Sony CDX-4005 - Manual (Page 21)

21
Radio reception
Problem
Preset tuning is not possible.
Automatic tuning is not
possible.
The “ST” indication flashes.
Cause/Solution
•Memorise the correct frequency.
•The broadcast signal is too weak.
•When your car has built-in FM/AM antenna in the rear/side
glass, it is necessary to connect the power antenna control
lead (blue) or the accessory power input lead (red) to the
power terminal of the existing antenna booster. For details,
consult your dealer.
The broadcast signal is too weak.
t Use manual tuning.
•Tune in the frequency accurately.
•The broadcast signal is too weak.
t Set to the MONO mode (page 12).
If the above-mentioned solutions do not help improve the situation, consult your nearest Sony
dealer.