Canon LBP6780x Manual page 89

After wiping off the dirt, wipe the printer with a dry cloth.
4
When the printer is completely dry, connect the removed cable or cord.
<How to connect the cable or cord>
*
USB cable
*
LAN cable
Power cord
*
Whether the cable is connected or not varies depending on your environment.
Connect to the USB connector on the printer.
Connect to the LAN connector on the printer.
(1) Plug the power cord to the power socket on the printer.
(2) Plug the power plug in the AC power outlet.