ViewSonic VA2226w-1 Manuel utilisateur

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

Service Manual

ViewSonic Corporation Confidential - Do Not Copy VA2226w-1

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 SM Editing Date ECR Number Description of Changes Editor

1a 8/16/2007 Initial Release Jamie Chang

ViewSonic Corporation Confidential - Do Not 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

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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 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 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 wet, unplug the power cable

immediately and consult your closed dealer.

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.

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 voltage, 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

When replacing parts or circuit boards, clamp the lead wires around terminals before

soldering.

Keep wires away from high voltage, high temperature components and sharp edges.

Keep wires in their original position so as to reduce interference.

Adjustment of this product please refers to the user’ manual.

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4. Handling and Placing Methods

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2. Specification

Product definition and specification

Product Name ViewSonic VA2226w

Oracle P/N VA2226W

Model Number VS11803

OSD Languages

English, French, German, Italian, Spanish, Finnish,

Japanese, Russian Simplified Chinese, Traditional

Chinese, Korean

TFT LCD Panel and Model #

1 st : INL MT220WW01 V0

2nd : AUO M220EW01 V0

3rd : INL MT220W01 V2

Scalar MST TSUMU58WHJ-LF

Input Signal Analog x1 / Digital x1

Sync Compatibility Separate Sync / Composite Sync / SOG

Adapter Internal Power Board

Power Cable Yes,

refer to APPENDIX B: Power Cable

nalog Cable (1.8 m, black), with PC 2001 and

Hot Plug Detect &DDC

Yes

(Detached cable; refer the Appendix A)

DVI-D Cable(1.8m, black) with PC 2001 For Region code = P/A/J/K/S units only

Audio Cable(1.8m, black) with PC 2001 Yes

MIC Cable(1.8m, black) with PC 2001 No

USB Cable (V2.0) No

ViewSonic CD Wizard

ViewSonic Quick Start Guide

Arabic, English, Finnish, Spanish, German,

Italian, Japanese, Swedish, Polish, Korean,

Portuguese, Russian, Turkish , French, Czech,

Hungarian, Simplified Chinese, Traditional

Chinese

Greek, Dutch.

PerfectSuite CD No

Screen Protector Mylar Yes

Foot Protector plastic No

Energy start sticker Yes

Service Insert For Region code = M units only

Warranty Sticker For Region code = G units only

Warranty Card For Region code = G units only

Carton Sticker For Region code = G units only

PE bag of Carton For Region code = G units only

Manufacture address sticker For Region code = G units only

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2-1 GENERAL specification

Test Resolution & Frequency 1680x1050@ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls Factory Default:

Contrast = 70%, Brightness = 100%

2-2 VIDEO INTERFACE

Input Connector (refer the Appendix A) Analog = DB-15

Digital = DVI-D

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 Pin out Refer to Appendix A; Compliant DDC/CI

Video Signals

Video RGB (Analog)

Separate Sync / Composite Sync / SOG

TMDS (Digital)

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)

Maximum PC Video Signal 950 mV with no damage to monitor

Maximum Mac Video Signal 1250 mV with no damage to monitor

Sync Signals TTL

DDC/CI Compliant with version 1.1

Digital link protection HDCP

Sync Compatibility Separate Sync / Composite Sync / SOG

Video Compatibility

Shall be compatible with all PC type

computers, Macintosh computers, and after

market video cards

Resolution Compatibility Refer to Segment 2-5

Exclusions Not compatible with interlaced video

2-3 USB INTERFACE

No USB interface

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2-4 POWER SUPPLY

Internal Power Supply Part Number RLPR-025

Input Voltage Range 90 to 264 VAC

Input Frequency Range 47 to 63 Hertz

Short Circuit Protection Output can be shorted without damage

Over Current Protection 5A typical at 14.0 VDC

Leakage Current 3.5mA (Max) at 254VAC / 60Hz

Efficiency (at 115VAC Full Load) Typical: 80%

Minimum: 75%

Fuse Internal and not user replaceable

Power Output 38 Watts (typ)

Ripple and Noise Ripple: <3%

Noise: <1%

Max Input AC Current 1.5 Arms @ 90VAC, 0.75 Arms @180VAC

Inrush Current (Cold Start) 50 A (max) @ 115VAC

90 A (max) @ 230VAC

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

defined to be in compliance with ISO 7779 (DIN

EN27779:1991) Noise measurements of machines

acoustics. Power Switch noise shall not be

considered.

Power Saving Operation(Method) VESA DPMS Signaling

Power Consumption

Mode LED Power Consumption

On Blue 38W (typ)

43W (max)

Active off Amber <2W

Off Off <1W

Recovery Time On Mode = N/A, Active Off < 3 sec

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2-5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 24 – 82 kHz

Vertical Refresh Rate 50 – 75 Hz

Maximum Pixel Clock 135 MHz

Sync Polarity Independent of sync polarity

Timing Table

Analog

Item Timing

Separated

Composite

SOG

Digital - TMDS

Remark

1 640 x 350 @ 70 Hz, 31.5 KHz 



DMT

2 640 x 400 @ 60 Hz, 31.5 KHz 



3 640 x 400 @ 70 Hz, 31.5 KHz 



4 640 x 480 @ 50 Hz, 24.7 KHz 

5 640 x 480 @ 60 Hz, 31.5 KHz 



DMT

6 640 x 480 @ 67 Hz, 35 KHz 



For MAC

7 640 x 480 @ 72 Hz, 37.9 KHz 



VESA

8 640 x 480 @ 75 Hz, 37.5 KHz 



VESA

9 720 x 400 @ 70 Hz, 31.5 KHz 



10 720 x 480 @ 60 Hz, 31.5 KHz 



DTV

11 720 x 576 @ 50 Hz, 31.3 KHz  DTV

12 800 x 600 @ 56 Hz, 35.1 KHz 



VESA

13 800 x 600 @ 60 Hz, 37.9 KHz 



VESA

14 800 x 600 @ 72 Hz, 48.1 KHz 



VESA

15 800 x 600 @ 75 Hz, 46.9 KHz 



VESA

16 832 x 624 @ 75 Hz, 49.7 KHz 



MAC

17 1024 x 768 @ 50 Hz, 39.6 KHz 



18 1024 x 768 @ 60 Hz, 48.4 KHz 



VESA

19 1024 x 768 @ 70 Hz, 56.5 KHz 



VESA

20 1024 x 768 @ 75 Hz, 60 KHz 



VESA

21 1152 x 864 @ 75 Hz, 67.5 KHz 



VESA

22 1152 x 870 @ 75 Hz, 68.7 KHz 



For MAC

23 1152 x 900 @ 67 Hz, 62.5 KHz 



For SUN

24 1280 x 720 @ 50 Hz, 37.5 KHz 



DTV

25 1280 x 720 @ 60 Hz, 45 KHz 



DTV

26 1280 x 768 @ 50 Hz, 39.6 KHz 



27 1280 x 768 @ 60 Hz, 47.8 KHz 



CVT

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