Yamaha RX-V571 Owner's Manual page 83

Audio
No sound.
The volume cannot be increased.
No sound is output from one speaker.
No sound is heard from the surround
back speakers.
No sound is heard from the subwoofer.
No sound from a device connected
using an HDMI cable.
No appropriate input source has been selected.
Signals that the unit cannot reproduce are being input from a source
device, such as a CD-ROM.
The mute function is activated.
The cable between the unit and the external device may be
malfunctioning.
The max volume of the unit is restricted by "Max Volume" function.
The device connected to the output jack of the unit is not turned on.
(This may occur because of the character of AV receiver.)
Sound may not be output from certain channels, depending on the
input source.
Sound may not be output from certain channels, depending on the
sound program or decoder.
Output from the affected speaker is disabled.
The volume of the affected speaker is set excessively low.
The cable between the unit and the external device may be
malfunctioning.
The affected speaker may be malfunctioning.
"Max Volume" is set to a low value.
The speakers that have a problem cannot be confirmed.
"Extended Surround" is set to "Off."
The source does not contain LFE or low frequency signals.
The subwoofer is inactive.
The subwoofer is tuned off.
The volume of the subwoofer is set to a low value.
The connected HDMI device does not support high-bandwidth digital
copyright protection (HDCP).
HDMI input audio is set to not output from the speakers.
The number of devices is over the limit.
Select an appropriate input source with the input selection key.
Use an input source that has signals that can be reproduced on the unit.
Press MUTE to unmute.
Make sure that all speaker cables between the unit and speakers are
connected properly. If after checking you can find no problems, replace the
cables.
Adjust the max volume of the unit in "Max Volume" in the "Setup" menu.
Turn on all devices connected to the unit.
You can confirm the number of source channels in the input signal with
"Channel (Chan)" of "Signal Info" in the "Option" menu (p.61).
You can confirm the number of output channels with the speaker indicators on
the front display (p.8).
Perform YPAO (p.29), or set the size or enable the affected speaker in
"Configuration" (p.65) on the "Setup" menu.
Perform YPAO (p.29), or adjust the volume level of the affected speaker in
"Level" (p.66) on the "Setup" menu.
Make sure that all speaker cables between the unit and speakers are
connected properly. If no problem, replace the cables.
Replace the affected speaker with another speaker that is operating correctly
to confirm whether the speaker is malfunctioning. If no sound comes from the
replacement speaker, the unit may be malfunctioning.
Set it to a higher value.
Use "Test Tone" to confirm the speakers that do not output sounds (p.67).
Set "Extended Surround" to a decoder or "Auto" (p.61).
To confirm, set "Extra Bass" to "On" to output the low frequency sound of the
front channel from the subwoofer (p.66).
Perform YPAO (p.29), or set "Subwoofer" to "Use" in the "Setup" menu (p.66).
Turn on the subwoofer.
Set it to a higher value.
You can confirm if message concerning HDMI error is displayed in "Signal
Info" in the "Option" menu (p.61).
Set "Amp" to "On" in "Audio Output" of the "Setup" menu (p.73).
Disconnect some of the HDMI devices.
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