Problems And Solutions - Epson LQ-670 User Manual

3. Open a software program and send a print job to the printer.
Your printer prints all the codes it receives in hexadecimal
format.
By comparing the characters printed in the right column
with the printout of the hexadecimal codes, you can check
the codes being received by the printer. If characters are
printable, they appear in the right column as ASCII
characters. Nonprintable codes, such as control codes, are
represented by dots.
4. To turn off hex dump mode, press the PAUSE button, eject
the printed page(s), and then turn off the printer.

Problems and Solutions

This section divides printer problems into four categories:
Power supply . . . . page 7-7
Paper handling . . . page 7-8
Operation . . . . . . page 7-16
Printout . . . . . . . page 7-18
See the section for the type of problem you have and look for
the description of your problem. The most likely causes and
solutions are listed first, so try the solutions in the order in
which they appear.
7-6
Troubleshooting