Denon DHT-S217 Owner's Manual page 30

Contents Connections
0 When the auto on control function is off for the TV (HDMI eARC/ARC) input, the auto on
control function for the HDMI IN input also turns off.
0 Even if the auto on control function is off for the TV (HDMI eARC/ARC) input, when this unit
is powered on and playback is performed with TV or HDMI playback devices, the input
source switches automatically to TV (HDMI eARC/ARC) or HDMI IN.
0 Even if the auto on control function is on for the optical input or AUX input, the input source
will not switch automatically during HDMI (eARC/ARC) playback.
0 When this unit is in deep standby mode, the auto on control function of the optical
and AUX inputs cannot turn on the unit. (v p. 28)
Playback Settings
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