What should I check first if my DCP-B7500D appears to have a problem?

First, verify that the machine's power cord is connected correctly and the power is on, and that all orange protective parts have been removed. Also check that paper is inserted correctly in the paper tray, interface cables are securely connected, and the network access point or router is turned on (for network models). You can also check the machine's status using Brother Status Monitor on your computer. (Page 12)