Epson EPI-4000 User Manual page 174

Printing Problems
Problem
The printer does not
print or stops
printing (continued).
The light is off.
ON LINE
Print is faint or
uneven.
Dots are missing in
printed characters or
graphics.
Dots are missing in the
printed characters or
graphics even after you
perform the cleaning
cycle several times.
Troubleshooting
6-20
Solution
The printer may be off line and cannot
receive data. Press ON LINE to set the
printer on line (the ON LINE light goes
on>.
The print head nozzles may be clogged.
Press ON LINE to set the printer off line
and open the printer cover. Then press
SelecType to enter the SelecType mode.
After characters appear on the display,
press CLEANING once. The printer starts
the print head cleaning cycle (the
display reads CL). When the cycle is
complete, the printer goes off line
automatically. Close the printer cover
and press ON LINE to resume printing.
If the problem persists, try printing in
unidirectional mode. With the printer off
line, press DRAFT for more than three
seconds to enter unidirectional mode;
then press ON LINE to resume printing.
The print head may be damaged.
Contact your Epson dealer for
assistance.