Hello PJ,
Sounds like you have tried everything already, so it would be a hardware escalation: 1-800-821-2797.
Every morning we come in to three error codes. Based on findings online I unplug the system and pull the fuser out for 2 minutes. Put it back in and plug it in and it works fine all day as people use it. Overnight, we are closed, only to find the same error in the morning. Do the above steps and it works again.
What can I do to truly fix it
Codes are 310.330.00 303.777.00 and 330.380.00
thanks