Yamaha RX-V663 Bedienungsanleitung Seite 115

■ Tuner (FM/AM)
Problem
FM stereo reception is
noisy.
There is distortion, and
clear reception cannot be
obtained even with a
FM
good FM antenna.
The desired station
cannot be tuned into with
the automatic tuning
method.
Previously preset
stations can no longer be
tuned into.
The desired station
cannot be tuned into with
the automatic tuning
method.
AM There are continuous
crackling and hissing
noises.
There are buzzing and
whining noises.
Cause
The characteristics of FM stereo
broadcasts may cause this problem
when the transmitter is too far away or
the antenna input is poor.
There is multi-path interference.
The signal is too weak.
This unit has been disconnected for a
long period.
The signal is weak or the antenna
connections are loose.
Noise can result from lightning,
fluorescent lamps, motors, thermostats
and other electrical equipment.
A TV set is being used nearby.
Remedy
Check the antenna connections.
Try using a high-quality directional FM
antenna.
Use the manual tuning method.
Adjust the antenna position to eliminate multi-
path interference.
Use a high-quality directional FM antenna.
Use the manual tuning method.
Preset the stations again.
Tighten the AM loop antenna connections and
orient the antenna for the 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.
Move this unit away from the TV set.
Troubleshooting
See
page
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113
En