Yamaha R-302 - Manual (Page 20)

20
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.
There is a lack of bass, and no ambience.
Sound “hums”.
Sound level is low.
The volume level is low while playing a
record.
The volume level cannot be increased, or
sound is distorted.
FM stereo reception is noisy.
There is distortion and clear reception
cannot be obtained even with a good FM
antenna.
A desired station cannot be tuned in with
the automatic tuning method.
Previously preset stations can no longer
be tuned in.
A desired station cannot be tuned in with
the automatic tuning method.
There are continuous crackling and
hissing noises.
There are buzzing and whining noises
(especially in the evening).
The remote control transmitter does not
work.
The sound is degraded when listening
with the headphones connected to the
compact disc player or cassette deck that
are connected with this unit.
Power cord is not plugged in or is not
completely inserted.
Incorrect output cord connections.
Appropriate input selector button is not
pressed.
The SPEAKERS switches are not set properly.
Speaker connections are not secure.
The protection circuit has been activated
because of short circuit etc.
The SLEEP timer functioned.
Incorrect setting of the BALANCE control.
Incorrect cord connections.
The + and – wires are connected in reverse at
this unit or speakers.
Incorrect cord connections.
No connection from the turntable to the GND
terminal.
The LOUDNESS control is functioning.
The record is being played on a turntable with
an MC cartridge.
The power to the component connected to the
REC OUT terminals of this unit is off.
Because of the characteristics of FM stereo
broadcasts, this is limited to cases where the
transmitter is too far away or the antenna input
is poor.
There is multipath interference.
The station is too weak.
The tuner has been unplugged for a long
period.
Weak signal or loose antenna connections.
Noises will result from ligtning, fluorescent
lamps, motors, thermostats and other electrical
equipment.
A television set is being used nearby.
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.
The power to this unit is off.
Firmly plug in the power cord.
Connect the cords properly. If the problem
persists, the cords may be defective.
Press the appropriate input selector button
corresponding to the input source.
Set the SPEAKERS switch that corresponds to
the speakers to be used to the ON position.
Secure the connections.
Turning the unit off and then on will reset the
protection circuit.
Cancel the SLEEP timer function.
Adjust it to the appropriate position.
Connect the cords properly. If the problem
persists, the cords may be defective.
Connect the speaker wires in the correct
phase (+ and –).
Firmly connect the audio plugs. If the problem
persists, the cords may be defective.
Make the GND connection between the
turntable and this unit.
Set the LOUDNESS control to the FLAT
position.
The player should be connected to the unit
through an MC head amplifier (available
separately).
Turn the power to the component on.
Check the antenna connections.
Try using a high quality directional FM
antenna.
Set the TUNING MODE button to the manual
tuning mode.
Adjust antenna placement to eliminate
multipath interference.
Use the manual tuning method.
Use a high quality directional FM antenna.
Repeat the presetting procedure.
Tighten the AM loop antenna connections and
rotate it for best reception.
Use the manual tuning method.
Use an outdoor antenna and a ground wire.
This will help somewhat but it is difficult to
eliminate all noise.
Relocate this unit away from the TV.
Change the position of the main unit.
Replace the batteries with new ones.
Turn the power to this unit on.
Amplifier
FM
AM
Others
Remote control
transmitter
TROUBLESHOOTING
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.
SYMPTOM CAUSE REMEDY