There are a variety of reasons for wanting to replace your toner cartridge ,depending on your reasons follow these steps to replace a toner cartridge when no toner out message is displayed, press the setup button on the control panel, press the or button to select Print Settings, then press the button, press the or button to select Reset Menu, then press the button, press the or button to select Change Toner C/M/Y/K for the colour of the toner cartridge you want to change, then press the button, when Replace Toner appears, open the front door and replace the toner cartridge, close the front door to bring the printer back online. The printer could display the following message on the LCD panel or the window of EPSON Status Monitor: LCD Panel Message description Toner Low the toner cartridge for the colour is nearly empty.*C, M, Y, and/or K are indicated for the colour of the toner to be replaced. For example, the message Y Toner Low means that the amount of remaining toner in the yellow toner cartridge is low, make sure that ready or Sleep is displayed on the LCD panel. Select Change Toner X (the letters C, M, Y, or K appears in place of X, indicating the colours Cyan, Magenta, Yellow, and Black) in the Reset Menu on the control panel. While the cartridge X you selected above moves to the cartridge replacement position, Please Wait appears on the LCD panel. Replace Toner X appears in the LCD panel when the cartridge to be replaced reaches the cartridge replacement position. Change the toner cartridge.