Hi,
You will need a tech because it can be a software problem, an issue with one memory or with the ESS PWB (motherboard of the machine).
Gabi
I am facing error 116-321 in my xerox 4110 copier/printer and the functional lights blink when ever i turn on the machine and the loading screen gets frozen on the 25 percent of loading. Ever simce i bought the machine. Please help me or send solution for my problem. Please Informe me on my email id somparkash225@gmail.com. I would be very greatfull if you help me out.