IBM 3270 Maintenance Manual page 155

Check the first character of your error code.
ENTER THE NUMBER(S) OF OPTIONS TO TEST
OR PRESS ENTER TO SELECT ALL OPTIONS
?2
TESTIN~
- XXXKB MEMORY
THIS TEST TAKES UP TO TWO MINUTES
PLEASE STAND BY
XX:XX:XX
I
ERROR - XXXKB MEMORY 201 S
t
FAILING ADDRESS - SPACE/MODULE XXXXX XX
PRESS ENTER TO CONTINUE
7_
IS THE FIRST CHARACTER OF YOUR
ERROR CODE A 4?
NO Go to page 3-200-32
YES
3-200-30 Maintenance Information