ViewSonic VA1912W Service Manual
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ViewSonic VA1912W Service Manual

19” color tft lcd display
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Service Manual

ViewSonic VA1912W/Wb
Model No. VS10866
19" Color TFT LCD Display
(VA1912W/Wb_SM Rev. 1a Oct. 2005)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VA1912W/Wb Model No. VS10866 19” Color TFT LCD Display (VA1912W/Wb_SM Rev. 1a Oct. 2005) 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. 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 VA1912W/Wb...

  • 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 VA1912W/Wb...
  • 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 VA1912W/Wb...
  • Page 6 Take out the monitor by grasping the LCD panel. That may cause “ MURA“. Place the monitor on a clean & soft foam pad . Place the monitor on foreign objects . That could scratch the surface of panel Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...

  • Page 7: Specification

    2. Specification 2.1 INTRODUCTION FEATURES VA1912w / VA1912wb Size 19” wide Luminance (Typ, cd/¢ T ) 280 cd/¢ T Contrast Ratio (Typ) 500:1 TFTLCD PANEL Colors ( 6 bit + 2 bit FRC) 16.2 M colors Response Time (Typ) 8 ms Viewing Angle (H/V) 150 °...
  • Page 8 Audible shall defined Power Supply Acoustics to be in compliance with ISO 7779 (DIN EN27779:1991) Noise measurements of machines acoustics. Power Switch noise shall not be considered Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 9 1280 x 1024 @ 75Hz, 79.97kHz 1280x 768 @ 60Hz, 47.78kHz 1280 x 960 @60Hz, 60kHz 1440 x 900 @ 60Hz, 55.96kHz *: The vertical image size might not be full screen. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 10 Note 1: Status bar indicating Power Button lock or unlock is in progress and when complete it will indicate “Power Button Locked” Note 2: Power should only be lockable in the “On State” Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 11 Lime Green pantone # 577C Cable type / length 3.5mm stereo cable / 1.8m length Note: There is no guarantee <1 W power Audio DPMS consumption in Active Off mode, when the Audio Cable is connected Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...

  • Page 12: Front Panel Function Control Description

    Also a shortcut to toggle analog and digital connection. Power light Audio Mute button turns Green = ON the sound off Orange = Power Saving Standby Power On/Off Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 13 You can toggle between control screens, adjust the selected option, or exit the screen. . (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 VA1912W/Wb...

  • Page 14: Main Menu Controls

    (white level). Brightness adjusts background black level of the screen image. Input Select toggles between inputs if you have more than one computer connected to the VA1912w/VA1912wb. Audio Adjust Volume increases the volume, decreases the volume, and mutes the audio.
  • Page 15 Preset Timing Mode, colors return to the 6500K factory preset. Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic website URL. See your graphics card’s user guide for ®...
  • Page 16 OSD Timeout sets the length of time the OSD screen is displayed. For example, with a “30 second” setting, if a control is not pushed within 30 seconds, the display screen disappears. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 17 OSD Background allows the user to turn the OSD background On or Off. Memory Recall returns the adjustments back to factory settings if the display is operating in a factory Preset Timing Mode listed in the Specifications of this manual. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...

  • Page 18: Circuit Description

    Frame Rate (DFR) generator for the digital output video to the display panel that preserves the advantages of a fixed output clock rate, while eliminating the output end of frame short-line. Block Diagram Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 19 TFT LCD drivers. Block Diagram Output data Data Output RSDS convert latch transmitter LVDS LVDS input data Smart Source driver receiver polarity Source signals control Gate driver Signal signals Gate sync control Setting pins Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...

  • Page 20: Adjusting Procedure

    Test Pattern: Window standard pattern Inspection Item: Line Defect, Function Defect & Mura 7 25 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 25% White (Gray) Inspection Item: Particle, Line Defect & Mura Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 21 Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot, Partial & Line Defect 13 Blue Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot, Partial & Line Defect Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 22 Test Pattern: Black block at the center Inspection Item: Cross Talk & Optical Character 17 Black_Tile Test Signal: 1280*1024@60Hz Test Pattern: Black tile under white background Inspection Item: Function Defect & Image Remain Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 23 Full Screen 50% Green Figure 5 Blue Full Screen 50% Blue Figure6 White Full Screen White Figure7 Black_Tile Black Tile Under White Background Figure 8 Figure 1 Figure 2 Figure 3 Figure 4 Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 24 Figure 5 Figure 5 Figure 6 Figure 7 Figure 8 Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 25 B. BIOS update procedure BIOS Update User Guide FOR VIEWSONIC BIOS Update Flow for Genesis 1.1 Program¡G 1. 1. 1. Software a. Please download the file “ M-Star” from CMO E-Sir system. There are ISP & BIOS two files, kindly see as below.
  • Page 26 B. ISP & BIOS software file to be about to produce the next. (If the file existence already, needn’t to set up. Isp.lnk C. repeat.) This system is applied to Win 95/98/NT/2000. 1.3 ISP Execution 1. Settings: Double Click Isp.exe Fig.1: ISP Tool Main Menu Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 27 94 94 ac ca 53 For A190A2 Fig.1: ISP Tool Main Menu ” Key in “OK “After 3.Select correct Micro Controller as Fig.3. Step 2 Load MCU File Step 1 Select MTV512M64 Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 28 4. Installation software, Select want download correct file Step 3 Example : The path of software location Step 4 Press RUN Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 29 1.4.Verification BIOS Update whether success 1. When everything is done. Please turn off the power and restart it again. Check Factory Mode and make sure it already be updated. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 30 1 Separate Stand Assy 1.1 Remove Stand Cover Step 1 : Take out Stand Assy Step 2 : Remove Cover Hinge Step 3 : Loose and Remove 4 screws Step 4: Remove Stand Assy Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 31 Separate Bezel hooks to take Bezel and Rear Cover apart. Step 1 : Loose and remove 2 screws. Step 2 : Separate Bezel hooks to take Bezel and Rear Cover apart. Step 3 : Remove Rear Cover. Step 4 : Completed. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 32 Remove 2 pieces of Backlight wires. Step 2 : Loose and remove 4 screws Step 3 : Loose and remove 2 screws of power socket. Step 4 : Loose and remove 2 screws of Digital socket. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 33 Loose and remove 2 screws of Analog Socket. Step 6 : Remove the Metal Cover. Step 7 : Completed. 3.2 Remove Power Board Step 1 : Remove 2 pieces of Backlight wires. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 34 Step 2 : Loose and remove 2 screws. Step 3 : Remove Power Board. Step 4 : Completed. 4 Change New Power Board Step 1 : Insert New Power Board. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 35 Fasten 2 fixed screws of Power Board. Step 3 : Insert 2 pieces of Backlight wires. Step 4 : Completed 5. Remove AD PCBA Step 1 : Remove 2 FFC from X Board. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 36 Step 2 : Remove FFC from OSD Board. Step 3 : Loose and remove 4 screws. Step 4 : Remove AD PCBA. Step 4 : Completed. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 37 Place New AD PCBA. Step 2 : Fasten 4 fixed screws of AD PCBA. Step 3 : Insert 2 FFC from X Board. Step 4 : Insert FFC from OSD Board. Step 5 : Completed. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 38 7. Remove OSD Board Step 1 : Remove FFC. Step 2 : Separate both Audio Cable. Step 3 : Take OSD Board apart. Step 4 : Completed. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 39 Insert Audio cable to connectors of New OSD Board. Step 3 : Insert FFC to OSD Board. Step 4 : Completed. 9. Add Cover to AD PCB Heatsink Step 1 : Join the cover hooks of X-PCB. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 40 Fasten 2 fixed screws of Digital Socket. Step 4 : Fasten 2 fixed screws of Power Socket. Step 5 : Fasten 4 fixed screws. Step 6 : Insert 2 pieces of Backlight wires. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 41 10. Rear Assy Assembly Step 1 : Join the Bazel assy . Step 2 : Fasten 4 fixed screws. Step 3 : Place Rear Cover. Step 4 : Fasten 2 fixed screws. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 42 11. Stand Assy Assembly Step 1 : Place Stand Assy. Step 2 : Fasten 4 screws to fixed Stand Assy. Step 3 : Insert Cover Hinge. Step 4 : Insert Seat Assy. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 43 Bright Dot Display Dark Dot Backlight Light Leakage Mura Check Panel Panel Change Image Sticking Brightness spot Particle Dot Defect Image Remain Group Bright Dots Others Cosmetics Defect TEST Next Step Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 44 Panel Change Check Panel Beat Display Shut Down Abnormal AD/B Change Display Wave Check PCBA Power/B Change CNT/B Change Check Panel Panel Change No Backlight Check Adapter Adapter Change TEST Next Step Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 45 Adapter Change No signal AD/B Change CNT/B Change Check PCBA R.G.B Display Abnormal VGA cable Change Check Wire DVI cable Change Gray Scale Display Check Panel Panel Change Abnormal TEST Next Step Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 46 Vertical Check Panel Panel Change Band Defect Horizontal Band Defect Power Saving Display AD/B Change Check PCBA Abnormal AD/B Change Power/B Change Peculiar Smell Check PCBA Inverter/B Change TEST Next Step Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 47 Abnormal Check PCBA Inverter/B Change LED Dark OSD/B Change LED Abnormal OSD Cable Change Check Wire LED Loss DC Power CNT Cable Change LEDLED LED Flicker Adapter Change TEST Next Step Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 48 CNT/B Change Abnormal Power/B Change Loud Check PCBA Inverter/B Change Abnormal OSD/B Change Check Wire No Voice OSD Cable Change Loudspeaker Check Loudspeaker L/R Same Change Volume Next Step Loudspeaker TEST Noise Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 49 DVI Signal Display Abnormal EDID Update Check EDID Code TV /B Change Check PCBA TV Function Display AV Cable Change Check Wire Abnormal Check Controller Remote controller Change TEST Next Step Completed Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 50 Use OSD Color Menu to adjust color setting. Dark area distorted Use OSD Color Menu to adjust color setting. White color is not white Use OSD Color Menu to adjust color setting. Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 51 7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VA1912w-1) ViewSonic Model Number: VS10866-1W Rev: 1a Serial No. Prefix: PXD ECR/ECN ViewSonic P/N Item Description Ref. P/N Location Universal number# Q'ty Accessories: Adapter, Lips With Audio, DAC-12M030 A, Ver:0F, 5...
  • Page 52 RECOMMENDED SPARE PARTS LIST (VA1912wb-1) ViewSonic Model Number: VS10866-1W Rev: 1a Serial No. Prefix: PW6 Item ViewSonic P/N Description ECR/ECN Ref. P/N Location Universal number# Q'ty Accessories: Adapter, Lips With Audio, DAC-12M030 A, Ver:0F, 5 V/3 A, 12 V/0.7 A, L TYPE, 5 mA,...
  • Page 53 BOM LIST (VA1912w-1 & VA1912wb-1) ViewSonic Model Number: VS10866-1W Rev: 1a Serial No. Prefix: PXD / PW6 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A MJ0A10AK01 19" Wide Semi Product,A190A2,1440X900,TN 19" Wide PS TN Asahi 0.7mm glass Cr BM 8ms Fast LC (Panel...
  • Page 54 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty Olympic,A190A2,ID BOM,D-sub+DVI+Audio,USA,Black,VSC, Olympic,A190A2,ID BOM,D-sub+DVI+Audio,USA,Silver Black,VSC, Olympic,A190A2,ID BOM,D-sub+DVI+Audio,China,Black,VSC, PJ0AI15200(A15) Olympic,A190A2,ID BOM,D-sub+DVI+Audio,China,Silver PJ0AI25200(A25) Black,VSC, PJ0AI15203(C15) Olympic,A190A2,ID BOM,D- PJ0AI25203(C25) sub+DVI+Audio,European,Black,VSC, PJ0AI15201(E15) Olympic,A190A2,ID BOM,D-sub+DVI+Audio,European,Silver PJ0AI25201(E25) Black,VSC, PJ0AI15202(K15) Olympic,A190A2,ID BOM,D-sub+DVI+Audio,UK,Black,VSC, PJ0AI25202(K25) Olympic,A190A2,ID BOM,D-sub+DVI+Audio,UK,Silver PJ0AI15204(W15) Black,VSC,...
  • Page 55 MENU for A190A2-H05,Complex,1C,Yi-Ching Special C.E15, DC-00004294 76-D004438 Printing,VSC_VA1912W CD_Rom K.W15/25 MENU for A190A2-H05,Complex,1C,Yi-Ching Special #N/A 76-D004437 Printing,VSC_VA1912Wb CD_Rom C.E25 #N/A 79-D004425 Shipping Package Information for ,A190A2-H05,ViewSonic common #N/A 78-D000275 Warranty Card,A170E1-H0G,143 mmx210 mm,VSC_VA712 C15.25 Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 56 8. Exploded Diagram and Exploded Parts List ViewSonic Corporation Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 57 EXPLODED PARTS LIST (VA1912w-1 & VA1912wb-1) ViewSonic Model Number: VS10866-1W Rev: 1a Serial No. Prefix: PXD / PW6 Item ViewSonic P/N Ref. P/N Description 44-D003584 Backlight Unit,A190A2,Forhouse #N/A L3J009XXXX 19" Wide PS TN Asahi 0.7mm glass Cr BM 8ms Fast LC (Panel base)
  • Page 58 9. Block Diagram OSD Key Pad Speaker Audio Out Audio 3.3V LCD Module DVI-D Main Board Digital Video D-sub Analog Video Signal Backlight DC-5V Audio Control DC-12V AC Power Backlight LIPS Audio Audio In Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 59 AUDIOR- AUD_DET DCDC_ON/OFF PANEL_ON/OFF V33T AUD_DET V12A DCDC_ON/OFF V33T V12A VOL_ADJ VOL_ADJ V33P AUDIO_ON V33P AUDIO_ON POWER V18C XAOI V33C XAOI V33C V12A V12A INV_ON/OFF INV_ADJ ViewSonic Corporation Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 60 XOUT 0603/22p/50V/N/RoHS 0603/22p/50V/N/RoHS BYPASS AVSS_LPLL 0603/100n/16V/7/PbF 0603/100n/16V/7/PbF BUSTYPE V33C VDPLL HCB2012KF-420T40/RoHS HCB2012KF-420T40/RoHS Do Not Stuff Do Not Stuff V33C 1206/10u/16V/X/PbF 1206/10u/16V/X/PbF 0603/100n/16V/7/PbF 0603/100n/16V/7/PbF 0603/0R/5%/RoHS 0603/0R/5%/RoHS ViewSonic Corporation SCALER Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 61 0603/100n/25V/Y/RoHS 0603/100n/25V/Y/RoHS VOL_ADJ Do Not Stuff Do Not Stuff 1206/10u/16V/5/RoHS 1206/10u/16V/5/RoHS 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS 2N7002/RoHS 2N7002/RoHS 0603/1K/5%/RoHS 0603/1K/5%/RoHS MUTE Do Not Stuff Do Not Stuff ViewSonic Corporation INVERTER I/F Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 62 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS V33P1 V33P1 Do Not Stuff Do Not Stuff FBMJ2125HS420/PbF FBMJ2125HS420/PbF LM1117MPX-3.3/RoHS LM1117MPX-3.3/RoHS V33P VOUT V33P VOUT ViewSonic Corporation 1206/22u/16V/Y/RoHS 1206/22u/16V/Y/RoHS 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS 1206/22u/16V/Y/RoHS 1206/22u/16V/Y/RoHS 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS POWER Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation...
  • Page 63 RESET_N R139 R139 OES0 0603/1K/1%/RoHS 0603/1K/1%/RoHS R137 R137 0603/10K/5%/RoHS 0603/10K/5%/RoHS R140 R140 OEPW1 0603/1K/1%/RoHS 0603/1K/1%/RoHS ViewSonic Corporation R141 R141 C116 C116 CNTP Do Not Stuff Do Not Stuff 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS R142 R142 MTSIDE Do Not Stuff Do Not Stuff Model...
  • Page 64 Do Not Stuff 0603/10K/5%/RoHS 0603/10K/5%/RoHS 0603/0R/5%/RoHS 0603/0R/5%/RoHS TP0610K/PbF TP0610K/PbF LED_BL Do Not Stuff Do Not Stuff 0603/249R/1%/RoHS 0603/249R/1%/RoHS Do Not Stuff Do Not Stuff LED_B ViewSonic Corporation Model OSD & AUDIO Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 65 0603/10K/5%/RoHS VCPU SST3904F/PbF SST3904F/PbF SST3904F/PbF SST3904F/PbF 0603/10K/5%/RoHS 0603/10K/5%/RoHS DAT_DDC CLK_DDC 0603/100R/5%/RoHS 0603/100R/5%/RoHS 0603/100n/25V/X/RoHS 0603/100n/25V/X/RoHS SCL1 0603/100R/5%/RoHS 0603/100R/5%/RoHS SDA1 Do Not Stuff Do Not Stuff AT24C16AN/RoHS AT24C16AN/RoHS ViewSonic Corporation Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 66 BR2N BR1P BR1N BR0P BR0N BSTH GVON GVOFF VCM_PWM DCDC_ON/OFF PANEL_ON/OFF PANEL_ON/OFF IL-FHR-F36S-HF/RoHS IL-FHR-F36S-HF/RoHS 1206/22u/16V/Y/RoHS 1206/22u/16V/Y/RoHS 0603/100n/25V/7/RoHS 0603/100n/25V/7/RoHS V12A V12A ViewSonic Corporation 1206/4.7u/35V/Y/E 1206/4.7u/35V/Y/E PANEL I/F Model 0603/100n/25V/X/RoHS 0603/100n/25V/X/RoHS Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 67 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 Label10603 Label10603 Label10603 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 Do Not Stuff Do Not Stuff 1206/10u/16V/5/RoHS 1206/10u/16V/5/RoHS ViewSonic Corporation Model DVI INTERFACE Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 68 BZT52-C5V6S/RoHS BZT52-C5V6S/RoHS R171 R171 Do Not Stuff Do Not Stuff R172 R172 VCLK VGA_5V Do Not Stuff Do Not Stuff Do Not Stuff Do Not Stuff ViewSonic Corporation Model Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...
  • Page 69 11. PCB Layout Diagrams Confidential - Do Not Copy ViewSonic Corporation VA1912W/Wb...

  • Page 70: Adjustment Procedure

    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) Confidential - Do Not Copy...

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