Andrew Watson: I started this site to post helpful tips from all areas of my expertise and 41,845 views 0:59 How to reset the toner cartridges for Brother printer - Duration: 1:15.

So far this printer has been working for over 10 years and the parts are cheaper now.

it was for a different machine but it's similar:'t mess around with the toner cartridge since that's not your problem here. so i'm guessing the problem must be caused by toner contamination inside the printer. I figured it was the drum so changed that along with a brand new toner cartridge. Drum Error Brother Printer Mfc-7440n Loading...

i've mis-read the info i got from the service manual. If you have the covers off, you can see the shutter and watch it open and shut when inserting the drum/toner unit. Sign in 93 15 Don't like this video? But I shined the inside of the printer and saw lots of toner.

It worked for me, a blessing in disguise as its my only printer and it had never let me down before.