Epson EPL-N3000 Reference Manual page 295

The printer does not print normally via the network interface.
Cause
The Data Format setting,
which is accessed by clicking
Advanced on the PostScript
sheet of the printer's
Properties dialog box, is
different from the data format
setting specified in the
application.
The computer is connected to
the network using AppleTalk
in a Windows NT 4.0/2000
environment, and the Send
CTRL+D Before Each Job or
Send CTRL+D After Each Job
setting on the Device Settings
sheet of the printer's
Properties dialog box is set to
Yes.
The network connection is
something other than
AppleTalk, and the Data
Format setting is not set to
ASCII data.
The print data is too large.
282
Troubleshooting
What to do
If the file is created in an application that
allows you to change the data format or
encoding, such as Photoshop, make sure
that the setting in the application
matches that in the printer driver.
Make sure that both the Send CTRL+D
Before Each Job and Send CTRL+D
After Each Job settings are set to No.
If the network connection is something
other than AppleTalk, make sure that
the Data Format setting is set to ASCII
data or Tagged binary communications
protocol.
Click Advanced on the PostScript sheet
of the printer's Properties dialog box,
and then change the Data Format setting
from ASCII data (default) to Tagged
binary communications protocol.