Reset the toner sensor on a brother mfc 9970 - Brother Office Equipment & Supplies

SOURCE: Factory reset Brother MFC-7320

1. Open cartridge cover
2. Press the button Clear / Back
3. Press start button
4. Print number 11
5. Close cartridge cover

Now, your printer is returned to the factory settings.

SOURCE: Brother MFC-7820N Toner Problem

Open the cover, press Options and then *00.

John Tuminaro

• 56 Answers
• Posted on Jan 15, 2009

SOURCE: Need to reset 'Drum near end' warning on Brother MFC-8460N.

Open the front door
Press clear
then press 1

SOURCE: reset drum - brother mfc-8860dn

Open front cover

Remove drum unit and toner cartridge assembly

Put drum unit and toner cartridge assembly back in machine, but do no close front cover.

Press Clear/Back
You will get a message "Replace Drum?"
Select Yes to confirm

SOURCE: 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.