Konica Minolta magicolor 7450 grafx - Manual (Page 200)

Solving Problems with Printing Quality 186
There are
toner
smudges or
residual
images. One or more of the
imaging units may be
defective or installed
incorrectly. Remove the imaging units and check
them for damage. If one is damaged,
replace it.
There are
toner
smudges on
the back side
of the page
(whether or
not it has
been
duplexed). The media transfer
roller is dirty. Clean the media transfer roller.
If you think the transfer roller should be
replaced, contact Technical Support
with the error information.
The media path is
dirty with toner. Print several blank sheets and the
excess toner should disappear.
One or more of the
imaging units may be
defective. Remove the imaging units and check
for damage. If it is damaged, replace it.
Abnormal
areas (white,
black, or
color) appear
in a regular
pattern. The laser lens is dirty. Clean the laser lens.
A imaging unit may
be defective.
Remove the imaging unit with the color
causing the abnormal image. Replace
it with a new imaging unit.
Symptom Cause Solution