Samsung UA40ES6200R E-Manual page 592

N
When the receiver (i.e. Home
Theatre) is set to on, you can
hear sound output from the TV's
Optical jack. When the source is a
digital component such as a DVD
player and it is connected to the
TV via HDMI, you will hear only 2
channel sounds from the receiver.
Using the ARC function
for LED 6200 Series and above, PDP TV