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Service Manual
ViewSonic VX715-1
Model No. VS10057
17" Color TFT LCD Display
(VX715_SM_829 Rev. 1b Aug. 2004)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
Copyright
Copyright 2004 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.
Revision History
Documents Number
Revision SM Editing Date Description of Changes Editor
DCN Number ECR Number
1a 28/04/04 4 286 Initial Release A. Lu
1b 04/08/04 4646 ECR Change to 2nd Source Panel (Hydis Panel + MST Scalar) A. Lu
ViewSonic Corporation Confidential - Do Not Copy VX715
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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 2
3. Front Panel Function Control Description 11
4. Circuit Description 18
5. Adjusting Procedure 21
6. Trouble Shooting Flow Chart 30
7. Recommended Spare Parts List 31
8. Exploded Diagram And Spare Parts List 42
9. Block Diagram 44
10. Schematic Diagrams 45
11. PCB Layout Diagrams 52
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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
use or installation may cause damage to the monitor as well as the user. Carefully go over the following
WARNINGS before installing and keep this guide handy.
WARNINGS
. This monitor should be operated only at the correct power sources indicated on the label on the rear end of the
monitor. If you're unsure of the power supply in your residence, consult you local dealer or power company.
Do not try to repair the monitor your self as it contains no user-serviceable parts. This monitor should only be
repaired by a qualified technician.
. Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric shock to human
bodies, even when the power cord is unplugged.
. Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.
. Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable immediately and
consult your service technician.
. Always unplug the monitor before cleaning it .Clean the cabinet with a clean, dry cloth. Apply non-ammonia
based cleaner onto the cloth, not directly onto the glass screen.
. Keep the monitor away from magnetic objects, motors, TV sets, and transformer.
. Do not place heavy objects on the monitor or power cord.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety visual inspections and the protection
afforded by them cannot necessarily be obtained by using replacement components rated for higher voltages,
wattage, etc. Before replacing any of these components read the parts list in this manual carefully. The use of
substitute replacement parts which do not have the same safety characteristics as specified in the parts list may
create shock, fire ,or other hazards.
3. SERVICE NOTES
1. When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.
2. When replacing a high wattage resistor(more than 1W of metal oxide film resistor) in circuit board, keep
the resistor about 5mm away from circuit board.
3. Keep wires away from high voltage, high temperature components and sharp edges.
4. Keep wires in their original position so as to reduce interference.
5. Please refer to the user's manual for operating instructions.
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2. Specification
2.1 PRODUCT SPECIFICATIONS
LCD Panel 17.0" TFT
Power Management Energy Star compliant VESA
DPMS compatible
<1 W
Recommend Resolution 1280 x1024@60Hz
Pixel Dimension 0.264(H) x 0.264(V)mm
LCD Display Color 16.2M Colors (6+2FRC bit)
Viewing Angle Horizontal: 150 deg
Vertical: 130 deg
Contrast Ratio 450