Sony CDX-CA680X Operating Instructions Manual page 28

Radio reception
Preset tuning is not possible.
• Store the correct frequency in the memory.
• The broadcast signal is too weak.
The stations cannot be received.
The sound is hampered by noises.
• Connect a power aerial control lead (blue) or
accessory power supply lead (red) to the
power supply lead of a car's aerial booster.
(Only when your car has built-in FM/MW/
LW aerial in the rear/side glass.)
• Check the connection of the car aerial.
• The auto aerial will not go up.
t Check the connection of the power aerial
control lead.
• Check the frequency.
• When the DSO mode is on, the sound is
sometimes hampered by noises.
t Set the DSO mode to "OFF" (page 23).
Automatic tuning is not possible.
• The local seek mode is set to "ON."
t Set the local seek mode to "OFF" (page
15).
• The broadcast signal is too weak.
t Perform manual tuning.
The "ST" indication flashes.
• Tune in the frequency accurately.
• The broadcast signal is too weak.
t Set the monaural reception mode to
"ON" (page 16).
A programme broadcast in stereo is heard
in monaural.
The unit is in monaural reception mode.
t Cancel monaural reception mode (page
16).
28
RDS
The SEEK starts after a few seconds of
listening.
The station is non-TP or has weak signal.
t Press (TA) repeatedly until "TA-OFF"
appears.
No traffic announcements.
• Activate "TA."
• The station does not broadcast any traffic
announcements despite being TP.
t Tune in another station.
PTY displays "--------."
• The current station is not an RDS station.
• RDS data has not been received.