CD-player mode, function

A1

N80

N93

CAN-B

N93/1

Central interface for MOST and
CAN B

A35/11

A2/6

Operating unit

B25/6

Vehicle speakers

CC drive

Rear window antennas

 (FM1, TV1, RCL)

 (AM)

 (FM2, TV2)

 (FM3, TV3)

 (FM4, TV4)

A67b1

A2/5

A2/49

MOST

ZF

RF

CAN-C

MOST

S93/2

Audio signal processing and final amplification

Multistandard CD-ROM, DVD drive

Navigation processor

A2/56

A34

MOST

MOST

MOST

Radio tuner

Central diagnosis interface

N112

A2/64

Multifunction steering wheel

Radio control panel and navigation unit (A2/56) with code (813) Voice control system (VCS) and code (819) 6-disc CD changer

CAN-B Interior compartment CAN

CAN-C Engine compartment CAN

MOST Media Oriented System Transport

AM Amplitude modulation

FM Frequency modulation

RCL Radio remote control central locking

RF Radio frequency

ZF Intermediate frequency

A67b1 Hands-free system microphone group

B25/6 Sound amplifier microphone

N80 Steering column module

N93 Central gateway control unit

N93/1 Audio gateway control unit

N112 Telecommunications control unit

S93/2 VCS switch

A1 Instrument cluster

A2/5 GPS antenna splitter

A2/6 CD changer

A2/49 Telephone and GPS roof antenna

A2/56 Radio control panel and navigation unit

A2/64 Left antenna amplifier module

A34 Telephone handset

A35/11 Voice control system control unit

CD player mode

Audio CDs can be played with the multistandard drive of the radio control panel and navigation unit (A2/56). With code (8199) 6-disc CD changer, audio CDs can be played with the CD changer (A2/6) which is located in the center console recess below the radio control panel and navigation unit (A2/56).

The system can be operated using the keypad on the radio control panel and navigation unit (A2/56), the multifunction steering wheel or by means of the voice control system (VCS).

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 Only 12 cm CDs may be inserted into the CD changer (A2/6); it is not possible to use an 8 cm CD adapter. Up to 6 CDs can be loaded.

The control signals of the radio control panel and navigation unit (A2/56) as well as the audio data of the CD changer (A2/6) are transmitted via the Media Oriented System Transport (MOST). The audio gateway control unit (N93/1) takes over signal processing and amplification.

 If the vehicle is equipped with the audio gateway control unit (N93/1) and Code (810) Sound System, the radio control panel and navigation unit (A2/56) must be coded accordingly using STAR DIAGNOSIS as otherwise problems can occur with the playback of audio signals.

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CD player mode is initiated at the radio control panel and navigation unit (A2/56) in the Audio/CD menu. After an audio CD has been inserted into the automatic slot of the radio control panel and navigation unit (A2/56) or the CD changer (A2/6) the following functions are available to the user:

 Selecting the CD slot in the CD changer (A2/6) and loading the CD

 CD selection

 Track selection

 Forwards/backwards search

 Current playtime (of track or CD)

 Scan functions: the music tracks are played for 8 seconds. At the end of the CD the CD changer (A2/6) automatically changes into the Play Forward mode or into the mode last set.

 Random function: all tracks on a CD are played randomly. Once all the tracks of a CD have been played once, the next CD is automatically loaded and the random function continues. The random function is repeated until it is deactivated.

 Repeat function: either a track, a CD or the entire CD magazine is repeated.

There following are possible in the "Adjustments" menu:

 Normal track function

 Repeat track

 Repeat CD

 Select track mix

CD title allocation, function

Every CD has a permanently stored Table of Contents (TOC) entry. As a result, the radio control panel and navigation unit (A2/56) recognizes the particular CD, and is able to automatically name it after the one-time user allocation of the title (even if the CD is subsequently inserted in another CD magazine). The TOC record additionally contains information regarding the number of titles on a CD and the CD's total playing time.