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ADDITIONAL INFORMATION
If there is any problem with the system, check the following items. If you cannot solve a problem with the
following remedies, or if the problem is not listed below, turn off and unplug the system, and then consult your
nearest authorized Yamaha dealer or Service Center.
Additional information
Troubleshooting
Problem
Cause
Solution
See
page
Power turns on but
immediately shuts off.
The power cable may be connected
improperly.
Make sure the power cable is plugged into
the outlet firmly.
A speaker cable may be shorted.
Make sure all speaker cables are connected
properly.
This system may have received a
strong electrical shock, such as from a
lightening bolt or excessive static
electricity.
Set this system to standby mode, and then
disconnect the power cable. Wait for about
30 seconds, connect the power cable, and
then turn the system on again.
The speakers make no
sound.
The volume may be set to minimum
level.
Adjust the volume level.
The mute function may be activated.
Cancel the mute function.
The input source or input setting may
be incorrect.
Select the correct input source or input
setting.
The cables may be connected
improperly.
Make sure all cables are connected
properly.
“HDMI AUDIO” in the setup menu is
set to “TV”.
Set “HDMI AUDIO” in the setup menu to
“AMP”.
Sound is too low on
one side.
The cables may be connected
improperly.
Make sure all cables are connected
properly.
Speaker channels
other than the front
ones make no sound.
You may be listening to stereo sounds
without surround mode.
Press a surround mode button to enable the
sound field effect.
“SUR. LEVEL” in the setup menu is
set to minimum level.
Adjust “SUR. LEVEL” in the setup menu.
The subwoofer makes
no sound.
The volume of the subwoofer channel
may be set to minimum level.
Adjust the volume level of the subwoofer.
The source does not contain low-
frequency signals.
The volume level
decreases without any
operation.
You turned off the system when the
volume level was over 70.
The volume level is automatically set to 70
the next time you turn on the system to
protect the speakers.
—
Sound is poor (noisy).
A speaker cable may be shorted.
Make sure all cables are connected
properly.
This system does not
operate properly.
This system may receive a strong
electrical shock, such as from a
lightening bolt or excessive static
electricity, or drop in power supply.
Set this system to standby mode, and then
disconnect the power cable. Wait for about
30 seconds, connect the power cable, and
then turn on this system.
A digital or high-
frequency equipment
produces noises.
The system may be placed close to
digital equipment or high-frequency
equipment.
Place this system farther away from such
equipment.
—
Summary of Contents for YHT-S400
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