Lexmark C920 User Manual page 146

Symptom
Print too light
Print too dark
Transparency print quality is poor
(Print has inappropriate light or dark spots,
toner is smeared, horizontal or vertical light
bands appear, or color does not project.)
Toner fog or background shading appears
on the page
Toner rubs off the paper easily when you
handle the sheets
Gray background
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Troubleshooting
Cause
• The Toner Darkness setting
is too light, RGB Brightness
is too bright, or RGB
Contrast is too high.
• You are using paper that
does not meet the printer
specifications.
• Color Saver is On.
• Toner is low.
• A toner cartridge is
defective or has been
installed in more than one
printer.
• The Toner Darkness setting
is too dark, RGB Brightness
is too dark, or RGB
Contrast is too high.
• A toner cartridge is
defective.
• You are using
transparencies that do not
meet the printer
specifications.
• The Paper Type setting for
the tray you are using is set
to something other than
Transparency.
• A toner cartridge is
defective or installed
incorrectly.
• The transfer belt is worn or
defective.
• A photodeveloper is worn or
defective.
• The fuser is worn or
defective.
• Toner is in the paper path.
• The Type setting is wrong
for the type of paper or
specialty media you are
using.
• The Weight setting is wrong
for the type of paper or
specialty media you are
using.
• The fuser is worn or
defective.
• The Toner Darkness setting
is too dark.
• A toner cartridge is
ABCDE
defective.
ABCDE
ABCDE
Solving print quality problems
Solution
• Select a different Toner Darkness
setting, RGB Brightness setting, or RGB
Contrast setting from the printer driver
before sending the job to print.
• Perform a Color Adjust in the Quality
Menu.
• Load paper from a new package.
• Avoid textured paper with rough finishes.
• Make sure the paper you load in the
trays is not damp.
• Make sure the printer's paper type and
paper weight settings match the type of
paper you are using.
• Turn Color Saver off.
• Replace the toner cartridge.
• Select a different Toner Darkness
setting, RGB Brightness setting, or RGB
Contrast setting from the printer driver
before sending the job to print.
• Replace the toner cartridge.
• Use only transparencies recommended
by the printer manufacturer.
• Make sure the Paper Type setting is set
to Transparency.
• Reinstall or replace the cartridge.
• Replace the transfer belt.
• Replace the photodeveloper (black
alone or all other colors at once).
• Replace the fuser.
• Call for service.
• Change Paper Type to match the paper
or specialty media you are using.
• Change Paper Weight from Plain to
CardStock (or other appropriate weight).
• Replace the fuser.
• Select a different Toner Darkness setting
from the printer driver before sending the
job to print.
• Replace the toner cartridge.
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