Abnormal Image Printing And Defective Roller - Samsung SCX-6345N/XAA Service Manual

Alignment & Adjustments

4.3 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
OPC Drum
2
Charge Roller
No Roller
1 OPC Drum
2 Charge Roller
3 Develop Roller
4 Transfer Roller
5 Heat Roller
6 Pressure Roller
Service Manual
4-12
m m m a a a n n n u u u a a a l l l s s s 4 4 4 y y y o o o u u u z z z c c c o o o m m m
Pick_UP Pick_UP
Roller Roller
3
Developing Roller
4
Transfer Roller
Abnormal image period
94.30mm
43.96mm
39.25mm
57.14mm
125.6mm
157mm
m m m a a a n n n u u u a a a l l l s s s 4 4 4 y y y o o o u u u z z z c c c o o o m m m
5
6
2
1
4
3
MP Feed MP Feed
Roller Roller
5
Heat Roller
6
Pressure Roller
Kind of abnormal image
White spot, Block spot
Black spot
Horizontal density band
Black side contamination/transfer fault
Black spot and fuser ghost
Black side contamination
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