Samsung SCX-6320F/XEC Service Manual page 104

Abnormal Image Printing and Defective Roller
If abnormal image prints periodically, check the parts shown below.
NO Roller
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Develope Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
Samsung Electronics
Abnormal image period
94.3 mm
38.3 mm
43.8 mm
54.3 mm
56.6 mm
83.6 mm
91.0 mm
Kind of abnormal image
White spot. Black spot
White spot. Black spot
Horizontal dark band
Horizontal dark band
Black side contamination/transfer fault
Black spot, White spot
Black side contamination
Service Manual
Troubleshooting
7-7