Yamaha RX-497 Owner's Manual page 40

The power of this unit is turned off, or this
The sound is
unit is set to the standby mode.
degraded when
listening with the
headphones
connected to the CD
player or the tape
deck connected to
this unit.
The LOUDNESS control is functioning.
The sound level is
low.
The PURE DIRECT button is turned on.
Using the BASS,
TREBLE, BALANCE
and LOUDNESS
controls does not
affect the tonal
quality.
■ Tuner
Problem
The particular characteristics of the FM
FM stereo
stereo broadcasts being received may
reception is
cause this problem when the transmitter is
noisy.
too far away or the antenna input is poor.
There is multipath interference.
There is
distortion, and
clear reception
cannot be
obtained even
with a good FM
antenna.
FM
The signal is too weak.
The desired
station cannot
be tuned in
with the
automatic
tuning method.
This unit has been disconnected for a long
Previously
period.
preset stations
can no longer
be tuned in.
The signal is weak or the antenna
The desired
connections are loose.
station cannot
be tuned in
with the
automatic
tuning method.
The noises may result from lightning,
AM There are
fluorescent lamps, motors, thermostats or
continuous
other electrical equipment.
crackling and
hissing noises.
A TV set is being used nearby.
There are
buzzing and
whining noises.
Turn on the power of this unit.
Set the LOUDNESS control to the FLAT position.
The PURE DIRECT button must be turned off to use
those controls.
Cause
Check the antenna connections.
Try using a high-quality directional FM antenna.
Try using the manual tuning method.
Adjust the antenna position to eliminate the multipath
interference.
Try using a high-quality directional FM antenna.
Try using the manual tuning method.
Preset the stations again.
Tighten the AM loop antenna connections and orient
it for the best reception.
Try using the manual tuning method.
Try using an outdoor antenna and a ground wire.
This will help somewhat, but it is difficult to
eliminate all noise.
Move this unit away from the TV set.
TROUBLESHOOTING
Remedy
14
16
16
See
page
12
21
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12
21
22
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21
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37