ViewSonic VX2835wm-1, VS11531 Schematic

Service Manual

ViewSonic VX2835wm-1

Model No. VS11531

28” wide Color TFT LCD Display

(VX2835wm-1_SM Rev. 1b Jun.2007)

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

Copyright

Copyright © 2007 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

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.

Product disposal at end of product life

The lamp in this product contains mercury. Pleas e dispose of in accordance with local, state or federal laws.

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 5/21/2007 Initial Release Jamie Chang

1b 6/25/2007 Replaced the photo of Step 2 in Section DDCKey Jamie Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices ......................................................................................... 1

2. Specification ....................................................................................................................... 5

3. Front Panel Function Control Description ..................................................................... 35

4. Circuit Description............................................................................................................. 40

5. Adjusting Procedure .......................................................................................................... 41

6. Trouble Shooting Flow Chart ............................................................................................ 62

7. Block Diagrams ................................................................................................................ 68

8. Schematic Diagrams ........................................................................................................ 69

9. PCB Layout Diagrams ...................................................................................................... 81

10. Exploded Diagram And Spare Parts List........................................................................ 90

11. Recommended Spare Parts List .................................................................................... 92

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1. Precautions and Safety Notices

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.

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.

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.

4. Power Supply Requirements

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

5. LCD Module Handling Precautions

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 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

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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.

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5.2 handling and placing procedure

1. Open the carton box, before you remove anything from the carton box, check all the accessory

listed in the packing list.

Remember the position of the left and right poly foams to avoid any problem when packing them.

2. When removing the LCD monitor, make sure that you are holding from the back side of the LCD

monitor and not the front side of the LCD monitor.

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3. Place the LCD monitor on a flat table and remove the plastic bag.

4. When placing the LCD screen on the table, you need to make sure there are no object underneath

to avoid any damage on the LCD screen.

It is not advisable to wear any jewelry like rings, bracelet or watch to avoid any scratch on the

LCD screen, or casing when doing the service.

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2. Specification

Introduction

FEATURES VX2835wm

Size

Luminance (Typ)

TFTLCD PANEL

st

1

Input Signal

Sync Compatibility

Compatibility

Power Voltage AC 100-240V, 50/60Hz Yes

Contrast Ratio (Typ)

Colors 16.7 M

Response Time 5 ms(on/off) / 3ms (G to G)

Viewing Angle (H/V)

Recommend resolution 1920x1200@60Hz

Analog Yes (75ohms, 0.7/1.0 Vp-p)

Digital Yes

Separate Sync Yes

Composite Sync Yes( No Guarantee image Quality)

Sync on Green Yes( No Guarantee image Quality)

PC Yes

Power Mac Yes

TV Box Yes

27.54 " wide

500 cd/㎡

800:1

160 ° / 160 °

On Mode

Power Consumption

Audio 3W / THD 10% (Max) Yes

Ergonomics

OSD Control [ 1 ] [ 2 ] [ ][▼] [▲] Yes

Operating Condition

Storage Condition

Regulation

( Max. for Energy star)

Off Mode (Max)

Tilt ( 20 ° - -5 °)

Swivel No

Pivot No

Height Adjust No

Temperature (℉/℃)

Humidity (%) 10 % - 90 %

Temperature (℉/℃)

Humidity (%) 10 % - 80 %

Global: CB, TCO06,WEEE,ROHS

VSA:UL, cUL, FCC-B, IRAM, NOM, Energy Star, ICES-003

VSE:,NEMKO/ERGO, CE

GOST-R+Hygienic ,SASO , ENERGY, UkrSEPRO

32℉-104 /℉ +0℃-+40℃

-4℉-140 /℉ -20℃-60℃

< 64.5W

≦1 W

Yes

VSI: BSMI, PSB, C-TICK, EK, VCCI,

VSCN:CCC

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Product definition and specification

Region

VSA VSAP VSE VSCN

(M) (A)/(P)/(J)/(S)/(K) (E)/(U) (G)

Product Name VX2835wm

Model Number VS11531

OSD Languages

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

Japanese, Traditional Chinese, Simplified Chinese

TFT LCD Panel and Model # HSD 280MUW1-A

Scalar Mstar, Model # :MST 6251DA-205LF

Input Signal D-Sub / HDMI / YPbPr / CVBS / S-Video

Sync Compatibility Separate / [Composite / SOG(image quality no

guarantee )]

Audio 3W

Power Consumption Built-in/ under 64.5W (max , Energy Star

Standard@175nits) / 130 W(max @500nits)

Power Cable Refer to Appendix G

Analog Cable (1.8 m, color : black), with PC

YES

2001 and Hot Plug Detect &DDC

HDMI to DVI-D converter(cablex1.8m)

ViewSonic CD Wizard

ViewSonic Quick Start Guide

Screen Protector Mylar

Extrme Label (?ms)

Service Insert (new version)

Warranty Sticker

Warranty Card

Carton Sticker

PE bag of Carton

Energy Star Sticker(Upper Right corner)

Hi-pot label (Back cover)

QC pass label(Back cover)

YES

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

Swedish, Polish, Korean, Portuguese, Russian, French,

Simplified Chinese, Traditional Chinese, Czech, Hungarian,

Greek, Dutch, Turkish

YES

NO NO NO NO

YES NO NO NO

NO NO NO YES

YES YES YES YES

NO NO NO YES

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4-1 GENERAL specification

Test Resolution & Frequency 1920x1200 @ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls

Factory Default:

Contrast = 70%, Brightness = 100%

4-2 VIDEO INTERFACE

Analog Input Connector DB-15 (Analog), refer the appendix A

Digital Input Connector HDMI, 19pin Tape A

Video Input 1 RCA jack (Red, Blue, Green) for YPbPr

Video Input 2 RCA jack (Yellow) for CVBS

Video Input 3 S-Video jack

Audio input 1 3.5Mini Jack for PC Audio and (DVI-D adapter applied)

Audio input 2 RCA jack (White / Red) for YPbPr

Audio input 3

Default Input Connector Defaults to the first detected input

Video Cable Strain Relief

RCA jack (White / Red) for CVBS and S-Video, they will share the same RCA

jack

D-Sub: 12Kg, 5min.

HDMI to DVI : 3Kg, 5min.

Composite(AV): 3Kg, 5min.

Video Cable Connector DB-15 Pin out Compliant DDC / CI

1. Video RGB (Analog)

Video Signals

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)

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/CI Compliant with Revision 1.0

HDCP HDCP code inside and compatible

Sync Compatibility

Video Compatibility

Separate,[ Composite, and Sync on Green (image quality no guarantee )]

2. TMDS (Digital)

(Need RCA to SCART for european market)

Separate Sync, [Composite Sync, SOG

(image quality no guarantee )]

Shall be compatible with all PC type computers, Macintosh computers, and

after market video cards

Video timing support

(CVBS / S-Video)

(HDMI / YPbPr)

Resolution Compatibility 640x350 640x400 640x480 720x400

7

480i / 480p @ 60Hz

576i / 576p @ 50Hz

480i / 480p @ 60Hz 576i / 576p @ 50Hz Video timing support

720p @ 50/60Hz 1080i / 1080p @ 50/60Hz

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720x480 800x600 832x624 1024x768

1152x864 1152x870 1280x720 1280x768

1280x960 1280x1024 1360x768 1400x1050

1440x900 1600x1200 1680x1050 1920x1200

The image vertical size might not be full screen.

But the image vertical position should be at the center.

Exclusions Not compatible with interlaced video

Video input

Audio / Video Action

CVBS S-Video YPbPr D-sub

RCA (white + red)

● ●

X X X X

with CVBS

Audio

input

RCA (white + red)

with YPbPr

X X

●

3.5mm phone jack X X X

Audio in HDMI X X X X X

Video OVERSCAN

Component over scan: 5~8% AV over scan: 5~8% HDMI over scan: No over scan for PC input, 5~8% for video source. PC: No over scan

4-3 POWER SUPPLY

Internal Power Supply Part Number: 71-Y2831200G001

DVI-D via

HDMI

X X X

● ●

X

●

Input Voltage Range AC90~264 (Worldwide)

Input Frequency Range 47 to 64 Hertz

Short Circuit Protection Output can be shorted without damage

3.3~4.5A typ. at 5 VDC

Over Current Protection

( Protect when short circuit )

Leakage Current 3.5mA (Max) at 264VAC / 50Hz

Efficiency 80 % typical at 115VAC Full Load

Fuse Internal and not user replaceable

Power Dissipation < 130 Watts (typ)

Max Input AC Current 1.6A (max)

Inrush Current

(Cold Start)

80 A Max./ 240VAC / 50Hz

(Cold Start at 25℃,Full Load)

Shall start and function properly when under full load, with all combinations of

Power Supply Cold Start

input voltage, input frequency, and operating temperature

Shall be able to withstand an ANSI/IEEE C62.41-1980 6000V 200 ampere ring

Power Supply Transient Immunity

wave transient test with no damage

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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

Power Supply Acoustics

US Type Power Cable

Color = Black

European Type Power Cable

Color = Black

CCC Type Power Cable

Color = Black

PSE Type Power Cable

Color = Black

Power Saving Operation(Method) VESA DPMS Signaling

Shall be able to function properly, without reset or visible screen artifacts, when

½ cycle of AC power is randomly missing at nominal input

The power supply shall not produce audible noise that would be detectable by the

user. Audible shall define to be in compliance with ISO 7779 (DIN

EN27779:1991) Noise measurements of machines acoustics. Power Switch noise

shall not be considered

Separate 3-prong NEMA 5-15P type plug. Length = 1.8m. Connects to display.

Schuko CEE7-7 type plug.

Length = 1.8m, Connects to display.

Separate 3-prong type plug.

Length = 1.8m. Connects to display.

Separate 2-prong NEMA 1-15P type plug.

Length = 1.8m. Connects to display.

On Mode <60 W (Typ) / under 64W (Max for Energy Star)

Max power output :130W(Max. @500nits)

Power Consumption

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

Saving Mode < 2 W@230VAC 50Hz

Off Mode < 1 W @230VAC 50Hz

(DC Power Off; Meet to Energy Star Ver4.0 Tier2)

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4-4 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 24 – 82 kHz

Vertical Refresh Rate 50 – 85* Hz

Maximum Pixel Clock Analog is 205MHz, Digital is 165 MHz

Sync Polarity Independent of sync polarity.

Timing Table

Item

Timing

Analog

Separated

Composite

SOG

Digital - TMDS

CVBS

S-Video

For Composite and SOG, the image

vertical size image will be not full

YPbPr

Remark

1 640 x 350 @ 70 Hz, 32 KHz

2 640 x 350 @ 85 Hz, 38 KHz

3 640 x 400 @ 60 Hz, 32 KHz

 

X X X

screen (Still at the center), And the

OSD will be

640x350/640x400/720x400

(promary= 640x400).

For Composite and SOG, the image

vertical size image will be not full

screen (Still at the center), And the

X X X

OSD will be

640x350/640x400/720x400

(promary= 640x400).

For SOG sync, switch

640x400@60Hz and

X X X

640x480@60Hz by [1]+[2] short cut

key (primary = 640x480@60Hz)

For Composite and SOG, the image

vertical size image will be not full

4 640 x 400 @ 70 Hz, 32 KHz

5 640 x 400 @ 85 Hz, 38 KHz

10

 

X X X

screen (Still at the center), And the

OSD will be

640x350/640x400/720x400

(promary= 640x400).

For Composite and SOG, the image

vertical size image will be not full

screen (Still at the center), And the

OSD will be

640x350/640x400/720x400

(promary= 640x400).

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6 640 x 480 @ 50 Hz, 25 KHz

 

X X X

For SOG sync, switch

7 640 x 480 @ 60 Hz, 32 KHz

8 640 x 480 @ 67 Hz, 35 KHz

9 640 x 480 @ 70 Hz, 35 KHz

10 640 x 480 @ 72 Hz 38 KHz

11 640 x 480 @ 75 Hz, 38 KHz

12 640 x 480 @ 85 Hz, 43 KHz

13 720 x 400 @ 70 Hz, 32 KHz

 

X X X

640x400@60Hz and

640x480@60Hz by [1]+[2] short cut

key (primary = 640x480@60Hz)

Mac Timing

For Composite and SOG, the image

vertical size image will be not full

screen (Still at the center), And the

OSD will be

640x350/640x400/720x400

(promary= 640x400).

For Composite and SOG, the image

vertical size image will be not full

14 720 x 400 @ 85 Hz, 38 KHz

15 720 x 480 @ 60 Hz, 32 KHz

16 800 x 600 @ 60 Hz, 38 KHz

17 800 x 600 @ 70 Hz, 43 KHz

18 800 x 600 @ 72 Hz, 48 KHz

19 800 x 600 @ 75 Hz, 47 KHz

20 800 x 600 @ 85 Hz, 54 KHz

21 832 x 624 @ 75 Hz, 50 KHz

22 1024 x 768 @ 50 Hz, 40 KHz

 

X X X

screen (Still at the center), And the

OSD will be

640x350/640x400/720x400

(promary= 640x400).

For Analog sync, the information

OSD shows 640x480

For Separated and Composite sync,

Switch 1024x768@50Hz and

1280x768@50Hz by [1]+[2] short

cut key (primery =

1024x768@50Hz)

23 1024 x 768 @ 60 Hz, 48 KHz

24 1024 x 768 @ 70 Hz, 57 KHz

25 1024 x 768 @ 72 Hz, 58 KHz

26 1024 x 768 @ 75 Hz, 60 KHz

27 1024 x 768 @ 75 Hz, 60 KHz

11

 

X X X

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28 1024 x 768 @ 85 Hz, 69 KHz

 

X X X

29 1152 x 864 @ 75 Hz, 68 KHz

30 1152 x 870 @ 75 Hz, 69 KHz

31 1280 x 720 @ 50 Hz, 38 KHz

32 1280 x 720 @ 60 Hz, 38 KHz

33 1280 x 768 @ 50 Hz, 40 KHz

34 1280 x 768 @ 60 Hz, 47 KHz

35 1280 x 768 @ 60 Hz, 48 KHz

36 1280 x 768 @ 75 Hz, 60 KHz

37 1280 x 768 @ 85 Hz, 69 KHz

38 1280 x 960 @ 50 Hz, 49 KHz

39 1280 x 960 @ 60 Hz, 60 KHz

40 1280 x 960 @ 75 Hz, 75 KHz

 



 

XX

 

X X X



X X X



X X X

For Separated and Composite sync,

Switch 1024x768@50Hz and

1280x768@50Hz by [1]+[2] short

cut key (primary =

1024x768@50Hz)

41 1280 x 960 @ 85 Hz, 86 KHz

1280 x

42

1024

1280 x

43

1024

1280 x

44

1024

1280 x

45

1024

1280 x

46

1024

47 1360 x 768 @ 60 Hz, 48 KHz

1400 x

48

1050

1400 x

49

1050

@ 50 Hz, 53 KHz

@ 60 Hz, 64 KHz

@ 70 Hz, 75 KHz

@ 75 Hz, 80 KHz

@ 85 Hz, 91 KHz

@ 50 Hz, 54 KHz

@ 60 Hz, 65 KHz

 

X

X X X



For analog sync, Switch

1400x1050@60Hz and

1680x1050@60Hz by [1]+[2] short

cut key (primary =

1400x1050@60Hz)

For Separated and Composite sync,

1400 x

50

1050

12

@ 60 Hz, 65 KHz

 

X



X X X

Switch 1400x1050@60Hz and

1680x1050@60Hz by [1]+[2] short

cut key (primary =

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1400x1050@60Hz)



  



1400 x

51

1050

52 1440 x 900 @ 60 Hz, 56 KHz

53 1440 x 900 @ 60 Hz, 60 KHz

54 1440 x 900 @ 75 Hz, 75 KHz

55 1440 x 900 @ 85 Hz, 85 KHz

1600 x

56

1200

1600 x

57

1200

1680 x

58

1050

@ 75 Hz, 82 KHz

@ 50 Hz, 62 KHz

@ 60 Hz, 75 KHz

@ 60 Hz, 65 KHz

 

X

X X X



For analog sync, Switch

1400x1050@60Hz and

1680x1050@60Hz by [1]+[2] short

cut key (primary =

1400x1050@60Hz)

For Separated and Composite sync,

1680 x

59

1050

1920 x

60

1200

61 480p @ 50 Hz

62 480p @ 60 Hz

63 480i @ 50 Hz

64 480i @ 60 Hz

65 576i @ 50 Hz

66 576i @ 60 Hz

67 576p @ 50 Hz

68 576p @ 60 Hz

69 720p @ 50 Hz

70 720p @ 60 Hz

@ 60 Hz, 65 KHz

@ 60 Hz, 74 KHz

 

X X X

X

 

X X X



X X X

 



   



 



 



X X

Switch 1400x1050@60Hz and

1680x1050@60Hz by [1]+[2] short

cut key (primary =

1400x1050@60Hz)

Reduce Blanking

Unable Test,

Unable Test

71 1080i @ 50 Hz

72 1080i @ 60 Hz

73 1080p @ 50 Hz

74 1080p @ 60 Hz

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X X X



X X

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4-5 FRONT PANEL CONTROLS AND INDICATORS

Front Panel Hardware Controls

Power Switch (Front Head) Power Control, soft Power Switch.

Blue – ON

Power LED (Front Head)

Front Panel Controls (Head)

[ 1 ] [ 2 ] [ ] [▼] [▲]

Reaction Time

Short Cuts Function from the button(s)

[1] Main Menu

[2] Input toggle (D-sub / HDMI / YPbPr / S-Video / CVBS)

[▼] To immediately audio menu.

Orange – Active Off

Dark = Soft Power Switch OFF

[ 1 ] BUTTON 1

[ 2 ] Button 2

[ ] Power

[▼] DOWN ARROW BUTTON

[▲] UP ARROW BUTTON

Note: Power Button, Button 1 and Button 2

must be one-shot logic operation. (i.e. there

should be no cycling)

OSD must fully appear within 0.5s after

pressing Button 1

[▼] +[▲]

Contrast & Brightness page

(Recall both of audio to default under Audio page)

Toggle 720x400 and 640x400 mode when input 720x400

[1] + [2]

or 640x400 mode

[1] + [▼] + [▲]

White Balance. (Not shown on user’s guide)

(Keep pressing 3 sec)

[1] + [▼] Power Lock

[1] + [▲] OSD Lock

[▲]

Essential mode switch

Standard ->Text -> Cinema -> Game -> Portrait -> Scenery -> Vivid

Skin tone switch

[2] + [▲]

Nature -> Reddish -> yellowish

[2] + [▼] DDC/CI ON/Off (ON:DDC/CI ; Off:DDC/2B)

[▼] +[▲] + [ ] Factory Mode

Remark : All the short cuts function are only available while OSD off

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Main Menu Controls

Auto Image Adjust*1

Contrast/Brightness*2*4

Input Select

D-Sub,

AV (CVBS)

S-Video*

YPbPr*5

HDMI

Audio Adjust

Volume*4,

Mute*4

Bass,

Treble,

Balance,

Color Adjust

SRGB,

9300K,

5

,

Manual Image Adjust

Horizontal Size*

H/V. Position*1,

Fine Tune*1,

Sharpness*

Tint,

Color

Opticolor [Standard, Text , Cinema, Game, Portrait, Scenery,

Vivid ],

Opticolor Skin Tone[Nature, reddish ,yellowish],

Aspect radio [1:1 / 4:3 / 16:9 / full screen] ,

PIP [position 1,2,3,4 / Size 1, 2 / Source1,2],

PBP [Source1,2]

Setup Menu

Language [English, French, German, Italian, Spanish, Finnish,

1

,

3 ,

Russian, Japanese, Simplified Chinese, Traditional

Chinese]

7500K,

6500K(default),

5400,

User Color [R, G, B]

Information

H Frequency,

V Frequency,

Resolution,

Pixel Clock,

Video Format

Serial Number,

Model Number,

www.ViewSonic.com

Resolution Notice,

OSD Position,

OSD Timeout,

OSD Background

Sleep [30,45,60,120,off]

Memory Recall

*1 These functions are not available in Digital Mode

2

*

These functions are not available under SRGB Mode, Opticolor On, and Opticolor Skin Tone On

3

*

These functions are not available under Native Resolution Mode

4

*

These functions setting can be recalled to default value under certain page by pressing [▼]+[▲]

5

*

The audio functions should be transfer to RCA type from mini phone jack type when work under

YPbPr mode.

6

*

The audio functions should be transfer to HDMI type from mini phone jack type (or RCA type) when

work under HDMI mode with audio input

[Remark] Please refer to the detail in the Appendix C

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Function descriptions

OSD Lock short cuts function for the buttons

The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)" for 10

seconds.

If the user then tries to access the OSD by pressing any of the buttons "1", "▼", "▲", "2" a

message will appear on the screen for 3 seconds showing "OSD Locked".

The OSD lock will be deactivated by pressing the front panel control buttons "(1), & (▲)"

again for 10 seconds.

Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute”

Note2: Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD

Locked”

Note3: OSD Lock should not lock Power Button and Power Lock function

Power Lock short cuts function for the buttons

The power button lock will be activated by pressing the front panel control buttons "(1), & (▼)"

for 10 seconds.

Locking the power button means that the user won't be able to turn off the LCD while the

power button is locked. If the user presses the power button while it is locked, a message will

appear on the screen for 3 seconds showing "Power Button Locked". It also means that with the

power button locked, the LCD would automatically turn back "On" when power is restored after a

power failure. If the power button is not in the locked mode, then power should return to it's

previous state when power is restored after a power failure.

The power button lock will be deactivated by pressing the front panel control buttons "(1), &

(▼)" again for 10 seconds.

Note 1: Status bar indicating Power Button lock or unlock is in progress and when complete it

will indicate “Power Button Locked”

Note 2: Power should only be lockable in the “On State”

Memory Recall Actions

Memory Recall action on the analog and digital mode as below

1. Set the factory defaults as shown in Section 4-8

2. Clean all the mode setting buffer

3. Execute Auto Image Adjust

Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or

Input Priority

Resolution Notice Actions

1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec

2. The OSD should disappear after 10 sec or by pressing button [1] or [2]

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Resolution Notice function should be disabled when press button [2] under Resolution Notice

OSD

0-Touch™ Function Actions

1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer for

further use

2. It should be reset by Memory Recall function

(Should not reset by power off, power unplug and others)

OSD Auto Save

The OSD shall save new settings when it is turned off by the user or when it times out. There

shall not be a separate save

Input Priority

This function is defined the auto detect priority when the display has several inputs. Please refer

to the detail flow chart as the appendix D

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4-6 AUDIO INTERFACE (SPEAKER SPECIFICATION)

Line input signal 1.0 Vrms @1kHz

Maximum Amp power output (Watt) 3 W (RL=8Ω)

Amp –THD < 10 % THD @1kHz

Speaker Power rating(Ω/Watt) 8Ω/ 3 W

Signal to Noise Ratio 72 dB

Frequency response 300 – 20kHz

SPL. 85 ± 3 dB (at 0.5m)

FO 300 Hz

3.5 mm stereo jacks

Line input connection

Vibration

Screen image

Connector PC99 requirement Audio in Lime Green pantone # 577C

Cable type / length 3.5mm stereo cable / 1.8m length

Audio DPMS

HDMI

RCA 1 (with YPbPr)

RCA 2 (with CVBS / S-Video)

There should be no audible vibration resonance at

volume=100% & any Freq.

There should be no affect on the screen image stability under

any conditions

Speakers stay off when the rest of the monitor is in power saving

Note: There is no guarantee <1 W at power consumption in

Active Off mode, when the Audio Cable is connected

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4-7 TFT LCD PANEL

Panel Source Identify

The panel code “T” for HannStar panel should be shown on the position

1. Lower right side of ID label. (See Figure 2)

2. Lower right side of UPC label . (See Figure 3)

3. The F/W version sticker or silkscreen Main board.

Panel Characteristics:

1st Source Panel

Model number HSD280MUW1-A

Type TN type with RSDS interface

Active Size 27.5” wide; 593.28 (H) x 370.8 (V)

Pixel Arrangement RGB Vertical Stripe

Pixel Pitch 0.309 (H) x 0.309 (H) mm

Glass Treatment Anti Glare (Hard coating 3H)

# of Backlights 14 CCFL w/ Inverter / direct type

Backlight Life 50000Hours (Min) at 6mA

Luminance (5-point) –

Condition:

500 cd/m2 (Typ after 30 minute warm up)

CT = User Color,

400 cd/m2 (Min after 30 minute warm up)

Contrast = Max,

Brightness = Max

Brightness Uniformity ≧75% Entire Area (min)

Contrast Ratio 800:1 (typ), 600:1(min)

Color Depth 16.7 million colors

@ CR>10

Viewing Angle (Horizontal)

Typical: 160

TN type

Minimum: 150

@ CR>10

Viewing Angle (Vertical)

Typical: 160

TN type

Minimum: 150

Typical = 5ms (on/off) / 3ms (G to G)

Response Time

Maxmum = 10 ms (on/off) / 7ms (G to G)

10%-90% @ Ta=25°C

Panel Defects Please see Panel Quality Specifications.

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EDID DATA

VX2835wm-a

Time: 14:26:31

Date: Wed Jan 17, 2007

______________________________________________________________________

VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VX2835wm

______________________________________________________________________

EDID Block 0, Bytes 0-127

128 BYTES OF EDID CODE:

0 1 2 3 4 5 6 7 8 9

________________________________________

0 | 00 FF FF FF FF FF FF 00 5A 63

10 | 1F 0F 01 01 01 01 01 11 01 03

20 | 6E 3B 25 78 2E 9E 71 A6 54 4C

30 | 9F 24 10 51 57 BF EF 80 D1 00

40 | B3 00 A9 40 95 00 90 40 81 80

50 | 81 40 71 4F 28 3C 80 A0 70 B0

60 | 23 40 30 20 36 00 51 73 21 00

70 | 00 1A 00 00 00 FF 00 51 46 47

80 | 30 37 30 31 30 30 30 30 31 0A

90 | 00 00 00 FD 00 32 4C 1E 52 11

100 | 00 0A 20 20 20 20 20 20 00 00

110 | 00 FC 00 56 58 32 38 33 35 77

120 | 6D 0A 20 20 20 20 00 5F

______________________________________________________________________

(08-09) ID Manufacturer Name ________________ = VSC

(11-10) Product ID Code _____________________ = 0F1F

(12-15) Last 5 Digits of Serial Number ______ = Not Used

(16) Week of Manufacture _________________ = 01

(17) Year of Manufacture _________________ = 2007

(10-17) Complete Serial Number ______________ = See Descriptor Block

(18) EDID Version Number _________________ = 1

(19) EDID Revision Number ________________ = 3

(20) VIDEO INPUT DEFINITION:

Analog Signal

0.700, 0.000 (0.700 Vp-p)

Separate Syncs, Composite Sync, Sync on Green

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(21) Maximum Horizontal Image Size ________________ = 590 mm

(22) Maximum Vertical Image Size __________________ = 370 mm

(23) Display Gamma ________________________________ = 2.20

(24) Power Management and Supported Feature(s):

Active Off/Very Low Power, Standard Default Color Space,

Preferred Timing Mode

Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.650 Green X - 0.300 Blue X - 0.142 White X - 0.316

Red Y - 0.329 Green Y - 0.623 Blue Y - 0.065 White Y - 0.341

(35) ESTABLISHED TIMING I:

720 X 400 @ 70Hz (IBM,VGA)

640 X 480 @ 60Hz (IBM,VGA)

640 X 480 @ 67Hz (Apple,Mac II)

640 X 480 @ 72Hz (VESA)

640 X 480 @ 75Hz (VESA)

800 X 600 @ 56Hz (VESA)

800 X 600 @ 60Hz (VESA)

(36) ESTABLISHED TIMING II:

800 X 600 @ 72Hz (VESA)

800 X 600 @ 75Hz (VESA)

832 X 624 @ 75Hz (Apple,Mac II)

1024 X 768 @ 60Hz (VESA)

1024 X 768 @ 70Hz (VESA)

1024 X 768 @ 75Hz (VESA)

1280 X 1024 @ 75Hz (VESA)

(37) Manufacturer's Reserved Timing:

1152 X 870 @ 75Hz (Apple,Mac II)

(38-53) Standard Timing Identification:

1920 X 1200 @60Hz

1680 X 1050 @60Hz

1600 X 1200 @60Hz

1440 X 900 @60Hz

1400 X 1050 @60Hz

1280 X 1024 @60Hz

1280 X 960 @60Hz

1152 X 864 @75Hz

______________________________________________________________________

(54-71) Detailed Timing / Descriptor Block 1:

1920x1200 Pixel Clock: 154.00 MHz

______________________________________________________________________

Horizontal Image Size: 593 mm Vertical Image Size: 371 mm

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Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

Active Time: 1920 pixels Blanking Time: 160 pixels

Sync Offset: 48 pixels Sync Pulse Width: 32 pixels

Border: 0 pixels Frequency: 74.04 KHz

Vertical:

Active Time: 1200 lines Blanking Time: 35 lines

Sync Offset: 3 lines Sync Pulse Width: 6 lines

Border: 0 lines Frequency: 59.95 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (-)

______________________________________________________________________

(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:

QFG070100001

______________________________________________________________________

(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:

Min Vertical Freq - 50 Hz

Max Vertical Freq - 76 Hz

Min Horiz. Freq - 30 KHz

Max Horiz. Freq - 82 KHz

Pixel Clock - 170 MHz

Secondary GTF - Not Supported

______________________________________________________________________

(108-125) Detailed Timing / Descriptor Block 4:

Monitor Name:

VX2835wm

(126) No Extension EDID Block(s)

(127) CheckSum OK

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VX2835wm-HDMI

Time: 16:22:30

Date: Wed Jan 17, 2007

______________________________________________________________________

VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VX2835wm

______________________________________________________________________

EDID Block 0, Bytes 0-127

128 BYTES OF EDID CODE:

0 1 2 3 4 5 6 7 8 9

________________________________________

0 | 00 FF FF FF FF FF FF 00 5A 63

10 | 1F 0F 01 01 01 01 01 11 01 03

20 | 80 3B 25 78 2E 9E 71 A6 54 4C

30 | 9F 24 10 51 57 BF EF 80 D1 00

40 | B3 00 A9 40 95 00 90 40 81 80

50 | 81 40 71 4F 28 3C 80 A0 70 B0

60 | 23 40 30 20 36 00 51 73 21 00

70 | 00 1A 00 00 00 FF 00 51 46 47

80 | 30 37 30 31 30 30 30 30 31 0A

90 | 00 00 00 FD 00 32 4C 1E 52 11

100 | 00 0A 20 20 20 20 20 20 00 00

110 | 00 FC 00 56 58 32 38 33 35 77

120 | 6D 0A 20 20 20 20 01 4C

______________________________________________________________________

(08-09) ID Manufacturer Name ________________ = VSC

(11-10) Product ID Code _____________________ = 0F1F

(12-15) Last 5 Digits of Serial Number ______ = Not Used

(16) Week of Manufacture _________________ = 01

(17) Year of Manufacture _________________ = 2007

(10-17) Complete Serial Number ______________ = See Descriptor Block

(18) EDID Version Number _________________ = 1

(19) EDID Revision Number ________________ = 3

(20) VIDEO INPUT DEFINITION:

Digital Signal

Non - VESA DFP 1.x Compatible

(21) Maximum Horizontal Image Size ________________ = 590 mm

(22) Maximum Vertical Image Size __________________ = 370 mm

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(23) Display Gamma ________________________________ = 2.20

(24) Power Management and Supported Feature(s):

Active Off/Very Low Power, Standard Default Color Space,

Preferred Timing Mode

Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.650 Green X - 0.300 Blue X - 0.142 White X - 0.316

Red Y - 0.329 Green Y - 0.623 Blue Y - 0.065 White Y - 0.341

(35) ESTABLISHED TIMING I:

720 X 400 @ 70Hz (IBM,VGA)

640 X 480 @ 60Hz (IBM,VGA)

640 X 480 @ 67Hz (Apple,Mac II)

640 X 480 @ 72Hz (VESA)

640 X 480 @ 75Hz (VESA)

800 X 600 @ 56Hz (VESA)

800 X 600 @ 60Hz (VESA)

(36) ESTABLISHED TIMING II:

800 X 600 @ 72Hz (VESA)

800 X 600 @ 75Hz (VESA)

832 X 624 @ 75Hz (Apple,Mac II)

1024 X 768 @ 60Hz (VESA)

1024 X 768 @ 70Hz (VESA)

1024 X 768 @ 75Hz (VESA)

1280 X 1024 @ 75Hz (VESA)

(37) Manufacturer's Reserved Timing:

1152 X 870 @ 75Hz (Apple,Mac II)

(38-53) Standard Timing Identification:

1920 X 1200 @60Hz

1680 X 1050 @60Hz

1600 X 1200 @60Hz

1440 X 900 @60Hz

1400 X 1050 @60Hz

1280 X 1024 @60Hz

1280 X 960 @60Hz

1152 X 864 @75Hz

______________________________________________________________________

(54-71) Detailed Timing / Descriptor Block 1:

1920x1200 Pixel Clock: 154.00 MHz

______________________________________________________________________

Horizontal Image Size: 593 mm Vertical Image Size: 371 mm

Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

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Active Time: 1920 pixels Blanking Time: 160 pixels

Sync Offset: 48 pixels Sync Pulse Width: 32 pixels

Border: 0 pixels Frequency: 74.04 KHz

Vertical:

Active Time: 1200 lines Blanking Time: 35 lines

Sync Offset: 3 lines Sync Pulse Width: 6 lines

Border: 0 lines Frequency: 59.95 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (-)

______________________________________________________________________

(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:

QFG070100001

______________________________________________________________________

(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:

Min Vertical Freq - 50 Hz

Max Vertical Freq - 76 Hz

Min Horiz. Freq - 30 KHz

Max Horiz. Freq - 82 KHz

Pixel Clock - 170 MHz

Secondary GTF - Not Supported

______________________________________________________________________

(108-125) Detailed Timing / Descriptor Block 4:

Monitor Name:

VX2835wm

(126) Extension EDID Block(s): 1

(127) CheckSum OK

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Time: 16:22:30

Date: Wed Jan 17, 2007

______________________________________________________________________

VIEWSONIC CORPORATION

EDID CEA-861B Timing Extension Version 3

______________________________________________________________________

EDID Block 1, Bytes 128-255

Block Type: CEA EDID Timing Extension

0 1 2 3 4 5 6 7 8 9

________________________________________

0 | 02 03 19 F1 46 90 04 05 07 03

10 | 0E 23 09 07 07 83 01 00 00 65

20 | 03 0C 00 10 00 02 3A 80 18 71

30 | 38 2D 40 58 2C 45 00 51 73 21

40 | 00 00 1F 01 1D 80 18 71 1C 16

50 | 20 58 2C 25 00 51 73 21 00 00

60 | 9E 8C 0A D0 8A 20 E0 2D 10 10

70 | 3E 96 00 51 73 21 00 00 18 01

80 | 1D 00 72 51 D0 1E 20 6E 28 55

90 | 00 51 73 21 00 00 1E 00 00 00

100 | 00 00 00 00 00 00 00 00 00 00

110 | 00 00 00 00 00 00 00 00 00 00

120 | 00 00 00 00 00 00 00 33

______________________________________________________________________

(2)Detailed Timing Start at - 25

(3)DTV Supports Underscan, DTV Supports Basic Audio

, DTV Supports YCbCr 4:4:4, DTV Supports YCbCr 4:2:2

, Native Format: 1

(4)Video Data Block/Short Video Descriptors, Number of Data Byte to Follow: 6

(5) 1920x1080p 59.94/60Hz 16:9 New Native

(6) 1280x720p 59.94/60Hz 16:9 861

(7) 1920x1080i 59.94/60Hz 16:9 861

(8) 720(1440)x480i 59.94/60Hz 16:9 New

(9) 720x480p 59.94/60Hz 16:9 861

(10) 640x480p 59.94/60Hz 4:3 861

(11)Audio Data Block, Number of Data Byte to Follow: 3, Uncompressed

(12) Audio Channels: 2, Linear PCM (IEC60958)

(13) Sampling Frequency: 32KHz, 44.1KHz, 48KHz,

(14) Sampling bit rate: 16 bit, 20 bit, 24 bit,

(15)Speaker Data Block, Number of Data Byte to Follow: 3

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(16-18) FL/FR,

(19)Vendor Specific Data Block, Number of Data Byte to Follow: 5

(20-22) Vendor IEEE Registration ID: 000C03 Hexadecimal

(23-24) Vendor Specific Data: 1000 Hexadecimal

______________________________________________________________________

(25-42) Detailed Timing / Descriptor Block 1:

1920x1080p Pixel Clock: 148.50 MHz

______________________________________________________________________

Horizontal Image Size: 593 mm Vertical Image Size: 371 mm

Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

Active Time: 1920 pixels Blanking Time: 280 pixels

Sync Offset: 88 pixels Sync Pulse Width: 44 pixels

Border: 0 pixels Frequency: 67.50 KHz

Vertical:

Active Time: 1080 lines Blanking Time: 45 lines

Sync Offset: 4 lines Sync Pulse Width: 5 lines

Border: 0 lines Frequency: 60.00 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)

______________________________________________________________________

(43-60) Detailed Timing / Descriptor Block 2:

1920x1080i Pixel Clock: 74.25 MHz

______________________________________________________________________

Horizontal Image Size: 593 mm Vertical Image Size: 371 mm

Refreshed Mode: Interlaced Normal Display - No Stereo

Horizontal:

Active Time: 1920 pixels Blanking Time: 280 pixels

Sync Offset: 88 pixels Sync Pulse Width: 44 pixels

Border: 0 pixels Frequency: 33.75 KHz

Vertical:

Active Time: 540 lines Blanking Time: 22 lines

Sync Offset: 2 lines Sync Pulse Width: 5 lines

Border: 0 lines Frequency: 60.05 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)

______________________________________________________________________

(61-78) Detailed Timing / Descriptor Block 3:

720x480p Pixel Clock: 27.00 MHz

______________________________________________________________________

Horizontal Image Size: 593 mm Vertical Image Size: 371 mm

Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

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