Viewsonic VLCDS26105-1W Schematic

Service Manual

ViewSonic VX800-3

Model No.VLCDS26105-1W

18” Color TFT LCD Display

(VX800-3__SM_645 -Rev.1a-Feb 2003)

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

Copyright¤ 2003 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 02/11/03 Initial Reversion DCN-3047 C.Shen

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PRECAUTIONS AND NOTICES

Prior to using this manual, please ensure that you have carefully followed all the procedures outlined in the user manual for this product.

Read all of these instructions.

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Save these instructions for later use.

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Follow all warnings and instructions marked on the product.

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Do not use this product near water.

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This display should be installed on a solid horizontal base.

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When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray

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with liquid or aerosol cleaners.

Do not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet

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and other parts.

Adequate ventilation must be maintained to ensure reliable and continued operation and to

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protect the display from overheating. Do not block ventilation slots and openings with objects or install the display in a place where ventilation may be hindered.

Do not install this display near a motor or transformer where strong magnetism is generated.

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Images on the display will become distorted and the color irregular.

Do not allow metal pieces or objects of any kind fall into the display from ventilation holes.

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Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable operation of the product and to protect it from overheating, those openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should never be placed near or over a radiator or heat register. This product should not be placed in a built-in installation unless proper ventilation is provided.

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Content

1.Engineering Specifications . ....................................................................... 1

1.1 Scope.......................................................................................................................................1

1.2 Electrical Characteristics ......................................................................................................3

1.3 Mechanical Characteristics ................................................................................................12

1.4 Packaging ............................................................................................................................. 13

1.5 Environmental Characteristics...........................................................................................13

1.6 Factory setting...................................................................................................................... 13

Appendix IPreset Signal Timings..................................................................................... 14

Analog timing mode table.......................................................................................15

Digital timing mode table........................................................................................17

Appendix II.......................................................................................................................................

EDID Code............................................................................................................................1 9

Analog.................................................................................................................... 19

Digital ..................................................................................................................... 19

Appendix III Label Printing .....................................................................................................20

ID LABEL ...............................................................................................................20

Bar Code label/Serial No Label ..............................................................................20

2.Front Panel Function Control Description............................................... 21

2.1 User control functions ......................................................................................................... 22

2.2 OSD operation flow ............................................................................................................. 22

3.Circuit Description ..................................................................................... 31

3.1. Interface Board ...................................................................................................................32

3.2 Audio Board.......................................................................................................................... 36

4.Troubleshooting Flow Chart ..................................................................... 38

4.1 Figure of Waveform.............................................................................................................38

4.2 No Display on Screen (Screen is black, LED is off)....................................................... 41

4.3 No Display on Screen ( LED is green) ............................................................................. 42

4.4 No Power On........................................................................................................................ 43

4.5 No Sound (Test signal: 1r.m.s sine waveform ) .............................................................. 44

4.6 Show “No Signal” on screen ..............................................................................................45

4.7 Keypad can not work...........................................................................................................45

5.Adjust Procedure ....................................................................................... 46

5.1 PREPARATION OF MANUAL ALIGNMENT................................................................... 47

5.2 COLOR TEMPERATURE ALIGNMENT .......................................................................... 48

5.3 FACTORY PRESET SETTING..........................................................................................50

6.Mechanical Assembly................................................................................ 51

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6.2 Mechnical Parts List ............................................................................................................5 6

7.Schematic Diagrams.................................................................................. 57

8.PCB Layout................................................................................................. 64

9.Parts Lists................................................................................................... 67

9.1 Recommended Spare Parts List ....................................................................................... 67

9.2 Complete Parts List .............................................................................................................69

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I. Engineering Specifications.

1.1 Scope

The following specifications are applicable to model VX800-3 18 inch color LCD monitor.

General Description (Quick Reference)

LCD

Input Signals RGB

Chi-Mei 18.0” SXGA TFT- MVA (premium) Size Effective Display Size Pixel Pitch Resolution Brightness Contrast Ratio Color Viewing Angle

18.0 inches diagonal

357.12 mm X 285.696 mm (typical)

0.279 mm X 0.279 mm 1280 x 1024 dot (SXGA) 250 cd / m² (typ.), 200 min. 500:1(typ.), 400:1(min.) 16,777,216 Up 80° Down 80° (min.) Left 80° Right 80°(min.) CR>10:1

Surface treatment

Analog 0.7 Vp-p / 75ȍ

Anti-Glare

Positive Polarity

TTL level Separate sync. Composite sync

Digital

Sync-On-Green TMDS.

Input connector Analog mini D-sub 15 pin x 1

Digital DVI-D x 1 Audio min-Din 2 channel x 2 Micro-phone jack

Speaker Max 3W x 2

Main IC GM5120

Display Colors 16,777,216

Preset Timings SXGA/60Hz, 75Hz,

XGA/60Hz, 70Hz, 75Hz, 85Hz SVGA/56Hz, 60Hz, 72Hz, 75Hz, 85Hz VGA/60Hz, 72Hz, 75Hz, 85Hz Dos-text/70Hz

Synchronization Horizontal

Vertical

30 kHz to 82 kHz 50 Hz to 75 Hz

Non-interlaced

Max Pixel Rated 135Mhz

Resolution Horizontal

Vertical

1280 dots 1024 lines

(automatically) (automatically)

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Active Display Area

Horizontal Vertical

357.12 mm (typical)

285.696 mm (typical)

(Active display area is dependent upon signal timings)

Power Supply

AC INPUT AC90V-264V 50 / 60 Hz Rating AC Power Consumption Current Rating AC input

Dimensions Net

Weight Net

Environmental Conditions

60W (Max.)

less than 3W

DC input

Gross

Operating

Temperature

On mode Off mode( w/o audio cable connected )

0.7A

4.0A

435.0 (W) x 461.5 (H) x 180.6 (D) mm

565.0 (W) x 525.0 (H) x 260.0 (D) mm

7.0Kg

9.7Kg

Operating Humidity

Storage Temperature

Storage Humidity Accessories AC power cord-UL

AC power cord-Schuko

Analog VGA cable

DVI-D cable

Audio cable

Micphone cable

ViewSonic CD-Wizard

@AC 100-240V @DC 12.0V

0 to 50°C (PANEL SURFACE) 20 to 85% ( no condensation, < wetbulb 29 degree C )

-20 to 60°C 5 to 85% ( no condensation, < wetbulb 29 degree C )

1.8m

1.8m 1 1 1

Regulatory Standards

UL, CSA or cUL, CB Report, CE, FCC-B, DOC-B, TUV/Ergo

(which covers ISO13406-2 and MPRIII), TUV/GS, PCT

(GOST-R) with 20 Hygienic certificates, PCBC (B Mark),

SEMKO, DEMKO, FIMKO, NEMKO, BSMI, VCCI, CCIB/EMC,

CCEE, PSB (Singapore Safety), TCO’99, NOM and Argentina

IRAM (thru TUV). Osd Language English, French, German, Spanish, Finnish, Italian, Japanese,

Traditional Chinese, Simplified Chinese

Others Tilt Angle 20° up / 5° down

Power Saving System

User Control by tactile keypad with On Screen Display-

VESA DDC1/2B compatible ( digital port DDC2B only)

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1.2 Electrical Characteristics

1.2-1 Power Supply

AC Input

Input Voltage AC90-264V

Frequency 47 / 63Hz

Power Consumption:

60 W (max) on mode

Less than 3W power save mode (audio cable not connected)

Current Rating 0.7A @ AC100-240V

1.2-2 LCD

LCD Chi-Mei panel(TFT-MVA)

Effective display size 357.12 (H) x 285.696 (V) mm (typ)

18.0” / 45.72 cm diagonal

Pixel number 1280 x 1024 pixels

Color filter arrangement R.G.B. vertical stripe

Display method TFT, normally black

Drive method Active matrix (TFT) – MVA

Dot pitch 0.093 (H) x 0.279 (V) mm

Pixel pitch 0.279 (H) x 0.279 (V) mm

Dot number 1280 x 1024 x 3 dots

Backlight Edge-lighting type with 6 CCFLs

(Cold Cathode Fluorescent Tube)

Brightness 200 cd / m2(min: center / all white) Contrast ratio 400:1 (min)

Display color 16,777,216

Typical viewing angle Up 80° / down 80° / right 80° / left 80° (min.)

(Contrast ratio>10 at Ta=25°C, 77°F)

Response time 25 msec (Typical at 25 degree C)

1.2-3 Interface Signals

2.3.1 RGB Video Signals

2.3.1.1 Separate Sync. Signals

Analog R, G, B 0 - 0.7 Vp-p

Signal Level 75ȍ± 5%

Sync Level TTL level

Sync Polarity independent

2.3.1.2 Sync On green, Composite Sync

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2.3.2 TMDS digital Signals

2.3.2.1 Video type

DVI 1.0 compliant

2.3.3 Audio spec.

2.3.3.1 Line input connection

3.5 mm stereo jack x 1

2.3.3.2 Line input signal & impedance

1.0Vrms, 10 kOhm

2.3.3.3 OUTPUT

SIGNAL AT SPEAKER TERMINAL

3W @ < 5% DISTORTION

2.3.3.4 Frequency Response

400 Hz – 20 KHz

2.3.3.5 Connector PC99 requirement Audio in

Lime Green pantone # 577C

2.3.3.6 Cable length

1.8 m

2.3.3.7 Audio DPMS

Speakers stay on when the rest of the monitor is in power saving.

2.3.3.8 Speakers

Impedance 4 Ohm

Output Wattage 3.0W (max.) x 2

2.3.4 Input Signal Connectors

2.3.4.1 Analog RGB Video Input: 15 pin mini D-sub

PIN NO. Separate Sync 1 RED 2 GREEN 3 BLUE 4 GROUND 5 GROUND 6 GROUND 7 GROUND 8 GROUND 9 +5V 10 GROUND 11 N.C

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5 1

12 SDA 13 H.SYNC 14 V.SYNC 15 SCL

2.3.4.2 Digital TMDS DVI-D Connector

DVI-D connector pin assignment

Pin No. Signal Name Description

1 RX2- TMDS negative differential input, channel 2

2 RX2+ TMDS positive differential input, channel 2

3 GND Logic Ground

4 Reserved 4 Reserved. No connection 5 Reserved 5 Reserved. No connection

6 DDC-CLK DDC2B Clock

7 DDC-DAT DDC2B Data

8 Reserved 8 Reserved. No connection

9 RX1- TMDS negative differential input, channel 1

10 RX1+ TMDS positive differential input, channel 1

11 GND Logic Ground

12 Reserved 12 Reserved. No connection

13 Reserved 13 Reserved. No connection

14 VCCX Power

15 GND Logic Ground

16 SENS SENSE Pin, Pull High

17 RX0- TMDS negative differential input, channel 0

18 RX0+ TMDS positive differential input, channel 0

19 GND Logic Ground

20 Reserved 20 Reserved. No connection

21 Reserved 21 Reserved. No connection

22 GND Logic Ground

23 RXC+ TMDS positive differential input, reference clock

24 RXC- TMDS negative differential input, reference

clock

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2.3.4.3 Audio Connector

2.5 mm Stereo jack x 1,

3.5mm Microphone jack x 1

2.3.5 Signal Timing

2.3.5.1 User Timing Mode memory

Always do auto image adjust after timing mode change

2.3.5.2 Timing mode Change

Maximum time for mode Change with auto image adjust 7 sec.

2.3.5.3 Signal Timing Table

The factory test input video signal is defined as the following table:

Preset H.sync V.sync SYNC POL. Video Mode Description

No. Frequency Frequency H-

SYNC

MOD [1] 31.468 ±1.0KHz 70.0 ±1.0Hz + - 640X350(70) Text mode

MOD [2] 31.468 ±1.0KHz 70.0 ±1.0Hz - + 720X400(70) Dos text

MOD [3] 31.468 ±1.0KHz 59.94 ±1.0Hz - - 640X480(60) VESA STANDARD

MOD [4] 35.01 ±1.0KHz 66.67 ±1.0Hz - - 640X480(66) MAC

MOD [5] 37.86 ±1.0KHz 72.81 ±1.0Hz - - 640X480(72) VESA STANDARD

MOD [6] 37.5 ±1.0KHz 75.0 ±1.0Hz - - 640X480(75) VESA STANDARD

MOD [7] 43.27 ±1.0KHz 85.0 ±1.0Hz - - 640X480(85) VESA STANDARD

MOD [8] 35.16 ±1.0KHz 56.25 ±1.0Hz + + 800X600(56) VESA STANDARD

MOD [9] 37.88 ±1.0KHz 60.32 ±1.0Hz + + 800X600(60) VESA STANDARD

MOD [10] 48.077 ±1.0KHz 72.19 ±1.0Hz + + 800X600(72) VESA STANDARD

MOD [11] 46.875 ±1.0KHz 75.0 ±1.0Hz + + 800X600(75) VESA STANDARD

MOD [12] 53.67 ±1.0KHz 85.0 ±1.0Hz + + 800X600(85) VESA STANDARD

MOD [13] 49.72 ±1.0KHz 74.5 ±1.0Hz - - 832X624(75) MAC

MOD [14] 48.363 ±1.0KHz 60.0 ±1.0Hz - - 1024X768(60) VESA STANDARD

MOD [15] 58.01 ±1.0KHz 72.08 ±1.0Hz - - 1024X768(72) VESA STANDARD

MOD [16] 60.023 ±1.0KHz 75.0 ±1.0Hz + + 1024X768(75) VESA STANDARD

MOD [17] 68.67 ±1.0KHz 85.0 ±1.0Hz + + 1024X768(85) VESA STANDARD

MOD [20] 63.981 ±1.0KHz 60.02 ±1.0Hz + + 1280X1024(60) VESA STANDARD

MOD [21] 79.976 ±1.0KHz 75.0 ±1.0Hz + + 1280X1024(75) VESA STANDARD

SYNC

2.4 Luminance Control

Analog signal (6500K)

Over200cd/m

(@ Cont / Bright max)

Digital signal (6500K)

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Over 200 cd / m

(@ Cont / Bright max)

2.5. Synchronization

Horizontal: 30 to 82 kHz

Vertical: 50 to 75 Hz Non-interlaced

Maximum 75Hz @ 1280 x 1024 mode

Recommended 60Hz @ 1280 x 1024 mode

2.6 Display Characteristics

2.6.1 Picture Size

Horizontal Width 357.12 mm (typical)

Vertical Width 285.696 mm (typical)

2.6.2 Optical Characteristics

General qualities: The following data was measured by BM7 of TOPCON

Data are panel optical data, for analog signal there are +- 5% tolerance.

Item Code Conditions Min. Typ. Max. Unit

Contrast CR White

Black at Image

㧛

400 500

Center White Brightness



L VMAX

Full White 200 250

㧙㧙

㧙

cd / m

Uniformity of Brightness

Response At 25 degree Right ĬR

Viewing Left ĬL 80 85 Angle Up ĭH 80 Down ĭL 80 Luminance

control

Bmin

Bmax

Tpd All White ĺ All Black

All Black ĺ All White

CenterCR㧪10 85

All White(digital signal

or analog 6500k)

Brightness at center of

70 80

㧙

15 20

㧙㧙

85 85

㧙㧙

>=200(cont / bright backlight max)

ms ms Degree

Degree Degree Degree

cd / m

display surface

These characteristics were measured under the following conditions:

Temperature: 77 ± 6°F, 25 ± 5°C

Viewing angle:

U = 0°, AR = 0°

Warm Up time: minimum 30 minutes

Measuring instrument: TOPCOM BM-7 Luminance Meter

Measuring distance: 500 mm

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Measuring angle: 2°

500mm

2 Degree

Notes:

(Note 1) Contrast ratio is defined as the following formula.

BM-7

Contrast ratio =

Brightness with allpixels at "black"

(Note 2) Viewing angle is measured as follows:

Brightness (Luminance) with all pixels at "white "

0QTOCN

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ǰ .ࠑ

QENQEM

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Ǿ .ࠑ

ǰ.

Ǿ.

’

Ǿ*

ǰ4

(Note 3) Definition of response time is as follows:

QENQEM

Ǿ *ࠑ

;

’

ǰ 4ࠑ

Response time is measured when the display data is changed from white to black.

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White(TFT OFF)

White

Optical Response

Black(TFT ON) White(TFT OFF)

100

㧑

(Note 4) Judge points for brightness uniformity

Brightness uniformity is judged at nine (9) points on display area:

128 512 896

384

670

(9)

(6)

(3)

(8)

(5)

(2)

(7)

(4)

(1)

Bmin

BUNI

㧩

Bmax

Bmax: Maximum Brightness

Bmin : Minimum Brightness

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2.6.3. LCD Panel

Mechanical Active Area (mm) 357.12 x 285.696

Pixel pitch (mm) 0.279 (0.093x3)

Mass typical (g) 2500

Panel dimensions (WxDxH) mm 404.0x322.2x20.2 mm(typ)

Resolution

1280 x 1024

Surface Treatment with Haze value Anti-glare, 3H

Panel Model number M180E1-L03 (18” TFT)

Panel Interfaces Dual LVDS

Optical performance Contrast ratio 500:1 Typical

400 :1 Minimum

Luminance of white(center) 250 nits Typical

200 nits Minimum

White Uniformity 80% (5 points measurement)

Chromaticity values (red, green, blue) center

Color temperature

‘x = +/- 0.030 ‘y = +/- 0.030

‘x = 0.310 +/- 0.030

‘y = 0.330 +/- 0.030

EBU 70% Min

Colors True 8 bits (16.7M)

Viewing Angle H, V (CR >10) 160 (Min)

Film

Response time ms

Not used wide viewing film

Typical Tr = 15ms ; Tf = 10ms

Maximum Tr = 20ms; Tf = 15ms

Number of Back Light(CECIL) 6 – Edge type back light

Backlight (hrs) 50,000 hours minimum; 60,000 hours typical

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2.7 Power Management

Unit will enter power saving mode under the following conditions:

Power Management condition and status

State Signals Power Video LCD LED

Horizontal Vertical Video Supply Circuit

On Pulses Pulses Active On On On Green

Stand-by No Pulses Pulses Blanking Off Off Amber

Suspend Pulses No

Pulses

Off No Pulses No

Pulses

Complete N/A N/A N/A Off Off

2.8 FullScan Capability

When the input display mode is not 1280x1024,the image area is changed

as follows:

Flex Scan Input display Expanded Rate Expanded Mode Mode Resolution Horizontal Vertical Resolution Expansion 1 640x350 2 2.93 1280x1024 Expansion 2 640x400 2 2.56 1280x1024

Expansion 3 640x480 2 2.13 1280x1024 Expansion 4 720x400 1.78 2.56 1280x1024 Expansion 5 800x600 1.6 1.71 1280x1024 Expansion 6 832x624 1.54 1.64 1280x1024

Expansion 7 1024x768 1.25 1.33 1280x1024 Expansion 8 1152x864 1.11 1.19 1280x1024

Standard 1280x1024 1 1 1280x1024

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Mechanical Characteristics

1.3

3.1 Dimensions

Net: 435.0 (W) x 461.5 (H) x 180.6 (D) mm

Gross: 565.0 (W) x 525.0 (H) x 260.0 (D) mm

3.2 Weight Net: 7.0Kg

Gross: 9.7Kg

3.3 Base Rotation

Tilt: up 20 ° / down 5 °

3.4 Labeling

3.4.1 ID Label (Paste on Rear Cover)

Material: Polyester’s

Color: Black (same as plastic color) / White (Letter)

Size: 50 (W) X 25 (H) mm

Location: Rear Back Label

Contents: Appendix III

3.4.2 Bar Code Number Label (Carton Box)

Material: Art Paper

Color: White (Base) / Black (Letter)

Size: 76 (W) X 76 (H) mm

Location: Carton Box (Side Wall)

Contents: Appendix III

3.4.3 Serial Number Label (Rear Back Label)

Material: Art Paper

Color: White (Base) / Black (Letter)

Size: 25 (W) X 50 (H) mm

Location: Paste on Rear Back Label

Contents: Appendix III

3.5 Serial Number Format

Serial No. PPP

YY WW XXXXX

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Serial No. (5-digit)

Manufacturing week

Last digit of manufacturing year

Regional Product ID Code:

VX800-3:A28

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3.6 UPC Coding (Code 39 format)

Worldwide Model UPC Code: 766907 81271 8

1.4 Packaging

4.1 Carton Box

Dimensions: 565mm (W) x 525mm (H) x 260mm (D)

Color: 4-Color printing box

Material: BC-FLUTE or Equivalent, double wall

1.5 Environmental Characteristics

5.1 Operating Conditions

Temperature: 0 through + 40° C

Humidity: 20% To 85% (39 degree welt bulb)

Altitude: 0 – 3,000 Meter

5.2 Non-operating Conditions

Temperature: -20 through +60 ° C

Humidity: 5% To 85% (39 degree welt bulb)

Altitude: 0 – 12,000 meter

1.6 Factory setting

6.1 OSD

Brightness 100% (based on 0-100%)

Contrast 80% (based on 0-100%)

AutoTune Executed

Color Temperature 6500k

Volume 50%

Balance 50%

Bass/Treble 50%

OSD Timeout 15 Sec

Language English

OSD position Center

6.2 Power Switch

OFF

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Appendix I Preset Signal Timings

H-Video

Horizontal

V-Video

Vertical

H active

H front H back

H pulse

H total

V active

V front

V pulse

V total

V back

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Analog Timing Mode Table

1 2 3 4 5 6 7

Signal name symbol TEXT

mode

H-frequency (kHz) 31.468 31.469 31.468 35.001 37.5 37.862 43.269

V-frequency (Hz) 70.087 70.087 59.941 66.667 75 72.807 85.005

Pixel rate (MHz) 25.175 28.322 25.175 30.240 31.5 31.501 36.000

H-sync Ths 96 108 96 64 64 40 56

H-back porch Thb 48 54 48 96 120 128 80

Count num

(H-total)

H- front porch Thf 16 18 16 64 16 24 56

V-sync Tvs 2 2 2 3 3 3 3

V-back porch Tvb 60 35 33 39 16 28 25

Count num

(V-total)

V-front porch Tvf 37 12 10 3 1 9 1

Thd 800 900 800 864 840 832 832

Tvd 449 449 525 525 500 520 509

TEXT

mode

VGA MAC-II VESA-VGA VESA-VGAVESA-VG

H-sync. Polarity Positive Negative Negative Negative Negative Negative Negative

V-sync Polarity Negative Positive Negative Negative Negative Negative Negative

H-resolution (dots) 640 720 640 640 640 640 640

V-resolution (lines) 350 400 480 480 480 480 480

8 9 10 11 12 13 14

Signal name SymbolIBM-8514A SVGA SVGA SVGA SVGA MAC 16" XGA

H-frequency (kHz) 35.156 37.879 48.077 46.875 53.674 49.725 48.363

V-frequency (Hz) 56.250 60.317 72.188 75.000 85.061 74.5 60.004

Pixel rate (MHz) 36.000 40.000 50.000 49.500 56.250 57.283 65.000

H-sync Ths 72 128 120 80 64 64 136

H-back porch Thb 128 88 64 160 152 224 160

Count num

Thd 1024 1056 1040 1056 1048 1152 1344

(H-total)

H- front porch Thf 24 40 56 16 32 32 24

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V-sync Tvs 2 4 6 3 3 3 6

V-back porch Tvb 22 23 23 21 27 39 29

Count num

Tvd 625 628 666 625 631 667 806

(V-total)

V-front porch Tvf 1 1 37 1 1 1 3

H-sync. Polarity Negative Positive Positive Positive Positive Negative Negative

V-sync Polarity Negative Positive Positive Positive Positive Negative Negative

H-resolution (dots) 800 800 800 800 800 832 1024

V-resolution (lines) 600 600 600 600 600 624 768

15 16 17 18 19 20 21

Signal name SymbolXGA XGA XGA XGA SXGA 720P SXGA

H-frequency (kHz) 56.476 58.099 60.023 68.677 63.981 79.976 45.000

V-frequency (Hz) 70.069 72.082 75.029 84.997 60.02 75.025 60.00

Pixel rate (MHz) 75.000 78.084 78.750 94.500 108 135 74.250

H-sync Ths 136 136 96 96 112 40 144

H-back porch Thb 144 160 176 208 248 270 248

Count num (H-total) Thd 1328 1344 1312 1376 1688 1658 1688

H- front porch Thf 24 24 16 48 48 60 16

V-sync Tvs 6 6 3 3 3 5 3

V-back porch Tvb 29 29 28 36 38 20 38

Count num (V-total) Tvd 806 806 800 808 1066 750 1066

V-front porch Tvf 3 3 1 1 1 5 1

H-sync. Polarity Negative Negative Positive Positive Positive Positive Negative

V-sync Polarity Negative Negative Positive Positive Positive Positive Negative

H-resolution (dots) 1024 1024 1024 1024 1280 1280 1280

V-resolution (lines) 768 768 768 768 1024 1024 720

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Digital Timing Mode Table

1 2 3 4 5 6 7

Signal name symbol TEXT

mode

H-frequency (kHz) 31.468 31.469 31.468 31.468 37.5 37.862 43.269

V-frequency (Hz) 70.087 70.087 60.000 59.941 75 72.807 85.005

Pixel rate (MHz) 25.175 28.322 25.175 25.175 31.5 31.501 36.000

H-sync Ths 96 108

H-back porch Thb 48 54

Count num

(H-total)

H- front porch Thf 16 18

V-sync Tvs 2 2

V-back porch Tvb 60 35

Count num

(V-total)

V-front porch Tvf 37 12

Thd 800 900

Tvd 449 449

TEXT

mode

VGA VGA VESA-VGAVESA-VGAVESA-VG

800

449

96 64 40 56

48 120 128 80

800 840 832 832

16 16 24 56

2 3 3 3

33 16 28 25

525 500 520 509

6 1 9 1

H-sync. Polarity Positive Negative Negative Negative Negative Negative Negative

V-sync Polarity Negative Positive Negative Negative Negative Negative Negative

H-resolution (dots) 640 720 640 640 640 640 640

V-resolution (lines) 350 400 400 480 480 480 480

8 9 10 11 12 13 14

Signal name SymbolIBM-8514A SVGA SVGA SVGA SVGA XGA XGA

H-frequency (kHz) 35.156 37.879 48.077 46.875 53.674 48.363 56.476

V-frequency (Hz) 56.250 60.317 72.188 75.000 85.061 60.004 70.069

Pixel rate (MHz) 36.000 40.000 50.000 49.500 56.250 65.000 75.000

H-sync Ths 72 128 120 80 64 136 136

H-back porch Thb 128 88 64 160 152 160 144

Count num

Thd 1024 1056 1040 1056 1048 1344 1328

(H-total)

H- front porch Thf 24 40 56 16 32 24 24

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V-sync Tvs 2 4 6 3 3 6 6

V-back porch Tvb 22 23 23 21 27 29 29

Count num

Tvd 625 628 666 625 631 806 806

(V-total)

V-front porch Tvf 1 1 37 1 1 3 3

H-sync. Polarity Negative Positive Positive Positive Positive Negative Negative

V-sync Polarity Negative Positive Positive Positive Positive Negative Negative

H-resolution (dots) 800 800 800 800 800 1024 1024

V-resolution (lines) 600 600 600 600 600 768 768

15 16 17 18 19

Signal name SymbolXGA XGA XGA SXGA HD-720P

H-frequency (kHz) 58.099 60.023 68.677 63.981 45.000

V-frequency (Hz) 72.082 75.029 84.997 60.02 60.00

Pixel rate (MHz) 78.084 78.750 94.500 108 74.250

H-sync Ths 136 96 96 112 40

H-back porch Thb 160 176 208 248 270

Count num (H-total) Thd 1344 1312 1376 1688 1658

H- front porch Thf 24 16 48 48 60

V-sync Tvs 6 3 3 3 5

V-back porch Tvb 29 28 36 38 20

Count num (V-total) Tvd 806 800 808 1066 750

V-front porch Tvf 3 1 1 1 5

H-sync. Polarity Negative Positive Positive Positive Negative

V-sync Polarity Negative Positive Positive Positive Negative

H-resolution (dots) 1024 1024 1024 1280 1280

V-resolution (lines) 768 768 768 1024 720

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Appendix II EDID Code

Analog

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 | 11 F5 01 01 01 01 01 0C 01 03

20 | 0E 24 1D 78 2A 16 76 A2 5A 4B

30 | 97 24 18 4F 54 BF EF 00 81 80

40 | 01 01 01 01 01 01 01 01 01 01

50 | 01 01 01 01 30 2A 00 98 51 00

60 | 2A 40 30 70 13 00 65 1E 11 00

70 | 00 1E 00 00 00 FF 00 41 32 38

80 | 30 32 30 31 30 30 30 30 31 0A

90 | 00 00 00 FD 00 32 4B 1E 53 0E

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

110 | 00 FC 00 56 58 38 30 30 2D 33

120 | 0A 20 20 20 20 20 00 AE

Digital

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 | 11 F5 01 01 01 01 01 0C 01 03

20 | 80 24 1D 78 2A 16 76 A2 5A 4B

30 | 97 24 18 4F 54 BF EF 00 81 80

40 | 31 0A 01 01 01 01 01 01 01 01

50 | 01 01 01 01 30 2A 00 98 51 00

60 | 2A 40 30 70 13 00 65 1E 11 00

70 | 00 1E 00 00 00 FF 00 41 32 38

80 | 30 32 30 31 30 30 30 30 31 0A

90 | 00 00 00 FD 00 32 4B 1E 53 0E

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

110 | 00 FC 00 56 58 38 30 30 2D 33

120 | 0A 20 20 20 20 20 00 03

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Appendix III Label Printing

(M)

ID LABEL

Bar Code label/Serial No Label

ViewSonic VX800

Model Number: VLCDS26105-1

Serial Number: A28YYWWnnnnn

ViewSonic

VX800

7 66907 81271 8

Made In China

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2. Front Panel Function Control Description

2.1 User control functions

Control buttons:

1. Press power button to power on LCD monitor. Led on the power button will turn to green.

2. Press ‘2” button while no OSD will toggle the digital input port and analog input port to display.

3. Press “up” and ‘down” button simultaneously will reset the contrast and brightness to default.

4. Press ‘1” button will enter OSD main menu.

5. Press “volume plus”, “volume minus” can directly adjust the audio volume.

6. Press “mute” button can directly mute on or off the audio volume.

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