MX4100n

[bonnie750]

Been to a mx-4100n with a mx-rbx3 and a mx-fn10 finisher. the original problem was jamming,mostly pod_1n. i checked all the usual culprits, all ok and ran 100 off without fault.

my problems started when i took the mx-rbx3 out to check the flapper and surrounding area. replaced the unit and the paper,a4 lef, dog-ears both corners on the lead edge.

the paper is ok till it gets through the fuser and turns horizontal,the corners turn over somewhere between there and the centre of the pass unit.

i have had that unit in and out a dozen times and checked reinstallation of the pass unit with the install manual.no go!!!

a colleague had this same problem but just reinstalling the pass unit solved it, not this time.

the mods have been carried out as per the bulletin to prevent pod1_n jams

over to those who know...hopefully.

Bill

[OMD-227]

A few things to look into, as I've had this problem as well a few times.

Firstly, on a few run-ups, we've had almost constant jams or folding corners due to a slightly damaged frame. The frame that I'm talking about is the front plate for the delivery unit. This holds the delivery unit on the wrong angle causing paper to fold over corners as it enters the RBX3 gate which cannot open/close fully. Attached picture....

Photo012811.jpg


You'll most likely find that the pages will be perfect without the finisher & locking plate installed. If it starts jamming & folding paper in delivery unit or entrance to RBX3 gate when its all fitted together, its usually been a frame problem down here. A bit of panel-beating does wonders.

Secondly, the RBX3 gate has been modified from June 2009 production. Attached picture....


rbx3 gate.JPG



Also check the shifter locking plate is correctly installed in the rear frame and locking the shifter at the front.

[bonnie750]

hello Wazza

the plate is secured at the rear with the tab and front by a screw. it passes paper no problem with pass unit and finisher removed. I'll be back there thursday with a big hammer to do some panel beating.

[Froota]

Hey,

Can u check the adu reverse gate? I had a similar problem when my paper passed the fusing, i also got a corner turned over.
There was a little piece broken off in the black holder in the right door where the adu reverse gate fits into.
The problem was that the reverse gate turned too much down, so the paper pushed too hard against the gate.

Like Wazza said, this can be also a problem in the movement of the entrance guide of the rbx3.
look for sure if the guide go's up and down without interruption. Sometimes it's stuck and the paper crashes between the flapper and the frame.

[OMD-227]

Actually, Froota is right. I remember a call where the page was folding over, due to the reverse gate not opening when the door was closed. It was staying down instead of raising up over the delivery unit.
On the C-jupiter2's, the reverse gate is actuated by a plastic plate on the delivery unit (front side). Mine was loose, so when the door closed, the plastic plate lifted up, allowing the reverse gate to pass under it and not lift up into place. You will find the only thing holding the plastic plate is a single screw.
Open the main door and give the plastic plate a jiggle. If its loose, that could very well be the problem as the reverse gate is staying down.

Attached picture part #43

delivery.JPG

[mojorolla]

I only say this because I have not seen it mentioned. Is the slide plate lined up with the fixing guide? It was after you took it out from what the post says. I have seen this give folded corners.

Oh and thanx Wazza, I didn't know about that retrofit!

[OMD-227]

Hey Bill,

Did you get this one sorted out yet??

Very curious what it was.

[bonnie750]

hello Wazza

wish i had an answer!
service manager attended with me friday.machine hadn't been used since i was there for original job.machine worked perfectly!!!!!!!!

went over every damn thing. checked all the points raised ,,,,all spot on.. to be sure we took off the righthand door again and eyeballed the exit into the paper pass unit then ran the machine with the paper pass unit front panel removed.....same result.

when the curling happens you can hear a rustling sound as the paper is passing through the machine.....you know before it exits that the corners are going to be curled.trouble is even with the pass unit front removed the passes too quickly to see whether it's curled or not. whatever is acting on the paper it is on front and rear lead corners,both are curled evenly, all identical just like it's supposed to be like that.
i've been back to sharp and they have no ideas.

no choice so i'll have to wait and see mate!

Bill

[OMD-227]

Well, if everything has been checked that is listed above, then it will be new to me on this series.

Any chance you can take a box of better paper and get the client to run that? Damp paper in your neck of the woods must be a common issue at the moment with the type of weather we see you have.

[bonnie750]

yeah damp paper is a bit of a problem up here in the frozen north.. we're not used to heat but we're not used to minus 12 and 12 inches of snow either!
paper is the only thing left. the customer stores the paper correctly but it is a school so it's going to be cheap as chips. if it comes back to haunt me i'll change the paper and see how it goes.

Bill