CITROËN Grand C4 Picasso Owner's Handbook Manual page 273

FREQUENTLY ASKED QUESTIONS
The table below groups together the answers to the most frequently asked questions.
QUESTION
There is a difference in
sound quality between
the different audio
sources (radio, CD...).
The CD is ejected
automatically or is not
played by the player.
The CD player sound is
poor.
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For optimum sound quality, the audio settings (Volume, Bass, Treble,
Ambience, Loudness) can be adapted to the different sound sources,
which may result in audible differences when changing source (radio,
CD...).
The CD is inserted upside down, is unplayable, does not contain any
audio data or contains an audio format which the player cannot play.
The CD used is scratched or of poor quality.
The audio equipment settings (bass, treble, ambiences) are unsuitable.
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ANSWER SOLUTION
Check that the audio settings (Volume, Bass,
Treble, Ambience, Loudness) are adapted to
the sources listened to. It is advisable to set
the AUDIO functions (Bass, Treble, Front-Rear
Balance, Left-Right Balance) to the middle
position, select the musical ambience "None" and
set the loudness correction to the "Active" position
in CD mode or to the "Inactive" position in radio
mode.
The CD is protected by an anti-pirating protection
system which is not recognised by the audio
equipment.
- Check that the CD is inserted in the player the
right way up.
- Check the condition of the CD: the CD cannot
be played if it is too damaged.
- Check the content in the case of a recorded
CD: consult the advice in the Audio section.
- The audio equipment's CD player does not
play DVDs.
- Due to inadequate quality, certain recorded
CDs will not be played by the audio system.
Insert good quality CDs and store them in suitable
conditions.
Set the treble or bass level to 0, without selecting
an ambience.
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