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

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MFC-420cn printer says install cartridge. But there is a new one just installed.

I replaced all of the cartridges with new ones. The printer keeps telling me to install cyan. I have installed it many times, but still says "Install cyan". How do I get out of this problem?

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Re: MFC-420cn printer says install cartridge. But there...

By useing original brother carts instead of poor designed generic ones.

Or by answering the lcd-display question if you have changed the cart.

or by making sure that the plastic nose secures the cart which was placed well into the holder.

If that doesnt work, the circuit board might be defective.

Posted on Jan 10, 2008

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Black ink on my Brother MFC-420CN is faint and streaky

You said you replaced the cartridges. Were they Genuine Brothers' Cartridges?

My Brother MFC-240C, does not like Generic Printer Cartridges. That sounds like your problem. Also I had with Brother's was problem with Color. Color that should be Yellow, will turn out Green, or Blue Green, etc. The Generic Cartridges, also printed lines thru the words. That's what the Companies do., so they can keep selling the ink cartridges.

Some Printers, are able to use Generic, but you have to fill them up yourself and I heard, quite MESSY, or Take them to have them filled.

So I learned, thru trial and error, that you must use the ORIGINAL Genuine Cartridges for the PRINTERS.

This is the only advice I can give you. If you find this helpful, pls rate me.

Thanks and Good Luck :0)

Jan 03, 2010 | Brother MFC 420CN All-In-One InkJet...

1 Answer

I don't know how to change the ink bought this printer from a guy at work no manual

Lift the scanner cover from the right-hand side of the MFC until
it locks securely into the open position.

If one or more ink cartridges are empty, for example Black, the
LCD shows Ink Empty Black and Cover is Open.

Pull the ink cartridge hook toward you and remove the ink
cartridge for the color shown on the LCD.

Open the new ink cartridge bag for the color shown on the LCD,
and then take out the ink cartridge.

Remove the cartridge covers.

Each color has its own correct position. Keep the ink cartridge
in an upright position when you insert it into slot. Press down on
the ink cartridge until the hook snaps over it.

Lift the scanner cover to release the lock. Gently push the
scanner cover support down and close the scanner cover.

If you replaced an ink cartridge while Near Empty was
displayed on the LCD, the LCD may ask you to verify that it was
a brand new one. Example: Did You Change Blck? 1.Yes
2.No. For each new cartridge you installed, press 1 on the dial
pad to automatically reset the ink dot counter for that color. If the
ink cartridge you installed is not a brand new one, please be
sure to select 2.

If you wait until Ink Empty message is displayed on the LCD,
the MFC will automatically reset the ink dot counter.

If the Install message is on the display after you have
installed ink cartridges, check that the ink cartridges are
installed properly.

Hope that helps you!

Aug 12, 2009 | Brother MFC 420CN All-In-One InkJet...

1 Answer

How do I install a new ink cartridge in my brother mfc-420? Thnks

The printer gave me instuctions itself. I just wasnt patient enough. Glad to know you are there when I need help again.

Dec 15, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer


When inserting a new cartridge, you may receive a prompt

"The installed ink cartridge differs from the original ink cartridge for the printer. Your printouts may be different from those printed using original ink cartridges. Do you want to continue using the currently installed ink cartridge?"

If you click Yes, printing will continue. If you select No, you will be prompted to change the cartridge. Manufacturer prompts may vary.

Nov 21, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Not recognizing cartridge

myprinter tells me"noblack ink," they are both b it is brand new cartridge why?this is the second black ink cartridge i have bought it says the same thing.i always buy "BROTHER"

Oct 27, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer

"no cartridge" message

I'm having the same problem....let me know if ya find a solution

Sep 10, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Brother 420CN

switch off the printer..... remove the cartridges... gently clean the sensor area. re -fix the cartridges and switch on......

dont forget to rate this post.....

Aug 21, 2008 | Brother MFC 420CN All-In-One InkJet...

3 Answers

Brother MFC-420CN Multifunction Printer Problem

power off, remove all carts, power on, reinsert carts, say yes to questions

fails then replace cyan or ink well is covered in ink

Jan 10, 2008 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Cannot print

It seems that another cart is empty. Check all cartridges when printer is off. And yes, you do need the color ones to print in bk.

Sep 24, 2007 | Brother MFC 420CN All-In-One InkJet...

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