IBM 3274 User Manual page 122

001
Does the same display unit fail?
Y N
I
002
Recheck customization, and request appropriate service.
003
Is it possible to swap the signal cable of the failing station
with the signal cable of a known working display station,
at the display stations?
Y N
005
I
004
To further define the problem, arrange time during which
a known working display can be made available. When a
display is available, go to step 005 of this procedure.
Swap signal cables at the display stations. Set thp Normal/Test
switch to Test, then Normal, at both display stations, or turn
power off, then on, and wait up to 2 minutes, whichever is
appropriate. For an IBM 3270 Personal Computer Attachment,
ensure that the Personal Computer is set in the correct mode
for attaching it to the 3274.
Section 2. Problem Determination
2-47