2GM
1-5-18
Causes Check procedures/corrective measures
1. Dirty contact glass.
2. Dirty or flawed drum.
3. Deformed or worn cleaning blade.
4. Dirty scanner mirror.
(6) A black line appears
longitudinally.
Causes
1. Dirty contact glass.
2. Dirty or flawed drum.
3. Deformed or worn cleaning blade.
4. Dirty scanner mirror.
Clean the contact glass.
Replace the process unit.
Replace the process unit.
Clean the scanner mirror.
Causes Check procedures/corrective measures
1. Dirty main charger wire.
2. Defective exposure lamp.
Causes Check procedures/corrective measures
1. Flawed drum.
2. Dirty developing section.
3. Leaking main charger housing.
(7) A black line ap-
pears laterally.
Causes
1. Flawed drum.
2. Dirty developing section.
3. Leaking main charger housing.
(8) One side of the
print image is
darker than the
other.
Causes
1. Dirty main charger wire.
2. Defective exposure lamp.
Replace the process unit.
Replace the process unit.
Replace the process unit.
Replace the process unit.
Check if the exposure lamp light is distributed evenly. If not, replace
the exposure lamp (see page 1-6-34).
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