ViewSonic VG712s User manual

Model No. VLCDS23719-6W/7W
17” Color TFT LCD Display
Service Manual
ViewSonic VG712s/b-1
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
(VG712s/b_SM_835_1b Rev. 1bOct. 2004)

Copyright
Copyright
¤
2004by 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.
Trademarks
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Optiquest is a registered trademark of ViewSonic Corporation.
Revision History
Re
i
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b
1a
DCN Number ECR Number
Documents Number Description of Changes EditorRevision SM Editing Date
1a 06/18/04 4475 Initial Release A. Lu
1b 10/18/04 4774 Change Panel From AUO M170EN05 V.8 48.62701.003 12ms/20ms
A. Lu
4626
To AUO M170EG01 V.0 48.62701.004 12ms

TABLE OF CONTENTS
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
6. Trouble Shooting Flow Chart
9. Block Diagram
10. Schematic Diagrams
7. Recommended Spare Parts List
1. Precautions and Safety Notices
5. Adjusting Procedure
8. Exploded Diagram And Spare Parts List
11. PCB Layout Diagrams
1
5
14
21
24
49
53
61
65
66
72
ii
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

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 high quality and safety approved AC/DC power adapter.
(5) Disconnect the power plug from AC outlet if the product is not used for a long period of time.
(6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD displayoff.
(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 susceptible to excessive dusts and dirt.
-Near any appliance generating a strong magnetic field.
-Place 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. Power Supply Requirements
The external power converter for this display utilizes AC and DC cords, AC cord is detachable, but DC cord is permanently
attached. Any attempt to replace another adapter could result in serious problems on the display.
1. Precautions and Safety Notices
1
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

5. LCD Module Handling Precautions
5.1 Handling Precautions
(1) Since front polarizer is easily damaged, pay attention not to scratch it.
(2) Be sure to turn off power supply when inserting or disconnecting from input connector.
(3) Wipe off water drop 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 insure human earth when
handling.
(7) Do not open nor modify the Module Assembly.
(8) Do not press the reflector sheet at the back of the module to any directions.
(9) In case if a Module has to be put back into the packing container slot after once it was taken out from 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 nor tilt the Interface
Connector of the TFT Module.
(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist
nor bend the TFT Module even momentary. At designing the enclosure, it should be taken into
consideration that no bending/twisting forces are applied to the TFT Module from outside. Otherwise the
TFT Module may be damaged.
(12) Cold cathode fluorescent lamp in LCD contains a small amount of mercury. Please follow local ordinances
or regulations for disposal.
(13) Small amount of materials having no flammability grade is used in the LCD module. The LCD module
should be supplied by power complied with requirements of Limited Power Source (IEC60950 or UL1950),
or be applied exemption.
(14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit (IEC60950 or
UL1950). Do not connect the CFL in Hazardous Voltage Circuit.
2
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

5.2 Handling and Placing Methods
Correct Methods: Incorrect Methods:
Only touch the metal frame of the LCD panel or the front
cover of the monitor. Do not touch the surface of the
polarizer.
Surface of the LCD panel is pressed by fingers and that
will probably cause “Mura.”
Take out the monitor with cushions Take out the monitor by grasping the LCD panel. That
will probably cause “Mura.”
3
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

Place the monitor on a clean and soft foam pad. Place the monitor on foreign objects. That will probably
scratch the surface of the panel or cause “Mura.”
The panel is placed facedown on the lap. That will
probably cause “Mura.”
4
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

1. General Requirements
Test Resolution & Frequency 1280x1024 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls Factory Default:
Contrast = 70%, Brightness = 100%
2. Signal Interface
Video Interface
Analog Input Connector DB-15 (Analog)
Digital Input Connector DVI-I (Digital)
Default Input Connector Defaults to the first detected input
Video Cable Connector DB-15 Pin out Compliant DDC 2B
Video Signals 1. Video RGB (Analog)
Separate
2. TMDS (Digital)
Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
Exclusions Not compatible with interlaced video
3. Power
Power Supply
Power Supply (Adapter) Part Number: LSE 0107A1240
Input Voltage Range 90 to 264 VAC
Over Current Protection 12.7V ~ 18V full load
Power Dissipation 40 Watts (typ.)
4. Electrical Requirements
Horizontal / Vertical Frequency
Horizontal Frequency 30 – 82 KHz
Vertical Refresh Rate 50 – 85* Hz.
1. Since 75Hz in panel spec, the image quality
might be worse than <= 75Hz
2. For resolution 1280 x 1024, the vertical refresh
rate up to 75 Hz; for the rest resolutions, the vertical
refresh rate up to 85Hz
Maximum Pixel Clock 135 MHz
Primary Preset 1280x1024@60Hz
Look up table timing
2. Specification
5
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

<<Analog>>
640 x 350 @ 70Hz, 31.5KHz
640 x 400 @ 60Hz, 31.5KHz
640 x 400 @ 70Hz, 31.5KHz
640 x 480 @ 50Hz, 24.7KHz
640 x 480 @ 60Hz, 31.5KHz
640 x 480 @ 67Hz, 35.0KHz
640 x 480 @ 72Hz, 37.9KHz
640 x 480 @ 75Hz, 37.5KHz
640 x 480 @ 85Hz, 43.27KHz
720 x 400 @ 70Hz, 31.5KHz
800 x 600 @ 56Hz, 35.1KHz
800 x 600 @ 60Hz, 37.9KHz
800 x 600 @ 75Hz, 46.9KHz
800 x 600 @ 72Hz, 48.1KHz
800 x 600 @ 85Hz, 53.7KHz
832 x 624 @ 75Hz, 49.7KHz
1024 x 768 @ 60Hz, 48.4KHz
1024 x 768 @ 70Hz, 56.5KHz
1024 x 768 @ 72Hz, 58.1KHz
1024 x 768 @ 75Hz, 60.0KHz
1024 x 768 @ 85Hz, 68.67KHz
1152 x 864 @ 75Hz, 67.5KHz
1152 x 870 @ 75Hz, 68.7KHz
1280 x 1024 @ 60Hz, 63.4KHz
1280 x 1024 @ 75Hz, 79.97KHz
1280x 720 @ 60Hz, 45KHz (HDTV)
<<Digital>>
640 x 350 @ 70Hz, 31.5KHz
640 x 400 @ 60Hz, 31.5KHz
640 x 400 @ 70Hz, 31.5KHz
640 x 480 @ 50Hz, 24.7KHz
640 x 480 @ 60Hz, 31.5KHz
640 x 480 @ 67Hz, 35.0KHz
640 x 480 @ 72Hz, 37.9KHz
640 x 480 @ 75Hz, 37.5KHz
640 x 480 @ 85Hz, 43.27KHz
720 x 400 @ 70Hz, 31.5KHz
800 x 600 @ 56Hz, 35.1KHz
800 x 600 @ 60Hz, 37.9KHz
800 x 600 @ 75Hz, 46.9KHz
800 x 600 @ 72Hz, 48.1KHz
800 x 600 @ 85Hz, 53.7KHz
832 x 624 @ 75Hz, 49.7KHz
1024 x 768 @ 60Hz, 48.4KHz
1024 x 768 @ 70Hz, 56.5KHz
1024 x 768 @ 72Hz, 58.1KHz
1024 x 768 @ 75Hz, 60.0KHz
1024 x 768 @ 85Hz, 68.67KHz
1152 x 864 @ 75Hz, 67.5KHz
1152 x 870 @ 75Hz, 68.7KHz
1280 x 1024 @ 60Hz, 63.4KHz
1280 x 1024 @ 75Hz, 79.97KHz
1280x 720 @ 60Hz, 45KHz (HDTV)
Changing Modes
Maximum Mode Change Blank Time for image
stability. Note:
1. 3 seconds (Max), excluding “AutoAdjust”
time
2. Under DOS mode (640 x 350, 720 x 400 &
640 x 400), it should recall factory setting
when execute “Auto Adjust”
3. The monitor needs to do “AutoAdjust” the
first time a new mode is detected
4. While running Change Mode, Auto Adjust or
Memory Recall, the image shall blank.
5. Audio Interface
Speaker Specification
Line input connection 3.5 mm stereo jack
Line input signal 1.0 Vrms
Line inputimpedance 10 k Ohm
Maximum power output (Electric) 3 W @ < 8% DISTORTION
Signal to Noise Ratio 72 dB
Frequency response 400 Hz – 20 KHz
Distortion < 8 % THD (@1KHz)
6
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

6. LCD Panel
Panel Characteristics
Source panel AU panel (M170EG01 V0)
Size 17”diagonal screen size
Type MVA type with LVDS interface
Pixel 1280*1024 addressable pixels
Pixel Pitch 0.264mm*0.264mm pixel pitch
Brightness 300 cd/m2 (Typ after 30 minute warm up)
Contrast Ratio 500:1 (Typ), 300:1 (Min)
ViewingAngle(Horizontal) 140 deg @ CR>10
ViewingAngle (Vertical) 130 deg @ CR>10
Response Time 12 ms (Tr=9ms, TF =3 ms) (Typ.)
Backlight lamps 4 CCFL backlight lamps
Backlight Life 50,000 Hours (Typ.) / 45,000 hours (Min.)
7. Mechanical
Dimensions
Width 378 mm (14.9 inch)
Height 405 mm (16.0 inch)
Depth 177 mm ( 7.0 inch)
Monitor Weight 5.3 kg / 11.66 lbs
Ergonomics
Tilt Up 20 º +/- 20%
Tilt Down -5 º +/- 20%
8. Environmental
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
7
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

Appendix E: Analog EDID
VG712s/b Analog EDID
Time: 13:10:50
Date: Wed Jan 14, 2004
______________________________________________________________________
______________________________________________________________________
VIEWSONIC CORPORATION
EDID Version # 1, Revision # 3
DDCTest For: ViewSonic VG712s/b
______________________________________________________________________
______________________________________________________________________
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 | 19 7B 01 01 01 01 01 0E 01 03
20 | 08 22 1B 78 2E C5 C6 A3 57 4A
30 | 9C 23 12 4F 54 BF EF 80 81 80
40 | 61 59 45 59 31 59 01 01 01 01
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 52 0F 11 00
70 | 30 00 1E 00 00 00 FF 00 50 33 55
80 | 30 34 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 47 37 31 32 73 0A
120 | 20 20 20 20 20 20 00 94
______________________________________________________________________
(08-09) ID Manufacturer Name = VSC
(11-10) Product ID Code = 7B19
(12-15) Last 5 Digits of Serial Number = Not Used
(16) Week of Manufacture = 01
(17) Year of Manufacture = 2004
(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
9. EDID
8
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

(21) Maximum Horizontal Image Size = 340 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 -0.640 Green X -0.290 Blue X -0.140 White X -0.310
Red Y -0.340 Green Y -0.610 Blue Y -0.070 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
1024 X 768 @85Hz
800 X 600 @85Hz
640 X 480 @85Hz
Not Used
Not Used
Not Used
Not Used
9
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block 1:
1280x1024 Pixel Clock: 108.00 MHz
______________________________________________________________________
Horizontal Image Size: 338 mm Vertical Image Size: 271 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
Vertical:
Active Time: 1024 lines Blanking Time: 42 lines
Sync Offset: 1 lines Sync Pulse Width: 3 lines
Border: 0 lines Frequency: 60.02 Hz
Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block 2:
Monitor Serial Number:
P3U040100001
______________________________________________________________________
(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
______________________________________________________________________
(108-125) Detailed Timing / Descriptor Block 4:
Monitor Name:
VG712s/b
(126) No Extension EDID Block(s)
(127) CheckSum OK
10
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

Appendix F: Digital EDID
VG712s/b Digital EDID
Time: 08:14:47
Date: Fri Jan 30, 2004
______________________________________________________________________
______________________________________________________________________
VIEWSONIC CORPORATION
EDID Version # 1, Revision # 3
DDCTest For: ViewSonic VG712s/b
______________________________________________________________________
______________________________________________________________________
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 | 19 7B 01 01 01 01 01 0E 01 03
20 | 80 22 1B 78 2E C5 C6 A3 57 4A
30 | 9C 23 12 4F 54 BF EF 80 81 80
40 | 61 59 45 59 31 59 31 0A 01 01
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 52 0F 11 00
70 | 001E 00 00 00 FF 00 50 33 55
80 | 30 34 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 47 37 31 32 73 0A
120 | 20 20 20 20 20 20 00 E3
______________________________________________________________________
(08-09) ID Manufacturer Name = VSC
(11-10) Product ID Code = 7B19
(12-15) Last 5 Digits of Serial Number = Not Used
(16) Week of Manufacture = 01
(17) Year of Manufacture = 2004
(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
11
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

(21) Maximum Horizontal Image Size = 340 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 -0.640 Green X -0.290 Blue X -0.140 White X -0.310
Red Y -0.340 Green Y -0.610 Blue Y -0.070 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
1024 X 768 @85Hz
800 X 600 @85Hz
640 X 480 @85Hz
640 X 400 @70Hz
Not Used
Not Used
Not Used
12
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block 1:
1280x1024 Pixel Clock: 108.00 MHz
______________________________________________________________________
Horizontal Image Size: 338 mm Vertical Image Size: 271 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
Vertical:
Active Time: 1024 lines Blanking Time: 42 lines
Sync Offset: 1 lines Sync Pulse Width: 3 lines
Border: 0 lines Frequency: 60.02 Hz
Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block 2:
Monitor Serial Number:
P3U040100001
(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
______________________________________________________________________
(108-125) Detailed Timing / Descriptor Block 4:
Monitor Name:
VG712/b
(126) No Extension EDID Block(s)
(127) CheckSum OK
13
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

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 thenext page.
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 toggle
between analog and
digital connections.
Power light
Green = ON
Orange = Power
Saving
Main Menu with OnView controls
Front Control Panel shown
below
Audio Mute button
turns the sound off.
Displays the Main Menu
or exits the control screen
and saves adjustments
Decreases or
increases volume
Speaker Speaker
MAIN
řEXIT řSELECT
MENU
AUTO IMAGE ADJUST
CONTRAST/BRIGHTNESS
INPUT SELECT
AUDIO MENU
COLOR ADJUST
INFORMATION
MANUAL IMAGE ADJUST
SETUP MENU
MEMORY RECALL
12
3. Front Panel Function Control Description
14
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

Do the following to adjust the screen image:
1To display the Main Menu, press button [1].
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.
2To select a control you want to adjust, press ▲or ▼to scroll up or down the
Main Menu.
3After the control is selected, press button [2]. A control screen like the one
shown below appears.
4To adjust the control, press the up ▲or down ▼buttons.
5To save the adjustments and exit the menu, press button [1] twice.
The following tips may help you optimize your display:
• Adjust your computer's graphic card so that it outputs a video signal 1280 x
1024 @ 60Hz to the LCD display. (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. (The black border around the
edge of the screen should barely touch the illuminated "active area" of the
LCD display.)
The command line at the
bottom of the control screen
tells what to do next from this
screen. You can toggle
between control screens,
adjust the selected option, or
exit the screen.
15
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

Main Menu Controls
Adjust the menu items shown below by using the up ▲ and down ▼ buttons.
Control Explanation
Auto Image Adjust sizes and centers the screen image
automatically.
Contrast adjusts the difference between the image background
(black level) and the foreground (white level).
Brightness adjusts background black level of the screen image.
Input Select toggles between inputs if you have more than one
computer.
Color Adjust provides several color adjustment modes: preset
color temperatures and RGB which allows you to adjust red (R),
green (G), and blue (B) separately. 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).
6500K — Adds red to the screen image for warmer white and
richer red.
5400K — Adds green to the screen image for a darker color.
5000K — Adds blue and green to the screen image for a darker
sRGB —sRGB 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.
Color Adjust
sRGB
9300K
Ԧ6500K
5400K
5000K
User Color
1:EXIT 2:SELECT
Audio Adjust
Volume increases the volume, decreases the volume, and
mutes the audio.
Mute temporarily silences audio output.
16
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b

User Color— Individual adjustments for red (R), green (G),
and blue (B).
1To select color (R, G or B) press button [2].
2To adjust selected color, press ▲or ▼.
Important: If you select RECALL from the Main Menu when
the product is set to a Preset Timing Mode, colors return to the
6500K factory preset.
Control Explanation
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.
Manual Image Adjust Sub-menu
H. Size (Horizontal Size) adjusts the width of the screen image.
H./V. Position (Horizontal/Vertical Position) moves the screen
image left or right and up or down.
Information:
H. Frequency: XX kHz
V. Frequency: XX Hz
Resolution XXXXXXXXX
Pixel Clock: XXX MHz
Serial Number: XXXXXXXXXXX
Model Number: XXXXXXXXXXX
www.ViewSonic.com 1: Exit
17
ViewSonic CorporationConfidential
-
Do Not Copy VG712s/b