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7.3.2 Horizontal white band / dark ban
A. Typical faulty images
B. Troubleshooting procedure
Step
1
A white line or black in main scan directio
sharp.
2
The surface of the OPC drum is scratche
3
Dirty on the outside.
4
Contact terminals make good connection
each imaging unit and machine.
5
Developing bias contact terminal makes
connection.
8
8
Original is damaged or dirty.
Original is damaged or dirty
9
DADF pad is dirty.
10
Original glass is dirty.
11
The adjustment value for [Image Position
Edge] falls within the specified range.
12
Remove lens cover by undoing 2 screws
CCD lens surface against contamination
objects.
Service Manual
7. Troubles
Horizontal white band
Check item
shooting
nd
Horizontal color band
on is
Clean contact terminals.
ed.
Change imaging unit.
Clean.
n between
Clean contact terminals.
good
Clean contact terminal and check
terminal position.
Change original.
Change original
Clean or replace the pad.
Wipe the surface clean with a soft cloth.
n : Leading
Readjust.
. Check
Clean the contaminated part.
or foreign
Caution
Fragile parts!
7-1
26
Action
SAMSUNG ELECTRONICS
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