ARM277N POD1_ND jams

[bilyahn]

Have this machine giving me intermittent POD1 jam codes. Have flashed the machine, done the modifications to the fuser and delivery section. New Paper delivery guide and frame. New tray one rollers. Have swapped parts from other units to include just about everything in the delivery section, including the entire unit.

Can make copies to the finisher without jam issues on 1 sided. When I exit to the center tray 1 sided or 2 sided there are POD1_ND (always) jams. The paper stops at the same point everytime but the number of copies varies, anywhere from 7 to 25 copies. Have also checked the connectors and interconnecting wiring. This happens mostly with jobs of 25 copies or more to start with. With jobs of only a few copies there is not an issue.

Any other suggestions? It is a very aggravating issue for us and the customer.

Thank you for your time and effort in this matter.

Bil

[blackcat4866]

The most common cause for the POD1_ND jams is a worn two-stage fuser drive gear, the one on the inside of the back frame. But considering how far you've gone with this I'm sure you've changed that back at the beginning. The only other time I've documented POD1_ND was on a Leopard with the old style fuser inlet guide. The mylar guide was peeling off, obstructing the path.

Tell me if I'm thinking of the wrong machine, but isn't there a spring wrapped clutch that drives the delivery and part of the duplex? I've had to clean and grease those before. I seem to recall seeing that timing belt on the clutch frayed, too. If none of that helps, I think I'd go right to the delivery motor. That's about all I've got.

Let us know what you find. =^..^=

[bilyahn]

If you mean the gear that has been modified? Yes that has been replaced. There is an exposed spring clutch on this unit so I will go back and check that out as well. Thank you for the suggestion blackcat.

[Dark Helmet]

That spring clutch just under the fuser on the rear frame side is just for the duplex rollers in the side door.

If you ever get jamming in the duplex cut the tab off the spring were the pipe would hook into. The tab can hit the frame, loose tension and stop driving the rollers but this won't help your problem here.

I remember seeing in a bulletin that the cleaning felt on that machine can shrink and causing jamming issues. I don't know how the hell that happens or how it even causes a jam but it's something to look at. You can order a entire fuser for that machine for like 65 bucks. Supply# is AR-272FU

[bilyahn]

Okay, here's an update. Went back and changed the fuser, main drive, duplex drive and motor, main motor and just for S&G the registration and feed clutches. Problem still exists. I did them in sequence, one at a time to see if I could isolate the problem. I am now leaning towards some kind of board problem? Any suggestions?

Thank you for all of the help so far.

Bil

[blackcat4866]

Is the delivery unit that you installed new or nearly new? I've come across situations on Panthers where a tech would take a used delivery unit (which wasn't much better) and end up with very similar results. The Panther delivery units start to crumble with age, and I suspect that the Andromeda delivery units will do the same thing.

Have you tried removing the finisher to see if it makes any difference? I don't have much confidence in these finishers. =^..^=

[bilyahn]

Is the delivery unit that you installed new or nearly new? I've come across situations on Panthers where a tech would take a used delivery unit (which wasn't much better) and end up with very similar results. The Panther delivery units start to crumble with age, and I suspect that the Andromeda delivery units will do the same thing.

Have you tried removing the finisher to see if it makes any difference? I don't have much confidence in these finishers. =^..^=

Brand new delivery frame and guide. Did not get the whole unit but I have used 3 different delivery units and get pretty much the same results. I have not removed the finisher yet. I was thinking about that on the way home yesterday. Thank you for the suggestion.

[vincent64]

Here is one more thing to try, was a T/B on a plate that covers the MFT feed rollers, its also where the side door latches to, its been changed to pull the door a bit tighter is all.
PCOVP0107QSZA =1 cover plate, multi frame
That is the p/n I used to order the plate, dont recall the T/B number though.

[oldrn]

You say that the paper stops the same place every time. Where does the paper stop? Any damage to the paper such as on lead edge?

[bilyahn]

You say that the paper stops the same place every time. Where does the paper stop? Any damage to the paper such as on lead edge?

The paper stops at the output of the fuser right at the gate to be directed to the center tray or finisher. There is no damage to the lead side of the paper.

[Dark Helmet]

Ok so i was thinking the wrong sensor.

Ive had jamming issues at that paper gate in the deleivery unit due to that gate getting a bit warped and just snagging the paper (no finisher or optional tray installed). There is a solinoide that runs that gate and it can be adjusted so it swings further out of the way. My machine was hit and miss though, it did not jam every time. You can pull the fans out (just let them hang) and watch the paper go past.

I'd be interestd to check the operation of that gate solinoide. Maybe the gate is i the wrong position and the paper is taking a wrong path which is not going to pass the expected sensor.

[bilyahn]

Ok so i was thinking the wrong sensor.

Ive had jamming issues at that paper gate in the deleivery unit due to that gate getting a bit warped and just snagging the paper (no finisher or optional tray installed). There is a solinoide that runs that gate and it can be adjusted so it swings further out of the way. My machine was hit and miss though, it did not jam every time. You can pull the fans out (just let them hang) and watch the paper go past.

I'd be interestd to check the operation of that gate solinoide. Maybe the gate is i the wrong position and the paper is taking a wrong path which is not going to pass the expected sensor.

Thanks Lawrence. I thought about the gate being warped as well and watched the solenoid operation from the rear side and did a minor adjustment, no joy there either. I have watched the operation with the fans removed and did not notice anything unusual with the gate (it does not move from it's initial position once copying starts). My boss went to check out the operation yesterday so maybe he found something that I might be overlooking. Will keep you updated.

[bilyahn]

Replaced the xfer unit assembly. Basically swapped out the side drawer for the transfer unit. So far so good. Was able to make several hundred copies without a jam.

Thanks to everyone for all of the great suggestions.

Bil

[blackcat4866]

Perhaps the separation or transfer was shorting. The paper would try to drum wrap, but since the drum is so small it would separate due to diameter separation only, resulting in a slight delay. Maybe enough to pull your POD1 jams. I've always changed the transfer assemblies at 75K so I've never seen one exceed that count.

Thanks for sharing. =^..^=

[oldrn]

Does the image on the paper show any signs of timing problems - shifted on the page at all?