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

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Oh Brother Dear Sir I have a problem with my brother 5840cn with the cleaning service.a message saying that printer is busy how dose one clear this problem.

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Press Stop/Exit.

Posted on Sep 06, 2007

  • Robert Hall Sep 06, 2007

    if pressing Stop/Exit does not work try this

    Error message
    Unable to Change
    Unable to Clean
    Unable to Init
    Unable to Print
    Unable to Scan

    The MFC has a mechanical problem.
    A foreign obstacle, such as a clip or ripped paper, is in the MFC.


    Open the scanner cover and remove any foreign obstacles from inside the MFC. If the error message continues, please follow the steps below before disconnecting the MFC so you will not lose any important messages. Then, disconnect the MFC from the power source for several minutes (which will erase all faxes), and then reconnect it.
    Check whether the MFC has faxes in the memory
    1. Press Menu/Set, 9, 0, 1.
    2. If the MFC has no faxes, disconnect the MFC from the power source for several minutes and then reconnect it.
    If faxes are present, you can transfer them to another fax machine. Go to Step 3.
    You can forward the faxes to your PC. Please see Transfer faxes to your PC.
    Transfer faxes to another fax machine If you have not set up your Station ID, you cannot enter fax transfer mode. 3. Enter the fax number to which faxes will be forwarded.
    4. Press Black Start.
    5. After the faxes are transferred, disconnect the MFC from the power source for several minutes and then reconnect it.
    You can transfer the Fax Journal report to another fax machine by pressing Menu/Set,

    9, 0, 2 in Step 1
    Transfer faxes to your PC
    You can move the faxes from your MFC?s memory to your PC.
    1. Press Menu/Set, 2, 5, 1.
    2. Using ▲ or ▼, select PC Fax Receive, and then press Menu/Set. The LCD will ask if you want to transfer a fax to your PC.
    3. To transfer all faxes to your PC, press 1.
    To keep all faxes in the MFC?s memory, press 2.

    4. After the faxes are transferred, disconnect the MFC from the power source for several minutes and then reconnect it.



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My brother 5840CN. lit says unable to print. the manual says to take the jam out - there was no jam. Turn it off, then on. i did that. It still says unable to print, look at troubleshooting page

errr.....No, no it does not. The Manual says that "unable to clean" means one of two things.....
1. The MFC has a mechanical problem.-OR-2. A foreign obstacle, such as a clip or ripped paper, is in the MFC.
but regardless, I don't believe it *IS* a 'cleaning' problem per se.Try resetting the power purge counter.

Press menu > Mono Start > 4x Arrow up after another. All lights will flash.
1. Power clean - Press 7>6>4 >Mono? Start.
2. Power Purge: 7>6 >3 >Mono Start.
Press 9>9 to exit maintenance mode. Run a print quality test print.


Sep 16, 2012 | Brother MFC-5840CN All-In-One InkJet...

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My printer Brother MFC-5840CN reads Unable to Clean What can I do

Welcome to Fixya

You need to clear the ink waste counter and clear the purge counter. Please see procedure below:

- pull out the AC plug
- put back the AC plug while holding down the "menu" button and keep holding it (15 sec)
- now you are entering the MAINTENANCE mode and "error 46" pops up in the display
- select 8 by using the arrow buttons ,push OK and select 0 and push OK
- 00:00 OK (the display is showing this message)
- now push the START button 25 times until you see PURGE: xxxxx
- Press 2783
- the purge counter indicates now: purge: 00000
- switch off the printer ,switch it on

Thank you for using Fixya!

Apr 20, 2011 | Brother MFC-5840CN All-In-One InkJet...

1 Answer

Brother MFC-5840CN Will not print and message say's, "Unable to clean. See chapter in user guide". I don't see anything that can fix this problem. I have been successful in the past with turning it off and...

Inside the machine is a large plastic box packed with felt pads. The machine cleans its printheads by squirting ink through all the nozzles to blast them clear, then pumps that used ink into the Ink Absorber Box. When it calculates the the box is getting full, it puts up the message you reported. The box (Brother part number LF4818001) is a fairly cheap part, but getting to it is kind of complicated. Instructions for the nearly-identical model 5440 are here. Two other options worth considering are finding a local servicer on brother's website, or replacing the machine.

Feb 08, 2010 | Brother MFC-5840CN All-In-One InkJet...

1 Answer

I have a brother 5840cn all in one printer, it says unable to clean, how do I fix. Mary

If you look at the Brother you will find a trouble shooting guide for your machine.

In the guide, for the error you quote Brothers guidance is to check for a stuck piece paper, however it also states that if the print head is hard over to one side (righthand side if memory serves me correct), then to contact Brother. If you do so, Brother will tell you it needs to be serviced by a Brother agent, which will likely cost you more than a new one !

If it isnt a stuck peice of paper, the problem is due to the fact that Brother machines excessively self-clean. Each time they self-clean a small amount of ink is dumped in to a holding tank/sponge. When a predefined number of self-clean operations have been performed, the machine refuses to print and gives the error message you have stated. Brother state that the tank/sponge must be replaced before the counter is reset.

However, there is a way of reseting the self-clean counter yourself - if you Google your model number and the error code soemwhere in the results you'll find how to do it. The only risk of doing this without changing the tank/sponge is that it will eventually overflow and leak out the bottom, but I did my Brother all in one some time ago and have had no problems yet.

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If you go to this page you can download the user manual right from the Brother website:

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I saw on this site codes for another MFC to clear memory and reset the cleaning unit count code to zero. It worked on two of my brother mfc 820cw units. The third mfc 5840cn had unable to print error message 46- nothing at Brother. they want you to take everything to a repair shop.they don't help at all. Then the error went to 4F when I tried toclear the memory.As Iunderstand that message- it means I have to replace the printer head. Have no clue where or what it is. But I can read a manual as well as anyone and follow directions to fix it! Can't be worse than it is now! Good luck

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