All error codes By model: T1100T1500T1700T2300T2500T610T730T830T930Z5200Z6Z6200Z9 Model T610 Error Code 74:YZ Problem Description Failed getting Part Numve/Serial Number Corrective Action Options Turn off/on, check that the Printer has the latest Firmware, Use the Service munu to update the S/N or Part Number Schedule Service Call ⭢ (301) 340-0000 Email ⭢ Contact Us