How to Fix Toner Problem on Brother HL-2240D

The Toner is new, but the light for toner still there. How to fix it?

1) Turn off your brother HL-2240D.
2) Open the lid where you put in the toner.
3) Hold down the go button.
4) With the go button still held, turn on your brother HL-2240D.
5) When the three lights light up, release the button and then press the go button again twice.
6) All the light should light up.
7) When all five lights light up, press the go button five times.
8) Wait until the ready light is lit.
9) Close the lid.