Sony HT-S40R Operating Instructions Manual page 29

Volume adjustment
The TV sound that you are watching is
output from the speaker system
automatically. You can adjust the
speaker system volume by the TV
remote control.
Other Interlocking Function
One-Touch Play Function
When you play content on a Blu-ray Disc
player or "PlayStation 4," etc. connected
®
to the TV, the speaker system and TV are
turned on automatically.
Tip
You can change the Control for HDMI
function setting on [HDMI] - [CONTROL FOR
HDMI] (page 32) in the setting menu.
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