IBM 5150 Manual To Operations page 218

13.
Read all of this step before taking action.
Press
to select
"Run Tests One Time."
•
Press enter.
•
• After pressing enter, the screen will match the figure
below "System Unit 100." There will be a time delay
while the System Unit is checking memory. Screen
will change to Step 14 with no action taken.
SYSTEM CHECKO UT
0- RUN TESTS ONE TIME
1 -
RUN TESTS MULTIPLE TIMES
2 - LOG UTILITIES
9 - EXIT DIAGNOSTIC ROUTINES
ENTER THE ACTION DESIRED
10
CO
SYSTEM UNIT
100
0
PDPs 4-30