Dell 5110cn Color Laser Printer - Manual (Page 281)

CAUTION: Make sure nothing touches or scratches the surface of the light-sensitive drum
surface (green-colored roller) or the transfer roller (black-colored roller). Scratches, dirt,
or oil from your hands on the imaging drum or transfer roller may reduce the print quality.
Holding the imaging drum by the handle with the flat part facing the back of the printer, align the
plastic guides on both sides of the imaging drum with the slots in front of the arrows on the printer. 2.
Pull the protective cover on the imaging drum straight up to remove it. 3.
NOTICE: Do not touch the transfer roller (black-colored roller). Make sure that nothing touches or
scratches the roller surface. Scratches or oil from your hands on the roller deteriorates print quality.
4.