To set up your Brother machine on a wireless network:

1.         Connect the power cord to your Brother machine and then connect it to an electrical socket. ...

2.         Press Menu button on the machine's control panel.

3.         Press the Up or Down arrow key to select Network and press OK.

4.         Press the Up or Down arrow key to select WLAN and press OK.

For more information: Brother printer support number | Brother printer customer service number