GF82.60-P-2002PJB CD-Player Mode, Function

GF82.60-P-2002PJB CD-player Mode, Function

MODEL 203.0 /2 /7 as of 1.6.05
- with CODE (529) HIGH Class Japan
- up to model year 08/YoM 07

After switching on the COMAND operating, display and controller unit (A40/3), the CD player with changer (in glove compartment) (A2/6) scans the CDs as soon as the user inserts a CD magazine, i.e. the player reads in the available CDs. After scanning the magazine, CD 1 or the next available CD is loaded. Each CD includes a permanently stored table of contents (TOC record). The CD player with changer (in glove compartment) (A2/6) reads the data in this table of contents. As a result, the COMAND operating, display and controller unit (A40/3) clearly 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 table of contents (TOC record) also contains information on the number of titles on a CD and the total CD playing time.

The CD player with changer (in glove compartment) (A2/6) is a 6-disk CD player and is located in the glove compartment. It is connected to the Media Oriented System Transport (MOST) and is operated using the COMAND operating, display and controller unit (A40/3). Only valid audio CDs can be played.
The control signals and audio data of the CD player with changer (in glove compartment) (A2/6) are sent digitally via the MOST to the COMAND operating, display and controller unit (A40/3). The audio signals are then amplified. An audio signal amplifier integrated in the audio gateway control unit (N93/1) performs the final amplification of the audio signals. Following the final amplification, the audio signals are output directly via the vehicle speakers.

Data CDs are not recognized when the CD player scans the CD magazine. The CD player detects that the magazine slot is occupied (only valid CD formats are recognized), but the display shows that the magazine is empty when the user tries to select a CD.

The following functions are available:
- Change magazine
- Select CD
- Track skip
- Search CD and relative time of played CD
- "Scan" function
- "Random" function
- "Repeat" function
- Stop mode
- Pause mode

Stop mode/Pause mode
The motor for the CD player with changer (in glove compartment) (A2/6) is switched off in the respective mode. This keeps the power consumption low. If the user quits the CD mode, the CD player with changer (in glove compartment) (A2/6) continues scanning. The COMAND operating, display and controller unit (A40/3) is informed about the contents of the CD magazine once the scan is complete. Only the CD playback is interrupted by traffic announcements and information provided by the navigation system. The playback continues at the same place it was paused at the end of the traffic and navigation messages.

Playback of an audio CD in MP3 format
The designation "MP3" is an acronym for MPEG 1 Audio Layer 3 and describes an audio compression standard, which permits the compression of digital music signals to approx. 8 % of the original data size. This is done with almost no audible difference to the original signal (audio CD). It is also possible to play back audio CD in MP3 format in addition to conventional audio CDs in the CD player with changer (in glove compartment) (A2/6). While doing so, a conventional audio CD is emulated (simulated).

Diagnosis function
The CD player with changer (in glove compartment) (A2/6) features a diagnosis mode so that the MOST components can be tested and any faults can be located during installation and so that any faults that occur during operation can be reproduced. The CD player with changer (in glove compartment) (A2/6) remains operational during diagnosis.

Device identification
The following data is stored for device identification purposes:
- A = MB part number
- B = Hardware status (calendar week/year)
- C = Software status (calendar week/year)
- D = Supplier identification (Alpine. 32)
- D = Diagnosis recognition (diagnosis software status)
- E = Production date (YY.MM.DD)

Fault memory:
Any occurring faults are detected and stored by the CD player with changer (in glove compartment) (A2/6). The memory contents remain stored even when the COMAND operating, display and controller unit (A40/3) is switched off and the voltage supply is disconnected. The fault memory must be erased separately.

A distinction is made between faults that still exist (e.g. in the hardware) and faults that no longer exist (faults which occurred for a short time).

Fault information/freeze frame data
- Type of fault
- Existing faults
- Frequency of fault occurrence