ViewSonic VA1703w-1 Manuale utente

ViewSonic VA1703w-1

VA1703wb-1

Model No. VS11534

17” Color TFT LCD Display

(VA1703w-1_VA1703wb-1_SM Rev. 1a Nov. 2006)

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

Service Manual

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

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.

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 11/29/2006 Initial Release Jamie Chang

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 4

3. Front Panel Function Control Description 12

4. Circuit Description 18

5. Adjustment Procedure 19

6. Troubleshooting Flow Chart 37

7. Block Diagram 39

8. Schematic Diagrams 40

9. PCB Layout Diagrams 48

10. Exploded Diagram and Exploded Parts List 52

11. Recommended Spare Parts List 56

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

1. Precautions and Safety Notices

1-1. Appropriate Operation

(1) Turn off the product before cleaning.

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

(3) Use a soft cloth soaked with mild detergent to clean the display housing.

(4) Disconnect the power plug from AC outlet if the product is not used for a long period of

time.

(5) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD

display off.

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

(7) Do not place heavy objects on the LCD display, video cable, or power cord.

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

(9) Do not operate the product under the following conditions:

- Extremely hot, cold or humid environment.

- Areas susceptible to excessive dust and dirt.

- Near any appliance generating a strong magnetic field.

- Place in direct sunlight.

1-2. Caution

No modification of any circuit should be attempted. Service work should only be

performed after you are thoroughly familiar with all of the following safety checks and

servicing guidelines.

1-3. Safety Check

Care should be taken while servicing this LCD display. Because of the high voltage

used in the inverter circuit, the voltage is exposed in such areas as the associated

transformer circuits.

1-4. Power Supply Requirements

The external AC power operating range shall be from 90 to 264Vac

1-5. LCD Module Handling Precautions

1-5-1. Handling Precautions

(1) Since front polarizer is easily damaged, pay attention not to scratch it.

(2) Be sure to turn off power supply when inserting or disconnecting from input

connector.

(3) Wipe off water drop immediately. Long contact with water may cause discoloration or

spots.

(4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.

(5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard

surface.

(6) Since CMOS LSI is used in this module, take care of static electricity and insure

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

human earth when handling.

(7) Do not open nor modify the Module Assembly.

(8) Do not press the reflector sheet at the back of the module to any directions.

(9) In case if a Module has to be put back into the packing container slot after once it was

taken out from the container, do not press the center of the CCFL Reflector edge.

Instead, press at the far ends of the CFL Reflector edge softly. Otherwise the TFT

Module may be damaged.

(10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate nor

tilt the Interface Connector of the TFT Module.

(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for

example),

do not twist nor bend the TFT Module even momentary. At designing the enclosure, it

should be taken into consideration that no bending/twisting forces are applied to the

TFT Module from outside. Otherwise the TFT Module may be damaged.

(12) Cold cathode fluorescent lamp in LCD contains a small amount of mercury. Please

follow local ordinances or regulations for disposal.

(13) Small amount of materials having no flammability grade is used in the LCD module.

The LCD module should be supplied by power complied with requirements of Limited

Power Source, or be applied exemption.

(14) The LCD module is designed so that the CFL in it is supplied by Limited Current

Circuit.

Do not connect the CFL in Hazardous Voltage Circuit.

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

1-5-2. Handling and Placing Methods

Correct Methods: Incorrect Methods:

1.Take out the monitor with cushions 1.Taking out the monitor by grasping the LCD

panel. That may cause ”Mura”

2.Only touch the metal frame of the LCD panel

or the front cover of the monitor. Do not

touch the surface of the polarizer.

2.Surface of the LCD panel is pressed by

fingers and that may cause ”Mura”.

3.Place the monitor on a clean and soft foam

pad.

3.Placing the monitor on foreign objects. That

could scratch the surface of the panel or

cause “Mura”.

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

2. Specification

Product definition and specification

Product Name VA1703w/wb-1

Model Number VS11534

OSD Languages

English, French, German, Italian, Spanish, Finnish,

Japanese, Traditional Chinese, Simplified Chinese,

Russian

TFT LCD Panel and Model # HSD 170MGW1-A

Scalar MST TSUM56AK-1

Input Signal Analog x1

Sync Compatibility Separate Sync

Adapter Internal Power Board

Power Cable Yes,

refer to APPENDIX B: Power Cable

nalog Cable (1.8 m, black), with PC 2001 and Hot Plug

Detect &DDC

Yes

(Detached cable; refer the Appendix A)

DVI-D Cable(1.8m, black) with PC 2001 No

Audio Cable(1.8m, black) with PC 2001 NO

MIC Cable(1.8m, black) with PC 2001 No

USB Cable (V2.0) No

ViewSonic CD Wizard

ViewSonic Quick Start Guide

Arabic, English, Finnish, Spanish, German, Italian,

Japanese, Swedish, Polish, Korean, Portuguese, Russian,

Turkish , French, Czech, Hungarian, Simplified Chinese,

Traditional Chinese

PerfectSuite CD No

Screen Protector Mylar Yes

Foot Protector plastic No

Service Insert For Region code = M units only

Response Time Sticker For Region code = M/E/U/G units only

Energy Star Sticker Yes

Warranty Sticker For Region code = G units only

Warranty Card For Region code = G units only

Warranty Carton Sticker For Region code = G units only

PE bag of Carton For Region code = G units only

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

1 GENERAL specification

Test Resolution & Frequency 1440x900 @ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls Factory Default:

Contrast = 70%, Brightness = 100%

2 VIDEO INTERFACE

Input Connector (refer the Appendix A) Analog = DB-15

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 Pin out Refer to Appendix A; Compliant DDC/2B

Video Signals Video RGB (Analog)

Separate Sync

Video Impedance 75 Ohms (Analog),

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

Sync Compatibility Separate Sync

Video Compatibility Shall be compatible with all PC type computers, Macintosh

computers, and after market video cards

Resolution Compatibility Refer to Segment 4-5

Exclusions Not compatible with interlaced video

3 USB INTERFACE

No USB interface

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

4 POWER SUPPLY

Internal Power Supply Part Number FSP032-2P101 / Delta DAC-12M051

Input Voltage Range 90 to 264 VAC

Input Frequency Range 47 to 63 Hertz

Short Circuit Protection Output can be shorted without damage

Over Current Protection 6.0 A typical at 5 VDC

Leakage Current 0.75mA (Max) at 264VAC / 50Hz

Efficiency (at 115VAC Full Load) 75% TYPICALAT 115VAC FULL LOAD

Fuse Internal and not user replaceable

Power Output 33 Watts (typ)

Ripple and Noise Ripple: <3%

Noise: <1%

Max Input AC Current 1.3 Arms @ 90VAC, 0.65 Arms @264VAC

Inrush Current (Cold Start) 60 A (max) @ 110VAC

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 defined to be in

compliance with ISO 7779 (DIN EN27779:1991) Noise

measurements of machines acoustics. Power Switch noise shall

not be considered.

Power Saving Operation(Method) VESA DPMS Signaling

Power Consumption

Mode LED Power

Consumption

On Green 21W (Typ) / 25W

(max)

Active off Amber <2W

Off Off <1W

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

ViewSonic Corporation Confidential - Do Not Copy VA1703w-1_VA1703wb-1

5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 24 – 70 kHz

Vertical Refresh Rate 50 – 75 Hz

Maximum Pixel Clock 135 MHz

Sync Polarity Independent of sync polarity

Timing Table

Analog

Item Timing

Separated

Composite

SOG

Digital - TMDS

Remark

1 640 x 350 @ 70 Hz, 31.5 KHz 

DMT

2 640 x 400 @ 60 Hz, 31.5 KHz 

3 640 x 400 @ 70 Hz, 31.5 KHz 

4 640 x 480 @ 50 Hz, 24.7 KHz 

5 640 x 480 @ 60 Hz, 31.5 KHz 

DMT

6 640 x 480 @ 67 Hz, 35 KHz 

For MAC

7 640 x 480 @ 72 Hz, 37.9 KHz 

DMT

8 640 x 480 @ 75 Hz, 37.5 KHz 

DMT

9 720 x 400 @ 70 Hz, 31.5 KHz 

10 720 x 480 @ 60 Hz, 31.5 KHz 

DTV

11 720 x 576 @ 50 Hz, 31.3 KHz

DTV

12 800 x 600 @ 56 Hz, 35.1 KHz 

DMT

13 800 x 600 @ 60 Hz, 37.9 KHz 

DMT

14 800 x 600 @ 72 Hz, 48.1 KHz 

DMT

15 800 x 600 @ 75 Hz, 46.9 KHz 

DMT

16 832 x 624 @ 75 Hz, 49.7 KHz 

MAC

17 1024 x 768 @ 50 Hz, 39.6 KHz

18 1024 x 768 @ 60 Hz, 48.4 KHz 

DMT

19 1024 x 768 @ 70 Hz, 56.5 KHz 

DMT

21 1024 x 768 @ 75 Hz, 60 KHz 

DMT

23 1152 x 864 @ 75 Hz, 67.5 KHz 

DMT

24 1152 x 870 @ 75 Hz, 68.7 KHz 

For MAC

25 1152 x 900 @ 67 Hz, 62.5 KHz

For SUN

26 1280 x 720 @ 50 Hz, 37.5 KHz

DTV

27 1280 x 720 @ 60 Hz, 45 KHz 

DTV

28 1280 x 768 @ 50 Hz, 39.6 KHz

29 1280 x 768 @ 60 Hz, 47.8 KHz 

DMT;

30 1280 x 768 @ 75 Hz, 60.3 KHz 

DMT;

31 1280 x 960 @ 50 Hz, 49.4 KHz

32 1280 x 960 @ 60 Hz, 59.7 KHz 

DMT

33 1280 x 960 @ 75 Hz, 75.2 KHz 

34 1280 x 1024 @ 50 Hz, 52.7 KHz

35 1280 x 1024 @ 60 Hz, 64 KHz 

DMT

36 1280 x 1024 @ 75 Hz, 80 KHz 

DMT

37 1440 x 900 @ 60 Hz 55.9 KHz 

DMT

38 1440 x 900 @ 75 HZ 70.6 KHz 

DMT

*1. Tolerance ≧±2KHz (if no overlapping issue)

*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message without

blanking.

*3. The image quality of 85Hz mode might be worse than 75Hz.

*4. The image quality 1280x960@75HZ and 1280x1024@75Hz mode might be worse than other mode.

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