Image Is Too Light; The Background Is Colored; White Streaks Are Printed Vertically - Kyocera FS-6525MFP Service Manual

(3) Image is too light.

Print example
Defective
transfer
charger out-
put.
Insufficient toner.
Deteriorated toner.

(4) The background is colored.

Print example
Defective
main
charger out-
put.
Deteriorated toner.

(5) White streaks are printed vertically.

Print example
Foreign matter in the devel-
oper unit.
Dirty shading plate.
Adhesion of soiling to transfer
roller.
Dirty LSU dust shield glass.
Causes
Defective connector cable
or poor contact in the con-
nector.
Defective high voltage
PWB.
Defective engine PWB.
Causes
Defective connector cable
or poor contact in the con-
nector.
Defective high voltage
PWB.
Defective engine PWB.
Causes
Check if the magnetic brush is formed uniformly. Replace
the developer unit if any foreign matter (see page 1-5-16).
Clean the shading plate.
Clean the transfer roller. Replace the transfer roller if it is
extremely dirty (see page 1-5-20).
Perform the LSU dust shield glass cleaning.
Check procedures/corrective measures
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
High voltage PWB and engine PWB (YC10)
Replace the high voltage PWB
(see page 1-5-37).
Replace the engine PWB (see page 1-5-35).
If the display shows the message requesting
toner replenishment, replace the container.
Perform the drum refresh operation.
Perform the gradation adjustment in a system
menu.
Check procedures/corrective measures
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
High voltage PWB and engine PWB (YC10)
Replace the high voltage PWB
(see page 1-5-37).
Replace the engine PWB (see page 1-5-35).
Perform the drum refresh operation.
Check procedures/corrective measures
1-4-23
2MW/2MX