MP 171 Paper Feed Jam

[ABS tect]

I have a 171 that keeps jamming right out of the tray like it has a bad paper feed clutch. The paper makes it like half an inch past the paper feed tire and then it jams, usually what the customer describes as a "phantom jam", with there being no paper to remove. I have seen this tons of times before and it almost always was either the pf tire or the pf clutch. But nothing is working! I replaced the tire, then the clutch, then the whole tray, and then the circuit board that the clutch is connected to, and still nothing...any body see this before? Could it be a sensor is bad somewhere? Should I replace harness'? Maybe try another clutch (i guess it is possible to have two bad clutches, but usually not). And the other reason why i don't think its the clutch is because i take the paper tray out and cheat it, then run it, and the clutch is turning the white connection that the paper tray connects to! Then, i open the side door and cheat it, run it, and i can see it engage and start to turn and then it is like the motor doesn't have enough umph to keep it going...so weird. I have it at my office so its not a huge rush but i would like to figure this out!

[techmann]

Re: MP 171 Paper Feed Jam

Got to watch out for the cork pad in the tray. If the paper is too tight against the rear endfence, it wont pop up to touch the feed roller. Just a thought.

[slimslob]

Re: MP 171 Paper Feed Jam

Check the actual jam number. If it is a feed jam the code should be J003 for tray 1 or J004 for tray 2. If you are getting any other codes in the jam history, check them to see what they are. That sheet of paper that is half an inch past the feed tire could be from failure to separate properly and a second sheet of paper is being dragged forward by the last sheet fed and getting detected as a trail edge (lag) jam. If you are not getting any jam history but have a large number for J001 in the location counts, you most likely have a door switch that is flaky.

[sandmanmac]

Re: MP 171 Paper Feed Jam

Maybe the Side cover safety switch needs a little adjustment?
Seen lots of machines that just the vibration of the machine when feeding causes a temporary door open conditon (which doesn't appear in the display) and then jams.
Although for whatever reason, the times I've run across it, it seems to occur more as the paper is exiting. Nevertheless, It can't hurt to bend the switch outward just a touch.

[apump]

Re: MP 171 Paper Feed Jam

could be your right side door. I had to replace the door with same issues. comes open just enough to cause jam

[copimen]

Re: MP 171 Paper Feed Jam

Did u also try bypass tray is it also jamming? also try input check on your Registration sensor.

[HitMan]

Try taking the registration sensor arm out and repositioning, have had that fix jamming issues. It's like the sensor arm isn't sitting right but you cant really see it. Also is the black guide for tray 1 there. You can see it from the right hand side and it's usually held in with a white clip or cable tie

[batabusiness]

Re: MP 171 Paper Feed Jam

If the bypass tray is working , try replace pf clutch by bypass clutch , may be your test clutch was out of order ,

[ABS tect]

Re: MP 171 Paper Feed Jam

Thank you all for the replies...sorry i took a bit to get back.

I will definitely look at the jam log and see what i come up with there, no tray two just the single tray.
I put a new separation pad when i replace the pf tire so i don't think that's it, but i will check the guides as first suggested and also check the black registration sensor to see if that is seated properly.

On the other matters...it is not jamming from the bypass tray so that eliminates a lot of stuff there. Also i don't believe it is the side door safety switch because remember i said that i jimmy'd it by opening the door and pressing in the sensor my self to run it so i could look in it and it still jammed while i had that switch pushed all the way in.

I'll be back with an update on this matter shortly! Thanks!

[sandmanmac]

Re: MP 171 Paper Feed Jam

Also i don't believe it is the side door safety switch because remember i said that i jimmy'd it by opening the door and pressing in the sensor my self to run it so i could look in it and it still jammed while i had that switch pushed all the way in.

I'm not suggesting theres anything wrong with the switch.
I'm suggesting that the metal actuator may be slightly bent inward which happens over time, so eventually the side cover doesn't push on it quite enough so it needs to be bent slightly outward.
You "cheating" the switch to watch operation would obviously apply sufficient pressure.
It takes literally 2 seconds to try/test it, but disregard it if you like

[ABS tect]

Re: MP 171 Paper Feed Jam

I apologize guys...i guess i jumped the gun. I replaced the pf clutch again and everything seems to be working fine. I should have done that to start with i just had a hard time thinking that two clutches in a row would be bad but it happens! Sorry to waste your time...but i did get some good info on other things to look for in the future. Thanks!

[geardriven]

Re: MP 171 Paper Feed Jam

HI
I have several hundred of these copier in the field what i find is the shaft that holds the feed tire is bent if you spin the tire you will feel it get tight then loose try swapping the paper tray
and see if the jamming stops. sounds weird but it happens all the time sometime you can adj the bar by pulling up on it spin the tire try to get it so it spins smooth.