Samsung CLX-9350ND Service Manual page 491

7.3.2 Horizontal white band / dark ban
A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Image check
2 Imaging unit
3
4
5
8 Scanner
9
10 Scanner
11
12
Service Manual
CLX-9250/9350 series
7. Troubles
Horizontal white band
Check item
A white line or black in
direction is sharp.
The surface of the OPC
scratched. t h d
Dirty on the outside.
Contact terminals make
connection between ea
imaging unit and mach
Developing bias contac
makes good connection k d
Original is damaged or
DADF pad is dirty.
Original glass is dirty.
The adjustment value f
Position : Leading Edge
within the specified ran
Remove lens cover by
screws. Check CCD len
against contamination o
objects. j
shooting
nd
Horizontal color band
m Result
main scan Yes
C drum is Yes
Yes
e good No
ach
ine.
ct terminal No
ti n.
dirty. Yes
Yes
Yes
for [Image No
e] falls
ge.
undoing 2 Yes
ns surface
or foreign
7-1 51
Action
Clean contact terminals.
Change imaging unit.
Clean.
Clean contact terminals.
Clean contact terminal
and check terminal d h k t i l
position.
Change original.
Clean or replace the pad.
Wipe the surface clean
with a soft cloth.
Readjust.
Clean the contaminated
part.
Caution
Fragile parts! Fragile parts!
SAMSUNG ELECTRONICS