Display Check 25 - IBM 3270 Maintenance Manual

Display Check 25
Use this procedure only if your screen is blank,
unreadable, unstable, incorrect, or if it matches
one of the following screens. If your display is
readable, go to "Diagnostic Testing 90" on
page
13-90-1.
Too DiRJ
Too Wide
~
rill
Too Short Shrunk
•
--
....................
:::;;:::~~::::-~
:z~:s~~~~~~~
11.....11
~-:.~-:.~X:z;d~
CI
•
CI
•
II
Too Narrow
CI
•
•
Changes Size When
Brightness Control
Turned
Tilted
Out of Focus
DO YOU HAVE AN IBM COLOR DISPLAY?
NO
Go to page 3-25-4.
YES
October 1984 3-25-1