audio CITROEN C4 2007 Service Manual

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sound quality between the different audio sources (radio, CD, CD changer...).
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.
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, CD changer...).
The CD is ejected automatically or is not played by the player.
- 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. - The CD changer does not play MP3 CDs.
The CD is inserted upside down, is unplayable, doe s not contain any audio data or contains an audio format which the player cannot play.
The CD is protected by an anti-pirating protection system which is not recognised by the audio equipment.
The CD player sound is poor. Insert good quality CDs and store them in suitable conditions. The CD used is scratched or of poor quality.
The audio equipment settings (bass, treble, ambien ces) are unsuitable. Set the treble or bass level to 0, without selecting an ambience.
The table below groups together the answers to the most frequently asked questions concerning the MyW ay.
QUESTION SOLUTION ANSWER
FREQUENTLY ASKED QUESTIONS

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SOLUTION ANSWER
The quality of reception of the radio station listened to gradually deteriorates or the stored stations do not function (no sound, 87.5 Mhz is displayed...).
The vehicle is too far from the transmitter used by the station listened to or there is no transmitter in the geographical area th rough which the vehicle is travelling.
The environment (hills, buildings, tunnels, baseme nt car parks...) block reception, including in RDS mode.
The aerial is absent or has been damaged (for exam ple when going through a car wash or into an underground car park).
Activate the RDS function to enable the system to check whether there is a more powerful transmitter in the geographical area.
This phenomenon is normal and does not indicate a failure of the audio equipment.
Have the aerial checked by a CITROËN dealer.
Sound cut-outs of 1 to 2 seconds in radio mode.
During this brief sound cut-out, the RDS searches for any frequency permitting better reception of the station. Deactivate the RDS function if the phenomenon is too frequent and always on the same route.
With the engine off, the audio equipment switches off after a few minutes of use.
When the engine is switched off, the audio equipme nt operating time depends on the battery charge. The switch-off is normal: the audio equipment switches to economy mode and switches off to prevent discharging of the vehicle's battery.
Start the vehicle's engine to increase the battery charge.