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

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Error message on my Brother MFC-420CN

The error message I am getting is "Unable to Change"

I have preformed all of the suggestions in the users manual. I was just wondering if there were other maintenance mode things that I could try before I go shopping for another printer.

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Re: error message on my Brother MFC-420CN

Press menu then start bk copy then fourtimes arrow-up button. Machine will switch to maintaenance mode. You may have to press start bk-copy. The machine will display an error code.

Error code starting with 4 is always a defective print head which needs replacing (except error 46: new waist ink tank needed).

In case it is another error code plz post here again.

Posted on Jan 28, 2008

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How to troubleshoot a brother mfc 420cn printer w/o a manual?

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Brother MFC-420cn Message appears,

Hi you can try this is for your error and please call back and let us know if it worked for you so others can do the same.Solution:
  • Machine off
  • Switch on the machine while holding down the “menu”button until all the leds are flashing on/off. Now you are in “maintenance” mode.
  • Press 80
  • Press the “mono start” button several times until you see “purge: xxxx”
  • Press “2783” in order to reset the purge counter. You will see: “purge:0000”
  • Press the "stop" button.
  • Press “99” to exit the maintenance mode.
All the Best: Pineworks

Jan 30, 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...

1 Answer

Brother MFC-665 CW with "unable to print 4F" error

My MFC 665CW popped this same "Unable To Print 4F" error recently making the machine fully useless. Just an annoying triple beep and repeat error message to screen when trying to do anything at all with it. I wrote Brother about it. They said to check all through the machine (with a light) for any paper torn off inside, or unwanted foreign objects. This is a good step to do anyway to help maintain the printer. If that is not it, they said it would be a mechanical malfunction. I tried "resetting" by unplugging it for a while as they suggested to no avail. Also while I did find a bit of paper torn off down in my MFC 665 removing it had no effect.

Jul 10, 2009 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Error Message: Unable to Clean

Machine error 46 ("Unable to Clean") indicates the wasteink "sponge" as full, which disables the machine's ability to clean. To fix this, you could get the needed part from a Brother parts dealer and enter the servicemode to reset the counters. However, the more reasonable thing to do would be to just change to another machine. You could also have the machine sent to service, but that most likely would not be worth the trouble. The error is pretty common on old Brother inkjets, so it'll come back eventually even if you replace the part. Newer machines should not have this problem.

Jun 03, 2009 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Brother mfc-420cn

this is two ways for screen this error: 1. mechanical problems 2. absorber counter full If you don't hear ubnormal sounds from your printer, you must clear counter for absorber.

Oct 15, 2008 | 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

Unable to Clean - What are the solutions?

plz search this forum for unable to cklean or error 46. ithas been described soooo many times.. :)

Apr 09, 2008 | Brother MFC 420CN All-In-One InkJet...

3 Answers

Printer message: Unable to Print

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!

Aug 27, 2007 | Brother MFC 420CN All-In-One InkJet...

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