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White or black line •Either the print cartridges
are defective, the image
transfer unit and transfer
roller are defective, or the
fuser is defective.
1First, replace the print cartridges. See
Replacing print cartridges.
2If you still have the problem, replace the
image transfer unit and transfer roller.
See Replace the image transfer unit
and transfer roller.
3If you still have the problem, replace the
fuser. See Replacing the fuser.
Streaked horizontal lines •The print cartridges, the
transfer roller, image
transfer unit, or fuser may
be defective, empty, or
worn.
•Replace the print cartridges, the transfer
roller, the image transfer unit, or fuser as
needed. See Replacing print
cartridges, Replace the image
transfer unit and transfer roller, and
Replacing the fuser for more
information.
Symptom Cause Solution