|Saving Toner on a Brother HL-5170DN|
My printer (a Brother HL-5170DN) declares that it ran out of toner (it uses a TN-3030 cartridge) while printing quality is still perfect. This 'problem' is indicated by the continuously red 'Status' light, while the toner light is also on (continuously). Moreover, it refuses to print.
Inspired by this site, I decided to try something similar and it works for me.
Here are the steps (of course, you attempt these at your own risk!):
GObutton until all lights (toner, drum, paper, status) have all gone on and off again.