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Service Manual

ViewSonic

VE500

-1

Model No. V

LCDS23722-1W

(

VE500-1

_SM_

526

- Rev. 1a –

August

2002)

1

5

” Color TFT LCD Display

ViewSonic

381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for VE500-1

Page 1: ...Service Manual ViewSonic VE500 1 Model No VLCDS23722 1W VE500 1_SM_526 Rev 1a August 2002 15 Color TFT LCD Display ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Page 2: ...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 publica...

Page 3: ...3 5 INTERNAL CONNECTOR PIN DEFINITION 5 6 BLOCK DIAGRAM 9 7 TROUBLE SHOOTING FLOW CHART 11 8 SPARE PARTS LIST 15 9 EXPLODED DIAGRAM AND SPARE PARTS LIST 18 Confidential Do Not Copy VE500 1 ViewSonic C...

Page 4: ...o protect the display from overheating Do not block ventilation slots and openings with objects or install the display in a place where ventilation may be hindered z Do not install this display near a...

Page 5: ...er Viewing angle Horizontal r 60 Vertical 60 40 Tilt 20q 5q Contrast ratio 350 1 typ Brightness 250 cd m2 typ Response time 30ms typ tr tf Active display area 304 1 mm H x228 1mm V AC DC adapter Input...

Page 6: ...roll up in sub menu or to increase value of selected item If pressed when menu is not active BRIGHTNESS is adjusted 4 ADJUST LEFT To scroll down in sub menu or to decrease value of selected item If pr...

Page 7: ...e time 3 As shown on Fig 4 Fig 5 and Fig 6 The screen will show Auto image out after the LED light is changed to Green 4 As shown on Fig 6 The All Reset procedure is finished after Auto image Adjust m...

Page 8: ...ltage for Inverter unit DC 5V 3 VCONT Voltage for Adjusting Backlight Brightness 4 GND 5 Vin Supply Voltage for Inverter unit DC 12 XGA I F BOARD DPWBN5396T8 J1 Signal Input Terminals Connector P N QC...

Page 9: ...GREEN Data Signal of Even Pixels 9 GB3 GREEN Data Signal of Even Pixels 10 GB4 GREEN Data Signal of Even Pixels 11 GB5 GREEN Data Signal of Even Pixels 12 GB6 GREEN Data Signal of Even Pixels 13 GB7 G...

Page 10: ...Signal of Odd Pixels 36 BA5 BLUE Data Signal of Odd Pixels 37 BA6 BLUE Data Signal of Odd Pixels 38 BA7 BLUE Data Signal of Odd Pixels 39 GND 40 DE Data Enable Signal 41 Vsync Vertical Sync Signal 42...

Page 11: ...GND 3 DimmingDimming range 0 4 4v 4 ON OFF ON 5V OFF 0V 5 ON OFF ON 5V OFF 0V CN2 CN3 Output Terminal for LCD Panel Back light Pin No Symbol Function 1 High High Voltage for Backlight power supp 2 Lo...

Page 12: ...16 U10 PL CN3 INTERFACE BOARD DPWBN5396T8 JP6 TO INVERTER J3 SWITCH MODE POWER 3 3V 5V ADC U1 AD9888 SCALER U15 EEPROM 24C08 X1 OS FROM A D ADAPTOR SW BOARD DPWBN5403T8 CN1 12V 15 LCD PANEL INVERTER R...

Page 13: ...ding cable connection relationship PHR 11 PHR 8 Pin No Pin No 1 2 2 2 3 3 4 5 5 5 6 6 Inverter cable QCNWS0905T8005 24AWG Shielding cable connection relationship PHR 5 PHR 5 Pin No Pin No 1 5 2 4 3 3...

Page 14: ...OSD adjustment Check Sw board CN1 Check Inverter Check I F board Check Inverter Check backlight Check connector board Check I F board Check LCD panel RGB signal error H Vsyn c error Check power LED H...

Page 15: ...B Debug Procedure J3 12V INPUT Does the screen Display Solution with No display 2 NO Display ok YES Loss of RGB Lost some bits of RGB YES NO YES CHK LP2 LP3 CHK R7 R R5 G R3 B NO YES NO ViewSonic Cor...

Page 16: ...1 22 23 ok CHK J1 NO CHK LP2 LP13 ok CHK U6 CHK U15 CHK CN3 CHK Panel CHK U5 CKT VCC U5 YES CHK system power NO CHK U15 Pin 5 6 CHK U15 if recall function is OK CHK CKT Sheet 5 Panel No screen handler...

Page 17: ...12V INPUT CHK FUSE F1 CHK U11 pin 2 5V CHK U12 pin 2 3 3V CHK U13 pin 2 3 3V CHK 1 L7 2 L8 3 Q4 4 U5 CHK 1 Q5 2 Panel DPWBN5396T8 B POWER FLOW ViewSonic Corporation 14 Confidential Do Not Copy VE500...

Page 18: ...VD2389D8F 420708 SHIELD CASE PSLDM6440D8 420709 SHIELD CASE PSLDM6441D8 420710 L20047 CAB A MAIN BRACKET 15 XEASD30P06000 420711 L20021 KEY BOARD CAB A 3 XEPSN26P06000 420712 L20047 CAB A CAB B 2 XEPS...

Page 19: ...30006 A VC 0101 0253 L20023 VGA CABLE 1 8M VE500 QCODS1492T8D A 430007 A PC 0106 0180 AC POWER CORD 1 8M USA QACC 1126D8D 430009 UPC LABEL TLABZ3903D8 430011 L20050 AC POWER CORD EU1 8M BLACKQACC 1228...

Page 20: ...ViewSonic Corporation Confidential Do Not Copy VE500 1 9 EXPLODED DIAGRAM 1 7...

Page 21: ...4 13 D SUB BRACKET LANGF2051D8 1 14 DECORATION PLATE PISLV0205D8 A 1 15 SHIELD CASE I F BOARD PSLDM6442D8 A 1 16 B IF 0222 0024 I F BOARD DPWBN5408T8 1 17 LCD PANEL 17 VVLM170ES04 1 18 KENSINGTON BRAC...

Page 22: ...3 G_DA2 G_DA1 G_DA0 GND VDD R_DB7 R_DB6 R_DB5 R_DB4 R_DB3 R_DB2 R_DB1 R_DB0 GND VDD R_DA7 R_DA6 R_DA5 R_DA4 R_DA3 R_DA2 R_DA1 R_DA0 GND VDD DATACK DATACK HSOUT NC GND VDD GND GND GND VD PWRDN REFOUT R...

Page 23: ...1 P5 2 AD2 P5 3 AD3 P5 4 DA0 P5 5 DA1 P5 6 DA2 P5 7 DA3 INT P6 2 FBKG BOUT GOUT C123 1000P RP12 4 7KRP 1 8 7 6 5 2 3 4 X1 12MHZ 1 2 C121 NC C42 220P C45 1u C49 0 1u R24 33 RP7 4 7KRP 1 8 7 6 5 2 3 4 R...

Page 24: ...2 1 5 3 14 15 4 6 7 16 8 S1 S2 S3 1Y0 1Y1 2Y0 2Y1 3Y0 3Y1 1Z 2Z 3Z E_ VEE VCC GND C55 0 1u L10 64RFIL 5232T8300A R87 0 R90 0 U17 NC 74AHC1G126 1 2 3 4 5 OE A GND Y VCC L6 64RFIL 5232T8300A R89 NC L11...

Page 25: ...16 RFIL 5231T8600A L17 RFIL 5231T8600A L34 RFIL 5231T8600A L14 RFIL 5231T8600A U12 AIC1084 3 3 3 1 2 4 INPUT GND OUTPUT OUTPUT U13 AIC1084 3 3 3 1 2 4 INPUT GND OUTPUT OUTPUT D7 NC B320 C76 100u 16V R...

Page 26: ...R53 4 7K C80 33 U15 24L16 DIP 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SDA SCL WP VDD R59 33 R51 33 R58 33 C79 NC R56 33 C85 0 01U C86 0 1u C83 100u 16V U14 SD1010A 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2...

Page 27: ...00P R2074 7K R2064 7K SW3 ENTER LED1 LED 3P 2 1 3 SW1 SW5 POWER SW SW2 L24 64RFIL 5232T8300A SW4 A L26 3 3K L27 1 5K L28 64RFIL 5232T8300A L29 64RFIL 5232T8300A J1 CON6 1 2 3 4 5 6 C113 0 1u C114 100P...

Page 28: ...ViewSonic Corporation Confidential Do Not Copy VE500 1 11 PCB LAYOUT DIAGRAM 2 5...

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