Brother HL-2270DW printer repeatedly beeping when turned on?

Brother HL-2270DW printer repeatedly beeping when turned on?

Just purchased the 2270DW laserjet printer. When I turn it on it beeps twice, stops. Beeps twice again in a few seconds. Stops and in a few seconds beeps again. No job is in the queue. The toner is fine and no lights are lit. I'm hooked up by USB to my MAC. There's nothing online that I can find that makes any sense and nothing in the manual. This is driving me crazy! Thanks-