Samsung CLX-9250ND - Page 491

7. Trouble
s
A. Typical faulty images
7.3.2 Horizontal white band / dark ba
n
Horizontal white band
Step Section Check ite
m
1 Image check
A
white line or black in
direction is sharp.
2 Imaging unit The surface of the OP
C
thd
B. Troubleshooting procedure
scra
t
c
h
e
d
.
3 Dirty on the outside.
4 Contact terminals mak
e
connection between e
a
imaging unit and mach
5 Developing bias conta
c
kd ti
ma
k
es goo
d
connec
ti
o
n
8 Scanner Original is damaged or
9 DADF pad is dirty.
10 Scanner
Original glass is dirty.
11
The adjustment value
f
Position : Leading Edg
e
within the specified ran
12
Remove lens cover by
screws. Check CCD le
n
against contamination
o
ob
j
ects.
Service Manual
CLX-9250/9350 series
7-1
j
s
hooting
n
d
Horizontal color band
m
Result Action
main scan Yes Clean contact terminals.
C
drum is Yes Change imaging unit.
Yes Clean.
e
good
a
ch
ine.
No Clean contact terminals.
c
t terminal No Clean contact terminal
dh kt i l
n
.an
d
c
h
ec
k
t
erm
i
na
l
position.
dirty. Yes Change original.
Yes Clean or replace the pad.
Yes Wipe the surface clean
with a soft cloth.
f
or [Image
e
] falls
ge.
No Readjust.
undoing 2
n
s surface
o
r foreign
Yes Clean the contaminated
part.
Caution
Fragile parts!
SAMSUNG ELECTRONICS
51
Fragile
parts!