Using the sleep timer
Use this function to automatically switch the power to the standby mode after a specific amount of time (minutes).
Press SLEEP during playback and select the setting time.
The sleep timer can be set to up to 90 minutes, in steps of 10 minutes.
After about 3 seconds, the setting is entered and the display returns to as it was before.
Canceling the sleep timer
Either press SLEEP to select “Sleep 
OFF” or press POWER 
.
To check the time remaining until the sleep timer is activated
Press SLEEP.