ViewSonic Va703b3 Service Manual
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ViewSonic VA703b-3 VA703m-3 Model No. VS11359 17” Color TFT LCD Display (VA703b-3_VA703m-3_SM Rev. 1C Dec. 2006) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583 Service Manual
i ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 Copyright Copyright © 2007 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 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 trademar k of ViewSonic Corporation. ViewSonic is a registered trademar k of ViewSonic Corporation. All other trademarks used within this document ar e the property of their respective owners. Revision History Revision SM Editing Date ECR Number Description of Changes Editor 1a 8/23/2006 Initial Release Jamie Chang 1b 10/23/2006 VS-E060300 Add 2nd panel CPT CLAA170EA07Q (8ms) Jamie Chang 1c 12/21/2006 VS-E060414 Phase in INL MT170EN01 V9 (5ms) panel as backup (updated RSPL / BOM) Jamie Chang
ii ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 4 3. Front Panel Function Control Description 10 4. Circuit Description 15 5. Adjustment Procedure 24 6. Troubleshooting Flow Chart 37 7. Recommended Spare Parts List 45 8. Exploded Diagram and Exploded Parts List 49 9. Block Diagram 54 10. Schematic Diagrams 55 11. PCB Layout Diagrams 62
1 ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 1. Precautions and Safety Notices 1. SAFETY PRECAUTIONS This monitor is manufactured and tested on a ground principl e 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: z 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 residen ce, consult your local dealer or Power Company. z Use only the special power adapter that comes with this monitor for power input. z Do not try to repair the monitor by yourself, as it contai ns no user-serviceable parts. Only the qualified technician can repair it. z Do not remove the monitor cabinet. There are high-volt age parts inside that may cause electric shock to human bodies. z Stop using the monitor if the cabinet is damaged. Have it checked by a service technician. z Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable immediately and consult your closed dealer. z Always unplug the monitor before cleaning it. Clean the ca binet with a clean, dry cloth. Apply non-ammonia based cleaner onto the cloth, not di rectly onto the glass screen. z Do not place heavy objects on the monitor or power cord. 2. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis ha ve special safety visual inspections and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Before replacing any of these components read the part s list in this manual carefully. The use of substitute replacement parts, which do not have the same safety charac teristics as specified in the parts list, may create shock, fire, or other hazards. 3. SERVICE NOTES z When replacing parts or circuit boards, clamp the lead wires around terminals before soldering. z Keep wires away from high voltage, high temperature components and sharp edges. z Keep wires in their original position so as to reduce interference. z Adjustment of this product pl ease refers to the user’ manual.
2 ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 4. Handling and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal of th e LCD panel or the front cover of he monitor. Do not touch the surface of the polarizer. Surface of the LCD panel is pressed by fingers and that may cause Mura. Take out the monitor with cushions. Taking out the monitor by grasping the LCD panel. That may cause Mura.
3 ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 Correct Methods: Incorrect Methods: Place the monitor on a clean and soft foam pad. Placing the monitor on fo reign objects, That could scratch the surface of the panel or cause Mura. The panel is placed facedown on the lap. That may cause Mura.
4 ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 2. Specification PRODUCT DEFINITION AND SPECIFICATION Product Name VA703b-3 / VA703m-3 Model Number VS11359 Region M model for America E model for Europe G model for China P model for Asia A model for Australia S model for Singapore K model for Korea U model for UK OSD Languages English, French, German, Italian, Spanish, Finnish, Japanese, Traditional Chinese, Simplified Chinese TFT LCD Panel and Model # INN, Model # :MT170EN01 V7 TFT LCD Panel and Model # CPT Model # :CLAA170EA07Q TFT LCD Panel and Model # INN, Model # :MT170EN01 V9 Scalar MST TSUM16AL Input Signal Analog Sync Compatibility Separate Audio 1 W @ < 8 % distortion ( for VA703m-3 only ) Adapter No Power Cable Refer to Appendix D Analog Cable (1.8 m, color : black), with PC 2001 and Hot Plug Detect &DDC Yes Audio Cable (1.8m, Color: black) with PC 2001 Yes ( for VA703m-3 only ) ViewSonic CD Wizard ViewSonic Quick Start Guide Arabic, English, Finnish, Spanish, German, Italian, Swedish, Polish, Korean, Portuguese, Russian, French, Simplified Chinese, Traditional Chinese, Hungary, Czech, Turkish Screen Protector Mylar Yes Hi Pot label Yes QA pass label Yes Hg Warnning label Yes Warranty Sticker For G model only Warranty Card For G model only Carton Sticker For G model only PE bag of Carton For G model only
ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 4 1 GENERAL specification Test Resolution & Frequency 1280 x 1024 @ 60Hz Test Image Size Full Size Contrast and Brightness Controls Factory Default: Contrast = 70%, Brightness = 100% 2 VIDEO INTERFACE Analog Input Connector DB-15 (Analog), refer the appendix A Default Input Connector Defaults to the first detected input Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes Video Cable Connector DB-15 Pin out Compliant DDC 1/2B Video Signals 1. Video RGB (Analog), Separate Video Impedance 75 Ohms (Analog) Maximum PC Video Signal 950 mV with no damage to monitor Maximum Mac Video Signal 1250 mV with no damage to monitor Sync Signals LVDS DDC 1/2B Compliant with Revision 1.3 Sync Compatibility Separate Sync Video Compatibility Shall be compatible with all PC type computers, Macintosh computers, and after market video cards Resolution Compatibility 640 x 350, 640 x 480, 720 x 400 (640 x 400), 800 x 600, 832 x 624, 1024 x 768, 1152 x 864, 1280 x 1024 Exclusions Not compatible with interlaced video 3 POWER SUPPLY Internal Power Supply Part Number: ILPI-020 Input Voltage Range 90 TO 264 VAC Input Frequency Range 47.5 TO 63 HERTZ Short Circuit Protection Output can be shorted without damage Over Current Protection 5 A typical at 14 VDC Leakage Current 3.5 mA (Max) at 254VAC / 60Hz Efficiency 80 % typical at 115VAC Full Load Fuse Internal and not user replaceable Power Dissipation 35 Watts (max) Max Input AC Current 1.2 Arms @ 100VAC, 0.6 Arms @240VAC Inrush Current (Cold Start) 40 A @ 120 VAC, 60 A(max) @ 220 VAC Power Supply Cold Start Shall start and function properly when under full load, with all combinations of input voltage, input frequency, and operating temperature Power Supply Transient Immunity Shall be able to withstand an ANSI/IEEE C62.41- 1980 6000V 200 ampere ring wave transient test with no damage Power Supply Line Surge Immunity Shall be able to withstand 1.5 times nominal line voltage for one cycle with no damage Power Supply Missing Cycle Immunity Shall be able to function properly, without reset or visible screen artifacts, when ½ cycle of AC power is randomly missing at nominal input Power Supply Acoustics The power supply shall not produce audible noise that would be detectable by the user. Audible shall define to be in compliance with ISO 7779 (DIN EN27779:1991) Noise measurements of machines acoustics. Power Switch noise shall not be considered US Type Power Cable Length = 1.8m. Connects to AC/DC Power Color = Black Power Saving Operation(Method) VESA DPMS Signaling Power Consumption ON Mode < 35 W (max) POWER SAVING < 2W ,OFF < 1W Recovery Time On Mode = N/A, Active Off < 3 sec
6 ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 5 ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency 30 – 82 KHZ Vertical Refresh Rate 50 – 85 HZ. Maximum Pixel Clock 135 MHz Sync Polarity Independent of sync polarity. Timing Table Item Timing Analog 1 640 x 350 @ 70Hz, 31.5kHz Yes 2 640 x 400 @ 70Hz Yes 3 640 x 480 @ 50Hz Yes 4 640 x 480 @ 60Hz, 31.5kHz Yes 5 640 x 480 @ 67Hz, 35.0kHz Yes 6 640 x 480 @ 72Hz, 37.9kHz Yes 7 640 x 480 @ 75Hz, 37.5kHz Yes 8 640 x 480 @ 85Hz, 43.27kHz Yes*3 9 720 x 400 @ 70Hz, 31.5kHz Yes 10 800 x 600 @ 56Hz, 35.1kHz Yes 11 800 x 600 @ 60Hz, 37.9kHz Yes 12 800 x 600 @ 72Hz, 48.1kHz Yes 13 800 x 600 @ 75Hz, 46.9kHz Yes 14 800 x 600 @ 85Hz, 53.7kHz Yes*3 15 832 x 624 @ 75Hz, 49.7kHz Yes 16 1024 x 768 @ 60Hz, 48.4kHz Yes 17 1024 x 768 @ 70Hz, 56.5kHz Yes 18 1024 x 768 @ 72Hz, 58.1kHz Yes 19 1024 x 768 @ 75Hz, 60.0kHz Yes 20 1024 x 768 @ 85Hz Yes*3 21 1152 x 864 @ 75Hz Yes 22 1152 x 870 @ 75Hz Yes 23 1280 x 960 @ 60Hz Yes 24 1280 x 960 @75Hz Yes 25 1280 x 1024 @ 60Hz Yes 26 1280 x 1024 @ 75Hz Yes *1. Tolerance ≧ ± 2kHz. *2. Any timing not in the list, it should display as nor mal or show on “OUT OF RANGE” OSD message without blanking. *3. The image quality of 85Hz mode might be worse than 75Hz.
7 ViewSonic Corporation Confidential - Do Not Copy VA703b-3_VA703m-3 6 FRONT PANEL CONTROLS AND INDICATORS Front Panel Hardware Controls Power Switch (Front Head) Power Control, soft Power Switch. Power LED (Front Head) Green – ON Orange – Active Off Dark = Soft Power Switch OFF Front Panel Controls (Head) [ 1 ] [ 2 ] [ ] [ ▲ ] [▼ ] [ 1 ] BUTTON 1 [ 2 ] Button 2 [ ] Power [ ▲ ] UP ARROW BUTTON [ ▼ ] DOWN ARROW BUTTON Note: Power Button, Button 1 and Button 2 must be one-shot logic operation. (i.e. there should be no cycling) Reaction Time OSD must fully appear within 0.5s after pushing Button 1 Short Cuts Function from the button(s) [1] Main Menu [2] Auto Image Adjust [] Power Control, soft Power Switch [▼ ] or [ ▲] To immediately activate Contrast menu. It should be change to Brightness OSD by push button [2] [ ▼ ]+ [▲ ] Recall both of Contrast and Brightness to default [1] + [2] Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode [1] + [▼ ] + [▲] White Balance. (Not shown on user’s guide) [1] + [▼ ] Power Lock [1] + [▲] OSD Lock [▼ ] + [▲ ]+ [] Enter Factory Mode Remark : All the short cuts function are only available while OSD off Main Menu Controls Auto Image Adjust Contrast/Brightness* 1 Audio Adjust ( for VA703m-3 only ) Vo l u m e *3, Mute*3 Color Adjust SRGB, 9300K, 6500K(default), 5400, User Color [R, G, B] Information [H Frequency, V Frequency, Pixel Clock, Resolution, Model Number, Serial Number, “www.ViewSonic.com ” ] Manual Image Adjust [H. Size, H./V. Position, Fine Tune, Sharpness*2 Setup Menu Language [English, French, German, Italian, Spanish, Finnish, Simplified Chinese Traditional Chinese, Japanese], Resolution Notice, OSD Position* 1, OSD Timeout, OSD Background Memory Recall *1 These functions can be recalled to default by [ ▼]+ [ ▲] *2 These functions are not available under Native Resolution Mode *3 These functions setting can be recalled to default by [ ▼]+[▲ ] under audio mode [Remark] Please refer to the detail in the Appendix C