Dell 3115cn Color Laser Printer - Manual (Page 514)

Removing the Optional Multi-Protocol Card
NOTE: If the optional wireless printer adapter is also installed, it must be removed first.
Ensure that the multifunction printer is turned off and unplug all cables including the power cord from
the rear of the multifunction printer. 1.
Turn the screw on the control board cover gently in counter-clockwise direction and open the cover. 2.
Remove the two screws from the multipurpose card on the back side of the control board. 3.