Tatota

Service Manual
ViewSonic VA2226w-1
Model No. VS11803 22” Color TFT LCD Display

(VA2226w-1_SM Rev. 1a Aug. 2007)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Copyright Copyright © 2007 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated intoany language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation. Disclaimer ViewSonic makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness forany particular purpose. 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. Trademarks Optiquest is a registered trademark of ViewSonic Corporation. ViewSonic is a registered trademark of ViewSonic Corporation. All other trademarks used withinthis document are the property of their respective owners. Product disposal at end of product life The lamp in this product contains mercury. Please dispose of in accordance with local, state or federal laws.

Revision History
Revision
1a

SM Editing Date
8/16/2007

ECR Number

Description of Changes
Initial Release

Editor
Jamie Chang

ViewSonic Corporation

i Confidential - DoNot Copy

VA2226w-1

TABLE OF CONTENTS
1. Precautions and Safety Notices ......................................................................................... 1 2. Specification ....................................................................................................................... 4 3. Front Panel Function Control Description..................................................................... 27 4. Circuit Description ............................................................................................................. 32 5. Adjusting Procedure .......................................................................................................... 42 6. Trouble Shooting Flow Chart............................................................................................ 53 7. Block Diagrams ................................................................................................................ 61 8. Schematic Diagrams ........................................................................................................ 62 9. PCB Layout Diagrams...................................................................................................... 67 10. Exploded Diagram And Spare Parts List........................................................................ 71 11. Recommended Spare Parts List .................................................................................... 74

ViewSonic Corporation

ii Confidential - Do Not Copy

VA2226w-1

1. Precautions and Safety Notices
1. SAFETY PRECAUTIONS This monitoris manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user. WARNINGS: This monitor should be operated only at the correct power sources indicated on the label on the rear of the monitor. If you’re unsure of the power supply in you residence, consult your local dealer or PowerCompany. Use only the special power adapter that comes with this monitor for power input. Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. Only the qualified technician can repair it. Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric shock to human bodies. Stop using the monitor if the cabinet is damaged. Have it...