MP9002 Jamming on tray 1

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

Forget about the damned jam letter. That is merely to tell the operator where to look for the jam. What is the actual jam code, displayed in the form Jxxx where xxx is a 3 digit number. It tells us whether the jam is detected by the relay sensor or the registration sensor and whether it is a late jam of a lag jam. An actual paper tray jam would be an operator letter of A, not B.

it looks like it folds as soon as it leaves the tray but gets stuck in the b guide area

[skinnyb]

Re: MP9002 Jamming on tray 1

I would check the tray itself. I have seen when the paper is stacked crooked or a stack of sheets folded under on one corner it causes this. If the sheet table is crooked or an issue with the cables not lifting uniformly it will do this... I usually run the table cable lift up and down by hand and measure with a tape and see that it is square and level. Those cables sometimes have a mind of their own.

Sent from my LM-V405 using Tapatalk

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

I would check the tray itself. I have seen when the paper is stacked crooked or a stack of sheets folded under on one corner it causes this. If the sheet table is crooked or an issue with the cables not lifting uniformly it will do this... I usually run the table cable lift up and down by hand and measure with a tape and see that it is square and level. Those cables sometimes have a mind of their own.

Sent from my LM-V405 using Tapatalk

thank you, I've tried replacing the entire tray including the A guide plate, I wonder if the actual rail for the tray could be the issue

[Notrons]

Re: MP9002 Jamming on tray 1

It's only tray 1, tray 2 and 3 work with no issues at all

You can swap one of the working paper feed units from either tray 2 or 3, they are all the same. If the problem follows, you can narrow the problem to the paper feed unit. I did get a good look at the one I was working on, it kind of looked like one of the tension springs needed replacement. Unfortunately, was unable to find part, so just replaced entire feed unit.

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

You can swap one of the working paper feed units from either tray 2 or 3, they are all the same. If the problem follows, you can narrow the problem to the paper feed unit. I did get a good look at the one I was working on, it kind of looked like one of the tension springs needed replacement. Unfortunately, was unable to find part, so just replaced entire feed unit.

thank you, I haven't swopped from to or 3 but I did try 2 other feed stations from other machines. Will definitely try sopping tray 2 with 1

[slimslob]

Re: MP9002 Jamming on tray 1

It's only tray 1, tray 2 and 3 work with no issues at all

What width paper is being fed from trays 2 and 3?

[slimslob]

Re: MP9002 Jamming on tray 1

it shows relay sensor: late and jam J012

it looks like it folds as soon as it leaves the tray but gets stuck in the b guide area

I wonder if there might actually be 2 problems. One causing the fold. The other causing the jam. Otherwise the fold and delay are happening in the paper path somewhere between transport sensor 1 and the relay sensor.

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

What width paper is being fed from trays 2 and 3?

All being fed same as tray 1. A4 long edge feed

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

I wonder if there might actually be 2 problems. One causing the fold. The other causing the jam. Otherwise the fold and delay are happening in the paper path somewhere between transport sensor 1 and the relay sensor.

but how? I've changed the whole reg unit as well as the A guide and the feed station and the other trays go through the same paper path. Where else could the issue be? Perhaps a board?

[slimslob]

Re: MP9002 Jamming on tray 1

but how? I've changed the whole reg unit as well as the A guide and the feed station and the other trays go through the same paper path. Where else could the issue be? Perhaps a board?

My guess would be a burr on the plastic flip down turn guide coming out of the tray 1 feed station. It is close enough to the 1st transport sensor to not have delayed the paper enough to cause a J008 as the fold could be in the middle of happening. Far enough from the relay sensor to have delayed it enough to be detected as a jam J012. If that is the case, if you swap feed stations 1 and 2 the fold will still be there and the jam might change to J008.

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

My guess would be a burr on the plastic flip down turn guide coming out of the tray 1 feed station. It is close enough to the 1st transport sensor to not have delayed the paper enough to cause a J008 as the fold could be in the middle of happening. Far enough from the relay sensor to have delayed it enough to be detected as a jam J012. If that is the case, if you swap feed stations 1 and 2 the fold will still be there and the jam might change to J008.

Thanks for the info I will definitely go back and see what's going on around that area

[Keegan Chetty]

Re: MP9002 Jamming on tray 1

UPDATE: I have swopped tray 1 and 2 feed stations around and ran 15k copies and no jams. I don't know how that's possible.Thanks to everyone for the assistance.