If you used to use Wi-Fi (wireless LAN) but no longer need to do so due to a change in connection mode and so on, you can disable your Wi-Fi connection.
By removing unnecessary Wi-Fi signals, you can also reduce the load on your standby power.
Select 
on the printer's home screen.
To select an item, use the 
buttons, and then press the OK button.
Select Wi-Fi (Recommended).
Select Change Settings.
Select Others.
Select Disable Wi-Fi.
Follow the on-screen instructions.