Periodic Defective Image - Samsung SCX 3205 Service Manual

4.1.7 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.
Roller
OPC Drum
Developing Roller
Charging Roller
Supply Roller
Transfer Roller
Pressure Roller
Fusing Roller
1 Pressure roller
2 Heat roller
3 Charge roller
4 OPC
Service Manual
Alignment and Troubleshooting
Period (mm)
62.9mm White and Black Spots
35.1mm White spot, Horizontal black band
26.7mm Black Spot and line and periodic band
47mm Periodic Band by little difference of density
39.2mm Ghost, Damaged image by abnormal transfer
75.4mm Background
77.5mm Black spot and image ghost
1
2
3
4
5
6
7
Phenomenon
5 Transfer roller
6 Deve roller
7 Supply roller
4-21
Defective part
Toner Cartridge
Transfer roller
Fuser
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