ViewSonic Q20wb-1 VS11674 free download

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Service Manual ViewSonic Q20wb-1 Q20wb-EU Model No. VS11674 20" Color TFT LCD Display (Q20wb-1_Q20wb-EU_SM Rev. 1a Mar. 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 into any 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 for any 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 within this 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 3/15/2007 ECR Number Description of Changes Initial Release Editor Jamie Chang ViewSonic Corporation i Confidential - Do Not Copy Q20wb-1 Q20wb-EU TABLE OF CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. Precautions and Safety Notices Specification Front Panel Function Control Description Circuit Description Adjusting Procedure Trouble Shooting Flow Chart Block Diagrams Schematic Diagrams Exploded Diagram And Spare Parts List 1 4 11 16 23 39 40 41 45 48 10. Recommended Spare Parts List ViewSonic Corporation ii Confidential - Do Not Copy Q20wb-1 Q20wb-EU 1. Precautions and Safety Notices 1. SAFETY PRECAUTIONS This monitor is 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 youL1e unsure of the power supply in you residence, consult your local dealer or Power Company. · 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 checked by a service technician. · Put your monitor only in a lean, cool, dry environment. If it gets we