Check if the proper amount of grease is applied to the caliber or the shaft of each gear.
Check if there is any damage on the gear tooth surface.
Check if there is any foreign matter between the gears.
Development drive unit/Paper feeding drive unit
Check if the amount of developer material is proper.
Check if there is any abnormality in the row of gears on the rear side of the developer unit.
Check if the developer material is caked.
Causes: Developer unit Feeding/developing drive unit Paper feeding/developer unit drive motor Drum TBU drive unit LGC board 1st/2nd drawer feed roller Bypass unit Paper feeding drive section Transport roller.
Description: Developer drive motor abnormality: Thedeveloper drive motor is not rotating normally.