How do I troubleshoot a wireless network connection problem on the M277?

Verify that no network cable is connected, as the printer cannot connect to a wireless network when a network cable is plugged in. Ensure the printer is within 30 meters (100 feet) of the wireless access point, and that both the printer and router are powered on with the wireless switch turned on. You can also run a diagnostic by going to Setup > Self Diagnostics > Run Wireless Test on the printer control panel. (Page 11)