MX-M7570 POD!-N POD1_NA random jams

[bilyahn]

Have this unit, 2 years old with 361K images. It will randomly throw a POD1_N or NA jam anywhere from 2 to 1000 images. Client uses exclusively trays 1 and 2. Can't seem to duplicate this when I am there. I've run hundreds upon hundreds of copies without a problem.

All firmware and maintenance are current (actually not even to it's first PM point yet)
fuser has been rebuilt recently
all rollers in the LCT are new
removed the fuser drive unit to check for binding
everything seems to be in working order
replaced the POD1 sensor (unit worked for 10 days without a jam and now has started up again)
unit is on a dedicated 20A line

As a side note I recently replaced the fuser drive motor for L4-03 problems but the jamming per-existed the L4 problem (although they may be related)
Previous generation had a clutch problem in the LCT drive but that would normally cause TRAY1_L or TRAY2_L, I am wondering if this might be something similar? This is at a school and the contact is pretty good at checking paper in trays and all of the other operator caused issues so I'm not thinking damaged paper. They use the same brand in 11 schools and this is the only one having issues.

Any an all suggestions would be greatly appreciated. I am headed back there in the morning to observe and see if I can find any clues.

Thank you for your time and effort in this matter

Bil

[Nachoman4life]

Re: MX-M7570 POD!-N POD1_NA random jams

A 22-6 and 23-2 would help alot, if you can provide them...

[bilyahn]

Re: MX-M7570 POD!-N POD1_NA random jams

Can't seem to upload the images. I will try again later

Thank you

Bil

[copiertec]

Re: MX-M7570 POD!-N POD1_NA random jams

Have you tried changing lead edge adjustments in 50-10? Try changing them by +.5mm.

[bilyahn]

Re: MX-M7570 POD!-N POD1_NA random jams

Have you tried changing lead edge adjustments in 50-10? Try changing them by +.5mm.

No I haven't, interesting idea.

Thank you

Bil

[bilyahn]

Re: MX-M7570 POD!-N POD1_NA random jams

Here are the 22-6 and 23-2 printouts

QES Copier_20220208_101753.pdfQES Copier_20220208_101735.pdf

Bil

[JLSam]

Re: MX-M7570 POD!-N POD1_NA random jams

Here are the 22-6 and 23-2 printouts

[ATTACH]51963[/ATTACH][ATTACH]51964[/ATTACH]

Bil

Replace tray 1 rollers @ 211K?

[mloudy]

Re: MX-M7570 POD!-N POD1_NA random jams

I had POD1_N jams on a MX-M654N last year. MICAS showed POD1_N jams 5 days in a row. I had this in the service notes: "Lower transport roller in paper pass unit was unsprung on the front side. Reset tension spring on this roller."

The front door on the fisnher was also out of wack.

I barely rememeber this call but MICAS says that the POD1_N jams stopped after my visit. Not sure which one it was.

PPU.jpg

[mloudy]

Re: MX-M7570 POD!-N POD1_NA random jams

The MX-M7570 in our showroom is at:
BUNDLE VERSION 04.53.t2.00
ICU-MAIN: 04.50.t2.00
FINISHER(3KFIN): 01.01.t2.0a


Your 22-6 is showing:
BUNDLE VERSION 03.00.t2.00
ICU-MAIN: 03.00.t2.00
FINISHER(3KFIN): 01.00.t2.00


This machine was running fine at 03.00.t2.00 but I think there is newer firmware.

[bilyahn]

Re: MX-M7570 POD!-N POD1_NA random jams

Replace tray 1 rollers @ 211K?

Good morning,

Sorry should of mentioned tires are new in both trays. I rarely reset the maintenance count for tires.

Thank you

Bil

[bilyahn]

Re: MX-M7570 POD!-N POD1_NA random jams

The MX-M7570 in our showroom is at:
BUNDLE VERSION 04.53.t2.00
ICU-MAIN: 04.50.t2.00
FINISHER(3KFIN): 01.01.t2.0a


Your 22-6 is showing:
BUNDLE VERSION 03.00.t2.00
ICU-MAIN: 03.00.t2.00
FINISHER(3KFIN): 01.00.t2.00


This machine was running fine at 03.00.t2.00 but I think there is newer firmware.

Thank you, I will have to check this out. I thought I had the latest and greatest installed!

I will check the follower rollers in the paper pass unit. I have had all kinds of issues with these so something definitely to look at.

Bil

[Nachoman4life]

Re: MX-M7570 POD!-N POD1_NA random jams

Given its a school, probably alot of coping with the feeder open, books, smaller originals, causing a dark lead edge. I agree increasing the lead edge margins a bit is a good idea, have had to do it numerous times at schools in the past

[doyvid]

Re: MX-M7570 POD!-N POD1_NA random jams

22-3 shows you had 50 POD_1 jams in ~16k prints.. at that rate, expected number would be 150 jams per 48k prints..

The history only goes back so far, but you have 184 jams and 49k total prints on the fuser. The math checks out somewhat, assuming most of those were POD_1.

What I'm getting at: maybe the problem started when you changed the fuser.
Worth a try swapping the fuser to another machine to see if the problem moves, if you haven't ruled that out already.


Unrelated, I notice you have zero H5-01 errors, which usually accompany multiple POD_1s. Is there by any chance a SIM that disables the H5-01? Would be handy to know if that exists, for future reference.

Also, has anyone devised a way to prevent the crappy white fuser pawls from falling off and getting jammed inside the rollers?

[bilyahn]

Re: MX-M7570 POD!-N POD1_NA random jams

22-3 shows you had 50 POD_1 jams in ~16k prints.. at that rate, expected number would be 150 jams per 48k prints..

The history only goes back so far, but you have 184 jams and 49k total prints on the fuser. The math checks out somewhat, assuming most of those were POD_1.

What I'm getting at: maybe the problem started when you changed the fuser.
Worth a try swapping the fuser to another machine to see if the problem moves, if you haven't ruled that out already.


Unrelated, I notice you have zero H5-01 errors, which usually accompany multiple POD_1s. Is there by any chance a SIM that disables the H5-01? Would be handy to know if that exists, for future reference.

Also, has anyone devised a way to prevent the crappy white fuser pawls from falling off and getting jammed inside the rollers?

Thank you for this. I actually rebuilt the fuser, don't have a spare but was thinking along these lines as well. I can swap with another machine that is close by. Unit has gone 1500 images since last jam so I'm checking in everyday. Looks like they had 8 jams last night at 5:30PM

Don't know about the sim but they generally don't get 3 jams in a row there's always at least 1 or 2 copies that make it through before it jams again.

I leave the crappy picker fingers in until they start to fall out then I just remove them. Doesn't seem to cause any problems, I started doing this with the 754's. This unit still has both picker fingers.

Thank you.

Bil

PS I have updated the firmware to latest version from 10/1/2021 production

[Nachoman4life]

Re: MX-M7570 POD!-N POD1_NA random jams

The M7570 fusers have been a pain to us also.. New machine fusers make the first 300k, but after the 1st rebuild have been some trouble for us also. Have 2 mxm7570 in a bank (70 miles away), 50 ft apart, mostly evenly used, (one is getting more use now), the first rebuilds were done by co workers that have 20+ years on sharps each. Had troubles with web wraps, and POD jams, and h5-01 errors, fuser ghosting also. Bought new fusers for both, went mostly ok untill the 600k pm came, rebuilt, by co workers, and had more of the same. I get sent up (20yr Sharp vet also) rebuild both with roughly 50k on them and have some pod jamming, but not as bad as before, but still too much (by 900k). The co workers did the rebuild correctly, but problems still happened. I my self dont have many M7570, but I do have a few that are 1.2 Mil and still running strong (lucky they are local).. Other than the Lh pawls are very easy to knock out of place. Bearing placement (relative to frame) is a known issue and known to us all, so that is not a problem we have had. One thing that comes to mind, and I have mentioned it before on CTN, is I believe the LH web is too "dry" compared to Sharps webs in the past. None of this will fix the problem but its just an observation of mine.