Question about Brother Fax Machines

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I have a brother printer mfc 7420. It wont print; it says that the back cover is open. There is only one big door in the back which I used to get a piece of paper that was stuck. It is now firmly closed. Can you please help me?! Thank you. Ben Aguirre aguirre@udel.edu or 302 731 8289

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  • Benigno Nov 14, 2008

    the advice I received did not solve the problem.

  • Benigno Nov 14, 2008

    I am still faced with the same problem. I could not find the sensor inside the back door. I also used an air blast duster in this area, shaked it real well, but nothing happened

  • Benigno Nov 14, 2008

    I could not find any piece of the sensor anywhere inside the machine

  • Benigno Nov 14, 2008

    there is no paper jam, I removed the tray and also looked from the back

  • Benigno Nov 14, 2008

    I am trying to remove the cartrige and I am having a hard time. I do not see it in the back. 

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Hi there
This is case where the message is used for several situations, include a paper jam. Try this

http://welcome.solutions.brother.com/BSC/public/us/ca/en/faq/faq/000000/000600/000096/faq000696_001.html?reg=us&c=ca&lang=en&prod=mfc7420_all&Cat=4

I hope this helps. If so, please take a moment to accept and rate my solution accordingly

Posted on Nov 14, 2008

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  • pmgca Nov 14, 2008

    Note, in the case of the tutorial below, the paper jam is internal

  • pmgca Nov 14, 2008

    Sorry, I meant the tutorial above

  • pmgca Nov 14, 2008

    To locate the elements, follow the images in the tutorial

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Remove cartidgw thwncheck there is noyt any paper jam.
also refix cartidge again.
then try/.

Posted on Nov 14, 2008

  • kishor khatri
    kishor khatri Nov 15, 2008

    check in the back side of your printer to .

    therre must be paper jam.

  • kishor khatri
    kishor khatri Nov 15, 2008

    check in the back side of your printer to .

    therre must be paper jam.

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Sensor fails to detect the closed door. Either open the back of teh printer and look for the sensor or try giving it a nice slap on each side first.

Posted on Nov 14, 2008

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Remove all the connections of the device.ust totally off the printer.and tap slowly on all the sides of the printer.it has a sensor that detects the door that sensor is slightly moved from inside and need to be adjusted properly..then just connect the printer and check the error should go.

Posted on Nov 14, 2008

  • fixyy Nov 14, 2008

    also if u have a air blower machine blow in the device from all the sides if any thing getting that sensor blocked it will be blown and that sensor can come to its position easily and starts working.

  • fixyy Nov 14, 2008

    if that sensor is broken due to any reason it will not detect as there is no sensor.it is very delicate and very thin.shake the device up side down and check if any broken piece falls down.and it could be also possible that it is blocked very firmly so not been able to come at its position.

    then servicing your printer is the option remaining as in servicing all the parts of the printer will be opened and cleaned.so it will clear every thing.

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