TroubleshootingService Manual 4-209 Samsung Electronics4.4.5 Abnormal Image Printing and Defective RollerIf a mark or other printing defect occurs at regular intervals down the page, it may be caused by a damagedor contaminated roller. Make sure the repetition interval by consulting the table below.If the roller is dirty, try to clean it. If the problem is still occurred after cleaning the roller, replace the partincluding the defective roller.NO Roller Period(mm) Phenomenon Replace part1 Pressure Roller 94.2 Offset, Spot, Line Burst Fuser Unit2 T2 Roller 88.0 White and Black Spot, Periodic Banding,Rear Side Paper Dirty Transfer Roller3 Registration Roller 59.7 Roll Mark -4 Pick-up Roller 72.3 Roll Mark -5 Drive Roller 77.8 Periodic Banding, Color Registration CartridgeTransfer Unit6 T1 Roller 44.0 White and Black Spot, Periodic Banding CartridgeTransfer Unit7 Exit Roller 47.1 Roll Mark, Vertical Scratch -8 OPC Drum 94.3 White and Black Spot, Periodic Banding,Ghost, Color Registration Imaging Unit9 Charger Roller 44.0 White and Black Spot, Periodic Banding Imaging Unit10 Magnetic Roller (YMC) 35.3 Periodic Banding Imaging Unit11 Fuser Belt 127.04 Waving, Offset, Spot, Line Burst Fuser Unit12 Cartridge Transfer Unit 785.4 White and Black Spot, Periodic Banding CartridgeTransfer Unit13 Magnetic Roller(BK) 28.27 Banding Imaging Unit14 Charger cleaning roll 50.05 Banding Imaging Unit
