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If your RP-U100 does not operate as expected, check the items below.
• Troubleshooting the FM Tuner
Symptom Possible Cause Remedy
Pressing the POWER switch
does not turn on the RP-U100.
The power plug is not plugged
into the wall outlet correctly.
Insert the power plug correctly.
A speaker cable is shorted.
Switch off the power, correct
the speaker connections, then
switch on the power again.
There is no sound.
No input source is selected.
Select the source that you want
to listen to.
When using the PC input
source, be sure to select the
correct input: USB, digital, or
analog.
A connection is incorrect. Check the connections.
The sound field programs have
no effect.
The DSP is off. Switch on the DSP.
There is a humming noise.
An analog connection is incor-
rect.
Insert the analog plugs cor-
rectly.
Using the RP-U100 affects TV
reception or the performance of
other equipment.
These equipment may be situ-
ated too close to the RP-U100.
Move these equipment away
from the RP-U100.
The Presets do not work.
The preset settings are lost if
the RP-U100 is unplugged for
more than two weeks.
Reprogram the presets.
Symptom Possible Cause Remedy
A popping noise can be heard.
Interference from the ignition
system of a motorcycle or auto-
mobile is being picked up.
Adjust the angle and location of
the FM antenna to minimize the
noise. If that does not eliminate
the noise, install an outdoor FM
antenna.
Use a coaxial cable for the
antenna connection.
Stereo broadcasts are accom-
panied by an unpleasant back-
ground noise.
The antenna signal is too weak
or the signal of the station you
are receiving is weak.
Install an outdoor FM antenna.
Auto tuning cannot locate a sta-
tion.
The station is too weak.
Use a multi-element antenna.
Use manual tuning.