ViewSonic VP231WB - 23" LCD Monitor Service Manual Download Page 36 | Manualshive

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6. Trouble Shooting Flow Chart

6.1 No

power.

Check that CN251 pin1, are approximately 24V

Check that C281 are 24V

Failure point

1. Adaptor failure.
2. Disconnected between CN251 and Adaptor.

Check that C262 positive is at 5V.

Failure point

FB251, FB251 failure

Failure point

D251, IC251, L251, Q255 failure

Check:
1. IC255 is O/P 3.3V.
2. IC253 is O/P 1.8V.
3. IC256 is O/P 2.5V.
4. IC252 is O/P 3.3V.

Yes

Yes

Yes

No

No

No

Failure point

IC255, IC253, IC252, IC256

No

ViewSonic

Corporation

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VP231wb

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Summary of Contents for VP231WB - 23" LCD Monitor

Page 1: ...Service Manual ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 ViewSonic VP231wb 23 Color TFT LCD Display Model No VS10092 VP231wb_SM_942 Rev 1a Nov 2004 ...

Page 2: ...ly 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 All other trademarks used within this d...

Page 3: ...Trouble Shooting Flow Chart 9 Block Diagram 10 Schematic Diagrams 7 Recommended Spare Parts List 1 Precautions and Safety Notices 5 Adjusting Procedure 8 Exploded Diagram And Spare Parts List 11 PCB Layout Diagrams 1 ii ViewSonic Corporation Confidential Do Not Copy VP231wb 3 14 20 19 63 57 56 50 36 33 ...

Page 4: ...use of the high voltage used in the inverter circuit the voltage is exposed in such areas as the associated transformer circuits 4 LCD Module Handling Precautions 4 1 Handling Precautions 1 Since front polarizer is easily damaged pay attention not to scratch it 2 Be sure to turn off power supply when inserting or disconnecting from input connector 3 Wipe off water drop immediately Long contact wit...

Page 5: ...ent lamp in LCD contains a small amount of mercury Please follow local ordinances or regulations for disposal 13 Small amount of materials having no flammability grade is used in the LCD module The LCD module should be supplied by power complied with requirements of Limited Power Source IEC60950 or UL1950 or be applied exemption 14 The LCD module is designed so that the CFL in it is supplied by Li...

Page 6: ...te Sync TTL level Polarity Positive or Negative d H V composite Sync TTL level Polarity Positive or Negative e SOG Sync level 0 3Vp p Input connector a Analog D sub 15pin x 1 b Digital DVI I 29 pin x 1 Analog Digital c USB up stream x1 Output connector a USB down stream x 4 Display data channel DDC2B Signal frequency range a Horizontal a 1 Analog 30KHz 92KHz a 2 Digital 30KHz 92KHz 1 Hz Note 1 The...

Page 7: ...th 381mm Accessories Power cable 1 8m CD ROM HD15 HD15 cable DVI D DVI D cable 3 Regulatory Standard certification Regulatory standards UL cUL FCC B CB CE ENERGY NOM TUV GS TUV ERGO covers ISO13406 2 MPRII TCO99 for VP231wb GOST R 20 ORIGINAL COPIES HYGIENIC SASO PCBC VCCI BSMI CCC PSB C TICK Note 1 Luminance variation FIG 1 Luminance test point L 495 36mm W 309 6mm 10 50 90 10 50 90 BU 1 3 B MAX ...

Page 8: ... ViewSonic Corporation Confidential Do Not Copy VP231wb Mode No 10 11 12 13 14 15 16 17 18 19 Mode Name VESA 800 x 600 VESA 800 x 600 VESA 800 x 600 VESA 800 x 600 MAC 832 x 624 VESA 1024 x 768 VESA 1024 x 768 XGA 1024 x 768 VESA 1024 x 768 VESA 1024 x 768 Horizontal Freq KHz 37 879 48 077 46 875 53 674 49 727 48 363 56 476 58 099 60 023 68 677 Video clock Freq 40 000 50 000 49 500 56 250 57 285 6...

Page 9: ...75 062 60 000 74 857 60 020 75 025 85 024 60 000 60 000 59 950 30 00 Sync Polarity V total Lines 915 1000 1005 1066 1066 1072 750 1250 1235 562 5 V sync Lines 3 3 4 3 3 3 5 3 6 5 V back porch Lines 39 36 38 38 38 44 20 46 26 15 V active Lines 870 960 960 1024 1024 1024 720 1200 1200 1080 V front porch Lines 3 3 1 1 1 5 1 3 ViewSonic Corporation Confidential Do Not Copy VP231wb Appendix B EEPROM co...

Page 10: ... 20 00 00 110 00 FC 00 56 50 32 33 31 77 62 120 0A 20 20 20 20 20 00 F1 c 128 bytes of EDID code for VP231wb digital 0 1 2 3 4 5 6 7 8 9 0 00 FF FF FF FF FF FF 00 5A 63 10 19 69 01 01 01 01 01 0E 01 03 20 80 32 1F 78 2E CF B1 A3 55 49 30 99 25 10 50 54 BF EF F0 D1 00 40 A9 40 81 80 81 40 71 4F 61 59 50 45 59 31 0A 28 3C 80 A0 70 B0 60 23 40 30 20 36 00 EF 36 11 00 70 00 1A 00 00 00 FF 00 50 33 32 ...

Page 11: ...the buttons on the front control panel to display and adjust the OnView controls which display on the screen The OnView controls are explained at the top of the next page and are defined in Main Menu Controls on pages 9 ViewSonic Corporation Confidential Do Not Copy VP231wb 8 ...

Page 12: ... adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust your computer s graphic card so that it outputs a video signal 1920x1200 60Hz to the LCD display Look for instructions on changing the refresh rate in your graphic card s user guide If necessary make small adjustments using H POSITION and V POSITION until the screen image is completely ...

Page 13: ...just provides several color adjustment modes preset color temperatures and RGB which allows you to adjust red R green G and blue B separately The factory setting for this product is 6500K 6500 Kelvin Audio Adjust sRGB sRGB is quickly becoming the industry standard for color management with support being included in many of the latest applications Enabling this setting allows the LCD display to mor...

Page 14: ...20x1200 60Hz recommended means that the resolution is 1920x1200 and the refresh rate is 60 Hertz Manual Image Adjust displays the Manual Image Adjust menu The Manual Image Adjust controls are explained below Horizontal Position moves the screen image left or right Vertical Position moves the screen image up or down Horizontal Size adjusts the width of the screen image Fine Tune sharpens focus by a...

Page 15: ... and control screen PIP Swap allows you to swap the main and sub window PBP watch two programs simultaneously by splitting the screen in half Zoom use to change various digital zoom modes Setup Menu displays the menu shown below The Setup Menu controls are explained below Language allows you to choose the language used in the menus and control screens ViewSonic Corporation Confidential Do Not Copy...

Page 16: ...ws you to move the on screen display menus and control screens OSD Timeout sets the length of time an on screen display screen is displayed For example with a 15 second setting if a control is not pushed within 15 seconds the display screen disappears OSD Background allows you to turn the On Screen Display background on or off Memory Recall returns adjustments to the original factory settings if t...

Page 17: ...00 and 640x400 mode when input 720x400 or 640x400 mode 1 UP DOWN White Balance keep press 5 seconds 2 UP DOWN Video Mirror Function 1 DOWN Power Lock Power Unlock keep press 10 seconds 1 UP OSD Lock OSD Unlock keep press 10 seconds DC Power 2 UP Copy EDID to E2 PROM DC Power 1 Factory mode Burn in mode on DC Power 2 DOWN Burn in mode on DC Power UP DOWN Burn in mode off DC Power 2 All mode recall ...

Page 18: ...y D sub 4 4 Scalar The gm1601H is a dual channel graphics and video processing IC for Liquid Crystal Display LCD monitors and televisions incorporating Picture in Picture up to WUXGA output resolutions The gm1601H provides all key IC functions required for image capture processing and display timing control On chip functions include a high speed triple ADC and PLL Ultra Reliable DVI receiver high ...

Page 19: ...mbination of power on and off signal on and off erratic wrong frequency or noisy inputs while at any possible unplugging of power or signal settings of user accessible controls likewise the monitor should survive extended periods of operation with line voltage reduced below the specified minimum 7 An isolation transformer should be used when performing alignment and tests Portions of the power sup...

Page 20: ...tern Push up key into factory mode OSD Select Auto BI function Select S RGB 9300K 6500K 5400K 5000K to adjust RGB gain and save color Select Copy TODS Copy TODA and Copy TODD Function ISP new program to LCD Do initial function push 1 up down AC on ff 3 second Push key Exit adjust OSD Do All mode recall function push 2 key DC power ISP new program option 1 ViewSonic Corporation Confidential Do Not ...

Page 21: ...d m2 Both analog DVI 5 2 1 4 5400K alignment 5 2 1 4 1 Input 1900x1200 60Hz full white pattern at 100IRE 5 2 1 4 2 Adjust R G and B Gain to meet following chromaticity spec 5400K x 0 335 0 005 y 0 350 0 005 Y 180cd m2 Both analog DVI 5 2 1 5 5000K alignment 5 2 1 5 1 Input 1920x1200 60Hz full white pattern at 100IRE 5 2 1 5 2 Adjust R G and B Gain to meet following chromaticity spec 5000 K x 0 346...

Page 22: ...at Color tangent 4 Gray scale 16 steps Noise Beat Gamma distortion 5 1dot ON 1dot OFF pattern Noise Flicker 6 40IRE gray raster Noise Beat Gamma distortion a VG828 digital pattern generator b TTL DVI D single link cable a 1920x1200 75K 60Hz reduce blank timing b 16 32 64 256 horizontal grays scales c 16 32 64 256 vertical grays scales 495 36mm 309 6mm g4 g2 g1 g3 FIG 2 ViewSonic Corporation Confid...

Page 23: ...ution Notice Enabled 720x400 640x400 720x400 User color 50 Language English Clear burn in mode Clear user mode table ViewSonic Corporation Confidential Do Not Copy VP231wb 5 2 3 Factory preset 5 2 3 2 Factory shipment setting 5 2 3 1 All mode recall setting 5 2 3 2 1 Main power switch Off 5 2 3 2 3 Others setting same as All mode recall setting 5 2 3 2 2 AC power button Off 20 ...

Page 24: ...e item d need pass the test 0543 PID 1169 ViewSonic Corporation Confidential Do Not Copy VP231wb 21 5 2 4 Power management tests 5 2 5 DDC test 5 2 6 USB test Power consumption test table 5 2 5 1 DDC EDID specification compliance requirement 5 2 5 2 IC954 EEPROM data see Appendix B item a 5 2 6 1 With USB test HUB UPT2 USB2 0 8 port tester to test USB UP stream down stream each port 5 2 5 3 The ED...

Page 25: ..._gm1601 exe 518 506 486 037 應用程式 2003 8 21 上午 DC22A99 ViewSonic Corporation Confidential Do Not Copy VP231wb 1 0 Set LCD Monitor to Burn In mode Down key 2 key DC power on 2 0 Set LCD Monitor to Factory mode 1 key DC power on 3 0 Into Factory mode Press up key 3 1 Select Color temperature sRGB and press 2 Key The R G B Gain value can be adjust and note 3 2 Note R G B Gain value of all color temper...

Page 26: ...6 0 Click Gprobe 4 Gprobe ViewSonic Corporation Confidential Do Not Copy VP231wb 23 ...

Page 27: ...Tools 7 2 Connect ISP Tool to COM1 7 3 Connect ISP Tool to Display Connect to COM 1 Connect to D Sub Output 12V COM port Connect to COM 1 D Sub Connect to D Sub Signal cable ViewSonic Corporation Confidential Do Not Copy VP231wb 24 ...

Page 28: ...8 0 Confirm connection setup ViewSonic Corporation Confidential Do Not Copy VP231wb 25 ...

Page 29: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 26 ...

Page 30: ...8 1 Open BATCH file in Gprobe 4 ViewSonic Corporation Confidential Do Not Copy VP231wb 27 ...

Page 31: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 28 ...

Page 32: ...9 0 Open VP231BATCH ViewSonic Corporation Confidential Do Not Copy VP231wb 29 ...

Page 33: ...10 0 Key in BATCH VP231BATCH TXT ViewSonic Corporation Confidential Do Not Copy VP231wb 30 ...

Page 34: ...11 0 Press Enter key 12 0 Remove ISP tool 13 0 EEPROM initial 1key up key down key AC Power off on ISP finish ViewSonic Corporation Confidential Do Not Copy VP231wb 31 ...

Page 35: ...Adjust RGB gain and save color 5 Select CopyToDA CopyToDD function 6 Push 1 key to Exit adjust OSD 7 Do All mode recall function Push 2 key DC power on 1 Set LCD Monitor to Burn In mode Down key 2 key DC power on 2 Input Chross hatch 640 x 350 70 Hz 3 Do auto adjust 4 Input Chross hatch 640 x 400 70 Hz 5 Use Hot key function 1 key 2 key to change mode to 640 x 400 70 Hz 7 Input Chross hatch 720 x ...

Page 36: ...onnected between CN251 and Adaptor Check that C262 positive is at 5V Failure point FB251 FB251 failure Failure point D251 IC251 L251 Q255 failure Check 1 IC255 is O P 3 3V 2 IC253 is O P 1 8V 3 IC256 is O P 2 5V 4 IC252 is O P 3 3V Yes Yes Yes No No No Failure point IC255 IC253 IC252 IC256 No ViewSonic Corporation Confidential Do Not Copy VP231wb 33 ...

Page 37: ...power on and DC power on Check that C265 positive is at 18V LED is light or not Follow item 6 1 Q258 D252 L263 L254 Check C276 pin8 is 18V Q251 Q262 failure Inverter failure Yes Yes Yes Yes No No No ViewSonic Corporation Confidential Do Not Copy VP231wb 34 ...

Page 38: ...int 1 IC401 failure 2 Signal cable is disconnected Yes Yes No IC606 IC607 Failure 6 4 Keypad cannot work Check the the cable is fully conneted between the interface board and key board Q401 Q402 Q403 Q404 failure Failure point The keypad is disconnected Yes Failure point No ViewSonic Corporation Confidential Do Not Copy VP231wb 35 ...

Page 39: ... M4 0 7 10 FF C S18C ZN BLK M SCW 0824 0775 3105123700 4 27 SCREW M M3 0 5 6 FF C S18C ZN M SCW 0824 0776 3105221000 4 28 SCREW M M3 0 5 4 FF C S18C ZN M SCW 0824 0777 3105225300 9 29 WASHER SPRING SWRT M MS 0808 8040 3110250000 4 30 BRACKET PANEL SECC 528 7 338 1 T1 HW 00000642 3460177800 1 31 BRACKET D SUB SECC 224 5 43 2 T1 HW 00000643 3460193800 1 32 SHIELD CAN IF SPTH 226 7 150 9 T 3 HW 00000...

Page 40: ...LK 1 35 PL PD 0714 0109 3240973001 RUBBER PAD OD10 T5 GRAY 2 36 M MS 0808 8627 3241127400 INSULATOR PC 231 13 T 5 1 37 PL NB 0707 0192 3360624900 POWER KNOB POM M270 MIDNIGHT GRAY S8LRB1 1 38 M CV 0830 2446 3362010801 COVER VESA ABS MIDNIGHT GRAY 2 S8LRB1LS 1 39 N A 4020374207 PLASTIC ABS 94HB MIDNIGHT GRAY 2 D 180 64 40 N A 4020374208 PLASTIC ABS 94HB MIDNIGHT GRAY 2 HF 380 64 41 N A 4020374209 P...

Page 41: ...3700 CABINET BACK PC ABS MIDNIGHT GRAY 2 S3LR 1 104 N A 4020376408 PLASTIC PC ABS 94 5V MIDNIGHT GRAY 2 GN 620 105 N A 4020376409 PLASTIC PC ABS 94 5V MIDNIGHT GRAY 2 NH 620 106 N A 4020377317 PLASTIC PC ABS 94 5V MIDNIGHT GRAY 2 CU6 620 107 M MS 0808 8561 3460146100 BRACKET VESA SECC 110 20 T1 1 108 M MS 0808 8563 3460146300 BRACKET KEYLOCK SECC 20 4 16 45 4 9 T 6 1 109 C 00000634 3368313402 F B ...

Page 42: ...0W ZERO J 0603 1 177 E R 0405 7041 0343000300 RES CH 1 10W ZERO J 0603 1 178 E R 0405 7041 0343000300 RES CH 1 10W ZERO J 0603 1 179 E R 0405 7041 0343000300 RES CH 1 10W ZERO J 0603 1 180 E R 0405 7041 0343000300 RES CH 1 10W ZERO J 0603 1 181 E R 0405 7041 0343000300 RES CH 1 10W ZERO J 0603 1 182 E R 0405 7049 0343100300 RES CH 1 10W 10 J 0603 1 183 N A 0343101100 RES CH 1 8W 100 J 0805 1 184 E...

Page 43: ...0 RES CH 1 10W 150 J 0603 1 248 N A 0343151300 RES CH 1 10W 150 J 0603 1 249 N A 0343151300 RES CH 1 10W 150 J 0603 1 250 N A 0343151300 RES CH 1 10W 150 J 0603 1 251 N A 0343151300 RES CH 1 10W 150 J 0603 1 252 N A 0343203300 RES CH 1 10W 20K J 0603 1 253 N A 0343220100 RES CH 1 8W 22 J 0805 1 254 N A 0343220100 RES CH 1 8W 22 J 0805 1 255 E R 0405 7055 0343221300 RES CH 1 10W 220 J 0603 1 256 E ...

Page 44: ...16W 33 J 8P4R 1206 1 322 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 323 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 324 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 325 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 326 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 327 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 328 N A 0619901105 RES ARRAY 1 16W 33 J 8P4R 1206 1 329 N A 0619901...

Page 45: ...93 E C 0404 4878 1511514000 CAP MC CP 50V 22P J C0G 0603 1 394 E C 0404 4878 1511514000 CAP MC CP 50V 22P J C0G 0603 1 395 E C 0404 4878 1511514000 CAP MC CP 50V 22P J C0G 0603 1 396 E C 0404 4878 1511514000 CAP MC CP 50V 22P J C0G 0603 1 397 E C 0404 4878 1511514000 CAP MC CP 50V 22P J C0G 0603 1 398 E C 0404 4878 1511514000 CAP MC CP 50V 22P J C0G 0603 1 399 N A 1511518000 CAP MC CP 50V 33P J C0...

Page 46: ...517658000 CAP MC CP 50V 1U Z Y5V 0603 1 465 E C 0404 4497 1517658000 CAP MC CP 50V 1U Z Y5V 0603 1 466 E C 0404 4497 1517658000 CAP MC CP 50V 1U Z Y5V 0603 1 467 E C 0404 4497 1517658000 CAP MC CP 50V 1U Z Y5V 0603 1 468 E C 0404 4497 1517658000 CAP MC CP 50V 1U Z Y5V 0603 1 469 E C 0404 4497 1517658000 CAP MC CP 50V 1U Z Y5V 0603 1 470 E C 0404 4497 1517658000 CAP MC CP 50V 1U Z Y5V 0603 1 471 E ...

Page 47: ... Y5V 0603 1 536 N A 15A7667000 CAP MC CP 10V 1U Z Y5V 0603 1 537 N A 15A7667000 CAP MC CP 10V 1U Z Y5V 0603 1 538 N A 15A7667000 CAP MC CP 10V 1U Z Y5V 0603 1 539 E C 0405 4321 15A7691100 CAP MC CP 10V 10U Z Y5V 0805 1 540 E C 0405 4321 15A7691100 CAP MC CP 10V 10U Z Y5V 0805 1 541 E C 0405 4321 15A7691100 CAP MC CP 10V 10U Z Y5V 0805 1 542 E C 0405 4321 15A7691100 CAP MC CP 10V 10U Z Y5V 0805 1 5...

Page 48: ...20700207 DIO SW 0 215A 75V SOT 23 SE 1 608 E D 0403 2049 204520700207 DIO SW 0 215A 75V SOT 23 SE 1 609 E D 0403 2049 204520700207 DIO SW 0 215A 75V SOT 23 SE 1 610 E D 0403 2049 204520700207 DIO SW 0 215A 75V SOT 23 SE 1 611 E D 0403 2049 204520700207 DIO SW 0 215A 75V SOT 23 SE 1 612 E D 0403 2049 204520700207 DIO SW 0 215A 75V SOT 23 SE 1 613 N A 204520700305 DIO SW 0 2A 70V SOT 23 C C 1 614 N ...

Page 49: ... 3500631800 EMBOSSED PLASTIC CHIP CARRIER TAPE 0 003 680 N A 3510425000 TRAY PAPER 366 346 75 0 002 681 N A 3511031000 CARTON 366 180 386 0 001 682 N A 3511204200 ANGLE PAPER BOARD 170 55 55 5 0 0 003 683 N A 3520130300 PREVENT OXIDIZATION 1 7g 0 003 684 N A 3520146300 COVER TAPE FOR REEL 26 685 N A 3520148800 3520148700 3520146600 ASSY 0 003 686 M CV 0830 2317 3520146600 COVER REEL 13 0 008 687 N...

Page 50: ...STIC CHIP CARRIER 0 027 752 N A 4011451200 WIRE CU 0 3 2UEWN NAT MW 80 1 4 753 N A 4011451203 WIRE CU 0 3 2UEWN NAT MW 80 1 4 754 N A 4011451205 WIRE CU 0 3 2UEWN NAT MW 80 1 4 755 N A 4011451207 WIRE CU 0 3 2UEWN NAT MW 80 1 4 756 N A 4011451300 WIRE CU 0 3 2UEWN RED MW 80 1 4 757 N A 4020132500 EPOXY ADHESIVE EP382 15 0 2 758 N A 4020140700 ADHESIVE EPOXY EP399 KS 0 01 759 N A 4020209600 SOLDER ...

Page 51: ... 001 827 N A 3500607300 EMBOSSED CHIP CARRIER SI65 0 015 828 N A 3510724300 BOX PAPER 366 346 59 0 001 829 N A 3511031200 CARTON 378 396 142 0 001 830 N A 3511204100 ANGLE PAPER BOARD 130 55 55 5 0 001 831 N A 3520130300 PREVENT OXIDIZATION 1 7g 0 001 832 N A 3520147000 REEL ASSY 13 W 16 A 330 0 001 833 M CV 0830 2317 3520146600 COVER REEL 13 0 001 834 N A 3520146800 PLASTIC REEL W 16 A 330 0 001 ...

Page 52: ...CH 100MHZ 120 OHM 4A 1206 1 874 N A 2970044701 PWB M0 L6 FR 4 215 126 I F BD 1 875 N A 3020016000 PLCCIC SOCKET PPS 94V0 PB 1 876 N A 3071298034 HEADER NYLON66 UL 94V 0 14PIN 1 877 N A 3071592334 HEADER PBT 94V 0 2 15P P2 R 1 878 N A 3072214457 CONN USB STACKED R A DIP A TYPE 2 879 N A 3072228500 CONN DC JACK 1 880 N A 3072241500 CONN USB PB DOUBLE A TYPE 2 881 N A 3072241600 CONN USB PB B TYPE 1 ...

Page 53: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 Exploded Diagram And Spare Parts List 8 1 Exploded Diagram 50 ...

Page 54: ...REAR 1 14 HW 00000656 3461753900 HINGE SECC 1 15 M MS 0808 8573 3470307501 WIRE SADDLE NYLON66 94V2 1 16 M CV 0830 2445 3361207000 COVER STAND BOTTOM 3 17 M MS 0808 8635 3460151002 BRACKET BASE3 SECC 173 190 4 T2 1 18 M MS 0808 8632 3460150703 BRACKET BASE2 SECC 173 190 4 T2 1 19 M MS 0808 8636 3460151102 BRACKET BASE1 SECC 173 190 4 T2 1 20 PL PD 0714 0101 3240968900 RUBBER PAD 20 20 T3 BLK 1 21 ...

Page 55: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 2 Disassembly of Front Cover Module and LCD Panel 52 ...

Page 56: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 3 Disassembly of Mechanical Back Cabinet 53 ...

Page 57: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 4 Disassembly of Mechanical Stand 54 ...

Page 58: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 55 ...

Page 59: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 9 Block Diagram 56 ...

Page 60: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 10 Schematic Diagrams 57 ...

Page 61: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 58 ...

Page 62: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 59 ...

Page 63: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 60 ...

Page 64: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 61 ...

Page 65: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 62 ...

Page 66: ...11 PCB Layout Diagrams Main Board ViewSonic Corporation Confidential Do Not Copy VP231wb ViewSonic Corporation Confidential Do Not Copy VP231wb 63 ...

Page 67: ...ViewSonic Corporation Confidential Do Not Copy VP231wb ViewSonic Corporation Confidential Do Not Copy VP231wb 64 ...

Page 68: ...909 839 7943 You may also e mail any suggestions to the Director Quality Systems Processes marc maupin viewsonic com d o o G t n e l l e c x E Precautions And Safety Notices 1 8 Exploded Diagram and Spare Parts List 7 Recommended Spare Parts List Adjusting Procedure 2 Specification 5 4 Circuit Description 3 6 Trouble Shooting Flow Chart Front Panel Function Control Description 9 Block Diagram 10 S...

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