Yamaha A-S500 Owner's Manual page 16

TROUBLESHOOTING
Problems
No sound.
The sound suddenly
goes off.
Only the speaker on
one side can be
heard.
There is a lack of
bass and no
ambience.
A "humming" sound
can be heard.
The volume level is
low while playing a
record.
The volume level
cannot be increased,
or the sound is
distorted.
The sound is
degraded when
listening with the
headphones
connected to the CD
player or the tape
deck connected to
this unit.
The sound level is
low.
14
En
Possible Causes
Sound is muted.
Incorrect cable connections.
Playback has been stopped on the
connected component.
No appropriate input source has been
selected.
The SPEAKERS selector is not set
properly.
The protection circuitry has been activated
because of a short circuit, etc.
This unit has become too hot.
The automatic power down function has
turned this unit off.
Incorrect cable connections.
Incorrect setting for the BALANCE
control.
The + and – wires are connected in
reverse at the amplifier or the speakers.
Incorrect cable connections.
No connection from the turntable to the
GND terminal.
The turntable is connected to the jacks
other than the PHONO jacks.
The record is being played on a turntable
with an MC cartridge.
The component connected to the LINE 2
REC or LINE 3 REC jacks of this unit is
turned off.
This unit is turned off or is in standby
mode.
Sound is muted.
The loudness control function is
operating.
Solutions
Press MUTE button on the remote control or rotate
the VOLUME control.
Connect the stereo cable for audio units and the
speaker wires properly. If the problem persists, the
cables may be defective.
Turn the component on and start playback.
Select an appropriate input source with the INPUT
selector on the front panel (or one of the INPUT
selector buttons on the remote control).
Set the corresponding SPEAKERS selector to A, B or
A+B position.
Check that the IMPEDANCE SELECTOR setting is
correct.
Check that the speaker wires are not touching each
other or shorting out against the rear panel of this
unit, and then turn this unit on again.
Reconsider the location where this unit is installed.
Make sure the openings on the top panel are not
blocked.
Confirm that there are no other issues causing this
problem, and then turn this unit on again.
Connect the cables properly. If the problem persists,
the cables may be defective.
Set the BALANCE control to the appropriate
position.
Connect the speaker wires to the correct + and –
phase.
Connect the audio plugs firmly. If the problem
persists, the cables may be defective.
Make the GND connection between the turntable and
this unit.
Connect the turntable to the PHONO jacks.
Use a turntable equipped with an MM cartridge.
Turn on the power of the component.
Turn this unit on.
Press MUTE button on the remote control or rotate
the VOLUME control.
Turn down the volume, set the LOUDNESS control
to the FLAT position, and then adjust the volume
again.
Refer to
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