Question about Brother MFC-5840CN All-In-One InkJet Printer

6 Answers

Init unable AF

The printer has a grinding sound it seemly is trying to move the scan bar but can't.then it display the message init unable

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  • Anonymous Mar 17, 2014

    my brother mfc-825 printer is reading Unable to Init. AF

  • Anonymous Mar 22, 2014

    Displays error message and makes a rattling noise as if trying to connect to something.

  • Anonymous Mar 25, 2014

    unable to print init.af

  • Anonymous Mar 25, 2014

    What does this means machine err0r 50 and Init Unable 50?

  • Anonymous Mar 25, 2014

    Unable to print, photocopy, scan, ink blot and etc

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6 Answers

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AF means that the CIS scanner is (can) not (get)in right position. This could be because of a broken scanner flat cable, or a loose flatcable or a defective pcb. Check flatcable connection at the pcb (Open scanner like changing carts, open flatcable cover with a screwdriver. Does the flatcable stick in the pcb? (There is only the flatcable without a connector ;-)) Reconnect and power up mfc again. If it doesn't help please write again here.

Posted on Sep 13, 2007

  • 3 more comments 
  • Michal Knoller Jan 20, 2014

    That didn't help and now my error changed to "machine error AF" (I have the entire cover and disconnected) -

  • Michal Knoller Jan 20, 2014

    I'm considering taking off the entire body to check the whole path of the print head, but I did that last night and it didn't help

  • isagani Diaz
    isagani Diaz Jul 18, 2015

    I have the same problem "Init Unable AF".I tried to replace the whole scanner but the problem still there. Anybody who had found a solution, pls reply. Thanks

  • Hari Tharu
    Hari Tharu Nov 24, 2016

    Init Unable AF, I have same problem but the cable is true position

  • Hari Tharu
    Hari Tharu Nov 24, 2016

    Thank-you for help, your status is 100 % Right.My printers problems is solve.

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  • 2 Answers

I've broken the flat cable right at the connector on the main PCB. The behavior is exactly as described. I suggest others to look carefully at this cable when having this issue.

Now if I can only figure out how to repair/replace this cable???

Posted on Sep 10, 2017

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It helpd me thank you! I only just check the both ends of the flat cable and i found out one end of it has broken conductor then i cut a new one:)it works.

Posted on Nov 06, 2014

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  • Contributor
  • 38 Answers

I got that problem too but solve, i check the gear and belting.. there something missing like gear torn broke and some dirt or similar blocking its track.. you better check coz to its some kind of mechanical problem not software.. hope this solve the prob..

Posted on Jun 13, 2013

  • Michal Knoller Jan 20, 2014

    I opened the entire printer - the print head seems to slide and trigger the right side - how do I know if what i think is right actually is?

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I m sorry but i tries everything but it is still doing the same thing

Posted on Jan 23, 2008

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No it makes grinding noise with a beep sound then scan unable af is displayed

Posted on Nov 21, 2012

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Posted on Jan 02, 2017

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sure (this advice costs you some greetings from me to the beloved bahamas ;-))

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Open this cover which hides the flat cable of the scanner. The cable needs reconnecting to the main board. Simply stick it carefully into the right positon.

(will post a picture later)

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