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

1 Answer

5849cn error 4f

I get "unable to print". I am able to enter maintenance mode by holding menu while plugging in. That shows error 4F. How do I troubleshoot/clear these types of errors?

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  • kdavis_paras Sep 08, 2008

    brother mfc 5440cn error 4f, need help...

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  • 4,041 Answers

Hi there
Brother 4F



Access the internal maintenance mode by pressing the Menu/Set button, then press * 2 8 6 4 within 2 seconds. This should put you in the maintenance mode menu. Enter 80, then scroll down with the arrow down (round) key. You'll find an entry listed as purge count. If number is over 6000, enter 2 7 8 3.

This will reset the purge count value. Then the printer will restart, hopefully without the annoying cannot clean message.


All I ask is please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

All files on my website are only there for a limited time

Posted on Apr 25, 2010

  • osman perseh Nov 16, 2014

    After applying your suggestion its still failed to restart normaly

  • Dawn Amos
    Dawn Amos Mar 25, 2015

    fail :(

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This will reset the purge count value. Then the printer will restart, hopefully without the annoying cannot clean message.


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Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

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This will reset the purge count value. Then the printer will restart, hopefully without the annoying cannot clean message.


All I ask is please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.


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Hi there
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This will reset the purge count value. Then the printer will restart, hopefully without the annoying cannot clean message.


All I ask is please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

All files on my website are only there for a limited time

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