IBM 5155 Manual To Operations page 70

Example 3
XXX KB OK
XX:XX:XX
ERROR. (RESUME
=
"F1" KEY)
Warning: If the above message is displayed on
your screen, it is an indication that POST has
detected an error.
If you have an expansion unit and it is not
connected to your system or the Power switch is not
set to On, you will receive the above message.
Pressing the Fl key allows the system to bypass the
error condition for diagnostic purposes. Your
system may not function correctly unless it is
serviced.
Continue with "Loading Diagnostics" on the next page.
000-2 Test
January 1984