Kyocera 300ci Service Manual page 282

2JZ/2JX/2JV/2H7-1
(5) The background is colored.
Copy example
Defective
develop-
ing bias
output.
Defective color calibration.
(6) A white line appears longitudinally.
Copy example
Foreign matter in the developing unit.
Dirty transfer belt.
Dirty transfer roller.
Dirty shading plate.
Dirty scanner mirror.
Dirty LSU slit glasses.
Dirty contact glass.
(7) A line appears longitudinally.
Copy example
Dirty contact glass.
Dirty slit glass.
Dirty or flawed drum.
Deformed or worn cleaning blade of
the drum unit.
Dirty scanner mirror.
Dirty lens of ISU.
Worn transfer belt.
Defective transfer roller.
1-4-64
Causes
Defective developing
unit.
Defective main high volt-
age PWB.
Defective high voltage
control PWB.
Defective engine PWB.
Causes
Causes
Check procedures/corrective measures
Run maintenance mode U089 to output four-color bar PG,
check the output status of the four colors, and replace the
developing unit for any faulty color (see page 1-3-51 and
page 1-5-34).
Replace the main high voltage PWB.
Replace the high voltage control PWB.
Replace the engine PWB.
Perform gray adjustment.
Check procedures/corrective measures
Run maintenance mode U089 to output four-color bar PG,
check the output status of the four colors, and replace the
developing unit for any faulty color (see page 1-3-51 and
page 1-5-34).
Clean the transfer belt. Replace the transfer belt unit if it is
extremely dirty (see page 1-5-37).
Clean the transfer roller. Replace the transfer roller if it is
extremely dirty (see page 1-5-39).
Clean the shading plate.
Clean the scanner mirror.
Clean the LSU slit glasses.
Clean the contact glass.
Check procedures/corrective measures
Clean the contact glass.
Clean the slit glass.
Perform the drum refresh operation.
If the drum is flawed, replace the drum unit (see page 1-5-
35).
Replace the drum unit (see page 1-5-35).
Clean the scanner mirror.
Clean lens of ISU.
Replace the transfer belt unit (see page 1-5-37).
Replace the transfer roller (see page 1-5-39).