IBM 3270 Manual page 62

Now, answer the following questions:
Did all three reponses (above) occur
correctly?
Yes No
I
Did the IBM BASIC panel appear instead
of the one shown above?
Yes No
I
Go the chapter in your
Guide to Operations
that deals with problems and follow
the procedures described there.
You did not insert a system diskette
in drive A, or you do not have a copy
of the control program on your fixed
disk.
Insert a system disk in drive A or
place a copy of the control program
on your fixed disk and rerun the POST
beginning on page 1-51.
Press the Space Bar, and wait about one minute.
Chapter 1. Setting Up the 3270 PC Control Program 1-53