Epson EPL-N1600 Reference Manual page 150

Insert Imaging Crtg
There is no Imaging Cartridge inserted in the printer. Install a
Imaging Cartridge (see "Replacing the Imaging Cartridge", on
page 6-30).
Insert LC1
The cassette tray is not inserted properly. Insert the tray.
Jam in Duplex Tray
A paper jam has occurred inside the duplex unit (see "Paper
jammed in the vertical unit of the duplex unit", on page 6-10).
Jam in Duplex Cover
A paper jam has occurred inside the duplex unit (see "Paper
Jammed in the duplex unit", on page 6-11).
Manual Feed xxx yyyy
The printer is waiting for media to be inserted manually. The xxx
and yyyy refer to the paper source and the paper size.
Mem Overflow
The printer has insufficient memory available for the current task.
To correct the error, press the Continue button on the control
panel. If the message remains, reset the printer as described on
page 6-26. You can also clear this message by turning the printer
off, waiting 10 seconds, and then turning it back on.
6-24
Troubleshooting and Maintenance