From the control panel, navigate to:
Settings > Paper > Tray Configuration
For non-touch-screen printer models, press to navigate through the settings.
Select a paper source.
Set the same paper size and paper type for the trays that you are linking.
From the control panel, navigate to:
Settings > Device > Maintenance > Config Menu > Tray Configuration
Set Tray Linking to Automatic.
Note: To unlink trays, make sure that no trays have the same paper size and paper type settings.
Warning—Potential Damage: The temperature of the fuser varies according to the specified paper type. To avoid printing issues, match the paper type setting in the printer with the paper loaded in the tray.