mpc 2050 jams at 24

[Phil B.]

I have this on an mpc5503.
simplex ok but the paper stops at the inverter rollers. the 024 code just means the paper hasn't reached the sensor, which it hasn't, because the inverter rollers havn't turned.
I've tried turning motors in output check. duplex and exit motors work fine but the inverter motor doesn't work at all.
I've changed the inverter motor for a new one. I've changed the inverter/exit unit for one out of an old machine. (customer has one in the basement they've forgot about).
I'm ready to change the IOB board next.

everyone else fixed their problem with the inverter sensor... maybe the one you swapped was bad?

[drew007]

I can see the sensor change state on input check. I think that I may have a different problem.
Still looking at iob board.

[Mark Bbb]

1. Did you clean the paper path and all rollers (very) well?
2. especially the rollers at the junction gate (above the F.Unit) get dirty quick, they must be really clean.
3. have you test the duplex function with a new - good brand and dry - paper?
4. I have never replaced 1 sensor on this model, so it would very surprise me that this is the issue. Of course, sensors needs to be cleaned too.
5. We install a tray heater, and no matter what some technicians says, it really helps!
6. Good luck

[drew007]

the rollers aren't turning. so the paper isn't hitting the sensor.
can't activate the rollers in output check.
can see sensor on input check.

[Mark Bbb]

I have replaced inverter sensor with no luck.
I notice that, without the covers, it's working better than with all covers attached.
I think replacing the whole exit/inverter unit will fix the problem.

[Mark Bbb]

It is fixed by swapping the entire duplex unit (right door unit, if you like).
So, something on the duplex unit is causing jams at code 24...
Have to figure out what exactly

[Mark Bbb]

It is fixed by swapping the entire duplex unit (right door unit, if you like).
So, something on the duplex unit is causing jams at code 24...
Have to figure out what exactly

On the duplex unit, on D1054985, the rear setting pin was missing...