Epson EPL-N1200 Reference Manual page 156

Illegal AUX I/F Card indicates both the LocalTalk/Serial
module (set in LocalTalk) and the LocalTalk Type B I/F card
are installed simultaneously. Remove one of them.
Make sure the I/F card is listed in the table of installable ones
in Appendix A.
Paper does not feed from the optional lower paper cassette
Be sure you have selected the proper paper tray in your
software.
There may be no paper in the lower paper cassette. Load it
with paper.
Be sure that the lower paper cassette is properly installed and
that you have not tried to load it with too many sheets of
paper. The cassette can hold a maximum of 500 sheets of
2
75g/m (20 lb) paper.
The lower paper cassette may not be installed properly. See
Chapter 4 for instructions on installing the lower paper cassette.
7-15
Troubleshooting and Maintenance