Question about Brother MFC-7820N Laser Printer

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Brother mfc 7820n toner cartridge issue

I installed a new toner cartridge and it says" no cartridge" re-install. so I did. Does not see the new cartridge - I out the old one back in and it sees it just fine. It is the same brand cartridge - I even bought a different brand and that says the same thing. please if you have any suggestions I would appreciate it
thank you
rosa smith

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Re: brother mfc 7820n toner cartridge issue

Look at the left side of the cartridge next to the blue release button. There should be a white tab in an arc slot. If the white tab is anywhere but all the way to the right, it does not recognize the cartridge. Try truning the drum and pushing the white tab down to the right, it shoudl reset it and find the cartridge.

Posted on Oct 24, 2008

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Brother MFC 7820N, I am getting "Toner End Life"

I fail to see why you are covering up the toner sensor led's when you have a new cartridge fitted?
Also if you are using a recycled toner from a very well known uk shop that refills toners and ink then you may well have broken the drive gear that stirs the toner. i have seen this six times and their toners do this.
It could well be one of the pitfuls of recycled toners.

Jul 24, 2011 | Brother MFC-7820N All-In-One Laser Printer

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Brother MFC 7820N Toner life end with new toner

I found the following post on another site. It appears to work. If you want to reset your Brother MFC 7820N machine so you no longer have the error message: Toner End of Life, do the following:

1. Open the front cover of the 7820N, that is, the cover that allows you to pull out the toner and drum, but don't pull out the drum/toner.
2. Push the button: Options (located on the left of the control pad).
3. Type: *00 on the keypad.

The Brother MFC 7820N should be reset and the Toner End of Life message should disappear. WARNING: This may void your warranty and ultimately damage your machine if you are reusing or refilling your cartridges, but you should already know that. Hope this helps.

Sep 07, 2010 | Brother MFC-7820N Printer

1 Answer

Brother MFC 7820N Printed paper has toner ink layered on paper

you can remove the toner and drum from the machine, slide the tab back and forth about 20 times then blow in the slot. when you put it back in the machine if the problem keeps happening it would be a problem with the toner cartridge and it would need to be replaced

the reason this happens to toner cartridges is because the rubber roller tarts to wear out.

Mar 05, 2010 | Brother MFC-7820N All-In-One Laser Printer

1 Answer

I have a 7820N. I put in a new drum in January and have printed a few hundred pages. Put in a new toner cartridge after i started getting lines and streaks on the paper. They come and go but are getting...

Hi There,

When you installed your new drum did you reset the drum by.

1 - Opening the front cover.
2 - Press the options button up on the panel.
3 - Press 1 to reset
4 - Close the front cover done.

If the issue persists after resetting your drum contact brother technical support you may have a defective drum unit.



Mar 03, 2010 | Brother MFC-7820N All-In-One Laser Printer

1 Answer


you take the toner and drum assembly out of the printer, set it on a level surface, press the blue lever on the left side rear, and lift and remove the toner. Remove any packing material from the new cartridge, set the front toward the drum in first and lower the rear down until the blue lever clicks. Re-install the assembly into the printer...good to go!

Sep 15, 2009 | Brother MFC-7820N Printer

1 Answer

How do I add toner to machine? Also, is this copier do color copies?

1 Open the front cover and pull out the
drum unit and toner cartridge assembly.

2 Hold down the lock lever on the left and
pull the toner cartridge out of the drum

3 Unpack the new toner cartridge. Place
the used toner cartridge into the
aluminum bag and discard it according
to local regulations.

4 Gently rock the toner cartridge from side
to side five or six times to distribute the
toner evenly inside the cartridge.

5 Remove the protective cover.

6 Insert the new toner cartridge in the
drum unit until it clicks into place. If you
put it in properly, the lock lever will lift

7 Clean the primary corona wire inside the
drum unit by gently sliding the blue tab
from right to left several times. Return
the blue tab to the Home position (▼)
before reinstalling the drum unit and
toner cartridge assembly.

8 Install the drum unit and toner cartridge
assembly in the MFC.
9 Close the front cover.

If you need illustration for this, click on the link below and turn to page 112

Jun 02, 2009 | Brother MFC-7820N All-In-One Laser Printer

1 Answer

Brother MFC-7820N Toner Problem

Open the cover, press Options and then *00.

Apr 22, 2009 | Brother MFC-7820N Laser Printer

1 Answer

Brother 7820N, printing image repeats?

have you tried changing the drum unit for a brother oem unoit and oem toner? generic toner and drum will always mess the machine up!!!!!!! good luck brother sr tech

Dec 22, 2008 | Brother MFC-7820N Printer

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Brother mfc 6800 all in one

dear friends
Cheap Brother TN250 toner cartridges and Brother TN-250 supplies from
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Toner life end message flashes

did you reset the toner life?

open the front cover, press the option button, on the screen will display ''reset toner life 1 yes 2 no ''
press 1 and close the cover.

toner life reseted

May 06, 2008 | Brother MFC-7820N Laser Printer

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