Star Micronics LC-8021 - Manual (Page 52)

46 Troubleshooting
Forms are smudged.
Printing is too dark.
The ribbon is jammed,
twisted, or not set correctly
between the print head and
the print head shield. Make sure that the ribbon
cartridge is installed
correctly. See “Removing the
protective materials” on
page 5.
Print head shield is damaged
or missing. Return it to your dealer for
repair.
Printer case is hot. The printer’s air vents are
blocked or obstructed. Switch off the printer and let
it cool. Check the air vents
on the bottom of the printer
to see if they are blocked.
Remove the obstruction if
possible. If the problem
persists, return the printer to
your dealer for repair.
Printer makes excessive
noise. The top cover is removed. Replace the top cover.
The printer is vibrating. Move any objects that are
touching the printer.
Make sure that the printer is
on a level steady surface.
Problem Possible Cause Recommended Action