1-4-84
(8) Uneven density longitudinally.
Print example
Cause of trouble
1. Dirty LSU inside
2. The transfer roller is not pressed against the drum properly.
3. Drum condensation.
Defective part
Check description
Corrective Action
1
Transfer roller unit
Check that the transfer roller unit
is properly fit.
1. If it is not fixed properly, fix it properly.
2. If the rear cover has not been cloed, check
how the conveying guide is locked and
open the conveying guide once, then
close.
3. Replace the transfer roller unit.
(see page 1-5-38)
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. Install a cassette heater.
3. Replace the drum unit. (see page 1-5-36)
3
Developer unit
Check that toner is evenly lay-
ered on the developer roller.
Replace the developer unit.. (see page 1-5-30)
4
LSU
The emission of laser dispersed
from the LSU is not even. (Mirror
is dropped off inside.)
Replace the LSU. (see page 1-5-25)
Service Manual
Y116540
-5
Summary of Contents for d-Copia 4003MF
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