IBM Personal Computer Manual To Operations page 205

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16
Leave the Printer Cable disconnected from the
printer and do the system diagnostic tests again.
Verify that the list of installed devices and
options is correct (your printer will be missing
from the list).
17
Did you receive the same error message during
the tests?
YES -
If
your printer was attached to an
adapter in your system unit, have the
system unit serviced.
If
your printer was
attached to an adapter in the expansion
unit, have the expansion unit serviced.
Remember to reset the DIP switches.
NO - Have the printer and its cable serviced.
18
Your printer also is controlled by program
commands from the system unit.
If
you are still
having a printer problem, or if a problem occurs
only during a particular program, exanline the
program thoroughly for commands that might
cause the printer to produce undesired results.
If
you have completed the printer self-test and
have no apparent program problems, have the
unit to which the printer is attached serviced.
Remember to reset the DIP switches.
April 1984
Test 8020-7

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