jamming in the delivery tray on finsher

**imagertech** · 03-14-2019

customer has a bizhub 421 and we took the inerfinsher off and installed a new FN4 a big one. So I had to install a what I will call a delivery unit AU? well it will copy one fine all day, but ask for 5 by the third it jams.
I am seeing that that unit the paper goes slower than the machine so by the third page the next one gets on top of it and then jams. I followed installation instructions. Can I adjust the speed? do I need to change a soft switch?
I am not a Minolta tech but a canon and sharp tech of 30 years and I don't have a book. this was only going to be a one time but so far its not.

**Desert Rat** · 03-14-2019

Imagertech,
I've gotten into things like that also.
How does the paper spacing look with out the finisher?
If this is a used unit I would be inclined to check the drive system first.
Make sure you have good pressure on the rollers in the bridge unit.
I may be able to help with some information. Check your PM's.

DR

**imagertech** · 03-14-2019

Thanks for the reply. the bridge is new out of box. but as I am not a minollta tech I am not sure if there is more than one. The drive is from the delivery roller section of the machine and the red delivery rollers then send the paper to the bridge
and that's when the paper slows. almost like it is setup for a slower machine. this is a 421. I would think it is plug and play like on the sharps, no mater the speed because the drive is from the copier itself. But I am not sure. I see the paper slow as it goes from the fuser into the delivery. the jam starts after two pages.

**Desert Rat** · 03-20-2019

Would you like the manual?

Dr

**allan** · 03-20-2019

Is this a restoration for a museum?

**imagertech** · 03-20-2019

Originally Posted by Desert Rat

Would you like the manual?

Dr

Yes I would love the manual.

**imagertech** · 03-20-2019

Originally Posted by allan

Is this a restoration for a museum?

LOL no he knows its old but likes it. So he purchased a new in the box sorter and a transport unit. I am a sharp and some canon guy but I have installed a lot of finishers in my day. The orange delivery rollers are in bad shape, so I started there but the paper comes out of the machine fine. In face that's when the problems occur. they start to slow when the hit the transport and then by the third one they are on top of each other.