dress Take extra care to assure correct lead dress in the following areas a near sharp edges b near thermally hot parts be sure that leads and components do not touch thermally hot parts c the supply d high voltage e antenna wiring Always inspect in all areas for pinched out of place or frayed wiring Do not change spacing between components and between components and the printed circuit board Check AC power cord for damage 6 Components parts and or wiring that appear to have overheated or are otherwise damaged should be replaced with components parts or wireing that meet original specifications Additionally determine the cause of overheating and or damage and if necessary take corrective action to remove any potential safety hazard 7 PRODUCT SAFETY NOTICE Many Monitor electrical and mechanical parts have special safety related characteristics some of which are often not evident from visual inspection nor can the protection they give necessarily be obtained by replacing them with c
26. tor cabinet on the Projection Monitor chassis or on the picture tube 3 Design Alteration Warning Do not alter or add to the mechanical or electrical design of this unit Design alterations and additions including but not limited to circuit modifications and the addition of the items such as auxiliarv audio and or video output connections might alter the safetv characteristics of this Projection Monitor and create a hazard to the user Any design alterations or additions will void the manufacturer s warranty and will make you the service responsible for personal injury or property damage resulting therefrom 1 01 IMPORTANT SAFETY PRECAUTIONS VER1 0 4 Hot Chassis Warning a Some Monitor chassis are electrically connected directly to one conductor of the AC power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source To confirm that the AC power plug is inserted correctly with an AC voltmeter measure between the chassis and a known earth ground If a voltage reading in excess of 1 0V is obtained remove and reinsert the AC power plug in opposite polarity and again measure the voltage potential between the chassis and a known earth ground b Some Monitor chassis normally have 85V AC RMS between chassis and earth ground regardless of the AC plug polarity These chassis can be safely serviced only with an isolation t
27. yright Copyright 2002 by ViewSonic Corporation All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of ViewSonic Corporation Disclaimer ViewSonic makes no representations or warranties either expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes Trademarks ViewSonic is a registered trademark of ViewSonic Corporation other trademarks used within this document are the property of their respective owners Revision History Description Of Changes Approval 8 28 02 Initial Issue DCN2564 ii VPW425 1 Service Manual TABLE OF CONTENTS WARNINGS amp CAUTIONS a a a l 1 SSPECIEICATIONS iino edere trad tete Ady tn Wat AW zd o d da p 2 1 EXPLODED VIEW un z te ER a 3 1 FACTORY 4 ELECTRONIC ADJUSTMENTS 4 1 BEOCK DIAGRAM dA da Od i 5 1 TROUBLESHOOTING FLOW 6 1 PC BOAR
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