DSM 2045 wil not clear a jam

[fotocom]

We have a DSM 2045 aprox 250 k, if it jams we cannot seem to clear the jam. we open all doors etc. remove the jam but the machine will not reset. We eventually managed to clear the jam by carrying out a memory clear and this worked. However if the machine jams again it will not clear(unless we carry out a memory clear). We have swapped out both front and side door interlocks. Firmware etc is up to date.
Any tips??

[mikadonovan]

You need to identify which paper feed sensor is culprit ie where is the jam occurring. It is possible to have a small sliver of paper inhibiting the operation of a PI actuator, or the actuator could be out of its hole on one side. Clearing the memory every time you get a misfeed is not the way to approach this problem. Reflective sensors also get dirty with paper dust and may need cleaned.

[fotocom]

Apologies for my description of the problem.
Their is no paper stuck in the machine and all sensors test ok in service mode.
I totally understand that clearing the memory every time the machine jams is not the way to approach the problem (lets accept that as a given).
The problem i have isnt so much a jamming problem, in other words the machine works away fine, however on the rare occasion it does jam i cannot seem to reset he problem no matter where the jam occurs , (I am jamming the machine intentionaly to fault find this problem) .
That is why I thought it might have been a door interlock problem.
So in conclusion the machine will work away happily for weeks without jamming but on the rare occasion it does jam, the copier will not reset.

[mikadonovan]

Ok, that's a little more info. Forgive me, but I may not be on the same page here. A DSM 2045, is that a B082 product code?

[banginbishop]

You need to identify which paper feed sensor is culprit ie where is the jam occurring. .

Agreed. i think its a case of when it jams again check it in input mode to identify the sensor causing the fault along with checking the jam log then start looking along the lines of the IOB board which controls the sensors and if possible try and see about getting this m/c upgraded if you can.

[limo]

Check the positions of the wires in the front interlock switch.Compare it with a working machine

[fotocom]

Apologies again the machine is an Aficio 2045e.
The problem with identifing the jam is as follows:
On the rare ocassion that the machine jams the jam condition cannot be reset, the jam log only registers a jam after the jam condition is reset, so therfore it is not logged in the logging data. The only way that I can get the copier out of this condition is a memory clear (i understand this isn't ideal). So therefore I cannot determine where the jam is occuring. As I said I am jamming the machine intentionally to fault find the problem (in various locations).It doesnt matter where the jam occurs, the machine will not reset.
I have changed the front and side door interlock but no change.
I have also swapped out the IOB board, no change.

[Vulkor]

IF its not registering a Jam, check how many AT POWER ON jams you have had, and when it jams check that again. Sure sounds like a bad door switch on ADF, Bridge Unit, Finisher, Paper Bank, Doors etc

[mikadonovan]

This is possible. Disconnect all the periphirals you can and initiate a jam. If it clears, reconnect them one at a time and repeat the process until you have isolated the faulty unit.

IF its not registering a Jam, check how many AT POWER ON jams you have had, and when it jams check that again. Sure sounds like a bad door switch on ADF, Bridge Unit, Finisher, Paper Bank, Doors etc

[kyoceran]

possibly the three switches located at the front of the fuser are playing up, good luck

[tcs04]

Apologies for my description of the problem.
Their is no paper stuck in the machine and all sensors test ok in service mode.
I totally understand that clearing the memory every time the machine jams is not the way to approach the problem (lets accept that as a given).
The problem i have isnt so much a jamming problem, in other words the machine works away fine, however on the rare occasion it does jam i cannot seem to reset he problem no matter where the jam occurs , (I am jamming the machine intentionaly to fault find this problem) .
That is why I thought it might have been a door interlock problem.
So in conclusion the machine will work away happily for weeks without jamming but on the rare occasion it does jam, the copier will not reset.

Change the Interlock switches above the fuser. They will give a jam indication with no location. Also change the seals between the dev init and PCU then lock the two units together with a self tapping screw. This will stop toner blowing onto the optics / laser and interlock switches.

Before you change them, check the wiring sequence of these switches on the point to point! If incorrect, the machine will not reset after a jam and will require a reboot.

[ucinn]

If the jam that will not clear is at location "c" You must open the door on the right hand side above the big door that exposes the drum and the front cover, then close all three. A lot of customers do not know about this door and can't clear a jam until someone shows them. If I missed you saying where the jam showed on the copier, then my bad.

[tcs04]

My money is still on the switches above the fuser wired out of sequence!!

I saw this after someone changed them to cure codes. He removed them all and then fitted the plugs to the new ones in the wrong order. The machine worked for two weeks and then jammed, after which the customer could not reset the jam, sounds like EXACTLY the same fault you have! Has anyone "checked" or changed those switches on your machine?

You can check the sequence from the plug on the laser diode PCB CN403 pins 1 and 3. They may look ok but you MUST use the point to point to be sure. Remove the switches ON the block, Hold them all down and the release one at a time, you will find (one or more) has no effect and you still have a closed circuit. This will mean that, as ucinn says, one of the doors is not being detected as open and the machine cannot reset.

[fotocom]

Thanks for all your help.
Unfourtunatley my problem persits. However the mahine is back in the shop so the pressure is off, and im finishing up for a weeks leave. Problem is, it will be waiting for me when i get back.
I really did think it wa a switch problem but im almost ruling that out at this stage.

What been done so far? Well the following.
1. All paper feed sesors, reg sensor etc. (basically every sensor swapped out).
2. I/O board swapped out.
3. Front and side door interlocks swapped wiring checked and tested (as per pint to point).
4. Power supply swapped out (clutching at straws at this stage!!!!!)
5. Input checks all testing fine.

As I said the machine copies perfect but again its on the very rare ocasion when a jam occurs that i am
not able to reset the jam.

Im loosing my hair at this stage!

[tcs04]

Just a thought, but as the switches go back to the laser diode PCB, have you tried swapping that?


I STILL think it's those switches out of sequence, this is precisely the same problem I had.