Epson EPL-N2750 Reference Manual page 188

Cover E Open
Cover E, on the back of the 5-Bin Multi-Purpose Unit, is open. Pull
the latch on cover E and then close the cover firmly.
Cover F Open
Cover F, on the paper guide of the 10-Bin Multi-Purpose Unit, is
open. Pull the latch on cover F and then close the cover firmly.
Cover G Open
Cover G, on the back of the 10-Bin Multi-Purpose Unit, is open.
Move the 10-Bin Multi-Purpose Unit away from the printer, then
pull the latch on cover G and close the cover firmly.
Duplex Mem Overflow
There is not enough memory for duplex printing. The printer
prints only on the top side and ejects the paper. To correct this
error, follow the directions below.
If Auto Cont is set to Off in the SelecType Config Menu, (1) press
the Continue button or (2) reset the printer by pressing the ALT
and Reset buttons at the same time.
If Auto Cont is set to On in the SelecType Config Menu, the error
is corrected automatically.
Face-down Full
The face-down tray is full of printed sheets. Remove the sheets
from the face-down tray and press Continue.
Format Error ROM A
A ROM module which is not formatted is installed in slot A. If the
ROM had been written to, it is possible that the writing was not
completed. Also, the ROM's memory may no longer be accessible,
in which case you should replace it.
Troubleshooting
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