ViewSonic VA2012wb-1 User manual

ViewSonic VA2012w-1
VA2012wb-1
Model No. VS10859
20” Color TFT LCD Display
(VA2012w-1_VA2012wb-1_SM Rev. 1b Jun. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA- [phone]
Service Manual

Copyright
Copyright © 2006 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
Opt quest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
1a 11/09/05 Initial Release G. Han
1b 06/19/2006 VS-E060102 J. Chang
Add 2nd source panel AUO M201EW01 v.0
(updated RSPL/BOM/EPL)
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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 5
3. Front Panel Function Control Description 12
4. Circuit Description 14
5. Adjustment Procedure 25
6. Troubleshooting Flow Chart 50
7. Recommended Spare Parts List 53
8. Exploded Diagram and Exploded Parts List 55
9. Block Diagram 59
10. Schematic Diagrams 60
11. PCB Layout Diagrams 67

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. LCDModule 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 CMOSLSI isusedinthis 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.
1. Precautions and Safety Notices
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(11) After installation of theTFT Module intoan enclosure(LCDmonitor 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 theTFT 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 fordisposal.
(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 theCCFL to a HazardousVoltage Circuit.
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Take out the monitor with cushion
correct method
Place the monitor on a clean & soft foam pad
Surface of the panel is pressed by fingers &
this may cause “ MURA “
Do not touch the surface of the polarizer .
incorrect method
Take out the monitor by grasping the LCD
panel. That may cause “ MURA“.
could
scratch the surface of panel
Handing and Placing Methods
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when assemble&disassembly
bezel
when assemble&disassembly
bezel
when assemble&disassembly
bracket
when assemble&disassembly
bracket
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2. Specificationtion
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INTRODUCTION
FEATURES VA2012w/wb-1
Size 20.1” WIDE
Luminance (Typ/Min) 300 / 240 cd/㎡
Contrast Ratio (Typ/Min) 600:1 / 400:1
Colors 16.2 M colors
Response Time (Typ/Max) 8 /12 ms
Viewing Angle (H/V) 140 ° / 125 °
TFTLCD PANEL
(QDI)
Recommend resolution 1680 X 1050@60Hz
Size 20.1” WIDE
Luminance (Typ/Min) 300 / 240 cd/㎡
Contrast Ratio (Typ/Min) 800:1 / 400:1
Colors 16.7 M colors
Response Time (Typ/Max) 16 /40 ms
G to G 8ms (ave)
Viewing Angle (H/V) 176° / 176 °
TFTLCD PANEL
(AUO)
M201EW01 V.0
Recommend resolution 1680 X 1050@60Hz
Analog (75ohms, 0.7/1.0 Vp-p) Yes
Input Signal Digital Yes
Separate Sync Yes
Composite Sync No
Sync Compatibility Sync on Green No
PC Yes
Power Mac Yes
Compatibility TV Box (NextVision 6) Yes
Power Voltage AC 100-240V, 50/60Hz Yes
On Mode(Max / Typ) 50 W / 47 W
Power Consumption Active Off Mode (Max) < 2 W
Audio 1 W Yes
Tilt ( -5 ° 18 °)+/- 2 °Yes
Swivel ( -135 ° - 135 °) No
Pivot ( XX ° - XX °) No
Ergonomics
Height Adjust ( XX-XX mm) No
OSD Control [] [ 1 ] [ 2 ] [▲] [▼] [;+] [;-][;X] Yes
Physical (W x H x D) 479 x 423 x 216mm
Dimension Package (W x H x D) 540 x 505 x 175mm
Physical (lbs / Kg) 5.5 / 12.1 Kg
Weight Package (lbs / Kg) 7.0 / 15.4 Kg
Temperature ( / )℉℃ 32℉-104 / 0℉℃-40℃
Operating Condition Humidity (%) 20 % - 90 %
Temperature ( / )℉℃ -4℉-140 /℉-20℃-60℃
Storage Condition Humidity (%) 5 % - 90 %
Regulation
UL, cUL, FCC-B, CB, CE, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 &
MPRII), TCO’03, GOST-R + 20 ORIGINAL COPIES HYGIENIC, SASO, PCBC,
BSMI, CCC, (PSB), (C-TICK), TUV-S, Green Mark, Energy Star, MIC, WEEE,
RoHS,
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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
Video Cable Strain Relief Equal to twice the weight of the monitor for five
minutes
Video Cable Connector DB-15 Pin out Compliant DDC 1/2B
Video Signals 1. Video RGB (Analog) 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
Video Compatibility Shall be compatible with all PC type computers,
Macintosh computers, and after market video cards
Resolution Compatibility 640 x 350, 640 x 480, 720 x 400 (640 x 400), 800 x 600, 832 x 624, 1024 x 768, 1280 x 720, 1280 x
1024, 1600 x 1200, 1680 x 1050
Exclusions Not compatible with interlaced video
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
Power Supply Cold Start Shall start and function properly when under full load, with all combinations of input voltage, input
frequency, and operating temperature
Power Supply Transient Immunity Shall be able to withstand an ANSI/IEEE C62.41- 1980 6000V 200 ampere ring wave transient test
with no damage
Power Supply Line Surge Immunity Shall be able to withstand 1.5 times nominal line
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voltage for one cycle with no damage
Power Supply Missing Cycle Immunity Shall be able to function properly, without reset or visible screen artifacts, when ½ cycle of AC power
is randomly missing at nominal input
Power Supply Acoustics
The power supply shall not produce audible noise
that would be detectable by the user. Audible shall
defined to be in compliance with ISO 7779 (DIN
EN27779:1991) Noise measurements of machines
acoustics. Power Switch noise shall not be
considered
US Type Power Cable Separate 3-prong NEMA 5-15P type plug. Length =
1.8m. Connects to AC outlet. Color = Black
European Type Power Cable Schuko CEE7-7. Length = 1.8m, Connects to AC
outlet. Color = Black
Power Saving Operation(Method) VESA DPMS Signaling
Power Consumption ON Mode < 50 W (max) / 47 W (typ)
ACTIVE OFF < 2W
Recovery Time ON MODE = N/A, ACTIVE OFF < 3 SEC
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. 720 x 480 @59.94/60Hz 15.7 kHz Yes Yes
9. 720 x 576 @50Hz 31.25kHz Yes Yes
10. 720 x 576 @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. 1280 X 720 @ 50Hz 37.5kHz Yes Yes
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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
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
FRONT PANEL CONTROLS AND INDICATORS
Front Panel Hardware Controls
Power Switch (Front Head) Power Control, soft Power Switch.
Power LED (Front Head) Green – ON
Orange – Active Off
Dark = Soft Power Switch OFF
Front Panel Controls (Head)
[] [ 1 ] [ 2 ] [▲] [▼] [;+][;-][;X]
[] Power
[ 1 ] Button 1
[ 2 ] Button 2
[▲] Up arrow button
[▼] Down arrow button
[;+] Volume+
[;-] Volume-
[;X] Mute
Note: Power Button, Button 1, Button 2, and
Mute Button must be one-shot logic
operation. (i.e. there should be no cycling)
Reaction Time OSD must fully appear within 0.5s after
pushing Button 1
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TFT LCD PANEL
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:
CT = 6500K, Contrast = Max,
Brightness = Max
300 cd/m2 (Typ after 30 minute warm up)
240 cd/m2 (Min after 30 minute warm up)
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, 160 deg @ CR>5
VIEWING ANGLE (VERTICAL) 125 deg @ CR>10, 140 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.
2nd Source Panel AUO M201EW01 V.0
Type MVA Technology”
Active Size 433.44 (H) x 270.90(V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.258 mm
GLASS TREATMENT Anti Glare (Hard coating 3H)
# OF BACKLIGHTS 6CCFL edge-light (3 top / 3 bottom)
BACKLIGHT LIFE 50.000 Hours (Min)
Luminance –
Condition:
CT = 6500K, Contrast = Max,
Brightness = Max
300cd/m2 (Typ after 30 minute warm up)
240 cd/m2 (Min after 30 minute warm up)
Brightness Uniformity 75 % Entire Area (minimum)
Contrast Ratio 800:1 (Typ), 4001 (Min)
Color Depth 16.7 million colors (8 bit panel)
Viewing Angle (Horizontal) 176 deg (Typ), 150deg(Min) @ CR>10
VIEWING ANGLE (VERTICAL) 176 deg (Typ), 150deg(Min) @ CR>10
Response Time
10%-90% @ Ta=25°C
16ms (Tr=11 ms, Tf = 5 ms) (Typ)
40 ms (Tr= 25ms, Tf = 15ms) (Max)
G to G 8ms (Average)
Panel Defects Please see Panel Quality Specifications.
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IMAGE PERFORMANCE
Factory Defaults
Item Defaults Item Defaults
Contrast 70% OSD V. Position 50%
Brightness 100% OSD Time Out 15 Sec
Volume 50% OSD Background On
Color Temperature 6500K OSD PIVOT Off
Sharpness 1 Resolution Notice Enabled
OSD H. Position 50% 720x400/640x400 720x400
Display Size
Horizontal Display Size, Primary Preset Full Screen
Vertical Display Size, Primary Preset Full Screen
Saturation
Contrast = Default
Brightness = Default
TEST PATTERN = 32-GRAY No visible saturation
Contrast = 100%
Brightness = 100%
Test pattern = 32-gray 6~8-level saturation
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
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IMAGE PERFORMANCE
Factory Defaults
Item Defaults Item Defaults
Contrast 70% OSD V. Position 50%
Brightness 100% OSD Time Out 15 Sec
Volume 50% OSD Background On
Color Temperature 6500K OSD PIVOT Off
Sharpness 1 Resolution Notice Enabled
OSD H. Position 50% 720x400/640x400 720x400
Display Size
Horizontal Display Size, Primary Preset Full Screen
Vertical Display Size, Primary Preset Full Screen
Saturation
Contrast = Default
Brightness = Default
TEST PATTERN = 32-GRAY No visible saturation
Contrast = 100%
Brightness = 100%
Test pattern = 32-gray 6~8-level saturation
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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 provides several color options: preset color temperatures and Custom User Color which allows you to adjust red (R),
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.
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 controls are explained below:
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.
EnableallowstheResolutionNoticetoappearon-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
control is not pushed within 15 seconds, the display OSD disappears.
I. OSD Position allows you to move the on-screen display menus and control screens.
J. Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed
in this user guide.
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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
menu is active.
1.6 Pushing Mute key can disable audio output.
2. CONNECTORS
2.1 AC inlet : CEE22 typed connector
2.2 Audio : Line-in,
CN9
2
3
4
5
1
Line-in receptacle
(Line-in receptacle is green)
2.3 Video signal connector for analog input: 15P Mini D-Sub
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
CN6
DB15HD
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
16 17
1
Line-in receptacle
(Line-in receptacle is green)
2.3 Video signal connector for analog input: 15P Mini D-Sub
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
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2.4 Video signal connector for digital input: 24pin DVI-D connector
CN9
DVI-D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
RX2-
RX2+
GND
RX4-
RX4+
SCL
SDA
VS
RX1-
RX1+
GND
RX3-
RX3+
5V
GND
HP
RX0-
RX0+
GND
RX5-
RX5+
GND
RXC+
RXC-
3. ELECTRICAL SPECIFICATIONS
3.1 Standard conditions
Display Area 433.44 x 270.9 mm
Video Signal 0.7Vpp
Contrast Default
Brightness Default
Ambient 20 +/- 5 °C
Input AC
Warming up > 30 min
Display 1680 x 1050
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 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
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
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3.2 POWER
3.2.1 Power supply
Input voltage 100~240Vac
Power frequency 50~60Hz
<1.5Arms@90Vac Input current
Inrush current 80A(Max) at 230Vac(cold start)
Power consumption 47W(typical);50Watts(Max)
3.2.2 Power Management
State Power Indicator
On 47Watts Blue
Standby < 2Watts Amber
Off <2Watts Off
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
17
ViewSonic Corporation Confidential - Do Not Copy VA2012w-1_VA2012wb-1