You should do All Mode Reset (Refer to Chapter 6-3) first. This action will allow you to erase all end-
users settings and restore the factory defaults.
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.
Test Pattern: Burn In Mode (Refer to Chapter 6-3)
- Make sure the F/W is the latest version.
- Make sure the S/N is the same as the Spec. label.
- Make sure the model name is correct.
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.
Test Signal : 1280*1024@60Hz
Test Pattern : Horizontal & Vertical Line Thickness Pattern
- Check and see if the image boundary is within the screen frame.
- If not, readjust by the following steps :
(a)
Select and enter
Manual Image Adjust
function on OSD Main Menu.
(b)
Then, select and enter
Horizontal Size
or
Horizontal/Vertical Position
function to adjust the video boundary to be full scanned and within screen frame.
Test Signal : 1280*1024@60Hz
Test Pattern: Full White and Black Pattern
- Refer to Chapter 6-3
26
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VP191b/s
5-1-6 Function Test and Alignment Procedure
.
All Modes Reset
.
Auto Image Adjust
.
Firmware and DDC
.
Fine Tune and Sharpness
.
Boundary
.
White Balance
Summary of Contents for VLCDS25973-2W
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Page 79: ...11 PCB Layout Diagrams Main Board 76 ViewSonic Corporation Confidential Do Not Copy VP191b s ...
Page 80: ...Main Board 77 ViewSonic Corporation Confidential Do Not Copy VP191b s ...
Page 81: ...Control Board 78 ViewSonic Corporation Confidential Do Not Copy VP191b s ...