Samsung CLX-9250ND - Vertical White Band; Dark Band

7. Trouble
s
7.3.1 Vertical white band / Dark band
A. Typical faulty images
A.
Typical
faulty
images
Vertical white bands
Step Section Check ite
m
1 Image check
A
black line in sub sc
a
is sharp.
B. Troubleshooting procedure
2
A
white line in sub sc
a
is sharp.
3 Imaging unit The surface of the OP
C
scratched.
4 Dirty on the outside.
5 Contact terminals mak
e
connection between e
a
imaging unit and mach
6 Developing bias conta
c
makes good connectio
n
7 LSU The surface of the LS
U
dirty.
8 The problem has been
through the checks of
s
7.
Service Manual
CLX-9250/9350 series
7-1
s
hooting
(in feeding direction)
Vertical color bands
m
Result Action
a
n direction Yes Clean the charge
scorotron.
a
n direction Yes Clean the LSU window
C
drum is Yes Change imaging unit.
Yes Clean.
e
good
a
ch
ine.
No Clean contact terminals.
c
t terminal
n
.
No Clean contact terminal
and check terminal
position.
U
window is Yes Clean with cleaning jig.
eliminated
s
teps up to
No Change LSU.
To be continued on next page…
SAMSUNG ELECTRONICS
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