Dell 3115cn Color Laser Printer - Manual (Page 107)

NOTICE: Ensure nothing touches or scratches the surface (black-colored film) of the transfer belt
unit. Scratches, dirt, or oil from your hands on the film of the transfer belt unit may reduce print
quality.
Ensure that the multifunction printer is turned off. 1.
Remove all packaging from duplex module. 2.
Push the button (right side) and open the front cover. 3.
Pull up on the belt release levers and rotate the transfer belt unit up as shown in the illustration. 4.
5.