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

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Brother MFC 420CN Machine Error 7E

My Brother MFC 420CN is showing Machine Error 7E.
I replaced an ink cartridge the night prior and printed 1 page and made 1 copy, had no problems with that.....then when I got on the PC the next day....it showed Machine Error 7E. I have unplugged it let it sit a while and plugged back in, still same problem.
How do I fix this problem?
Can anyone PLEASE help??

Posted by on

  • sharrmc512 Oct 15, 2008

    I plugged in the faax machine to use it and i get this error Machine error7e.

    I can not fix it please help

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Mix-it-up
  • 832 Answers

SOURCE: Brother MFC-420cn

Change the black one. It could be that the cart is mal manufactured (valve wont open). Use another one and see if there is bk again. When no success after the 2. cleaning cycle try this: http://www.fixya.com/support/t202678-printer_head_cleaning If there is more trouble post here.

Posted on Sep 21, 2007

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  • 26 Answers

SOURCE: Brother MFC-420CN color ink empty but want to print/copy in B&W

brother won't print od do anything is one of the 4 inks are empty so first of all you have to replace whatever is empty, when you remove it it will ask you if you changed it and if it is a new one you will press 1 twice per cartridge, if you put compatible ink in you will clog the ink head up and then be stuffed

Posted on Dec 15, 2007

  • 286 Answers

SOURCE: Brother MFC-5440CN Printer Problem

If this only happens when you are copying.

1. Your scanner glass is dirty. Open the lid, use windex to clean the flatbed. Look on the left side. You should see a strip of glass, with the scanner sitting under it. This strip is used when the document feed is being used. Make sure it is clean. Most common problem is getting a little whiteout or the sticky residue from scotch tape on this glass, which causes lines down your copies.

Clean it with alcohol which will dissolve the sticky stuff and the whiteout.

If this does not solve the problem, the CCD scanner in your machine might be going bad.

Posted on Dec 30, 2007

  • 1 Answer

SOURCE: Want to print with black ink only using Brother MFC-420CN

I see it's been a while since you posted your question but in case anyone else is wondering about this, I'll answer.  The information is not in the User's Guide booklet but in the Software User's Guide which should be available on your software disk, or you can view it here http://welcome.solutions.brother.com/BSC/Public/files/dlf/doc000240/BH3_UsaEngSoft_C.pdf 

Basically, you go to the advanced tab under the printing preferences and select grayscale.  

Posted on Mar 27, 2009

pineworks
  • 4345 Answers

SOURCE: 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


Posted on Jan 30, 2010

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The ink is leaking out of the cartridge or ink leaked inside my machine.what should I do?

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Brother strongly recommends that customers do not use generic ink or refill their Brother ink cartridges. Using non-Brother supplies may affect the hardware performance, print quality and machine reliability since the ink formulation in genuine Brother ink cartridges prevent smearing and clogging of the print head. The Brother limited warranty does not apply to any problem that was caused by the use of unauthorizedthird party ink and/or cartridges.

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