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TROUBLESHOOTING
16
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, set this unit to the standby mode, disconnect the power cord, and contact the nearest
authorized YAMAHA dealer or service center.
General
TROUBLESHOOTING
Problem Cause Remedy
Refer to
page
This unit fails to turn
on.
The power supply cord is not connected or
the plug is not completely inserted.
Connect the power supply cord firmly.
The impedance setting is incorrect. Set the impedance to match your speakers.
7
The protection circuitry has been activated
because of a short circuit, etc.
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
8
The IMPEDANCE SELECTOR switch on
the rear panel is not set to either end.
Set the IMPEDANCE SELECTOR switch to either
end when the power of this unit is turned off.
7
This unit has been exposed to a strong
external electric shock (such as lightning
or strong static electricity).
Set this unit to the standby mode, disconnect the
power supply cord, plug it back in after 30 seconds,
then use it normally.
No sound Incorrect input or output cable
connections.
Connect the cables properly. If the problem persists,
the cables may be defective.
8
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).
11
The TAPE MONITOR function is turned
on.
Turn off the TAPE MONITOR function.
4
The SPEAKERS A/B switches are not set
properly.
Set the corresponding SPEAKERS A or B switch to
the ON position.
11
Speaker connections are not secure. Secure the connections.
8
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.
7
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
8
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.
8
Incorrect setting for the BALANCE
control.
Set the BALANCE control to the appropriate
position.
13
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.
8
A “humming” sound
can be heard.
Incorrect cable connections. Connect the audio plugs firmly. If the problem
persists, the cables may be defective.
8
No connection from the turntable to the
GND terminal.
Make the GND connection between the turntable and
this unit.
8
The volume level is
low while playing a
record.
The record is being played on a turntable
with an MC cartridge.
The turntable should be connected to this unit through
the MC head amplifier.
The volume level
cannot be increased,
or the sound is
distorted.
The component connected to the TAPE
OUT or the MD OUT terminals of this
unit is turned off.
Turn on the power of the component.
18


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