IBM 3151 Manual To Operations page 83

Operator Messages
3. The operator information area is also used to display one-line menus for
defining setup values and function keys.
4.
If
two or more messages exist in each area. the message with the higher priority
is displayed. Messages in area 3 are displayed in the following order:
In IBM 3151 and IBM 3101 mode
a.
PROBLEM IN VIDEO ELEMENT OR KEYBOARD
b. PROBLEM IN KEYBOARD
c. COMM NOT READY 2
d. COMM NOT READY 1
e. AUX NOT READY
f. HOST BUSY
g. AUX BUSY
h. HOLD SCREEN
i. SENDING
j. RECEIVING
k. PRINTING
I. KEYS LOCKED
m. INVALID KEY
n. WRONG PLACE
o.
KEYBOARD ERROR
p. NUMERIC
In emulation mode of Ten ASCII terminals
a. PROBLEM IN VIDEO ELEMENT OR KEYBOARD
b. PROBLEM IN KEYBOARD
c. COMM NOT READY 2
d. COMM NOT READY 1
e. AUX NOT READY
f. WAIT
g. HOST BUSY
h. AUX BUSY
i. HOLD SCREEN
j. SENDING
k. PRINTING
4-2
IBM 31-51 Guide to Operations