ViewSonic VE710b-1 User manual

Model No. VLCDS27998-2W/-1W
17” Color TFT LCD Display
Service Manual
ViewSonic VE710b/s-1
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
(VE710b/s-1_SM_736 Rev. 1c Apr. 2005)

Copyright
Copyright
¤
2005by ViewSonic Corporation. All rights reserved. No partof 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.
Revision History
1a
Initial Release A. Lu
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.
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DCN Number ECR Number
Documents Number Description of Changes EditorRevision SM Editing Date
25/12/03
3742
1b
06/07/04
4342
To solve CPT panel shortage,
phase in QDI panel as the 2nd source A .Lu
4527
1c04/19/05 5218 A .Lu
5244 Panel change from QDI QD17EL07 REV.03 25ms
to QD17EL0709 8ms

TABLE OF CONTENTS
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
6. Troubleshooting Flow Chart
9. Block Diagram
10. Schematic Diagrams
7. Recommended Spare Parts List
1. Precautions and Safety Notices
5. Adjustment Procedure
8. Exploded Diagram and Exploded Parts List
11. PCB Layout Diagrams
1
5
8
14
24
43
45
52
61
63
69
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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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Correct methods : Incorrect Methods :
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5. Handling Methods
Only touch the metal frame of the panel or the front
cover of the monitor.
Do not touch the surface of the polarizer .
If the surface of the panel is pressed by fingers, this
may cause "MURA."
Take out the monitor by grasping the cushion. If the monitor is removed by grasping the LCD
panel, that may cause "MURA."

Correct methods : Incorrect Methods :
Place the monitor on a clean & soft foam pad .
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If the monitor is placed on foreign objects,
that could scratch the surface of the panel.

•General Specifications
Test Resolution & Frequency 1280 x 1024 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls Factory Default: Contrast = 70%, Brightness =
100%
•Video Interface
Analog Input Connector DB-15 (Analog)
Video Cable Strain Relief Equal to twice the weight of the monitor for five
minutes.
Video Cable Connector DB-15 Pinout Compliant DDC 2B.
Video Signals Video RGB (Analog)
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 TTL
DDC 1/2B Compliant with Revision 1.3
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
Exclusions Not compatible with interlaced video.
•Power Supply
Internal Power Supply Part Number: ADP-40AFB
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 4.5 A typical at 12 VDC
Leakage Current 3.5mA (Max) at 254VAC / 60Hz
EFFICIENCY 70 % typical at 115VAC Full Load
Fuse Internal and not user replaceable
Power Dissipation 35 Watts (typ)
Max Input AC Current 1.2 Arms @ 90VAC, 0.8 Arms @180VAC
2. Specification
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•Horizontal / Vertical Frequency
Horizontal Frequency 30 – 80 KHZ
Vertical Refresh Rate 50 –85 HZ.
Maximum Pixel Clock 135 MHz
Sync Polarity Independent of sync polarity.
Primary Presets
Primary Preset 1280 x 1024 @ 60Hz
Look up table timing
<<Analog>>
1. 640 x 350 @ 70Hz, 31.5kHz
2. 640 x 480 @ 60Hz, 31.5kHz
3. 640 x 480 @ 67Hz, 35.0kHz
4. 640 x 480 @ 75Hz, 37.5kHz
5. 640 x 480 @ 72Hz, 37.9kHz
6. 640 x 480 @ 85Hz, 43.27kHz
7. 720 x 400 @ 70Hz, 31.5kHz
8. 800 x 600 @ 56Hz, 35.1kHz
9. 800 x 600 @ 60Hz, 37.9kHz
10. 800 x 600 @ 75Hz, 46.9kHz
11. 800 x 600 @ 72Hz, 48.1kHz
12. 800 x 600 @ 85Hz, 53.7kHz
13. 832 x 624 @ 75Hz, 49.7kHz
14. 1024 x 768 @ 60Hz, 48.4kHz
15. 1024 x 768 @ 70Hz, 56.5kHz
16. 1024 x 768 @ 72Hz, 58.1kHz
17. 1024 x 768 @ 75Hz, 60.0kHz
18. 1024 x 768 @ 85Hz, 68.67kHz
19. 1280 x 1024 @ 60Hz, 63.4kHz
20. 1280 x 1024 @ 75Hz, 79.97kHz
21. 1280x720 @ 60Hz, 45kHz (HDTV)
Changing Modes
Maximum Mode Change Blank Time, for
image stability. Note:
1) Excluding “Auto Adjust” time
2) Under DOS mode (640 x 350, 720 x 400 & 640 x
400), there is no “Auto Adjust” feature.
3) The monitor needs to do “Auto Adjust” the first
time a new mode is detected.
3 seconds (Max)
1 seconds (Typ) for recognized timings
1-2 seconds (Typ) for unrecognized timing
.
Mode Change Image The image shall blank while the monitor changes
modes.
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•LCD Panel
1st Source Panel QD17EL0709
Type Normally white, TN, Optical compensation film
Active Size 337.920 (H) x 270.336 (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.264 mm
GLASS TREATMENT Anti Glare
# OF BACKLIGHTS 4 CCFL edge-light (2 top / 2 bottom)
BACKLIGHT LIFE 50,000 Hours (Typ) / 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 75 % Entire Area (minimum)
Contrast Ratio 500:1 (Typ), 300:1 (Min)
Color Depth 16 million colors (6 bit panel)
Viewing Angle (Horizontal) 140 deg @ CR>10, 160 deg @ CR>5
VIEWING ANGLE (VERTICAL) 125 deg @ CR>10, 145 deg @ CR>5
Response Time
10%-90% @ Ta=25°C
8 ms (Tr= 6 ms, Tf = 2 ms) (Typ)
TBD ms (Tr= TBD ms, Tf = TBD ms) (Max)
Panel Defects Please see Panel Quality Specifications.
•Mechanical
Dimensions (Base attached unless otherwise specified)
Width 377.6 mm
Height 374.0 mm
Depth 195.6 mm
Depth (Head Only) 55.0 mm
Monitor Weight 4.1 kg / 9.0 lbs
Packaging Specification
Width 450 mm
Height 522 mm
Depth 135 mm
Gross Weight 5.2 kg (11.45 lb)
# units per Pallet 36/72 (air/sea)
20’/40’ Container Loading, Palletized 720/1728 pieces
Ergonomics
Tilt Up 20 degrees minimum
Tilt Down -5 degrees
Swivel Right 0 degrees
Swivel Left 0 degrees
Height Adjust 0 mm
Pivot 0 degrees (Clockwise)
• Environmental Conditions
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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Adjusting the Screen Image
Use the buttons on the front control panel to display and adjust the OnView®
controls which display on the screen. The OnView controls are explained at the
top of the next page.
Front Control Panel
shown below in detail
Main Menu
With OnView controls
Scrolls through menu options and
adjusts the displayed control.
Also a shortcut to display the
Contrast adjustment control
screen.
Power
On/Off
Displays the control
screen for the highlighted
control.
Also toggles between two
controls on some
screens.
Also a shortcut to Auto
Image Adjust.
Power light
Green = ON
Orange = Power Saving
Displays the Main Menu
or exits the control screen
and saves adjustments.
3. Front Panel Function Control Description
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. (The black border around the
edge of the screen should barely touch the illuminated “active area” of the
LCD dislay.)
Main Menu
1:EXIT 2:SELECT
Auto Adjust
Contrast/Brightness
Color Adjust
Information
Image Adjust
Setup Menu
Memory Recall
AUTO
SET
i
?
Do the following to adjust the screen image:
1To display the Main Menu, press button [1].
4To adjust the control, press the up Ior down Jbuttons.
5To save the adjustments and exit the menu, press button [1] twice.
Thefollowing tips may help you optimizeyour display:
• Adjust your computer's graphic card so that it outputs a video signal 1280 x
1024 @ 60 Hz to the LCD dislay. (Look for instructions on “changing the
refresh rate” in your graphic card's user guide.)
• If necessary, make small adjustments using H. POSITION and V. POSITION
until the screen image is completely visible
Contrast
1:EXIT 2: Brightness
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NOTE: All OnView menus and adjustment screens disappear automatically after about 15
seconds. This is adjustable through the OSD timeout setting in the setup menu.
2. To select a control to be adjusted, press SorTto scroll up or down in the Main Menu.
3. After the desired control is selected, press button [2]. A control screen like the one shownbelow
appears.
The line at the bottom of the screen shows the
current functions of buttons 1 and 2: Exit or select
the Brightness control.

Main Menu Controls
Adjust the menu items shown below by using the up Iand down Jbuttons.
Control Explanation
Contrast adjusts the difference between the image background
(black level) and the foreground (white level).
Brightness adjusts background black level of the screen image.
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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:
1. 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.
2. The Auto Image Adjust and most Manual Image Adjust functions are not
available for DVI input.
Color Adjust provides several color adjustment modes: preset color
temperatures and RGB which allows adjustment of red (R), green(G), and blue
B) separately. The factory setting for this product is 6500K (6500 Kelvin).
sRGB-RGB is quickly becoming the industry standard for color management,
with support being included in many of the latest applications. Enabling this
setting allows the LCD display to more accurately display colors the way they
were originally intended. Enabling the sRGB setting will cause the Contrast and
Brightness adjustments to be disabled.
9300K-Adds blue to the screen image for cooler white (used in most office
settings with fluorescent lighting).
6500K-Adds red to the screen image for warmer white and richer red.
5400K-Adds green to the screen image for a darker color.

Control Explanation
i
H. Size (Horizontal Size) adjusts the width of the screen image.
NOTE: Vertical size is automatic with your LCD dislay.
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.
Image Adjust
The Image Adjust controls are explained below:
Image Adjust
1:EXIT 2:SELECT
H./V. Position
H. Size
Fine Tune
Sharpness
3. When you are finished making all color adjustments, press
button [1] twice.
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User Color Individual adjustments for red (R), green (G), and blue (B).
1. To select color (R, G or B) press button [2].
2. To adjust selected color, pressSorT.
Information displays the timing mode (video signal input) coming from the
graphics card in your computer, the LCD model number, the serial number, and
the ViewSonic website URL. See your graphic card's user guide for instructions
on changing the resolution and refresh rate (vertical frequency).
NOTE: VESA 1280 x 1024 @ 60Hz (recommended) means that the resolution
is 1280 x 1024 and the refresh rate is 60 Hertz.

Fine Tune sharpens focus by aligning the illuminated text and/
or graphic characters.
NOTE: Try the Auto Adjust (see page 9) before using the Fine
Tune control.
Sharpness adjusts the clarity and focus of the screen image.
Setup Menu displays the menu shown below.
Explanation
the menus and control screens.
The Setup Menu controls are explained below.
OSD Position allows you to move the on-screen display menus
and control screens.
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 screen
disappears.
Resolution Notice advises the optimal resolution to use.
Language Select allows you to choose the language used in
OSD
?
Control
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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.
Control Explanation
OSD Background allows you to turn the On-Screen display
background on or off. This means that while making adjustments
from the OSD control screens you can also view open software
applications, or the Windows desktop.
OSD
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4. Circuit Description
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1. Outline
1.1 Buttons on the front panel: Power On/Off button, button 2 (ENTER / INPUT SELECT), up arrow
button, down arrow button, button 1 (MENU).
1.2 D-sub 15-pin connector, DVI-Iconnector andAC-IN jack are located on the back side of thecabinet.
1.3 OSD menu includes the following function;
Auto Image Adjust (only active under analog input)
Contrast/Brightness
AudioAdjust
ColorAdjust
Information
Manual Image Adjust
Setup Menu
Memory Recall
1.4 Contrast and Brightness can be directly controlled with UP / DOWN buttons.
2. Connectors
2.1 AC inlet: CEE22 type connector
2.2 Video signal connectorfor analog input: 15P Mini D-Sub
PIN MNEMONIC SIGNAL
1RV Red Video
2GV Green Video
3BV Blue Video
4NC None
5GND Ground (DDC
return)
6RG Red GND
7GG Green GND
8BG 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

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3. ELECTRICAL SPECIFICATIONS
3.1 Standard conditions
Display Area 338x 270 mm
Video Signal 0.7Vpp
Contrast 70%
Brightness Max.
Ambient 20+/-5 °C
Input AC
Warming up > 30 min
Display 1280 x 1024
3.2 POWER
3.2.1 Powersupply Input voltage 100~240Vac
Powerfrequency 50~60Hz
<1.5Arms@90Vac
<0.75Arms@240Vac
Input current
Inrush current
90A(Max) at 230Vac(cold start)
Powerconsumption 50W(typical);40Watts(Max)
3.2.2 Power Management
State Power Indicator
On 45Watts Green
Standby < 1Watts Amber
Off <1Watts Off
3.3 Acceptabletiming
If the timing is within following specification, this LCD display can automatically function with a certain
position.
Horizontal: Sync frequency: 30~81kHz
Vertical: Sync frequency:56~85Hz(1280x1024,75Hz)
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
Sync input: > 1 k ohm
4. SIGNAL CABLE: Signal cable with Mini D-Sub 15P connectors at both ends. Length: 1.8 meter.
Output
@0-3.0A load 12Vdc +/-5%

5.EDID data
VE710s EDID(QDI panel)
Time: 09:10:39
Date: WedJan19,2005
______________________________________________________________________
VIEWSONICCORPORATION
EDIDVersion#1, Revision#3
DDCTestFor:ViewSonicVE710s
______________________________________________________________________
EDID Block 0, Bytes 0-127
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
________________________________________
0 |00FFFFFFFFFFFF005A63
10|18 F5 01 01 01 01 01 0F 01 03
20 |18 22 1B 78 2E 8A 15 A3 58 49
30 |9D 24 16 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 52 0E 11 00
70 |00 1E 00 00 00 FF 00 41 33 33
80 |30 35 30 31 30 30 30 30 31 0A
90 |00 00 00 FD 00 32 4B1E50 0E
100 |00 0A 20 20 20 20 20 20 00 00
110 |00 FC 00 56 45 37 31 30 73 0A
120 |20 20 20 20 20 20 00 8F
______________________________________________________________________
(08-09)ID Manufacturer Name=VSC
(11-10) Product ID Code=F518
(12-15) Last 5 Digits ofSerial Number =Not Used
(16) Week ofManufacture=01
(17)Year of Manufacture=2005
(10-17) Complete Serial Number =See Descriptor Block
(18) EDID VersionNumber = 1
(19)EDID RevisionNumber = 3
(20) VIDEO INPUTDEFINITION:
AnalogSignal
0.700, 0.300 (1.000 Vp-p)
Blank-to-Black Setup, Separate Syncs
(21) MaximumHorizontal ImageSize = 340mm
(22)MaximumVertical ImageSize = 270mm
(23) Display Gamma = 2.20
(24) Power Management and SupportedFeature(s):
Active Off/Very Low Power, Standard Default Color Space,
Preferred Timing Mode
DisplayType=R/G/BColor
(25-34) CHROMA INFO:
Red X - 0.639 Green X - 0.287 Blue X - 0.141 White X - 0.313
Red Y - 0.344 Green Y - 0.615 Blue Y - 0.087 White Y - 0.329
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(35) ESTABLISHEDTIMINGI:
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) ESTABLISHEDTIMINGII:
800 X 600 @ 72Hz (VESA)
800 X 600 @ 75Hz (VESA)
832 X 624 @ 75Hz (Apple,Mac II)
1024X768@60Hz(VESA)
1024X768@70Hz(VESA)
1024X768@75Hz(VESA)
1280 X 1024 @ 75Hz (VESA)
(37) Manufacturer'sReservedTiming:
1152 X 870 @ 75Hz (Apple,Mac II)
(38-53)StandardTiming Identification:
1280 X 1024 @60Hz
1280X960@60Hz
1152X864@75Hz
NotUsed
NotUsed
NotUsed
NotUsed
NotUsed
______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block1:
1280x1024 Pixel Clock: 108.00 MHz
______________________________________________________________________
Horizontal Image Size: 338 mm Vertical Image Size: 270 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:0pixels Frequency:63.98KHz
Vertical:
ActiveTime:1024lines BlankingTime:42lines
SyncOffset:1lines SyncPulseWidth:3lines
Border:0lines Frequency:60.02Hz
Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block2:
MonitorSerialNumber:
A33050100001
_________________________________________________________
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