![background image](http://html.mh-extra.com/html/viewsonic/vlcds25973-4w/vlcds25973-4w_service-manual_1021324024.webp)
Black-White Pattern (Figure 9)
1.5 Function Test and Alignment Procedure
1.5.1 All Modes Reset
You should do “All Mode Reset”
(Refer to Chapter III-3. Hot Keys for Function Controls) first. This action
will allow
you to erase all end-user’s settings and restore the factory defaults.
1.5.2 Auto Image Adjust
Please select and enter
“
Auto Image Adjust
”
function on Main Menu to see if it is workable.
The "Auto Image
Adjust
"
function is aimed to offer a better screen quality by built-in ASIC.
For optimum screen quality, the user has to
adjust each function manually.
1.5.3 Firmware
Test Pattern: Burn In Mode
(Refer to Chapter III-3. Hot Keys for Function Controls)
- Make sure the F/W is the latest version.
1.5.4 DDC
Test Pattern: EDID program
- Make sure it can pass test program.
1.5.5 Fine Tune and Sharpness
Test Signal: 1280*1024@60Hz
Test Pattern: Line Moire Pattern
- Check and see if the image has noise and focus performs well. Eliminate visual line bar.
- If not, readjust by the following steps:
(a) Select and enter “
Fine Tune
” function on “
Manual Image Adjust
” to adjust the image to eliminate
visual wavy
noise.
(b) Then, select and enter “
Sharpness
” function to adjust the clarity and focus of the screen image.
21
ViewSonic
Corporation
Co
nfidential
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Do
Not
Copy
VP912s/b
Summary of Contents for VLCDS25973-4W
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