MX-FN11 stapling problem

[Guest]

I have a MX-4140 with a MX-FN11 finisher. The finisher will staple in the front position and the 2 staple position. When I go to staple in the back position it is in the right position to staple but it never rotates to staple the paper. The paper is there and then it gets shot out without a staple. I updated firmware and that didn't help. Has anyone seen a problem like this? When I run simulation 3-3 it operates normally. Just can't figure out why it will not staple in the back postion. any help would be greatly appreciated. Thanks Ron

[Hansen88]

Re: MX-FN11 stapling problem

I have seen problems kind of like that on a couple sharp finishers. On my calls both times a mylar on the rear side was pulled back and not allowing paper to fully go in stapler even though by watching it appeared to be going in correctly.