Brother MFC7550MC fix error codes list – Compatible Printer model: Brother MFC7550MC – Brother MFC7550MC Error Codes with instructions guide: Code: 71 Description: Laser scanner motor does not lock. Code: 72 Description: Cannot detect Beam Detect signal. Code: 73 Description: No toner cartridge loaded. Code: 74 Description: Toner empty. Code: 75 Description: In-house temperature error. […]