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The table below groups together the answers to the most frequently asked questions concerning the RD4 audio equipment and the RT4 audio/telephone.
QUESTION SOLUTION RESPONSE
There is a difference in 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.
FREQUENTLY ASKED QUESTIONS
The CD player sound is poor. The CD used is scratched or of poor quality. Insert good quality CDs and store them in suitable conditions.
The audio equipment settings (bass, treble, ambien ces) are unsuitable. Set the treble or bass level to 0, without selecting an ambience.

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01 FIRST STEPS
1. On/Off and volume adjustment.
2. CD eject.
3. Selection of the screen display mode.
4. Selection of the source: radio, CD and CD changer.
5. Selection of the FM1, FM2, FMast and AM wavebands .
6. Setting the audio options: front/rear balance, left/right balance, loudness, sound ambiences.
7. Displaying of the list of local stations, of the tracks on the CD or of the MP3 directories.
8. Abandon current operation.
9. T A ( T r a f fi c A n n o u n c e m e n t ) f u n c t i o n o n / o f f . Long press: access to the PTY (TYpes of radio Programme) mode.
10. C o n fi r m a t i o n .
11. Automatic search for a lower/higher frequency. Selection of previous/next CD or MP3 track.
12. Selection of a lower/higher radio frequency. Selection of the previous/next CD. Selection of the previous/next MP3 directory.
13. Displaying of the general menu.
14. Buttons 1 to 6: Selection of a stored radio station. Selection of a CD in the CD changer. Long press: storing of a station.
15. The DARK button changes the display on the screen to improve driving comfort at night. 1st press: lighting of the top banner only. 2nd press: black screen display. 3rd press: return to the standard display.

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Insert the CDs in the changer one by one. Press the SOURCE button several times in succession and select CD CHANGER.
Press one of the buttons on the numeric keypad to select the corresponding CD.
Press one of the buttons to select a track on the CD. Press and hold one of the buttons for fast forwards or backwards play.
Insert circular compact discs only. Some anti-pirating systems, on original discs or CDs copied using a personal recorder, may cause faults w h i c h a r e n o r e fl e c t i o n o n t h e q u a l i t y o f t h e o r i g i n a l player. Without pressing the EJECT button, insert a CD in the player, play begins automatically.
To play a disc which has already been inserted, press the SOURCE button several times in succession and select CD.
Press one of the buttons to select a track on the CD. Press the LIST REFRESH button to display the list of tracks on the CD.
CD CHANGER
PLAYING A CD (NOT MP3 COMPATIBLE)
CD
PLAYING A CD

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RADIO: selection of the next stored station. CD CHANGER: selection of the next CD. Selection of the next item on a menu. MP3: selection of the next directory.
RADIO: selection of the previous stored station. CD CHANGER: selection of the previous CD. Selection of the previous item on a menu. MP3: selection of the previous directory.
RADIO: automatic search for a higher frequency. CD/CD CHANGER/MP3: selection of the next track. CD/CD CHANGER: continuous press: fast forwards play. Selection of the previous item.
RADIO: automatic search for a lower frequency. CD/CD CHANGER/MP3: selection of the previous track. CD/CD CHANGER: continuous press: fast backwards play. Selection of the next item.
Volume increase.
Volume decrease.
CONTROL SHORT-CUTS
Mute: by pressing the volume increase and decrease buttons simultaneously.
The sound is restored by pressing one of the two volume buttons.
- Change of sound source. - C o n fi r m a t i o n o f a s e l e c t i o n . - Pick up/Hang up the telephone. - Press for more than 2 seconds: access to the telephone menu.
STEERING WHEEL CONTROLS

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STATUS OF FUNCTIONS
functions activated or deactivated AUDIO FUNCTIONS
DISPLAY FLOW CHART monochrome C
* The parameters vary according to vehicle (refer to the "Operation warning lights" chapter).
WARNING LOG
diagnostics
TRIP COMPUTER
FM BAND PREFERENCES
alternative frequencies (RDS)
activate/deactivate
regional mode (REG)
activate/deactivate
radio-text information (RDTXT)
activate/deactivate
AUDIO CD PREFERENCES
CD changer repeat (RPT)
activate/deactivate
track random play (RDM)
activate/deactivate
ENTER DISTANCE TO DESTINATION
distance: x km
PERSONALISATION-CONFIGURATION
DEFINE THE VEHICLE PARAMETERS *
CHOICE OF LANGUAGE
TELEPHONE
CONSULTING DIRECTORIES **
telephone directory
call log
services directory
customer contact centre
breakdown call
emergency call
DISPLAY CONFIGURATION
video brightness adjustment
normal video
inverse video
brightness (- +) adjustment
date and time adjustment
day/month/year adjustment
hour/minute adjustment
choice of 12 h/24 h mode
choice of units
l/100 km - mpg - km/l
°Celsius/°Fahrenheit
** According to compatibility of Bluetooth telephone and service contract.
MANAGEMENT OF A COMMUNICATION
switch **
terminate the current call
secret mode
activate/deactivate
CONFIGURATION
deletion of a match
list of matches
consulting matches
list of matches
choice of a mobile to connect
list of mobiles