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ViewSonic VA1703w Service Manual

17” color tft lcd display
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Service Manual

ViewSonic VA1703w/VA1703wb
Model No VS11668
17" Color TFT LCD Display
Manufacture Date: Jan-09-07
- 1 –
ViewSonic Corporation
Confidential - Do Not Cop
VA1703w/VA1703wb

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Summary of Contents for ViewSonic VA1703w

  • Page 1: Service Manual

    Service Manual ViewSonic VA1703w/VA1703wb Model No VS11668 17” Color TFT LCD Display Manufacture Date: Jan-09-07 - 1 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • 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 VA1703w/VA1703wb...

  • Page 4: Precautions And Safety Notices

    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 VA1703w/VA1703wb...
  • Page 5 That may cause “Mura.” Placing the monitor on foreign objects. That Place the monitor on a clean and soft foam could scratch the surface of the panel or cause pad. “Mura.” - 5 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 6 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 VA1703w/VA1703wb...

  • 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 VA1703w/VA1703wb...

  • Page 9: Front Panel Control And Indicators

    Front Panel Function Controls And Indicators - 9 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • 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 VA1703w/VA1703wb...
  • Page 11 2. To adjust selected color, press ▼ ▲ Important: If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode, colors return to the 6500K factory preset. - 11 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • 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 VA1703w/VA1703wb...
  • 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 VA1703w/VA1703wb...

  • 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 TSUM16AK Keyboard EPROM EPROM - 15 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 16 Start Circuit R904, R905,ZD901 CN902 Over Control IC Voltage Protect ON/OF OSC and MOSFET DC Convert Output Q805 Circuit Circuit Lamp Over ON/OFF Feedback Voltage Control Circuit Control IC - 16 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 17 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 and program operations. The devices can be programmed in standard EPROM programmers as well. - 17 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 18 Ground Device Power Supply Hold: Pause serial communication with the master device HOLD# INPUT without resetting the serial sequence. INPUT Serial Data Clock INPUT Serial Data Input - 18 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 19 This pin is to program the switching frequency. By connecting a resistor to ground to set the switching frequency. Unconnected pin Supply voltage pin Gate drive output to drive the external MOSFET - 19 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 20 Timing capacitor to set striking time and shutdown delay time Analog dimming or Internal LPWM dimming or external PWM pulse input for dimming function ISEN Current sense feedback VSEN Voltage sense feedback - 20 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 21 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 - 21 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 22: Block Diagram

    Block Diagram - 22 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 23: 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): SRGB color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03; Y = 260 ±20 cd/m - 23 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 24 3.)Into factory mode of VA1703w/VA1703wb A、First Power off, then press Switch 2 button along with press Power button will activate the factory mode, then MCU will do AUTO LEVEL automatically. Meanwhile press MENU the OSD screen will located at LEFT TOP OF PANEL.
  • Page 25 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. - 25 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 26 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 - 26 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 27 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) - 27 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 28 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) - 28 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 29 (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. - 29 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 30 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 - 30 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 31 2 Setup Procedure 2.1 Connect P2 of Fixture with printer port of PC by LPT Cable. 2.2 Connect P1 of Fixture with VA1703w/VA1903w Monitor by VGA Cable. 2.3 Plug Power Adapter to Fixture. 2.4 Connect Power Cord to VA1703w/VA1903w Monitor.
  • Page 32 P2：to LPT Cable 3 Firmware Upgrade Procedure Step 1. Let VA1703w/VA1903w set to be connected with AC cable and VGA cable. Step 2.Execute the MSstar ISP tool. Step 3. Click “Connect” button . (On this step, if the connection is successful, the “Device Type is ******(Flash Type)”...
  • Page 33 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. - 33 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 34 Step 6. If the flashing F/W has been completed, “Verify Ok” message will be shown on the right TextBox. Step 7. Unplug and replug power cord of VA1703w/VA1903wset and then check the OSD operation and image on srceen. Step 8. At last, do “Memory Recall.”...
  • Page 35 3.2 Setup Procedure 3.2.1 Connect P2 and monitor of Fixture with VGA ports of VA1703w/VA1903w by VGA Cable. 3.2.2 Connect P1 of Fixture with Printer port of PC by LPT Cable. 3.2.3 Plug Power Adapter to Fixture. 3.2.4 Connect Power Cord to VA1703W/VA1903W Monitor.
  • Page 36 - 36 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 37 Sep2:Inpute the S/N and execute “Enter” - 37 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 38 - 38 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 39 Sep3:Key the “Enter” and write the data - 39 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 40 Sep4:If ddc program OK and show “data compare ok” - 40 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 41: Packing Procedure

    5.7 Packing Procedure - 41 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 42: Troubleshooting Flow Chart

    Troubleshooting Flow Chart - 42 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 43: Recommended Spare Parts List

    Recommended Spare Part List VA1703w BOM list——T76HM5DK1WVWNJ ViewSonic Universal Item Ref. P/N Description Location Q'ty number# CBPC6HM5VWJ1 G1558-1-VS-X-3-061220 KEPC6JB7 KEPC BOARD PWPC721HV1J G2274-1-VS-X-1-070126 15G8239 1 Kensington bracket 23G3178709 3A VSC17-LCD FRONT LOGO 23G3178709 4A VSC17-LCD FRONT LOGO 40G 45760819A MODEL LABEL...
  • Page 44 56G1133 34 IC M24C02-WMN6TP U404 56G1133713 X PM25LV010A-100SCE U402 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q402 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q701 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q703 - 44 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 45 CHIPR 10KOHM+-5% 1/10W R425 61G0603103 CHIPR 10KOHM+-5% 1/10W R426 61G0603103 CHIPR 10KOHM+-5% 1/10W R444 61G0603103 CHIPR 10KOHM+-5% 1/10W R452 61G0603103 CHIPR 10KOHM+-5% 1/10W R470 61G0603103 CHIPR 10KOHM+-5% 1/10W R486 - 45 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 46 C409 65G0603104 32 CHIP 0.1UF 50V X7R C410 65G0603104 32 CHIP 0.1UF 50V X7R C411 65G0603104 32 CHIP 0.1UF 50V X7R C412 65G0603104 32 CHIP 0.1UF 50V X7R C413 - 46 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 47 FB404 71G 56Z601 M CHIP BEAD 0805 600OHM FB405 71G 56Z601 M CHIP BEAD 0805 600OHM FB406 93G 39147SEM ZMM5V6 D406 93G 39147SEM ZMM5V6 D408 93G 39147SEM ZMM5V6 D409 - 47 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 48 1.02 56G 139 7 1 IC EL817MA M-TYPE IC902 61G152M688 64 0.68OHM +-5% 2W R920 63G 10747410S 0.47UF +-10% 250VAC C903 65G 3J1506ET 15PF 5% SL 3KV TDK C816 - 48 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 49 RST CHIP 1K 1/8W 1% R928 61G0805100 1F RST CHIP 1K 1/8W 1% R931 61G0805100 2F RST CHIP 10K 1/8W 1% R804 61G0805100 2F RST CHIP 10K 1/8W 1% R812 - 49 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 50 R929 61G1206102 CHIP 1K OHM 5% 1/8W R932 61G1206103 CHIP 10KOHM 5% 1/8W R803 61G1206249 RST CHIPR 2.4 OHM +-5% 1 R916 61G1206434 RST CHIPR 430 KOHM +-5% R904 - 50 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 51 93G 39S 40 T RLZ13B ROHM ZD904 93G 39S 45 T RLZ36B ZENER DIODE ZD901 6G 31500 2.0MM EYELET CN901 6G 31502 1.5MM RIVET C905 6G 31502 1.5MM RIVET L901 - 51 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 52 SHRINR TUBE UL/CSA 61G152M10458G 100K OHM 5% 2W R910 96G 29 6 SHRINK TUBE UL/CSA 57G 667 30 2SK2645-54MR TO-220F Q903 90G6084 1 HEAT SINK AM1G1730 8120 SCREW XN01A - 52 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 53 93G 60245 DIODE SP10150 ITO-220 D904 AM1G1730 8120 SCREW XN01A Diversity of T76HM5DB1WVWNJ compared with T76HM5DK1WVWNJ ViewSonic Universal Item Ref. P/N Description Location Q'ty number# 89G404A18N LS POWER CORD - 53 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 54: Exploded Diagram And Spare Parts List

    8. Exploded Diagram And Spare Parts List - 54 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 55 A34G0247 KR L SCREW FOR STD/MF M1G1740 8120 BASE A34G0028 KR L FOOT J12G 394800 SCREW M1G2640 10 47 CR3 SCREW Q1G 330 8 47 CR3 HINGE COVER A34G0029 KR L - 55 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 56 Packing For Shipping - 56 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 57 CD MANUAL J70G170170921A J41G780170915A PE BAG J45G 88606 R MONITOR T76HM5DK1WVWNJ PE BAG J45G 88607 R J44G7010 1/2 POWER CORD 89G402A18N LS SIGNAL CABLE 89G 728HAA902 BASE A34G0028E7Z L - 57 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 58: Disassemble Process

    10、 Lift up the main frame and lift down the LVDS connectors according to the direction of the arrowhead, refer to the following picture 18,19. 11、 That’s all. The disassemble process of the unit is over. 9.1.3 Show pictures ： （Picture 1） （Picture 2） - 58 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 59 （Picture 3） （Picture 4） （Picture 5） （Picture 6） （Picture 7） （Picture 8） （Picture 9） （Picture 10） - 59 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 60 （Picture 11） （Picture 12） （Picture 13） （Picture 14） （Picture 15） （Picture 16） （Picture 17） - 60 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 61 （Picture 18） （Picture 19） （Picture 20） - 61 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 62: Block Diagram

    Block Diagram - 62 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 63: Schematic Diagram

    5.PANEL INTERFACE PC5V VCTRL VCTRL +3V3 VCC1.8 Adj_BACKLIGHT Adj_BACKLIGHT VCC3.3 VLCD VLCD_12V G1558-1-VS-X-3-061220 Title 4.SCALER VLCD TSUM16AK-1 VLCD_12V Size Document Number 2.POW ER Date: Thursday , December 21, 2006 Sheet - 63 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 64 Q707 on_Panel_12V C715 0.1uF C717 R727 G1558-1-VS-X-3-061220 C718 10uF/16V 10K 1/10W 5% C720 C719 R728 0.1uF Title TSUM16AK-1 Size Document Number POWER Date: Thursday , December 21, 2006 Sheet - 64 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 65 D424 10K 1/10W 5% ESD_5V G1558-1-VS-X-3-061220 C447 C448 C449 C450 C451 C452 C453 C454 D425 Title TSUM16AK-1 Size Document Number INPUT RLZ36B Date: Thursday , December 21, 2006 Sheet - 65 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 66 KEY _AUTO KEY _MENU KEY _RIGHT KEY _LEFT POWER KEY _C OUT-L+ OUT-R+ G1558-1-VS-X-3-061220 OUT-L- OUT-R- Title TSUM16AK-1 Size Document Number CONN SCALER Date: Thursday , December 21, 2006 Sheet - 66 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 67: Panel Interface

    C104 C105 R108 LVA3M RXE3- RXE3+ LVA3P VLCD_12V R109 NC/IL-FHR-B50S-HF (JAE) CONN VLCD VLCD G1558-1-VS-X-3-061220 Title TSUM16AK-1 Size Document Number PANEL INTERFACE Date: Thursday , December 21, 2006 Sheet - 67 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 68 RK7002 D803 LL4148WP Q806 RK7002 C803 D804 LL4148WP Q807 RK7002 TPV (Top Victory) Electronics Co., Ltd. Title G2274-B-VS-X-4-061218 Size Document Number PWPC721HV1J Date: Monday , December 18, 2006 Sheet - 68 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 69 Pitch 2.54mm CONN CN901 IC904 R936 2.43KΩ 1% 1/8W SOCKET KIA431A-AT/P TPV (Top Victory) Electronics Co., Ltd. Title G2274-B-VS-X-4-061218 Size Document Number PWPC721HV1J Date: Monday , January 08, 2007 Sheet - 69 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 70 FB01 SPK-R 120 OHM 100pF CONN 100pF A_GND SPK-L A_GND AOC (Top Victory) Electronics Co., Ltd. Title KEY PAD Size Document Number Date: Tuesday , March 21, 2006 Sheet - 70 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...

  • Page 71: Pcb Layout Diagram

    12. PCB Layout Diagram 12.1 MAIN BOARD PCB TOP VIEW - 71 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 72 12.2 MAIN BOARD PCB BUTTON VIEW - 72 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 73 12..3 POWER PCB TOP VIEW - 73 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 74 12.4 POWER PCB BUTTON VIEW - 74 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 75 12.5 KEY BOARD TOP VIEW 12.6 KEY BOARD BUTTON VIEW - 75 – ViewSonic Corporation Confidential - Do Not Cop VA1703w/VA1703wb...
  • Page 76 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) - 76 – ViewSonic Corporation...

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