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Brother HL5250DN Printer duplex problem

Hi,
The exit rollers at the top of the printer, after the fuser, are turning the wrong way when starting printing. causing paper to stop at these rollers.
any ideas?

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  • 3 more comments 
  • Dave Long Nov 08, 2007

    Thanks for info.
    But all the parts appear to be intacct.
    The fault occurs during a print run. when the paper reaches the top rollers the paper jams. 've observed these rollers during operation and they are turning against the paper flow, therefore causing the paper to stop at these rollers.

  • Dave Long Nov 11, 2007

    Soulvisitor,
    Thanks for the info.

    The paper is being picked up - goes thru the drum to be printed on, goes thru the fuser to be fixed, then bingo it jams at the rollers that feed it out into the out tray. (just under the lid)

    Sharpman

  • Anonymous Jan 25, 2008

    I have the exact same problem when trying to duplex on my HP P2015dn. I can print single sided fine but when trying to duplex i get the jam after the paper tries to go in and print the second time through. Not truly sure if it is a jam however it almost seems as if the rollers dont catch the paper on the second pass.

  • con01 Jan 29, 2009

    My paper also jams because the exit rollers turn the wrong way,

    Can anybody help?

  • kocoman May 21, 2009

    Can anyone tell me what "mod" Soulvisitor is talking about? The reply seems incomplete?

    I have an serial number "C5" (March/05) unit of MFC-8840D and it has this problem too.

    Thanks

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My solution to this problem was different: I cleared the paper jam from the rear of the machine, pulling the paper out from the back. This fixed the constant paper jams that were preventing me from printing duplex.

Back story: I began getting paper jams in high humidity (but not necessarily outside the operating levels recommended in the manual), and sometimes changing paper to "recycled" or "thin" allowed me to print without curling or creasing. But then it got to the point where I could no longer print duplex at all without curling or creasing. I didn't notice at the time that I could print single-sided okay, and after research feared the fuser unit was breaking down, with too high temperature, hence the curling. However, the machine has only seen light use, and at 13k pages printed was way under the projected 100k pages life of the fuser. Once I figured out I could print single sided alright, that suggested a problem with the duplex. I tried the solutions above, taking everything apart, cleaning them, opening/closing the rear, making sure the white latches were fully engaged (I think I know which ones were being discussed, but still not entirely sure). This didn't fix the problem, still constant jams with curled paper when printing duplex.

Then I realized I normally clear them by opening the front and pull the paper out. This is the reverse direction from the way the paper feeds. I switched to clearing from the rear, which means pulling the paper out in the feed direction, which fixed the problem. I suspect that the paper wasn't feeding properly back into the fuser/drum from the duplex tray, and pulling it in the right direction helped get the rollers back in the right position?

FWIW, this is a refurbished Brother HL-5250DN with a serial number indicating it's from the production run up to K6J702822 that SoulVisitor mentioned. Presumably it was fixed by Brother, but perhaps the fix wasn't totally reliable...

Posted on Sep 05, 2013

  • benjamin Oct 02, 2013

    This turned out not to be a permanent fix: the paper jams came back. Turns out there was nothing wrong with duplex rollers or fuser. Printer was over feeding an extra sheet from both the bottom tray and the manual feed tray. (Test by printing just one page and see if it mistakenly takes up more than one page.) The take up roller was running for too long because the arm was catching on a disintegrating foam pad on the solenoid. Had to take apart the printer to fix, see here for the how-to:http://www.fixyourownprinter.com/forums/...

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Hi all,
My rollers were also inexplicably turning the wrong way when trying to print -- like it was an incomplete duplex job. But in my case, my cat LOVES to sit on the printer and gaze out the window. I suspected that debris or whatever was causing some sensor somewhere to freak out.

So, I took one of those dust remover air cans, took out the toner cartridge, opened up the unit as best I could, front and back, and just sprayed as best I could.

The unit sure LOOKED good, but, better yet, the rollers started going the correct way and now she prints as good as ever.

Posted on Jan 01, 2011

  • pgcpro Mar 06, 2011

    I've had this problem happen twice. First time around, I assumed one of the sensors was blocked. So I opened it up, took a can of air, dusted it all out as best I could, especially up near the rollers, reset it to original factory settings ... and then it worked fine. This was two months ago.
    Two weeks ago it did the same thing. Today, I replicated all the above with no success. Then I "actuated" the white spring loaded clips as suggested and now it works fine. Fickle machine, but I'm glad to have it back on line. It's a true beast.

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I have had the same exact problem; make absolutely sure that the exit chute is seating properly. With the exit chute open (as if to clear a paper jam) actuate the white spring loaded clips that hold the exit chute, mine were not traveling to their full extension and by moving them a few times this resolved and the exit chute was held more firmly and the rollers spin the right direction.

Posted on Nov 22, 2007

  • pgcpro Mar 06, 2011

    I had this problem before, and I assumed a sensor was dirty, so I opened it all up as best I could without taking things apart, and gave it a major-league spray job with a can of air, especially near the rollers and where I thought sensors might be housed (I was guessing). Then I put it all back together, reset it to factory, and, presto, worked fine.

    Now, it did it again two weeks ago (my cat likes to sleep on the printer!), so I replicated what I did before -- and it didn't fix it! Then, I cleared the paper jam, and "actuated" the white spring loading clips in the back, just as the 'Guest' above suggested, and now it works fine!

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I have never seen that happen on one of these.

check to be sure that they go backward at the end of printing, they may reverse on startup

I think maybe you are missing the door that sits inside the rear door (called outer shute assy). When you open rear door there should be another before fuser.


How old is this machine, because there is a fuser and outer shute and cover mod, that goes in to early product run of this model. Machines affected are from the Initial production up to and including Serial No.'s K6J702822 (last 9 digits of S/N), this mod is to help with paper curling at exit causing jams.

Posted on Nov 08, 2007

  • 1 more comment 
  • Soulvisitor
    Soulvisitor Nov 08, 2007

    heres a bit of brother info, the first two digits of the LAST NINE of the serial number indicate build date, so a K6J702822 ending serial no. means it was built K6 = Nov 06

  • Soulvisitor
    Soulvisitor Nov 08, 2007

    sn is ?????????????????????


  • Soulvisitor
    Soulvisitor Nov 09, 2007

    Hang on so it happens during a print run, so it happens not every print, is this the case?, cause if it works on a single print , then those rollers going reverse could not be the problem. It could be that the printer is not picking up paper causing print run to stop. I will think of these rollers being able to turn backwards soon when I have one of these on my desk next and report back..

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