Kyocera KM-4230 Service Manual page 453

2A3/4
(7) A black line appears
laterally.
Causes
1. Flawed drum.
2. Dirty developing section.
3. Leaking main charger housing.
(8) One side of the copy
image is darker than
the other.
Causes
1. Dirty main charger wire.
2. Defective exposure lamp.
3-6-8
Causes
1. Flawed drum.
2. Dirty developing section.
3. Leaking main charger housing.
Check procedures/corrective measures
Replace the drum (see page 3-3-45).
Clean any part contaminated with toner or
carrier in the developing section.
Clean the main charger wire, grid and shield.
Causes
1. Dirty main charger wire.
2. Defective exposure lamp.
Check procedures/corrective measures
Clean the wire or, if it is extremely dirty,
replace it.
Check if the exposure lamp light is distributed
evenly. If not, replace the exposure lamp
(see page 3-3-23).