Yamaha A-S700 User Manual
Page 15
13
En
TROUBLESHOOTING
ADDITIONAL
IN
FO
RMATION
Engli
s
h
No sound
Sound is muted.
Press MUTE on the remote control to resume the
audio output.
Incorrect cable connections.
Connect the stereo cable for audio units and the
speaker wires properly. If the problem persists, the
cables may be defective.
No appropriate input source has been
selected.
Select an appropriate input source with the INPUT
selector on the front panel (or one of the input
selector buttons on the remote control).
The SPEAKERS selector is not set
properly.
Set the corresponding SPEAKERS selector to A, B or
A+B position.
The sound suddenly
goes off.
The protection circuitry has been activated
because of a short circuit, etc.
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 the power of this unit back on.
Only the speaker on
one side can be
heard.
Incorrect cable connections.
Connect the cables properly. If the problem persists,
the cables may be defective.
Incorrect setting for the BALANCE
control.
Set the BALANCE control to the appropriate
position.
There is a lack of
bass and no
ambience.
The + and – wires are connected in
reverse at the amplifier or the speakers.
Connect the speaker wires to the correct + and –
phase.
A “humming” sound
can be heard.
Incorrect cable connections.
Connect the audio plugs firmly. If the problem
persists, the cables may be defective.
No connection from the turntable to the
GND terminal.
Make the GND connection between the turntable and
this unit.
The volume level is
low while playing a
record.
The turntable is connected to the jacks
other than the PHONO jacks.
Connect the turntable to the PHONO jacks.
The record is being played on a turntable
with an MC cartridge.
Use a turntable equipped with an MM cartridge.
—
The volume level
cannot be increased,
or the sound is
distorted.
The component connected to LINE 2 REC
or LINE 3 REC terminals of this unit is
turned off.
Turn on the power of the component.
—
The sound is
degraded when
listening with the
headphones
connected to the CD
player or the tape
deck connected to
this unit.
The power of this unit is turned off, or this
unit is set to the standby mode.
Turn on the power of this unit.
The sound level is
low.
The LOUDNESS control is functioning.
Set the LOUDNESS control to the FLAT position.
The input source
cannot be changed
although the INPUT
selector is rotated.
The CD DIRECT AMP switch is turned
on.
Turn off the CD DIRECT AMP switch.
Using the BASS,
TREBLE, BALANCE
and LOUDNESS
controls does not
affect the tonal
quality.
The CD DIRECT AMP switch or the
PURE DIRECT switch is turned on.
The CD DIRECT AMP switch or the PURE DIRECT
switch must be turned off to use those controls.
Problems
Possible Causes
Solutions
Refer to
page