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How I solved Brother 420CN "No Cartridge" Error

My Brother 420CN printer said Low Ink or No Ink on some cartridges and I tried just pulling them out and putting them back in since they all still had at least 1/2 a tank of ink.

After closing the cover, the LCD showed No Cartridge instead of asking me which carts were replaced. I couldn't get rid of the message except by unplugging the printer but then it went back to the No/Low errors.

The solution is to:

  1. Unplug printer
  2. Open and remove all carts
  3. Plug in with cover still open
  4. Look at the LCD messages and install the carts in the order it asks*
  5. Close cover and say you replaced the carts it was complaining about
  6. If it says Please Wait for a long time, just Unplug and Replug

* When you insert the cart it wants, if it is happy, the display will ask you to install the next color. If it does not change, you have to either replace the cartridge or cover up the ink sensor area of the cart with about an inch of black electrical tape. The area to cover is the end of the cartridge that has the 2 vertical indentations (when installed into the printer, it is the end on the right). I tried covering the center but that didn't work. I then tried the left indentation (edge facing me) and that worked. You have to sort of stuff the tape into the indentation.

Print | posted on Saturday, September 15, 2007 12:00 AM | Filed Under [ Personal ]

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# re: How I solved Brother 420CN "No Cartridge" Error

I put black electrical tape on the left hand side of my MFC-J870DW and it worked. Thanks for your suggestion.
6/16/2014 6:03 AM | Averil
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# re: How I solved Brother 420CN "No Cartridge" Error

Thanks for that got rid of "no black ink cartridge"
3/10/2015 4:11 PM | Graham
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# re: How I solved Brother 420CN "No Cartridge" Error

Wow! Thank you!! I can't finally put those experiences of frustration behind me. I didn't have any electrical tape, so I used green masking tape. I ended up wrapping tape around the whole cartridge, and that finally did the trick
8/26/2015 11:24 AM | Sara
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# re: How I solved Brother 420CN "No Cartridge" Error

Finally, something worked. Thanks for the suggestion.
2/14/2016 1:46 PM | Karen
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# re: How I solved Brother 420CN "No Cartridge" Error

Wow, the tape thing worked for me too. I used a piece of black tape and used a letter opener to push it into both indentations. Thanks Gary!
3/4/2016 5:25 PM | Mike
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# re: How I solved Brother 420CN "No Cartridge" Error

1/11/2017 worked - black tape
1/11/2017 1:59 PM | Ann

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