ricoh mpc4500 refuses to duplex....

[Guest]

machine jams anytime you try to run a duplex job. Print on first side only, page jammed on diverter on way into fuser for second pass. installed inverter assy. problem still present. any suggestions greatly appreciated in advance!

[ruben]

Re: ricoh mpc4500 refuses to duplex....

Have you performed an INPUT check?

[sandmanmac]

Re: ricoh mpc4500 refuses to duplex....

What jam code (s) is it logging?

[nmfaxman]

Re: ricoh mpc4500 refuses to duplex....

1 way bearings in duplex slipping.
Causes timing problems.
I just pull them off, clean them and rough up the shaft with a scotchbrite.

[victor25]

Re: ricoh mpc4500 refuses to duplex....

On the bottom of the fuser is a black metal guide. Remove the 2 screws, clean the metal guide, and when you put put it back on use the square holes instead of the round ones. This allows you to pull the guide back a little farther and make the opening bigger. The paper curls on the second side and catch's it.

[Tonerbomb]

Re: ricoh mpc4500 refuses to duplex....

What jam code (s) is it logging?

sandmanmac is right on ...what are the jam codes?????

[kannuki2]

Re: ricoh mpc4500 refuses to duplex....

Check the duplex guide plate for warping? This is known on this model when it has 500k and up

[Counsel]

Re: ricoh mpc4500 refuses to duplex....

i think i had one like this a while back if i remember right the page makes it about an inch or so into the right side door before jamming, i believe i pulled off the cover on the right side of the door and found the timing belts loose and one ways slipping, i usually take off the one ways and spin a q-tip with alcohol around inside them, clean the shafts, and then make sure the belt tension is good.

[AlcanMan]

Re: ricoh mpc4500 refuses to duplex....

machine jams anytime you try to run a duplex job. Print on first side only, page jammed on diverter on way into fuser for second pass. installed inverter assy. problem still present. any suggestions greatly appreciated in advance!

Machine is logging ( j064) error

[sandmanmac]

Re: ricoh mpc4500 refuses to duplex....

Machine is logging ( j064) error

JAM CODE 064	Junction gate sensor does not turn off - check for obstructions in paper path
JAM CODE 064	Junction gate sensor does not turn off - check gate motor with SP 5-804-133 & 134 (CW/CCW)
JAM CODE 064	Junction gate sensor does not turn off - check with SP 5-803-68, clean or replace sensor as needed

[nmfaxman]

Re: ricoh mpc4500 refuses to duplex....

I have seen cheap/ recycled paper cause this code.
Too much curl entering duplex and tagging on the guide plate.
$5.00 a case more is not going to break their budget.