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

First, verify that no network (Ethernet) cable is connected to the printer, as this prevents wireless connectivity. Also confirm the printer is within 30 meters (100 feet) of the wireless router, that both devices are powered on, that the wireless switch is on, and that the printer and computer are on the same wireless network. Mac users should also verify the router supports Bonjour. (Page 3)