Dell 3115cn Color Laser Printer - Manual (Page 509)

Removing the Optional Duplexer
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.
NOTICE: To protect the drums of the print cartridges against bright light, close the front cover within
five minutes. If the front cover remains open for more than five minutes, print quality may
deteriorate.
Ensure that the multifunction printer is turned off and unplug the power cord from the rear of the
multifunction printer. 1.
Push the button (right side) and open the front cover. 2.