IBM 5155 Manual To Operations page 95

Test 500
1
Did the following appear on your screen?
nils
tiNE IS BUNKING,
_ BLUE
..
I'!!II!II
. . RED
IIIIIIl!!!
~
YEllOW
c::::::J WtmE
THE SCREEN
YES - Press
g
then
B
and go to the next
step.
tJ
NO - Press
~
then
@ .
Record the error
message and have the system unit
serviced.
January 1984 Test 500-1