Using the 4820 Video Quality Test Pattern program
Note: This section does not apply to the Models 1FR and 1FD.
The 4820 Video Quality Test Pattern program provides additional support when the
display image is unsatisfactory.
When to use: Use this program only if you cannot obtain satisfactory results using
the Auto Adjust and Manual Adjust features of the OSD menu. You can use Auto
Adjust frequently because it automatically fine tunes your settings based on your
PC’s video signal.
DOS users: To run the 4820 Video Quality Test Pattern program for DOS users,
follow these steps:
1. Download the 4820Patt.exe program from the support Web site:
www.ibm.com/solutions/retail/store, then click Support, and create a diskette.
This file generates a special image pattern.
2. Boot the system by using the diskette, or from a DOS command prompt (full
screen), run the DOS_PAT.exe. A 640 x 480 text pattern is displayed.
3. Press the (−) and plus (+) buttons at the same time. The OSD menu is
displayed.
4. Select Auto Adjust.
5. After adjustment is complete, press any key on the keyboard. A 720 x 400 text
pattern is displayed.
6. Select Auto Adjust.
7. When complete, press the minus (−) and plus (+) buttons at the same time.
Your adjustments are saved and the OSD menu closes.
Notes:
a. If the screen flickers, repeat the steps 3 through 7 or select Manual Adjust.
b. Press any key to exit a special image pattern.
Adjusting the image
Update November 2005
54 4820 Planning, Installation and Service Guide
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