this c 500 was jamming or stopping right befor it hit the fuser. Now i am getting an sc 33-2 and a j31-2 after warm up. The sc 33-2 code goes away when turned on and off sometimes but if it goes away then i get the j31-2 code. The machine does this with two differant fuser unts, same codes. I have run checks on m30, ps17,ps16,m701, m29, all seem to be working fine. Need this thing up for monday. Any ideas out there? Thanks.