ViewSonic VG810B Manuale utente

Model No. VLCDS27944-1W/-2W

18” Color TFT LCD Display

Service Manual

ViewSonic VG810s/b-1

ViewSonic

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

(VG810s/b_SM_720 Rev. 1aMar.2004)

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.

Optiquest is a registered trademark of ViewSonic Corporation.

Revision History

Revision Date Description Of Changes Approval

1a 03/02/04 Initial Release DCN-3603 Angela Luh

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TABLE OF CONTENTS

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

6. Trouble Shooting Flow Chart

9. Block Diagram

10. Schematic Diagrams

7. Recommended Spare Parts List

1. Precautions and Safety Notices

5. Adjusting Procedure

8. Exploded Diagram And Spare Parts List

11. PCB Layout Diagrams

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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.

• Save these instructions for later use.

• Follow all warnings and instructions marked on the product.

• Do not use this product near water.

• This display should be installed on a solid horizontal base.

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

aerosol cleaners.

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

parts.

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

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.

1. Precautions and Safety Notices

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2.1 General Description

Active matrix thin-film-transistor (TFT) Type No: LM181E06-A4M5

LCD

LM181E06-A4M5 Active screen Size

Effective Display Size

Pixel Pitch

Pixel Format

Brightness

Contrast Ratio

Color (8 bits)

Viewing Angle range

(CR≧10, at Ta=25°C)

Backlight

18.1 inches diagonal

359.04mm (H) × 287.232mm ( V )

0.280mm (H) × 0.280mm(V)

1280×1024 (SXGA )

250cd/m2( Typ. & panel depends )

350:1 ( Typ. & panel depends)

16,777,216 colors

Up 80° Down 80°(type)

Left 80° Right 80°(type)

6 CCFL

Input Signals Analog RGB 0.7Vp-p / 75Ω

Digital RGB DVI Ver1.0 (TMDS Single Link)

H/V Separate sync. Sync 2.0~5.0Vp-p, Positive/Negative, 2.2KΩ

Input connector Analog D-sub 15 pin *1

Digital DVI-D 24pin *1

Synchronization Horizontal

Vertical

Non-interlaced

30 kHz to 82 kHz

50 Hz to 85 Hz

Maximum Pixel

Rated 135MHz

(automatically)

Resolution Horizontal

Vertical 1280 dots

1024 lines

Active Display Area Horizontal

Vertical 359.04 mm (typical , panel depends)

287.232 mm (typical , panel depends)

Power Supply

Voltage Rating AC input

DC 12V AC 100V~240V / 2A , 47.5~63Hz

5A.

AC Power

Consumption

less than 60W

less than 1W

On mode.

Active OFF mode.

DC Power OFF.

Current Rating AC input 2A @AC 100~240V.

Dimensions 408(W)*370.2(H)*65.4(D)mm(without stand base)

408(W)*433.1(H)*180.27(D)mm(withstand base)

Weight (net) 7Kg (net weight)

Environmental

Conditions Operating Temperature

Operating Humidity

Storage Temperature

Storage Humidity

0 to 40°C

20 to 90%

-20 to 60°C

5 to 90% (non-condensation)

Accessories AC cable

User Guide

CD Rom

Warranty Card

HD15 - HD15 cable

1.8m

English

Regulatory Standard UL, cUL, FCC-B, CB, CE, EPA, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 &

MPRII), NEMKO, SEMKO, DEMKO, FIMKO, GOST-R + 20 ORIGINAL COPIES

HYGIENIC, PCBC, VCCI, BSMI, CCEE, PSB, C-TICK, TUV-S, TCO 99(VG810b),

TCO'03(VG810s), Energy, Energy Star, PCT, Taiwan Green Mark

Others Tilt Angle 20° up / 5° down

VESA DDC 2B compatible

2. Specification

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2.2 Electrical Characteristics

2.2.1 Power Supply

AC Input Voltage AC 100~240 V / 47.5~63Hz

Power Consumption:

Less than 60W On mode

Less than 1W Active Off mode

Less than 1W DC power Off

Current Rating 2A @ AC 100~240V

Inrush Current

Less than 50 Amp(peak) for 120 Vac

Less than 100 Amp(peak) for 230 Vac

Power cord：detachable, 3P, 1.8m

2.2.2 LCD

LCD Active matrix thin-film-transistor (TFT)

Active screen size 18.1 inches (359.04mm × 287.232mm) diagonal

Pixel Format 1280 x 1024 (SXGA )

R.G.B.stripearrangement

Display method TFT, normally Black

Pixel pitch 0.280 (H) x 0.280 (V) mm

Dot number 1280 x 1024 x 3 dots

Backlight Edge-lighting type with 6 CCFL

(Cold Cathode Fluorescent Lamp)

Brightness 250 cd/m2 ( Typ. & panel depends )

Contrast ratio 350:1 ( Typ. & panel depends )

Display color 16,777,216 colors

viewing angle typical Up 80° / down 80° / right 80° / left 80°

(Contrastratio≧10 at Ta=25°C / 77°F)

Response time Rise time 15mS, Fall time 15mS

2.2.3 Luminance Control

100IRE , 6500K, Center of screen, Full white pattern, 50cm, 90°

OVER 200 cd / m2(x = 0.313 +/- 0.03 , y = 0.329 +/- 0.03)

(@ Contrast / Brightness max)

2.2.4 Synchronization

Horizontal ：30 to 82 kHz

Vertical ：50 to 85 Hz Non-interlaced

Recommended 1280 x 1024 @60Hz mode

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2.2.5 Power Management

VG810 will enter power saving mode under the following conditions:

Power Management condition and status

Signals

State Horizontal Vertical Video

Power

Supply LED

On Pulses Pulses Active <60W Green

Pulses No Pulse

No Pulse Pulses

Active off

No Pulse No Pulse

Blank <1W Amber

Out off scan

range

<30KHz ,

>82KHz

<50Hz ,

>85Hz - <60W Green

AC power Off - - - Off Off

DC power Off - - - <1W Off

2.3 Video alignment

2.3.1 Color temperature alignment

a. Apply VESA 1280x1024 / 60Hz, full white pattern.( Input signal level =0.7Vp-p )

b. Auto white balance must be finish at 32 gray pattern before auto alignment.

c. Set default ÆContrast to 70%, Brightness to 100%.

9300°K, 6500°K：RGB Offset set as below

9300°K 6500°K 5400°K 5000°K

R Offset 128 128 128 128

G Offset 128 128 128 128

B Offset 128 128 128 128

2.3.2 Digital alignment

2.3.2.1 Apply VESA 1280x1024 / 60Hz , full white pattern.

2.3.2.2 Adjust R, G, B Gain to meet following chromaticity spec.

x = 0.313 ±0.003, y = 0.329 ±0.003

2.3.3 Analog alignment

2.3.3.1 9300°K High luminance alignment

2.3.3.1.1 Apply VESA 1280x1024 / 60Hz, full white pattern.

2.3.3.1.2 Adjust R, G, B Gain to meet following chromaticity spec.

9300°K →x = 0.283 ±0.003, y = 0.298 ±0.003 , Y > 150 cd/m2

2.3.3.2 6500°K High luminance alignment

2.3.3.2.1 Apply VESA 1280x1024 / 60Hz , full white pattern.

2.3.3.2.2 Adjust R, G, B Gain to meet following chromaticity spec.

6500°K →x = 0.313 ±0.003, y = 0.329 ±0.003 , Y > 190 cd/m2

2.3.3.3 5400°K High luminance alignment

2.3.3.3.1 Apply VESA 1280x1024 / 60Hz , full white pattern .

2.3.3.3.2 Adjust R, G, B Gain to meet following chromaticity spec.

5400°K →x = 0.335 ±0.003, y = 0.350 ±0.003 , Y > 180 cd/m2

2.3.3.4 5000°K High luminance alignment

2.3.3.4.1 Apply VESA 1280x1024 / 60Hz , full white pattern .

2.3.3.4.2 Adjust R, G, B Gain to meet following chromaticity spec.

5000°K →x = 0.346 ±0.003, y = 0.359 ±0.003 , Y > 180 cd/m2

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2.3.4 Luminance test

2.3.4.1 Set color temperature to 9300°K

Apply VESA 1280x1024/60Hz , apply full white pattern, adjust

OSD Brightness = 100%, Contrast = 70%.

1. The luminance measure should be over 150 cd/m2

2.3.4.2 Set color temperature to 6500°K

Apply VESA 1280x1024 / 60Hz, apply full white pattern, adjust

OSD Brightness = 100%, Contrast = 70%

1. The brightness measure should be over 190 cd/m2

2. OSD Brightness = 100%, Contrast = 100%, The brightness measure should be over

200cd/m2.

2.3.4.3 Set color temperature to 5400°K

Apply VESA 1280x1024 / 60Hz , apply full white pattern, adjust

OSD Brightness = 100%, Contrast = 70%

1. The brightness measure should be over 180 cd/m2

2.3.4.4 Set color temperature to 5000°K

Apply VESA 1280x1024 / 60Hz , apply full white pattern, adjust

OSD Brightness = 100%, Contrast = 70%

1. The brightness measure should be over 180 cd/m2

2.3.4.5 Apply VESA 1280x1024/60Hz, apply full white pattern, adjust

OSD Brightness 100%, Contrast 70% ,

Measurement at center of screen

Mode X y Y

9300°K 0.283±0.010

(Default)

0.298 ±0.010

(Default) OVER 150 cd/m2(Brightness 100%, Contrast 70%)

6500°K 0.313 ±0.010

(Default)

0.329 ±0.010

(Default) OVER 190 cd/m2 (Brightness 100%, Contrast 70%)

5400°K 0.335 ±0.010

(Default)

0.350 ±0.010

(Default) OVER 180 cd/m2 (Brightness 100%, Contrast 70%)

5000°K 0.346 ±0.010

(Default)

0.359 ±0.010

(Default) OVER 180 cd/m2 (Brightness 100%, Contrast 70%)

User mode

(R, G, B

Max.)

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2.4. Key function define

Hot Key

Key

“Volume –“

Key

“Volume +” Key “1”

Key

“DOWN

”

Key

“UP” Key “2” power functions

○○

○Factory mode

○○

○Burn in off

○○○Burn in on

○○○All mode recall

○○

Lock(Unlock)

Power Key

○○

Lock(Unlock)

Osd Key

○○

○Read EDID

○○○ISP

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2.5 EDID Serial No. format

2.5.1 EDID for VG810s

2.5.1.1 Analog EDID

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 18 BF 01 01 01 01 01 0D 01 03

20 0E 24 1D 78 2E 0A 25 A2 57 4B

30 99 24 18 50 54 BF EF 80 81 80

40 81 40 71 4F 01 01 01 01 01 01

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

60 2A 40 30 70 13 00 67 1F 11 00

70 00 1E 00 00 00 FF 00 41 32 5A

80 30 33 30 31 30 30 30 30 31 0A

90 00 00 00 FD 00 32 4B 1E 52 0E

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

110 00 FC 00 56 47 38 31 30 73 0A

120 20 20 20 20 20 20 00 F0

2.5.1.2 Digital EDID:

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 18 BF 01 01 01 01 01 0D 01 03

20 80 24 1D 78 2E 0A 25 A2 57 4B

30 99 24 18 50 54 BF EF 80 81 80

40 81 40 71 4F 31 0A 01 01 01 01

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

60 2A 40 30 70 13 00 67 1F 11 00

70 00 1E 00 00 00 FF 00 41 32 5A

80 30 33 30 31 30 30 30 30 31 0A

90 00 00 00 FD 00 32 4B 1E 52 0E

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

110 00 FC 00 56 47 38 31 30 73 0A

120 20 20 20 20 20 20 00 45

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