ViewSonic vp231wb Service Manual
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ViewSonic vp231wb Service Manual

23" color tft
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Service Manual

ViewSonic VP231wb
Model No. VS10092
23" Color TFT LCD Display
(VP231wb_SM_942 Rev. 1a Nov. 2004)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

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

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    4. Circuit Description 5. Adjusting Procedure 6. Trouble Shooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram And Spare Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 4: Precautions And Safety Notices

    Reflector edge softly. Otherwise the TFT Module may be damaged. (10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate nor tilt the Interface Connector of the TFT Module. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 5 (14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit (IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit. Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 6: Specification

    For 230V Power Consumption: Less then 120W. On mode. Less then 4W. Active off mode. Less then 4W. DC power off. PIP/PBP mode Sub screen can’t over 110MHz (1280x1024 64K/60Hz) in PIP/PBP mode Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 7 3. Regulatory & Standard certification. Regulatory standards UL, cUL, FCC-B, CB, CE, ENERGY, NOM, TUV/GS, TUV ERGO (covers BSMI, CCC, (PSB), (C-TICK), ISO13406-2 & MPRII), TCO99 (for VP231wb), TUV-S, GOST-R + 20 ORIGINAL COPIES HYGIENIC, (SASO), PCBC, VCCI Note.1: Luminance variation: BU = L = 495.36mm / W = 309.6mm...
  • Page 8 60.317 72.188 75.000 85.061 74.553 60.004 70.069 72.082 75.029 84.997 Sync. Polarity ＋ ＋ ＋ ＋ － － － － ＋ ＋ V. total (Lines) V. sync. (Lines) V. back porch (Lines) V. active (Lines) V. front porch (Lines) Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 9 (Lines) V. back porch (Lines) V. active (Lines) 1024 1024 1024 1200 1200 1080 V. front porch (Lines) Appendix B: EEPROM contents. a. IC954 128 bytes EEPROM of VSC USB Vendor ID. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 10 128 bytes of EDID code for VP231wb analog. c. 128 bytes of EDID code for VP231wb digital. Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 11: Front Panel Function Control Description

    Use 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. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 12 ˙ If necessary, make small adjustments using H POSITION and V POSITION until the screen image is completely visible. (The black border around the edge of the screen should barely touch the illuminated “ active area ” of the LCD display.) Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 13 6500K — Adds red to the screen image for warmer white and richer red. 5400K — Adds green to the screen image for a darker color. 5000K — Adds blue and green to the screen image for a darker color. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 14 1:1 adjusts the video signal so that the height and width of the picture are the same. Fill all adjusts the video signal to fill the screen. Fill Aspect Ratio maintains the correct video signal proportions for different resolutions. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 15 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. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 16 Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed in this user guide. Exception: This control does not affect changes made with the User Color control. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 17 DC-Power + [ 2 ] + [ DOWN ]. Burn in mode on. DC-Power + [ UP ] + [ DOWN ]. Burn in mode off. DC-Power + [ 2 ]. All mode recall. AC-Power on . Enter ISP mode. Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 18: Circuit Description

    D-sub and DVI-A signal select VP231wb analog source have D-sub and DVI-A signal input. User only one chose to display D-sub or DVI-A signal. IC607(AD8186) is a R, G, B signal switch IC. If Control signal (RGBSEL) is high, LCD will display DVI-A.

  • Page 19: Adjusting Procedure

    8.3 Interference of EMI: The inspection shall be carried out in the place where a set is not disturbed by external unnecessary electric wave and magnetic field. 8.4 Temperature: 24 ± 2 8.5 Humidity: 65 ± 20%. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 20 5400K, 5000K to adjust” RGB gain and “save color” Select “Copy TODS”, “Copy Push Do “All mode recall” function TODA”, and “Copy TODD” Exit adjust OSD push “2 key + DC power” Function Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 21 Input 1920x1200 / 60Hz & 16 grays pattern at 100IRE, adjust brightness 100%, and contrast 100%. 5.2.1.7.4 9300K / 6500K / 5400K / 5000K, the 16 grays saturation must be less than 4 bar. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 22 “TTL” DVI-D single link cable. 5.2.2.3.2.2 Test condition: a. 1920x1200 75K / 60Hz reduce blank timing. b. 16, 32, 64, 256 horizontal grays scales. c. 16, 32, 64, 256 vertical grays scales. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 23 English. Clear burn in mode. Clear user mode table. 5.2.3.2 Factory shipment setting: 5.2.3.2.1 Main power switch: Off. 5.2.3.2.2 AC power button: Off. 5.2.3.2.3 Others setting same as “All mode recall” setting. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 24 VESA EDID version 3.0 standard. 5.2.5.2 IC954 EEPROM data see Appendix-B item a. 5.2.5.3 The EDID data see Appendix-B, VP231wb analog & DVI-A are same as item b, the DVI-D input1 see item c, the DVI-D input 256bytes EDID see item d.
  • Page 25 GOff Boff Save Color CopyToDS CopyToDA CopyToDD 4.0 Install Gprobe 5.0 Install Gprobe_1601 Gprobe Gprobe4.4.0.2.exe 3,055,471 3,014,541 2003/8/22 下午 … 5D01EE60 應用程式 Gprobe 1601 Gprobe4.2.0.3_gm1601.exe 518,506 486,037 2003/8/21 上午 … DC22A99 應用程式 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 26 6.0 Click Gprobe 4 Gprobe:> Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 27 Output 12V Connect to D-Sub Connect to COM 1 7.2 Connect ISP Tool to “COM1” COM port Connect to COM 1 7.3 Connect ISP Tool to “Display”. D-Sub Signal cable Connect to D-Sub Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 28 8.0 Confirm connection setup Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 29 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 30 8.1 Open BATCH file in Gprobe 4 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 31 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 32 9.0 Open VP231BATCH Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 33 10.0 Key in “BATCH VP231BATCH.TXT” Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 34 11.0 Press Enter key ISP finish 12.0 Remove ISP tool 13.0 EEPROM initial(1key+up key + down key+ AC Power off/on) Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 35 (7) Input Chross-hatch 720 x 400/ 70 Hz (8) Use Hot key function “1 key +2 key” to change mode to 720 x 400/ 70 Hz. (9) Do “All mode recall” function.(Push “2 key +DC power on”) Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 36: Trouble Shooting Flow Chart

    D251, IC251, L251, Q255 failure Failure point Check: 1. IC255 is O/P 3.3V. 2. IC253 is O/P 1.8V. IC255, IC253, IC252, IC256 3. IC256 is O/P 2.5V. 4. IC252 is O/P 3.3V. Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 37 AC power on and DC power on Check that C265 positive is at 18V LED is light or not? Follow item 6.1 Check C276 pin8 is 18V Q258, D252, L263, L254 Inverter failure Q251, Q262 failure Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 38 IC606, IC607 Failure Keypad cannot work. Check the the cable is fully conneted between the interface board and key board Failure point Failure point Q401. Q402. Q403, Q404 failure The keypad is disconnected. Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 39: Recommended Spare Parts List

    7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VP231wb-1) ViewSonic Model Number: VS10092 Rev: 1a Item Description ECR/ECN ViewSonic P/N Ref. P/N Q'ty Accessories: ADP 90-264VAC 24VDC 5A A-00000630 0993031802 AC POWER CORD L=1800 BLACK UL/CSA A-PC-0106-0150 3090107600 LCD I/F BD ASSY L23ABW 05AAB...
  • Page 40 0.125 M-MS-0808-8556 3200649100 NAME PLATE VSC 3-BIRD LOGO AL 11.07*7.92 M-LB-0813-0978 3200787200 LABEL BAR CODE 124*82 DC-00000638 3201980800 LABEL ID 100*50 VSC VP231WB M-LB-0813-0900 3202011000 LABEL SERIES PANEL 42*11 T0.05 M-LB-0813-0714 3202310700 LABEL HV WARNING 100*25 DC-00000639 3209216600 LABEL USB 35*20 VSC VP SERIES...
  • Page 41 M-MS-0808-8559 3360506800 LED LENS ABS 1865-12 S8LRB1LS #N/A 4020370614 PLASTIC ABS 94HB 1865-12 PA-758 C-00000634 3361094102 F/B PC+ABS MIDNIGHT GRAY-2 VP231WB S3LFA #N/A 4020376408 PLASTIC PC+ABS 94-5V MIDNIGHT GRAY-2 GN- #N/A 4020376409 PLASTIC PC+ABS 94-5V MIDNIGHT GRAY-2 NH- #N/A 4020377317...
  • Page 42 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty CB-00000636 3679026800 WIRE WITH HOUSING 1007 #26 L180 14P CB-00000637 3679026901 WIRE WITH HOUSING 1571 #28 L230 30P E-00000654 5052300050 LCD 23" TFT PANEL WUXGA TMDS B-00000631 5600110266 LCD I/F BD ASSY L23ABW 05AAB...
  • Page 43 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty E-R-0405-6685 0343103300 RES CH 1/10W 10K J 0603 E-R-0405-6685 0343103300 RES CH 1/10W 10K J 0603 E-R-0405-6685 0343103300 RES CH 1/10W 10K J 0603 E-R-0405-6685 0343103300 RES CH 1/10W 10K J 0603...
  • Page 44 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty E-R-0405-7031 0343472300 RES CH 1/10W 4.7K J 0603 E-R-0405-7035 0343473300 RES CH 1/10W 47K J 0603 #N/A 0343512300 RES CH 1/10W 5.1K J 0603 #N/A 0343512300 RES CH 1/10W 5.1K J 0603...
  • Page 45 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty E-C-0404-5322 149024701208 CAP AL CP 6.3V 47U M 5*5.5 E-C-0404-5322 149024701208 CAP AL CP 6.3V 47U M 5*5.5 E-C-0404-5322 149024701208 CAP AL CP 6.3V 47U M 5*5.5 E-C-0404-5322 149024701208 CAP AL CP 6.3V 47U M 5*5.5...
  • Page 46 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603 E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603 E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603 E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603...
  • Page 47 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603 E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603 E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603 E-C-0404-4497 1517658000 CAP MC CP 50V .1U Z Y5V 0603...
  • Page 48 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty #N/A 204520700205 DIO SW 0.215A 70V SOT-23 SE. #N/A 204520700205 DIO SW 0.215A 70V SOT-23 SE. #N/A 204520700205 DIO SW 0.215A 70V SOT-23 SE. #N/A 204520700205 DIO SW 0.215A 70V SOT-23 SE.
  • Page 49 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty #N/A 2500058910 IC REGU 1.8V 0.8A SOT-223 #N/A 2500058937 IC REGU 1.8V 0.8A SOT-223-3P #N/A 2500082637 IC REGU LDO 2.5V 5A TO-252 #N/A 2500082837 IC REGU LDO 3.3V 5A TO-252 E-IC-0401-2927 2500088636 IC VOL DETECTOR 4.4V SOT-23...
  • Page 50 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty #N/A 3520148700 PLASTIC REEL W=24 0.004 #N/A 3520214800 AIR BUBBLE BAG 0.002 #N/A 3520802500 EMBOSSED PLASTIC CHIP CARRIER 25.4 #N/A 4011457003 WIRE CU 0.37 2UEWN NAT MW-28 0.473 #N/A 4011457007 WIRE CU 0.37 2UEWN NAT MW28 0.473...
  • Page 51 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty #N/A 4020209700 SOLVENT THINNER YS-08 0.01 M-MS-0808-5165 4020500500 INK BLACK 0.05 #N/A 4090004200 SOLDER BAR 95/5 #N/A 4162230300 CORE FERI DR10*7 F4D F:5 B:5.5 UI=600 #N/A 4166280300 CORE FERI C 12*10.85*6.8 F4D...
  • Page 52 Item ViewSonic P/N Ref. P/N DESCRIPTION Location Q'ty E-L-0408-1518 2921113212 BEAD CH 100MHZ 120 OHM 4A 1206 E-L-0408-1518 2921113212 BEAD CH 100MHZ 120 OHM 4A 1206 E-L-0408-1518 2921113212 BEAD CH 100MHZ 120 OHM 4A 1206 E-L-0408-1518 2921113212 BEAD CH 100MHZ 120 OHM 4A 1206...
  • Page 53 8. Exploded Diagram And Spare Parts List 8-1 Exploded Diagram Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 54 EXPLODED PARTS LIST (VP231wb-1) ViewSonic Model Number: VS10092 Rev: 1a Item ViewSonic P/N ReferenceNumber Description Q'ty C-00000634 3361094102 F/B PC+ABS MIDNIGHT GRAY-2 VP231 WB M-MS-0808-8556 3200649100 NAME PLATE VSC 3-BIRD LOGO AL 11.07*7.92 E-00000654 5052300050 LCD 23" TFT PANEL WUXGA TMDS...
  • Page 55 8-2 Disassembly of Front Cover Module and LCD Panel Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 56 8-3 Disassembly of Mechanical Back Cabinet Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 57 8-4 Disassembly of Mechanical Stand Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 58 8-5 Disassembly of Set Packing Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 59 Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 60: Schematic Diagrams

    10. Schematic Diagrams Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 61 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 62 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 63 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 64 Confidential - Do Not Copy ViewSonic Corporation VP231wb...
  • Page 65 Confidential - Do Not Copy ViewSonic Corporation VP231wb...

  • Page 66: Pcb Layout Diagrams

    Main Board 11. PCB Layout Diagrams Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VP231wb VP231wb...
  • Page 67 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VP231wb VP231wb...
  • Page 68 We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation Assessment A.What do you think about the content after reading VP231wb Service Manual? t i n e l l Precautions And Safety Notices 2.

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