How to reset Brother HL-3140CW, HL-3170CDW toner cartridges,
( Optional but recommence )Follow the Video instruction Link will give you another 300-500 pages on your toner cartridges before refill the cartridges. This also the information on how to reset the cartridge after refill the cartridges. I am recommence to do this first, that way the toner cartridges will have less toner powder to throw away when process the refilling cartridges step.
https://www.youtube.com/watch?v=OsttkA329Bs
How to refill Brother HL-3140CW, HL-3170CDW toner cartridges,
Check the link below for the video instruction, Please remember better cleaning of the cartridge and not mixing previous toner with new toner, the better quality printing result.