Question about Brother MFC-640CW All-In-One InkJet Printer

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B&W printing no longer works.

I believe that I've clogged the black print head by using cheap replacement ink. I've tried cleaning it several times with the printer's on-board method but it never works. From what I can tell, the print head is clogged.

Is there any way to clear this without having to buy a new print head? I would really appreciate any help.

I've gone into maintenance mode and checked for any error messages, but there are none.

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  • jg72 Feb 26, 2008

    Thanks - I will try this and report back!

  • jg72 Mar 04, 2008

    I've tried the clean and purge with no luck. I'm assuming that I have to replace the head. It appears that this will cost more than the price of a new printer... I'd love to fix this myself, but I can't justify the cost.

  • zuber1 Dec 20, 2008

    I also have this problem with my MFC 640CW.  We used cheap replacement ink and first we didn't have any yellow print, now we do not have any red ink coming out.  Can this be remedied by buying a OEM brother cartridge and purging the ink through to get it cleaned out?

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So, if you have achieved the maintenance mode, go back there and when entered press 7 then 6 then 4 then start bk-copy. Before that insert new original brother carts! machine will initiate the carts and do some power cleaning. when finished press 7 then 6 then 3 then start bk-copy. machine will do a power purge. leave maintenance mode by pressing 9 then 9 and -after machine comes up in a normal state- run a test print.

if you still cant see any bk blocks the head is definitly clogged and needs replacement.

NEVER use generic ink carts like easyjet, unink etc. because of wrong consistence of ink (only dye-ink with glycerol is allowed to use)

Posted on Feb 26, 2008

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