Uneven Density Horizontally - Kyocera ECOSYS M3040dn Service Manual

(9) Uneven density horizontally.

Print example
Defective part
LSU
1
Charging roller
2
Developer unit
3
Transfer roller unit.
4
Fuser unit
5
1. Defective laser scanner unit.
2. Improper charging roller rotation
3. Improper contact on the developer unit terminals
Check description
Check the emission of laser is
even.
Check if the charing roller is
improperly mounted.
Check If the connecting termi-
nals of the developer bias is con-
taminated by toner.
1. Check if the transfer roller is
contaminated on its surface
or damaged.
2. Check if the connecting ter-
minals of high voltage are
dirty or deformed.
Check that the roller, its driving
unit, or the fusing pressure
release mechanism is deformed,
abraded, or damaged.
Cause of trouble
Replace the LSU. (see page 1-5-25)
1. Fix the charging roller properly.
2. Replace the charging roller.
(see page 1-5-36)
1. If the connecting terminals is dirty.
2. Replace the developer unit.
(see page 1-5-30)
1. Replace the transfer roller unit.
1. If the connector or terminals are dirty,
clean.If the connecting terminals are
deformed, correct for a proper conduction.
2. Replace the high voltage PWB.
If the roller, its driving unit, or the fusing pres-
sure release mechanism is deformed,
abraded, or damaged, replace the fuser unit.
1-4-84
2NM/2NX/2NY/2NZ/2P0/2P6
Corrective Action