7.3.11 Uneven density in sub scan di
A. Typical faulty images
yp
B. Troubleshooting procedure
Step
1
The periodic 35 mm band has occurred. (
Roll)
2
The surface of the OPC drum is scratche
3
Dirty on the outside.
4
Is abnormality found in the cam gear?
5
The problem has been eliminated through
checks of steps up to 4.
Service Manual
y
g
Check item
7. Troubles
shooting
rection (Horizontal Band)
(Magnetic
ed.
h the
7-1
43
Action
Change imaging unit.
Change imaging unit.
Clean.
Change transfer belt unit.
Change LSU.
Change HVPS board.
SAMSUNG ELECTRONICS