Lexmark C920 Service Manual page 106

5056-XXX
Problem
The page has 100% coverage
of one color.
Light lines or streaks appear on
the printed page.
The page is blank.
Toner smears or rubs off the
page.
2-64
Service Manual
Action
Be sure the affected photodevelopers are completely installed in the
printer.
Replace the photodevelopers. If the page is black, replace just the black
photodeveloper. If the page is another color, replace all three of the
color photodevelopers. If this does not fix the problem, go to
print" on page 2-67.
Clean the LEDs.
Make sure the affected photodeveloper is completely installed in the
printer.
Remove the affected toner cartridge, and gently shake it back and forth
to distribute the toner evenly. Reinsert the toner cartridge, and try
printing the job again.
Replace the affected toner cartridge.
Replace the photodevelopers. If the problem only occurs when printing
black, replace just the black photodeveloper. If the problem occurs
when printing one of the colors, replace all three of the color
photodevelopers and the transfer belt. If the problem remains, go to
"Uneven printing" on page
Be sure the affected print unit is completely installed in the printer.
Replace the affected toner cartridge. If the problem remains, go to
image" on page 2-66.
Be sure you're using recommended paper or media.
Be sure you have selected the correct Paper Weight setting for the
media you're using.
Be sure the top cover is completely closed and both sides are snapped
shut.
You may need to replace the fuser.
2-67.
"Black
"No