[Jamming] TA 5053 J4012

[Dark Helmet]

Howdy folks,

Got a TA 5053 that jams out of tray 2 frequently with J4012 feeding 11x17 or legal.

So far we have swapped the vertical feed drive pack, the reg clutch and the unit with the paper dust cleaner to replace that clutch. 3-5 pages and it jams. We put 11x17 in the MP tray and it feeds fine.

Paper is 2-3" out of the paper exit into the catch tray and the machine just stops. When we put legal in we had a fold below the fuser into that cavity above the reg roller and below the transfer belt. Wasn't folded over hard, just a big bend into it.

Im wondering if the fuser is having a issue and not feeding the paper thru fast enough. What bugs me about that idea is it feeds legal fine from Tray 1, Trays 3/4 are tandem trays with letter and feed fine as well but im running out of things to replace ?.

Thx

[Ropariva]

[Dark Helmet]

It was set on manual size. We tried Auto with same result.

[Ropariva]

Is the paper dead centre in the tray? Any damage to the lead edge or sides of the paper? Try printing a grid pattern to see if there is any deviation of the printed image on the jammed paper. When it does jam is it at the exact same point in the feed?

[KYO_OEM]

it may also be due to the feed clutch/ feed rollers.
the systems open 2 time frames for each page
1 for the leading edge and 1 for the trailing edge
if the paper needs too much time to leave the drawer, it exceeds the 2nd time window and an xx12 instead of xx02 appears as an error.
we have already had rusted clutches on systems out of the box

[Dark Helmet]

Ill try printing a margin page so i have a grid to check against. The drive pack was a used pack the former techs here had sitting on the shelf from a stripped machine. Hopefully fuser fixes this today!

[Dark Helmet]

Fuser didn't fix it. Ran 20 pages fine, put the old fuser in to confirm and it jammed, put the new fuser back in and it jammed. Lead edge is perfect. I did get a buckle below the transfer belt in the paper. Either the fuser is slowing down or the paper feed / reg is going to fast which i really doubt.

[Lunatech]

I don't know if it will help but. I had an issue, caused by me, where the fuser drive unit was installed incorrectly. In particular the shaft for the long gear for delivery drive wasn't seated in the pilot hole. As such it wouldn't engage properly to the exit unit and in turn would not always drive the exit rollers in the fuser. Same kind of situation as what you are seeing, with the exception of I could only feed 11X17 reliably. all other sizes from all sources may get a few pages then j401X.

For what it's worth I hope this helps.

[Dark Helmet]

I don't know if it will help but. I had an issue, caused by me, where the fuser drive unit was installed incorrectly. In particular the shaft for the long gear for delivery drive wasn't seated in the pilot hole. As such it wouldn't engage properly to the exit unit and in turn would not always drive the exit rollers in the fuser. Same kind of situation as what you are seeing, with the exception of I could only feed 11X17 reliably. all other sizes from all sources may get a few pages then j401X.

For what it's worth I hope this helps.

Tried the drive yesterday. Same issue. Think im going to try a exit unit and then put new clutches in the entire paper path on the machine.

[KYO_OEM]

only 1 question.
If it works well with feeding from mpt and no jam from drawer 1, why the fuser can be the problem?
If we have faulty fuser drive or faulty fk unit, we also get problem with other drawer and mpt.
In case of feeding delay from drawers, the leading edge will be perfect.
Exit unit can`t be the problem, because you do not get jamming from other drawers or mpt...
From my experience it`s related to feed from drawer 2.
Try new feed drive unit with clutches.
Did you try to use pick up/ feed unit from drawer 1?
Did you check the movement from retard roller?
Sometimes it stucks and as a result you get feed delay.

[Dark Helmet]

only 1 question.
If it works well with feeding from mpt and no jam from drawer 1, why the fuser can be the problem?
If we have faulty fuser drive or faulty fk unit, we also get problem with other drawer and mpt.
In case of feeding delay from drawers, the leading edge will be perfect.
Exit unit can`t be the problem, because you do not get jamming from other drawers or mpt...
From my experience it`s related to feed from drawer 2.
Try new feed drive unit with clutches.
Did you try to use pick up/ feed unit from drawer 1?
Did you check the movement from retard roller?
Sometimes it stucks and as a result you get feed delay.

Ive been running through the same thoughts as well but the one thing that sticks out is the paper is getting piled up below the fuser. Either the fuser is not taking it away fast enough or the paper is coming up to fast but i totally, agree, why does it work fine in trays 1, 3/4.

We have swapped tray 1 and 2 feed units and pretty much everything that touches the paper from tray to past the fuser.
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[nathicana]

There could be a problem on the right door assembly. Maybe letter makes it through but not legal.

I know it sounds like overkill but replace the right door, maybe you have a used one you can try.

[kyotechnz]

Going by your original fault description, logic would dictate that the tray 2 paper feed unit is causing the problem.
Have you swapped the paper feed unit with a known good one?
Have you replaced the tray 2 feed rollers?
Check the mylar at the seperation roller is not damaged. Also have had faulty seperation rollers cause issues.
Also check the seperation roller mechanism. Lube the pivot points. Also check the part the roller fits on, if there is a lip on the part the white arm (not the one the spring attaches to) runs on, remove the lip (with a file or sandpaper). This I have found fixes a lot of the feed problems.
Blow out any paper dust.

Also swear at the people who designed this crappy unit.

[Dark Helmet]

There could be a problem on the right door assembly. Maybe letter makes it through but not legal.

I know it sounds like overkill but replace the right door, maybe you have a used one you can try.

Changed that too ?

Tray 1 and 2 feed units have been swapped around. Tray rollers replaced. Definitely been swearing at the little turkey who designed it.

Going back with the little sensor right at tray 2. If that doesn't fix it im going to do the Feed Image board as ive already done the feed drive pack.

We went into sensor test yesterday and you can run paper and watch the sensors turn on. You can only feed single sheets so we could never replicate a jam but once we saw the Cassette 2 sensor turn on, flip off and back on.

[Dark Helmet]

Think its fixed. This sensor worked fine in service mode. When watching the sensors work in U31 running paper we spotted Cassette 2 sensor flicker on and off while feeding paper. We changed this sensor and found the damaged wire. ????

Thank you for all your suggestions!

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