I have a Xerox Phaser 8400 which has a paper jamming issue.
Going into the diags menu and testing the paper path status,
it says: test fault: TF_vel:7. I don't find what this means. Can somebody help?
Also, I can't clear the fault history in the NVRAM, and it looks that nothing can be
written in it. Am I doing something wrong? There is no error message, but the
old error codes are still displayed after reset.