Troubleshooting - Yamaha A-S701 Owner's Manual

Refer to the chart below if this unit does not function properly. If the problem you are experiencing is not listed below or
if the instructions below do not help, turn off this unit, disconnect the power cable, and then contact the nearest
authorized Yamaha dealer or service center.
Problem
The power cable is not connected or the
This unit fails to turn
plug is not completely inserted.
on.
The A AMP is pressed on the remote
control while this unit is turned off.
The impedance setting of the connected
speaker is too small.
The protection circuitry has been activated
because of a short circuit, etc.
There is a problem with the internal
circuitries of this unit.
The speaker wires are touching each other
This unit turns off
or shorting out against the rear panel.
suddenly and the
power indicator
blinks.
The speaker is malfunctioning.
The protection circuitry has been activated
because of excessive input or excessive
volume level.
The protection circuitry has been activated
due to excessive internal temperature.
The IMPEDANCE SELECTOR switch is
not fully slid to either position.
The IMPEDANCE SELECTOR switch is
not set to the correct position.
This unit has been exposed to a strong
external electric shock (such as lightning
or strong static electricity).
There is a problem with the internal
circuitries of this unit.
Sound is muted.
No sound.
Incorrect cable connections.

TROUBLESHOOTING

Cause
Connect the power cable firmly.
Press A (power) switch on the front panel to on.
Use speaker(s) with proper speaker impedance.
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
Disconnect the power cable and contact the nearest
authorized Yamaha dealer or service center.
Connect the speaker cables properly and press the A
(power) switch again. The INPUT indicators blink
and the volume is decreased to the lowest setting
automatically, then the INPUT indicators stop
flashing and the last input source selected lights up.
Confirm normal sound output from speakers by
increasing the volume gradually.
Replace the speaker set and press the A (power)
switch again. The INPUT indicators blink and the
volume is decreased to the lowest setting
automatically, then the INPUT indicators stop
flashing and the last input source selected lights up.
Confirm normal sound from speakers by increasing
the volume gradually.
Rotate the VOLUME control on the front panel to
decrease the volume level and then turn the power on
again.
Allow about 30 minutes for the temperature inside
this unit to decrease, rotate the VOLUME control on
the front panel to lower the volume and then turn the
power on again. Set the unit in a place where heat can
readily dissipate from the unit.
Turn the power off and slide the IMPEDANCE
SELECTOR switch all the way to the correct position.
Set the IMPEDANCE SELECTOR switch to the
position that corresponds to the impedance of your
speakers.
Turn off this unit, disconnect the power cable, plug it
back in after 30 seconds, then use the unit normally.
Disconnect the power cable and contact the nearest
authorized Yamaha dealer or service center.
Press MUTE 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.
Remedy
See
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