Konica Minolta 4650EN User Manual page 217

Solving Problems with Printing Quality
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Symptom Cause
There are One or more of the
toner imaging units may be
smudges or defective or installed
residual incorrectly.
images.
There are The media path is
toner dirty with toner.
smudges on
One or more of the
the back side
imaging units may be
of the page
defective.
(whether or
not it has
been
duplexed).
Abnormal The laser lens is dirty. Clean the laser lens.
areas (white,
A imaging unit may
black, or
be defective.
color) appear
in a regular
pattern.
Solution
Remove the imaging units and check
them for damage. If one is damaged,
replace it.
Print several blank sheets and the
excess toner should disappear.
Remove the imaging units and check it
for damage. If it is damaged, replace it.
Remove the imaging unit with the color
causing the abnormal image. Replace
it with a new imaging unit.
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