Abnormal Image Printing And Defective Roller - Samsung SCX-6545N Service Manual

4.1.3 Abnormal Image Printing and Defective Roller

If a mark or other printing defect occurs at regular intervals down the page it may be caused by a damaged
or contaminated roller. Measure the repetition interval and refer to the table below to identify the roller
concerned.
1
2
No Roller
1 OPC Drum
2 Charge Roller
3 Develop Roller
4 Transfer Roller
5 Heat Roller
6 Pressure Roller
Service Manual
CÓPIA NÃO CONTROLADA
Alignment & Troubleshooting
3
OPC Drum
4
Charge Roller
Abnormal image period
94.30mm
43.96mm
39.25mm
57.14mm
125.6mm
157mm
4-14
CÓPIA NÃO CONTROLADA
2
1
3
Pick_UP Pick_UP
Roller Roller
Developing Roller
Transfer Roller
Kind of abnormal image
White spot, Block spot
Horizontal density band
Black side contamination/transfer fault
Black spot and fuser ghost
Black side contamination
5
6
4
MP Feed MP Feed
Roller Roller
5
Heat Roller
6
Pressure Roller
Black spot
Samsung Electronics