Konica Minolta BIZHUB C20 User Manual page 296

Symptom
Image is too
light; there is
low image
density.
Image is too
dark.
282
Cause
Laser lens is dirty.
The copy density is
set too light.
The media is moist
from humidity.
There is not much
toner left in the car-
tridge.
One or more of the
toner cartridges may
be defective.
Media type is set
incorrectly.
The copy density is
set too dark.
The document was
not pressed close
enough against the
original glass.
One or more of the
toner cartridges may
be defective.
One or more of the
imaging units may be
defective.
Solving Problems with Printing Quality
Solution
Clean the laser lens.
Select a darker copy density.
Remove the moist media and replace
with new, dry media.
Replace the toner cartridge.
Remove the toner cartridges and
check for damage. If it is damaged,
replace it.
When printing envelopes, labels, letter
head, postcards, thick stock, glossy
media, or transparencies, specify the
appropriate media type in the printer
driver.
Select a lighter copy density.
Position the document so that it is
pressed close enough against the orig-
inal glass. For details on positioning
the document on the original glass,
refer to "Placing a document on the
original glass" on page 135.
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.