Samsung SCX-4216F Series Service Manual page 43

4-3 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 Develop Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
Samsung Electronics
Fuser
PR
1
OPC Drum
2
Charge Roller
3
Supply Roller
4
Developing Roller
Abnormal image period
L S U
Toner Cartridge
CR
DR
OPC
SR
PTL
TR
5
Transfer Roller
6
Heat Roller
7
Pressure Roller
75.5mm
37.7mm
37.0mm
35.2mm
45.3mm
64.1mm
75.5mm
MP Sensor
FR
Kind of abnormal image
White spot, Block spot
Black spot
Horizontal density band
Horizontal density band
Black side contamination/transfer fault
Black spot and fuser ghost
Black side contamination
Troubleshooting
4-9