[CQ] MP4054 with bad skewing

[sturmtrooper]

I've got a 4054 that is about 1.5yrs old with just under 180,000 copies on it that is skewing test patterns badly. Even with the paper buckle set to -4 which is as far as it goes it's still pretty bad. On 8.5x11 LEF one corner of the trimming pattern will be nearly at the corner of the page while the other end is probably a quarter inch away.

Running paper buckle adjust to +4 just makes it worse.

The machine is level front to back and side to side and I've replaced all three feed tires in each of the three paper trays. There doesn't seem to be much variation in skew between the three trays, including the third one which is a LCT.

Any suggestions where to start?

[Zeldaman]

[sturmtrooper]

Re: MP4054 with bad skewing

I wasn't able to find anything like that on the US site either.

[copier tech]

Re: MP4054 with bad skewing

First work out if its the image skewing or the paper.

Does it skew on all paper trays inc bypass?

[sturmtrooper]

Re: MP4054 with bad skewing

First work out if its the image skewing or the paper.

Does it skew on all paper trays inc bypass?

I haven't checked the bypass, but as I mentioned it does skew from the three main trays of the machine the third is an LCT. The skew seems pretty consistent between the trays I did use.

[Polarbear]

Re: MP4054 with bad skewing

I've got a 4054 that is about 1.5yrs old with just under 180,000 copies on it that is skewing test patterns badly. Even with the paper buckle set to -4 which is as far as it goes it's still pretty bad. On 8.5x11 LEF one corner of the trimming pattern will be nearly at the corner of the page while the other end is probably a quarter inch away.

Running paper buckle adjust to +4 just makes it worse.

The machine is level front to back and side to side and I've replaced all three feed tires in each of the three paper trays. There doesn't seem to be much variation in skew between the three trays, including the third one which is a LCT.

Any suggestions where to start?

Have you stopped the machine with the paper at registration to see if it is fed straight from there?

Is there any damage to the paper that is fed out? Folds? Nicks/cuts?

[sturmtrooper]

Re: MP4054 with bad skewing

Have you stopped the machine with the paper at registration to see if it is fed straight from there?

Is there any damage to the paper that is fed out? Folds? Nicks/cuts?

I havn't stopped it at registration, I'll have to give that a shot next time I go there. The paper feeds out without any damage. I don't think it's hooking on anything.

Given that it is inside a prison and prison guards have been some of the most abusive of our machines I'm leaning towards maybe something inside the machine being slightly twisted or bent out of shape.

[slimslob]

Re: MP4054 with bad skewing

Have you checked if the registration roller is making contact at both ends.

[sturmtrooper]

Re: MP4054 with bad skewing

Have you checked if the registration roller is making contact at both ends.

I have not, I'll put that only my list of things to try.

[Oze]

Re: MP4054 with bad skewing

I havn't stopped it at registration, I'll have to give that a shot next time I go there. The paper feeds out without any damage. I don't think it's hooking on anything.

Given that it is inside a prison and prison guards have been some of the most abusive of our machines I'm leaning towards maybe something inside the machine being slightly twisted or bent out of shape.

I'll see your prison guards and raise you nurses..!!!
I've found that nurses are the most abusive...in particular Orthopedic nurses.
Not sure if it's all the muscles they've built up resetting dislocations but they're pretty much copier thugs lol.

[sturmtrooper]

Re: MP4054 with bad skewing

I'll see your prison guards and raise you nurses..!!!
I've found that nurses are the most abusive...in particular Orthopedic nurses.
Not sure if it's all the muscles they've built up resetting dislocations but they're pretty much copier thugs lol.

For us prison guards are the worst. Next are other state employees. Oddly enough the federal ones tend not to break things. Then comes teachers.



So, yesterday I went back to the machine and here's what I found. The swivel guide plate that sits outside the first paper feed station was popped out of place. So I put that back. The swivel guide plate for tray three was way out of play and had had it's retainer clip broken off. Found the clip and glued it back on then replaced the guide plate. The grip material feed tire for the third paper feed station had partially slid off the core and was sitting at an angle. I had replaced it a week ago when I was there and it looked fine then but I believe the traction material expands and contracts at a different rate than the core does so temperature changes have caused them to slip off the core before while still in the box in my car stock. So I replaced it with a different roller just to be done with it.

Tray 1 and 2 now have quite good registration with almost no skew, so I'm happy with that. Tray three still has some but it's enough that I doubt the guards will notice and complain.

I did notice that it seemed like one of the rubber rollers on the driven part of the registration roller that sits on the paper transfer unit seemed to have slid over some and was a bit swollen in one spot. So I will probably replace that sometime in the future.

[Phil B.]

Re: MP4054 with bad skewing

I'll see your prison guards and raise you nurses..!!!
I've found that nurses are the most abusive...in particular Orthopedic nurses.
Not sure if it's all the muscles they've built up resetting dislocations but they're pretty much copier thugs lol.

I'll see your nurses and raise you teachers!

[Coptech]

Re: MP4054 with bad skewing

I hate the prisons also. Here, the guards are too lazy to escort you to the machines. They point and you wander through general population trying to hide screwdrivers. I guess you are supposed to feel safer knowing they are supposed to be watching you on cameras. They want you to take waste toner offsite. They are afraid it will be used as tattoo ink. Who cares? At the entrance, they have a metal container where guards are supposed to discharge their handguns before entering the facility. I always threatened to just dump the waste toner in that receptacle and hope I am not around when they fire the next round into it.