hello, here is a tip , but i think you need to make a service call for it :
Fault Codes: 077-103, 77-103 Chains: 10
Machine is indicating a Fuser Exit Jam, but the 077-103 RAP fails to resolve the problem.Cause:
The Horizontal Transport is not coming on and fails to carry the paper away from the Fuser area. If you open the horizontal Transport, cheat its interlock (see BSD 12.2, location G 5 for interlock location), and run the Machine you can verify the Horizontal Transport Operation.
Plug 8390 at the Finisher PWB was not properly seated. Reseating the Connector resolved the problem.