3 , fusing jam : When the fuser roller separation claws extended use , the tip blunt or small spring after fatigue failure will cause paper jams. For some models, the paper feed roller mouth severe wear after prolonged use , will frequently jams. As the fuser roller jam caused severe fouling , models are common in the general case .

 

4, due to a paper jam paper path sensor failure or malfunction caused by other circuits , are another type of problem, repair manual control , with the instrument , do the appropriate checks.