ViewSonic VS11661 Bedienungsanleitung

ViewSonic VX2255wmb-4

VX2255wmh-4

Model No. VS11661

22” wide Color TFT LCD Display

(VX2255wmb-4_VX2255wmh-4_SM Rev. 1a Sep. 2007)

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

Service Manual

ViewSonic Corporation Confidential - Do Not Copy VX2255wmh-4

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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 9/14/2007 Initial Release Jamie Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices ......................................................................................... 1

2. Specification ....................................................................................................................... 4

3. Front Panel Function Control Description ..................................................................... 23

4. Circuit Description ............................................................................................................. 29

5. Adjusting Procedure..........................................................................................................31

6. Trouble Shooting Flow Chart ............................................................................................ 44

7. Block Diagrams ................................................................................................................ 53

8. Schematic Diagrams ........................................................................................................ 54

9. PCB Layout Diagrams ...................................................................................................... 61

10. Exploded Diagram And Spare Parts List........................................................................ 65

11. Recommended Spare Parts List .................................................................................... 70

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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:

zThis 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.

zUse only the special power adapter that comes with this monitor for power input.

zDo not try to repair the monitor by yourself, as it contains no user-serviceable parts. Only the

qualified technician can repair it.

zDo not remove the monitor cabinet. There are high-voltage parts inside that may cause electric shock

to human bodies.

zStop using the monitor if the cabinet is damaged. Have it checked by a service technician.

zPut your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable

immediately and consult your closed dealer.

zAlways 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.

zDo 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

zWhen replacing parts or circuit boards, clamp the lead wires around terminals before soldering.

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

zKeep wires in their original position so as to reduce interference.

zAdjustment of this product please refers to the user’ manual.

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4. Handing and Placing Methods

Correct Methods: Incorrect Methods:

Only touch the metal frame of the LCD panel or the front

cover of the monitor, Do not touch the surface of the panel.

Surface of the panel is pressed by fingers and that may

cause “Mura”

Take out the monitor with cushions Take out the monitor by grasping the LCD panel, and that

may cause “Mura”.

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Correct Methods: Incorrect Methods:

Place the monitor on a clean and soft foam pad. Place the monitor on foreign objects. That could Scratch the

surface of the panel or cause “Mura”.

The panel is placed facedown on the lap. That may cause

“Mura”

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2. Specification

FEATURES VX2255wmb/wmh-4

Size 22" wide

Luminance (Typ) 300 cd/㎡

Contrast Ratio (Typ) 1000:1

Colors 16.7 M (6 bits + 2 bits FRC)

Response Time 5 ms(on/off) / 3ms(G to G / avg)

Viewing Angle (H/V) 170° / 160 °

TFTLCD PANEL

Recommend resolution 1680x1050@60Hz

Analog Yes (75ohms, 0.7/1.0 Vp-p)

Input Signal Digital Yes

Separate Sync Yes

Composite Sync Yes

Sync Compatibility

Sync on Green Yes

PC Yes

Power Mac Yes

Compatibility

TV Box Yes

Power Voltage AC 100-240V, 50/60Hz Yes

On Mode(Typ) < 45 W (without audio)

Power Consumption Off Mode (Max) ≦1 W

Audio 2W / THD 10% (Max) Yes

WebCam 1.3M / USB2.0 / Windows XP

Cable (type A to type B) Yes

Tilt Yes ( 20 ° and -5 °)

Swivel 360°

Pivot No

Ergonomics

Height Adjust 80mm

OSD Control [ 1 ] [▲] [▼] [ 2 ] // [ ] Yes

Physical (W x H x D) 528(W) x 450(H) x 225(D) mm

Dimension Package (W x H x D) 572(W) x 525(H) x 267(D) mm

Physical (Net Weight) 6.0 Kg / 13.3 lbs

Weight Package (Gross Weight) 8.4 Kg / 18.6 lbs

Temperature (℉/℃) 32℉-104℉/+0℃-+40℃

Operating Condition Humidity (%) 10 % - 90 %

Temperature (℉/℃) -4℉-140℉/-20℃-60℃

Storage Condition Humidity (%) 10 % - 90 %

Regulation

Global: CB, MPR II,WEEE,ROHS

VSA:UL, cUL, FCC-B, TUV-S, NOM, Energy Star

VSE:TUV/ERGO(covers ISO13406-2&MPR II),CE

GOST-R+Hygienic ,SASO , ENERGY, Ukraine

VSI: BSMI, PSB, C-TICK, MIC, VCCI, Green Mark

VSCN:CCC

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Product definition and specification

VSA VSAP VSE VSCN

Region

(M) (A)/(P)/(J)/(U)/(N) (E)/(U)/(EU) (G)

Product Name VX2255wmb/wmh-4

Model Number VS11661

OSD Languages English, French, German, Italian, Spanish, Finnish, Russian,

Korean, Japanese, Traditional Chinese, Simplified Chinese

TFT LCD Panel and Model #

1st INN MT220W W01 V.0

2nd CMO M220Z1-L03

3rd INN MT220W W01 V2

Scalar Mstar, Model # : TSUMO58CWHJ-LF

Input Signal D-Sub / DVI-D

Sync Compatibility Separate / Composite / SOG

Audio 2W

Power Consumption Built-in/ under 50 W (max) / 45 W(typ)

(without audio)

Power Cable Refer to Appendix G

Analog Cable (1.8 m, color : black), with PC

2001 and Hot Plug Detect &DDC YES

DVI-D Cable YES

WebCam

Hardware spec --- 1.3M pixel

OS support --- Windows XP/ Vista

Interface support --- USB 2.0 (type A to type B)

Program support --- Skype / Windows Live Messenger

ViewSonic CD Wizard

ViewSonic Quick Start Guide

WebCam AP Wizard

Arabic, English, Finnish, Spanish, German,

Italian, Japanese, Swedish, Polish, Korean

Portuguese, Russian, French, Greek, Dutch, Turkish,

Simplified Chinese, Traditional Chinese, Czech, Hungarian

Screen Protector Mylar YES

Extrme Label (?ms) NO

DCR sticker (4000:1) / 2pcs YES

Service Insert (new version) YES NO NO NO

Warranty Sticker NO NO NO No

Warranty Card

(China only / new version) NO NO NO YES

Carton Sticker

(China only / new version) NO NO NO YES

PE bag of Carton NO NO NO YES

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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

Analog Input Connector DB-15 (Analog), refer the appendix A

Digital Input Connector DVI-D

Audio input 1 3.5Mini Jack

Headphone output 3.5Mini Jack

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/CI / DDC/2B

Video Signals

1. Video RGB (Analog)

Separate, Composite, and Sync on Green

2. 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/2B Compliant with Revision 1.3

DDC/CI Compliant with Revision 1.1

HDCP HDCP code inside and compatible

Sync Compatibility Separate Sync, Composite Sync, SOG

Video Compatibility Shall be compatible with all PC type computers,

Macintosh computers, and after market video cards

640x350 640x400 640x480 720x400

720x480 800x600 832x624 1024x768

1152x864 1152x870 1280x720 1280x768

1280x960 1280x1024 1360x768 1400x1050

1440x900 1600x1200 1680x1050

Resolution Compatibility

The image vertical size might not be full screen.

But the image vertical position should be at the

center.

Exclusions Not compatible with interlaced video

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2-3 POWER SUPPLY

Internal Power Supply Part Number: 790961400600R

Input Voltage Range AC90~264 (WORLDWIDE)

Input Frequency Range 47 TO 64 HERTZ

Short Circuit Protection OUTPUT CAN BE SHORTED WITHOUT DAMAGE

Over Current Protection 3.3~4.5A TYP. AT 5 VDC

( PROTECT WHEN SHORT CIRCUIT )

Leakage Current 3.5MA (MAX) AT 264VAC / 50HZ

Efficiency 80 % TYPICAL AT 115VAC FULL LOAD

Fuse INTERNAL AND NOT USER REPLACEABLE

Power Dissipation < 45 WAT T S ( T Y P ) (without audio)

Max Input AC Current 1.6A (MAX)

Inrush Current

(Cold Start)

80 A MAX./ 240VAC / 50HZ

(COLD START AT 25℃,FULL LOAD)

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

Color = Black

Separate 3-prong NEMA 5-15P type plug. Length = 1.8m.

Connects to display.

European Type Power Cable

Color = Black

Schuko CEE7-7 type plug.

Length = 1.8m, Connects to display.

CCC Type Power Cable

Color = Black

Separate 3-prong type plug.

Length = 1.8m. Connects to display.

PSE Type Power Cable

Color = Black

Separate 2-prong NEMA 1-15P type plug.

Length = 1.8m. Connects to display.

Power Saving Operation(Method) VESA DPMS Signaling

Power Consumption

On Mode <45W (Typ) / under 50W (Max) (without audio)

Saving Mode < 2 W@230VAC 50Hz

Off Mode < 1 W @230VAC 50Hz

(DC Power Off; Meet to Energy Star Ver4.0 Tier2)

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

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