Kyocera Copystar CS 3011i Service Manual page 365

(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.
Dirty laser scanner unit dust
shield glass.
Adhesion of foreign objects on
the laser beam path.
(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.
Defencive developer roller.
Dirty or flawed chager 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 1-5-18).
Clean the shading plate.
Perform the laser scanner unit dust shield glass cleaning.
Check adhesion of foreign objects on the laser beam path
and remove them if any.
Causes
Clean the contact glass.
Clean the slit glass.
Perform the drum refresh operation.
Flawed drum. Replace the drum unit (see page 1-5-21).
Replace the drum unit (see page 1-5-21).
Clean the developer roller. Or replace the developer unit.
Clearn the chager roller.
Or replace the chager roller unit (see page 1-5-23).
Clean the scanner mirror.
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 (YC19)
Replace the high voltage PWB
(see page 1-5-66).
Replace the engine PWB (see page 1-5-59).
Perform the drum refresh operation.
Check procedures/corrective measures
Check procedures/corrective measures
1-4-72
2RG/2RH