Yamaha RP-U200 - Manual (Page 34)

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APPENDIX
Problem
Crackling noise from time to time.
Noise increases when receiving a
stereo broadcast, or the reception
mode changes from stereo to
monaural unexpectedly.
A desired station cannot be
received by the auto tuning
method.
Stereo broadcasts are noisy and
the ST indicator flashes.
There is distortion or clear
reception cannot be obtained
even when using a good quality
FM antenna.
Preset stations cannot be
selected.
Cause
Interference from the starting motor of a
nearby car.
Interference from the thermostats of a nearby
electric appliance.
Because of the characteristics of FM
broadcasts, this is limited to cases where the
transmitter is far away or the antenna signal is
weak.
Because of the characteristics of FM
broadcasts, this is limited to cases where the
transmitter is far away or the antenna signal is
weak.
Weak antenna signal.
Not tuned correctly.
There is multipath interference.
The preset memory has been erased.
What to Do
Position the FM antenna as high and as far
away from nearby roads as possible.
Use a coaxial cable for connecting the antenna.
Install a noise canceller on such an appliance.
Check the antenna connections.
Install a multi-element type FM antenna if
possible.
Tune in to the station manually.
Install an antenna suitable for the electric field
strength of your area.
Retune.
Change the position of the antenna.
Store the stations again.
When using the built-in FM tuner
Depending on some computer hardware or operating systems, all functions of this unit cannot be used.You can refer to
the following Yamaha website for details and related information.
http://www.yamaha.co.jp/audio/
Memory back-up
The memory back-up circuit prevents the setting of the input selector, the sound field program, the preset memory of
the tuner from being lost even if the AC power cord is disconnected from the AC outlet or the power is cut due to a
temporary power failure. If, however, the power is cut for more than one week, the memory may be erased. In that
case, you must make the necessary settings, and store the FM stations in memory again.