4504,-4514..+1.+0,4514.+0.-1

1. Power off printer.
2. Confirm setup:
    • Serial cable connects
       printer to Macintosh
       modem port.
    • Test connector installed.
3. Power on printer and
    rerun test.
If setup is correct and this window reappears, replace I/O board.

Improper setup or faulty I/O board.

4504