Onkyo HT-RC160 Manuel D'instructions page 220

Troubleshooting
Symptom
There's no sound
coming from certain
speakers?
The subwoofer does not
turn on?
The subwoofer produces
no sound?
The subwoofer produces
hardly any sound?
A humming sound can
be heard from the
subwoofer?
12
En-
Possible cause
The speaker cables are not connected
properly.
The speaker configuration is not set
correctly.
The power plug is not fully inserted into
the wall outlet.
The OUTPUT LEVEL control is set to
minimum.
The RCA cable is not properly connected
to the subwoofer's LINE INPUT.
The level of the input signal was too low
and the subwoofer entered Standby
mode.
The Subwoofer configuration is not set
correctly.
The source material contain little or no
bass content.
The RCA cable is not properly connected
to the subwoofer's LINE INPUT.
External interference from a TV or other
electronic device is being picked up.
Remedy
Check the speaker cables and correct as
necessary.
Check the speaker configuration.
Insert the power plug fully into the wall
outlet.
Turn up the OUTPUT LEVEL control.
Make sure that the RCA cable is properly
connected to the subwoofer's LINE INPUT.
Slightly increase the subwoofer pre out
output level on your AV receiver.
Check the subwoofer setting in the speaker
configuration on your AV receiver.
Choose source material with more bass
content.
Make sure that the RCA cable is properly
connected to the subwoofer's LINE INPUT.
Move the subwoofer and RCA cable away
from the interference source. Make sure your
audio system is grounded properly.