bizhub 420, duplex problem

[Gab]

It makes single sided copies with no problem.
When doing 2-sided , it prints the first side and when it pulls in duplex unit paper it stops and paper jam. It doesn't try to pull in paper again.

[Phil B.]

Re: bizhub 420, duplex problem

It makes single sided copies with no problem.
When doing 2-sided , it prints the first side and when it pulls in duplex unit paper it stops and paper jam. It doesn't try to pull in paper again.

jam code?

what gsm paper are they using?

are the duplex rollers clean?

any visible obstructions?

as always need more info from you.

[Synthohol]

Re: bizhub 420, duplex problem

10+ red cards Phil, why even bother responding?

[Phil B.]

Re: bizhub 420, duplex problem

10+ red cards Phil, why even bother responding?

trying to be a kinder more helpful Phil B. brother

[allan]

Re: bizhub 420, duplex problem

Recall there was a very common problem with switchback sensor actuator un-clipping or breaking.

[Toxic]

Re: bizhub 420, duplex problem

Whenever i have this problem on 420/500 it was always grease inside duplex clutches.
KM long time ago release TAD about this problem.
Cleaning clutches solve problem for some time but replacing clutches and removing excesive grease from duplex gears is permanently solution.