We have a machine that came back in on a trade that's a 3035 and it weill give a 0440 code which is finisher communication error but there is no finisher.

You can attatch one and runit with no problem. Had it unplugged and it sat all night. Plug it in and turn it on this morning and bada bing bada boom theres your 440 code.

Got's ideas? I already flashed and it don't gots hard drive.