IBM 3270 Maintenance Manual page 250

Press Enter to begin the test. An error message
similar to the one shown below may appear.
0:06:21
ERROR -
PRINTER ADAPTER 432 S
PRESS ENTER TO CONTINUE
DID AN ERROR MESSAGE APPEAR?
NO Remove the Printer Adapter wrap plug.
You may want to run additional tests on
the printer attached to this adapter (see
PIC 3-1400-1, "Graphics Printer"). Go to
page 3-900-9
YES
Replace the Printer Adapter (see Section
5, "Removal/Replacement and
Adjustments").
October 1984 3-900-5