IBM 3270 Hardware User's Manual page 131

3. Turn the system unit On
(I)
and wait 13 to 90
seconds for any beeps. Ignore all error
messages and anything else on the screen.
Was there any audio response?
Yes No
I
The system unit has a problem.
Report the problem or have the
unit serviced to fix the
problem . •
Beginning with the keyboard adapter cable
(and the keyboard), reconnect the disconnected
cables one by one as follows:
1. Turn the system unit Off (0).
2. Reconnect anyone of the disconnected cables.
3. Turn the system unit On (I).
4. Listen for any beeps.
5. When there is no beep, the device you
connected last has a problem. Report the
problem or have the device serviced to fix the
problem . •
5-16
Book 1 - 3270 PC Work Station User's Guide