FS-4200DN strange jams

[Kyo fan]

This is a new one to me, and so far i haven't heard of anyone with the same issue.

Had two of these today with the same problem. Paper randomly stops and tears a bit just when it's about to be pulled from cassette. The printer only shows "Paper jam cassette 1" and event log is showing J0501 (the last 16 occurrences). There is nothing broken, bent on deformed in any way on the paper cassette, and the 3 pulleys aren't worn out yet (both printers have about 100k on them). First i tried with pulley and paper dust cleaning, adjusting cassette margins, checking paper settings, upgrading firmware etc. After all that i ended up replacing the retard roller with brand new one, and after that replaced entire paper cassette.
Unfortunately none of those mentioned helped, still it randomly starts to jam and paper stops like every 4-5 pages.

I provides pics so you can see how it looks. Thx for any input.

1.jpg2.jpg

[HenryT2]

Re: FS-4200DN strange jams

What kind of paper are they using ?
Is the pan in the cassette lifting correctly ?
Is the Paper Empty actuator seated properly and functioning correctly ?

This could happen if the rear cursor is not set correctly, but, you did say you
checked this, and even changed cassettes .

[blackcat4866]

Re: FS-4200DN strange jams

The situation you describe is usually by a flat spot on the separation roller. At 100k I'd replace rollers for a jamming problem. =^..^=

[Kyo fan]

Re: FS-4200DN strange jams

I replaced 3 rollers and so far so good. Why do i have a feeling that somehow pulleys aren't what they used to be on older machines, they used to last much longer.

[leroyal]

Re: FS-4200DN strange jams

I replaced 3 rollers and so far so good. Why do i have a feeling that somehow pulleys aren't what they used to be on older machines, they used to last much longer.

I had this problem today....the very tip of the fuser exit switch was broken off, paper was riding over the top of it. Super glued a piece of plastic to the actuator and all was good.

[blackcat4866]

Re: FS-4200DN strange jams

I replaced 3 rollers and so far so good. Why do i have a feeling that somehow pulleys aren't what they used to be on older machines, they used to last much longer.

I don't know how far you go back Kyo fan, but back in the analog days PF rollers were 35mm or more in diameter. Gradually they've gotten smaller and smaller. Some of the Ricoh rollers are less than 16mm, which is too small to be useful, in my humble opinion. I'm sure that the roller materials have improved over the years, but for longevity I'd like to see some larger feed rollers. There's more surface contact with the paper. =^..^=

[Kyo fan]

Re: FS-4200DN strange jams

One was fixed with pulleys, but this second one has something else. The first paper stops just when it exits fuser unit, as you can see in pics. The second one is pulled like half below, and second half is hanging in the cassette. Event log says J0501 (The registration sensor 2 (RS2) does not turn on during paper feed from cassette 1). leroyal mentioned sensor actuators, but in my case the are all fine. I'm thinking this might be paper quality issues couse this client uses some of the lowest quality paper i have ever seen. You don't fully realize how rock solid FS-3920/4020DN (have many that reached 1 mil with just 1 maintenance kit) were until you start messing with these.

3.jpg4.jpg

@blackcat Yep, it's like with cars these days.

[DWise]

Re: FS-4200DN strange jams

One was fixed with pulleys, but this second one has something else. The first paper stops just when it exits fuser unit, as you can see in pics. The second one is pulled like half below, and second half is hanging in the cassette. Event log says J0501 (The registration sensor 2 (RS2) does not turn on during paper feed from cassette 1). leroyal mentioned sensor actuators, but in my case the are all fine. I'm thinking this might be paper quality issues couse this client uses some of the lowest quality paper i have ever seen. You don't fully realize how rock solid FS-3920/4020DN (have many that reached 1 mil with just 1 maintenance kit) were until you start messing with these.

[ATTACH=CONFIG]25406[/ATTACH][ATTACH=CONFIG]25407[/ATTACH]

@blackcat Yep, it's like with cars these days.

Could this be something as simple as incorrect paper size selected? Are the prints delayed any on the page (registration)?

[Kyo fan]

Re: FS-4200DN strange jams

It was something simple indeed that i couldn't see right away. If you get something like this, pay attention if client likes to fix things on his own and not tell you about it. The spring under the paper feed assy was missing...

spring.jpg

[blackcat4866]

Re: FS-4200DN strange jams

Good catch. Kyo fan!

Thanks for sharing. =^..^=

[JVergin]

Re: FS-4200DN strange jams

It was something simple indeed that i couldn't see right away. If you get something like this, pay attention if client likes to fix things on his own and not tell you about it. The spring under the paper feed assy was missing...

[ATTACH=CONFIG]25419[/ATTACH]

Here's your bill for my labor!

[nathansipe]

Re: FS-4200DN strange jams

I'm so glad I was not the only one with this problem. It was killing me, then I read this and looked. No spring on mine either. Thanks again Kyo Fan.

[Kyo fan]

Re: FS-4200DN strange jams

One more update on these cassette 1 jams (jam 0501 mostly). I know there is a bulletin about bad paper feed clutch, but in my case it is working just fine.

In case you did your homework (rubber pulleys are new and the spring under is not missing), you can have another reason that paper is not passing the retard roller (it gets torn a bit at the top middle). Unlike the previous line (FS-3920DN/4020DN), new holder feed assy has a white plastic ring added, through which one end of the metal shaft feed spins. You can see it here: http://i58.tinypic.com/wgvswp.png

Unfortunately that plastic ring wears down and you get much wider hole where the metal shaft feed "dances" as you can see here: http://i57.tinypic.com/34e7yja.png. This is at about 208k printouts, but i have discovered several more cases with about 100k on it. Of course you can't order it separately, you have to replace entire parts holder feed assy which is probably a good thing since the metal shaft feed also gets worn out: http://i57.tinypic.com/2e5qnix.png which imo could add to this problem and cause slowdowns in this area.

[Scottb]

Re: FS-4200DN strange jams

"Kyo fan;436730]One more update on these cassette 1 jams (jam 0501 mostly). I know there is a bulletin about bad paper feed clutch, but in my case it is working just fine."

Would anyone have this bulletin, as I can not find it on kyocera's service site. I think my issue may be the clutch, as it has less than 75k on the machine and for good measure I did replace the tires. The jam history has over 200 of the 0501 jams.

Thanks

Scott

[Scottb]

Re: FS-4200DN strange jams

It was something simple indeed that i couldn't see right away. If you get something like this, pay attention if client likes to fix things on his own and not tell you about it. The spring under the paper feed assy was missing...

[ATTACH=CONFIG]25419[/ATTACH]

Why didnt I come here first. I have spent more time and gotten more acquainted with this printer than I wold have liked. This was my problem also.

Thanks for the help guys keep up the good work

Scott