![background image](http://html1.mh-extra.com/html/viewsonic/va912-4/va912-4_service-manual_1020986017.webp)
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
provides several color options: preset color temperatures and Custom User Color which allows you to
adjust red (R), green (G), and blue (B). The factory setting for this product is 6500K (6500° Kelvin).
9300K — Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting).
5400K — Adds red to the screen image for warmer white and richer red.
Custom User Color — Individual adjustments for red, green, and blue.
1 To select color (R, G or B) press button [2].
2 To adjust selected color, press or .
3 When you are finished making all color adjustments, press button [1] twice.
G.
Information
displays the timing mode (video signal input) coming from the graphics card in your computer. See your
graphic card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency). VESA 1280
x 1024 @ 60 Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz.
H.
Manual Image Adjust
controls are explained below:
H
. Size (Horizontal Size) adjusts the width of the screen image.
NOTE: Vertical size is automatic with your LCD display.
H./V. Position adjusts
horizontal and vertical position of the screen image. You can toggle between Horizontal and
Vertical by pressing button [2]. Horizontal moves the screen image to the left or to the right. Vertical moves the screen
image up and down.
Fine Tune
sharpens focus by aligning the illuminated text and/or graphic characters.
Sharpness adjusts
the clarity and focus of the screen image.
Setup Menu
controls are explained below:
Language allows
you to choose the language used in the menus and control screens.
Resolution Notice
displays the recommended resolution for this LCD display.
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”
setting, if a control is not pushed within 15 seconds, the display OSD disappears.
I.
OSD Position
allows you to move the on-screen display menus and control screens.
J.
Memory Recall
returns adjustments to the original factory settings if the display is operating in a factory Preset
Timing Mode listed in this user guide.
14
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VA912-4_VA912b-4
▲
▼
Содержание VA912-4
Страница 16: ...3 Front Panel Function Control Description 13 ViewSonic Corporation Confidential Do Not Copy VA912 4_VA912b 4...
Страница 71: ...11 PCB Layout Diagrams MB TOP 68 ViewSonic Corporation Confidential Do Not Copy VA912 4_VA912b 4...
Страница 72: ...69 ViewSonic Corporation Confidential Do Not Copy VA912 4_VA912b 4...
Страница 73: ...70 ViewSonic Corporation Confidential Do Not Copy VA912 4_VA912b 4...
Страница 74: ...71 ViewSonic Corporation Confidential Do Not Copy VA912 4_VA912b 4...