Horizontal Lines - Samsung SCX-8030ND Series Service Manual

7.3.2 Horizontal Lines

A. Typical faulty images yp y
B. Troubleshooting procedure
Step Section
1 Image check
2 Imaging unit
3
4
5
6 LSU
7
8 Scanner
9
10
11
Service Manual
SCX-8030/8040 series
7.Troubles
g
Check item
A white line or black in
direction is sharp.
The surface of the OPC
scratched.
Dirty on the outside.
Contact terminals make
connection between ea
unit and machine.
Developing bias contac
makes good connection
The surface of the LSU
dirty.
The problem has been
through the checks of s
Original is damaged or
DADF pad is dirty.
Original glass is dirty.
Remove lens cover by
screws. Check CCD len
against contamination o
objects. objects
shooting
m Result
main scan Yes
C drum is Yes
Yes
No
e good
ach imaging
ct terminal No
n.
U window is Yes
eliminated No
steps up to 6.
dirty. Yes
Yes
Yes
undoing 2 Yes
ns surface
or foreign
7-1 12
Action
Clean contact terminals.
Change imaging unit.
Clean.
Clean contact terminals.
Clean contact terminal
and check terminal
position. position
Clean the LSU.
Change LSU.
Change original.
Clean or replace the pad.
Wipe the surface clean
with a soft cloth.
Clean the contaminated
part.
Caution
Fragile parts!
SAMSUNG ELECTRONICS
Version 0.05