ViewSonic VS11425 Service Manual
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ViewSonic VS11425 Service Manual

ViewSonic VS11425 Service Manual

20” color tft lcd display
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Service Manual

ViewSonic VG2030wm-1
Model No. VS11425
20" Color TFT LCD Display
(VG2030wm-1_SM Rev. 1a Nov. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VG2030wm-1 Model No. VS11425 20” Color TFT LCD Display (VG2030wm-1_SM Rev. 1a Nov. 2006) 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

    Specification Front Panel Function Control Description Circuit Description Adjustment Procedure Troubleshooting Flow Chart Block Diagram Schematic Diagrams PCB Layout Diagrams 10. Exploded Diagram and Exploded Parts List 11. Recommended Spare Parts List VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 4: Precautions And Safety Notices

    Power Source (IEC60950 or UL1950), or be applied exemption. (14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit (IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 5: Viewsonic Corporation

    Only touch the metal frame of the LCD panel Surface of the LCD panel is pressed by fingers or the front cover of the monitor. Do not touch and that may cause “Mura” the surface of the polarizer. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 6: Specification

    MIC Cable(1.8m, black) with PC 2001 USB Cable (V2.0) ViewSonic CD Wizard Arabic, English, Finnish, Spanish, German, Italian, Japanese, Swedish, Polish, Korean, Portuguese, Russian, Turkish , French, ViewSonic Quick Start Guide Czech, Hungarian, Simplified Chinese, Traditional Chinese PerfectSuite CD Screen Protector Mylar Foot Protector plastic...

  • Page 7: General Specification

    Shall be compatible with all PC type computers, Macintosh computers, Video Compatibility and after market video cards Resolution Compatibility Refer to Segment 5 Exclusions Not compatible with interlaced video USB INTERFACE No USB interface VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 8: Power Supply

    Power Consumption Blue With Audio 50W (typ) 55W (max) Power Consumption Without Audio 43W (typ) 48W (max) Active off Amber <1W <1W Recovery Time On Mode = N/A, Active Off < 3 sec VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 9 　 　 1024 x 768 @ 85 Hz, 68.7 KHz 　 　 　 　 1152 x 864 75 Hz, 67.5 KHz 　 　 　 　 1152 x 870 75 Hz, 68.7 KHz VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 10 CABLE TYPE / LENGTH 3.5MM STEREO CABLE / 1.8M LENGTH SPEAKERS SHOULD BE OFF WHEN THE REST AUDIO DPMS OF THE MONITOR IS IN POWER SAVING. * No any sympathetic or abnormal noise allowed. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 11 5ms (Typ) / 8ms (Max) Mercury 3.0 mg per lamp Panel Defects Please see Panel Quality Specifications. *The average of measured value from monthly shipment shall be equal or better than the Typical value above. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 12 Lv (5000K) / Lv (Def) x 100% > 75% CCT = 5000K Lv (Brightness) –Condition: 　 Lv(Brightness=0%) / Lv(Brightness=100%) x 100% Contrast = 100% Lv (Contrast) –Condition: 　 Lv(Contrast=0%) / Lv(Contrast=100%) x 100% Brightness = 100% VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 13 *Refer to Figure 1 Ergonomics ≧ 20º Tilt Up Tilt Down From 0º down to -3º ~ -5º ≧ 180º Swivel Right ≧ 180º Swivel Left 0 ~ ≧ 80 mm Height Adjust Pivot VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 14: Front Panel Function Control Description

    Scrolls through menu options and adjusts the displayed control. Also a shortcut to display the Contrast adjustment control screen. Displays the control screen for the highlighted control. Also toggles between two controls on some screens. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 15 • 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.) VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 16: Main Menu Controls

    Enabling this setting allows the LCD display to more accurately display colors the way they were originally intended. Enabling the sRGB setting will cause the Contrast and Brightness adjustments to be disabled. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 17 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 18 Resolution Notice allows the user to enable or disable this notice. If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1680 x 1050, the following screen appears. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 19 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. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 20: Circuit Description

    　   F ixed Last Line output for perfect panel capability 　 Host Interface  S upport MCU serial/parallel bus interface. 　  S upport MCU dual edge data latch. 　 VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 21 The following diagram presents the data flow among the gamma correction, dithering, overlay MUX, OSD LUT and output format conversion blocks. Auto-Adjustment There are two main independent auto-adjustment functions supported by RTD, including auto-position & auto-tracking. The operation procedure is as following; VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 22 Vt + to determine the Vt - (0.6V, 0.8V, 1.0V, 1.2V). We also can finely tune the voltage by minus 0.1V. For application, we can select different threshold voltage by the polarity of the HSYNC. The control register is CR97 VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 23 A chip-level shutdown control limits total supply current to 1 µA, making the device ideal for bat- tery-powered applications. Protection circuitry increases device reliability: thermal and short circuit. Undervoltage shutdown saves battery power for more essential devices when battery voltage drops to low leve. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 24: Adjustment Procedure

    1024 x 768 @ 85Hz, 68.7 kHz 27. 1152 x 864 @ 75Hz, 67.5 kHz 1152 x 864 @ 75Hz, 67.5 kHz 28. 1152 x 870 @ 75Hz, 68.7 kHz 1152 x 870 @ 75Hz, 68.7 kHz VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 25 42. 1600 x 1200 @ 60Hz, 75 kHz 1600 x 1200 @ 60Hz, 75 kHz 43. 1680 x 1050 @ 60Hz, 64.7 kHz 1680 x 1050 @ 60Hz, 64.7 kHz 1.4.2 Function Test Display Pattern VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 26 Gray Scale Pattern (Figure2) Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4) G. Color Pattern (Figure5) B. Color Pattern (Figure 6) Full White Patter (Figure 7) Dark Screen Pattern (Figure 8) VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 27 (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. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 28 After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again. 1.5.15 Power Off Monitor Turn off the monitor by pressing “Power” button. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 29 2.2.2 Connect P1 of Fixture with Monitor by VGA Cable. 2.2.3 Connect Power Cord to Monitor. 2.2.4 Connect PC to the additional monitor. I. ISP Download program procedure 1 Hardware Connect status: 2 Down load isp program Step 1: Execute ISP.exe VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 30 The connecting status between ISP status and Monitor. Turn off the power of monitor (AC plug off ) and disconnect the D-Sub connector . To connect the D-Sub connector and then turn on the power of monitor.(AC plug on) VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 31 1.Connect VGA Card and DDC Card with RS-232 cable. 2.Barcode Reader connect with keyboard and PC keyboard port. 3.Connect RS-232 Cable and VG2030 with VGA Cable. 4.(when key in DVI DDC information, use VGA transform to DVI port ) VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 32 3.When appear the PIC “ choose DDC Card”, Press ALT+2 .Enter DDC 2B test interface. Choose DDC Card 4.Press F8 to choose corresponding model.DAT(VG2030A.DAT press“ENTER” key) VG2030_A means the DDC under analog mode. VG2030D means the DDC under digital mode. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 33 6.Key in the serial number or use the barcode reader to scan the barcode of the monitor, and press “ENTER” key. 7.The successful picture is as follows. ”Compare EDID ：OK! Press any key to continue”. VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 34: Packing Procedure

    1.4 Place the LCD TV into the carton and then Put the other cushions on the LCD TV, put all the accessories into the carton. At last, close the carton and seal it with tape. (Figure 4) 1.Power Cord 2.VGA Cable 3.EAR Cable Figure 3 Figure 4 User’s Guide VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 35 1.1 Detach Dust Cover from the LCD TV and Unscrew 4 screws that secure Stand Unit. Dust Cover Stand 2. Disassembly of Rear Cover. 2.1 Unscrew 4 screws to remove Rear Cover. Rear Cover VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 36 3. Disassembly of Main Board,Power Board,IR Board,Speaker,Front Cover and Panel Unit. 3.1 Unscrew 2 screws to remove Bracket,fix. 3.2 Unscrew 15 screws to remove Front Bezel and Shield Plate. Shield Plate VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 37 3.2. Unscrew 5 screws and disconnect the wires to remove Power Board. Power Board 3.3. Unscrew 2 screws and disconnect the wires to remove Main Board. Main Board VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 38 3.4. Lay Panel Unit facedown and unscrew 4 screws on its right,left sides, to remove Panel Unit and Panel Bracket. Panel Bracket Panel VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 39: Troubleshooting Flow Chart

    6. Troubleshooting Flow Chart VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 40 6.1. NO POWER 6.2. MCU NO FUNCTION VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 41 6.3. NO DISPLAY VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 42: Block Diagram

    7. Block Diagram VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 43: Schematic Diagrams

    3.3V DGND VDA_1V8 2,3 VOUT VOUT VOUT C125 C107 C108 C106 100nF 10uF/16V 100nF 100nF DGND DGND DGND DGND M32-D80 M32-D80 DGND DGND ViewSonic Corporation Model Title DC TO DC Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 44 DGND R132 hunk modify D114 D116 D118 D120 add C154 , D115 D117 D119 D121 D122 D123 Q109 Shell DGND 1,3,4,5 DGND DGND DGND DGND ViewSonic Corporation Model Title INPUT Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 45 BG2P / TXE3+ R135 NC R136 137 AHS1 AHS1 AHS1 / V0 AVS1 AVS1 AVS1 / VCLK DGND LVDS_CON30 R185 R151 SCL_D1 BJT_B R152 SDA_D1 GND POWER ViewSonic Corporation Model Title SCALER Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 46 C148 C149 C150 C151 C152 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF Q106 ORANGE P5單向 P1雙向 2N3906 R180 10K LED_ORANG DGND MTV512M-LQFP48 P6單向 雙向 X1,X2 ViewSonic Corporation Model Title Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 47 1UF 0805 R613 DGND correct pin define DGND DGND R614 Q602 MUTE_S MUTE_S modify value 0627 R615 MMBT3904 SOLDER DGND 1,2,3,4 SIDE DGND DGND ViewSonic Corporation Model Title Audio Amplifier Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 48 8.6. PLACEMENT 改 9PIN 100mm DC power IN LVDS output connector KEY connector 90mm RTD 2553V Speaker Earphone D-SUB ViewSonic Corporation Model Title PLACEMENT Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 49 8.7. Power Key Board Contral_key_pad P701 POWER LED_ORANG LED_GREEN CON4 P=2.0mm GREEN ORANGE D701 S701 ViewSonic Corporation Model Title Power Key Board Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 50 8.8. Founction Key Board P702 MENU DOWN SELECT MUTE_S S706 S705 S704 S703 S702 ViewSonic Corporation Model Title Founction Key Board Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 51 OFF: 2.0V---5.0V 5.1K R953 Q906 2N3904 R920 5.1k R921 R914 5.1K 1/4WS 5.1K R915 Q911 5.1K 2N3904 Q913 Q907 R922 2N3904 5.1K R954 C915 R916 5.1K ViewSonic Corporation Model Title INVERTER Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 52 KSC2328 1000P C817 Q803 R825 R828 C803 C804 C814 0R F 0.1U 470pF Y2 470pF Y2 R815 R816 1206 1.8K 1206 S801 AC IN 100~240V ViewSonic Corporation Model Title POWER Date Rev: VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 53: Pcb Layout Diagrams

    9. Schematic Diagrams 9.1. MAIN PCB TOP VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 54 9.2. MAIN PCB BOTTOM VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 55 9.3. CON PCB TOP VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 56 9.4. CON PCB BOTTOM VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 57 9.5. IR PCB TOP VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 58 9.6. IR PCB BOTTOM VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 59 9.7. POWER PCB TOP VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 60 9.8. POWER PCB BOTTOM VIEW VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

  • Page 61: Exploded Diagram And Exploded Parts List

    10. Exploded Diagram and Exploded Parts List VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 62 VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...
  • Page 63 EXPLODED PARTS LIST ( VG2030wm-1) ViewSonic Model Number: VS11425 Rev: 1a Serial No. Prefix: QCC Item ViewSonic P/N Ref. P/N Description Q'ty 2024274401P FRONT BEZEL (VG2030WM) ABS HB PS-7604B/BLACK C 2044269001P FUNCTION KEY (VG2030WM) POWER KEY ABS HB AL-PLATE 2053756301P LED INDIC.-PWR VG2030WM/PMMA...
  • Page 64 PACKING PART LIST ( VG2030wm-1 ) ViewSonic Model Number: VS11425 Rev: 1a Item ViewSonic P/N Ref. P/N Location Q'ty VG2030WM1 monitor M-MS-0808-1317 2013053000P POLYETHY BAG P-00008209 2012194700P VG2030WM EPS (R) P-00008210 2012194800P VG2030WM EPS (L) 2013228806P POLYETHY BAG DC-00008164 2438501251P OWNER GUIDE...

  • Page 65: 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 66 5B01 2044269001P FUNCTION KEY (VG2030WM) POWER KEY ABS HB AL-PLATE 1F02 2044270701P FUNCTION KEY (VG2030WM) ABS HB AL-PLATE 1F04 M-MS-0808-9214 2051352100P NAME PLATE VIEWSONIC E015-006 3-BIRD LOGO 1F05 2051352800P NAME PLATE 38.00MM*5.90MM 1F06 2053756301P LED INDIC.-PWR VG2030WM/PMMA 1F03 2055134159P LABEL VG2030WM-1 VS11425 AUO TCO03...
  • Page 67 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty M-SCW-0824-0812 2084730062P SCREW,BND T+ M3X6(BND T+) 9S02 M-SCW-0824-0812 2084730062P SCREW,BND T+ M3X6(BND T+) 9S05 M-SCW-0824-0812 2084730062P SCREW,BND T+ M3X6(BND T+) 1F22 M-SCW-0824-0812 2084730062P SCREW,BND T+ M3X6(BND T+) 1F10 M-SCW-0824-0812 2084730062P SCREW,BND T+ M3X6(BND T+)
  • Page 68 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty E-R-0405-6410 2253210296P RES CHIP 1/10W RC 0603 1/10W1.0Kohm J T R101 E-R-0405-6410 2253210296P RES CHIP 1/10W RC 0603 1/10W1.0Kohm J T R129 E-R-0405-6410 2253210296P RES CHIP 1/10W RC 0603 1/10W1.0Kohm J T...
  • Page 69 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty 2253339396P RES CHIP 1/8W RC 0805 1/8 W39KohmJ T R926 2253339396P RES CHIP 1/8W RC 0805 1/8 W39KohmJ T R927 2253339396P RES CHIP 1/8W RC 0805 1/8 W39KohmJ T R928 2253347396P...
  • Page 70 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty 2342110296P CAP,CHIP 125'C CS 0805/COG/50V1000p J T C934 2342110296P CAP,CHIP 125'C CS 0805/COG/50V1000p J T C935 2342110296P CAP,CHIP 125'C CS 0805/COG/50V1000p J T C937 2342110296P CAP,CHIP 125'C CS 0805/COG/50V1000p J T...
  • Page 71 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty 2347210596P CAP,CHIP 125'C CS 0805/X7R/25V 1.0u K T C625 2347210596P CAP,CHIP 125'C CS 0805/X7R/25V 1.0u K T C626 2347210596P CAP,CHIP 125'C CS 0805/X7R/25V 1.0u K T C830 2347210596P CAP,CHIP 125'C CS 0805/X7R/25V 1.0u K T...
  • Page 72 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty 2360608496P FET,N-CH(SMD) 2N7002K-T1-E3 SOT-23VISHAY Q912 2360609096P FET,N-CH(SMD) 2N7002K SOT-23 PHILIPS Q908 2360609096P FET,N-CH(SMD) 2N7002K SOT-23 PHILIPS Q912 2360609196P FET,N-CH(SMD) 2N7002LT1G SOT-23 ON Q908 2360609196P FET,N-CH(SMD) 2N7002LT1G SOT-23 ON Q912 2360609496P FET,N-CH(SMD) 2N7002G SOT-23 Pyramis...
  • Page 73 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty 549 E-D-0403-1779 2364503996P DIODE,ZENER SMD BZV55-C5V6 5% SOD-80C PHILIPS D111 550 E-D-0403-1779 2364503996P DIODE,ZENER SMD BZV55-C5V6 5% SOD-80C PHILIPS D113 551 E-D-0403-1779 2364503996P DIODE,ZENER SMD BZV55-C5V6 5% SOD-80C PHILIPS D122 552 E-D-0403-1779...
  • Page 74 Item ViewSonic P/N Ref. P/N Description Universal number# Q'ty 628 N/A 2365807196P IC,LINEAR(SMD) AMC1117-3.3 SOT-223 ADD I101 629 E-IC-0401-2924 2365808196P IC,LINEAR(SMD) AP1117E33LA SOT-223AnaChip I101 630 N/A 2365808396P IC,LINEAR(SMD) AIC1117-33PY SOT-223AIC I101 631 N/A 2365809496P IC,LINEAR(SMD) CM1117SCM-3.3V SOT223 CHAMPION I101 632 N/A...
  • Page 75 GUARANT CARDVIEWSONIC WARRANTY CARD-C 2004 6P07 2056606025P SERIAL LABELVS CN WARRANTY CARD SN STICKER 6P08 743 N/A 2055613458P LABEL VIEWSONIC 2005 3C LABEL ROHS 6P10 744 M-LB-0813-0863 2056606010P SERIAL LABEL VIEWSONIC BOX STICKER-G 6P12 2056606009P SERIAL LABEL VIEWSONIC SERVICE STICKER-G...
  • Page 76 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) VG2030wm-1 ViewSonic Corporation Confidential - Do Not Copy...

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