White Streaks Are Printed Vertically; Black Streaks Are Printed Vertically; Streaks Are Printed Horizontally; Spots Are Printed - Kyocera FS-C5350DN Service Manual

(7) White streaks are printed vertically.

Print example
Foreign object in one of the develop-
ing units.
Adhesion of soiling to primary transfer
belt.
Dirty LSU protective glass.

(8) Black streaks are printed vertically.

Print example
Dirty or flawed drum.
Deformed or worn cleaning blade in
the drum unit.
Worn primary transfer belt.
Dirty main charger wire.

(9) Streaks are printed horizontally.

Print example
Flawed drum.
Dirty developing section.
Poor contact of grounding terminal of
drum unit.

(10) Spots are printed.

Print example
Dirty or flawed drum.
Deformed or worn cleaning blade in
the drum unit.
Flawed developing roller.
Dirty heat roller and press roller.
Causes
Causes
Causes
Causes
Check procedures/corrective measures
Check the image by using the test print of service mode. If the
white line appears on a particular page, replace the developer
for that color (See page 1-5-12).
Replace the intermediate transfer unit (See page 1-5-16).
Perform the LSU dust shield glass cleaning (See page 1-3-11).
Check procedures/corrective measures
Perform the drum surface refreshing (See page 1-3-12).
Flawed drum. Replace the drum unit (See page 1-5-14).
Replace the drum unit (See page 1-5-14).
Replace the intermediate transfer unit (See page 1-5-16).
Perform the main charger cleaning (See page 1-3-11).
Check procedures/corrective measures
Replace the drum unit (See page 1-5-14).
Clean any part contaminated with toner in the developing sec-
tion.
Check the installation of the drum unit. If it operates incor-
rectly, replace it (See page 1-5-14).
Check procedures/corrective measures
Perform the drum surface refreshing (See page 1-3-12).
Flawed drum. Replace the drum unit (See page 1-5-14).
Replace the drum unit (See page 1-5-14).
Replace the developing unit (See page 1-5-12).
Clean the heat roller and press roller.
2K8
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