Slide the Hold switch to the locked position
Press and hold the Play/Pause button until the screen turns off
If it does not respond, let the battery drain completely
To turn it back on, press any button after unlocking Hold
Slide the Hold switch to the locked position
Press and hold the Play/Pause button until the screen turns off
If it does not respond, let the battery drain completely
To turn it back on, press any button after unlocking Hold