Epson EPL-N2000 Reference Manual page 132

The display panel stays blank when you turn the printer on.
Turn off the printer and check the power cable connections
between the printer and the electrical outlet; then turn the
printer back on.
If the electrical outlet is controlled by an outside source such as
a wall switch, make sure the switch is turned on or plug
another electrical device into the outlet to check whether the
outlet is operating properly.
The On Line light is on but nothing prints.
Your computer may not be properly connected to the printer.
Perform the procedure described in "Testing the
computer-to-printer connection" in the Getting Ready! booklet.
The interface cable may not be plugged in securely. Check both
ends of the cable between the printer and the computer.
Make sure that your interface cable meets the specifications for
the printer and computer.
If you are using the serial interface, set the baud rate, protocol,
data bit, and related settings. See your computer manual for the
correct settings and interface requirements.
If you are using the parallel interface, set the Speed setting (on
either the Parallel B or C menu) to match the value the
computer requires.
Make sure that your software is properly set up for your
printer.
The Imaging Cartridge may be empty. Replace it as described
at the end of this chapter.
6-6
Troubleshooting and Maintenance