IBM 5155 Manual To Operations page 91

Test 300
1
After approximately two minutes, did the
following appear on your screen?
I I I I I I I I I I I I I I I I
I I I I I I I I
I
I I I I
I I I I I I I I I I I
I I
I I I I I I
I I I I I I
I I I I I
I I I I
PRESS EACH KEY. HOLD FOR TYPEMATIC TEST
IF OK PRESS "Y ENTER"
IF NOT OK PRESS "N ENTER"
YES - Press each key once, then go to the next
step.
NO - Press
~
then
~
. Record the error
message. Have the system unit serviced.
January 1984 Test 300-1