Yamaha RX-V3900 Bedienungsanleitung Seite 121

■ 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.
There are continuous
crackling and hissing
AM
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.
Supplied AM loop antenna is not
connected.
Noises 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 it for the best reception.
Use the manual tuning method.
Connect the AM loop antenna correctly even
if you use an outdoor antenna.
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
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