IBM 3270 Manual page 19

Did the POST run correctly?
Yes
I
No
I
Did the IBM BASIC panel appear instead
of the one shown above?
Yes No
I
Go to the chapter that deals
problems in your Guide to
Operations.
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.
Turn off your system unit, and rerun
the POST beginning on page 1-2.
Press the Space Bar, and wait about one minute.
Your windows should appear on your screen.
Your system is now ready to use. Go to "Chapter
2. Selecting and Using Your Windows" to choose
the window you want to start your work.
1-8
Book 3 - Using the Control Program