Alignment & Troubleshooting
Service Manual
4-13
Samsung Electronics
4.1.3 Abnormal Image Printing and Defective Roller
If abnormal image prints periodically, check the parts shown below.
No
Roller
Abnormal image period
Kind of abnormal image
1
OPC Drum
75.5mm
White spot, Block spot
2
Charge Roller
37.7mm
Black spot
3
Supply Roller
44.9mm
Horizontal density band
4
Develop Roller
35.2mm
Horizontal density band
5
Transfer Roller
47.1mm
Black side contamination/transfer fault
6
Heat Roller
77.8mm
Black spot and fuser ghost
7
Pressure Roller1
62.8mm
Black side contamination
8
Pressure Roller2
50.2mm
Black side contamination
1
2
3
4
OPC Drum
Charge Roller
Supply Rolle
r
Developing Roller
5
6
7
Transfer Roller
Heat Roller
Pressure Roller1
8
Pressure Roller2
1
2
3
4
5
6
7 8