ViewSonic VX2000-1 Manual de usuario

Service Manual

ViewSonic VX2000-1

Model No.VLCDS23723-1W

20.1” Color TFT LCD Display

(VX2000-1_SM_558 -Rev.1a-Oct 2002)

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

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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

ViewSonic is a registered trademark of ViewSonic Corporation.

All other trademarks used within this document are the property of their respective owners.

Revision History

Revision Date Description Of Changes Approval

ViewSonic Corporation i

1a10/29/02

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Initial Reversion DCN-2323 Tom.Sears

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TABLE OF CONTENT

PRECAUTIOS AND NOTICES

Chapter 1 Introduction

1-1 The Appropriate Operation

1-2 Product Highlight

1-3 Technical Specification

Chapter 2 Mechanical Construction

2-1 Package Overview

2-2 Exploded Overview

Chapter 3 Procedure of Disassembly

3-1 Disassembly of Stand Unit and Main Body

3-2 Disassembly of Control Board, Cosmetic Cap and Front Cover

3-3 Disassembly of LCD Panels and Main Board

3-4 Disassembly of Support Bracket and Speakers

Chapter 4 Function of Boards

4-1 Main Board

4-2 Control Board

Chapter 5 Troubleshooting Procedure

5-1 Equipment Needed

5-2 Main Procedure

Chapter 6 Function Test and Alignment Procedure

6-1 Product and Test Equipment

6-2 Hot Key (Service Function)

6-3 Test Condition

6-4 Test Display Modes & Pattern

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6-5 Function Test and Alignment Procedure

6-6 Cleaning

6-7 Inspection Standards

Chapter 7 Firmware Upgrade Procedure

7-1 Equipment Needed

7-2 Setup Procedure

7-3 Firmware Upgrade Procedure

Chapter 8 DDC Key in Procedure

8-1 Equipment Needed

8-2 Setup Procedure

8-3 DDC Key Procedure

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Chapter 9 Panel Specification

9-1 LCD Panel (Model# FLC51UXC8V)

Chapter 10 Schematic Diagram & PCB Layout

10-1 Schematic Diagram

10-2 PCB Layout

Chapter 11 Appendix

11-1 The Serial Number System Definition

11-2 Reader’s Response

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PRECAUTIONS AND NOTICES

Prior to using this manual, please ensure that you have carefully followed all the procedures

outlined in the user manual for this product.

zRead all of these instructions.

zSave these instructions for later use.

zFollow all warnings and instructions marked on the product.

zDo not use this product near water.

zThis display should be installed on a solid horizontal base.

zWhen cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray

with liquid or aerosol cleaners.

zDo not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet

and other parts.

zAdequate ventilation must be maintained to ensure reliable and continued operation and to

protect the display from overheating. Do not block ventilation slots and openings with objects or

install the display in a place where ventilation may be hindered.

zDo not install this display near a motor or transformer where strong magnetism is generated.

Images on the display will become distorted and the color irregular.

zDo not allow metal pieces or objects of any kind fall into the display from ventilation holes.

Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable

operation of the product and to protect it from overheating, those openings mustnot be blocked or

covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other

similar surface. This product should never be placed near or over a radiator or heat register. This

product should not be placed in a built-in installation unless proper ventilation is provided.

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VX2000 Series Service Manual

VX2000 series

Chapter 1 Introduction

1-1 The Appropriate Operation

This manual provides integral technical information you need to maintain the

LCD Monitor. And this manual is applied to the model of 1600*1 00 pixels color TFT

LCD Monitor with a 0.1 flat panel screen. There are ten topics in this manual, and

you can immediately identify problems through this manual.

This manual is for the technicians and people who have the electronic background.

Send the product back to the distributor for repairing and do not attempt to do anything

which is complex or not mentioned in the troubleshooting.

Turn off the Product before cleaning.

Use only a dry soft cloth when cleaning the LCD panel surface.

Use a soft cloth moistured with mild detergent to clean the display housing.

Use only high quality and safety approved AC/DC power Adapter.

Disconnect the Power Plug from AC outlet if the Product is not used for a long

period of time.

Do not touch the LCD panel surface with sharp or hard objects.

Do not use abrasive cleaners, waxes or solvents for your cleaning.

Do not operate the product under the following conditions:

* Extremely hot, cold or humid environment.

* Areas susceptible to excessive dusts and dirt

* Near any applicance generating a strong magnetic field.

* Place in direct sunlight.

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VX2000 Series Service Manual

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1-2 Product Highlight

Active matrix TFT LCD technology

VESA 1600*1 00@60Hz

280 (max), 250 (typ), 200 (min)

Vertical Refresh Rate

Auto Image Adjustment

Multifunction OSD user controls

VESA DPMS Power saving

Resolution Compatibility: 640*350, 640*480, 7 0*400, 800*600,

83 *6 4,10 4*768, 1 80*7 0, 1 80*10 4,

1600*1 00

1-3 Technical Specification

I.) Fujitsu Panel

Active Matrix Type Liquid Crystal Panel

0.1 diagonal screen size

408.0(H)*306.0(V) Active Size

1600*1 00 addressable pixels

0. 55mm*0. 55mm pixel pitch

280 (max), 250 (typ), 200 (min)

Lamp number : 6 CCFLs

Life: 50,000 hrs (min)

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Analog and digital signal inputs

cd/m cd/m cd/m

650:1(max),500:1(typ),350:1(min)

30-82kHz Horizontal Frequency

45-85Hz

II.) Power Supply

Input Voltage Range: 90 to 64 VAC

Input Frequency Range: 47.5 to 63 Hz

Output Voltage@0 ~ 6.66A Load: 1 V DC +/- 5%

Over Current Protection 8.66A typ at 1 .6 VDC

Power Consumption 80 Watts (typ.)

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III.) Audio

Line Input Connection: 3.5mm Stereo Jack

Line Input Signal: 1.3Vrms

Maximum Power Output (Electric): 3W @ <5% distortion

IV.) Look up Table Timing

(Analog)

640*350@70Hz, 31.5kHz 640*480@60Hz, 31.5kHz

640*480@67Hz, 35.0kHz 640*480@75Hz, 37.5kHz

640*480@7 Hz, 37.9kHz 640*480@85Hz, 43. 7kHz

7 0*400@70Hz, 31.5kHz 800*600@56Hz, 35.1kHz

800*600@60Hz, 37.9kHz 800*600@75Hz, 46.9kHz

800*600@7 Hz, 48.1kHz 800*600@85Hz, 53.7kHz

83 *6 4@75Hz, 49.7kHz 10 4*768@60Hz, 48.4kHz

10 4*768@70Hz, 56.5kHz 10 4*768@7 Hz, 58.1kHz

10 4*768@75Hz, 60.0kHz 10 4*768@85Hz, 68.67kHz

1 80* @60Hz, kHz

1 80*10 4@75Hz, 79.97kHz

1600*1 00@60Hz,

(Digital)

640*350@70Hz, 31.5kHz 640*400@60Hz, 31.5kHz

640*480@60Hz, 31.5kHz 640*480@75Hz, 37.5kHz

640*480@7 Hz, 37.9kHz 640*480@85Hz, 43. 7kHz

7 0*400@70Hz, 31.5kHz 800*600@56Hz, 35.1kHz

800*600@60Hz, 37.9kHz 800*600@75Hz, 46.9kHz

800*600@7 Hz, 48.1kHz 800*600@85Hz, 53.7kHz

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1 80*10 4@60Hz, 63.4kHz

10 4*768@60Hz, 48.4kHz 10 4*768@70Hz, 56.5kHz

10 4*768@7 Hz, 58.1kHz 10 4*768@75Hz, 60.0kHz

10 4*768@85Hz, 68.67kHz

1 80*10 4@60Hz, 63.4kHz

1600*1 00@60Hz,

1 80* @60Hz, kHz

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VX2000 Series Service Manual

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V.) Mechanical & Environmental Condition

Width*Height*Depth: 483.0mm*50 .1mm*69.5mm(exclude Stand)

483.0mm*50 .1mm* 10.35mm(full set)

Monitor Weight 8.4kgs/18.5lbs

Operating Temperature: 00C to +400C

Storage Temperature: - 00C to +600C

Operating Relative Humidity: 0%~85% RH Non-Condensing

Storage Relative Humidity: 5%~85% RH Non-Condensing

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Chapter 2 Mechanical Construction

2-1 Package Overview

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