Solving Problems with Printing Quality 91
Dark tones
are
uneven.
The toner in the toner
cartridges is uneven. Remove the toner cartridges and gently rock
them five or six times to redistribute the toner.
Then, reinstall the cartridges.
The OPC belt cartridge
is damaged. Remove the OPC belt cartridge and check for
damage. If necessary, replace it.
There are
toner
smudges or
residual
images.
Toner cartridge misin-
stalled or defective. If the toner smudges are on only the front of
the page:
„Remove the toner cartridges and gently
rock them five or six times to redistribute
the toner. Then, reinstall the cartridges.
„One or more toner cartridges may be defec-
tive. Check the toner cartridges. Install new
ones, if necessary.
The image transfer
roller needs cleaning. If toner smudges are on the front

and

back of
the page:
„Open the printer front cover once and close
it again to clean the image transfer roller.
If toner smudges are on the back of the page:
„Replace the cleaning roller.
„If that doesn’t work, replace the transfer
roller.
If the image of the

previous

page comes out
lightly:
„Clean the cleaning roller and reinstall it.
There are
dark spots
on the
image.
The fuser oil roller is
dirty or worn. Remove the fuser oil roller and check the roller
surface. If it is very dirty, replace it.
The transfer belt is
defective. Remove the transfer belt and check for dam-
age. If necessary, replace it.
The OPC belt is
defective. Remove the OPC belt cartridge and check for
damage. If necessary, replace it.
Symptom Cause Solution