My printer won't connect to the wireless network — what should I check?

First, verify that no network cable is connected to the printer, as a connected network cable will prevent wireless connectivity. Also confirm that the printer is within 30 meters (100 feet) of the wireless access point, that both the printer and router are powered on, and that the wireless switch is turned on. Additionally, ensure the printer and computer are connected to the same wireless network, and try restarting the wireless router. (Page 3)