ViewSonic VE1920wmb-2 Service Manual

ViewSonic VE1920wmb-2 Model No. VS10866 19” Color TFT LCD Display (VA1920wmb-2_SM Rev. 1a Aug. 2006) ViewSonic 381 Brea

7 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 3. Front Panel Function Control Description Front Panel Hardware Controls Power

8 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Main Menu Controls Auto Image Adjust*1 Contrast/Brightness*2*4 Input Select Ana

9 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 for 10 seconds. Note 1: Status bar indicating Power Button lock or unlock is

10 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 OSD Table Layer 1 Layer 2 Layer 3 Auto Image Adjust Contrast (+ / -)

11 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 4. Circuit Description The TSUM57AK is total solution graphics processing IC fo

12 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 5. Adjustment Procedure A. Function Test and Alignment Procedure 1. All Modes R

13 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 8. 50 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 50% White (

14 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 15. Function Test Display pattern Item Pattern Description Remark1 Gray_Scal

15 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Fig

16 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 BIOS update procedure Mstar ISP Tool User Manual Setp1: Take the cable of P

i ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Copyright Copyright © 2006 by ViewSonic Corporation. All rights reserved. No p

17 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Step 3 : Press ”connect” into ISP mode，display the model of Flash，The dialog of

18 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Step 5 : Press ”Auto” into below figure that display the value of BIOS Checksum

19 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Step 7： When select ”ReConnect” and press “Run” then repeat to connect the mode

Monitor Assembly and Disassembly 1 Separate Stand Assy 1.1 Remove Seat Assy 1.2 Separate Stand Assy Step 1 : Press St

2 Separate Rear Cover (Rear Case Assy) Separate Bezel hooks to take Bezel and Rear Cover apart. Step 2 :

3 Remove Power Board and AD Board 3.1 Remove Metal Cover Step 1 : Remove FFC from OSD Board. Step 2 : Loose and

3.2 Remove Power Board and AD Board Step 6 : Loose and remove 4 screws. Step 7 : Loose and remove 2 screws. St

Step7 : Completed. Step 2 : Remove Lips Board Step 3 : Remove 2 pieces of FFCs. Step 4 : Remove the FFC. S

4 Change New AD Board and Power Board Step 1 : Place new AD Board. And fasten 4 fixed screws. Step 3 : Insert

5 Remove OSD Board Step 1 : Separate both Audio Cable. Step 2 : Take OSD Board apart. Step 3: Completed. Step 6 : Fasten 4

ii ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 TABLE OF CONTENTS 1. Precautions and Safety Notices 12. Specification 3

6 Change New OSD Board 7 Add Cover to AD PCB Heatsink Step 1 : Place New OSD Board. Step 2 : Insert Audio cable to connectors of

Step 4 : Fasten 4 fixed screws. Step 5 : Insert 2 pieces of Backlight wires. Step 6 : Insert 2 pieces of Backlight. wires. Step 7

8 Rear Cover Assy Assembly Step 10 : Completed. Step 9 : Insert FFC. Step 1 : Place Rear Cover Step 2 : Fasten 2 screws St

9 Stand Assy Assembly Step 1: Place Seat Assy Step 2 : Fasten 4 screws Step 3: Join Seat Assy 30 ViewSonic Corporation Confidenti

31 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packin

32 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 6. Troubleshooting Flow Chart Defect Mode Failure Analysis Repair Testing

Defect Mode Failure Analysis Repair Testing Check PCBAPower on Display Abnormal Flicker Next StepTEST NG

Failure Analysis Repair Testing Gray Scale Display Abnormal R.G.B Display Abnormal No signal Display Whit

Defect Mode Failure Analysis Repair Testing Horizontal Line Defect Vertical Weak Line Peculiar Smell Check PCB

Defect Mode Failure Analysis Repair Testing LED Off No Power LED Dark LED Abnormal LED Flicker Power ON/OFF Ab

1 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 1. Precautions and Safety Notices 1.1. Appropriate Operation (1) Turn off the

Defect Mode Failure Analysis Repair Testing Abnormal BIOS &OSD Check PCB Check Wire AD/B Change CNT/B Change OSD

Defect Mode Failure Analysis Repair Testing Display Shut Down Check PCBACheck PanelDisplay Flicker ((tapping

Trouble Shooting Analysis Check the information in this section to see if the problems can be solved before requesting repair. Note：The consumers are

40 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 7. Recommended Spare Parts List ViewSonic Model Number: VS10866Serial No. Pr

ViewSonic Model Number: VS10866Rev: 1aSerial No. Prefix: QCBItem ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty1 HW-000005534

ModelTitleDate Rev:ViewSonic CorporationExploded chart8. Exploded Diagram and Exploded Parts List 42 ViewSonic Corporation Confidential - Do Not Cop

ModelTitleDate Rev:ViewSonic CorporationPacking Exploded chart 43 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Rev: 1aItem ViewSo

44 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 9. Block Diagram OSD Key Pad / Audio Out D-sub Analog Video Speaker AC

V18CRIGHTCLK+AUTOCLK-PANEL_ON/OFFV33CINV_ON/OFFV5A_ESDINV_ON/OFFBSTHSTBPOLCPVSTVOEGVOFFBG2NBG2PBG1NBG1PBG0NBG0PBB2NBB2PBB1NBB1PBB0NBB0PFR2NFR2PBR2NFR1

ModelTitleDate Rev:ViewSonic CorporationFB0NFB0PFB1NFB1PFB2NFB2PFG0NFG0PFG1NFG1PFG2NFG2PFR0NFR0PFR1NFR1PFR2NFR2PBB0NBB0PBB1NBB1PBB2NBB2PBG0NBG0PBG1NBG

2 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 Correct methods : Incorrect Methods : Only touch the metal-frame of the panel

ModelTitleDate Rev:ViewSonic CorporationV5AVIN_12VINV_ADJINV_ON/OFFVOLVOLMUTEMUTEAUD_DETMUTEAUD_ShutdownAUD_ShutdownINV_ADJINV_ON/OFFV33CV5AV12AVOL_AD

ModelTitleDate Rev:ViewSonic CorporationV33PV33CV33CV5AV33PV5ADVI_5VVGA_5VVCTRLV18CVrefGNDGNDV18CGND(SCALER VCC)(POWER FOR SCALER)(Panel VCC)Heat-Sink

ModelTitleDate Rev:ViewSonic CorporationVSIHSYNCVSYNCVGA_5VVGA_5VHSIRINGINBINVSYNCGNDRGNDGGNDBDDCA_CLKHSYNCDDCA_DATV5A_ESDV5ADDCA_DATDDCA_CLKSOGVGA_5V

ModelTitleDate Rev:ViewSonic CorporationV5A_ESDDDCD_DATDDCD_CLKDVI_5VDDCD_CLKDDCD_DATG+R+B-R-B+G-CLK+V5AV5A_ESDCLK-DDCD_CLKDDCD_DATDVI_5VV5AV5A V5A_ES

ModelTitleDate Rev:ViewSonic CorporationLED_OLED_GLED_OLED_GLED_ORRIGHTTURBOAUTOMENULEFTPOWERLED_GLAUDIOL-AUDIOL+AUDIOR-AUDIOR+V33CV33CV33C V33CV33CGN

ModelTitleDate Rev:ViewSonic CorporationVCCOESTVCPVSTBPOLVCCSTVCPVOEPOLSTBFSTHPANEL_ON/OFFDCDC_ON/OFFVCM_PWMGVOFFPANEL_ON/OFFDCDC_ON/OFFVCM_PWMGVOFFBS

53 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 11. PCB Layout Diagrams

54 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

55 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

56 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

3 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 2. Specification Introduction FEATURES VE1920wm/wmb Size 19” wide Luminance (Ty

57 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

58 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 * Reader’s Response* Dear Readers: Thank you in advance for your feedback on o

4 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 VIDEO INTERFACE Analog Input Connector DB-15 (Analog), refer the appendix A Dig

5 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 detectable by the user. Audible shall defined to be in compliance with ISO 77

6 ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2 19 1024 x 768 @ 75Hz, 60.0kHz Yes Yes 20 1024 x 768 @ 85Hz, 68.67kHz Yes Y