Troubleshooting - Yamaha NS-PA41 Owner's Manual

■ Front speakers (NS-F40), center speaker (NS-C40) and surround speakers (NS-B40)
Issue
There's no sound.
The sound is very quiet.
■ Subwoofer (NS-SW050)
Issue
The POWER switch is set
to ON but the subwoofer
doesn't work.
There's no sound.
Sound level is too low.
The sound is interrupted.
9
En

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.
The volume is too loud.
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.
Since the output is excessive, reduce the volume level.