2JZ/2JX/2JV/2H7-1
1-4-63
(5) The background is colored.
(6) A white line appears longitudinally.
(7) A line appears longitudinally.
Copy example Causes Check procedures/corrective measures
Defective
develop-
ing bias
output.
Defective developing
unit.
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 1-3-46 and
page 1-5-34).
Defective main high volt-
age PWB.
Replace the main high voltage PWB.
Defective high voltage
control PWB.
Replace the high voltage control PWB.
Defective engine PWB. Replace the engine PWB.
Defective color calibration. Perform gray adjustment.
Copy example Causes Check procedures/corrective measures
Foreign matter in the developing unit. 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 1-3-46 and
page 1-5-34).
Dirty transfer belt. Clean the transfer belt. Replace the transfer belt unit if it is
extremely dirty (see page 1-5-37).
Dirty transfer roller. Clean the transfer roller. Replace the transfer roller if it is
extremely dirty (see page 1-5-39).
Dirty shading plate. Clean the shading plate.
Dirty scanner mirror. Clean the scanner mirror.
Dirty LSU slit glasses. Clean the LSU slit glasses.
Dirty contact glass. Clean the contact glass.
Copy example Causes Check procedures/corrective measures
Dirty contact glass. Clean the contact glass.
Dirty slit glass. Clean the slit glass.
Dirty or flawed drum. Perform the drum refresh operation.
If the drum is flawed, replace the drum unit (see page 1-5-
35).
Deformed or worn cleaning blade of
the drum unit.
Replace the drum unit (see page 1-5-35).
Dirty scanner mirror. Clean the scanner mirror.
Dirty lens of ISU. Clean lens of ISU.
Worn transfer belt. Replace the transfer belt unit (see page 1-5-37).
Defective transfer roller. Replace the transfer roller (see page 1-5-39).
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