ViewSonic VA2226w-1 Service Manual
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ViewSonic VA2226w-1 Service Manual

22” color tft lcd display
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Service Manual

ViewSonic VA2226w-1
Model No. VS11803
22" Color TFT LCD Display
(VA2226w-1_SM Rev. 1a Aug. 2007)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VA2226w-1 Model No. VS11803 22” Color TFT LCD Display (VA2226w-1_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 .................... 53 7. Block Diagrams ........................ 61 8. Schematic Diagrams ......................62 9. PCB Layout Diagrams ...................... 67 10. Exploded Diagram And Spare Parts List................ 71 11. Recommended Spare Parts List ..................74 ViewSonic Corporation VA2226w-1 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 5 4. Handling and Placing Methods ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 6 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 7: Specification

    USB Cable (V2.0) Arabic, English, Finnish, Spanish, German, ViewSonic CD Wizard Italian, Japanese, Swedish, Polish, Korean, Portuguese, Russian, Turkish , French, Czech, Hungarian, Simplified Chinese, Traditional ViewSonic Quick Start Guide Chinese Greek, Dutch. PerfectSuite CD Screen Protector Mylar Foot Protector plastic...
  • Page 8 Shall be compatible with all PC type Video Compatibility computers, Macintosh computers, and after market video cards Resolution Compatibility Refer to Segment 2-5 Exclusions Not compatible with interlaced video 2-3 USB INTERFACE No USB interface ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 9 Power Saving Operation(Method) VESA DPMS Signaling Mode Power Consumption Blue (typ) (max) Power Consumption Active off Amber <2W <1W Recovery Time On Mode = N/A, Active Off < 3 sec ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 10 1280 x 720 @ 50 Hz, 37.5 KHz 1280 x 720 @ 60 Hz, 45 KHz 1280 x 768 @ 50 Hz, 39.6 KHz 1280 x 768 @ 60 Hz, 47.8 KHz ViewSonic Corporation VA2226w-1 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 12 White Balance (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 2-6-4) ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 13 All reset No signal + [ ] + [2] Burning mode Signal + [2] + [ ] Factory Mode Remark : All the short cuts function are only available while OSD off ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 14 [2] = Change to Brightness OSD [Up] = Increase the OSD value setting [Dn] = Decrease the OSD value [Up]+[Dn]: Recall to default Brightness 1. Adjust range = 0 to 100 2. Default = 100 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 15 Change Color setting to 5400K [1]: Back to previous OSD status User Color [2]: Change to the selected color setting Jump to Red OSD directly [Up]: Move up the slider [Dn]: Move down the slider ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 16 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 17 1. Adjust range = 0 to 100 / ” 2. Key button definition: [1]: Back to Manual Image Adjust OSD [Up]: Increase the OSD value setting [Dn]: Decrease the OSD value Fine Tune ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 18 / OSD Pivot is selected, the Russian right-bottom side description will (When push the button on the bottom Set OSD language to Russian and keep in change to “[ 2 ]: / ” ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 19 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 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 20 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 21 If the power button is not in the locked mode, then power should return to it's previous state when power is restored after a power failure. The Power lock will be deactivated by pressing the front panel control buttons [1] + [▼] again for 10 seconds ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 22 2-6-6 Resolution Notice Actions 1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec 2. For auto input select function, it shall meet the requirement in Appendix D. ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 23 Color Temperature 6500K Volume Sharpness 100% Balance OSD H. Position Treble OSD V. Position Bass OSD Time Out 720x400 / 640x400 720x400 OSD Background Enable 2-7 AUDIO INTERFACE (SPEAKER SPECIFICATION) No Audio function ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 24 5ms (Typ) / 10ms (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 VA2226w-1 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 26 5ms (Typ) / 10ms (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 VA2226w-1 Confidential - Do Not Copy...

  • Page 27: Ddctest For: Viewsonic Va2226W

    Time: 11:23:00 Date: Tue Jun 05, 2007 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VA2226w ______________________________________________________________________ ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: ________________________________________ 0 | 00 FF FF FF FF FF FF 00 5A 63...

  • Page 28: ______________________________________________________________________

    ______________________________________________________________________ (54-71) Detailed Timing / Descriptor Block 1: 1680x1050 Pixel Clock: 146.25 MHz ______________________________________________________________________ Horizontal Image Size: 495 mm Vertical Image Size: 291 mm Refreshed Mode: Non-Interlaced Normal Display - No Stereo ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 29: ______________________________________________________________________

    Max Horiz. Freq - 82 KHz Pixel Clock - 170 MHz Secondary GTF - Not Supported ______________________________________________________________________ (108-125) Detailed Timing / Descriptor Block 4: Monitor Name: VA2226w (126) No Extension EDID Block(s) (127) CheckSum OK ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 30: 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 31 • 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 VA2226w-1 Confidential - Do Not Copy...

  • Page 32: Main Menu Controls

    Enabling the sRGB setting will cause the Contrast and Brightness adjustments to be disabled. 9300K-Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 33 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 34 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 VA2226w-1 Confidential - Do Not Copy...

  • Page 35: 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 36 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 37 - 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 38 70.0 74.250 61.8 66.0 94.880 Sun Ultra series 1152 x 900 71.8 76.2 108.230 71.7 67.2 117.010 1280 x 1024 81.1 76.0 134.990 60.0 1280 x 800 49.7 Industrial Standard 58.4 70.0 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 39 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 40 Frame rate 60Hz Response Time 5 ms (Typical), 10ms (Max.) Surface Hard coating (3H),AG(Haze 25%) Treatment Lamp 4 CCFL Outline 493.7(W) X 320.1(H)x16.5 (D) Dimension Brightness 80% (typ) / 75 % (min) uniformity ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 41 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 M220EW01 V0 (AUO). ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 42 0.313 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 (CLAA220WA01) ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 43 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 44 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 VA2226w-1 Confidential - Do Not Copy...

  • Page 45: 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 46 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 47 Set user preferred color temperature RS232: F/W RS232 debug on or off BANK, ADDR, VALUE, HTOTAL: F/W adjust the scaler register and htotal to panel for better performance. TIME: The time of backlight used. ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 48 7.2. Press the “connect” button in ISP.exe, and select the device type, which is used in this monitor. Choose the corresponding firmware version, and load to MCU. 7.3. After finish, please plug out power cable and re-start monitor again. ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 49 2. Pattern: full white at each modes Chroma signal 3. Brightness: Max. generator 4. Contrast: Default 5. Check power consumption State Power Consumption LED color Normal green Stand By amber Power Key Off ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 50 Disassembly Procedure BASE HINGE COVER STAND ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 51 Front Cover Back Cover ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 52 Keypad Board Chassis ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 53 Power Board Key Power Cable LVDS Cable ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 54 I/F Board ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 55 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 VA2226w-1 Confidential - Do Not Copy...

  • Page 56: 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 57 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 voltage is below 1V R809, R808,R814 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 58 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 VA2226w-1 Confidential - Do Not Copy...

  • Page 59: 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 60 6.5. Backlight can’t be turned on ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 61 6.6 Black Screen and backlight turn on ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 62: 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 63 6.8 Bad Screen ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 64: Block Diagrams

    7. Block Diagram ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 65: Schematic Diagrams

    CN901 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 66 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 67 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 68 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 VA2226w-1 Confidential - Do Not Copy...
  • Page 69 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 VA2226w-1 Confidential - Do Not Copy...

  • Page 70: Pcb Layout Diagrams

    9. PCB Layout Diagrams ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 71 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 72 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 73 ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...

  • Page 74: Exploded Diagram And Spare Parts List

    10. Exploded Diagram and Exploded Parts List ViewSonic Corporation VA2226w-1 Confidential - Do Not Copy...
  • Page 75 EXPLODED PARTS LIST ( VA2226w-1 ) ViewSonic Model Number: VS11803 Rev: 1a Serial No. Prefix: QQK Item ViewSonic P/N Ref. P/N Description Q'ty C-00008577 714030011200R ASSY,BEZEL,ASM,GENERAL,LE2275 B-00008567 791031500000R KEYPAD E-00008424 631102220091R PANEL 22" W 511150102600R FOIL,AL.,DOUBLE COND.LEFT,LE2239 511150102610R FOIL,AL.,DOUBLE COND.,RIGHT,LE2239...
  • Page 76 PACKING PART LIST ( VA2226w-1 ) ViewSonic Model Number: VS11803 Rev: 1a Item ViewSonic P/N Ref. P/N Location Q'ty 506120300430R BAG,PO+EPE,L590xW530xT0.6mm(PRINTED)LE2239 P-00008419 453010100380R CABLE,D-SUB 15P MALE 6FT BLACK/BLUE, ROH CB-00008190 453030300370R CABLE,DVI-D 18+1P MALE 6FT BLACK , ROHS A-00006733 453070800480R PWRCORD 7A/125V BLK 6FT CNS VCTF 3Gx0.75...

  • Page 77: Recommended Spare Parts List

    All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions. ViewSonic Corporation...
  • Page 78 BOM LIST ( VA2226w-1 ) ViewSonic Model Number: VS11803 Rev: 1a Serial No. Prefix: QQK Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 506380002100R TAPE WRAPPING TYPE(VIEWSONIC) 50mmx75M L 0.713 506431000300R FILM,PE 500mmx900M ROHS 506039000101R CORNER PAPER 1000x50x50xT3mmLE1711 2.778...
  • Page 79 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 631102220152RV LCP 22" CLAA220WA01(A)-011(CPT) CB-00008192 430303000840R HRN LVDS FFC 30P 187mm ROHS CB-00008353 430300801250R HRN ASS'Y 8P 185mm UL1571#28,RoHS 503060005800R GASKET,EMI,L80xW10xH6.5mm,LE2280 511150101800R FOIL,AL.,DOUBLE COND.,60x35xT0.07mm, LE2 503080001100R RUBBER﹐SILICON﹐THERMAL CONDUCT 45x10xt 701000004800R ASSY,CHASSIS,W/DVI, LE2275...
  • Page 80 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 VA2226w-1 Confidential - Do Not Copy...

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