1.With power on, open the toner access main door (You will get a "door open" message in the LCD.)
2.Hit the "Clear/Back" button and you go right to the “Toner Reset Menu”
3.Using the up ^ Down > "Search" arrow buttons you can then scroll through reset options for each of the printer's [4] toner cartridges!
Code: B. = black; C. = cyan; M. = magenta and Y. = yellow
4.For each for these cartridges is the option to reset for low yield = S or High Yield - H
5.Using the number keypad, select option #1 (to reset each to "H")
6.Hit the "Clear/Back" button to get out of the menu, close door and You will be able to print.