You can automatically connect to an wireless router by using a PIN code. You can use this method to set up if an wireless router is capable of WPS (Wi-Fi Protected Setup). Use a computer to enter a PIN code into the wireless router.
Tap 
on the home screen.
Tap Router.
Tap Start Setup.
Tap Wi-Fi Setup.
If you have made Ethernet settings, check the message and then tap Yes.
Tap Others > PIN Code Setup(WPS)
Follow the on-screen instructions.
If you want to check the network connection status for the printer after setup is complete, see the related information link below for details.
See the documentation provided with your wireless router for details on entering a PIN code.