40
Amplifier
FMAM
Others
REMOTE
CONTROLLER
Refer to the chart below when this unit does not function properly. If the problem you are experiencing is not listed below or if the
instruction below does not help, disconnect the power cord and contact your authorized YAMAHA dealer or service center.
Problem
The unit fails to turn on when the STANDBY/ON
switch is pressed, or turns into the standby
mode suddenly soon after the power is turned
on.
This unit does not work normally.
No sound or no picture.
The sound suddenly goes off.
Only one side speaker outputs the sound.
Sound “hums”.
The volume level is low while playing a record.
The volume level cannot be increased, or
sound is distorted.
No sound from the rear speakers.
No sound from the center speaker.
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 controller does not work.
The sound is degraded when listening with the
headphones connected to the compact disc
player or cassette deck that is connected with
this unit.
Cause
Power cord is not plugged in or is not completely
inserted.
There is an influence of strong external noise
(lightning, excessive static electricity, etc.) or a
misoperation on this unit while using this unit.
Incorrect output cord connections.
Appropriate input source is not selected.
Speaker connections are not secure.
The SPEAKERS switch is set to the OFF position.
The protection circuit has been activated because
of short circuit etc.
The SLEEP timer came on.
Incorrect setting of the BALANCE control.
Incorrect cord connections.
Incorrect cord connections.
No connection from the turntable to the GND
terminal.
The record is being played on a turntable with an
MC cartridge.
The component connected to the TAPE/MD OUT
terminals of this unit is turned off.
The sound output level to the rear speakers is set
to minimum.
The monaural sound source is played when
PRO LOGIC or PRO LOGIC ENHANCED is
selected.
The sound output level to the center speaker is set
to minimum.
The center channel mode is in PHANTOM mode.
Incorrect sound field program selection.
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.
This unit has been unplugged for a long period.
Weak signal or loose antenna connections.
Noises 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
fluorescent lamp etc.) is striking the remote control
sensor of the main unit.
The batteries of this remote controller are too
weak.
This unit is in the standby mode.
What to Do
Firmly plug in the power cord.
Turn this unit into the standby mode and disconnect
the AC power cord from the AC outlet. After about
30 seconds pass, connect the power and operate
this unit again.
Connect the cords properly. If the problem persists,
the cords may be defective.
Select an appropriate input source with the INPUT
selector.
Secure the connections.
Set the SPEAKERS switch to the ON position.
Turn this unit into the standby mode, and then turn
on to 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.
Firmly connect the audio plugs. If the problem
persists, the cords may be defective.
Make the GND connection between the turntable
and this unit.
The player should be connected to the unit through
the MC head amplifier.
Turn the power to the component on.
Raise the sound output level to the rear speakers.
Select another program suitable for the monaural
sound source.
Raise the sound output level to the center speaker.
Select NORMAL or WIDE.
Select the appropriate program.
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
the noises.
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.
TROUBLESHOOTING
