RDS Stereo Radio Tuner
21
Installa
tion manual
4 Troubleshooting
PROBLEM
CAUSE
SOLUTION
The Tuner does not switch on
No power
Check the 27 Vdc voltage on
the green terminal
The blue backlighting does
not light up when any of the
keys are pressed
Defective tuner
Replace
Tuner ON, backlighting
working but no sound
Amplifiers OFF or distant
Go to the room where the
amplifiers are and switch them
on
When a station has been
tuned, the green LED does
not light up
The antenna wire has not
been extended
For best reception keep the
antenna wire straight and if
possible vertical
The signal received is
extremely weak
Use F500N connected to a
coaxial antenna system
The Radio Tuner is in a well
shielded room (cellars, behind
heavily reinforced concrete
structures)
When a station has been
tuned, the red LED does not
light up
The antenna wire has not
been extended
For better reception keep the
antenna wire straight and if
possible vertical
The tuned station does not
transmit in stereo
The signal received is weak for
good stereo reception
Use F500N connected to a
coaxial antenna system
The Radio Tuner is in a well
shielded room (cellars, behind
heavily reinforced concrete
structures)
