6.5.3.(5) Cyclic Print Trouble (Refer to Figure 7.2 E )(5-1) Vertical cyclic print troubleConfirmation Items Confirmation Tasks Action at NG(5-1-1) PeriodImage drum Check whether the period is 75.4mm. Exchange the IDunit.Development roller Check whether the period is 34.05mm for Y, M-ID and31.62mm for K,C-ID.Exchange the IDunit.Toner supply roller Check whether the period is 46.21mm for Y, M-ID and42.91mm for K,C-ID.Exchange the IDunit.Charging roller Check whether the period is 31.42mm. Exchange the IDunit.Upper roller of fuser Check whether the period is 79.3mm. Exchange the fuserunit.Lower belt of fuser(C3530) Check whether the period is 75.4mm. Exchange the fuserunit.Lower roller offuser(C3520)Check whether the period is 75.4mm. Exchange the fuserunit.Transfer roller (Black) Check whether the period is 50.27mm. Exchange the beltunit.Transfer roller (Color) Check whether the period is 43.98mm. Exchange the beltunit.When trying to use anew belt and fuser,please utilize thefuse keep mode ofthe maintenanceutility. (See Note! onpage 199.) Whentrying to use a newID unit, please becareful not to breakthe fuse with jiginside the ID unit.(Please refer topage 176)Y108500-4 Service Manual 199
