IBM 5150 Hardware Maintenance Manual page 45

Press
Q
and
~
(Enter) to bring up the system
checkout menu; press
!9
and
~
(Enter); press
!9
(XXXKB Memory) and (Enter).
@
TESTING - XXXKB MEMORY
•
CD
DID YOU RECEIVE AN ERROR MESSAGE?
NO
Go to page
200-5.
YES
200-2