Question about Brother MFC 420CN All-In-One InkJet Printer

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Printer message: Unable to Print

My printer Brother MFC-420CN keeps showing the message, "Unable to Print," after it completes the start-up cycle. I'm able to use the Scan and Copy functions from the printer, and have whatever I scan or copy from this printer, printed out immediately on another printer connected to my computer. But I still can not print anything on my MFC-420CN. I went online and found a free service manual for the model MFC58 and learned how to put the printer on maintenance mode. I was able to get an error code, but since the manual is for the model MFC580 I was not able to learn the meaning of the code. The error code is 5A. Please any assistance with this matter will be greatly appreciated. Thank you.

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  • ken patel Dec 18, 2007

    i have brother mfc-440 cn printer and say unable to print 30 so please direck me to sole problem

  • Fritz Stoppelbein
    Fritz Stoppelbein Mar 15, 2008

    mfc 420CN will not print local or network

  • Anonymous May 11, 2008

    unable to print 5A

  • frd02maz Jun 07, 2008

    Error message "unable to print" is displayed, run through the recommended Brother maintenance, still not working. Any suggestions.

  • Anonymous Mar 16, 2014

    I can't do anything with the printer. It won't copy or print



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5A means that the purge cam stopps abnormally when it is in use. This could be of a broken cam shaft. You have to replace the whole purge unit. This is a service job to do!

Posted on Sep 10, 2007


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5A means paper jam or some sensor error, but the common proble of unable to print 5A is mechanical they did not fuction to cleaning because of mechanical error, replace the mechanical then clean the sensor under the mechanical.

Posted on Oct 22, 2014

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My brother MFC 6490 CW message " Unable to print 50"

Posted on May 24, 2012

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Posted on Jan 02, 2017

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SOURCE: Printer message: Unable to Print

5A: encoder disc or encoder strip or main circuit board or printhead circuit board or power supply defective!

Sorry, cant be fixed by yourself!

Posted on Feb 20, 2008

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Brother MFC-420CN keeps showing Unable to Print w full ink

I often have the same problem - The inks being put into the printer are seated very sensitively. The lever holding them in may be also acting as a pressure sensitive switch because when I wiggle it a little, the printer usually starts working again! Make sure the cartridges are pressed STRAIGHT DOWN, wiggle them and wiggle the plastic pressure lever. (I do not know what else to call it!) and I hope yours works again. It is a great little printer, but this is really annoying! Good luck!
BTW, if your inks are RE-FILLED, that may be your problem. It seems they are made to NOT be refilled. To avoid this problem, do not wait till they are empty to refill them. Check them monthly (depends on usage) and when they get 1/2 way, refill then. Do NOT put the hypodermic refilling tube in deeper than necessary to refill. I use a heated nail to make my hole in the plastic, going ONLY in as far as necessary to make the hole, and then I cover it with scotch tape. Then I wash off my hands with Lava soap! (Haven't mastered the knack of not getting the ink on myself, yet!)

Apr 25, 2010 | Brother MFC 420CN All-In-One InkJet...

2 Answers

I have a brother mfc-420cn. I am getting a unable to clean messa

Do you mean "unable to clean"?If it this follow this instruction.
Unplug the printer from power cord.Press and hold the "menu" button, then plug the device.You'll see on the LCD screen a "machine error" code.If this code is 40,41 or 4F the print head is defective.If the error is 50 or 51 there is error in Purge unit and printer require service.If the error is 46 the waste ink tank is full.Follow this:Enter 80, then scroll down with the arrow down (round) key. You'll find an entry listed as purge count. If numberis over 6000, enter 2 7 8 3.This will reset the purge count value. Then restart the printer, hopefully without the annoying cannot clean message.

Nov 02, 2009 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Error message on my mfc 420 mc

this has been written many times here in the forum.

plz search forum "unable to print"

Jun 22, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Printer message: Unable to Print

5A: encoder disc or encoder strip or main circuit board or printhead circuit board or power supply defective!

Sorry, cant be fixed by yourself!

Feb 20, 2008 | Brother MFC-440CN InkJet Printer

5 Answers

Brother mfc-215c unable to clean?

I have the same problem my printer (a MFC-215C) is unable to clean and when I press Menu/set I do not have "Black print"? So what do I do now?????? HELP... Thanks Nathalie

Nov 09, 2007 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Error message

does it say an error after "unable to print",what lights? are all inks good?, is there any bits of torn paper inside where head and carriage side up and down?



Oct 20, 2007 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Error message unable to print

Send it back. The printhead voltage is innnnn disorder. Netxt will be Error 41 (Every Error starting with 4 means probs with printhead and in 99,9% the head has to be changed and cant be fixed!)

Sep 20, 2007 | Brother MFC 420CN All-In-One InkJet...

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