Epson Stylus 800 User Manual page 55

The PAUSE light is off but nothing prints.
The interface cable may not be plugged in securely.
Check both ends of the cable between the printer and the
computer. Make sure your interface cable meets both the
printer and computer specifications.
Make sure that your software is properly set up for your
printer.
Printed output is not as expected.
If the printer does not print correctly, try the self test described
in Chapter 1. If the self test works properly, the printer is all
right, and the problem probably lies in the computer, the
application program, or the interface cable. If the self test does
not work, contact your dealer or a qualified service person.
Check the printer settings within your software program.
Use the hex dump mode to pinpoint communication problems
between the printer and your application program. To enter the
hex dump mode, hold down the LOAD/EJECT and FONT
buttons and turn on the printer. (Hold down the buttons until
the printer starts working; it takes a few seconds.) Then send
data from the computer. The printer prints the exact codes it
receives from the computer in hexadecimal format. You can
analyze this information to isolate problems.
The printer sounds like it is printing, but nothing prints.
The print head nozzles may be clogged. Hold down the ALT
button and press the PAUSE button for two seconds to clean the
print head. See "Cleaning the Print Head" earlier in this
chapter.
Maintenance and Troubleshooting 3-7