IBM 5155 Manual To Operations page 163

13
Did you receive any of the following error
messages during diagnostic testing?
199
432
901
1401
YES - Go to the next step.
NO -
If
you are still having a problem go to
Step 16.
14
Leave the printer cable disconnected from the
printer and run the system diagnostic tests again.
Verify that the list of installed devices and
options is correct. (your printer will be missing
from the list).
15
Did you receive the same error message when
you ran the system diagnostic tests this time?
YES - If
your printer is attached to an adapter
in your system unit, have the system unit
serviced. If your printer is attached to
an adapter in the expansion unit, have
the expansion unit serviced.
NO - Have the printer and cable serviced.
January 1984
Test 8000-7