[Jamming] MPC2800 jams at locations 19 & 20.

[MOSSY BOY]

Hi Guys,

I have got a Friday afternoon machine that is starting to really frustrate me.

I am a site engineer looking after 50+ devices, (10 x MPC2800) and the last four Friday afternoons a call for a MPC 2800 jamming at locations 19 ( Fusing Exit: ON) & 20 ( Paper Exit: ON) keeps coming in.
The device has done approx 77k. And is doing less than 1k a week. And is only doing very small print runs of mainly full colour reports, memos, emails,
General quality output, not full coverage, Word, Excel. Power point
But the user is booking in a call even if the device jams once !!!. But to be fair it is always at 19 & 20.
When I test the device, I test run 4-500+, full coverage, text, text/images, full colour, simplex, duplex, but I cannot get the damn thing to jam.

1. On the first visit I was unable fault the device

2. On the second visit I was still unable to fault it again, but there was paper with the leading edge dog eared caught at the hot roller.
So I fitted a newley refurbished fusing unit (Fusing Kit, belt, rollers, bearing etc). Increased lead edge erase to 6mm.

3.Third visit, the jam was at 20. So I removed the Exit assy, check, clean, lub the drive, and observe the fusing drive motor operation by trying to
stall the motor. Increase lead edge to 7mm.

4. Again jams logged at 19 & 20. Again remove fuser, exit assy

The device is in a clean, warm enviroment, with good quaulity Xerox paper being used. All firmware is up to latest levels. Checked Tessa, Copytech, ansd spoke to some of my colleagues out in the field.

Each time I test the machine i am unable to recreate the problem.. As I am on site I check the device remotley via WIM, also when I am passing I check the jam count. .
And it is every bloody Friday afternoon this issue happens.You try the usual and say "look it is a printer and it will occasionaly jam"," put in a fresh packet of paper", " No need to call if the machine jams once"
But the main user is a diretor's PA and she is now lost confidence with the device, and is now right on my case to get the device changed etc.
I have checked the paper registration, path, exit guides etc. All image registration looks OK
I am thinking about the fusing motor maybe stalling??, toner concentration too high ??

Does anyone have any thoughts?

Thanks in advance.

[teebee1234]

Re: MPC2800 jams at locations 19 & 20.

Chances are the paper exit sensor is failing, I've had this problem enough times that I stock the sensor (AW010127). There is also a tech bulletin relating to this, though it shows the problem as being a jam in A,B and C which is essentially the same issue. I've had it both ways, either an intermittent jam like yours or total failure. Since you are pulling the exit assy out, you might as well change out the fusing exit sensors (AW010107 x2).

Also make sure that the engine firmware is 1.52:09 or later as it corrects a problem with the fuser exit motor operating at the wrong time.

[Herrmann]

Re: MPC2800 jams at locations 19 & 20.

And it is every bloody Friday afternoon this issue happens

This sounds odd. Maybe the mashine is ok and something in the environment happens? Had this one Time, a big beverage vending mashine standing a few rooms away was connected to the same circuit and sometimes, when the cooling compressor starts to work, the voltage dropped deep enough to trip a jam in the copier. As a first step I would try to connect the mashine to another circuit, if possible, and see if the problem remains.

[MikeyP]

Re: MPC2800 jams at locations 19 & 20.

Hi there,
Sorry to be simplistic,but as its a multiple site why not swop it out to another location and monitor there .
You'll then at least placate the end user

good Luck!

[slot]

Re: MPC2800 jams at locations 19 & 20.

try changing the guide on the inverter area part no D0294592 as it tends to bow over time this will cause dog ears on the corners
there is a gate in that area that has a cushon on the front end if you remove the rubber stop it allows the gate to move open alittle more this
can also cause jams

[Oze]

Re: MPC2800 jams at locations 19 & 20.

And just as a side note....rather than tell the paper that it's their paper...try dropping the fuser temp by a few degrees.
There's a bulletin relating to this and in my experience NO customer takes kindly to hearing that they have bought crappy paper...especially when they have 50 pallets of the rubbish sitting in their warehouse

[CrapAimer]

Re: MPC2800 jams at locations 19 & 20.

Does this machine have a finisher installed , If it has then you have to change the door switches on the bridge unit.

[Jomama46]

Re: MPC2800 jams at locations 19 & 20.

Might be size related. Find out if they jam on the same document on Fridays.

[teebee1234]

Re: MPC2800 jams at locations 19 & 20.

You're lucky in one sense that you have multiple quantity of the same machine on site. If you haven't resolved it yet then I would suggest starting to swap assy's and see if the problem follows. The exit assembly would be my first choice.

[redneckstylin]

Re: MPC2800 jams at locations 19 & 20.

bridge sensors and switches usally trigger power on jams dont they?

[MOSSY BOY]

Re: MPC2800 jams at locations 19 & 20.

Hi Guys,

Thank you all for your responces so far.

I was back at the device on Monday, 4 jams logged at 19. Again unable to fault on testing.

Changed the fusing exit sensor, reduced fusing temps by 5 degrees.

On another note (maybe relevant) ACC had never been carried out. So I performed ACC. Maybe toner concentration too high???

I will keep you posted.

Thanks again for your replies.