Samsung SCX-82x0 series, Руководство по обслуживанию

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