Epson EPL-N2000 User Manual page 107

Check Serial I/F
Serial printing is specified for the current print job, but you have
not configured printer settings. Reset the printer (press ALT and
Continue simultaneously), then set parity, baud rate, number of
data bits, and number of stop bits to match your computer's
serial settings. You can change serial printer settings using
SelecType (see "Serial Menu" in Chapter 3) or the Remote
Control Utility (see the Technical Information manual).
Duplex Mem Overflow
There is not enough memory for duplex printing, so the printer
prints only on the top side and ejects the paper. Either reset the
printer (press ALT and Continue at the same time); or turn on
Auto Cont in the SelecType Config menu, then press Continue.
Duplex Print Was Off
The printer cannot print in duplex mode for one of the following
reasons:
1. Duplex mode is off. Turn on the Duplexing option in the
printer driver (or Duplex in the SelecType Printing menu).
To clear the message, press Continue, or reset the printer.
2. Paper Type in the SelecType Config menu is set to a value
other than Normal. Set this option to Normal, then press
Continue.
3. Page Format in the printer driver (or Page Size in the
SelecType Printing menu) is set to a paper size that is not
supported by the Duplex Unit. Set paper size to one of the
following: A3, B4, F4, A4, B5, International B5, A5, Ledger,
Legal, GLG, Letter, GLT, Executive, or HLT. Then press
Continue or reset the printer.
4. The Duplex Unit is not installed. Install the unit.
Troubleshooting 6-3