asked Feb 21, 2003 at 12:46pm
Hp HP DesignJet 4000

hp 4000 13.1 paper jam

have a hp 4000, that now indicates it has a 3.1 paper jam, though no paper is really jammed. could there be a dirty sensor somewhere? haven't found much here or anywhere on the 4000. I don't think it even tries to pull paper from the cartridge, it just gives the error after initialization. Any ideas?
Is there any tread left on the feed/sep rollers. There is one in the tray and one just like it in the printer in front of the pick up rollers.
by unknown on Feb 21, 2003 at 1:44pm Add comment
tread looks ok on all input rollers. I did notice that the thick rubber band-looking roller under the toner cartridge looked rather loose. Could this be the culprit? I took both trays out, and toner, and pushed in the door sensor, and it gives the same message after the rollers/gears rotate for about 4 seconds.
by garrett on Feb 21, 2003 at 1:48pm Add comment
Thats the paer transport belt, its supposed to look that way. So if you send a job do you hear the printer even trying to pick up paper? is paper lying flat perfectly in the tray when you open it after a print attempt? any idea what the page count is by the way? The pick up rollers in those printers rarly need to be replaced or cause problems.
by unknown on Feb 21, 2003 at 1:54pm Add comment
The printer doesn't even try to pull paper. The rollers/gears on the right hand side (looking inside face)turns maybe 1/2 a turn before the error occurs.
by garrett on Feb 21, 2003 at 2:09pm Add comment
Power off the printer and remove the parallel or network cable so it doesn't try to print. Power on the printer. Does it go ready? If it still shows a paper jam, there are two sensors to check. One is on the back of the fuser,the other is under the registration flap. If it goes ready and only gives a jam when you try to print, remove the tray and clean the little "D" shaped rollers up inside the printer. The "D" rollers are attached to a shaft that has a linkage at the right end. Sometimes that linkage will break. If cleaning the "D" rollers helps, You need to go ahead and replace them.
by david belton on Feb 21, 2003 at 3:49pm Add comment
Thanks everyone, for all your help. I resolved the problem. there was a small, torn piece of paper UNDER the main roller. (the one that resides directly in front of the toner cartridge) couldn't be found without pretty much breaking the machine down. This small shred was covering a sensor. Got it out, and works fine. I also replaced all rollers.
thanks again.
by garrett on Feb 21, 2003 at 3:57pm Add comment
We have 30+ HP LJ 4000 printers, the primary 13.1 error seems to be caused by the "D" rollers that snap on to the shaft. The old ones causing trouble
are gray rubber, the new replacement are black rubber. Probably could shim the old "D" rollers with tape between the plastic hub and the rubber.
Only need a few thousanths of an inch.
by unknown on Feb 24, 2003 at 10:34am Add comment
I called my local HP support, they also said that very often small bits of paper can cause this exact error. The sensors never fail I was told, well; I found after painstaking testing and de-assembly that there is one sensor hidden in the front paper-feed that would not pull all the way back. It stopped 2/3 into the backposition perhaps due to dust, paper-bits, it's low tension spring or whatever mecanical reason. I was able to remove the frontplastics (black) to get closer to the sensor, but can't find a way to unplug as it's inserted into the core plastic-casing. After some cleaning with highpressure-air and re-positioning it now seems OK.
Yuk, too much work for such a lousy mecanical part.
by unknown on Oct 13, 2003 at 6:46am Add comment
I have a customers printer that is getting paper jams in tray 2 only. Here's what I know: It's not the feed/sep rollers. It's not the pickup rollers. It's not the clutch on the sep roller and it's not the paper tray itself. When I run a paper path test and look through the back side of the printer to watch the paper, the pickup rollers grab the paper and move it forward about 2 inches, then the paper falls back into the tray and the 13.1 error occurs. Any solutions would be greatly appreciated.
by gwrider02 on Oct 2, 2006 at 11:39am Add comment
If it's going 2 inches, then I'd suspect something like a scrap of paper in the path. That's when we get out our "chingaderous stick". Technical term for a thin piece of plastic that we shove up and down the paper path to dislodge offending paper scraps. Cardboard will work just as well as long as it is thin and stiff.
by moe on Oct 2, 2006 at 1:55pm Add comment
"If it's going 2 inches, then I'd suspect something like a scrap of paper in the path. That's when we get out our "chingaderous stick". Technical term for a thin piece of plastic that we shove up and down the paper path to dislodge offending paper scraps. Cardboard will work just as well as long as it is thin and stiff."

Is this likely to be the same for a HP 4500? I have an identical problem - feeds OK from the manual tray but jams evert time from the normal one leaving the paper 1/4 inch out, or feeds halfway along the sheet then jams. - Anonymous
I've seen the same problem, and the "apparent" culprit (it worked fine afterward) was the rear cover was keeping the tray from fully seating. Try removing the back, pushing the tray all the way in and then replace the back carefully as to not push the tray back out.

by Scott Smith on Nov 20, 2006 at 9:21pm Add comment
Scott in order for him to observe from the rear he had to remove the cover, so I doubt that is the issue. To the user with the problem, you say the paper moves forward 2 inches and then falls back into the tray. If it fall back to where it is not attempting to go up the slot, then the problem is the "CLUTCH". Just remove the separation roller and remove the clutch. Now put the seperation roller back on the shaft and do not worry that is wobbles back and forth. Now do the same paper path test and see what happens. Odds are it will now work. Then all you have to do is remove about 1/2 of the magnetic fillings inside the clutch and it will work fine.
by dmzcompute on Nov 21, 2006 at 5:25am Add comment
I have about 6+ older 4000/4050 printers doing the same thing especially from TRAY 3.

I thought for sure I had tried another TRAY to check for possible problems with the "magnetic clutch" but it continued doing the same thing.

I even suspected the clutch didn't have ENOUGH filings so I put more in!

Anyway, I tried this fix on a 4000, removing about 1/2 of the filings WORKED!

Thanks for the tip. I wasn't looking forward to a 40 screw tear down trial and error week.

BTW, This is one of the few self-help websites that are worth looking into. Many thanks to the host. - Anonymous
You need to start you own thread since the printers are completely different. On yours there are some rollers at the bottom of the ITB tray which grab the paper and pass it to the registration assembly. I have seen where sometimes cleaning them with rubber rejuvanation fluid or warm soapy water can help and other times the complete itb tray needs to be replaced.
by dmzcompute on Feb 4, 2007 at 6:35am Add comment
Thanks, I'll give that a go. I thought it was worth asking before starting a new thread.
by Anonymous on Feb 4, 2007 at 8:34am Add comment
Hi there, I have a hp 4000 that does something strange. It will print just fine and not display any errors, however, on the next print job, it will display a 13.1 paper jam error. I have discoverd that as it prints the last page from the previous job, it will pull a sheet of paper half way up, stopping just under the toner cartridge, but not cause an error until the next job is about to print. ( so a 5 page document will print all 5 pages, but also pulls a 6th page half way up) Does anyone know why it does this ??
by unknown on Nov 20, 2007 at 7:41am Add comment
The fact that it is not producing an error is strange, however, it may be caused by the selenoid which controls the pickup roller. My assumption is that it will work ok if you use the manual feeder. Test by putting a stack of letter paper on the manual feeder and open tray 2. Do the same job and my assumption is that extra page will not be there. If I am correct, then you have to separate the printer into the two halfs and then on the bottom part you have to remove all the screws which secures the cover and lift it out and on the right side will be a selenoid with "L" arm and spring. HP used a velcro like pad on the center post of the selenoid to reduce the clicking noise each time it was activated. Over time the material wears off and all that is left is the glue which held it in place. That causes the selenoid to stick and not return after each cycle and that is probably your issue. Just clean off the glue residue and reassemble and you should be good to go.
by dmzcompute on Nov 20, 2007 at 6:34pm Add comment
Repaired one of those today, only the plate was firmly stuck and when the printer was powered on, it endlessly fed blank paper. It's really a sponge material, not velcro. HP has never learned in the past 20 years that the stuff disintegrates and causes all kinds of problems. I replace it with an adhesive backed felt strip that doesn't disintegrate, but dampens the noise like the sponge was originally designed to do.
by moe on Nov 20, 2007 at 10:57pm Add comment
Thanks for the suggestion...worked.
by leof on Nov 21, 2007 at 5:28am Add comment
dmzcompute's suggestion worked great for me too.
It took me a while to figure out what clutch he was reffering to. I DL'd the 4050 manual and on page 6-49 they talk about the separation rollers. The clutch is on the same shaft and take a few seconds to remove with no tools.
Now to figure out how to disassemble the clutch.
I may leave it out if I break it.
Thanks for the tip.
by Richie_Rich on May 10, 2008 at 8:58am Add comment
I have been working on these for a while and am quite used to the 13.1 errors and adjusting the seperation clutch when they occur. They are generally associated with a kind of rubbing sound that it makes when the clutch is too tight. however I got a 13.1 today that I do not under stand. If I remove the seperation clutch it pulls paper just fine, but with it installed it gets a 13.1 there is no sound indicating that it is too tight. I also pulled a tray from another 4000 and the problem remains. The interesting thing is that instead of it leaving one piece of paper on top of the stack loose it is pulling the entire stack above the guides. Very strange.
by ev0l on Dec 9, 2008 at 8:44am Add comment
Where is the seperation clutch and how do I remove it to do the recommended fix? Any pictures or links to pictures would be handy. - Anonymous
Why does everyone need pictures? Pull the tray out, you are looking at the separation roller. See the black metal thing to the right of it? That's the clutch.
by moe on Jan 23, 2010 at 6:41pm Add comment
Why does everyone need pictures? Pull the tray out, you are looking at the separation roller. See the black metal thing to the right of it? That's the clutch.
by moe on Jan 23, 2010 at 6:41pm Add comment
Very seldom does a clutch go bad...
Look at the feed roller in the tray and the same roller that it touches when the tray is closed.
If the rollers are shiny and smooth, replace them.
by unknown on Jan 27, 2010 at 4:32pm Add comment
Thanks moe. I don't need pictures. Your description if fine. Now how do I take it out without breaking it?

Prink. The only roller in my tray is the gray one next to the black clutch. Both it and the gray one above it look fine.
by olivier on Jan 27, 2010 at 11:06pm Add comment
There is a hinged lift up cover on the left. Put your thumbnail under it and lift it to the up position. On the pickup roller, they put these convenient pinch to release tabs. With your thumb and forefinger of your left hand, you squeeze them together and simultaneously pull on the roller. It will come off of the shaft. Now with the same thumb and forefinger, grasp the body of the clutch and pull on it and it too will come off of the shaft. Then you can follow the rest of the instructions on this thread. Reverse the above procedure to reinstall. Make sure you orient the clutch and pickup roller in the right directions to reinstall them. Also make sure you close the cover firmly before sliding the tray back in to the printer.
by moe on Jan 28, 2010 at 8:12am Add comment
Thanks for the info moe. Very clear!

Now the question is, how do I remove filings from the clutch? Does the clutch come apart? The metal band around it looks pretty well sealed.

The trick with leaving the printer drawer a little bit out does work, but it would be nice to fix the clutch if this is the best way.
by olivier on Jun 30, 2010 at 6:53am Add comment
You point the long shaft end downwards against a table top and with your fingers grasping the center part, you push firmly down and it will seperate. Then remove a pinch of the filings and put it back together.
by moe on Jun 30, 2010 at 9:28am Add comment
Paper jams just before going into toner cartridge. Have cleaned and it still jams same spot. What is possibly wrong
by unknown on Sep 27, 2010 at 11:53am Add comment
Just fixed one of those not an hour ago. Scrap of paper in the feed path between the paper cassette and the toner cartridge. That's what it always is.
by moe on Sep 27, 2010 at 4:38pm Add comment
Check the following information.........
by unknown on Sep 27, 2010 at 10:59pm Add comment
What a totally useless video. Not only is it useless for clearing unseen jams, but it's a deskjet printer that bears about as much resemblance to a 4000 as a Yugo does to a Bentley. - moe
Hey! Hang on there, you make it sound like a Yugo is a bad thing.


I drove an '88 Yugo GV until just a couple years ago, and put a quarter-million-plus miles on that little Fiat engine (which is all a Yugo was, a Fiat made elsewhere). Got laughed at a lot, as I drove past people at the gas station, more often than not. Put in a second alternator to run my ham radio gear and such, removed some extraneous items like an air pump for the emissions control system (And the emissions check after it was gone was better than -with- the thing installed!)

45+ MPG, maintenance required an adjustable spanner, a couple of screwdrivers, and my old Swiss Army knife.... nothing wrong with a Yugo, within it's limitations, if you kept it up. Getting the small tires was a bugger, and wear parts are scarce... It's scrapped now, and I miss the klunky little thing. No, it was not all that comfortable, it wasn't aesthetically nice, but it got me where I was going for almost 20 years.

by wwill1066 on Nov 16, 2010 at 11:34am Add comment
when printing any job, the printer will only process 1 page and then give the 13.1 error. It does not even attempt to pull the 2nd page. Checked paper settings..size/type...all is correct. tried a new tray and even a new toner. Does anyone know why this happens ?
by leof on Jan 17, 2011 at 7:27am Add comment
Does it work OK from the MF tray?
by moe on Jan 17, 2011 at 7:51am Add comment
I know this solution was posted 5 years ago but I am happy to report that it still works. Thanks DMZ. My 4000 had 13.5 error & did the 2" fall back thing. Removed the clutch & it worked. Then removed the clutch filings (following the instructions from moe) & it now works perfectly. Thanks, you rock.
by knowidea on Feb 11, 2011 at 10:35am Add comment
On one of my 4000Ts the pickup rollers are not rotating on tray 3 as viewed from the back of the printer during a paper path test thereby displaying a 13.1 error. While testing tray 2 I can see the rollers picking up the paper. I tore it down & checked the solenoids (tray 3 & 2) with an ohm meter & both of them are the same. I held down the tray 3 solenoid & turned the gears & the pickup roller do turn. I swapped the paper sensor between tray 2 & 3 (just to prove that they are both working). I reassembled it & it worked the same as before. Anyone have any idea where to go from here? Is there a way to manually trigger the solenoids? I have the manual & read most of it as it pertains to this problem. Could it be that the board that sends the signal to the solenoid is not doing so? Is it possible to just remove tray 3 completely? Page count is 146,000.
by knowidea on Feb 21, 2011 at 9:46am Add comment
I resolved the problem by moving the printer to a level surface. In the old position, the tray was hitting the table which was causing it to be out of alignment which in turn caused the 13.1 paper jam error.
by unknown on Mar 24, 2011 at 6:27am Add comment
I don't see anyone having the same problem with the 13.1 paper jam. All I do is turn it on and it goes from initializing to 13.1 paper jam. I have torn this thing apart and put high pressure air thru to try and clean out any dust or paper, but nothing changes. Help?
by unknown on Apr 6, 2011 at 11:50am Add comment
It's either going to be the sensor arm on the fuser or the one behind the mf assembly. If you remove the fuser, check that the optical sensor on the right side didn't get knocked loose and the arm moves freely. Remove the MF assembly and check the sensor arm behind that as well. It's always either one or the other. - moe
OK. I got my printer at a thrift store for $25. It had exactly this problem and after cleaning and fussing I took apart the clutch as recommended. Tapped out a few filing and it worked like a charm.

I would NEVER have done this on my own. Thanks guys!

by unknown on Apr 9, 2011 at 10:31am Add comment
I've got a similar problem as Knowidea. Tray 1 and 2 print fine. Tray 3 feeds one sheet but there's a long pause between the pickup and feeding it through the rest of the printer. (like it's missing a step) and then it resumes feeding and starts to PU the next page and then dies with the 13.1 error with the 1st page hanging 3/4 out of the fuser and page 2 just pulled out of the tray and 1/4 fed up into tray 2.

Can't be the clutch: Swapped tray 2 and 3, same problem. Even removed clutch just to triple check. All new rollers (even swapped tray 2 and 3 rollers to be sure. Couldn't seem to get tray 3 separated so I could see the mechanisms inside. I'd like to find that pad that DMZ was talking about but not sure what 'splitting the printer in 2' refers to. :)

Any help would be... well... helpful! :)
by unknown on Aug 3, 2011 at 1:33pm Add comment
Splitting the printer refers to removing the printer from the tray assy. First step is to take the top off. Then the 2 sides. Next remove the formatter assy from the right side. Then you have to remove the metal plate behind the formatter assy. 1 screw on the center bottom left of the printer and 2 long screws going down the front left and right. Disconnect the connectors on the bottom right going to the tray. Then just lift the top off of the tray assy. and you'll have access. You have to take the metal top off of the tray to get access to the solenoids, which are at the front of the tray adjacent to the pickup roller shaft. The pad is not a velcro material. It is more like a foam sponge. It deteriorates to a sticky mess. You need to scrape it off and replace it. We use a piece of sticky back felt that never deteriorates and dampens the noise as well as keeps it from sticking. We sell it on the site in the Specials Section.
by moe on Aug 3, 2011 at 11:12pm Add comment
Cool, thanks for the break-down. I'll have to give it a try. I'll let you know.
by unknown on Aug 4, 2011 at 7:26am Add comment
Well, I found the pads and cleaned them off of tray 2 and tray 3 solenoids and just put a couple of pieces of heavy-duty shipping stickers on the metal and they sound better so I've been putting it all back together most of the day day... Almost there but I've got high hopes (if I can find where all the screws go!) that I'll be back in business :) I'll update after the test.
by unknown on Aug 4, 2011 at 1:22pm Add comment