The Background Is Colored; White Streaks Are Printed Vertically; Black Streaks Are Printed Vertically - Kyocera TASKalfa 4500i Service Manual

(4) The background is colored.

Print example
Deteriorated toner.
Defective
main char-
ger output.

(5) White streaks are printed vertically.

Print example
Foreign object in one of the
developer units.
Dirty transfer belt.
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.
Dirty CCD sensor.
Worn transfer belt.
Defective transfer roller.
Dirty scanner mirror.
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 1-5-28).
Clean the transfer belt. Replace the transfer belt unit if it is
extremely dirty (see page 1-5-35).
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 (Refer to operation guide).
Flawed drum. Replace the drum unit (see page 1-5-29).
Replace the drum unit (see page 1-5-29).
Clean lens of ISU.
Clean surface glass of CCD sensor.
Replace the transfer belt unit (see page 1-5-35).
Replace the transfer belt unit (see page 1-5-35).
Clean the scanner mirror.
Check procedures/corrective measures
Perform the drum refresh (Refer to operation
guide).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
High voltage PWB (YC2) and engine PWB
(YC16)
Replace the high voltage PWB
(see page 1-5-52).
Replace the engine PWB (see page 1-5-47).
Check procedures/corrective measures
Check procedures/corrective measures
1-4-67
2LL/2LJ/2LH