User Manual

14 En
English
Refer to the chart below if this unit does not function properly.
If the instructions given below do not help, or if the problem you are experiencing is not listed below, turn off the power to the unit, disconnect the power cord and contact an authorized
Yamaha dealer or service center.
TROUBLESHOOTING
Problem Cause What to Do
Power is not supplied
even though the
STANDBY/ON switch
is set the ON position.
The power plug is not securely
connected.
Connect it securely.
The POWER switch is set to the
OFF position.
Set the POWER switch to the ON
position.
A system connected component is
turned off.
Turn on the system connected
component.
The unit cannot be
operated.
Electric shock (such as a lightning
strike or excessive static
electricity) or power supply
voltage drop has caused the
internal microcomputer to freeze.
Once set the POWER switch to the
OFF position and then set the
POWER switch to the ON
position.
The subwoofer does not
turn on automatically
via the system
connection.
The system control cable is not
connected properly or securely.
Connect the system control cable
properly.
The POWER switch is set to OFF. Set the POWER switch to ON.
No sound. The volume is set to minimum. Increase the volume.
Speaker cables are not connected
securely.
Connect speaker cables securely.
Low range sound is too
soft or not heard.
Speaker cables are not connected
correctly.
Connect them correctly, that is L
(left) to L; R (right) to R; “+” to
“+” and “–” to “–”.
The PHASE switch is not set
correctly.
Set the PHASE switch to the other
position.
A source sound with little bass
frequency content is being played.
Play a source sound with bass
frequencies.
Set the HIGH CUT control to a
higher position.
The sound is influenced by
standing waves.
Relocate the subwoofer or change
its positioning angle.
No bass frequency content is
being output from the amplifier.
Check the bass output setting of the
amplifier.
The volume
automatically
decreases, or the unit
turns off.
The temperature of the unit has
abnormally increased due to the
following causes.
• The unit is used continuously
at a high volume.
• The unit is used in a location
with a high temperature.
• The unit is set up and used in a
poorly ventilated location.
• Decrease the volume. If the
problem does not improve, turn
off the unit, wait until it cools
down, and then turn it on again.
• Do not set up the unit in a
location exposed to direct
sunlight or where the
temperature becomes
extremely high (for example,
near a heater).
• Turn off the unit, and when the
temperature of the unit has
sufficiently decreased, set up
the unit in a well-ventilated
location and turn it on again.
Even though the
STANDBY/ON switch
is pressed to turn on the
unit, the indicator
simply flashes red and
does not turn on.
The protection circuit was
activated due to an internal failure.
Unplug the power cable from the
AC outlet, and then plug it in
again. If the problem does not
improve, contact an authorized
Yamaha dealer or service center.
The subwoofer does not
turn on automatically.
The POWER switch is set to the
OFF position.
Set the POWER switch to the ON
position.
The STANDBY/ON switch is set
to the STANDBY position.
Set the STANDBY/ON switch to
the ON position.
The AUTO STANDBY switch is
set to the OFF position.
Set the AUTO STANDBY switch
to the HIGH or LOW position.
The level of input signal is too
low.
Set the AUTO STANDBY switch
to the HIGH position, and increase
the output level of the amplifier.
No bass frequency content is
being output from the amplifier.
Check the bass output setting of the
amplifier.
Problem Cause What to Do