ViewSonic VA2016W - 20" LCD Monitor Service Manual
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ViewSonic VA2016W - 20" LCD Monitor Service Manual

20” color tft lcd display
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Service Manual

ViewSonic VA2016w-2
Model No. VS11802
20" Color TFT LCD Display
(VA2016w-2_SM Rev. 1a Aug. 2007)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VA2016W - 20" LCD Monitor

  • Page 1: Service Manual

    Service Manual ViewSonic VA2016w-2 Model No. VS11802 20” Color TFT LCD Display (VA2016w-2_SM Rev. 1a Aug. 2007) 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

    6. Trouble Shooting Flow Chart .................... 51 7. Block Diagrams ........................ 59 8. Schematic Diagrams ......................60 9. PCB Layout Diagrams ...................... 65 10. Exploded Diagram And Spare Parts List................ 69 11. Recommended Spare Parts List ..................73 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 4: Precautions And Safety Notices

    Keep wires away from high voltage, high temperature components and sharp edges. Keep wires in their original position so as to reduce interference. Adjustment of this product please refers to the user’ manual. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 5 4 Handling and Placing Methods ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 6 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 7: Specification

    USB Cable (V2.0) ViewSonic CD Wizard Arabic, English, Finnish, Spanish, German, Italian, Japanese, Swedish, Polish, Korean, Portuguese, Russian, Turkish , French, Czech, Hungarian, Simplified Chinese, ViewSonic Quick Start Guide Traditional Chinese Dutch, Greek, PerfectSuite CD Screen Protector Mylar Foot Protector plastic...
  • Page 8 Shall be compatible with all PC type computers, Video Compatibility Macintosh computers, and after market video cards Resolution Compatibility Refer to Segment 4-5 Exclusions Not compatible with interlaced video 2-3 USB INTERFACE No USB interface ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 9 Power Saving Operation(Method) VESA DPMS Signaling Mode Power Consumption Green 38W (typ) 43W (max) Power Consumption Active off Amber <2W <1W Recovery Time On Mode = N/A, Active Off < 3 sec ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 10 1280 x 720 @ 60 Hz, 45 KHz 1280 x 768 @ 50 Hz, 39.6 KHz 1280 x 768 @ 60 Hz, 47.8 KHz 1280 x 768 @ 75 Hz, 60.3 KHz ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • 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 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 12 (Keep pushing 5 sec) 1. It will not shown on user’s guide 2. OSD message as below, (Image = no blanking) [1] + [▲] OSD Lock (refer to segment 4-6-4) [1] + [▼] Power Lock ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 13 Level 3 Auto Image Adjust 1. Background = blanking 2. The message OSD position is at the center. 3. After auto tune, OSD shall be off 4. Only for analog mode Contrast/Brightness Contrast ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 14 2. Key button definition: User Color [1]: Back to previous OSD status [2]: Change to the selected color setting Jump to Red OSD directly [Up]: Move up the slider [Dn]: Move down the slider ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 15 2. Default = 100 3. Key button definition: [1]: Back to Color Adjust OSD [2]: Jump to Red OSD [Up]: Increase the OSD value setting [Dn]: decrease the OSD value setting Information ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 16 / ” [1]: Back to Manual Image Adjust OSD [Up]: Increase the OSD value setting [Dn]: Decrease the OSD value Fine Tune 1. Adjust range = 0 to 100 2. Key button definition: ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 17 “[ 2 ]: / ” the top item Set OSD language to Japanese and keep in Language Select OSD Korean Set OSD language to Korean and keep in Language Select OSD Simplified Chinese ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 18 3. Key button definition: [1]: Back to Setup Menu OSD [2]: Change to OSD H. Position OSD [Up]: Increase the OSD value setting (move OSD up) [Dn]: Decrease the OSD value setting (move OSD down) ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 19 3 seconds. 3. Clean FIFO timing mode buffer 4. Execute Auto Image Adjust Note: Memory Recall should not effect on Mute, Language, Power Lock, User Color Settings or Input Priority ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 20 *5 Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD Locked” or “OSD Unlocked” for 3 seconds as below, OSD Locked OSD Unlocked *6 When OSD appears on screen, the OSD Lock/Unlock short cut key will be disabled. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 21 *5 Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “Power Button Locked” or “Button Unlocked” for 3 seconds as below, Power Button Locked Power Button Unlocked ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 22 (Should not reset by power off, power unplug and others) 2-6-8 OSD Auto Save The OSD shall save new settings when it is turned off by the user or when it times out. There shall not be a separate save ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 23 Contrast Input Priority Brightness 100% Resolution Notice Color Temperature 6500K Volume Sharpness 100% Balance OSD H. Position Treble OSD V. Position Bass OSD Time Out 720x400 / 640x400 720x400 OSD Background Enable ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 24 5ms (Typ) / 12ms (Max) Mercury 3.0 mg per lamp Panel Defects Please see Panel Quality Specifications. *Over 50% units of shipment shall be equal or better than the Typical value above. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 25 5ms (Typ) / 8ms (Max) Mercury 3.0 mg per lamp Panel Defects Please see Panel Quality Specifications. *Over 50% units of shipment shall be equal or better than the Typical value above. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 26 13:40:21 Date: Wed Apr 18, 2007 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VA2016w-2 ______________________________________________________________________ ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: ________________________________________ ______________________________________________________________________ (08-09) ID Manufacturer Name ________________...
  • Page 27 Max Horiz. Freq - 82 KHz Pixel Clock - 170 MHz Secondary GTF - Not Supported ______________________________________________________________________ (108-125) Detailed Timing / Descriptor Block 4: Monitor Name: VA2016w-2 (126) No Extension EDID Block(s) (127) CheckSum OK ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 28: Front Panel Function Control Description

    Image Adjust. Scrolls through menu options and adjusts the displayed control. Displays the Main Menu or Also a shortcut to exits the display the control screen Contrast and saves adjustment control adjustments. screen. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 29 • 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.) ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 30: Main Menu Controls

    9300K-Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). 6500K-Adds red to the screen image for warmer white and richer red. 5400K-Adds green to the screen image for a darker color. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 31 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 32 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. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 33: Circuit Description

    The parts including C816,C817,C819 and L802 are used to smooth the current waves. 1.4 Feedback and OVP Protect Circuit Pin R of IC803 is supplied 2.5V stable voltage. It is connected to 5V and 14V output through ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 34 AC voltage, the AC signal IS1 invert DC voltage through D509, R515, C533, and the high level DC voltage reaches the gate pin of Q502, similarly, the gate pin of Q503, Q504, ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 35 - U105 (TSUM56AK) is a scalar IC with MCU. - U105 #105~#114 and #118~#127output 8 bit LVDS digital data to panel control circuit through CN105. - U106 is a flash memory IC for program. - U107 is a EEPROM IC. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 36 Note: 1. Non-interlace signals only (An interlace signal cannot be display) 2. Please refer to F/W specification for more detail 3. Each frequency of Power Macintosh and Sun Ultra is a reference value ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 37 LVDS Differential data input Channel RxE0- Ground 0(-) LVDS Differential data input Channel RxE0+ Power supply (+5.0V) 0(+) Ground Power supply (+5.0V) LVDS Differential data input Channel RxE1- Power supply (+5.0V) 1(-) ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 38: Key Parts Pin Assignments

    Normally White Frame rate 60Hz Response Time 5 ms (Typical), 12ms (Max.) Surface Treatment Hard coating(3H),AG(Haze 25%) Lamp 4 CCFL Outline Dimension 459.4(W) X 296.4(H)x16.6 Brightness uniformity 80% (typ) / 75 % (min) ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 39 White y 0.329 Luminance Uniformity 9 points measurement White Luminance at [cd/m CCFL 7.0mA(center point) The test methods for the above items’ definition please refer to the specification of M201EW02 V8 (AUO). ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 40 White White y 0.329 Luminance Uniformity 9 points measurement White Luminance at [cd/m CCFL 7.0mA(center point) The test methods for the above items’ definition, please refer to the specification of CPT (CLAA201WA04) ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 41 Reference voltage output Supply voltage for IC High side driver buffer output PDRV1 Top MOSFET gate drive output in dual forward converter PDRV2 Top MOSFET gate drive output in dual forward converter ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 42 This unconnected pin ensures adepuate creepage distance. Ensure a clean and Connected to the high-voltage rail, this pin injects a lossless start-up constant current into the Vcc capacitor during the sequence start-up sequence ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 43: Adjusting Procedure

    Activate the Auto Adjustment function to optimize the picture performance automatically 1.2 Hot Key Operation DESCRIPTION FUNCTION Power status Factory ● ● Enter Factory Mode Mode Activate Auto Adjustment Auto ● ● function ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 44 USER TEMPERATURE USER/RED 100% USER/GREEN 100% USER/BLUE 100% sRGB 6500K 9300K 6500K 5400K OSD MENU EXIT CENTER POSITION RIGHT CENTER LEFT PHASE By Timing HORIZONTAL POSITION VERTICAL POSITION INFORMATION BY TIMING RECALL ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 45 - Press “Power” to power off the monitor. - Enter the Factory Mode. - Then press the “Menu/POWER” to execute Auto Color item. - After the “Auto Color” process finished, please press “Power” to restart monitor. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 46 9300K x = 0.283 +/- 0.03, y = 0.298+/-0.03 Modes switching 1. Use Chroma Pattern Generator to make sequence. check VESA (640x480 800x600 1024x768 1280x1024), Chroma and power saving signal,etc. Signal Generator ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 47 2. Pattern: full white at each modes Chroma signal 3. Brightness: Max. generator 4. Contrast: Default 5. Check power consumption State Power ConsumptionLED color Normal green Stand By amber Power Key Off ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 48 Disassembly Procedure BASE HINGE COVER STAND ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 49 Front Cover Back Cover ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 50 Keypad Board Chassis ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 51 Power Board Key Power Cable LVDS Cable ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 52 I/F Board ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 53 1.3 Put the cushions on the monitor. 1.4 Place the monitor into the carton and then put all the accessories into the carton. At last, close the carton and seal it with tape.(Figure3) AUDIO MONITOR Figure 3 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 54: Troubleshooting Flow Chart

    If you find the vertical line or horizontal line lost on the screen, please change panel. If you find the speaker don’t working, please don’t plug in audio cable, unless change new speaker. ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 55 Check pin6 of IC802 voltage CheckC810,D803,C80 about 12V Check pin2 of IC802 Check primary OVP, voltage about 3V OLP and secondary Check R811, R810, Check pin1 of IC802 R809, R808,R814 voltage is below 1V ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 56 Check pin2 of Check R818, D804, C807 if IC802 voltage short is 3V Change R818, D804, C807 Check pin1 of Change R808, R 809, IC802 voltage R810, R 811, R815, below 1V ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 57: Output Power Is Unstable

    IC803 IC803 Check R819, R820 Check pin2 Check R818, D804, C807 if short of IC802 Change R818, D804, Check pin1 of Change R808, R 809, R810, R 811, IC802 voltage R815, ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 58 6.5. Backlight can’t be turned on ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 59 6.6 Black Screen and backlight turn on ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 60: White Screen

    6.7 White Screen White screen LVDS Cable Workmanship Reinsert Change LVDS cable NG LVDSCable Check VLCD Check LVDS Panel Fail is 5V signal Check Panel-Enable of U105 Fail U105(pin48) Check Q101,Q103,Q110, C108, C109 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 61 6.8 Bad Screen ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 62: Block Diagram

    7. Block Diagram ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 63: Schematic Diagrams

    8P 1.5mm 90° From IF BD LED901 SW901 SW902 SW903 SW904 SW905 LED Y/B TACT-4.3 TACT-4.3 TACT-4.3 TACT-4.3 TACT-4.3 ▼ ▼ POWER ViewSonic Corporation Model Keypad & Power key Title Date Rev: ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 64 NC/ 1K C810 12K 1% 0.1/50V CN801 MUTE P801 AC_SKT BRIGHTNESS 3 TO SCALER BD CN101 ON/OFF VCC5V 3 C825 ViewSonic Corporation 60mm 8P 0.1/50V Model Power Supply SCH Title Date Rev: ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 65 15K 1%/NC R518 2200p/50V 470K 1% C518 0.1/50V R537 10K 1% R519 C519 R539 0.1/50V 5.1K 1% D506 BAT54 R538 ViewSonic Corporation 10K 1% C517 2200p/50V Model 20/22 inverter Title Date Rev: ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 66 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 D106 D202 BAV70 BAV70 PC5V_VGA DVI5V VCC3.3 VCC3.3 U103 ViewSonic Corporation U201 WP_VGA 3 DDCA_SCL DDCA_SDA WP_VGA Model SCL_DVI AT24C02BN SDA_DVI Input Title AT24C02BN Date Rev: ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 67 0805 packaging. VCC3.3 U102 U101 VCC1.8 VCC5V VDDC_18 AVDD_18 LD1117AL-1.8V AP1084K33LA VOUT VOUT FB103 D101 0Ω C102 SKS20-04AT C105 C104 C103 ViewSonic Corporation 0.1/16V 0.1/16V 100u/16V 0.1/16V Model SCALER Title Date Rev: ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 68: Pcb Layout Diagrams

    9. PCB Layout Diagrams ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 69 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 70 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 71 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...

  • Page 72: Exploded Diagram And Spare Parts List

    10. Exploded Diagram and Exploded Parts List ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 73 EXPLODED PARTS LIST ( VA2016w-2 ) ViewSonic Model Number: VS11802 Rev: 1a Serial No. Prefix: QPC Item ViewSonic P/N Ref. P/N Description Q'ty 714030011000 ASSY BEZEL LE2081 C-00008566 B-00008567 791031500000 KEYPAD BOARD 631102200161 PANEL 20" W E-00008390 511150102820 FOIL,AL.,DOUBLE COND.,L140xW70mm,LE2016...
  • Page 74 ViewSonic Corporation VA2016w-2 Confidential - Do Not Copy...
  • Page 75 PACKING PART LIST ( VA2016w-2 ) ViewSonic Model Number: VS11802 Rev: 1a Item ViewSonic P/N Ref. P/N Location Q'ty P-00008337 506120303600R BAG,EPE+PO,L540xW570xT0.53MM,PRINTED 453010100380R CABLE,D-SUB 15P MALE 6FT BLACK/BLUE A-00006733 453070800480R PWRCORD 7A/125V BLK 6FT CNS VCTF 3Gx0.75 P-00008599 506040003410R CUSHION,RIGHT, LE2082...

  • Page 76: 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.
  • Page 77 Serial No. Prefix: QPC Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 506380002100R TAPE WRAPPING TYPE(VIEWSONIC) 50mmx75M L 506431001200R FILM,PE 1335x1120xT0.1mm 1.25 506431000300R FILM,PE 500mmx900M ROHS 506039000100R CORNER PAPER 1000x50x50xT5mm 506039001200R CORNER PAPER 820x50x50mm 506039004800R CORNER PAPER 1770x50x50xT5mm LE1909 ROHS 506150009710R PALLET,L1190xW1080xH130mm,LE2082 1.25...
  • Page 78 503020002710R RUBBER FOOT L14.8*W9.6*T3.5mm (PATTERN)R Front Panel 714030011100R ASSY BEZEL LE2082 501010200900R BEZEL,FRONT,LE2082 501010211500R BEZEL,COVER,Down,LE2082 506102000300R LOGO PLATE VIEWSONIC LE1709 501110601000R LOGO THREE BRIDS 7.9MM LE2082 501030207300R BUTTON,KEY,LE2280 ROHS 501120106400R LENS,LE2280 701000004900R ASSY,CHASSIS,W/O DVI for CPT LE2082 502090307400R CHASSIS,W/O DVI,CPT,LE2082,ROHS...

  • Page 79: Block Diagrams

    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 VA2016w-2 Confidential - Do Not Copy...

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