False finisher jams

[copymutt]

We have a "gulp" Savin 8045e that keeps throwing up sensor #29 jam codes with its SR790 finisher. Tried Savin Help line but no fix. Additionally, every time it jams it displays the jam log as "other paper size" when it is set to letter L.E.F. We tried setting the tray size with software, no help. We tried other trays set to L.E.F. , same symptom. Found no firmware mention of a fix either.

Anyone want to take a stab at this.
Jim

[lvsb]

Jim,

Is the machine jamming only in staple mode?

[copymutt]

Absolutley!

[Ricoh-ono]

The stack feed out belt is not stopping on the home position sensor. Try to reform the hook, tighten the belt, and check the sensor actuator arm.

[lvsb]

Ricoh-ono you stold my thunder!
100% agree with your answer.

[Lagonda]

Mystery Finisher Jams

A nasty Ricoh trick to remember is that on some models there is limited communication capacity between the finisher and the copier. The finisher can come to a stop with an SC code, i.e stapler hammer cant find home position, but doesn't tell the copier why. The copier knows somethings wrong and just takes a guess that theres a paper jam even though theres not a sheet to be found in the finisher.
On some models there is a supplementary RTB to tell you to look for a particular problem if you get PJs with out paper, with other models they just leave yo to it!!!

[copymutt]

Thanks, We've already been thru the feed out stack belt and sensor issue's, reform, tighten the belt , replace the sensor. Will look for further RTB info. Replaced the whole finisher tuesday. It sometimes takes a week for the proplem to occurr, but ten its fairly consistent. If it disapears w/ the new finisher then the problem is in the old finisher. If not the " other size" paper jam history is key.
Thanks for the tips.
Jim

DAVEY CROCKET HAD THREE EARS! His right ear, his left ear & that wild front ear.

[rthonpm]

It's not quite related, but close to Lagonda's take. Take a look at the stapler unit. I've had custommers go to replace the staples and pull the unit too far out so the metal stopper (part number B4084114) with a screw in front of the stapler unit gets caught on the frame it rides along and it throws the whole timing off in the finisher. As the feed out belt comes along, somehow the hook on it will catch on the sensor it passes and cause a jam to show.
Just an idea, but I've seen this cause quite a few issues in these finishers...

[copymutt]

Thanks rthonpm, I should have been clearer. The false jams occurs even w/o stapling. When just sorting this finisher still utilizes the stack feed out unit. This client is not capable of changing staples (lawyer) so we do it for them. Appreciate the tip.
Jim

[TonerMunkeh]

The vertical transport rollers on these things are always a favourite for causing phantom jams.

While running the motors in SP output mode, get some steel wool and rub all the crap off them, then apply a little bit of WD40 to get them nice and tacky again.

Also, when you clear the jam out of the machine, where exactly is the paper in the finisher?

[cobiray]

If none of the mechanical suggestions work out for you, try updating the firmware. I've had a few (out of the box) that didn't properly communicate with the finishers and threw misfeeds.

[copymutt]

Well, it's been a full week now and no further false jams since we replaced the finisher. So looks like we'll clean & scub upt he rollers and put it in service in the shop & monitor performance.
Thanks to everyone.
\
Jim

[copymutt]

After having this finisher in the shop and being able to test at our liesure we resolved the false jams by tweaking (reforming) the metal plate attached to the stapler stacker feed out belt, its rivited and functions fine w/ a slight twist to it but gives false jams when perpendicular to the belt.

Jim