Never touch the high-voltage contact points inside the top cover; this
could damage the printer.
High-voltage contact points
Open the top cover by grasping it at both sides and lifting it up completely.
Grasp the cartridge by the grip, lift it slightly upwards, then pull the cartridge out and
remove it from the printer.
Rock the cartridge gently to distribute the toner evenly inside the cartridge. Repeat this
5 or 6 times.
Correcting Poor Print Quality