Viewsonic VA912-4, VA912B-4 Service Manual 1a
Service Manual
ViewSonic VA912-4
VA912b-4
Model No. VS10867
19” Color TFT LCD Display
ViewSonic
(VA912-4_VA912b-4_SM Rev. 1b Dec. 2005)
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
Copyright
Copyright
2005 by ViewSonic Corporation. All rights reserved. No part of this publication may be
¤
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.
Disclaimer
ViewSonic makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular
purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time
to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or
changes.
Trademarks
Optiquest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Revision History
ECR Number
1a
1b
11/09/05
12/01/05
Description of Changes
Initial Release
Add assembling, handling notice, packing, firmware documents
EditorRevision SM Editing Date
G. Han
Jamie Chang
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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
11
13
24
52
55
61
65
66
71
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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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VA912-4 series handling Notice
Correct Method Incorrect method
Correct Method Incorrect method
Correct Method Incorrect method
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Correct Method Incorrect method
Correct Method Incorrect method
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2. Specification
1 PRODUCT DEFINITION AND SPECIFICATION
VSA
VSAP
VSE
VSCN
Region
(M)
Product Name
(A)/(S)/(K)
(E)/(U)
VA912/b-4 / VA912-4U
(G)
Model Number VS10867
English, French, German, Italian, Spanish,
OSD Languages
Finnish, Japanese, Traditional Chinese,
Simplified Chinese
TFT LCD Panel and Model # Vendor : HSD, Model # : 190ME13 A02
Scalar Model # : RTD 2523
Input Signal Analog / Digital
Sync Compatibility Separate
Audio 1W x 2
a. Refer to Appendix D
Power Cable
b. U model: (2 power cables are required)
1. Schuko CEE7-7 Type Plug
2. Separate 3-prong BS 1363 Type Plug
Analog Cable (1.8 m, color : black), with PC
YES
2001 and Hot Plug Detect &DDC
Audio Cable (1.8m, Color: black) with PC
YES
2001
DVI Cable(1.8m, color: black) with PC 2001
ViewSonic CD Wizard
ViewSonic Quick Start Guide
Screen Protector Mylar
Warranty Sticker NO NO NO
Warranty Card NO NO NO
Carton Sticker NO NO NO
PE bag of Carton NO NO NO
YES YES No YES
Arabic, English, Finnish, Spanish, German,
Italian, Swedish, Polish, Korean, Portuguese,
Russian, French, Simplified Chinese, Traditional
Chinese, Hungary, Czech, Turkish
YES YES YES YES
YES
YES
YES
YES
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This product specification is divided into the following categories:
4-1 General Specification 4-11 Environmental
4-2 Video Interface 4-12 Manuals and Documents
4-3 Power Supply 4-13 Regulatory and Safety
4-4 Electrical Requirement 4-14 Video Communications
4-5 Front Panel Control and Indicators 4-15 Coding Assignment
4-6 Audio Interface 4-16 Reliability
4-7 TFT LCD Panel 4-17 Mass Production Release
4-8 Image Performance 4-18 ECR / ECN
4-9 Mechanical 4-19 Service
4-10 Packaging
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GENERAL specification
Test Resolution & Frequency 1280x1024 @ 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-I (digital)
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 2B
1. Video RGB (Analog)
Video Signals
2. DVI (Digital)
Separate
Video Impedance 75 Ohms (Analog)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals LVDS
DDC 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,
1152 x 870, 1280 x 720, 1280 x 960, 1280 x
Resolution Compatibility
1024
* The image vertical size might not be full screen.
But the image vertical position should be at the center.
Exclusions Not compatible with interlaced video
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POWER SUPPLY
Power Supply (Adapter) FSP043-2PI01
Input Voltage Range 90 TO 264 VAC
Input Frequency Range 47 TO 63 HERTZ
Short Circuit Protection Output can be shorted without damage
Over Current Protection 5.13 A typical at 18.1 VDC
Leakage Current 0.25mA (Max) at 264VAC / 50Hz
EFFICIENCY 80 % typical at 115VAC Full Load
Fuse Internal and not user replaceable
Power Dissipation 65 Watts
Max Input AC Current 1.8Arms @ 90VAC,
INRUSH CURRENT (COLD START) 100 A @ 240VAC , 50Hz
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 EN61000-4-4
±2KV transient test with no damage
Shall be able to withstand ±2KV (L-L) and
±2.3KV (L-PE) 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 display.
Color = Black
Schuko CEE7-7 type plug.
European Type Power Cable
Length = 1.8m, Connects to display.
Color = Black
Separate 3-prong type plug.
CCC Type Power Cable
Length = 1.8m. Connects to display.
Color = Black
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Separate 2-prong NEMA 1-15P type plug.
PSE Type Power Cable
Length = 1.8m. Connects to display.
Color = Black
Power Saving Operation(Method) VESA DPMS Signaling
ON Mode < 40W (max) / 36 W (typ)
Power Consumption
ACTIVE OFF < 1 W
Recovery Time ON MODE = N/A, ACTIVE OFF < 5 SEC
ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency 30 – 82 KHZ
Vertical Refresh Rate 50 – 85* HZ.
Maximum Pixel Clock 135 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 @ 60Hz, 31.5kHz Yes Yes
3 640 x 400 @ 70Hz, 31.5kHz Yes Yes
4 640 x 480 @ 60Hz, 31.5kHz Yes Yes
5 640 x 480 @ 67Hz, 35.0kHz Yes Yes
6 640 x 480 @ 72Hz, 37.9kHz Yes Yes
7 640 x 480 @ 75Hz, 37.5kHz Yes Yes
8 640 x 480 @ 85Hz, 43.27kHz Yes Yes
9 720 x 400 @ 70Hz, 31.5kHz Yes Yes
10 800 x 600 @ 56Hz, 35.1kHz Yes Yes
11 800 x 600 @ 60Hz, 37.9kHz Yes Yes
12 800 x 600 @ 75Hz, 46.9kHz Yes Yes
13 800 x 600 @ 72Hz, 48.1kHz Yes Yes
14 800 x 600 @ 85Hz, 53.7kHz 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 1024 x 768 @ 85Hz, 68.67kHz Yes Yes
21 1152 x 870 @ 75Hz, 68.7kHz Yes Yes
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22 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes
23 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes
24 1280x 720 @ 60Hz, 45kHz (HDTV) Yes Yes
Primary Presets
1280x1024 @ 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), there is no “Auto Adjust”
feature.
● The monitor needs to do “Auto Adjust” the first time a new mode is detected but except
the DOS mode 640 x 350, 720 x 400 & 640 x 400.(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)
[;X] [ 1 ] [▲] [▼] [ 2 ] [
]
] Power
[
[ 1 ] Button 1
[ 2 ] Button 2
[▲] Up arrow button
[▼] Down arrow button
[; X]
MUTE
Note: Power Button, Button 1 and 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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Panel Source Identify
(1) ID label - The panel code “T” for HSD panel should be shown on the lower right side
of ID label. (See Figure 2)
(2) UPC label - The panel code “T” for HSD panel should be shown on the lower right
side of UPC label. (See Figure 3)
Panel Characteristics:
Model number HSD 190ME13-A02
Type TN type with LVDS interface
Active Size 376.32 (H) x 301.056 (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.294 mm
GLASS TREATMENT Anti Glare (Hard coating 3H)
# OF BACKLIGHTS 4 CCFL direct light
BACKLIGHT LIFE 40,000 Hours (min)
Luminance (Center) –
Condition:
250 cd/m2 (Typ after 30 minute warm up)
200 cd/m2 (Min after 30 minute warm up)
CT = 6500K, Contrast = Max,
Brightness = Max
U = 80% (typ), 75% (Min).
Brightness Uniformity (9 Points)
U = Min Luminance in 5 points / Max
Luminance in 5 points
Contrast Ratio 600 (typ), 450 (min)
Color Depth 16 million colors (6 bit + 2 bit FRC)
Viewing Angle (Horizontal)
VIEWING ANGLE (VERTICAL)
Response Time
@ CR>10
Typical: 140
Minimum: 120
@ CR>10
Typical: 130
Minimum: 110
8ms (Tr= 2 ms, Tf = 6 ms) (typ)
@ CR>5
Typical: 160
Minimum: 140
@ CR>5
Typical: 150
Minimum: 130
10%-90% @ Ta=25°C
20 ms (Tr= 7 ms, Tf = 13 ms) (max)
Panel Defects Please see Panel Quality Specifications.
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MECHANICAL
Dimension (Desktop)
Width 437 mm (17.2 inch)
Height 419 mm (16.5 inch)
Depth 216 mm (8.5 inch)
Monitor Weight 4.7 Kg/ 10.4 lbs
Ergonomics
Tilt Up ≧ 20 º to 18°
Tilt Down ≦ -5 º to -3°
Vibration Test
● Vibration Frequency : 2 – 200 Hz
● Acceleration : 1.14 G RMS
● Sweep Time : 1 oct. / min
*Refer to Figure 1
● 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
ENVIRONMENTAL
● Operating Temperature : 5°C to +35°C
● Storage Temperature : -20°C to +55°C
● Operating Relative Humidity : 20% to 80% RH Non-Condensing
● Storage Relative Humidity : 20% to 85% 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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ViewSonic VA921-4/VA921b-4/VA912-4U
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
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
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”
I. OSD Position allows you to move the on-screen display menus and control screens.
J. Memory Recall
Timing Mode listed in this user guide.
provides several color options: preset color temperatures and Custom User Color which allows you to
controls are explained below:
setting, if a 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
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4. Circuit Description
1. Outline
1.1 Power On/Off, up arrow- button, down arrow button, (1) MENU button, (2) Enter button, 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 up key and down key when Audio Adjust 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
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
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15
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
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376.32 x 301.056 mm
0.7Vpp
Default
Default
20 +/- 5 °C
AC
> 30 min
1280 x 1024
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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 36W(typical);40Watts(Max)
3.2.2 Power Management
State Power Indicator
On 36Watts Blue
Standby < 1Watts Amber
<1.8Arms@90Vac
100A(Max) at 90Vac(cold start)
Off <1Watts 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: 30~82 kHz
Vertical: Sync frequency: 50~85*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 U8.
Time: 15:03:33
Date: Fri Aug 05, 2005
______________________________________________________________________
______________________________________________________________________
VIEWSONIC CORPORATION
EDID Version # 1, Revision # 3
DDCTest For: ViewSonic VA912-4SERIES
______________________________________________________________________
______________________________________________________________________
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 72 00 00 00 00 01 0F 01 03
20 | 08 26 1E 78 2E FD 56 A5 53 4A
30 | 9D 24 14 4F 54 BF EF 80 81 80
40 | 81 40 71 4F 61 59 45 59 31 59
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 78 2D 11 00
70 | 00 1E 00 00 00 FF 00 50 57 38
80 | 30 35 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 55 1E 52 0E
100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 41 39 31 32 2D 34
120 | 53 45 52 49 45 53 00 18
______________________________________________________________________
(08-09) ID Manufacturer Name ________________ = VSC
(11-10) Product ID Code _____________________ = 721C
(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 ________________ = 380 mm
(22) Maximum Vertical Image Size __________________ = 300 mm
(23) Display Gamma ________________________________ = 2.20
(24) Power Management and Supported Feature(s):
Active Off/Very Low Power, Standard Default Color Space,
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Preferred Timing Mode
Display Type = R/G/B Color
(25-34) CHROMA INFO:
Red X - 0.647 Green X - 0.292 Blue X - 0.142 White X - 0.310
Red Y - 0.327 Green Y - 0.614 Blue Y - 0.079 White Y - 0.330
(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:
1280 X 1024 @60Hz
1280 X 960 @60Hz
1152 X 864 @75Hz
1024 X 768 @85Hz
800 X 600 @85Hz
640 X 480 @85Hz
Not Used
Not Used
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(54-71) Detailed Timing / Descriptor Block 1:
1280x1024 Pixel Clock: 108.00 MHz
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Horizontal Image Size: 376 mm Vertical Image Size: 301 mm
Refreshed Mode: Non-Interlaced Normal Display - No Stereo
Horizontal:
Active Time: 1280 pixels Blanking Time: 408 pixels
Sync Offset: 48 pixels Sync Pulse Width: 112 pixels
Border: 0 pixels Frequency: 63.98 KHz
Ver t i c al:
Active Time: 1024 lines Blanking Time: 42 lines
Sync Offset: 1 lines Sync Pulse Width: 3 lines
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Border: 0 lines Frequency: 60.02 Hz
Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)
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(72-89) Detailed Timing / Descriptor Block 2:
Monitor Serial Number:
PW8050100001
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(90-107) Detailed Timing / Descriptor Block 3:
Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 85 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 140 MHz
Secondary GTF - Not Supported
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(108-125) Detailed Timing / Descriptor Block 4:
Monitor Name:
VA912-4SERIES
(126) No Extension EDID Block(s)
(127) CheckSum OK
5.2. Digital EDID: Digital EDID is stored in U5.
Time: 15:02:23
Date: Fri Aug 05, 2005
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VIEWSONIC CORPORATION
EDID Version # 1, Revision # 3
DDCTest For: ViewSonic VA912-4SERIES
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EDID Block 0, Bytes 0-127
128 BYTES OF EDID CODE:
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