Abnormal Image Printing And Defective Roller - Muratec F-114 Service Manual

4.1.8 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.
Fuser
PR
1
2
3
4
No Roller
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Develop Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
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Alignment & Troubleshooting
L S U
CR
OPC Drum
Charge Roller
Supply Roller
Developing Roller
Abnormal image period
75.5mm
37.7mm
37.0mm
35.2mm
45.3mm
66.3mm
75.5mm
4-21
Toner Cartridge
DR
OPC SR
PTL
MP Sensor
TR FR
5
Transfer Roller
6
Heat Roller
7
Pressure Roller
Kind of abnormal image
White spot, Block spot
Horizontal density band
Horizontal density band
Black side contamination/transfer fault
Black spot and fuser ghost
Black side contamination
Black spot