Bizhub 751 jam won't clear

[inkstrum]

After 15-50 pages print, a paper goes through the vertical transport and gathers in a bunch just prior to entering registration assembly. Area 9 in display picture. When paper is removed, easily since it's exited the vertical transport, it doesn't clear the code. I can get it to clear and print again by running a paper back and forth through top of transport by hand and sometimes by slamming the transport door. I swapped out registration assemblies with another machine and same thing happened. Any ideas?

[allan]

Jam code please.

[copyman]

Just from what you describe sounds like a loose connector, sensor, etc.

Jam code may help.

By the way I have a whole working Biz 601 if you need anything.

[Phil B.]

After 15-50 pages print, a paper goes through the vertical transport and gathers in a bunch just prior to entering registration assembly. Area 9 in display picture. When paper is removed, easily since it's exited the vertical transport, it doesn't clear the code. I can get it to clear and print again by running a paper back and forth through top of transport by hand and sometimes by slamming the transport door. I swapped out registration assemblies with another machine and same thing happened. Any ideas?

double check all sensors and harnesses... jam code?