ViewSonic VP171 User manual

Model No.VLCDS25972-1W

17” Color TFT LCD Display

Service Manual

ViewSonic VP171/s/b-1

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

(VP171/s/b-1_SM_680-Rev. 1a – 05 2003 )

VLCDS25972-2W

VLCDS25972-3W

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.

Revision History

Revision Date Description Of Changes Approval

1a 28/06/03 Initial Release DCN- 3382 F.Fan

ViewSonic Corporation iConfidential – Do Not Copy VP171/s/b-1

Trademarks

ViewSonic is a registered trademark of ViewSonic Corporation.

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

Optiquest is a registered trademark of ViewSonic Corporation.

This manual is prepared for the maintenance service for the VP171/s/b series LCD

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 uide in procurin

replacement parts for this product.

This manual is copyri hted and all ri hts 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 copyies retained by

the purchaser for backup purpose.

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

description, and the Troubleshootin  makes explanations on how to detect errors.

It also includes a flow chart for checkin or correctin 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 ii Confidential – Do Not Copy VP171/s/b-1

TABLE OF CONTENTS

1-1 The Appropriate Operation....................................................1

1-2 Product Highlight................................................................. 2

1- Technical Specification.........................................................3

1-4 Compatible Modes............................................................... 5

2-1 Package Overview................................................................6

2-2 Exploded Overview............................................................... 8

2- Mechanical Spare Parts List..................................................12

-1 Disassembly of Stand unit from Monitor..................................16

-2 Disassembly of Rear Cover.................................................. 19

- Disassembly of Inverter Board, Main Board and Power Board......

......................................................................................... 20

-4 Disassembly of Front Cover Module, LCD Panel,

Switch and Inlet Wires......................................................... 23

4-1 Equipment Needed............................................................... 25

4-2 Main Procedure.................................................................. 25

5-1 Product............................................................................. 29

5-2 Test Equipment.................................................................. 29

5- Hot Key............................................................................. 29

5-4 Test Condition.................................................................... 32

5-5 Test Display Modes & Pattern............................................... 33

5-6 Function Test and Alignment Procedure................................ 36

1 Introduction

2 Mechanical Construction

3 Procedure of Disassembly

4 Troubleshooting Procedure

5Function Test & Alignment Procedure

ViewSonic Corporation iii Confidential – Do Not Copy VP171/s/b-1

6-1 Equipment Needed......................................................... 38

6-2 Setup Procedure............................................................ 39

6- Firmware Upgrade Procedure.......................................... 43

7-1 Equipment Needed.............................................................. 47

7-2 Setup Procedure................................................................. 48

7- DDC Key In Procedure........................................................ 49

8-1 Packing Procedure............................................................ 52

9-1 The Serial Number System Definition.................................. 55

9-2 Function of Boards........................................................... 57

ViewSonic Corporation IVConfidential – Do Not Copy VP171/s/b-1

6Firmware Upgrade Procedure

7DDC Key In Procedure

8Packing For Shipping

9Appendix

10PCB Layout

11Schematic Diagrams

12 Recommended Spare Parts List

13 Electrical Spare Parts List

...................................................................... 64

..................................................... 68

............................... 77

......................................... 82

This manual provides the integral information you need to maintain the LCD Monitor, and

the manual is applied to the mode of 1280*1024 resolution and 1  SXGA TFT LCD Monitor.

There are ten topics in this manual, and you can immediately identify problems through the manual.

This manual is for the technicans and people with an electronicsbackground.

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

is complex or isnt mentioned in the Troubleshooting.

1-1 The Appropriate Operation

- 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.

- Disconnect the power plug from AC outlet if the product is not used for

a long period of time.

-Do not touch the CRT 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 :

1.) Extremely hot cold or humid environment.

2.) Areas susceptible to excessive dust and dirt.

3.) Near any appliance generating a strong magnetic field.

4.) Place in direct sunlight.

ViewSonic Corporation 1Confidential – Do Not Copy VP171/b/s

1. Introduction

1-2 Product Highlight

- Dual Analog and Digital Signal Input

- Active matrix TFT LCD Technology

- 1280*1024 addressable pixels

- 260 cd/m2 brightness (Typ.)

- 30-82kHz Horizontal Frequency

- 50-85Hz Vertical Refresh Rate

- Wide Viewing Angle Technology

- Auto-Adjustment

- Multifunction OSD User Controls

- VESA DPMS Power Saving

- High quality full screen re-scaling capability

ViewSonic Corporation 2Confidential – Do Not Copy VP171/b/s

1-3 Technical Specification

LCD Technology -AU Panel

-PVA Active Matrix

-17 diagonal screen size

-1280*1024 addressable pixels

-0.264mm*0.264mm pixel pitch

-260cd/m2 (Typ.) Brightness

-500:1 (Typ.) Contrast ratio

-L/R=70o/70o U/D=70o/70o Viewing Angle

CR>=10(Typ.)

-tr=12ms (Typ.)/tf=4ms(Typ.) response time

-4 CCFL backlight lamps

-Backlight Life : 40K Hrs(Typ.) 30K Hrs(Min.)

Display Resolution -1280 pixels(H)*1024 lines(V)

Active Display Area -337.9mm(H)*270.3mm(V)

Displayable Color -16.2M Colors

Horizontal Scan -30 to 82kHz

Vertical Refresh -50 to 85 Hz

Max. Pixel Clock -135MHz

Auto-Adjustment -Yes

Re-Scaling -Yes

I/O Connectors -AC power in

-VGA in D-Sub 15 pin *2

-DVI-D Connector *1

ViewSonic Corporation 3Confidential – Do Not Copy VP171/b/s

Power Saving -VESA DPMS Standard

Power Consumption -33Watt (typ.)

Ergonomics Tilt Up 25 degrees minimum

Tilt Down 5 degrees

Swivel Right 45 degrees

Swivel Left 45 degrees

Height Adjust 0~110 cm

Pivot 0~90 degrees (Clockwise)

Environmental -Operating Temperature: 0o ~ 40oC/32o ~ 104oF

-Operating Related Humidity: 20% ~ 90% RH Non-condensing

-Storage Temperature: -20o ~ 60oC/ -4o ~ 140oF

-Storage Related Humidity: 5% ~ 90% RH Non-condensing

Mounting Interface -VESA Flat Panel Monitor Physical Mounting Interface

Power Supply -Internal Power Supply

-Power Dissipation : 33 Watts (typ.)

Dimension (W*H*D) -392.0mm*350.0mm*238.0mm

Weig t -6.5 kgs/14.3 lbs

Agency Approval -FCC-B CE-B VCCI-II BSMI UL CUL TUV TCO99

-PCBC CCC GOST PSB NOM

ViewSonic Corporation 4Confidential – Do Not Copy VP171/b/s

1-4 Compatible Mode

640 x 350 @ 70Hz 31.5kHz

640 x 480 @ 60Hz 31.5kHz

640 x 480 @ 67Hz 35.0kHz

640 x 480 @ 75Hz 37.5kHz

640 x 480 @ 72Hz 37.9kHz

640 x 480 @ 85Hz 43.27kHz

720 x 400 @ 70Hz 31.5kHz

800 x 600 @ 56Hz 35.1kHz

800 x 600 @ 60Hz 37.9kHz

800 x 600 @ 75Hz 46.9kHz

800 x 600 @ 72Hz 48.1kHz

800 x 600 @ 85Hz 53.7kHz

832 x 624 @ 75Hz 49.7kHz

1024 x 768 @ 60Hz 48.4kHz

1024 x 768 @ 70Hz 56.5kHz

1024 x 768 @ 72Hz 58.1kHz

1024 x 768 @ 75Hz 60.0kHz

1024 x 768 @ 85Hz 68.67kHz

1152 x 870 @ 75Hz 68.6kHz

1280 x 1024 @ 60Hz 63.4kHz

1280 x 1024 @ 75Hz 79.97kHz

1280 x 720 @ 60Hz 45kHz

Analog :

640 x 350 @ 70Hz 31.5kHz

640 x 400 @ 70Hz 31.5kHz

640 x 480 @ 60Hz 31.5kHz

640 x 480 @ 75Hz 37.5kHz

640 x 480 @ 72Hz 37.9kHz

640 x 480 @ 85Hz 43.27kHz

720 x 400 @ 70Hz 31.5kHz

800 x 600 @ 56Hz 35.1kHz

800 x 600 @ 60Hz 37.9kHz

800 x 600 @ 75Hz 46.9kHz

800 x 600 @ 72Hz 48.1kHz

800 x 600 @ 85Hz 53.7kHz

1024 x 768 @ 60Hz 48.4kHz

1024 x 768 @ 70Hz 56.5kHz

1024 x 768 @ 72Hz 58.1kHz

1024 x 768 @ 75Hz 60.0kHz

1024 x 768 @ 85Hz 68.67kHz

1152 x 870 @ 75Hz 68.6kHz

1280 x 1024 @ 60Hz 63.4kHz

1280 x 1024 @ 75Hz 79.97khz

1280 x 720 @ 60Hz 45kHz

Digital :

ViewSonic Corporation 5Confidential – Do Not Copy VP171/b/s

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