1. Manuals
  2. Brands
  3. ViewSonic Manuals
  4. Monitor
  5. VA2012W
  6. Service manual

ViewSonic VA2012w Service Manual

20” color tft lcd display
Hide thumbs Also See for VA2012w:
Table of Contents

Advertisement

Quick Links

See also: User Manual
Service Manual
ViewSonic VA2012w
VA2012wb
Model No. VS10859
20" Color TFT LCD Display
(VA2012w_VA2012wb_SM Rev. 1a Nov. 2005 )
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Advertisement

Table of Contents
loading

Related Manuals for ViewSonic VA2012w

Summary of Contents for ViewSonic VA2012w

  • Page 1 Service Manual ViewSonic VA2012w VA2012wb Model No. VS10859 20” Color TFT LCD Display (VA2012w_VA2012wb_SM Rev. 1a Nov. 2005 ) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...
  • Page 2 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. Adjustment Procedure 6. Troubleshooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram and Exploded Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • Page 4: Precautions And Safety Notices

    CFL 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 or tilt the Interface Connector of the TFT Module. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 5 (14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950 or UL1950). Do not connect the CCFL to a Hazardous Voltage Circuit. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 6 VA2012w series handling Notice Correct Method Incorrect method Correct Method Incorrect method Correct Method Incorrect method Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 7 Correct Method Incorrect method Correct Method Incorrect method Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • Page 8: Specification

    640 x 350, 640 x 480, 720 x 400 (640 x 400), 800 x 600, 832 x 624, 1024 x 768, Resolution Compatibility 1280 x 720, 1280 x 1024, 1600 x 1200, 1680 x 1050 Exclusions Not compatible with interlaced video Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 9 Power Saving Operation(Method) VESA DPMS Signaling ON Mode < 50 W (max) / 47 W (typ) Power Consumption ACTIVE OFF < 2W Recovery Time ON MODE = N/A, ACTIVE OFF < 3 SEC Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 10 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 11 ● 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 12 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 13 ● Power Supply, and Grounding Artifacts : No visible artifacts in any specified video mode within the horizontal or vertical frequency range of the monitor ● Temperature Drift : Image shall not drift or lose fine-tune adjustment Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 14 ● Weak Corner : 76.2 cm ● Six Faces : 76.2 cm ● 3 Edges Radiating From Weak Corner : 76.2 cm ● Drop Test Data shall be submitted for approval to ViewSonic before Mass Production 4-11 ENVIRONMENTAL ● Operating Temperature : 0°C to +40°C ●...

  • Page 15: Front Panel Function Control Description

    3. Front Panel Function Control Description Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 16 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • Page 17: Circuit Description

    Blue GND Blue GND +5V (for DDC) +5V (for DDC) Sync GND Sync GND None None DDC Data DDC Data Horizontal Sync Horizontal Sync Vertical Sync Vertical Sync DDC Clock DDC Clock Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 18 ELECTRICAL SPECIFICATIONS 3.1 Standard conditions Display Area 433.44 x 270.9 mm Video Signal 0.7Vpp Contrast Default Brightness Default Ambient 20 +/- 5 °C Input Warming up > 30 min Display 1680 x 1050 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 19 Analog video input: 75 ohm Digital video input: 100 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 20 Time: 08:44:23 Date: Wed Sep 07, 2005 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VA2012wSERIES ______________________________________________________________________ ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: ________________________________________ 0 | 00 FF FF FF FF FF FF 00 5A 63...
  • Page 21 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 (+) Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 22 Time: 08:45:59 Date: Wed Sep 07, 2005 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VA2012wSERIES ______________________________________________________________________ ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: ________________________________________ 0 | 00 FF FF FF FF FF FF 00 5A 63...
  • Page 23 800 X 600 @ 75Hz (VESA) 832 X 624 @ 75Hz (Apple,Mac II) 1024 X 768 @ 60Hz (VESA) 1024 X 768 @ 70Hz (VESA) 1024 X 768 @ 75Hz (VESA) 1280 X 1024 @ 75Hz (VESA) Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 24 Min Vertical Freq - 50 Hz Max Vertical Freq - 75 Hz Min Horiz. Freq - 30 KHz Max Horiz. Freq - 82 KHz Pixel Clock - 170 MHz Secondary GTF - Not Supported Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 25 .The analog RGB and synchronous signals are connected to NT68563 as described below: Pin Name Pin Number Red + Red - Green + Green - Blue + Blue - H sync V sync Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 26 Stand-by and mute functions. 6.3 Inverter Board This is a specific inverter for VA2012 monitor 40W backlight which converters 20Vdc to drive 6 tubes cold cathode fluorescent tubes. Electrical specification described as below. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 29 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 30 Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 31 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...
  • Page 32 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 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 33 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 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 34 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 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 35 0.5 Install completed , restart the PC or notebook. See Fig 0.5 Fig. 0.5 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 36 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 1.3 Press “ Next “ button to continue., see Fig 1.1 Fig 1.1 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 37 “ button to continue , see Fig 1.2 Fig 1.2 1.5 Press “ Install “ button to continue , see Fig 1.3 Fig. 1.3 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 38 2.1 After installation , we could find the shortcut in the setting path or the program bar ( default setting ) , see Fig 2.1 Fig. 2.1 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 39 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 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 40 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 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 41 3.3 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 Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 42 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 43 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 44 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 45 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 46 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 47 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. Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 48 [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” Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 49 VA2012w series de-assembling procedure 1. Move the monitor our from carton 2. Put the monitor on desk & face down 3. Remove the I/O cover 4. Loose the screws & remove the stand 5. Separate the hook by tool (coin or screw-driver) 6.
  • Page 50 8. Loose the shielding screw 9. Tear off the yellow tape 10. Tear off the yellow tape 11. Loose the Button/B screw 12. Move the Button board Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 51 13. Remove the B/B cable 14. Remove speaker 15. Remove the shielding ass’y 16.Remove the AL-Foil 17. remove the mylar & rubber 18. Loose the bezel screw Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 52 19. Loose the BKT screw L/R 20. Remove the PCBA 21. Remove the PCBAs 22. Remove the cables from PCBAs Confidential - Do Not Copy Confidential - Do Not Copy ViewSonic Corporation ViewSonic Corporation VA2012wb VA2012wb...
  • Page 53 VA2012w series packing method 1. Sticker on LCD protection film 2. Put the monitor into the PE or EPE bags 3. Put on the end-cap left / right 4. Put the monitor into carton Face-up 5. Put all accessories into carton 6.

  • Page 54: 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 55 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 56 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 Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • Page 57: Recommended Spare Parts List

    7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VA2012w-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PXC Item Description ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Q'ty Accessories: Power cable A-00003642 DM33T181004 Power cable Board Assembly:...
  • Page 58 RECOMMENDED SPARE PARTS LIST (VA2012wb-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PVW Item Description ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Q'ty Accessories: Power cable A-00003642 DM33T181004 Power cable Board Assembly: Button board B-00004142 23W0VABB009 Button board...
  • Page 59 BOM LIST (VA2012w-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PXC Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 1LW0VAXVS99 W0VA LCD MONITOR(TWN)S/B GP B-00004144 21W0VAMB002 W0VA M/B ASSY (NOVATEK 68563) GP #N/A 31W0VASS008 W0VA M/B S/S ASSY (NOVATEK 68563) GP...
  • Page 60 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty P-00004160 HFW0VA03015 CARTON(S) W0VA(HFW0VA03,REV3A) GP DC-00004153 HGW0VA01013 CD+QSG W0VA(HGW0VA01,REV3A) GP #N/A JXLM5003011 HANDLE LM5S(JXLM5003,REV 3B) GP M-00004158 JXW0ZB01019 LCD FILM W0ZB-A1(JXW0ZB01,REV3A)GP M-LB-0813-1043 HCL70021011 HI-POT LABEL L70L(HCL70021,REV3A) #N/A HFW0VA02019 SPACE PLATE W0VA(HFW0VA02,REV3A) GP 0.042...
  • Page 61 BOM LIST (VA2012wb-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PVW Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 1LW0VAXVS05 W0VA LCD MONITOR(USA) GP B-00004144 21W0VAMB002 W0VA M/B ASSY (NOVATEK 68563) GP #N/A 31W0VASS008 W0VA M/B S/S ASSY (NOVATEK 68563) GP #N/A DFDS15FR076 CONN D-SUB 15P 3R FR(P1.15,H12.55) GP...
  • Page 62 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty M-LB-0813-0745 HCL7V002011 SERIAL LEBAL L7V(HCL7V002,REV3A) GP M-LB-0813-1042 HCL7V019011 CARTON LABEL L7VC(HCL7V019,REV3B) GP P-00004167 HFW0VA01012 CARTON W0VA(HFW0VA01,REV3A) GP DC-00004153 HGW0VA01013 CD+QSG W0VA(HGW0VA01,REV3A) GP #N/A JXLM5003011 HANDLE LM5S(JXLM5003,REV 3B) GP M-00004158 JXW0ZB01019 LCD FILM W0ZB-A1(JXW0ZB01,REV3A)GP...

  • Page 63: Exploded Diagram And Exploded Parts List

    8. Exploded Diagram and Exploded Parts List ViewSonic Corporation Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 64 EXPLODED PARTS LIST (VA2012w-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PXC Item ViewSonic P/N Ref. P/N Description Q'ty B-00004144 21W0VAMB002 W0VA M/B ASSY (NOVATEK 68563) GP B-00004145 AS08B532009 PWR MODULE(DTA)EADP-64CF B,90~264V GP #N/A AS023360D18 INV MODULE(SEL)W0E(20V,I=6MA) GP...
  • Page 65 EXPLODED PARTS LIST (VA2012wb-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PVW Item ViewSonic P/N Ref. P/N Description Q'ty B-00004144 21W0VAMB002 W0VA M/B ASSY (NOVATEK 68563) GP B-00004145 AS08B532009 PWR MODULE(DTA)EADP-64CF B,90~264V GP #N/A AS023360D18 INV MODULE(SEL)W0E(20V,I=6MA) GP...
  • Page 66 Packing for Shipping PACKING PART LIST (VA2012w-1) ViewSonic Model Number: VS10859-1W Rev: 1a Serial No. Prefix: PXC Item ViewSonic P/N Ref. P/N Location Q'ty #N/A 1LW0VAXVS99 VA2012w monitor P-00004161 HBW0VA01019 END CAP (L) P-00004162 HBW0VA02015 END CAP (R) DC-00004153 HGW0VA01013 USER'S MANUAL &...

  • Page 67: Block Diagram

    9. Block Diagram Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • Page 68: Schematic Diagrams

    2.2K/6/NC GGND BGND GND_A 0.1uF/6 GND_A GND_A 100/6/NC SYNC.RETURN 74LVC14 GND_A R107 GND_A VSIN 3 R108 ZD5V6 22pF/6/NC 2.2K/6/NC HSIN 3 GND_A GND_A GND_A ViewSonic Corporation ADC Input Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 69 RXC+ 3 TXC+ 10/6 TXC- RXC- 3 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 BAV99 ViewSonic Corporation Model DVI Input Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 70 RSTn IRQn IRQn IRQn REFCLKI REFCLKI OSCI OSCO GND_A BYPASS-VS BYPASS-VS IN_VSO/GPO4 GPO1 BYPASS-HS IN_HSO/GPO5 REFCKO/GPO6 BYPASS-HS GPO7 AD0/GPO2 GPO8 AD1/GPO3 GPO9/PWM1 GPO10/PWM0 GND_A ViewSonic Corporation GND_A NT68563 Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 71 GND_A GND_A RIGHT- DOWN- PWR- SEL- MENU- MUTE- LEFT- GND_A GND_A GND_A GND_A GND_A GND_A GND_A GND_A ViewSonic Corporation MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU(I/O_Key) Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 72 Max 2.0A BEAD 120/1206 +18V +12V BEAD 120/1206/NC BEAD 120/1206/NC SI9435 LCD-VDD 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 GND_A Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 73 LT1117/TO223/NC SSM12LL U4-A1 +1V8 CVDD1V8 MCU-VDD VOUT BEAD 120/0805 VOUT BEAD 120/0805 ADJ/GND BEAD 120/0805 ADJ/GND RB081L-20 RB081L-20 ViewSonic Corporation AIC1084/TO252/NC 330/6 1% 200/6 1% AIC1084/TO252 Scaler Power 100uF/25V Model 100uF/25V 150/6 1% 330/6 1% Title GND_A Date Rev: GND_A...
  • Page 74 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 AGND ViewSonic Corporation AUDIO Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA2012wb...

  • Page 75: Pcb Layout Diagrams

    11. PCB Layout Diagrams MB TOP Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 76 MB TOP Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 77 MB BOTTOM Confidential - Do Not Copy ViewSonic Corporation VA2012wb...
  • Page 78 Add.: Fax: Tel: 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) Confidential - Do Not Copy...

This manual is also suitable for:

Va2012wb

Table of Contents