Sony CDX-C90 Operating Instructions Manual page 65

Radio reception
Problem
Preset tuning is not possible.
Automatic tuning is not
possible.
The "ST" indication flashes.
Interference occurs during FM
reception.
DSP functions
Problem
No sound, or sound is too low.
Cause/Solution
•Memorize the correct frequency.
•The broadcast signal is too weak.
The broadcast signal is too weak.
n Use manual tuning.
•Tune in the frequency accurately.
•The broadcast signal is too weak.
n Set to the monaural mode (see page 37).
The Wide mode is selected.
n Set to Narrow or Auto mode (see page 39).
Cause/Solution
The volume of the rear speakers may have been
automatically lowered in order to maximize the effect of the
listening position adjustment.
n Adjust the balance.
The speaker balance can be set separately for the DSP
Sound Tuning mode (see page 53).
EN
65
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