Dell 5110cn Color Laser Printer - Manual (Page 59)

Replace the top cover by inserting its front side into the printer first. 3.
Installing the Imaging Drum
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.
Push the front latch up and fully open the front cover. 1.
Push the button as shown in the following illustration and open the top cover. 2.