Viewsonic VA2012W-1, VA2012WB-1 Service Manual

Service Manual

ViewSonic VA2012w

VA2012wb

Model No. VS10859

20” Color TFT LCD Display

ViewSonic

(VA2012w_VA2012wb_SM Rev. 1a Nov. 2005)



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

Copyright

¤

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.

ECR Number

1a 11/29/05

Revision History

Description of Changes

Initial Release

EditorRevision SM Editing Date

BonnieT.

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TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Exploded Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

1

5

12 14

25 51

54

60 64 65

72

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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) Use only a high quality, safety approved AC/DC power cord. (5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time. (6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off. (7) Do not touch the LCD panel surface with sharp or hard objects. (8) Do not place heavy objects on the LCD display, video cable, or power cord. (9) Do not use abrasive cleaners, waxes or solvents for your cleaning. (10) Do not operate the product under the following conditions:

- Extremely hot, cold or humid environment.

- Areas containing excessive dust and dirt.

- Near any appliance generating a strong magnetic field.

- 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. LCD Module Handling Precautions

4.1 Handling Precautions

(1) Since front polarizer is easily damaged, pay attention not to scratch it. (2) Be sure to turn off power supply when connecting or disconnecting input connector. (3) Wipe off water drops 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 ensure human earth when handling. (7) Do not open or modify the Module Assembly. (8) Do not press the reflector sheet at the back of the module in any direction. (9) In the event that a Module must be put back into the packing container slot after it was taken out of 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 or tilt the Interface

Connector of the TFT Module.

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(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or

bend the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.

(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local

ordinances or regulations for disposal.

(13) The LCD module contains a small amount of materials having no flammability grade. The LCD module

should be supplied with power that complies with the requirements of Limited Power Source (IEC60950 or UL1950), or an exemption should be applied for.

(14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950

or UL1950). Do not connect the CCFL to a Hazardous Voltage Circuit.

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VA2012w series handling Notice

Correct Method Incorrect method

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Correct Method Incorrect method

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2. Specificationtion

GENERAL specification

Test Resolution & Frequency “1680 X 1050” @ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls

Factory Default:

Contrast = 70%, Brightness = 100%

VIDEO INTERFACE

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

Digital Input Connector DVI-D (Digital), refer the appendix B

Default Input Connector Defaults to the first detected input

Equal to twice the weight of the monitor for

Video Cable Strain Relief

five minutes

Video Cable Connector DB-15 Pin out Compliant DDC 1/2B

1. Video RGB (Analog)

Video Signals

Separate

2. TMDS (Digital)

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 1/2B Compliant with Revision 1.3

Sync Compatibility Separate Sync

Shall be compatible with all PC type

Video Compatibility

computers, Macintosh computers, and after

market video cards

640 x 350, 640 x 480, 720 x 400 (640 x

400), 800 x 600, 832 x 624, 1024 x 768,

Resolution Compatibility

1280 x 720, 1280 x 1024, 1600 x 1200,

1680 x 1050

Exclusions Not compatible with interlaced video

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POWER SUPPLY

Internal Power Supply Part Number: EADP-64CF

Input Voltage Range 90 TO 264 VAC

Input Frequency Range 47.5 TO 63 HERTZ

Short Circuit Protection Output can be shorted without damage

Over Current Protection Output current <10A

Leakage Current 3.5mA (Max) at 254VAC / 60Hz

EFFICIENCY 80 % typical at 115VAC Full Load

Fuse Internal and not user replaceable

Power Dissipation 64 Watts (typ)

Max Input AC Current 1.5 Arms @ 90VAC

INRUSH CURRENT (COLD START) 80 A(max) @230VAC

Shall start and function properly when under

Power Supply Cold Start

Power Supply Transient Immunity

Power Supply Line Surge Immunity

Power Supply Missing Cycle Immunity

Power Supply Acoustics

full load, with all combinations of input

voltage, input frequency, and operating

temperature

Shall be able to withstand an ANSI/IEEE

C62.41-1980 6000V 200 ampere ring wave

transient test with no damage

Shall be able to withstand 1.5 times nominal

line voltage for one cycle with no damage

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 defined 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.

US Type Power Cable

Length = 1.8m. Connects to AC/DC Power

Adapter. Color = Black

Schuko CEE7-7. Length = 1.8m, Connects

European Type Power Cable

to AC outlet. Color = Black

Power Saving Operation(Method) VESA DPMS Signaling

ON Mode < 50 W (max) / 47 W (typ)

Power Consumption

ACTIVE OFF < 2W

Recovery Time ON MODE = N/A, ACTIVE OFF < 3 SEC

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ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency ANALOG: 30 – 94 KHZ

DIGITAL : 30-82 KHZ

Vertical Refresh Rate 50 – 75 HZ.

Maximum Pixel Clock Analog: 205 Mhz

Digital: 165 MHz

Sync Polarity Independent of sync polarity.

Timing Table

Item Timing Analog Digital

1. 640 x 350 @ 70Hz, 31.5kHz Yes Yes

2. 640 x 400 @ 70Hz, 31.5kHz Yes Yes

3. 640 x 480 @ 60Hz, 31.5kHz Yes Yes

4. 640 x 480 @ 67Hz, 35.0kHz Yes Yes

5. 640 x 480 @ 72Hz, 37.9kHz Yes Yes

6. 640 x 480 @ 75Hz, 37.5kHz Yes Yes

7. 720 x 400 @ 70Hz, 31.5kHz Yes Yes

8.

9.

10.

720 x 480i 59.94/60Hz @ 15.7 kHz

720 x 576p 50Hz @ 31.25kHz

720 x 576i 50Hz @ 15.62kHz

Yes Yes

11. 800 x 600 @ 56Hz, 35.1kHz Yes Yes

12. 800 x 600 @ 60Hz, 37.9kHz Yes Yes

13. 800 x 600 @ 75Hz, 46.9kHz Yes Yes

14. 800 x 600 @ 72Hz, 48.1kHz Yes Yes

15. 832 x 624 @ 75Hz, 49.7kHz Yes Yes

16. 1024 x 768 @ 60Hz, 48.4kHz Yes Yes

17. 1024 x 768 @ 70Hz, 56.5kHz Yes Yes

18. 1024 x 768 @ 72Hz, 58.1kHz Yes Yes

19. 1024 x 768 @ 75Hz, 60.0kHz Yes Yes

20.

1280x720p 50Hz @ 37.5kHz

Yes Yes

21. 1280x 720 @ 60Hz, 45kHz Yes Yes

22. 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes

23. 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes

24. 1600 x 1200 @ 60Hz, 75kHz Yes Yes

25. 1600 x 1200 @ 70Hz, 87.5kkHz Yes No

26. 1600 x 1200 @ 75Hz, 93.8kHz Yes No

27. 1680 x 1050 @ 60Hz, 65.3 kHz Yes Yes

28. 1680 x 1050 @ 75Hz, 82.3 kHz Yes No

29. 1920 x 1080i @ 50Hz, 56.5kHz Yes Yes

30. 1920 x 1080p @ 50Hz, 62.5kHz Yes Yes

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Primary Presets

“1680 x 1050” @ 60Hz

User Presets

Number of User Presets (recognized timings) Available: 10 presets total in FIFO

configuration

Changing Modes

● Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding

“Auto Adjust” time

● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting

when execute “Auto Adjust”

● The monitor needs to do “Auto Adjust” the first time a new mode is detected

(see section “0-Touch™ Function Actions”)

● While running Change Mode, Auto Adjust or Memory Recall, the image shall blank

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TFT LCD PANEL

Panel Source Identify

(1) ID label - The panel code “Q” for QDI panel and “T” for Hannstar panel should be

shown on the lower right side of ID label.

(2) UPC label - The panel code “Q” for QDI panel and “T” for Hannstar panel should be

shown on the lower right side of UPC label.

(3) Main board - The panel code “Q” for QDI panel and “T” for Hannstar panel should be

shown on the main board by F/W version sticker or silkscreen.

Panel Characteristics :

1st Source Panel e

QDI QD20AL01

Type TN Technology”

Active Size 433.44 (H) x 270.9 (V)

Pixel Arrangement RGB Vertical Stripe

Pixel Pitch 0.258 mm

GLASS TREATMENT Anti Glare (Hard coating 3H)

# OF BACKLIGHTS 6 CCFL edge-light (3 top / 3 bottom)

BACKLIGHT LIFE 40,000 Hours (Min)

Luminance –

Condition:

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

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

CT = 6500K, Contrast = Max,

Brightness = Max

Brightness Uniformity 77 % Entire Area (typ)

Contrast Ratio 600:1 (Typ), 400:1 (Min)

Color Depth 16.2 million colors (6 bit panel)

Viewing Angle (Horizontal) 140 deg @ CR>10, ??? deg @ CR>5

VIEWING ANGLE (VERTICAL) 125 deg @ CR>10, ??? deg @ CR>5

Response Time

10%-90% @ Ta=25°C

8 ms (Tr= 2 ms, Tf = 6 ms) (Typ)

16 ms (Tr= XXX ms, Tf = XXX ms) (Max)

Panel Defects Please see Panel Quality Specifications.

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IMAGE PERFORMANCE

Factory Defaults

Item Defaults Item Defaults

Contrast 70% Sharpness 1

Brightness 100% OSD H. Position 50%

Volume 50% OSD V. Position 50%

Balance 50% OSD Time Out 15 Sec

Bass 50% OSD Background On

Treble 50% OSD PIVOT Off

Color Temperature 6500K Resolution Notice Enabled

720x400/640x400 720x400

Display Size

Horizontal Display Size, Primary Preset Full Screen

Vertical Display Size, Primary Preset Full Screen

Preset Color Temperatures

SRGB It should meet IEC 61966-2-1 (1999-10) standard

Preset 1 9300K

CCT (Max) = 10250K.

CCT (Min) = 8500K

Preset 2 6500K (Primary)

CCT (Max) = 6950K

CCT (Min) = 6100K

Preset 3 5400K

CCT (Max) = 5915K

CCT (Min) = 4935K

Preset Color Temperature

Adjustability

Wx= 0.283 +/- 0.02,

Wy= 0.298 +/- 0.02

Wx= 0.313 +/- 0.02

Wy= 0.329 +/- 0.02

Wx= 0.335 +/- 0.02

Wy= 0.350 +/- 0.02

Each color preset shall be adjustable. Red, Green,

and Blue shall be individually controlled.

Video Cards Compatibility

Peaking Performance : Peaking is not adjustable

Raster Artifacts

● Video Artifacts : No visible streaking, sag, or smearing artifacts when driven by the

specified video cards in the primary mode and after user adjustment to best condition

● Power Supply, and Grounding Artifacts : No visible artifacts in any specified video

mode within the horizontal or vertical frequency range of the monitor

● Temperature Drift : Image shall not drift or lose fine-tune adjustment

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MECHANICAL

Dimension (Desktop)

Width 479 mm

Height 423 mm

Depth 216 mm

Monitor Weight 5.5 kg / 12.1 lbs

Dimension (Head Only / Wall Mount)

Width 479 mm

Height 350.5 mm

Depth 62.7 mm

Monitor Weight 4.9 kg / 10.78 lbs

Ergonomics

Tilt Up 20 degrees minimum

Tilt Down -5 degrees

Swivel Right N/A

Swivel Left N/A

Vibration Test

● Vibration Frequency : 1 – 200 Hz

● Acceleration : 1.14 G RMS

● Sweep Time : 1 oct. / min

● Test Time : 60 min per axis, total 3 axis / 6 main face

● Vibration Test Data shall be submitted for approval to ViewSonic before Mass

Production

Drop Test (100G)

● Weak Corner : 76.2 cm

● Six Faces : 76.2 cm

● 3 Edges Radiating From Weak Corner : 76.2 cm

● Drop Test Data shall be submitted for approval to ViewSonic before Mass Production

4-11 ENVIRONMENTAL

● Operating Temperature : 0°C to +40°C

● Storage Temperature : -20°C to +60°C

● Operating Relative Humidity : 20% to 90% RH Non-Condensing

● Storage Relative Humidity : 5% to 90% RH Non-Condensing

● Operating Altitude : 0 to +3,000 meters

● Storage Altitude : 0 to +12,000 meters

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3. Front Panel Function Control Description

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Main Menu Controls

Adjust the menu items shown below by using the up and down buttons.

A. Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion. Press the [2]

button to obtain a sharper image.

NOTE: Auto Image Adjust works with most common video cards. If this function does not work on your LCD display, then

lower the video refresh rate to 60 Hz and set the resolution to its pre-set value.

B. Contrast adjusts the difference between the image background (black level) and the foreground (white level).

C. Brightness adjusts the lamps current to control the screen brightness.

D. Input adjusts the Analogue or the Digital input source

E. Audio Adjust the volume increase or decrease and mute function

F. Color Adjust

green (G), and blue (B). The factory setting for this product is 6500K (6500° Kelvin).

9300K — Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting).

5400K — Adds red to the screen image for warmer white and richer red.

Custom User Color — Individual adjustments for red, green, and blue.

1 To select color (R, G or B) press button [2].

2 To adjust selected color, press or .

3 When you are finished making all color adjustments, press button [1] twice.

provides several color options: preset color temperatures and Custom User Color which allows you to adjust red (R),

G. Information displays the timing mode (video signal input) coming from the graphics card in your computer. See your graphic

card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency). VESA 1280 x 1024 @ 60 Hz

(recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz.

H. Manual Image Adjust

H. Size (Horizontal Size) adjusts the width of the screen image.

NOTE: Vertical size is automatic with your LCD display.

H./V. Position adjusts horizontal and vertical position of the screen image. You can toggle between Horizontal and Vertical by

pressing button [2]. Horizontal moves the screen image to the left or to the right. Vertical moves the screen image up and down.

Fine Tune sharpens focus by aligning the illuminated text and/or graphic characters.

Sharpness adjusts the clarity and focus of the screen image.

Setup Menu controls are explained below:

Language allows you to choose the language used in the menus and control screens.

Resolution Notice displays the recommended resolution for this LCD display.

Enable allows the Resolution Notice to appear on-screen.

Disable will not allow the Resolution Notice to appear on-screen.

OSD Timeout sets the length of time an on-screen display screen is displayed. For example, with a“15 second” setting, if a

I. OSD Position allows you to move the on-screen display menus and control screens.

J. Memory Recall

in this user guide.

controls are explained below:

control is not pushed within 15 seconds, the display OSD disappears.

returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed

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4. Circuit Description

1. Outline

1.1 Power On/Off, (2) Enter button, up arrow button, down arrow button, (1) MENU button, Volume “+” button,

Volume “-“button and Mute button on the front panel.

1.2 D-sub 15pin connector, DVI-D connector, audio line-in receptacle, and AC-IN are located on the back side

of the cabinet.

1.3 OSD menu includes the following function;

Auto Image Adjust (only active under analog input)

Contrast/Brightness

Input Select

Audio Adjust

Color Adjust

Information

Manual Image Adjust

Setup Menu

Memory Recall

1.4 Contrast and Brightness can be directly controlled with UP / DOWN key.

1.5 Audio volume can be controlled with Volume “+” key ,Volume “-“ key and UP/DN key when Audio Adjust

1

11

1

5

4

3

2

6

2

7

3

8

4

9

12

13

14

5

15

10

CN6

DB15HD

17

PIN MNEMONI SIGNAL

1 RV Red Video

2 GV Green Video

3 BV Blue Video

4 NC None

5 GND Ground (DDC

return)

6 RG Red GND

7 GG Green GND

8 BG Blue GND

9 +5V +5V (for DDC)

10 SG Sync GND

11 NC None

12 SDA DDC Data

13 HS Horizontal Sync

14 VS Vertical Sync

15 SCL DDC Clock

menu is active.

Pushing Mute key can disable audio output.

1.6

2. CONNECTORS

2.1 AC inlet : CEE22 typed connector

2.2 Audio : Line-in,

CN9

Line-in receptacle

(Line-in receptacle is green)

2.3 Video signal connector for analog input: 15P Mini D-Sub

16

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Video signal connector for digital input: 24pin DVI-D connector

2.4

CN9

Pin No. Signal Name Description

1 RX2- TMDS negative differential input, channel 2

1

RX2-

RX2+

GND

RX4-

RX4+

SCL

SDA

VS

RX1-

RX1+

GND

RX3-

RX3+

5V

GND

HP

RX0-

RX0+

GND

RX5-

RX5+

GND

RXC+

RXC-

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

2 RX2+ TMDS positive differential input, channel 2

3 GND Logic Ground

4 RX4- Reserved. No connection

5 RX4+ Reserved. No connection

6 SCL DDC2B Clock

7 SDA DDC2B Data

8 VS Reserved. No connection

9 RX1- TMDS negative differential input, channel 1

10 RX1+ TMDS positive differential input, channel 1

11 GND Logic Ground

12 RX3- Reserved. No connection

13 RX3+ Reserved. No connection

14 +5V Power

15 GND Logic Ground

16 HP SENSE Pin, Pull High

17 RX0- TMDS negative differential input, channel 0

DVI-D

18 RX0+ TMDS positive differential input, channel 0

19 GND Logic Ground

20 RX5- Reserved. No connection

21 RX5+ Reserved. No connection

22 GND Logic Ground

23 RXC+ TMDS positive differential input, reference clock

24 RXC- TMDS negative differential input, reference clock

3. ELECTRICAL SPECIFICATIONS

3.1 Standard conditions

Display Area

Video Signal

Contrast

Brightness

Ambient

Input

Warming up

Display

433.44 x 270.9 mm

0.7Vpp

Default

20 +/- 5 °C

AC

> 30 min

1680 x 1050

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3.2 POWER

3.2.1 Power supply

Input voltage 100~240Vac

Power frequency 50~60Hz

Input current

Inrush current

Power consumption 47W(typical);50Watts(Max)

3.2.2 Power Management

State Power Indicator

On 47Watts Blue

Standby < 2Watts Amber

Off <2Watts Off

<1.5Arms@90Vac

80A(Max) at 230Vac(cold start)

3.3 Acceptable timing

If the timing is within following specification, this LCD display can automatically function with a certain

position.

Horizontal: Sync frequency: 30~94 KHz (Analog), 30~82KHz (Digital)

Vertical: Sync frequency: 50~75*Hz

3.4 Signal level and input impedance

3.4.1 Video Signal level: 0.7Vp-p Video signal.

3.4.2 Sync Signal level

H/V Separate: TTL level

3.4.3 Input impedance

Analog video input: 75 ohm

Digital video input: 100 ohm

Sync input: > 1 k ohm

Audio input: 10K ohm

4. SIGNAL CABLE: Signal cable with Mini D-Sub 15P connectors at both ends. Length: 1.8 meter.

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5. EDID data

5.1. Analog EDID: Analog EDID is stored in IC4

VA2012wb Analog:

Time: 08:44:23

Date: Wed Sep 07, 2005

______________________________________________________________________

VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VA2012wSERIES

______________________________________________________________________

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 | 1C 6A 01 01 01 01 01 0F 01 03

20 | 08 2B 1B 78 2E C3 15 A6 56 4A

30 | 9B 24 16 50 54 BF EF 80 B3 0F

40 | A9 40 90 40 90 4F 81 80 81 40

50 | 71 4F A9 4F 21 39 90 30 62 1A

60 | 27 40 68 B0 36 00 B1 0F 11 00

70 | 00 1C 00 00 00 FF 00 50 56 57

80 | 30 35 30 31 30 30 30 30 31 0A

90 | 00 00 00 FD 00 32 4B 1E 5E 15

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

110 | 00 FC 00 56 41 32 30 31 32 77

120 | 53 45 52 49 45 53 00 BA

______________________________________________________________________

(08-09) ID Manufacturer Name ________________ = VSC

(11-10) Product ID Code _____________________ = 6A1C

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

(16) Week of Manufacture _________________ = 01

(17) Year of Manufacture _________________ = 2005

(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, 0.300 (1.000 Vp-p)

Separate Syncs

(21) Maximum Horizontal Image Size ________________ = 430 mm

(22) Maximum Vertical Image Size __________________ = 270 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

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Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.651 Green X - 0.289 Blue X - 0.141 White X - 0.313

Red Y - 0.336 Green Y - 0.608 Blue Y - 0.087 White Y - 0.329

(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:

1680 X 1050 @75Hz

1600 X 1200 @60Hz

1400 X 1050 @60Hz

1400 X 1050 @75Hz

1280 X 1024 @60Hz

1280 X 960 @60Hz

1152 X 864 @75Hz

1600 X 1200 @75Hz

______________________________________________________________________

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

1680x1050 Pixel Clock: 146.25 MHz

______________________________________________________________________

Horizontal Image Size: 433 mm Vertical Image Size: 271 mm

Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

Active Time: 1680 pixels Blanking Time: 560 pixels

Sync Offset: 104 pixels Sync Pulse Width: 176 pixels

Border: 0 pixels Frequency: 65.29 KHz

Vertical:

Active Time: 1050 lines Blanking Time: 39 lines

Sync Offset: 3 lines Sync Pulse Width: 6 lines

Border: 0 lines Frequency: 59.95 Hz

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

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______________________________________________________________________

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

Monitor Serial Number:

PVW050100001

______________________________________________________________________

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

Monitor Range Limits:

Min Vertical Freq - 50 Hz

Max Vertical Freq - 75 Hz

Min Horiz. Freq - 30 KHz

Max Horiz. Freq - 94 KHz

Pixel Clock - 210 MHz

Secondary GTF - Not Supported

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

Monitor Name:

VA2012wSERIES

(126) No Extension EDID Block(s)

(127) CheckSum OK

5.2. Digital EDID: Digital EDID is stored in IC4.

Appendix F : Digital EDID

VA2012wb

Time: 08:45:59

Date: Wed Sep 07, 2005

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VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VA2012wSERIES

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EDID Block 0, Bytes 0-127

128 BYTES OF EDID CODE:

0 1 2 3 4 5 6 7 8 9

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

10 | 1C 6A 01 01 01 01 01 0F 01 03

20 | 80 2B 1B 78 2E C3 15 A6 56 4A

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30 | 9B 24 16 50 54 BF EF 80 B3 0F

40 | A9 40 90 4F 90 40 81 80 81 40

50 | 71 4F 31 0A 21 39 90 30 62 1A

60 | 27 40 68 B0 36 00 B1 0F 11 00

70 | 00 1C 00 00 00 FF 00 50 56 57

80 | 30 35 30 31 30 30 30 30 31 0A

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

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

110 | 00 FC 00 56 41 32 30 31 32 77

120 | 53 45 52 49 45 53 01 0E

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(08-09) ID Manufacturer Name ________________ = VSC

(11-10) Product ID Code _____________________ = 6A1C

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

(16) Week of Manufacture _________________ = 01

(17) Year of Manufacture _________________ = 2005

(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 ________________ = 430 mm

(22) Maximum Vertical Image Size __________________ = 270 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 - 0.651 Green X - 0.289 Blue X - 0.141 White X - 0.313

Red Y - 0.336 Green Y - 0.608 Blue Y - 0.087 White Y - 0.329

(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)

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(37) Manufacturer's Reserved Timing:

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

(38-53) Standard Timing Identification:

1680 X 1050 @75Hz

1600 X 1200 @60Hz

1400 X 1050 @75Hz

1400 X 1050 @60Hz

1280 X 1024 @60Hz

1280 X 960 @60Hz

1152 X 864 @75Hz

640 X 400 @70Hz

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

1680x1050 Pixel Clock: 146.25 MHz

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Horizontal Image Size: 433 mm Vertical Image Size: 271 mm

Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

Active Time: 1680 pixels Blanking Time: 560 pixels

Sync Offset: 104 pixels Sync Pulse Width: 176 pixels

Border: 0 pixels Frequency: 65.29 KHz

Vertical:

Active Time: 1050 lines Blanking Time: 39 lines

Sync Offset: 3 lines Sync Pulse Width: 6 lines

Border: 0 lines Frequency: 59.95 Hz

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

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

Monitor Serial Number:

PVW050100001

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

Monitor Range Limits:

Min Vertical Freq - 50 Hz

Max Vertical Freq - 75 Hz

Min Horiz. Freq - 30 KHz

Max Horiz. Freq - 82 KHz

Pixel Clock - 170 MHz

Secondary GTF - Not Supported

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Viewsonic VA2012W-1, VA2012WB-1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual