Viewsonic vg700b-1 Service Manual 1a

Service Manual

ViewSonic VG700b

Model No. VLCDS23719-3W

17” Color TFT LCD Display

ViewSonic

(VG700b-1_SM_604 - Rev. 1a – Oct 2002)



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

Copyright 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

1a 10/23/02 Initial Release DCN-2660 C. Shen

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Preface

This manual is prepared for the maintenance service for the VG700b series Flat

Panel Monitor. Maintenance procedures described in this manual are intended to isolate

faulty parts and replace them in the field. It also aims to serve as a guide in procuring

replacement parts for this product.

This manual is copyrighted and all rights are reserved. This product may not, in

whole or in part be copied, photocopied, translated or reduced to any electronic or

machine readable form without prior written consent except for copies retained by the

purchaser for backup purpose.

This manual includes system overview, major system assembly, components

description, and the Troubleshooting makes explanations on how to detect errors. It

also includes a flow chart for checking or correcting faults.

No Warranty or representation, either expressed or implied, is made with

respect to this documentation, its quality, performance, merchantability or fitness

for particular purpose.

No event will the vendor be liable for direct, indirect, special, incidental or

consequential damages arising out of the user or inability to use this product or

documentation.

Notice:

The information found in this manual is subject to change without prior notice. Any subsequent

changes made to the data herein will be incorporated in future edition.

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VG700b

Table of Contents

Chapter 1 Introduction 1-1

1-1 The Appropriate Operation 1-1

1-2 Product Highlight 1-2

1-3 Technical Specification 1-2

Chapter 2 Mechanical Construction 2-1

2-1 Package Overview 2-1

2-2 Exploded Overview 2-3

Chapter 3 Procedure of Disassembly 3-1

3-1 Disassembly of Stand Unit and Main Body 3-1

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

3-3 Disassembly of LCD Panel and Main Board 3-3

3-4 Disassembly of Support Bracket, Speakers and all wires 3-4

Chapter 4 Function of Boards 4-1

4-1 Main Board 4-1

4-2 Control Board 4-4

4-3 Inverter Board 4-5

Chapter 5 Troubleshooting Procedure 5-1

5-1 Equipment Needed 5-1

5-2 Main Procedure 5-1

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Chapter 6 Function Test and Alignment Procedure 6-1

6-1 Product and Test Equipment 6-1

6-2 Hot Key (Service Function) 6-1

6-3 Test Condition 6-1

6-4 Test Display Modes & Pattern 6-2

6-5 Function Test and Alignment Procedure 6-5

6- 6 Cleaning 6- 7

6-7 Inspection Standard 6-7

Chapter 7 Firmware Upgrade Procedure 7-1

7-1 Equipment Needed 7-1

7-2 Hardware Setup Procedure 7-2

7-3 Firmware Upgrade Procedure 7-2

Chapter 8 EDID Update Procedure 8-1

8-1 Equipment Needed 8-1

8-2 Hardware Setup Procedure 8-2

8- 3 DDC Keyin Procedure 8- 2

Chapter 9 Panel Specification 9-1

9-1 LCD Panel [Model#M170EN04]

9-1

Chapter 10 Packing for Shipping 10-1

10-1 Package 10-1

Chapter 11 Appendix 11-1

11-1 The Serial Number System Definition 11-1

Chapter

2 Schematic Diagrams

PCB Layout

Complete parts list

12-1~12-

13-1~13-

14-1~14-5

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Chapter 1 Introduction

This manual provides an integral technical information you need to maintain the

LCD Monitor. And this manual is applied to the model of 1280*1024 pixels color TFT LCD

Monitor with a 17 flat panel screen.

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.

1-1 The Appropriate Operation

VG700b series

Turn off the Product before cleaning.

VG700b Series Service Manual

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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1-1

VG700b

1-2 Product Highlight

Analog signal input

Active matrix TFT LCD technology

1280*1024 addressable pixels, 60Hz

30-82kHz Horizontal Frequency

VG700b Series Service Manual

50-75Hz Vertical Refresh Rate

Auto Image Adjustment

Ɣ Ɣ

Multifunction OSD user controls

VESA DPMS Power saving

Resolution Compatibility: 640*350, 640*480, 720*400, 800*600,

832*624, 1024*768, 1152*870, 1280*1024

1-3 Technical Specification

I.) AU Panel:(M170EN04)

Active matrix TN TFT color LCD

17 diagonal screen size

1280*1024 addressable pixels

0.264mm * 0.264mm pixel pitch

2 0 cd/m2 (max),brightness,

40:1 (max) contrast ratio,

250 cd/m

400:1(typ),

(typ),

250:1(min)

2 0 cd/m

(min)

VG700b series

1-2

Lamp number : 4 CCFLs edge-light (2 top/2 bottom)

Backlight Life: 50,000 hrs (Typical), 30,000 hrs (Min.)

Active Size 337.92mm(H)*270.34mm(V)

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II.) Power Supply

Input Voltage Range: 90 to 265 VAC

Input Frequency Range: 47 to 63 Hz

Output Voltage@0-3.58A Load: 12V DC +/- 5%

Over Current Protection 4A Typical at 12VDC

Power Dissipation 40 Watts(Max.)

III.) Audio

VG700b series

IV.) y Preset Modes

Line Input Connection 3.5mm Stereo Jack

Line Input Signal 1.0Vrms

Maximum Power Output 3W@ <8% Distortion

VGA 640*350@70Hz (25.176MHz)

VESA 640*480@60Hz (25.175MHz)

MAC 640*480@67Hz (31.500MHz)

VESA 640*480@72Hz (31.50MHz)

VESA 640*480@75Hz (31.50MHz)

VESA 720*400@70Hz (28.320MHz)

VESA 800*600@56Hz (36.00MHz)

VG700b Series Service Manual

VESA 800*6.00@60Hz (40.00MHz)

VESA 800*600@72Hz (50.00MHz)

VESA 800*600@75Hz (49.5MHz)

MAC 832*624@75Hz (57.272MHz)

Ɣ Ɣ

VESA 1024*768@60Hz (65MHz)

VESA 1024*768@70Hz (75.000MHz)

VESA 1024*768@72Hz (78.000MHz)

MAC 1024*768@75Hz (80.000MHz)

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VG700b

VESA 1024*768@75Hz (78.750MHz)

MAC 1152*870@75Hz

VESA 1280*1024@60Hz

VESA 1280*1024@70Hz

VESA 1280*1024@75Hz

V.) Mechanical & Environmental Condition

VG700b Series Service Manual

Width*Height*Depth: 410.0mm*421.4mm*191.2mm

Monitor Weight: 5.2kgs/11.4lbs

Operating Temperature: 00C to +400C

Storage Temperature: -200C to +600C

Operating Relative Humidity: 10% to 95% Non-Condensing

Storage Relative Humidity: 10% to 95% Non-Condensing

VG700b series

1-4

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Chapter 2 Mechanical Construction

2-1 Package Overview

VG700b series

VG700b Series Service Manual

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2-1

VG700b

2-1.1 Replacement Parts List

(NA)

(

)

ITEM VIEWSONIC P/N P/N DESCRIPTION

1 DC.58302.001

2 P-FM-0602-0752 56.58301.001 CUSHIONS R EPS VG700

3 P-FM-0602-0753 56.58302.001 CUSHIONS L EPS VG700

4 P-BX-0601-0748 55.58301.002 CARTON AB VG700B

VG700 LCD DISPLAY; "VIEWSONIC",AU-M170EN05,USA

5 M-MS-0808-8141 51.00081.002

6 A-AD-0114-0149 47.58301.001

7 A-AU-0120-0032 42.59903.001

8 A-VC-0101-0266 42.56908.001

9 A-CD-VG750 36.58302.002

PE BAG LDPE 540*750*0.04t W/HOLE ADAPTER IN:100-240V OUT:12V/3.33A;LSE CABLE AUDIO 1.8M LM/BK/LM VX2000 CABLE VGA 15P 1800mm 2 CORE PV870C USER'S GUIDE MULTILINGUAL+CD+TCO'95 ECO

10 M-LB-0813-0706 35.58203.001 LABEL CARTON 76*76mm

11-1 A-PC-0106-0188 42.57207.001

11-2 A-PC-0106-0190 42.50116.002

11-3 A-PC-0106-0187 42.50126.001

12-1 M-MS-0808-8353 36.58307.001

12-2 M-MS-0808-8409 36.58303.001

CABLE POWER CORD 1.8M 0.1M UNSHIELD CABLE POWER CORD 1830mm

JPB) BLACK

CABLE POWER CORD 1.8M 0.1M

CHINA WARRANTY CARD S. CHINESE VIEWSONIC WARRANTY CARD JAPAN VIEWSONIC

13 M-LB-0813-0736 35.58304.001 LABEL BARCODE 40*14 Viewsonic

14-1 M-LB-0813-0737 36.58308.001 WARRANTY STICKER S. CHINESE

14-2 M-LB-0813-0738 36.58304.001

15 M-MS-0808-8410 36.58305.001

16-1 M-MS-0808-8411 36.58306.001

16-2 M-LB-0813-0739 36.58309.001

2-2

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WARRANTY STICKER JAPAN VIEWSONIC ENVELOPE FOR WARRANTY CARD JAPAN VIEWSONIC SHIPPING BAG FOR WARRANTY KIT JAPAN VIEWSONIC SHIPPING WARRANTY STICKER S. CHINESE VIEWSONIC

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VG700b

2-2 Exploded Overview

VG700b series

VG700b Series Service Manual

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2-3

VG700b

2-2.1 Replacement Parts List

ITEM VIEWSONIC P/N DESCRIPTION P/N

1 SUPPORT BRKT SECC 0.8t VG700(ADT) 61.58301.001

2 B-MB-0201-0671 PCBA MAIN BD VG700 80.58301.001 3-1 B-SB-0221-0448 PCBA INVERTER LI2113 LIEN CHANG 44.58301.001 3-2 B-SB-0221-0447 PCBA INVERTER PLCD2417414 EMAX 44.58302.001

4 M-SCW-0824-0651 SCREW PAN MECH W/SF M3*6 Ni 85.1F123.060

5 M-MS-0808-6287 SCREW HEX I/O #4-40*H5*L7.5 Ni NYLOK 85.005AG.075

6 M-WR-0828-0644 W.A. 30P UL20276 #28 200mm+CORE 42.58302.001

7 M-WR-0828-0632 W.A. 12P UL1571 #28 260mm (MB TO CRTL) 42.58203.001

8 M-WR-0828-0636 W.A. 10/6P UL1007 #1007 #24 100mm VG700(INV 42.58301.001

9 C-BC-0302-0442 REAR COVER ABS HB-VS08 VG700b 51.58302.002

10 LOCK BRKT TINPLATE 0.5t PV880 61.56005.002 11 E-SK-0412-0049 ASSY SPEAKER MODULE MEI SHAN HB34 49.58301.001 12 SCREW M3*7 85.UA123.070 13 M-LCD-0826-0120 TFT LCD 1280*1024 17" ADT L170E3 PANEL 48.56902.001 14 NAMEPLATE ELLIPSE Viewsonic 51.58711.001 15 C-FP-0301-0901 FRONT COVER ABS HB-VS08A;VG700b 51.58301.002 16 M-MS-0808-8297 COSMETIC CAP ABS HB-VS08;VG700b 51.58303.002 17 M-MS-0808-8176 LED LENS ACRYLIC VG500 51.58207.001 18 PL-NB-0707-0172 SELECT KNOB ABS CS-VS07A VG500 51.58206.001 19 B-CB-0206-0135 PCBA CTRL BD VG500 80.58202.001 20 M-LB-0830-0695 BIRD LOGO AL E015-001 Viewsonic 35.58202.001 21 Viewsonic AL-LOGO 35.90305.001 22 M-MS-0808-8145 HINGE TILT SPHC 2.0t VG700/750 61.58302.001 23 M-MS-0808-8146 BASE PLATE SGCC 2.0t VG700/750 61.58303.001 24 M-SCW-0824-0658 SCREW FLAT MECH M4*8 Ni 85.4A124.080 25 M-MS-0808-8300 FRONT ARM ABS HB-VS08 VG700b 51.58312.002 26 M-CV-0830-2343 BASE COVER ABS HB-BS08 VG700b 51.58311.002 27 M-SCW-0824-0660 SCREW FLAT TAP M3*6 Ni 85.YA123.060 28 PL-PD-0714-0064 RUBBER FOOT 25*10*1.2t 52.00003.001 29 M-SCW-0824-0608 SCEW WCH/W MECH M3*10 Ni 85.ZA123.100 30 M-MS-0808-8302 REAR ARM ABS HB-VS08 VG700b 51.58313.002 31 M-MS-0808-8301 HINGE CAP ABS HB-VS08 VG700b 51.58304.002

2-4

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Chapter 3 Procedure of Disassembly

3-1 Disassembly of Stand Unit and Main Body

Hinge Cap

Main Unit

Rear Arm

VG700b series

1. Lay VG700b Monitor face down to take off Rear Arm and Hinge Cap.

VG700b Series Service Manual

2. Unscrew the four screws to remove the Stand and Main Unit.

Stand Unit

Hinge Tilt Unit

Base Cover

Base Plate

3. Unscrew the four screws to remove the Hinge Tilt and Base Unit.

4. Unscrew the four screws on Hinge Tilt unit to remove the Front Arm and Hinge Tilt.

5. Unscrew the four screws on the Base Unit to the Base Cover and Base Plate.

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3-1

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

Control Board

VG700b Series Service Manual

1. First turn over the monitor, and press the two sides from up to down to remove the Cosmetic Cap.

Cosmetic Cap

VG700b series

2. Unplug the Control Wire and unscrew the three screws to remove the Control Board.

Main Unit

3. Unscrew the two screws of Front Cover to remove it from Main Unit.

Front Cover

3-2

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3-3 Disassembly of LCD Panel and Main Board

1. Unscrew the four screws on the LCD Panel.

VG700b series

2. Unplug all wires on the LCD Panel.

3. Remove the LCD Panel.

LCD Panel

VG700b Series Service Manual

Main Board

4. Unscrew the two hex screws and turn over the monitor first; then unscrew the four screws and unplug all wires on Main Board to remove it.

5. Unscrew the two screws and unplug the wires of Inverter Board to remove it.

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Inverter Board

3-3

VG700b

3-4 Disassembly of Support Bracket, Speakers and all wires

Support Bracket

VG700b Series Service Manual

1. Unscrew the eight screws on Speakers to remove it.

2. Remove the tape, unscrew the four screws and unplug all wires from Support Bracket.

Lock Bracket Tinplate

Wires

Speakers

VG700b series

3-4

3. Remove the Lock Bracket Tinplate from Rear Cover.

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Chapter 4 Function of Boards

4-1 Main Board

4-1.1 The Location of Connectors

JP4

Con2

Con5

VG700b series

JP1

VG700b Series Service Manual

Con1

4-1.2 CON1: VGA Connector

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4-1

VG700b

4-1.3 CON2: OSD Key Connector

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VG700b Series Service Manual

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VG700b

4-1.6 JP1 Connector

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