2N8/2N7
1-4-214
(8) Uneven density longitudinally.
Print example Cause of trouble
1. Dirty LSU inside
2. The transfer belt is not pressed against the drum properly.
3. Drum condensation.
Defective part Check description Corrective Action
1
Transfer belt unit Check that the transfer belt unit
is properly fit.
1. If it is not fixed properly, fix it properly.
2. If the conveying unit has not been closed,
check how the conveying guide is locked
and open the conveying guide once, then
close.
3. Replace the transfer belt unit.
(see page 1-5-65)
2
Drum unit 1. Check toner is evenly
layered on its surface.
2. Check whether the device
has been operated under a
highly humid environment.
1. Execute drum refreshing.
2. Selects the Dew Mode by U148 Drum
Referesh Mode. (see page 1-3-88)
3. Install a cassette heater.
4. Replace the drum unit. (Perform U119)
(see page 1-5-57)
3
Developer unit Check that toner is evenly lay-
ered on the developing roller.
Replace the developer unit. (see page 1-5-56)
4
LSU The emission of laser dispersed
from the LSU is not even. (Mirror
is dropped off inside.)
Replace the LSU.(Perform U119)
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