Issue
The message <1G CHG."color" TNR> appears in the display on the control panel.
The message <1G CHG."color" TNR> appears in the display on the control panel.
Cause and Solution
The toner cartridge of K (Black), Y (Yellow), M (Magenta), or C (Cyan) has reached the end of its life.
(When the message is displayed even after the cartridge is replaced with a new one) The toner is harden at the bottom of the toner cartridge.
Remove the replaced toner cartridge, hold the toner cartridge so that its tab is at the bottom, shake the cartridge up and down forcefully again to evenly distribute the toner inside the cartridge, and then install the toner cartridge.