ViewSonic VLCDS24349-1 Manuale di Servizio

Model No. VLCDS24349-115” Color TFT LCD DisplayService ManualViewSonic VG500b-1-1ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800)

4.1D-SUB CONNECTOR PINASSIGNMENT Pin No. Symbol Signal Description 1 R RED 0.7vp-p (VIDEO) 2 G GREEN 0.7vp-p (VIDEO) 3 B BLUE 0.7vp-p (

XGA Interface Board (PWB-0535) CON1 : Connect with Control board Pin No. Symbol Function 1 Mute OSD, Audio Mute Function Butt

CON5 : Output to panel Pin No. Symbol Function 1 GND Ground 2 GND Ground 3 CLKH- Sampling Clock for line pixels 4 GND Ground 5 GND Gro

35 VDDA DC+9V for panel D/A reference voltage to make gray scale smooth 36 VDDA DC+9V for panel D/A reference voltage to make gray scale smooth 37

20 VCOM Panel flicker adjustment, Adjustable voltage from DC3.3V ~4V 21 GND Ground 22 GND Ground 23 EB7 Blue data signal of even pixel 24 E

4 DC+5V DC+5V 5 GND Ground 7 BRT Brightness adjustment (Low is max., High is Min.) 8 CCFL_EN Backlight lamps enable (ON/high, OFF/low) 9 GND

Recoding Process : Choose a correct mode name Press [Caps Lock]then key in the bar code number STHTAA00001, And then Press [Enter]. T

5-1 Disassembly of Rear Cover Unscrew nine screws of Base Plate and Remove monitor Remove key control cover from LCD Monitor

3. Unscrew two screws to separate Back cover and Turn front cover separate from back cover Unscrew seven screw to separa

5-2 Disassembly of Key Board PWB-0536, Inverter Board PWB-0538 , Main Board PWB-0535 and DC-AMP &Audio Board PWB-0537 Unscrew eight screw

CopyrightCopyright¤ 2003 by ViewSonic Corporation. All rights reserved. No part of this publication may bereproduced, transmitted, transcribed, stor

Board and LCD Panel Unscrew four screws that secure Main Board and disconnect four connectors to remove Power & Audio Board a

No picture Appear Does the LED light up LED display is amber Is it entering into power saving mode Restart PC signal to ensure H.

The Voltage of I001 #2 is 3.3V Replace I001 No Next Replace Y1, C3, C4 No Replace U5 (MASCOT V2 ) End Check Y1 crys

The Ver. Or Hor. Sync. Does not hold Are the output MV2(CLK,H,V,DE) normal Tighten two flex cables at CON5,CON6

Check if Audio jack properly insert Yes Press mute key again to release YES NO Check if CN701 is connected to U701 properly No

Item Location VG500B ViewSonic P/N ViewSonic P/N1 PWB-05355097616700 B-MB-0201-0787 B-MB-0201-07872 PWB-05385097617100 B-SB-0221-0560 B-SB-0221-05603

Item ViewSonic P/N Ref. P/N Description Location Q'ty1 #N/A 5782510001 CONNECTOR S5B-PH-K CN701,CN830 2C703,C704,C714,C812,C830,C831,C8333 #N/A

Item ViewSonic P/N Ref. P/N Description Location Q'tyBOM LIST PCB- POWER & AUDIO PWB-0537 ASSEMBLY 14 E-D-0403-2072 6615009858 D

Item ViewSonic P/N Ref. P/N Description Location Q'tyBOM LIST PCB- POWER & AUDIO PWB-0537 ASSEMBLY #N/A 5218007891 C47,C77,C130,

Item ViewSonic P/N Ref. P/N Description Location Q'tyBOM LIST PCB- POWER & AUDIO PWB-0537 ASSEMBLY 61 #N/A 5134315009 RESISTOR.T

ViewSonic Corporation Confidential - Do Not Copy VG500bii TABLE OF CONTENTS 2. Specification3. Front Panel Function Control Description4. Circui

Item ViewSonic P/N Ref. P/N Location Q'ty1 C-FP-0301-0896 5733715801 3C06 12 M-CV-0830-2341 5733715900 3C07A 13 C-BC-0302-0437 5733715700 3C01 14

110565123 36 5 678 924345617188201921232425152226272829303374966631325543433 35 4 37 3839404142 8. Exploded Diagram And Spare Parts List 28ViewSon

VG500b Exploded Parts List NO Designation ViewSonic P/N Identification No Qty Remark1 F/C C-FP-0301-0896 5733715801 1 3C062 Bird Logo M-MS-0808-8280

NO Designation ViewSonic P/N Identification No Qty RemarkS-6 SCREW ISO MACHINE FLAT HEAD M4X12L M-SCW-0824-6729 7004261616 4 Hinge rS-6 SCREW ISO MACH

9-1 Inverter Board Circuit The diagram of inverter board circuit is shown in Appendix (PWB-0538). The inverter supplies power for theLCD panel back

RT9164 CG RT34063A RT916A32 CG 12V DC Q009 I3 PPWR0 Q010 VDDA 9.2V C151 5V DC Q006 Q008 PPWRO L014 U008 PPWR1 Q007 D004 Q004 VR001 1K 0.1W I4 C142 D

5V 5V 5V CON4 PC 5V Mute Volume con. SW Select Control Power MP1410 DC-DC Control 5V VEEG VDDG VCOM VDDA R/L MRT MV2 (T-CON) NVRAM AT24WC1Key Audio AN

VIEWSONIC 10. . Schematic Diagrams 34ViewSonic Corporation Confidential - Do Not Copy VG500b

VIEWSONIC 35ViewSonic Corporation Confidential - Do Not Copy VG500b

36ViewSonic Corporation Confidential - Do Not Copy VG500b

This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper use or installation may cause dama

VIEWSONIC 37ViewSonic Corporation Confidential - Do Not Copy VG500b

VIEWSONIC 38ViewSonic Corporation Confidential - Do Not Copy VG500b

VIEWSONIC 39ViewSonic Corporation Confidential - Do Not Copy VG500b

VIEWSONIC 40ViewSonic Corporation Confidential - Do Not Copy VG500b

VIEWSONIC 41ViewSonic Corporation Confidential - Do Not Copy VG500b

27 VIEWSONIC 42ViewSonic Corporation Confidential - Do Not Copy VG500b

11. PCB Layout DiagramsViewSonic Corporation 43 Confidential – Do Not Copy VG500bMain Board

ViewSonic Corporation 44 Confidential – Do Not Copy VG500bMain Board

ViewSonic Corporation 45 Confidential – Do Not Copy VG500bMain Board

ViewSonic Corporation 46 Confidential –Do NotCopy VG500b

2.1PRODUCT SPECIFICATIONS LCD Panel 15.0” TFT Power Management Energy Star compliant VESA DPMS compatible <2W Displayable Resolution XGA, 1024x

ViewSonic Corporation 47 Confidential – Do Not Copy VG500bControl Board

*Readers Response*Dear Readers:Thank you in advance for your feedback on our Service Manual,which allows continuous improvementof our products. We wo

Function Test and Alignment Procedure 15” LCD MONITOR MODEL: VG500b Test Equipment Color Video Signal & Pattern ( XGA 1024 x 768 @

Press “ ” button , the OSD will find “ Factory Init. ” Then “▲” button for 3 seconds , the OSD show “ Memory Recall “ to initi

White Balance Press “▲” “▼ “and “ “ buttons simultaneously for 3 seconds to set White Balance Mode. Please set the screen on 1024x76

OSDLock Press “▲ “ “ buttons simultaneously for 10 seconds, and the OSD will be locked. Repeat the action and the OSD will be unlocke