ViewSonic Vp9303 Service Manual

 
 
ViewSonic VP930-3  VP930b-3 
Model No. VS10725 
19” Color TFT LCD  Display 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(VP930-3_VP930b-3 _SM Rev. 1a Oct. 2006) 
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583 
Service Manual  

ViewSonic Corporation Confidential - Do Not Copy  VP930-3_VP930b-3 
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Copyright 
Copyright © 2006 by ViewSonic Corporation.    All  rights reserved.    No part of this publication 
may be reproduced, transmitted, tran scribed, stored in a retrieval system, or translated into any 
language or computer language, in  any form or by any means, electronic, mechanical, magnetic, 
optical, chemical, manual or ot herwise, without the prior written permission of ViewSonic 
Corporation. 
 
Disclaimer 
ViewSonic...

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TABLE OF CONTENTS 
 
 
1.  Precautions and Safety Notices    1
2. Specification   4
3.  Front Panel Function Control Description   7
4. Circuit Description  13
5. Adjustment Procedure  20
6.  Troubleshooting Flow Chart  39
7.  Recommended Spare Parts List 43
8. Exploded Diagram and Exploded Parts List  57
9. Block Diagram  62
10. Schematic Diagrams 63
11.  PCB Layout Diagrams 70
 
  

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1. Precautions and Safety Notices 
 
  1. Appropriate Operation  
 
(1)  Turn off the product before cleaning. 
(2)  Use only a dry soft cloth when  cleaning the LCD panel surface. 
(3)  Use a soft cloth soaked with mild detergent to clean the display housing. 
(4)  Disconnect the power plug from AC outlet if the product is not used for a long period of  time. 
(5)  If smoke, abnormal noise, or strange odor is present, immediately...

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(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. 
  5.2.  Handling and Placing Methods  
 
Correct Methods:  Incorrect Methods: 
Only touch the metal frame of the LCD panel 
or the front cover of the monitor. Do not touch 
the surface of the polarizer.  Surface of the LCD panel is pressed by fingers 
and that may...

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Place the monitor on a clean and soft foam pa d. Placing the monitor on foreign objects. That 
could scratch the surface of the panel or cause 
“Mura” 
 
 
 
 
 
 
 
 
 
 
 
 
   
The panel is placed facedown on the lap. That 
may cause  “Mura”  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  

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2. Specification 
 
 1. General Requirements
 
General Specifications 
Test Resolution & Frequency  “1280 x 1024” @ 60Hz 
Test Image Size Full Size 
Contrast and Brightness Controls  Factory Default: 
Contrast = 70%, Brightness = 100% 
 
2. Signal Interface 
Video Interface 
Analog Input Connector  D-Sub1 = DB-15 (Analog) 
D-Sub2 = DB-15 (Analog) 
DVI-D = DVI-I (Digital) 
Default Input Connector  Defaults to the first detected input...

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8  640 x 480  @  75  Hz, 37.5 KHz 　 　 　 　DMT 
9  640 x 480  @  85  Hz, 43.3 KHz 　 　 　 　DMT 
10  640 x 870  @  75  Hz, 68.9 KHz 　 　 　 　MAC 
11  720 x 400  @  70  Hz, 31.5 KHz 　   　 DMT 
12  720 x 480  @  60  Hz, 31.5 KHz 　 　 　 　DMT 
13  720 x 576  @  50  Hz, 31.3 KHz 　 　 　 　DMT” 
14  800 x 600  @  56  Hz, 35.1 KHz 　 　 　 　DMT 
15  800 x 600  @  60  Hz, 37.9 KHz 　 　 　 　DMT 
16  800 x 600  @  72  Hz, 48.1 KHz 　 　 　 　DMT 
17  800 x 600...

 
 Depth  61mm (2.4 inch) 
Monitor Weight  4.2 Kg (9.3 lbs) 
*Refer to Figure 1   
  
Ergonomics  
Tilt Up 
≥ 20º 
Tilt Down  From 0º down to -3º 
Swivel Right  ≥135º 
Swivel Left  ≥135º 
Height Adjust  0  ~  ≥ 135 mm 
Pivot 0~ 90º(clockwise) 
 
Package Specifications 
ViewSonic Packaging Spec  The “Top Level Assembly” shall 
meet the ViewSonic Corporation 
Packaging Spec, VSCPACSPEC003 
ViewSonic Pallet Spec  Refer to ViewS onic Pallet Load Specification REV.1.I 
Ink  The ink shall not rub off after a...

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3. Front Panel Function Control Description 
 
Main Menu
with OSD controls
Front Control Panel
shown below in detail
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.
Also a shortcut to toggle analog and 
digital connection.
Power light
Green...