Last paper jams bizhub 162

[minolta35]

Last paper jams (not jam, machine stops when the last paper's end is on exit switch) when making multicopies.
Same thing happens often making 1 copy.
I change registration sensor with by-pass sensor.It still goes on...
And same thing when making copies into by pass...
Customer choosed A4R copying casette and by-pass.
It is not happen every copy but 50%...

[mrwho]

If doesn't happen on every copy, the most probable cause is a stuck actuator that doesn't fall back to it's resting place in time. Check your actuator's for any binding actuator and, while you're at it, clean all your sensors.