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

1 Answer

Print and copy comes out blank paper - MFC-420CN All in one

Hello Mix-it-up (Guru):
I followed your instructions and I list below the error codes:
2:84, 3:A1, 4:84, 5:A1, 6:83, 7:A3, 8:A1, 9:39
Thank you in advance

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 832 Answers
Re: Print and copy comes out blank paper - MFC-420CN All...


I guess your machine has a serious problem with the purge unit.
Its indicated thru error 39. (the other ones are quite normal: A! menas Cover open (when replacing carts) and the 8x are related to paper feeder (running without paper/paper jam))

Have a look on the encoder disc which is positioned on one of the big white gear wheels on left hand side. Is it stained or broken/scratched? Do you hear scratching noises when machine is powered up?

Anyway its worth a look. But it could be that the print head has dryed out/clogged though it wasnt cleaned for a while.

If you cant get the error clear the only way to fix the machine is to replace the whole print unit including ph and cart holder (incl. tubes). This is quite simple to do because you can simply unplug the connectors on the main circuit (left hand side red/black cable), loose one screw which is within the metal (position near power inlet, can be seen from above), unfasten the cart holder connector to main board. Unfasten the two white flat cable of the ph.

The whole spare part can be used from a dcp 110c/dcp 115c which you can buy as a 2.hand one at eBay. HAve a look for a dcp with broken scanner glass ;-)

Posted on Dec 08, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I have a Brother MFC-295cn. I first ran out of blue ink. I replaced it and it was working fine. Then it started printing out blank paper. it goes through the motions but paper comes out blank. Anyone...

Inkjet printers need to be used frequently to prevent ink drying out and blocking the print head nozzles.
If the print head cleaning maintenance routine does not clear the blockages, then print head needs replacing, but it may be expensive.
It may be more cost effective to buy a later model and better printer than replace the print head.

Nov 17, 2012 | Brother MFC 420CN All-In-One InkJet...

1 Answer

When i try to print it works right but when its done the paper is blank


Are you facing this trouble from one particular program when you print ? Try Notepad to print and check. If it does not print. Follow the steps below.

I think it could either be Alignment ( Ink Initialization ) Issue or Driver issue.

My Suggestion is to Remove the Toner's and clean and re-insert. If this does not help, Reinstall the drivers for the printer and it should work fine.


May 16, 2012 | 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...

3 Answers

MFC-420CN error "Unable to Clean"

Unable to clean comes up as well when the ink absorber is full. It won't let you print or
clean until a fresh absorber is installed, as it could leak all over inside and out. A shop has to do the repair.

Jul 10, 2009 | 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

1 Answer

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.

Jan 28, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Print and copy comes out blank paper


please press menu then start black copy (blue button) then fortimes arrow-up (tel.index). machine will switch to maintenance mode and all buttons will flash. press 8 then zero then severaltimes start black copy until error A1
will appear on the lcd. repeat pressing menu nine times and write down the error codes. Plz post them here again.
To leave the mode press stop then 9 then 9.

Dec 06, 2007 | Brother MFC 420CN All-In-One InkJet...

2 Answers


Please tell us what machine do you really have:
Is it a mfc 420cn or a mfc 5460cn?

Did you have a paperjam before getting the error?
This might be due to the paperjam.

Ill try to give you some more help but need more info...

Oct 25, 2007 | 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...

Not finding what you are looking for?
Brother MFC 420CN All-In-One InkJet Printer Logo

247 people viewed this question

Ask a Question

Usually answered in minutes!

Top Brother Printers & Copiers Experts

Jim Yeh

Level 1 Expert

15 Answers

Jesus  Colon
Jesus Colon

Level 1 Expert

12 Answers

Rick Johnson
Rick Johnson

Level 2 Expert

84 Answers

Are you a Brother Printer and Copier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides