ViewSonic VG1921wm Wartungshandbuch

ViewSonic VG1921wm-2 Model No. VS11354 19” Color TFT LCD Display (VG1921wm-2_SM Rev. 1a Sep. 2006) ViewSonic 381 B

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 7 29 1280 x 768 @ 60 Hz, 47.8 KHz    DMT; 30 1280 x 768 @ 75 Hz, 60.3 KH

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 8 Signal + [2] + [] + Main Power On Factory Mode Remark : All the short cuts functio

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 9 3. Front Panel Function Control Description Adjusting the Screen ImageUse the bu

Do the following to adjust the display setting:1. To display the Main Menu, press button [1].NOTE: All OSD menus and adjustment screens disappear auto

Main Menu ControlsAdjust the menu items shown below by using the up S and down T buttons.Control ExplanationAuto Image Adjust sizes and centers the sc

Control ExplanationUser Color Individual adjustments for red (R), green (G), and blue (B).1. To select color (R, G or B) press button [2].2. To adjust

Control ExplanationFine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries.NOTE: Try Auto Image Adjust first.Sharpness adj

4. Circuit Description 4.1 Switching Mode Power Supply 4.1.1 AC Current Input Circuit P801 is a connector for connecting AC Power. F801 is a fuse to

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 15 2V to pin10 of IC501 enables the IC and activates the striking timer. The SSTCMP

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 16 b. When in power-saving mode, U105 # 91 is pulled high and U105 # 92 is pulled do

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 i Copyright Copyright © 2006 by ViewSonic Corporation. All rights reserved. No par

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 17 2V to pin10 of IC501 enables the IC and activates the striking timer. The SSTCMP

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 18 4.6 AC Outlet Pin Assignment Pin Symbol Descr

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 19 Pin No. Symbol Function 1 RXO0- minus signal of odd channel 0(LVDS) 2 RXO0+

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 20 Pin No. Symbol Function 1 RXO0- minus signal of odd channel 0(LVDS) 2 RXO0+

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 21 4.8 Key Parts Pin Assignment 4.8.1 IC802 (TOP245Y or TOP246Y, Power Cont

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 22 13 NC Not connected 14 AVDD_DC I ADC Power 15 REXT External resistor 390

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 23 53 MODE[1] I Chip Configuration Input 54 LVA3P O A-Link Positive LVDS Diffe

90 GPIO_P02/SAR3 I/O General Purpose Input/Output; 4mA driving strength/SAR ADC Input 91 GPIO_P06 I/O General Purpose Input/Output; 6/12mA programma

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 25 5. Adjustment Procedure 1. Key Function Description CONTROL KEY KEYS FUNCTION

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 26 Sharpness + / - English French German Italian Spanish Finnish Japanese Simplif

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 ii TABLE OF CONTENTS 1. Precautions and Safety Notices 12. Specification 43

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 27 Deactivate Resolution Notice Menu Push button [2] under Resolution Notice OSD,

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 28 7.2 Using mStar ISP Tool Update FW: (1). Seletct “Read”, Choose the correspo

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 29 (4). When the picture show “Verify OK”, ISP finished. 8 After repair, to

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 30 Color Temperature 1. Do “Auto color” at 640 x 480@60Hz, 5-Mosic pattern 2. Measu

Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Paste protection film to protect the monitor. (Figure 1

Disassembly Procedure ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 32

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ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 36 6. Troubleshooting Flow Chart 1. Common Acknowledge  If you change the int

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 1 1. Precautions and Safety Notices 1. SAFETY PRECAUTIONS This monitor is manufactu

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 37 2. No Power & Power LED Off No power Check primary rectifier voltage Chec

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 38 3. DC output voltage is unstable Unstable power Check sampling Circuit Check

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 39 4. Output power is unstable Unstable power Check sampling Circuit Check R8

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 40 5. Backlight can’t be turned on U105 FAILBlack screenCheck pin4 of CN101Chec

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 41 6. Black Screeqn and backlight turn on Black ScreenPower FailCheck Power Supply

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 42 7. White Screen ENDWhite screenCheck LVDS signalCheck Q101,Q103,Q110,C108,C109

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 43 8. Bad Screen Check the pins of U105Bad ScreenCheck Crystal:pin96,97 of U105

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 44 7. Recommended Spare Parts List Rev: 1aSerial No. Prefix: QABItem ECR/ECN ViewSon

ViewSonic Model Number: VS11354Serial No. Prefix:QABRev.: 1aItem ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty1 P-00008029 5

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 46 8. Exploded Diagram and Exploded Parts List

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 2 4. Handling and Placing Methods

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 47 ViewSonic Model Number: VS11354Rev: 1aSerial No. Prefix: QABItem ViewSonic P/N Re

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 48

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 49 ViewSonic Model Number: VS11354Rev: 1aItem ViewSonic P/N Ref. P/N Location Q&apos

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 50 9. Block Diagram XTAL14.318MHzTOP245YNOPP/OCPLDO5V-3.3V5V-1.8VTransformer1OZ993

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 51 10. Schematic Diagrams ModelTitleDate Rev:ViewSonic CorporationDc to DcFrom Powe

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 52 ModelTitleDate Rev:ViewSonic CorporationInputBGRDETECTSCL_DVIDAT2-DAT2+DAT1-DAT1

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 53 ModelTitleDate Rev:ViewSonic CorporationScalerI2C_MDAI2C_MCLI2C_MDAI2C_MCL123424

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 54 ModelTitleDate Rev:ViewSonic CorporationKeypad & Power keyPOWER▼▼1MUTE2From

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 55 ModelTitleDate Rev:ViewSonic CorporationAudioLayout guide :1. Tie the I.C. pin

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 56 ModelTitleDate Rev:ViewSonic CorporationInverterop3op2op1op2op1op3ON/OFFVCC5V3BR

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 3

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 57 ModelTitleDate Rev:ViewSonic CorporationPowerAC 264V RMSAC 264V RMSTO SCALER B

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 58 11. PCB Layout Diagrams

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 59

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 60 * Reader’s Response* Dear Readers: Thank you in advance for your feedback on our

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 4 2. Specification 1. INTPRODUCTION FEATURES VG1921wm Size 19 ” Luminance (Typ) 300

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 5 Video Impedance 75 Ohms (Analog) Maximum PC Video Signal 950 mV with no damage t

ViewSonic Corporation Confidential - Do Not Copy VG1921wm-2 6 5 ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency 30