IBM 3274 User Manual page 56

7. Use the keyboard to enter the characters
1234567890ABCDEF into the character positions occupied
by the Xs. If you miskey any characters, use the cursor
move keys ( - and - ) on the right side of the keyboard
to move the cursor to the character position(s) to be
corrected.
8. Press the ENTER key. The top two rows of the display
screen should change to:
EMKV
Note:
If a 1 (numeric error code) or 2 (alphabetic error
code) appears in the top center of the screen, either
you did not enter the 1 through F characters
correctly in step 7 or the attached keyboard is
nonstandard and cannot be used. To recover, enter
the 1 through F characters correctly and press the
ENTER key again. If the error still occurs, replace
the display/keyboard with a standard unit and retry
step 7.
9. Use the keyboard to enter (without spaces) the characters
0123456789ABCDEF into the positions occupied by the
hyphens. As each character is entered, the corresponding
hyphen will be replaced by an asterisk
(*).
An
><
;J;#?
symbol in the operator information area or a locked
keyboard is an indication of a miskeyed character. If you
miskey a character, press the RESET key and enter the 0
through F characters again.
Section
1.
Operator Information
1-45