ViewSonic VA2012w-2 Service Manual
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ViewSonic VA2012w-2 Service Manual

ViewSonic VA2012w-2 Service Manual

20” color tft lcd display
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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 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VA2012w-2

  • Page 1: Service Manual

    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 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

    Specification Front Panel Function Control Description Circuit Description Adjustment Procedure Troubleshooting Flow Chart Recommended Spare Parts List Exploded Diagram and Exploded Parts List Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 4: Precautions And Safety Notices

    1.0 milliamp. In the case of a measurement exceeding the 1.0 milliamp value, a rework is required to eliminate the chance of a shock hazard . AC VOLTMETER 0.15u 1500 To Metal Parts Earth Ground ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 5 Place the monitor on a clean & soft foam pad scratch the surface of panel Surface of the panel is pressed by fingers & Do not touch the surface of the polarizer . this may cause “ MURA “ ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 6 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 7: Specification

    1.5 Arms @ 90VAC Inrush Current (Cold Start) 80 A(max) @230VAC Shall start and function properly when under full load, with all Power Supply Cold Start combinations of input voltage, input frequency, and operating temperature ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 8: Timing Table

    640 x 480 @ 75Hz, 37.5kHz 720 x 400 @ 70Hz, 31.5kHz 720 x 480i 59.94/60Hz @ 15.7 kHz 720 x 576p 50Hz @ 31.25kHz 720 x 576i 50Hz @ 15.62kHz 800 x 600 @ 56Hz, 35.1kHz ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 9 The monitor needs to do “Auto Adjust” the first time a new mode is detected (see section “0-Touch™ Function Actions”) While running Change Mode, Auto Adjust or Memory Recall, the image shall blank ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 10 Response Time 8 ms (Tr= 2 ms, Tf = 6 ms) (Typ) 10%-90% @ Ta=25°C 16 ms (Tr= XXX ms, Tf = XXX ms) (Max) Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 11 OSD Background Color Temperature 6500K OSD PIVOT Sharpness Resolution Notice Enabled OSD H. Position 720x400/640x400 720x400 Display Size Horizontal Display Size, Primary Preset Full Screen Vertical Display Size, Primary Preset Full Screen ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 12 The reference for the bezel is the silver color chip for VA2012w and Front Bezel Color midnight gray color for VA2012wb provided by ViewSonic The reference for the bezel is the black color chip for VA2012w and midnight gray color for VA2012wb provided by ViewSonic.

  • Page 13: Front Panel Function Control Description

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

  • Page 14: Main Menu Controls

    OSD Position allows you to move the on-screen display menus and control screens. 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. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 15: Circuit Description

    Audio volume can be controlled with Volume “+” key ,Volume “-“ key and UP/DN key when Audio Adjust menu is active. Pushing Mute key can disable audio output. 2. CONNECTORS 2.1 AC inlet : CEE22 typed connector 2.2 Audio : Line-in, Line-in receptacle (Line-in receptacle is green) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 16 Warming up > 30 min Display 1680 x 1050 3.2 POWER 3.2.1 Power supply Input voltage 100~240Vac Power frequency 50~60Hz Input current <1.5Arms@90Vac Inrush current 80A(Max) at 230Vac(cold start) Power consumption 47W(typical);50Watts(Max) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 17 Input impedance Analog video input: 75 ohm Sync input: > 1 k ohm Audio input: 10K ohm 4. SIGNAL CABLE: Signal cable with Mini D-Sub 15P connectors at both ends. Length: 1.8 meter. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 18 4. EDID data VA2012w -2 Analog: ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VA2012w-2 ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: ________________________________________ 0 | 00 FF FF FF FF FF FF 00 5A 63...
  • Page 19 (54-71) Detailed Timing / Descriptor Block 1: 1680x1050 Pixel Clock: 146.25 MHz ______________________________________________________________________ Horizontal Image Size: 430 mm Vertical Image Size: 270 mm Refreshed Mode: Non-Interlaced Normal Display - No Stereo Horizontal: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 20 Vertical: Active Time: 1050 lines Blanking Time: 39 lines Sync Offset: 3 lines Sync Pulse Width: 6 lines Border: 0 lines Frequency: 59.95 Hz Digital Separate, Horizontal Polarity (-) Vertical Polarity (+) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 21 Min Horiz. Freq - 30 KHz Max Horiz. Freq - 94 KHz Pixel Clock - 210 MHz Secondary GTF - Not Supported ______________________________________________________________________ (108-125) Detailed Timing / Descriptor Block 4: Monitor Name: VA2012w-2 (126) No Extension EDID Block(s) (127) CheckSum OK ViewSonic Corporation VA2012w-2_VA2012wb-2...
  • Page 22 VA2012wb -2 Analog: ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VA2012w-2 ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: ________________________________________ 0 | 00 FF FF FF FF FF FF 00 5A 63...
  • Page 23 Refreshed Mode: Non-Interlaced Normal Display - No Stereo Horizontal: Active Time: 1680 pixels Blanking Time: 560 pixels Sync Offset: 104 pixels Sync Pulse Width: 176 pixels Border: 0 pixels Frequency: 65.29 KHz ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 24 Min Horiz. Freq - 30 KHz Max Horiz. Freq - 94 KHz Pixel Clock - 210 MHz Secondary GTF - Not Supported ______________________________________________________________________ (108-125) Detailed Timing / Descriptor Block 4: Monitor Name: VA2012w-2 (126) No Extension EDID Block(s) (127) CheckSum OK ViewSonic Corporation VA2012w-2_VA2012wb-2...
  • Page 25 Blue + Blue - H sync V sync d) Internal OSD: Internal SRAM allows up to 2048 characters, with programmable OSD frame size. Width is 64 columns, and Height is 32 row. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 26 Volt=1.255 x (1+ R89/R87) = 3.3 6.2 Audio Amplifier UTC TDA7496L (U9) The TDA7496L is a stereo 2W+2W class AB power amplifier; Features of the TDA7496L include linear volume control, Stand-by and mute functions. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 27 Operation Input Voltage 100~240Vac, 50~60Hz Input Current <1.5A@90Vac Inrush Current <80A @ 230Vac(Cold start) OUTPUT Output Voltage Regulation +/-5% Output Ripple and Noise 300 mVp-p Rated Output Current <4.16A Turn-on Delay <3 seconds ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 28: Adjustment Procedure

    1600 x 1200 @ 75Hz, 93.8kHz 1680 x 1050 @ 60Hz, 65.3 kHz 1680 x 1050 @ 75Hz, 82.3 kHz 1920 x 1080i @ 50Hz, 56.5kHz 1920 x 1080p @ 50Hz, 62.5kHz ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 29: Viewsonic Corporation

    Full black Full black Pattern 7 5-cycle pattern 5-cycle pattern Check the BU Pattern 8 1-dot pattern 1-dot pattern Check the flicker Pattern 9 Pattern 1 Pattern2 Pattern 3 Pattern4 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 30 Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 31: Osd Function Menu

    Press the [1] button to exit the currently highlighted item. 5) User Color Item Press the [2] button to enter the user color page. Press the [1] button to exit the page. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 32 Press the [1] button to exit the page. Press “[▲]” Button to increase image sharpness. Press “[▼]“ Button to decrease image sharpness. (8) Setup Menu Page: Press the [2] button to enter the setup menu page. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 33 Press the [▲] button to highlight the previous option or the [▼] button to highlight the next option. Press the [2] button to select the highlighted option. Press the [1] button to exit the page. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 34: Other Menu

    Press the [▲] button to increase the brightness. Press the [▼] button to decrease the brightness. Press the [2] button to enter the contrast adjustment page. Press the [1] button to exit the page. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 35 Press the [2] button to enter the setup menu page. Press the [1] button to exit the page. Press the [▲] button to highlight the previous item or the [▼] button to highlight the next item. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 36 Press the [2] button to select the highlighted option. Press the [1] button to exit the page. (8) Memory Recall Page Press the [2] button to execute the memory recall function. ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 37 [2] button to enter Burn Mode. When Installing a New Main Board 1. Enter Factory Mode. 2. Use a PC or chrom to send a 32-tone gray scale signal to the monitor. 3. Select “Auto Color” ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 38 When you received a received monitor , please check whether the firmware version. If not , please following procedure to upgrade to the latest version . 1. Equipment needed : - VA2012w/b - PC ( Personal computer ) - LPT cable - Fixture (LM5ISP) - Firmware upgrade program ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 39 PC or notebook, parallel(printer) cable, ISP tooling. Software: If OS was Win2000 or WinXP , please install “PORT95NT.exe” In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 0.0 Fig 0.0 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 40 0.1 Double-click the “ PORT95NT.exe” in Windows & install the program. , see Fig 0.1 Fig 0.1 0.2 Keep on press “ Next “ 4 times to go through the installation processes, see Fig. 0.2 Fig. 0.2 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 41 0.3 Choose “ Typical “ then press “ Next “ , see Fig. 0.3 Fig. 0.3 0.4 Keep on press “ Next “ 4 times to go through the installation processes, see Fig. 0.4 Fig. 0.4 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 42 1.1 User could download ISP driver and PORT95NT install from Myson Century website (www.myson.com.tw 1.2 After extracting the ZIP file , the total files list as Fig 1.0 , and double click the file of setup.exe to install. Fig 1.0 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 43 1.4 Keep default setting or press “ Change “ button for selecting the path that you want , and then press “ Next “ button to continue , see Fig 1.2 Fig 1.2 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 44 1.5 Press “ Install “ button to continue , see Fig 1.3 Fig. 1.3 1.6 Installation has finished , press “ Finish “ button , see Fig 1.4 Fig. 1.4 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 45 2.3 The warning is used to remind user of that different CPU rate may cause ISP function fail. (it’s limited by IIC protocol ) , press “ OK “ button , see Fig 2.3 Fig. 2.3 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 46 7C , 4C , 77. The command No. and command must be set by user while coding. About the detailed of setting , please refer to section 6 boot code of ISP . Fig. 2.5 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 47 CRC ( cyclic redundancy check ) : the host can check CRC register’s result instead of reading every byte in flash. The message of Check MCU CRC OK means that the host verify OK for the progress of program , see Fig.3.2 Fig. 3.2 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 48 LCD(1) put lcd on the desk with sponge(2) unlade I/o cover(3) unlock stand screw(4) tear off AL FOIL(6) Open back cover(5) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 49 CCFT CABLE(7) unlock shielding screw(8) tear off yellow tape and pull out lvds cable(9) tear off yellow tape(10) unlock button/b screw(11) pull out button/b cable from button/b connector(12) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 50 (13) take down shielding(14) tear off AL FOIL(15) tear off mylar and rubber(16) unlock bkt L/R screw(18) unlock bezel screw(17) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 51 ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 52 (1) stick lcd film stick Front of PANEL (2) cover PE BAG (5) put cable&base&manual&assemble handle handle manual VGA&DVI manual CABLE VGA&DVI base (3) assemble END CAP R/L CABLE (6) accessories check&cover carton ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 53: Troubleshooting Flow Chart

    Check CN6 pin 1,2 Change power 12V correct? board Check U4,U3 pin2 Change U3,U4 3.3V correct? Check U5 pin 2 Change U5 1.8V correct? Check Y1 Change Y1 frequency 12MHz Change M/B ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 54 Check CN7 to Change speaker speaker OK? Change power Check CN6 pin 1,2 board module 12V correct? Check U6 pin 6 Change Q7 Volume and Q7 Check U6 Change U6 pin12(mute),p11(stby) Change M/B ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 55 Display color abnormal Display color abnormal Check panel cable? Change panel cable Check open/short Repair open/short of IC2? Check panel power Change Q4 supply of heck panel Change panel Change M/B ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 56: Recommended Spare Parts List

    Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items. Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
  • Page 57 Serial No. Prefix: Q92 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 1LW0VAXVSU5 W0VA-2 LCD MONITOR(VA2012W-2)S/B,EU GP 21W0VAMB011 W0VA M/B ASSY (NT68563H,W/O DVI) GP 31W0VASS016 W0VA M/B S/S ASSY (NT68563H,W/O DVI) GP DFDS15FR041 CONN D-SUB 15P 3R FR(P1.15,H12.55) GP DFDS15FR076 CONN D-SUB 15P 3R FR(P1.15,H12.55) GP...
  • Page 58 Ref. P/N Description Location Universal number# Q'ty DC-00006118 HGW0VA03016 CD+QSG(VA2012W-2) W0VA-2(HGW0VA03,R3A)GP PL-00001806 GAL5T001016 RUBBER-HOLDER L5TL-E(GAL5T001,REV3B)GP 28W0VAPK046 W0VA-2(VA2012W-2) PACKING ASSY(S/B)GP C-00004147 38W0VABS010 W0VA BASE SUB ASSY (S/B) GP CB-00002602 DDL7VDPC005 CABLE MB-VGA (15/15P,1.8M)L7VD GP CB-00005211 DDW9ZAPA009 CABLE AUDIO(ST,1.8M)BLACK W9ZA GP M-MS-0808-9158 HAL7V002019...
  • Page 59 BOM LIST (VA2012wb-2) ViewSonic Model Number: VS10859 Rev: 1a Serial No. Prefix: Q93 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 1LW0VAXVSW1 W0VA-2 LCD MONITOR(VA2012WB-2)EU GP 21W0VAMB011 W0VA M/B ASSY (NT68563H,W/O DVI) GP 31W0VASS016 W0VA M/B S/S ASSY (NT68563H,W/O DVI) GP DFDS15FR041 CONN D-SUB 15P 3R FR(P1.15,H12.55) GP...
  • Page 60 2AW0VAPTQ10 W0VA-2 PANEL DEPENDENT KIT ASSY(QDI)GP E-00004154 AA20AL01004 LCD(TFT) 20" QD20AL01 REV.01 GP AZW0VABQ006 W0VA-2 SW BIOS(NOVATEK,W/AUDIO)FOR QDI FBW0VA04018 PANEL HOOK W0VA(FBW0VA04,REV3A) GP DC-00006118 HGW0VA03016 CD+QSG(VA2012W-2) W0VA-2(HGW0VA03,R3A)GP PL-00001806 GAL5T001016 RUBBER-HOLDER L5TL-E(GAL5T001,REV3B)GP 28W0VAPK054 W0VA-2(VA2012WB-2) PACKING ASSY GP C-00004165 38W0VABS001 W0VA BASE SUB ASSY GP...

  • Page 61: Exploded Diagram And Exploded Parts List

    8. Exploded Diagram and Exploded Parts List ViewSonic Corporation Model Title Date Rev: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 62 EXPLODED PARTS LIST (VA2012w-2) ViewSonic Model Number: VS10859 Rev: 1a Serial No. Prefix: Q92 Item ViewSonic P/N Ref. P/N Description Q'ty 21W0VAMB011 W0VA-2 M/B ASSY (NOVATEK 68563) GP B-00004145 AS08B532009 PWR MODULE(DTA)EADP-64CF B,90~264V GP B-00005205 AS023360D18 INV MODULE(SEL)W0E(20V,I=6MA) GP B-00004142...
  • Page 63 EXPLODED PARTS LIST (VA2012wb-2) ViewSonic Model Number: VS10859 Rev: 1a Serial No. Prefix: Q93 Item ViewSonic P/N Ref. P/N Description Q'ty 21W0VAMB011 W0VA-2 M/B ASSY (NOVATEK 68563) GP B-00004145 AS08B532009 PWR MODULE(DTA)EADP-64CF B,90~264V GP B-00005205 AS023360D18 INV MODULE(SEL)W0E(20V,I=6MA) GP B-00004142...
  • Page 64 Packing for Shipping PACKING PART LIST (VA2012w-2 ) ViewSonic Model Number: VS10859 Rev: 1a Item ViewSonic P/N Ref. P/N Location Q'ty 1LW0VAXV082 VA2012w-2 monitor P-00004161 HBW0VA01019 END CAP (L) P-00004162 HBW0VA02015 END CAP (R) HGW0VA07011 USER'S MANUAL & CD A-00003642 DM33T181004 POWER CORD 3P 1.8M...

  • Page 65: Block Diagram

    9. Block Diagram ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 66: Schematic Diagrams

    -------------------------- 74LVC14 GND_A R107 GND_A VSIN R108 ZD5V6 22pF/6/NC RETURN RETURN 2.2K/6/NC RGND RGND HSIN GGND GGND GND_A GND_A GND_A BGND BGND SYNC.RETURN SYNC.RETURN ViewSonic Corporation ADC Input Model Title Date Rev: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 67: Dvi Input

    10/6 RXC+ TXC+ 10/6 RXC- TXC- SHELL2 GND_A GND_A BAV99/NC BAV99/NC BAV99/NC BAV99/NC DVI Input GND_A ADC_VAA GND_A ADC_VAA GND_A ADC_VAA GND_A ADC_VAA ViewSonic Corporation BAV99 Model DVI Input Title Date Rev: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 68 RSTn IRQn IRQn IRQn REFCLKI REFCLKI OSCI OSCO GND_A BYPASS-VS BYPASS-VS IN_VSO/GPO4 GPO1 BYPASS-HS BYPASS-HS IN_HSO/GPO5 REFCKO/GPO6 GPO7 AD0/GPO2 GPO8 AD1/GPO3 GPO9/PWM1 GPO10/PWM0 ViewSonic Corporation GND_A NT68563 Model Title GND_A Date Rev: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 69 330/6 LEDA LEDA 330/6 LEDG LEDG1 4.7K/6 CON11P-2.0S MMST3906 GND_A LEDG GND_A MUTE- LEFT- RIGHT- DOWN- PWR- SEL- MENU- ViewSonic Corporation GND_A GND_A GND_A GND_A GND_A GND_A GND_A GND_A MCU(I/O_Key) Model MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD Title...
  • Page 70 Max 2.0A +18V BEAD 120/1206 +12V BEAD 120/1206/NC BEAD 120/1206/NC LCD-VDD SI9435 4.7K/6 BEAD 120/1206 2.2K/6 GND_A GND_A GND_A 4.7K/6 LCD-ON MMBT3904 2005.06.13 modify ViewSonic Corporation Model PANEL OUTPUT Title GND_A Date Rev: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 71 ADJ/GND BAT54C-GS08 LT1117/TO223 SSM12LL LT1117/TO223/NC +1V8 CVDD1V8 U4-A1 MCU-VDD VOUT BEAD 120/0805 VOUT BEAD 120/0805 ADJ/GND BEAD 120/0805 ViewSonic Corporation ADJ/GND RB081L-20 RB081L-20 AIC1084/TO252/NC 330/6 1% 200/6 1% AIC1084/TO252 Scaler Power Model 100uF/25V 100uF/25V 150/6 1% Title 330/6 1% GND_A...
  • Page 72 330uF/16V BEAD 120/1206 MUTE MUTE TDA7496L DTC144EUA AGND L26 BEAD/1206 AGND AGND AGND GND_A R104 10K/6 R105 10K/6 BEAD/1206 STANDBY STANDBY AGND GND_A DTC144EUA ViewSonic Corporation AGND AUDIO Model Title Date Rev: ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 73: Pcb Layout Diagrams

    11. PCB Layout Diagrams MB TOP ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

  • Page 74: Mb Top

    MB TOP ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 75 MB BOTTOM ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...
  • Page 76 Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) ViewSonic Corporation VA2012w-2_VA2012wb-2 Confidential - Do Not Copy...

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