Samsung ML – 3470ND / 3471ND Repetitive Defects List

 

List of the Samsung ML – 3470ND / 3471ND Repetitive Defects

I just received a call today on a machine that was leaving marks down the page. Majority of the image quality problems I see are related to repetitive defects. Below you will find a list of the ML-3470 / 3471ND repetitive defects. In order to find out which roller is causing the problem measure from the first defect to the next similar mark down the paper. The measurements below are the diameters of the rollers. The circumference of the roller doesn’t necessarily match these measurements. Find the closes measurement to your defect and check that roller. Below you will find a picture of the rollers inside the machine that correspond with the list of defects. Also I’ve included a few links to the toner cartridge and fusing unit.


Samsung ML - 3470nd - 3471nd repetitive defects

[one_third]Roller[/one_third][one_third]Repetitive Defect[/one_third][one_third_last]Print Qaulity Issue[/one_third_last]

[one_third]1 OPC Drum[/one_third][one_third]75.5mm / 2.97 inches[/one_third][one_third_last]White spot, Block spot[/one_third_last]
[one_third]2 Charge Roller[/one_third][one_third]37.7mm / 1.48 inches[/one_third][one_third_last]Black spot[/one_third_last]
[one_third]3 Supply Roller[/one_third][one_third]44.9mm / 1.767 inches[/one_third][one_third_last]Horizontal density band[/one_third_last]
[one_third]4 Develop Roller[/one_third][one_third]35.2mm / 1.385 inches[/one_third][one_third_last]Horizontal density band[/one_third_last]
[one_third]5 Transfer Roller[/one_third][one_third]47.1mm / 1.85 inches[/one_third][one_third_last]Black side contamination / transfer fault[/one_third_last]
[one_third]6 Heat Roller[/one_third][one_third]77.8mm / 3.06 inches[/one_third][one_third_last]Black spot and fuser ghost[/one_third_last]
[one_third]7 Pressure Roller[/one_third][one_third]62.8 / 50.24mm 2.47 / 1.977 inches [/one_third][one_third_last]Black side contamination[/one_third_last]


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