Konica Minolta bizhub C25 User Manual page 296

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