Epson PLQ-20 Reference Manual page 110

The printer does not print when the computer sends data.
Cause
The printer is paused.
The interface cable is not
plugged in securely.
Your interface cable does not
meet the printer and/or
computer specifications.
Your software is not properly
set up for your printer.
The printer makes noise, but nothing prints or printing stops
abruptly.
Cause
The ribbon has too much slack,
the ribbon has come loose, or
the ribbon cartridge is not
installed properly.
What to do
Press the Offline button to turn off the
Power light.
Check that both ends of the cable
between the printer and the computer
are plugged in securely. If the cable is
connected correctly, run a self-test as
described in "Printing a Self-Test" on
page 102.
Use an interface cable that meets the
requirements of both the printer and
computer. See "Electronic" on page 150
and your computer documentation.
Select your printer from the Windows
desktop or in your application. If
necessary, install or reinstall the printer
driver software. For the information on
installing the software, see "Installing
the Printer Software" on page 13.
What to do
Remove any slack in the ribbon by
turning the ribbon-tightening knob, or
reinstall the ribbon cartridge as
described in the section under
"Replacing the ribbon cartridge" on
page 132.
Chapter 6 Problem Solver 110