Black Dots - Kyocera ECOSYS P2235dw Service Manual

(2-2) Black dots

Step Check description
1 Executing Drum refresh
2 Replacing the drum unit
3 Cleaning the main charger
wire
4 Changing the settings
5 Checking the developer
unit
Assumed cause
The drum surface is dirty.
There are some scratches
on the drum surface.
The main charger wire sur-
face is dirty.
Developer bias leaks.
The developer roller and
magnet roller are dirty or
faulty.
7-16
2RV/2RW/2RX/2RY/3RA-3
Measures
Execute Drum refresh.
Replace the drum unit.
Clean the main charger wire
surface. If not repaired,
replace the main charger
unit.
Execute [Altitude Adjustment]
at [System Menu/Counter]
key > [Adjustment/Mainte-
nance] > [Service Settings] to
set the proper mode.
Clean the developer roller. If
not repaired, replace the
developer unit.
Reference