18
SYMPTOM
The unit fails to turn on when the POWER
switch is pressed.
No sound.
The sound suddenly goes off.
Only one side speaker outputs the sound.
Sound “hums”.
No sound from the rear speakers.
No sound from the center speaker.
The remote control transmitter does not
work.
The distance or range within which the
remote control transmitter can be used
decreases.
The sound is degraded when monitoring
is performed by using the headphones
connected to the compact disc player or
cassette deck which are connected with
this unit.
CAUSE
Power cord is not plugged in or is not
completely inserted.
Incorrect output cord connections.
The MUTING switch is ON.
The protection circuit has activated because
of short circuit etc.
Incorrect cord connections.
Incorrect cord connections.
The rear effect sound output level is set to 0.
The monaural sound source is played in the
DOLBY PRO LOGIC or ENHANCED.
The center sound output level is set to 0.
The center mode is in the PHANTOM.
Incorrect sound field program selection.
No sound field program is selected.
Direct sunlight or lighting (of an inverter type
of flourescent lamp etc.) is striking the
remote control sensor of the main unit.
The batteries of this remote control
transmitter are too weak.
Power cord of this unit is not plugged.
REMEDY
Firmly plug in the power cord.
Connect the cords properly. If the problem
persists, the cords may be defective.
First, turn the volume control to the full left.
Then, turn the MUTING switch off with the
remote control transmitter and adjust the
volume.
Turning the unit off and then on will reset the
protection circuit.
Connect the cords properly. If the problem
persists, the cords may be defective.
Firmly connect the audio plugs. If the
problem persists, the cords may be
defective.
Turn up the sound output level with the
REAR LEVEL keys.
Select another program suitable for the
monaural sound source.
Turn up the sound output level with the
CENTER LEVEL keys.
Select the NORMAL or WIDE.
Select an appropriate program.
Change position of the main unit.
Replace the batteries with new ones.
Plug in the power cord.
If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and
contact your authorized YAMAHA dealer or service center for help.
TROUBLESHOOTING
