2LK/2LN/2LM/2LC
1-4-96
(5) White streaks are printed vertically.
(6) Black streaks are printed vertically.
(7) Streaks are printed horizontally.
Print example Causes Check procedures/corrective measures
Foreign object in one of the
developer units.
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).
Dirty transfer belt. Clean the transfer belt. Replace the transfer belt unit if it is
extremely dirty (see page 1-5-41).
Dirty transfer roller. Clean the transfer roller. Replace the transfer roller if it is
extremely dirty (see page 1-5-43).
Dirty shading plate. Clean the shading plate.
Dirty scanner mirror. Clean the scanner mirror.
Dirty LSU slit glasses. Perform the laser scanner cleaning.
Dirty contact glass. Clean the contact glass.
Print 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.
Flawed drum. Replace the drum unit (see page 1-5-36).
Deformed or worn cleaning
blade in the drum unit.
Replace the drum unit (see page 1-5-36).
Dirty lens of ISU. Clean lens of ISU.
Worn transfer belt. Replace the transfer belt unit (see page 1-5-41).
Defective transfer roller. Replace the transfer roller (see page 1-5-43).
Dirty scanner mirror. Clean the scanner mirror.
Print example Causes Check procedures/corrective measures
Dirty or flawed drum. Perform the drum refresh.
Flawed drum. Replace the drum unit (see page 1-5-36).
Dirty developer section. Clean any part contaminated with toner in the developer
section.
Poor contact of grounding ter-
minal of drum unit.
Check the installation of the drum unit. If it operates incor-
rectly, replace it (see page 1-5-36).
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