Press and hold the setting key for a long time (at this time, the red indicator of the remote controller flashes). If you want to turn off the TV screen of the machine, you will see the mute character or the red quick release setting key on the TV, and continue to press and hold the TV until green is displayed. Press the setting key quickly again to finish. There is another way: press and hold the setting key, and when the red indicator light of the remote controller flashes, press and hold the power button of the remote controller (red) with another finger, and release the button with both hands at the same time.