Troubleshooting - Yamaha NS-SW300 Owner's Manual

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.
Problem Cause
Power is not supplied The power plug is not securely
even though the connected.
STANDBY/ON switch
The POWER switch is set to the
is set the ON position.
OFF position.
A system connected component is
turned off.
The unit cannot be Electric shock (such as a lightning
operated. strike or excessive static
electricity) or power supply
voltage drop has caused the
internal microcomputer to freeze.
The subwoofer does not The system control cable is not
turn on automatically connected properly or securely.
via the system
The POWER switch is set to OFF.
connection.
No sound. The volume is set to minimum.
Speaker cables are not connected
securely.
Low range sound is too Speaker cables are not connected
soft or not heard. correctly.
The PHASE switch is not set
correctly.
A source sound with little bass
frequency content is being played.
The sound is influenced by
standing waves.
No bass frequency content is
being output from the amplifier.

TROUBLESHOOTING

What to Do Problem
Connect it securely. The volume
automatically
decreases, or the unit
Set the POWER switch to the ON
turns off.
position.
Turn on the system connected
component.
Once set the POWER switch to the
OFF position and then set the
POWER switch to the ON
position.
Connect the system control cable
properly.
Set the POWER switch to ON.
Even though the
Increase the volume. STANDBY/ON switch
is pressed to turn on the
Connect speaker cables securely.
unit, the indicator
simply flashes red and
Connect them correctly, that is L
does not turn on.
(left) to L; R (right) to R; "+" to
The subwoofer does not
"+" and "–" to "–".
turn on automatically.
Set the PHASE switch to the other
position.
Play a source sound with bass
frequencies.
Set the HIGH CUT control to a
higher position.
Relocate the subwoofer or change
its positioning angle.
Check the bass output setting of the
amplifier.
Cause What to Do
The temperature of the unit has
• Decrease the volume. If the
abnormally increased due to the
problem does not improve, turn
following causes.
off the unit, wait until it cools
• The unit is used continuously down, and then turn it on again.
at a high volume.
• Do not set up the unit in a
• The unit is used in a location
location exposed to direct
with a high temperature. sunlight or where the
temperature becomes
• The unit is set up and used in a
extremely high (for example,
poorly ventilated location.
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.
The protection circuit was Unplug the power cable from the
activated due to an internal failure. AC outlet, and then plug it in
again. If the problem does not
improve, contact an authorized
Yamaha dealer or service center.
The POWER switch is set to the Set the POWER switch to the ON
OFF position. position.
The STANDBY/ON switch is set Set the STANDBY/ON switch to
to the STANDBY position. the ON position.
The AUTO STANDBY switch is Set the AUTO STANDBY switch
set to the OFF position. to the HIGH or LOW position.
The level of input signal is too Set the AUTO STANDBY switch
low. to the HIGH position, and increase
the output level of the amplifier.
No bass frequency content is Check the bass output setting of the
being output from the amplifier. amplifier.
14 En