Yamaha ATS-2070 Mode D'emploi page 36

Audio
Problem
No sound.
No sound is coming from the
subwoofer.
36
En
Cause
Another input source is selected.
The mute function is activated.
The volume is too low.
The power cable of the center unit is not connected
properly.
Input jacks on a playback device are connected.
Signals that the unit cannot play back are being input.
The center unit is configured so that HDMI audio input
signals are output from the TV.
The HDMI control function is disabled.
Sound from an HDMI control-enabled TV is set for output
from the TV's built-in speakers.
The subwoofer is not connected to an AC wall outlet.
The protection circuitry in the subwoofer has been
activated.
Remedy
Select an appropriate input source (p. 24).
Cancel the mute function (p. 26).
Turn up the volume (p. 26).
Make sure that the power cable of the center unit is connected to
an AC wall outlet securely (p. 22).
Connect the input jack on the center unit and the output jack on
the playback device.
Change the digital audio output setting on the playback device to
PCM, Dolby Digital or DTS.
Configure the unit so that HDMI audio input signals are output
from the unit (p. 32).
When connecting a TV that supports ARC (Audio Return
Channel) to the unit using an HDMI cable only, enable the HDMI
control function (p. 32).
To output audio signals from this unit with the HDMI control
function disabled, connect the TV's audio output jack to the
center unit's TV input jack (optical digital) via the optical digital
audio cable (p. 20).
Use the TV's HDMI settings to set audio output to any option
other than the TV's built-in speakers.
Plug in the power cable of the subwoofer to an AC wall outlet (p.
22).
To protect the product, the power of the subwoofer cannot be
turned on. Unplug the power cable from the AC wall outlet and
contact the nearest authorized Yamaha dealer or service center.