Viewsonic VG712sb Service Manual 1b

Service Manual

ViewSonic VG712s/b-1

Model No. VLCDS23719-6W/7W

17” Color TFT LCD Display

ViewSonic

(VG712s/b_SM_835_1b Rev. 1b Oct. 2004)



381 Brea Canyon Road, Walnut, California 91789 USA - [phone]

Copyright

Copyright

2004 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.

1a

1b

DCN Number ECR Number

06/18/04

10/18/04

Revision History

Documents Number

4475

4774

4626

Description of Changes EditorRevision SM Editing Date

Initial Release

Change Panel From AUO M170EN05 V.8 48.62701.003 12ms/20ms

To AUO M170EG01 V.0 48.62701.004 12ms

A. Lu

A. Lu

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TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjusting Procedure

6. Trouble Shooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram And Spare Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

1

5

14

21

24

49

53

61
65
66

72

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1. Precautions and Safety Notices

1. Appropriate Operation

(1) Turn off the product before cleaning.
(2) Use only a dry soft cloth when cleaning the LCD panel surface.
(3) Use a soft cloth soaked with mild detergent to clean the display housing.
(4) Use only 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 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 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.

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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.

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5.2 Handling and Placing Methods

Correct 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.

Incorrect Methods:

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.”

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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.”

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2. Specification

1. General Requirements

Test Resolution & Frequency 1280x1024 @ 60Hz
Test Image Size Full Size

Contrast and Brightness Controls

2. Signal Interface

Vide o Int e r fac e
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)

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
Exclusions Not compatible with interlaced video

3. Power

Factory Default:
Contrast = 70%, Brightness = 100%

Separate

2. TMDS (Digital)

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

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<<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 “Auto Adjust”

2. Under DOS mode (640 x 350, 720 x 400 &

3. The monitor needs to do “Auto Adjust” the

5. Audio Interface

Speaker Specification

Line input connection 3.5 mm stereo jack
Line input signal 1.0 Vrms
Line input impedance 10 k Ohm
Maximum power output (Electri c) 3 W @ < 8% DISTORTION
Signal to Noise Ratio 72 dB
Frequency response 400 Hz – 20 KHz
Distortion < 8 % THD (@1KHz)

4. While running Change Mode, Auto Adjust or

Memory Recall, the image shall blank.

time

640 x 400), it should recall factory setting
when execute “Auto Adjust”

first time a new mode is detected

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6. LCD Panel

Panel Characteristics
Source panel AU panel (M170EG01 V0)

Size 17”diagonal screen size
Typ e 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)
Viewi n g Angle(Horizontal) 140 deg @ CR>10
Viewi n g Angle (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

Tilt Down -5 º +/- 20%

20 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

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9. EDID

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

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(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

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______________________________________________________________________
(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

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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

61 59 45 59 31 59 31 0A 01 01

40 |
50 |

01 01 01 01 30 2A 00 98 51 00
60 |

2A 40 30 70 13 00 52 0F 11 00
70 | 0

0 1E 00 00 00 FF 00 50 33 55

30 34 30 31 30 30 30 30 31 0A

80 |
90 |

00 00 00 FD 00 32 55 1E 52 0E

00 0A 20 20 20 20 20 20 00 00

100 |

00 FC 00 56 47 37 31 32 73 0A

110 |
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

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(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

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______________________________________________________________________
(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

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3. Front Panel Function Control Description

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.

MAIN

MENU

AUTO IMAGE ADJUST
CONTRAST/BRIGHTNESS
INPUT SELECT
AUDIO MENU
COLOR ADJUST
INFORMATION
MANUAL IMAGE ADJUST
SETUP MENU
MEMORY RECALL

ř EXIT ř SELECT

1

2

Speaker Speaker

Main Menu with OnView controls

Front Control Panel shown
below

Scrolls through menu options and
adjusts the displayed control.

Also a shortcut to display the
Contrast adjustment control
screen.

Displays the Main Menu
or exits the control screen
and saves adjustments

Decreases or
increases volume

Audio Mute button
turns the sound 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

Power
On/Off

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Do the following to adjust the screen image:

To display the Main Menu, press button [1].

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.

2

To select a control you want to adjust, press ▲ or ▼ to scroll up or down the
Main Menu.

3

After the control is selected, press button [2]. A control screen like the one
shown below appears.

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.

4

To adjust the control, press the up ▲ or down ▼ buttons.

5

To 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.)

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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

Input Select

adjusts background black level of the screen image.

toggles between inputs if you have more than one

computer.

Audio Adjust

Volume

increases the volume, decreases the volume, and

mutes the audio.

Mute

Color Adjust

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

temporarily silences audio output.

provides several color adjustment modes: preset

RGB

which allows you to adjust red (R),

Color Adjust

sRGB

9300K

Ԧ6500K

5400K
5000K

User Color

1:EXIT 2:SELECT

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.

9300K

in most office settings with fluorescent lighting).

6500K

richer red.

5400K
5000K

— Adds blue to the screen image for cooler white (used

— Adds red to the screen image for warmer white and

— Adds green to the screen image for a darker color.
— Adds blue and green to the screen image for a darker

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Control Explanation

User Color

and blue (B)

1

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

2

To adjust selected color, press ▲ or ▼.

Important

— Individual adjustments for red (R), green (G),

.

: 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.

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.

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

Manual Image Adjust Sub-menu

H. Size (Horizontal Size)

H./V. Position (Horizontal/Vertical Position)

adjusts the width of the screen image.

image left or right and up or down.

moves the screen

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Control Explanation

Fine Tune

sharpens the focus by aligning the text and/or graphic

characters.

NOTE:

Sharpness

Try Auto Image Adjust first.

adjusts the clarity and focus of the screen image.

Setup menu displays the menu shown below:

Setup Menu

Language Select

Resolution Notice

OSD Position

OSD Time Out

OSD Background On/Off

1: Exit 2: Select

Language

allows you to choose the language used in the menus

and control screens.

Resolution Notice

Resolution Notice

ԦOn ԦOff

1: Exit

allows you to enable or disable this notice.

If you enable the Resolution Notice shown above and your
computer is set at a resolution other than 1280 x 1024, the
following screen appears.

Resolution Notice

For best picture quality, change the resolution to 1280 x 1024

Press "1" to Clear Message.
Press "2" to Disable Message.

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Control Explanation

OSD Position

allows you to move the on-screen display menus

and control screens.

OSD Timeout

sets the length of time the on-screen display
screen is displayed. For example, with a “30 second” setting, if a
control is not pushed within 30 seconds, the display screen
disappears.

OSD Background

On/Off

allows you to turn the On-Screen Display

background On or Off.

Memory Recall

returns the adjustments back to factory settings
if the display is operating in a factory Preset Timing Mode listed
in the Specifications of this manual.

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Hot Keys for Function Controls

Buttons: Functions:

[Up] + [Down] arrows Recall Contrast or Brightness while in the Contrast

[Volume-] + [Volume+] Recall volume to 50% while in volume adjustment,

[1] + [2] Toggle 720x400 and 640x400 mode when input

[1] + [Up] + [Down] White Balance. White Balance should set the screen

[1] + [Down] (hold for 10 seconds) Power Lock (Unlock). User won’t be able to turn off

[1] + [Up] (hold for 10 seconds) OSD Lock (Unlock). It will lock all functions,

[Up] + [Down] + [Power On] with signal

(Hold for 3 seconds. Release “Power” button first

and then “Up” & ”Down” buttons.)

[Up] + [Down] + [Power On]

Without signal

(Hold for 3 seconds. Release “Power” button first

and then “Up” & ”Down” buttons.)

or Brightness adjustment, or recall both of Contrast
and Brightness when the OSD is not on.

or when OSD is not on.

720x400 or 640x400 mode.

on the pure black and white pattern with
640*480@60Hz resolution.

the monitor.

including “Volume” and “Mute”.
All Mode Reset. It will erase all end users’ settings
and restore the factory defaults.

Burn in Mode. After entering Burn in Mode, press
[1] button, you can find the information about this
monitor.

Remark: All the shortcut functions are only available while OSD is off.

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Do Not Copy VG712s/b