How do I check for foreign objects or obstructions inside my Brother printer that might be causing an error?

Power off and unplug the printer. Carefully inspect all accessible areas inside the printer, including the paper path, toner/ink cartridge compartment, and output tray. Use a flashlight to help you see into hidden areas. Look for any small pieces of paper, staples, paper clips, or other foreign objects that may be obstructing the printer's mechanism. Use tweezers or a small tool to carefully remove any obstructions. Be gentle to avoid damaging any internal components.