How To solve toner error in brother printer HL 2321D

 We need to Reset toner first for this error

1. First unplug the power cable.
2. Then open the front panel of the printer and the press the two button togeather (Power+GO) and plug in the power cable back while pressing both buttons. all lights will glow togeather till 10 sec.
3. Now release the Power button. Continue pressing Go button for 5 second and then release it and Press This button 9 times.
4. then all light will glow again at that time close the front panel again.
5. after closing the front panel press go button for 2 times
6. Now printer will reset and whole lights will glow accordingly