Troubleshooting - Pioneer S-31W Operating Instructions Manual

Troubleshooting

Incorrect operations are often mistaken for trouble and malfunctions. If you think that there is
something wrong with this component, check the points below. Sometimes the trouble may lie in
another component. Investigate the other components and electrical appliances being used. If the
trouble cannot be rectified even after exercising the checks listed below, ask your nearest PIONEER
authorized service center or your dealer to carry out repair work.
Symptom
No power is being supplied
(Indicator does not light up
when POWER switch is
turned on) .
No sound
(Indicator is lit blue) .
Sound is distorted.
Howling noise occurs.
Much noise when listening
to AM or FM broadcasts.
No sound is produced
(power indicator lights red).
Initial sounds of a track
can't be heard.
6
En
Cause
• Power supply plug is not
correctly inserted.
• Connection of accessory
RCA plug cord is wrong or
disconnected.
• Volume knob is set to MIN.
• Input level is too low.
• Level is too high.
• Input level is too high.
• No power supplied to the
.
receiver
• Subwoofer level is set too
high.
• The AM loop antenna or
the FM indoor antenna is
close to this unit.
• Unit has entered standby
mode.
• The audio signal was input
when the unit was in the
standby mode.
Remedy
• Insert plug securely.
• Check again and connect
correctly.
• Turn clockwise slowly.
• Raise the receiver's output
level.
• Turn the volume knob counter-
clockwise to lower the level.
• Turn the 's output level
receiver
(volume, bass control, bass
boost) counter-clockwise to
lower the level.
• Connect an
receiver
supply power.
• Place the subwoofer a good
distance from speakers. Turn
the volume knob counter-
clockwise to lower the volume.
• Increase the distance between
the AM or FM antenna (for
indoor use) and this unit.
• Turn the Auto Standby
function OFF.
– When the Auto Standby
function is turned ON, if no
signal (or only a very weak
signal) is input for a period
of about ten minutes, the
power mode will
automatically change to
standby.
– Note that when listening
with the volume set to a very
low level, the Auto Standby
function may operate,
switching the unit to the
standby mode.
and