Uneven Density Longitudinally - Kyocera ECOSYS M3040dn Service Manual

(8) Uneven density longitudinally.

Print example
Defective part
Transfer roller unit
1
Drum unit
2
Developer unit
3
LSU
4
1. Dirty LSU inside
2. The transfer roller is not pressed against the drum properly.
3. Drum condensation.
Check description
Check that the transfer roller unit
is properly fit.
1. Check toner is evenly
layered on its surface.
2. Check whether the device
has been operated under a
highly humid environment.
Check that toner is evenly lay-
ered on the developer roller.
The emission of laser dispersed
from the LSU is not even. (Mirror
is dropped off inside.)
Cause of trouble
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)
1. Execute drum refreshing.
2. Install a cassette heater.
3. Replace the drum unit. (see page 1-5-36)
Replace the developer unit.. (see page 1-5-30)
Replace the LSU. (see page 1-5-25)
1-4-83
2NM/2NX/2NY/2NZ/2P0/2P6-1
Corrective Action