I have a 264 that is jamming Intermitttently on duplexing. Throws a POSD_N jam code. But before it stops its a loud almost grinding noise. It jammed on me two times out of 50. I've replaced the delivery unit and lower right side door. Now I'm thinking duplex motor. Mfp only has 302k on it. Any help would be great. Thanks so much!
I've seen this a few times, and it's most likely the duplex motor failing. I figured it out by stopping the gear by hand while running the duplex motor through the sim. It looked like the belt was skipping, but then I saw that the motor itself wasn't turning. I've swapped out just the motor and it's been good again.