Question about Brother MFC-7420 Laser Printer

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Toner replacement on Brothers MFC 7420

Can't get old toner cartridge out of Brothers MFC 7420 to replace it.

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  • pjred11 Jan 16, 2009

    I got some documentation online & figured it out from that. Thanks much for caring.



    Paul



    You are right. It goes in from the front. I thought it went in from the back.

  • John Tuminaro
    John Tuminaro May 11, 2010

    Does the front door open or no?

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  • 133 Answers

Open the front cover and try to pull it out strongly.
then use the duster to clean the machine.
then you should able to replace your cartridge easily next time.
mightbe too dirty or you use ODM toner? if yes that's the problem issued from.

Posted on May 22, 2009

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The machine says Tuner ended replace toner cartridge.


Replace the toner cartridge...and verify the toner cartridge is installed correctly............

Sep 14, 2012 | Brother MFC 7420 All-In-One Laser Printer

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How do you remove the toner cartridge from brothers model mfc-7420?


I would suggest downloading a copy of the user manual for your printer -it gives step-by-step instructions as well as detailed pictures to follow to remove the toner cartridge from the drum


Here is the link for the user manual for the Brother MFC-7420 All-In-One Laser Printer: 

http://welcome.solutions.brother.com/BSC/public/files/dlf/doc000387/ALLFB_UsaEngUsr_B.pdf

This is a .pdf file-You will need Adobe Reader to read the manual.

Once you have downloaded a copy of the manual to your pc, Go to Section 11-25 (p. 112) and 11-26 (p. 113)  Here you will find detailed step-by-step instructions and illustrations on how to remove the toner cartridge from the drum.

Apr 19, 2011 | Brother MFC 7420 All-In-One Laser Printer

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Brother MFC-7420 just started printing a shadow image


Sounds like a bad drum cartridge. Pull the toner/drum cartridge out of the machine and set it down. Press down on a (blue?) tab to release the toner cartridge, and you can lift the toner cartridge out of the drum cartridge. There is a cleaning blade in there - a soft plastic blade that rides against the drum and scrapes off toner that didn't get transferred to the paper. If it gets stuck off the drum surface, images repeat a few inches (one drum circumference) down the page.

A new DR-350 drum unit should fix it. have the machine's power on when replacing it. While the door is open, touch the CLEAR key. The display will read "REPLACE DRUM?" or something like that. Press 1 for Yes.

Jan 05, 2010 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Brothers MFC 7420 It says Toner Life End on my LDC and I still get great copys. I have had this issue before and I think this machine is programed to have me purchase toner before I need to.


The MFC7420 has sensors that sense when the toner is low. It lets you know in time to purchase another cartridge before you totally run out. If you can get one same day I wouldn't purchase one until the printer pages start fading.

Oct 08, 2009 | Brother MFC 7420 All-In-One Laser Printer

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Everything is printing black n dirty


Most likely cause is a bad toner cartridge. It's likely dumping excessive toner inside the printer. try taking the toner out and hold it sideways and tap it, if toner falls out then your cartridge is defective. try vacuuming the printer and wipe it clean with a dry cloth and and replace the toner with a new one.

Oct 05, 2009 | Brother MFC 7420 All-In-One Laser Printer

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I REPLACE THE TONER CARTRIDGE BUT ON LCD IT DISPLAY MESSAGE TONER LIFE END,OPEN FRONT COVER AND REPLACE TONER CARTRIDGE


Is this a genuine Brother replacement cartridge, if not you may find that it is not recognised by your MFC. Also worth a try is removing and reinstalling the new cartridge ensuring all protective packaging is removed. Also remove and reinstall the Drum unit as Brother actually recommend this as part of a new toner install

http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_MFC_7420_7820N_EN_1156.PDF

Sep 26, 2009 | Brother MFC 7420 All-In-One Laser Printer

5 Answers

Refill toner Brother MFC 7420


open front cover, press OPTION button, on the LCD will appear a message "NEW DRUM?" ....DO NOT RESPOND....just type on the keyboard "*00" and there will appear a message "Accepted" and use it in your pleasure.

PS. in any case i blocked with paper labels the viewing windows from transparent plastic on the toner itself....

Mr. Brother, do not try to be smarter than your customer

May 22, 2008 | Brother MFC 7420 All-In-One Laser Printer

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