Brother HL 2141 toner - Brother HL-2040 Laser Printer

SOURCE: Brother Hl 5240 printer- toner light on

1) Turn off printer
2)Turn back on
3) Remove Drum and Toner.
4)Press Go for 1 second(it appears to do nothing)
5)Put Drum and Toner back in.
6)Press Go for 1 second(it appears to do nothing)
7)Close door.
Try that

SOURCE: brother HL 5250 red light flashing

I found this solution on the web-- Hope it helps.

The HL-2070N gets stuck in a toner end-of-life error condition. Perform the following to clear :
With paper loaded, new toner in,

Open front door
Turn off printer
While holding down the GO button, turn printer back on
When all four LEDs light up release GO button. All LEDs will turn off
Press the GO button 2 times. The 3 LEDs (toner, drum, paper) will light up solid
Press the GO button 5 times
Paper light will be blinking
At this point the toner end-of-life condition has been reset. Close front door.
BTW, I got this from Brother Support. Also, just a reminder, timing is important here so don't pause between button presses.

SOURCE: Brother HL-5140, Status light is red and toner

It is very hard to find the reset instructions on the Brother Solutions site.

1. Turn the printer off.
2. Press and hold the Go button on the front of the printer, at the same time turn the printer power on.
3. When the Toner light is on by itself, release the Go button.
4. Push and hold the Go button again, release the Go button when the Paper light is on by itself.

SOURCE: Brother HL-2040 toner light stays on

I found this and it worked great.

1. Power Unit off

2. Open front cover

3. Press and hold GO and turn power on

4. When all 3 lights lit release and press GO twice

5. All lights turn solid

6. With all solid, press GO 5 times

7. Ready light GOes red

8. Close door and you're all set

Testimonial: "Thanks!"

SOURCE: Brother HL-6050dn Toner Life End

I just got through this problem, The customer had a "refilled cartridge.
The Flag on the left side near the gearset of the Toner cartridge was not
brought back to the proper position, just undo the three srews and reset the flag.
works like a champ,. your welcome.