ViewSonic VG700B User manual

Service Manual
Model No. VLCDS23719-3W
17” Color TFT LCD Display
ViewSonic VG700b
ViewSonic381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
(VG700b-1_SM_604 - Rev. 1a – Oct 2002)

Copyright
Copyright
¤
2002 by ViewSonic Corporation. All rights reserved. No part of this publication 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
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
ViewSonic Corporation ii Confidential – Do Not Copy VG700b

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.
Preface
ViewSonic Corporation iii Confidential – Do Not Copy VG700b

Table of Contents
Chapter 1 Introduction 1-1
1-1 The Appropriate Operation 1-1
1-2 Product ighlight 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
ViewSonic Corporation vConfidential – Do Not Copy VG700b

Chapter 6 Function Test and Alignment Procedure 6-1
6-1 Product and Test Equipment 6-1
6-2 ot 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 ardware 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 ardware Setup Procedure 8-2
8-3 DDC Keyin Procedure 8-2
Chapter 9 Panel Specification 9-1
9-1 LCD Panel [Model#M170EN04]
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
Chapter
3
Complete parts list
PCB Layout
1
1
2Schematic Diagrams
4
Chapter112-1~12-
13-1~13-
14-1~14-5
ViewSonic Corporation vi Confidential – Do Not Copy VG700b
9-1
7
3

VG700b Series Service Manual
1-1
VG700b series
Chapter 1 Introduction
1-1 The Appropriate Operation
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.
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.
ViewSonic Corporation Confidential – Do Not Copy VG700b
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VG700b Series Service Manual
1-2
VG700b series
1-2 Product Highlight
Analog signal input
Active matrix TFT LCD technology
1280 1024 addressable pixels, 60Hz
30-82kHz Horizontal Frequency
50-75Hz Vertical Refresh Rate
Auto Image Adjustment
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
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)
ViewSonic Corporation Confidential – Do Not Copy VG700b
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2 0 cd/m2 (max),brightness,
8250 cd/m2(typ),
2 0 cd/m2(min)
0
40:1 (max) contrast ratio,
5
400:1(typ),
250:1(min)

VG700b Series Service Manual
1-3
VG700b series
II.) Power Supply
Input Voltage Range: 90 to 265 VAC
Input Frequency Range: 47 to 63 Hz
Output V[email protected] Load: 12V DC +/- 5%
Over Current Protection 4A Typical at 12VDC
Power Dissipation 40 Watts(Max.)
III.) Audio
Line Input Connection 3.5mm Stereo Jack
Line Input Signal 1.0Vrms
Maximum Power Output 3W@ <8% Distortion
IV.) y Preset Modes
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)
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)
VESA 1024 768@60Hz (65MHz)
VESA 1024 768@70Hz (75.000MHz)
VESA 1024 768@72Hz (78.000MHz)
MAC 1024 768@75Hz (80.000MHz)
ViewSonic Corporation Confidential – Do Not Copy VG700b
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VG700b Series Service Manual
1-4
VG700b series
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
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
ViewSonic Corporation Confidential – Do Not Copy VG700b
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VG700b Series Service Manual
2-1
VG700b series
Chapter 2 Mechanical Construction
2- Package Overview
ViewSonic Corporation Confidential – Do Not Copy VG700b

2-2
2- . Replacement Parts List
ViewSonic Corporation Confidential – Do Not Copy VG700b
ITEM VIEWSONIC P/N P/N DESCRIPTION
1 DC.58302.001 VG700 LCD DISPLAY;
"VIEWSONIC",AU-M170EN05,USA
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
5 M-MS-0808-8141 51.00081.002 PE BAG LDPE 540*750*0.04t
W/HOLE
6 A-AD-0114-0149 47.58301.001 ADAPTER IN:100-240V
OUT:12V/3.33A;LSE
7 A-AU-0120-0032 42.59903.001 CABLE AUDIO 1.8M LM/BK/LM
VX2000
8 A-VC-0101-0266 42.56908.001 CABLE VGA 15P 1800mm 2 CORE
PV870C
9 A-CD-VG750 36.58302.002 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 CABLE POWER CORD 1.8M 0.1M
UNSHIELD
(
NA
)
11-2 A-PC-0106-0190 42.50116.002 CABLE POWER CORD 1830mm
(
JPB
)
BLACK
11-3 A-PC-0106-0187 42.50126.001 CABLE POWER CORD 1.8M 0.1M
(
CHINA
)
12-1 M-MS-0808-8353 36.58307.001 WARRANTY CARD S. CHINESE
VIEWSONIC
12-2 M-MS-0808-8409 36.58303.001 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 WARRANTY STICKER JAPAN
VIEWSONIC
15 M-MS-0808-8410 36.58305.001 ENVELOPE FOR WARRANTY
CARD JAPAN VIEWSONIC
16-1 M-MS-0808-8411 36.58306.001 SHIPPING BAG FOR WARRANTY
KIT JAPAN VIEWSONIC
16-2 M-LB-0813-0739 36.58309.001 SHIPPING WARRANTY STICKER
S. CHINESE VIEWSONIC

VG700b Series Service Manual
2-3
VG700b series
2-2 Exploded Overview
ViewSonic Corporation Confidential – Do Not Copy VG700b

2-4
2-2. Replacement Parts List
ViewSonic Corporation Confidential – Do Not Copy VG700b
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

VG700b Series Service Manual
3-1
VG700b series
Chapter 3 Procedure of Disassembly
3-1 Disassembly of Stand nit and Main Body
1. Lay VG700b Monitor face down to take off Rear Arm and Hin e Cap.
2. Unscrew the four screws to remove the Stand and Main Unit.
1
Rear Arm
Hin e Cap
3. Unscrew the four screws to remove the Hin e Tilt and Base Unit.
4. Unscrew the four screws on Hin e Tilt unit to remove the Front Arm and Hin e Tilt.
5. Unscrew the four screws on the Base Unit to the Base Cover and Base Plate.
Hin e Tilt Unit
Stand Unit 4
Main Unit 2
1
3
Base Cover
Base Plate
5
ViewSonic Corporation Confidential – Do Not Copy VG700b
remove

VG700b Series Service Manual
3-2
VG700b series
3-2 Disassembly of Control Board, Cosmetic Cap and Front Cover
1. First turn over the monitor, and press the two sides from up to down
to remove the Cosmetic Cap.
2. Unplu the Control Wire and unscrew the three screws to remove
the Control Board.
3. Unscrew the two screws of Front Cover to remove it from Main Unit.
Cosmetic Cap
Control Board
1
Front Cover
Main Unit
2
3
ViewSonic Corporation Confidential – Do Not Copy VG700b

VG700b Series Service Manual
3-3
VG700b series
3-3 Disassembly of LCD Panel and Main Board
1. Unscrew the four screws on the LCD Panel.
2. Unplu all wires on the LCD Panel.
3. Remove the LCD Panel.
4. Unscrew the two hex screws and turn over the monitor first; then
unscrew the four screws and unplu all wires on Main Board to remove it.
5. Unscrew the two screws and unplu the wires of Inverter Board to remove it.
4
5
5
Inverter Board
Main Board
4
4
32
1
LCD Panel
ViewSonic Corporation Confidential – Do Not Copy VG700b

VG700b Series Service Manual
3-4
VG700b series
3-4 Disassembly of Support Bracket, Speakers and all wires
1
1. Unscrew the ei ht screws on Speakers to remove it.
2. Remove the tape, unscrew the four screws and unplu all wires
from Support Bracket.
Speakers
3. Remove the Lock Bracket Tinplate from Rear Cover.
Lock Bracket
Tinplate
Support Bracket
Wires
2
3
ViewSonic Corporation Confidential – Do Not Copy VG700b

VG700b Series Service Manual
4-1
VG700b series
Chapter 4 Function of Boards
4-1 Main Board
4-1.1 The Location of Connectors
4-1.2 CON1: VGA Connector
Con2
JP4
Con5
JP1
Con1
P1 J1
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ViewSonic Corporation Confidential – Do Not Copy VG700b

VG700b Series Service Manual
4-2
VG700b series
4-1.3 CON2: OSD Key Connector
4-1.4 CON5: Inverter Connector
4-1.5 J1: Phonejack Stereo Sw.Connector
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ViewSonic Corporation Confidential – Do Not Copy VG700b

VG700b Series Service Manual
4-3
VG700b series
4-1.6 JP1 Connector
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ViewSonic Corporation Confidential – Do Not Copy VG700b