All error codes By model: T1100T1500T1700T2300T2500T610T730T830T930Z5200Z6Z6200Z9 Model T1100 Error Code 01.1:YZ Problem Description NVM backup: not found, read, write or read back error. Corrective Action Options Turn off/on. If the System Error continue replace the main PCA, Replace Formatter Schedule Service Call ⭢ (301) 340-0000 Email ⭢ Contact Us