When the printer shows "Replace drum"or Drum end soon",please follow this video to reset your printer.

part one：For Printer with Multi-line LCD

first：When ready is displayed on the machine interface，Press the Up arrow key while holding down OK on the machine's control panel.

second：Press the up or down arrow keys to display the Drum Unit，Press OK.

third：Press the Up or Down arrow key to display the color of the drum unit that you replaced，Press OK

last：Press the Up arrow key for Reset to reset the drum counter，Reset completed when Accepted is displayed.

part two：For Printer with Touch Screen Display

first：Press and hold  for about five seconds

second：Press Drum，Select the toner color for the drum unit you just replaced

last：Press Yes，Reset completed when Accepted is displayed.