Sony HT-ST3 Reference Manual page 12

Dolby Digital or DTS multi-channel sound is not reproduced.
 Check the audio setting of Dolby Digital or DTS format on the Blu-
ray Disc player, DVD player, etc., connected to the system.
The surround effect cannot be obtained.
 Depending on the input signal and the SOUND MODE setting,
surround sound processing may not work effectively. The surround
effect may be subtle depending on the program or disc.
 If you connect a Blu-ray Disc player or a DVD player compatible with
the surround effect function, the surround effect of the system may
not work. In this case, set the surround effect function of the
connected equipment to off. For details, refer to the operating
instructions supplied with the connected equipment.
BLUETOOTH
BLUETOOTH connection cannot be completed.
 Make sure that the BLUETOOTH indicator is lit in blue (refer to
"Listening to the audio from BLUETOOTH devices" in the Operating
Instructions).
System status
During BLUETOOTH pairing
The system is attempting to connect
with a BLUETOOTH device
The system has established in
connection with a BLUETOOTH device
The system is in BLUETOOTH standby
mode (when the system is off)
 Make sure the BLUETOOTH device to be connected is turned on and
the BLUETOOTH function is enabled.
 Locate this system and the BLUETOOTH device as near as possible.
 Pair this system and the BLUETOOTH device again.
 You may need to cancel the pairing with this system using your
BLUETOOTH device first.
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Indicator status
Flashes quickly in blue.
Flashes in blue.
Lights up in blue.
Flashes slowly in blue.
Pairing cannot be done.
 Bring this system and the BLUETOOTH device closer together (refer
to "Listening to the audio from BLUETOOTH devices" in the
Operating Instructions).
 Make sure this system is not receiving interference from a Wi-Fi
network, other 2.4 GHz wireless devices, or a microwave oven. If a
device that generates electromagnetic radiation is nearby, move
the device away from this system.
BLUETOOTH connection is disconnected.
No sound from the connected device is output.
 Bring this system and the BLUETOOTH device closer together.
 If a device that generates electromagnetic radiation, such as a Wi-
Fi network, other BLUETOOTH devices, or a microwave oven is
nearby, move the device away from this system.
 Remove any obstacle between this system and the BLUETOOTH
device, or move this system away from the obstacle.
 Re-position the BLUETOOTH device connected.
 Try changing the Wi-Fi frequency of the Wi-Fi router, computer, etc.,
to 5 GHz band.
The sound is not in sync with the image.
 When you are watching movies, you may hear the sound with a
slight delay from the image.
OTHERS
The remote control does not function.
 Point the remote control at the remote control sensor
system (refer to "Parts and controls" in the Operating Instructions).
 Remove any obstacles in the path between the remote control and
the system.
 Replace both batteries in the remote control with new ones, if they
are weak.
 Make sure you are pressing the correct button on the remote
control.
The Control for HDMI function does not work properly.
 Check the HDMI connection.
 Set up the Control for HDMI function on the TV.
on the