ViewSonic VA2012wb-2 Service Manual

ViewSonic VA2012w-2 VA2012wb-2 Model No. VS10859 20” Color TFT LCD Display (VA2012w-2_VA2012wb-2_SM Rev. 1a Jun. 2006) ViewSonic

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 7AUDIO INTERFACE (SPEAKER SPECIFICATION) Line input connection 3.5 mm ste

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 8 2nd Source Panel AUO M201EW01 V.0 Type MVA Technology” Active Size 43

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 9MECHANICAL Dimension (Desktop) Width 479 mm Height 423 mm Depth 216

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 3. Front Panel Function Control Description 10

Main Menu Controls Adjust the menu items shown below by using the up and down buttons. A. Auto Image Adjust automatically sizes, centers, and fine tu

4. Circuit Description 1. Outline 1.1 Power On/Off, (2) Enter button, up arrow button, down arrow button, (1) MENU button, Volume “+” button, Volume

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 132.3 Video signal connector for analog input: 15P Mini D-Sub PIN MNEMON

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 143.2.2 Power Management State Power Indicator On 47Watts Blue

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 15 4. EDID data VA2012w -2 Analog: ____

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 16(24) Power Management and Supported Feature(s): Active

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 iCopyright Copyright © 2006 by ViewSonic Corporation. All rights reserved

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 17 Active Time: 1680 pixels Blanking Time: 560 pixels

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 18 ______________________________________________________________________

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 19VA2012wb -2 Analog: ____________________________________________________

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 20 Display Type = R/G/B Color (25-34) CHROMA INFO:

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 21 Vertical: Active Time: 1050 lines Blanking Time: 39

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 226. THEORY OF OPERATION This section describes the function of the LCD mo

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 23e) On chip TMDS receiver: The NT68563HF integrated TMDS receiver, which

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 246.3 Inverter Board This is a specific inverter for VA2012 monitor 40W ba

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 255. Adjustment Procedure 1. Function test (1) Test equipment Color vi

3. Test pattern Item Test condition Pattern Specification Remark1 Frequency & performance Cross-hatch pattern No noise is allowed, all colo

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 iiTABLE OF CONTENTS 1. Precautions and Safety Notices 12. Specifica

Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 27

OSD Function Menu A. When in Analog Input Mode 1. Main Menu Press the [1] (Menu) button to enter the Main Menu: Press the [▲] button to highlight

Red, Green, Blue Options: Press the [2] button to cycle among the colors. Press the [1] bu

Press the [1] button to exit the page. Press the [▲] button to highlight the previous item or the [▼]

(9) Memory Recall Page Press the [2] button to execute the memory recall function. Press the [1] button to exit the page. 2

(3) Input Select Page: Press the [2] button to switch to analog input mode. (4) Audio Adjust Page: Press the [▲] button to increase the volume.

1) Language Select Item Press the [2] button to enter the language selection page. Press the [1] button to exit the page. Press the [▲] button

Press the [1] button to exit the page. 2. Other Menu: This “shortcut” menu is directly accessible without bringing up the O

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 35Firmware updates procedure: When you received a received monitor , p

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 362. Connection : To PC To Monitor Appendix A : How to install the s

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 11. Precautions and Safety Notices 1. Caution : No modification of any c

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 37 0.1 Double-click the “ PORT95NT.exe” in Windows & install the

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 380.3 Choose “ Typical “ then press “ Next “ , see Fig. 0.3 Fig. 0.3 0

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 390.5 Install completed , restart the PC or notebook. See Fig 0.5 Fig

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 401.3 Press “ Next “ button to continue., see Fig 1.1 Fig 1.1 1.4 Ke

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 41 1.5 Press “ Install “ button to continue , see Fig 1.3 Fi

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 42Appendix B : How to use software to upgrade the BIOS : 2.1 After

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 432.4 Press “ Create Security File “ button to key in Security code . A

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 44Appendix C : Use ISP to program MCU 3.1 Select MTV type first , load t

dis-assembly procedureOpen back cover(5)unlock stand screw(4)take out LCD(1) put lcd on the desk with sponge(2)tear off AL FOIL(6)unlade I/o cover(3)V

tear off yellow tape and pull out lvds cable(9) tear off yellow tape(10)pull out CCFT CABLE(7) unlock shielding screw(8)unlock button/b screw(11) pul

Take out the monitor with cushioncorrect methodPlace the monitor on a clean & soft foam pad Surface of the panel is pressed by fingers &this

unlock bkt L/R screw(18)unlade speaker (13) take down shielding(14)tear off mylar and rubber(16)unlock bezel screw(17)tear off AL FOIL(15)ViewSonic Co

pull out cable from pcb'a(21)unlock pcb'a screw and reclaim mylar(19)take out pcb'a(20) ViewSonic Corporation Confidential - Do Not

(4) put lcd in carton(5) put cable&base&manual&assemble handle(6) accessories check&cover carton(3) assemble END CAP R/L(1) stick lcd

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 506. Troubleshooting Flow Chart No Power No Power Check CN6 pin 1,2 12

No Audio No Audio Output Check input signal J1 OK? Check CN7 to speaker OK? Check CN6 pin 1,2 12V correct? Check U6 pin 6 Volume and Q7 Check U6 pi

Display color abnormal Display color abnormal Check panel cable? Check open/short of IC2? Check panel power supply of Q4 Check panel Change M/B

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 537. Recommended Spare Parts List Serial No. Prefix: Q92 Rev: 1aItem EC

ViewSonic Model Number: VS10859 Rev: 1aSerial No. Prefix: Q92Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty1 N/A 1LW0VAX

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty79 DC-00006118 HGW0VA03016 CD+QSG(VA2012W-2) W0VA-2(HGW0VA03,R3A)GP 180 PL

ViewSonic Model Number: VS10859 Rev: 1aSerial No. Prefix: Q93Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty1 N/A 1LW0VAX

when assemble&disassemblybezelwhen assemble&disassemblybezelwhen assemble&disassemblybracketwhen assemble&disassemblybracketViewSon

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty67 N/A ME40200PJ28 SCREW T4.0*20.0-P(BNI) GP 268 N/A MM40100BL61 SCREW M

8. Exploded Diagram and Exploded Parts ListModelTitleDate Rev:ViewSonic CorporationViewSonic Corporation Confidential - Do Not Copy VA2012w-2_V

ViewSonic Model Number: VS10859Rev: 1aSerial No. Prefix: Q92Item ViewSonic P/N Ref. P/N Description Q'ty1 N/A 21W0VAMB011 W0VA-2 M/B ASSY (NOVATE

ViewSonic Model Number: VS10859Rev: 1aSerial No. Prefix: Q93Item ViewSonic P/N Ref. P/N Description Q'ty1 N/A 21W0VAMB011 W0VA-2 M/B ASSY (NOVATE

Packing for ShippingRev: 1aItem ViewSonic P/N Ref. P/N Location Q'ty1 N/A 1LW0VAXV082 VA2012w-2 monitor 12 P-00004161 HBW0VA01019 END CAP (L) 13

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 629. Block Diagram VGAI/PMcuNT 68F633LLCD PANELEEPROM24LC16Power BoardS

10. Schematic Diagrams CH201209T-300CH201209T-300D-SUB1CH201209T-3003BAV99RXDB15-------------------------- 1 R 2 G 3 B 4

ModelTitleDate Rev:ViewSonic CorporationDVI InputDVI InputBAV99DVI-SCLDVI-SDARXC- 5RXC+ 5RX2+ 5RX0+ 5DVI-SCL 6DVI-SDA 6RX2- 5RX1+ 5RX1- 5DVI-DET 6RX

ModelTitleDate Rev:ViewSonic CorporationNT68563OPTIONRXC+RXC-RX1-RX0+RX0-RX1+RX2+RX2-VREFVREFPVCCBYPASS-VSSCLSDARSTnIRQnBYPASS-HSDPLLPVCCREFCLKIAD0AD

ModelTitleDate Rev:ViewSonic CorporationMCU(I/O_Key)For Debug Use5V-DETECTSCLSDASCLSDAMUTEBL-PWMBL-PWMVOL-PWMVOL-PWM5V-DETECTSDASCLTXRXDOWNRIGHTLEFTP

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 42. Specification GENERAL specification Test Resolution & Frequency “

ModelTitleDate Rev:ViewSonic CorporationPANEL OUTPUT2005.06.13 modifyMax 2.0ATXB2+ T6PLCD-VDDT2PT7MT1PTXBC+ TCLK2PT5PT0MT3PTXB3+ T7PT4MTCLK1PT0PT4PTC

ModelTitleDate Rev:ViewSonic CorporationScaler Power231Max 2.5A 100mil * 4viaMax 1.2A 60mil * 3 viaBL-ONBL-BRIGHTBL-ON 6BL-BRIGHT 6GND_AGND_AGND_AGND

ModelTitleDate Rev:ViewSonic CorporationAUDIOPCAUDIO-INR_LINEZ0415VOLUSPKOUTRSPKOUTLL_LINE LIN_PCZ0416 RIN_PCVOLUMUTESTANDBYVOLUME6MUTE6STANDBY6+5VAG

MB TOP11. PCB Layout Diagrams ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 70

MB TOPViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 71

MB BOTTOMViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 72

* Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products.

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 5Power Supply Transient Immunity Shall be able to withstand an ANSI/IEEE C

ViewSonic Corporation Confidential - Do Not Copy VA2012w-2_VA2012wb-2 612 800 x 600 @ 60Hz, 37.9kHz Yes N/A 13 800 x 600 @ 75Hz, 46.9kHz Ye