White Streaks Are Printed Vertically; Black Streaks Are Printed Vertically; Streaks Are Printed Horizontally - Kyocera TASKalfa 3050ci Service Manual

(5) White streaks are printed vertically.

Print example
Foreign object in one of the
developer units.
Dirty transfer belt.
Dirty transfer roller.
Dirty shading plate.
Dirty scanner mirror.
Dirty LSU slit glasses.
Dirty contact glass.

(6) Black streaks are printed vertically.

Print example
Dirty contact glass.
Dirty slit glass.
Dirty or flawed drum.
Deformed or worn cleaning
blade in the drum unit.
Dirty lens of ISU.
Worn transfer belt.
Defective transfer roller.
Dirty scanner mirror.

(7) Streaks are printed horizontally.

Print example
Dirty or flawed drum.
Dirty developer section.
Poor contact of grounding ter-
minal of drum unit.
Causes
Run maintenance mode U089 to output four-color bar PG,
check the output status of the four colors, and replace the
developer unit for any faulty color (see page 1-5-36).
Clean the transfer belt. Replace the transfer belt unit if it is
extremely dirty (see page 1-5-41).
Clean the transfer roller. Replace the transfer roller if it is
extremely dirty (see page 1-5-43).
Clean the shading plate.
Clean the scanner mirror.
Perform the laser scanner cleaning.
Clean the contact glass.
Causes
Clean the contact glass.
Clean the slit glass.
Perform the drum refresh.
Flawed drum. Replace the drum unit (see page 1-5-36).
Replace the drum unit (see page 1-5-36).
Clean lens of ISU.
Replace the transfer belt unit (see page 1-5-41).
Replace the transfer roller (see page 1-5-43).
Clean the scanner mirror.
Causes
Perform the drum refresh.
Flawed drum. Replace the drum unit (see page 1-5-36).
Clean any part contaminated with toner in the developer
section.
Check the installation of the drum unit. If it operates incor-
rectly, replace it (see page 1-5-36).
Check procedures/corrective measures
Check procedures/corrective measures
Check procedures/corrective measures
1-4-91
2LK/2LN/2LM/2LC