CLK 320 (209.365) V6-3.2L (112.955) (2004)
CD Changer: Description and Operation
GF82.64-P-3113-02QMJ CD Player With Changer, Function
GF82.64-P-3113-02QMJ CD Player With Changer, Function
- with CODE (819) 6-disk CD changer
- with CODE (498) Japan version
Controlling CD player
The CD player with changer (in glove compartment) (A2/6) is controlled via the Media Oriented System Transport (MOST), 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) generates messages for the following operating states:
^
No magazine in CD changer
^
Magazine occupation (audio CDs only)
^
Number of current CD
^
Number of current title
^
List of occupied CD insertion slots
^
Number of titles per CD
^
Current operating state (playback, pause, etc.)
The messages are placed on the MOST and interpreted by 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 CDs are driven by a motor, the
unprinted side of the rotating audio CD is scanned by the laser-optic device without contacting and the digital optical signals are converted into electrical
signals. Small gaps in the data stream of the laser-optical device (e.g. due to scratches, dirt) are later interpolated and thereby compensated.
The electric signals are then decoded in the CD player with changer (in glove compartment (A2/6) and transmitted via the MOST, depending upon the
vehicle equipment, to the audio gateway control unit (N93/1) or the sound amplifier (A2/13).