IBM Personal Computer Manual To Operations page 82

Personal Computer XT POST Errors
In the following examples, find your screen response
and audio response, then follow the instructions in the
box marked "Action."
Warning: If the instructions are to have a unit
~
serviced, and that unit has a fixed disk drive, we
recommend that you back up all disk files onto
diskettes. Normal shipping and handling can result
in permanent loss of data on your fixed disk drives.
Refer to the IBM DOS manual for a description of
the Backup command.
Example 1
Screen Response Audio Response
Action
1;;;III1I11I1I11I~1
Have the
..
..
~
Amount of
1 short beep
system unit
memory shown
serviced
is wrong or
cursor is
missing
30-8 Start
April 1984