Star LC-90 User Manual page 58

52 Troubleshooting
Problem
Text and graphics are
malformed.
Print quality is poor.
Forms are smudged.
Printing is too dark.
Printer case is hot.
Printer makes excessive
noise.
Possible Cause
The print head is damaged.
The printer is not set up
correctly for the thickness of
paper being used.
The ribbon is jammed,
twisted, or not set correctly
between the print head and
the print head shield.
Print head shield is damaged
or missing.
The printer's air vents are
blocked or obstructed.
The front cover is removed.
The printer is vibrating.
Recommended Action
Return the printer to your
dealer for repair.
Set up the printer for the
paper thickness you are
using. See "Adjusting for
paper thickness" on page 40.
Make sure that the ribbon
cartridge is installed
correctly. See "Installing the
ribbon cartridge" on page 5.
Return it to your dealer for
repair.
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 is
possible. If the problem
persists, return the printer to
your dealer for repair.
Replace the front cover.
Move any objects that are
touching the printer.
Make sure that the printer is
on a level steady surface.