Lexmark Forms Printer 2491 User's Guide - Page 137

cartridge. See Removing, If you are using

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Printer problems (continued) Problem Probable cause Action Printer sounds as if it is Forms thickness lever is set See "Setting the forms printing but doesn't print; too high for the type of thickness lever" on page 44. printing is light. paper you are using. • Ribbon is jamming, is twisted, or is not between the printhead and the ribbon shield. • Ribbon is out of ink. • Make sure the ribbon cartridge is correctly installed and securely snapped down on the carrier. • Adjust the ribbon density control knob. See "Is print too light?" on page 113 for more information. • Printer ribbon is out of ink. Replace the ribbon cartridge. See "Removing the ribbon cartridge" on page 142. Printing is unstable; wrong • If you are using a • Make sure the printer cable characters print; left grounded or shielded is properly shielded and margin changes; printing printer cable, it may not correctly connected at both stops. be attached correctly. ends. • Wrong driver in software. • Select the correct driver. See "Setting up your Windows and DOS application software" on page 17. Troubleshooting 133

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133
Troubleshooting
Printer sounds as if it is
printing but doesn’t print;
printing is light.
Forms thickness lever is set
too high for the type of
paper you are using.
See “Setting the forms
thickness lever” on page 44.
•
Ribbon is jamming, is
twisted, or is not
between the printhead
and the ribbon shield.
•
Ribbon is out of ink.
•
Make sure the ribbon
cartridge is correctly
installed and securely
snapped
down on the
carrier.
•
Adjust the ribbon density
control knob. See “Is print
too light?” on page 113 for
more information.
•
Printer ribbon is out of ink.
Replace the ribbon
cartridge. See “Removing
the ribbon cartridge” on
page 142.
Printing is unstable; wrong
characters print; left
margin changes; printing
stops.
•
If you are using a
grounded or shielded
printer cable, it may not
be attached correctly.
•
Wrong driver in
software.
•
Make sure the printer cable
is properly shielded and
correctly connected at both
ends.
•
Select the correct driver. See
“Setting up your Windows
and DOS application
software” on page 17.
Printer problems
(continued)
Problem
Probable cause
Action