CD player with changer, function - GF82.64-P-3113-02P

The CD player with changer (in glove compartment) (A2/6) is controlled via the Digital Data Bus (D2B), dependent on the vehicle equipment, by the following components:

• Radio (A2)
• COMAND operating, display and control unit (A40/3)

The CD player with changer (in glove compartment) (A2/6) transmits messages for the following operating states:

• No magazine in CD changer
• Magazine occupation (music CDs only)
• Number of current CD
• Number of current title
• List of occupied CDs
• Number of titles per CD
• Current operating condition (play, pause, etc.)

The messages are sent to D2B and interpreted by the radio (A2) or the COMAND operating, display and control unit (A40/3).

CD playback 

The audio data is stored digitally on the CD.- In the CD player with changer (in glove compartment) (A2/6) the audio CD is driven by a motor. The laser-optical device scans the side of the rotating CD with no label without touching it and converts the digital-optical signals into electric signals. Minor intermittent faults in the laser optical system, resulting from scratches or contamination on the audio CD, are subsequently compensated for.

The electric signals in the CD changer are then decoded and transmitted via the D2B, depending upon the vehicle's equipment specification, to the COMAND operating, display and control unit (A40/3n1), the radio (A2) or the sound amplifier (A2/13).