MPC4000 intermmitent jamming at 18, 19 and 20

[Serial Swop]

try cleaning the registration sensor with alchohol or mr mck, or replace it. Had a similar prob it works now.

[df3036]

For the couple of minutes it takes, there are only 2 screws that hold the machine exit in (one from the side above fuser and another behind the fuser exhaust fan) and check for the bushing ceasing on the decurling roller. When it happens, the page is out of the fuser and heading to the exit when it stops. What will happen is the D-shaped belt gear will crack and skip. Took us awhile to find but on certain machines we check it regularly (fly in gold mine)

[cobiray]

For the couple of minutes it takes, there are only 2 screws that hold the machine exit in (one from the side above fuser and another behind the fuser exhaust fan) and check for the bushing ceasing on the decurling roller. When it happens, the page is out of the fuser and heading to the exit when it stops. What will happen is the D-shaped belt gear will crack and skip. Took us awhile to find but on certain machines we check it regularly (fly in gold mine)

Now that's a useful post, thank you!!!

[df3036]

Another thought. There is a bulletin on the MP4000 that affects all machines with the same feed stations. They have changed a bushing in the tray for jamming out of the tray. It does work. I had my own MOD for a time before getting a proper part number for the bushing. Now you are not having the right jam codes BUT I don't always trust them. See image: Item 20 MP4000 Bulletin 51 on TSRC.

bushing.jpg

[steeve]

mp4000 jams

check the bridge unit switches.

[cobiray]

check the bridge unit switches.

If it had a bridge unit (he already stated there was no bridge or finisher).... it would be throwing 001 jams with the bridge interlock issue. Also, there is a firmware update for the 001 jams due to poor contact inside the switches...

[nick40]

The day before yesterday I replaced the 2 front door interlocks, the right door push switch and the paper feed motor.
I was there this morning and the jam counter was zero. They only ran about 1000 prints on it so it is too soon to celebrate.
I will post back if this fixes it.

[nick40]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

I was there this morning and the jam counter was zero after about 4k prints. Either paper feed motor, front door interlocks or right door push switch fixed it.
Thanks everyone for their replies.

[Andy6096]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

I would replace the door switches. Ive heard of guys having issues with them and this could be similar to what they've told me about. It may not actually flash the message or anything of that sort but it could be so quick that its undetectable. Just a cheap alternative suggestion because it sounds like you've been thru the gambit on it.

[benn84]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

hi
im having the same problem on a relatively new machine (about 40k) the customer believes its only when doing double sided, i havent yet seen it jam but its getting 19 and 20 jam codes about 11 in a week, just wondering if there was a final solution , should i be ordering up door switches
regards
ben

[Jomama46]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

Good place to start and include the bridge interlock switches too, as mentioned by cobiray

[benn84]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

It doesn't have bridge unit so will go with door switches
Regards
Ben

[Jomama46]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

Keep us updated

[Cipher]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

I have had the exit section of the machine start ceasing at the decurling roller. The bushing gums up and even wears the rollers shaft. Replace the bushing and the roller and do not oil. It has been worse in dirty environments and on several machines we have.

Have had this happen on a few machines as well.

[benn84]

Re: MPC4000 intermmitent jamming at 18, 19 and 20

I will check that also