Troubleshooting - Yamaha NS-P40 Owner's Manual

Notes
• Once the subwoofer volume has been set, you can
leave the subwoofer's VOLUME control set as it is
and use your amplifier's volume control to adjust the
volume of the entire system.
If this product doesn't work as expected, look for a possible cause below. If the issue you are experiencing is not
listed, or you cannot resolve it after reading through these instructions, disconnect the power cable and contact an
authorized Yamaha dealer or service center.
■ Front, surround speakers (NS-B40) and center speaker (NS-C40)
Issue
There's no sound.
The sound is very quiet.
■ Subwoofer (NS-SW40)
Issue
The POWER switch is set
to ON but the subwoofer
doesn't work.
There's no sound.
The subwoofer is too
quiet.

Troubleshooting

Possible cause
The speaker cables are not
connected properly.
The speaker cables are not
connected properly.
Possible cause
The power cable is not connected
properly.
The VOLUME control is set to 0. Turn up the VOLUME control.
The subwoofer cable is not
connected properly.
The source material doesn't
contain much bass.
Bass sounds are being cancelled
out by standing waves.
• If you replace the front speakers (NS-B40) with
other speakers, you will need to re-adjust the
subwoofer's volume.
Remedy
Make sure the speaker cables are connected properly.
Make sure the speaker cables are connected properly:
L (left) to L, R (right) to R, "+" to "+" and "–" to "–".
Remedy
Set the POWER switch to OFF, then make sure the power
cable is connected properly.
Make sure the subwoofer cable is connected properly.
Try playing source material that contains more bass.
Reposition the subwoofer, or break up parallel wall surfaces
by placing bookshelves or other large objects along the wall.
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