Vertical White Streaks Or Bands Appear - Kyocera ECOSYS P2235dn Service Manual

(1-5) Vertical white streaks or bands appear

Image sample
Trouble location
1 LSU
2 Developer unit
3 Light path between
LSU and Drum
4 Drum unit
1. DP slit glass is dirty.
2. Foreign objects inside the developer unit.
3. Contamination inside the machine.
4. Dirty inside the drum unit.
Check
Check if the LSU slit glass is
dirty.
Check if there are foreign
objects in the developer unit.
Check if the light path is inter-
rupted by foreign objects such
as dust, toner, etc.
Check if the main charge wire is
dirty.
The drum has scratches.
Factor
1. Clean the?LSU slit glass if it is dirty.
2. Replace the LSU if it is dirty inside. (see
page 4-26)
Clean the developer unit or replace it. (see
page 4-10)
If there are foreign objects in the frame
between the developer unit and drum unit, and
on the seal, remove them.
Clean the main charge wire if it is dirty.
Replace the drum unit if it does not take the
dirty. (see page 4-11)
Replace the drum unit. (see page 4-11)
7-39
2RV/2RW/2RX/2RY/3RA-1
Measures