Owner's Manual

7 En
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)
■ Subwoofer (NS-SW050)
Troubleshooting
Issue Possible cause Remedy
There’s no sound. The speaker cables are not
connected properly.
Make sure the speaker cables are connected properly.
The sound is very quiet. The speaker cables are not
connected properly.
Make sure the speaker cables are connected properly:
L (left) to L, R (right) to R, “+” to “+” and “–” to “–”.
Issue Possible cause Remedy
The POWER switch is set
to ON but the subwoofer
doesn’t work.
The power cable is not connected
properly.
Set the POWER switch to OFF, then make sure the power
cable is connected properly.
There’s no sound. The VOLUME control is set to 0. Turn up the VOLUME control.
The subwoofer cable is not
connected properly.
Make sure the subwoofer cable is connected properly.
Sound level is too low. The source material doesn’t
contain much bass.
Try playing source material that contains more bass.
Bass sounds are being cancelled
out by standing waves.
Reposition the subwoofer, or break up parallel wall surfaces
by placing bookshelves or other large objects along the wall.
The sound is interrupted. The volume is too loud. Since the output is excessive, reduce the volume level.