ViewSonic VS11618 Service Manual
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ViewSonic VS11618 Service Manual

19" color tft lcd display
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Service Manual

ViewSonic VA1903wb/VA1903wm
Model No VS11618
19" Color TFT LCD Display
Manufacture Date: Dec-25-06
- 1 –
ViewSonic Corporation
Confidential - Do Not Cop
VA1903wb/VA1903wm

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Summary of Contents for ViewSonic VS11618

  • Page 1: Service Manual

    Service Manual ViewSonic VA1903wb/VA1903wm Model No VS11618 19” Color TFT LCD Display Manufacture Date: Dec-25-06 - 1 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 2: Revision History

    ENERGY STAR guidelines for energy efficiency. Disclaimer: ViewSonic Corporation shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from furnishing this material, or the performance or use of this product.

  • Page 3: Table Of Contents

    6. Troubleshooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram And Spare Parts List 9. Disassemble Process 10. Block Diagram 11. Schematic Diagram 12. PCB Layout Diagram - 3 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 4 3. Keep wires away from high voltage, high temperature components and sharp edges. 4. Keep wires in their original position so as to reduce interference. 5. Usage of this product please refer to also user’s manual. - 4 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 5 “Mura.” not touch the surface of the polarizer. Taking out the monitor by grasping the LCD Take out the monitor with cushions panel. That may cause “Mura.” - 5 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 6 “Mura.” Place the monitor on the lap, the panel The panel is placed facedown on the lap. That surface must be upwards. may cause “Mura.” - 6 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 7: Specification

    Warning: Do not set the graphics card in your computer to exceed these refresh rates; doing so may result in permanent damage to the LCD display. ® Macintosh computers older than G3 require a ViewSonic Macintosh adapter. To order an adapter, contact ViewSonic.
  • Page 8 Blue video input No Connection Ground Red video ground Green video ground Blue video ground H/V sync ground No connection (SDA) Horizontal sync (Composite sync) Vertical sync (SCL) SIGNAL LEVEL - 8 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 9 Front Panel Function Controls And Indicators - 9 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 10 • 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.) - 10 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 11 6500K-Adds red to the screen image for warmer white and richer red. 5400K-Adds green to the screen image for a darker color. User Color Individual adjustments for red (R), green (G), and blue (B). - 11 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 12 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 instructions on changing the resolution and refresh rate (vertical frequency).
  • Page 13 Preset Timing Mode listed in the Specifications of this manual. Exception: This control does not affect changes made with the User Color control, Language Select or Power Lock setting. - 13 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 14 No signal + [2] + [ ] Burning mode Signal + [2] + [ ] Factory mode Remark : All the short cuts function are only available while OSD off - 14 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 15: Circuit Description

    4.2 MAIN BOARD BLOCK FUNCTION DESCRIPTION The main board contains panel control logic, brightness control logic, DDC and DC convert DC circuit and so on. PWPC board Backlight and Panel TSUM16AL-1 Keyboard EPROM EPROM - 15 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 16 Start Circuit R931, R904,R938 CN902 Over Control IC Voltage Protect ON/OF OSC and MOSFET DC Convert Output Q805,Q806 Circuit Circuit Lamp Over ON/OFF Feedback Voltage Control Circuit Control IC - 16 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 17 4.4 INTRODUCTION OF IC TSUM16AL-1(U401): integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB into digital and room and shrink scaling output to LCD panel. Pin Diagram: - 17 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 18 100MHz in fast read mode and the bottom 4Kbyte sector into four smaller 1 Kbyte sectors features(except Pm25LV512A), The devices use a single low voltage, ranging from 2.7 Volt to 3.6 Volt, power supper to perform read, erase - 18 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 19 Ground Device Power Supply HOLD# INPUT Hold: Pause serial communication with the master device without resetting the serial sequence. INPUT Serial Data Clock INPUT Serial Data Input Circuit Diagram - 19 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 20 TV and Monitor applications. Features of the UTC TDA7496L include linear volume control, Stand-by and mute functions. The function of each pin and the inside circuit diagram are as follows: Block Diagram - 20 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 21 The function of each pin and the inside circuit diagram are as follows: - 21 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 22 LCD applications requiring 2 to 6 CCFLs.PWM control, Has such functions as short-voltage protection, Over-voltage protection, over-current protection and etc. The function of each pin and the circuit diagram inside are as follows: - 22 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 23 Capacitor for soft start time and loop compensation Timing resistor and capacitor for operation and striking frequency GNDA Ground for analog signals DRV2 Drive output PGND Ground for power paths - 23 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 24: Block Diagram

    Block Diagram - 24 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 25: Adjustment Procedure

    5400 color temp. parameter is Wx = 0.335±0.03;Wy = 0.350 ±0.03; Y = 250 ±20 cd/m D、MEM.CHANNEL10 ( SRGB color): 6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03; Y = 220 ±20 cd/m - 25 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 26 (6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 (7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±5 - 26 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 27 2).Change to each mode in turn and wait for the monitor finish auto-alignment and save press before change to next mode. 3).Until all of modes are adjusted, exit OSD menu and press POWER OFF to exit factory mode. - 27 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 28 1024 x 768 @ 75Hz, 60.0kHz 1280 x 1024 @ 60Hz , 48.4kHz 1280 x 1024 @ 75Hz , 60.0kHz 1440 x 900 @ 60Hz , 55.9kHz 1440 x 900 @ 75Hz , 70.6kHz - 28 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 29 The screen must have White Balance White & Black Pattern the pure white and black Figure 9 pattern, no other color. Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2) - 29 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 30 Horizontal & Vertical Thickness Pattern R. Color Pattern (Figure 4) (Figure 3) G. Color Pattern (Figure 5) B. Color Pattern (Figure 6) Full White Pattern (Figure 7) Dark Screen Pattern (Figure 8) - 30 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 31 (a)Select and enter “Manual Image Adjust” function on OSD Main Menu. (b)Then, select and enter “Horizontal Size” or “Horizontal/Vertical Position” function to adjust the video boundary to be full scanned and within screen frame. - 31 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 32 You should do “All Mode Reset” again. Power Off Monitor Turn off the monitor by pressing “Power” button. 5.6 Firmware Upgrade Procedure When you receive the returned monitor, please check whether the firmware version is - 32 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 33 2.4 Connect Power Cord to VA1703W/VA1903W Monitor. 2.5 Connect P3 to the Signal Generator (eg.Chroma2326) for verifying it after the operation being completed. 2.6 Connect PC to the additional monitor. - 33 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 34 Step 3. Click “Connect” button . (On this step, if the connection is successful, the “Device Type is ******(Flash Type)” Dialog will be showed. If not, the error dialog will be done.) - 34 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 35 Step 5. Click “Auto” button. Be sure that function of Erase Device (File Area), Blank, Program and Verify is selected, then execute the flashing action by clicking the “Run” button. - 35 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 36 TextBox. Step 7. Unplug and replug power cord of VA1703W/VA1903W set and then check the OSD operation and image on srceen. Step 8. At last, do “Memory Recall.” - 36 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 37 3.2.5 Connect PC to the additional monitor. JP1： Power Adapter P2： VGA Cable P1： to LTP Cable 3.3 DDC Key In Procedure Sep1.Select and execute DDC Key In program - 37 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 38 - 38 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 39 Sep2:Inpute the S/N and execute “Enter” - 39 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 40 - 40 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 41 Sep3:Key the “Enter” and write the data - 41 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 42 Sep4:If ddc program OK and show “data compare ok” - 42 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 43: Packing Procedure

    5.7 Packing Procedure - 43 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 44: Troubleshooting Flow Chart

    Troubleshooting Flow Chart - 44 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 45: Recommended Spare Parts List

    M1G1740 8120 SCREW FOR STD/MF XN01A M1G2640 12 47 CR3 SCREW XN01A Q1G 330 8 47 CR3 SCREW Q1G 330 8120 SCREW Q1G1140 10120 SCREW XN01A Q1G1740 8120 Q4*8 XN01A - 45 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 46 PHONE JACK 5PIN CN201 90G6093 1 HEAT SINK U201 AIAUPC6AA2 PC BOARD 61G0603102 CHIPR 1KOHM +-5% 1/10W R207 61G0603102 CHIPR 1KOHM +-5% 1/10W R208 61G0603183 CHIP resistors 1/10W R201 - 46 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 47 88G 35315F H D-SUB 15PIN CN401 93G 22 53 CRYSTAL 14.31818MHZ HC-4 X401 56G 562161 IC TSUM16AL-LF-1 PQFP-10 U401 56G 56327A IC AP1117E18LA U702 56G 585 4A IC AP1117E33LA U701 - 47 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 48 R418 61G0402103 RST CHIP 10K 1/16W 5% R420 61G0402103 RST CHIP 10K 1/16W 5% R421 61G0402103 RST CHIP 10K 1/16W 5% R443 61G0402103 RST CHIP 10K 1/16W 5% R445 - 48 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 49 R464 61G0402472 RST CHIP 4K7 1/16W 5% R468 61G0402472 RST CHIP 4K7 1/16W 5% R484 61G0402472 RST CHIP 4K7 1/16W 5% R500 61G0402472 RST CHIP 4K7 1/16W 5% R504 - 49 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 50 CHIP 22pF 50V NPO C428 65G0402220 31 CHIP 22pF 50V NPO C429 65G0402221 32 MLCC 0402 CAP 220PF J 50 C412 65G0402221 32 MLCC 0402 CAP 220PF J 50 C433 - 50 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 51 93G 39S 34 T ZENER DIODE UDZS5.6B ZD405 93G 39S 34 T ZENER DIODE UDZS5.6B ZD406 93G 39S 34 T ZENER DIODE UDZS5.6B ZD407 715G2467 1 MAIN BOARD SMTKEPC6AAF KEPCBOARD FOR SMT - 51 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 52 C903 65G 3J2206ET 22PF 5% 3KV TDK C816 65G 3J2206ET 22PF 5% 3KV TDK C834 65G 3J2206ET 22PF 5% 3KV TDK C837 65G 3J2206ET 22PF 5% 3KV TDK C841 - 52 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 53 TRANSISTOR RK7002 SOT-3 Q808 57G 759 2 TRANSISTOR RK7002 SOT-3 Q809 57G 759 2 TRANSISTOR RK7002 SOT-3 Q810 57G 763 14 AM9945N-T1-PF SOIC-8 Q805 57G 763 14 AM9945N-T1-PF SOIC-8 Q806 - 53 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 54 R831 61G0805472 RST CHIP 4K7 1/8W 5% R850 61G0805472 RST CHIP 4K7 1/8W 5% R852 61G0805472 RST CHIP 4K7 1/8W 5% R853 61G0805473 RST CHIP 47K 1/8W 5% R808 - 54 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 55 RST CHIP 47OR 1/4W 5% R805 61G1206471 RST CHIP 47OR 1/4W 5% R919 61G1206472 CHIP 4.7KOHM 5% 18W R851 61G1206519 CHIP resistors 1/3W R837 61G1206519 CHIP resistors 1/3W R842 - 55 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 56 CHIP 1206 3300PF K 500V C823 93G 64 33 BAV99 SOT-23 D801 93G 64 33 BAV99 SOT-23 D802 93G 64 33 BAV99 SOT-23 D803 93G 64 33 BAV99 SOT-23 D804 - 56 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 57 95G 90 23 TINCOATEDCOPPER C934 95G 90 23 TINCOATEDCOPPER JP801 95G 90 23 TINCOATEDCOPPER JP805 95G 90 23 TINCOATEDCOPPER JP807 95G 90 23 TINCOATEDCOPPER JP809 95G 90 23 TINCOATEDCOPPER JP811 - 57 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 58 Ref. P/N Description Location Q'ty number# KEPC6AAG KEPC BOARD 89G402A18N LS POWER CORD A34G0028E7Z L BASE A34G0245EA8B1L BEZEL A34G0246E7Z 2L REAR COVER A34G0247E7Z L STAND A34G0248E7Z L HINGE COVER - 58 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 59: Viewsonic Corporation

    J40G190T709 5A ID VA1903wb-T J41G780170917A SELL CARD J41G7802709 1A J44G9012709 1B CARTON J70G1902709 1A CD MANUAL SMTC6HM9VSA2 MAIN BOARD FOR SMT SMTKEPC6AAG KEPC BOARD AIKEPC6AAG KEPC BOARD FOR AI - 59 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 60: Exploded Diagram And Spare Parts List

    Exploded Diagram And Spare Parts List - 60 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 61 J12G 808 2 REAR COVER A34G0246 4Z 2L SCREW M3X5 M1G 130 5120 SCREW M1G1140 6120 M3*6 M1G1730 6120 G2467-B-X-X-1-20061121 CBPC6HM9VSA2 VSC17-LCD FRONT LOGO 23G3178709 3A VSC17-LCD FRONT LOGO 23G3178709 4A - 61 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 62 Packing For Shipping - 62 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 63 CD MANUAL J70G1902709 1A J41G7802709 1A COVER J45G 88606 R MONITOR T96HM9DD1WVSNJ PE BAG J45G 88626 1 J44G9012 1/2 POWER CORD 89G414A18N LS SIGNAL CABLE 89G 728HAA902 BASE A34G0028E4Z L - 63 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 64: Disassemble Process

    LVDS connectors according to the direction of big arrowhead, refer to the following picture 18,19. 11、 That’s all. The disassemble process of the unit is over. - 64 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 65 9.1.3 Show pictures ： （Picture 1） （Picture 2） （Picture 3） （Picture 4） （Picture 5） （Picture 6） - 65 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 66 （Picture 7） （Picture 8） （Picture 9） （Picture 10） （Picture 11） （Picture 12） - 66 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 67 （Picture 13） （Picture 14） （Picture 15） （Picture 16） （Picture 17） （Picture 18） （Picture 19） - 67 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 68 （Picture 20） - 68 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 69: Block Diagram

    Block Diagram - 69 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 70: Schematic Diagram

    PB[0..9] VCC3.3 PB[0..9] PB[0..9] VLCD VLCD 5.PANEL INTERFACE 2.POW ER 4.SCALER G2467-B-X-X-1-20061124 Title 1 Contents Size Document Number 715G2467-A for VA1903WM Date: Friday , Nov ember 24, 2006 Sheet - 70 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 71 10uF/16V 0.1uF/16V 10K 1/10W 5% G2467-B-X-X-1-20061124 Title Power The type of R709 ,R712 Size Document Number ARE 0603 715G2467-A for VA1903WM Date: Wednesday , Nov ember 29, 2006 Sheet - 71 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 72 UDZS5.6B UDZS5.6B DDCA_SDA DDCA_SCL DDC_WP 4 R422 1K 1/16W ESD_5V ZD407 UDZS5.6B G2467-B-X-X-1-20061124 Title INPUT Size Document Number 715G2467-A for VA1903WM Date: Wednesday , Nov ember 29, 2006 Sheet - 72 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 73 2N7002E CONN SDA_DB R503 R506 DDCA_SDA 3 47R 1/16W R505 47R 1/16W G2467-B-X-X-1-20061124 Title SCALER Size Document Number 715G2467-A for VA1903WM Date: Wednesday , Nov ember 29, 2006 Sheet - 73 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 74: Panel Interface

    1/4W LVB0P LVB0M The type of R713 & R714 is 1206 G2467-B-X-X-1-20061124 Title PANEL INTERFACE Size Document Number 715G2467-A for VA1903WM Date: Friday , Nov ember 24, 2006 Sheet - 74 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 75 Q805 BAV99 AM9945N-T1-PF C831 R824 BAV99 470pF/50V 750Ω 1/8W AOC (Top Victory) Electronics Co., Ltd. D804 Title VIEWSONIC 19 '4 LAMPS INVERTER R830 R831 82K 1/8W 3.6KΩ 1/8W Size Document Number G1899-1A-VS-X-2-20061211 Date: Monday , December 11, 2006 Sheet - 75 –...
  • Page 76 2.4KΩ 1% 1/8W CN901 TPV (Top Victory) Electronics Co., Ltd. SOCKET Title 1.POWER OUTPUT 12V & 5 V Size Document Number G1899-1A-VS-X-2-20061211 Date: Thursday , December 14, 2006 Sheet - 76 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 77 R211 C212 C210 C213 C208 1uF/50V 100pF 100pF 10uF/25V 0.1uF 470uF/25V Title 715G2472-A For VA1903W M AUDIO Size Document Number <Doc> Date: Monday , Nov ember 27, 2006 Sheet - 77 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 78 KEY _AUTO R005 1K 1/10W KEY _UP_RIGHT KEY 1 KEY _MENU Title KEY PAD Size Document Number 715G2473-A for VA1903WM KEY Date: Friday , Nov ember 24, 2006 Sheet - 78 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 79: Pcb Layout Diagram

    12. PCB Layout Diagram 12.1 MAIN BOARD PCB TOP VIEW - 79 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 80 12.2 MAIN BOARD PCB BUTTON VIEW - 80 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 81 - 81 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 82 12..3 POWER PCB TOP VIEW - 82 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 83 12.4 POWER PCB BUTTON VIEW - 83 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 84 12.5 KEY BOARD TOP VIEW 12.6 KEY BOARD BUTTON VIEW - 84 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...
  • Page 85 12.7 AUDIO PCB TOP VIEW & BUTTON VIEW % F D - 85 – ViewSonic Corporation Confidential - Do Not Cop VA1903wb/VA1903wm...

  • Page 86: Precautions And Safety Notices

    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 suggestion to the Director, Quality System & Process (marc.maupin@viewsonic.com) - 86 – ViewSonic Corporation...

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