Kyocera TASKalfa 7002i Service Manual page 910

Content of Engine Factors (Paper conveying cause: Transfer, Fuser and Separation)
(4-1) Colored background
Step Check description
1 Checking the transfer bias
contact
2 Checking the transfer belt
unit
(4-2) Black spots appear on the image
Step Check description
1 Checking the transfer belt
unit
2 Checking the fuser unit
Assumed cause
The transfer bias contact is
deformed.
The transfer belt is dirty.
Assumed cause
The transfer belt is dirty or
scratched.
The fuser belt surface is
dirty or has some
scratches.
7-50
Measures
Correct the transfer bias con-
tact so that it securely
grounds to the terminal of the
conveying unit.
When the image failure
appears in the transfer belt
circumference interval, clean
the transfer belt. Then,
replace the transfer belt unit if
the image failure is not
cleared.
Measures
When the image failure
appears in the transfer belt
circumference interval, clean
the transfer belt. Then,
replace the transfer belt unit if
the image failure is not
cleared.
When the image failure
appears in the fuser belt cir-
cumference interval, clean
the fuser belt. If not repaired,
replace the fuser unit.
2WA/2NJ/2RK
Reference
Detaching
and Reat-
taching the
transfer
belt unit
Reference
Detaching
and Reat-
taching the
transfer
belt unit
Detaching
and Reat-
taching the
fuser unit