What should I check first if my DCP-B7520DW seems to have a problem?

First, verify that the machine's power cord is connected correctly and the power is on, all orange protective parts have been removed, paper is inserted correctly in the paper tray, and interface cables are securely connected. You should also check that the wireless access point, router, or hub is turned on and its link indicator is blinking, and check the machine's status in Brother Status Monitor on your computer. (Page 12)