Samsung CLP-300 Series Service Manual page 129

Alignment and Adjustmens
6.5 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
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Developing Roller
5 1 st Transfer Roller
6 2 nd Transfer Roller
7 Heat Roller
8 Pressure Roller
Service Manual
6-10
Period
188.5 mm
37.7mm Black Spot and line and Periodic Band
47.5mm Periodic Band by little difference of density
26.0mm White Spot, Horizontal black band
32.7mm Ghost, Damaged Image by abnormal tranfer
57.5mm Ghost, Damaged Image by abnormal tranfer
86.6mm Black Spots or Vertical Black Band
86.6mm
Phenomenon
White and Black Spots
Background
Samsung Electronics