CD-player mode, function up to 31.5.05 with CODE (523) MB Audio 20 radio - GF82.60-P-2002SKB

Model 171.4 up to 31.5.05 with CODE (523) MB Audio 20 radio 

Fig 1: CD-Player Mode Function Chart

Courtesy of MERCEDES-BENZ USA

Schematic of the Audio 20 with code (819) 6-disk CD changer 

CD player mode 

CDs can be played via the CD disk drive in the radio (A2) or via the CD player with changer (in glove compartment) (A2/6). The CD player with changer (in glove compartment) (A2/6) has an automatic input slot for 6 CDs. The CDs are loaded centrally via an insertion slot. Each CD can be loaded and removed individually with the 6 selection buttons on the unit. The system is operated via the entry keyboard at the radio (A2).

Only 12-cm CDs can be inserted into the CD player with changer (in glove compartment) (A2/6).

The control signals of the control as well as the audio data of the CD player with changer (in the glove compartment) (A2/6) are transmitted via the Media Oriented System Transport (MOST). The signals are processed and amplified by the radio (A2).

The CD player operation is selected using the operating unit in the audio/CD menu. When an Audio CD is inserted into the input slot of the CD player with changer (in glove compartment) (A2/6) the following functions are available for the user:

• Selection of the CD slot in the changer
• Loading CD
• CD selection
• Select track
• Search forward/backward
• Current play time (of track or CD)
• Scan functions

  The music tracks are played for 8 seconds. At the end of the CD the CD player with changer (in glove compartment) (A2/6) automatically changes to the mode last set.

• Random function

  All the tracks of a CD are played according to the random principle. 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

  Alternatively one track, one CD or all CDs in the CD player with changer (in glove compartment) (A2/6) are repeated.

The following possibilities are available in the menu "Adjustments":

• Normal track function
• Repeat track
• Repeat CD
• Select a track sequence

CD title allocation, function 

Each CD contains a permanently stored table of contents (TOC entry). Thus, the radio (A2) recognizes the particular CD and can automatically name it after the one-time user allocation of the title. The table of contents (TOC record) also contains information on the number of titles on a CD and the total CD playing time.