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

2 Answers

I admit it, I used cheapo refill ink! Now the black section of the print head doesn't work...

I admit it, I used cheapo refill ink! Now the black section of the print head doesn't work. I took the printer apart and flushed the black tube and return line with alcohol, then installed new BROTHER black ink cartridge, but still almost no black gets through: when I do image quality test print it manages to print 2 or 3 of the 24 or so dots that show up on the color squares. Can you tell me how to rescue this print head, or where I can buy a replacement?

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  • Anonymous Jan 13, 2008

    Thanks for your advice. I see what you mean about hard to replace, but I've already been there: I'm a copier technician, so the mechanical proceedure is within my ability, but could you tell me more about the "you must program in the head id and run a purge" proceedure you mentioned?



    Many thanks,

    RB

  • Anonymous Jan 20, 2008

    Sending this post again, not sure it went through:

    Thanks for your help. I've taken it apart again and think I've cleared most of the print head blockage, but now I get message:

    "unable to init. 4F". Can you tell me what that refers to? Here's my email...



    Thanks,

    [email protected]

  • Anonymous Mar 18, 2014

    I already cleaned the black print head 5 times. Quality improved, but not well yet. I have ink in the black cartridge. May be ink is dried. Is it possible?
    Yevgeniy

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2 Answers

Hey, that's terrific! Ah, well, thanks for your advice. I guess I'll be buying a new printer very soon. Shopping around, it looks like most brands use the same disposable printer setup. Can you suggest any inkjet MFPs that have replaceable print heads in case I make the same foolish mistake again?

Thanks Again
RB

Posted on Jan 26, 2008

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  • Brother Master
  • 1,113 Answers

I'm afraid there is no real sucessful way of cleaning these print heads, tiny micro filters built into the head unit will blocked. I have never unblocked one fully.

Fix is to replace head

These heads are not easy to fit, then once they are you must program in the head id and run a purge with four gen inks, this purge uses like 1/4 of each ink.

Recommennd you replace printer it is cheaper to


LINK to UNRECOMENDED removal of head

I dont have the 420 cn listed but here is link to mfc425cn head info so you can see how much they are not worth buying


below is pic of head

I admit it, I used cheapo refill ink!  Now the bla - 2d7dc76.jpg .

Posted on Jan 13, 2008

  • 2 more comments 
  • Soulvisitor
    Soulvisitor Jan 13, 2008

    more info on wasting time fixing a brother printhead

  • Soulvisitor
    Soulvisitor Jan 13, 2008

    It too much info to repeat, post email address I might send you a present.



    Menu * 2 8 6 4 rapidly gets into maintence mode then 76 is purge, then 4 for inital and choose all or something like that



    Head info is put into eprom so electronics knows what to do with head I use specialised software but can be done via control panel but once again why waste time with it

  • Soulvisitor
    Soulvisitor Jan 21, 2008

    Great work but now you have killed the head, here is info from service manual

  • Soulvisitor
    Soulvisitor Jan 21, 2008

    missing bit is replace head, main board or head supply pcb

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xamazedx_0.jpg
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Unable o clean


HTML clipboardHi If your brother printer has been left unused for some time it is probably clogged? And the inbuilt cleaning facility does not help then you will probably need to buy a Magic Inkjet Flush Print Head Cleaning Kit.

Which you can find on Ebay.
http://tinyurl.com/yfx2y5k
Although it is possible to take the Brother printers apart, it is too difficult for most people.
To view what´s inside a Brother Printer click on next line...
Click again to enlarge photo.
http://magicinkjetflush.com/images/Unclog_Refill_Brother_Printers.jpg
Therefore, what we suggest is to make cleaning cartridges using the Dr.EpSUN Refill Tool...
Then use them to flush the print head (usually at the end of long tubes near to the back of the Brother printer)
*NEVER TOUCH THE WHITE star shaped PIN... under ink cartridges... because once pessed in... it cannot be used !
Also in most cases a single cleaning cartridge for black and 1 for colour is all you will need.
If you only have FULL INKS and need to make a cleaning cartridge use Dr.EpSUN Refill Tool to empty ink cart...
Save the ink in a clean glass jar or similar make cleaning cartridge then once unclogged simply use Dr.EpSUN Refill Tool
to refill with your saved ink.

How to make Brother Cleaning Cartridges
If you wish to see photos? You can also follow the procedure for Epson C80 in the Magic Inkjet Flush Manual.

Using FREE Dr.EpSUN Refill Tool.
To refill Brother inks... or if printer has been left unused and you need to unclog print head? (To make a cleaning cartridges *Fill empties with Magic Inkjet Flush instead of Ink / Then print rectangles using Magic Inkjet to FLUSH print heads once prints appear without white lines simply replace with inks and continue printing rectangles untill all Magic has been flushed out of print head.)

How to refill Empties...
1. Secure empty Brother ink cartridge UPSIDE DOWN in a vice or similar.
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http://magicinkjetflush.com/Ebay/Print_Test_Black.jpg
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Once prints appear to be normal simply replace the Magic Inkjet Flush with ink cartridges and continue printing rectangles untill flushed.

Hope it helps. If you need any further help Click Here then choose "Ask a Question"

Thanks

John P Bradley Tinteiros (Ebay)

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