Sony CDX-M770 Operation Instructions Manual page 40

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 27)
(CDX-M770), (page 27) (CDX-M670,
MDX-M690).
Automatic tuning is not possible.
• The local seek mode is set to "on."
t Set the local seek mode to "off" (page
34).
• 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 to the monaural reception mode (page
34).
A programme broadcast in stereo is heard
in monaural.
• The unit is in monaural reception mode.
t Cancel monaural reception mode (page
34).
RDS
The Seek starts after a few seconds of
listening.
The station is non-TP or has weak signal.
t Press (AF) or (TA) repeatedly until "AF
off" or "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.
• The station does not specify the programme
type.
40
DSP functions (CDX-M770 only)
No sound, or sound is too low.
The volume of the speakers may have been
automatically lowered in order to maximize
the effect of the listening position adjustment.
t Press < or , to adjust the balance. The
speaker balance can be set separately for
DSP on mode and DSP off mode (page 29).