4. Alignment and Troubleshooting
4-17
Samsung Electronics
Service Manual
SCX-483x/5x3x series
4.1.5 Periodic Defective Image
If an image defects appears at regular intervals on the printed-paper, it is due to a faulty or damaged roller.
Refer to the table below and check the condition of the appropriate roller.
No
Roller Description
Band Period
(mm)
Phenomenon
Defective part
1
1st Pressure roller
62.8 mm
Background
Fuser unit
2
2nd Pressure roller
37.7 mm
Background
3
Heat roller
77.8 mm
Black spot and fuser ghost
4
Charge roller
26.7 mm
Black spot
Toner cartridge
5
Developer roller
36.78 mm
Horizontal band
6
OPC drum
75.49 mm
White and Black spots
7
Supply roller
69.57 mm
Horizontal band
8
Transfer roller
47.1 mm
Ghost, Damaged image
1
3
8
2
7
4
6
5