Epson Lq 300 User Guide

6.Insert the ribbon cartridge into the printer as shown; then
press both sides of the cartridge firmly to fit the plastic
hooks into the printer slots.
7.Turn the ribbon-tightening knob to help feed the ribbon into
place; it should not be twisted or creased.
8.Replace the printer cover.
After you install the color ribbon cartridge, run the self test as
shown on page 1-10.
Using the Printer2-37 

If the top or bottom edge of the characters in the self test are a
different color from the rest, adjust the ribbon angle with the
color ribbon adjustment lever. See page 3-12 for details.Note:When your print using the color ribbon, print speed my be reduced.
To switch to the black ribbon, remove the color ribbon and then
install the black ribbon as shown on page 1-6. To remove the
color ribbon, press down on the motor unit and pull out the
cartridge as shown below. You do not have to remove the
motor...

Chapter 3
TroubleshootingProblems and Solutions.......................
3-2Power Supply............................
3-2Power is not being supplied..................
3-2Printing................................
3-3The printer does not print...................
3-3The print is faint or uneven...................
3-4Dots are missing in printed characters or graphics.....
3-5Printed characters are not what you expected........
3-5The print position is not what you expected.........
3-6Paper...

Problems and SolutionsMost problems you may encounter while operating your
printer have simple solutions.
You can check the operation of your printer using the self test.
See “Running the Self Test” on page 1-10. If the self test works
properly, the problem probably lies in the computer, the
software, or the interface cable. If the self test does not work,
contact your dealer or qualified service person for assistance.
Note:If you are an experienced user or a programmer, you can print a
hexadecimal dump...

The lights come on briefly and then go off. The lights stay off
even when the power is turned on again.Check that the printer’s voltage rating matches the voltage of
your electrical outlet. If the voltages do not match, unplug the
printer and contact your dealer immediately. Do not reconnect
the power cord to an electrical outlet.
PrintingThe printer does not print
The Pause light is off but nothing is printed.Check that the software is installed properly for your printer,
as described on page 1-16....

The printer makes a strange noise, beeps once, and then abruptly
stops printing.Turn off the printer and check for a paper jam, a ribbon jam, or
other problems. Let the print head cool. Then try to print again.
If the printer still does not print correctly, contact your dealer.
The beeper sounds once and the Pause light comes on.An error has occurred. Turn off the printer and turn it on again.
If the Pa use light stays on, check for a paper jam or ribbon jam.
Turn the printer off and clear the jam.
If an...

Dots are missing in printed characters or graphics
A line of dots is missing in the printout.The print head is damaged. Stop printing and contact your
dealer to have the print head replaced.
Dots are missing in random positions.Either there is too much slack in the ribbon or the ribbon has
come loose. Reinstall the ribbon cartridge as described on
page 1-6.
Printed characters are not what you expected
The typestyles or characters you sent with your software did
not print.Check that the software is...

The print position is not what you expected
Printing starts too high or too low on the page, or the bottom part
of one page is printed at the top of the next page.See “Getting the results you expect” on page 2-6.
It is also possible to adjust the loading position using the LF/FF
button in the micro adjust mode. To use micro adjust, see
 Adjusting the loading position” on page 2-5.
Page length does not match the length of the paper.Check the page length set by your software and adjust it if
necessary.
If...

Paper Handling
Single sheets do not feed properlyPaper does not feed.Continuous paper may be left in the printer. Remove the
continuous paper. Set the paper-release lever to the single-
sheet position. Insert a new sheet.
Move the paper a little to the left.
Paper feeding is crooked or the paper jams.Turn off the printer and pull out the paper. Insert a new sheet
straight into the paper guide. Be sure you’re using the right
type of paper. See the paper specifications in the Appendix.
Check to see that...

Continuous paper does not feed proper/y
The tractor does not feed the paper.Check that the paper-release lever is pulled forward to the
continuous paper position. If not, move the lever to the correct
position.
The paper may have come off the tractor. Reattach the paper to
the tractor.
Paper feeding is crooked or the paper jams.Make sure the paper guide is in the upright position.
The position of your paper supply may be preventing it from
feeding straight. Make sure the paper supply is not obstructed....