What else can I do to fix my printer?
It's a Brother wireless printer with only black and white toner. It's been saying to slide the green tab for over a week now. I did, hundreds of times, tried cleaning it with an air duster, a vacuum, a leaf blower, alcohol and cotton swabs, paper towels, and even ordered a brand new drum unit and it's still saying to slide the green tab on the new drum.
I know the toner is still good because it's new and has only been used maybe 20 times. So what else can the problem be that's causing the slide the green tab error?