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

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Error : Unable to clean

Brother MFC-5840CN Error : Unable to clean Please help me solve this error. the service manual didn't teach me how to reset the printer. Thank you.

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Unable to clean means that the waste-ink "sponge" is full. If you've already checked for small paper part (which is very unlikely to cause this error message), the error is mechanical. Unfortunately, that's not something us users can change, but the machine would require to be sent to service. So if your machine is not within warranty, I'd doubt it'll be worth the service cost.

Posted on Jun 02, 2009

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When trying to use your Brother machine you get the message "Unable to _____". The blank may be the word Change, Print, Scan or Clean and these words may vary from model to model.
This message is a general message and will appear for different reasons. It often indicates a paper jam or a mechanical issue. Complete the following to determine the possible issue.
Check for foreign objects, such as a clip or ripped paper, inside the machine.
Open the scanner cover by pulling up on the lower right corner of the cover. Look inside the machine and remove any foreign objects. If you see jammed paper or another item inside this area, gently pull it out and then close the scanner cover securely.
Then with the power on, pull the plug from the wall for several minutes. The plug it in and power the unit up.
hope this helps.. thank you have a nice day good luck

Posted on Jun 02, 2009

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Posted on Jan 02, 2017

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1 Answer

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.
http://www.brotherprinterrepair.com/cleaning-a-brother-mfc-420cn-printer-head/


Tallon41

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

1 Answer

I have a Brother MFC-9840 that comes up with Print Unable 21. I have cleaned as set out in maintenance to no avail. Please help. Thank-you


The MFC-9840 manual says that this code is reporting a mechanical error.
Try to reset your machine in maintenance mode:
menu * 2 8 6 4 (within 2 seconds)
91 and then 99 to exit service mode.

User manual:
http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_MFC_9840CDW_EN_2378.PDF


Brother's suggestion:

Turn off the machine's power switch and then

turn it on again. If the error message continues

leave the machine for several minutes and then
try to print, copy or scan again


Good luck.....

Click on this link or copy and paste the complete link into your browser.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response.

Thanks, Joe

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1 Answer

Print function stopped working. Brother MFC 5840CN


First things first:

press menu then start bk-copy then fourtimes arrow-up button. machine will display an error code no. plz post AS A NEW POST again.

BTW: The update has nothing to do with the stopping of the machine!

Jan 10, 2008 | Brother MFC-5840CN All-In-One InkJet...

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