Radio control panel, function - GF82.60-P-3115-04PMU

The control buttons and switches of the function keypad in the radio (A2) are read in by the microcontroller and supplied to the central computer. The actuations of the buttons and switches are processed in the central computer and transmitted over the Media Oriented System Transport (MOST) or the Controller Area Network Bus Class B (interior) (CAN-B) in the form of a data telegram.

If the "ON" button on the combination push and rotary button is pressed, the radio (A2) switches on. In each case the volume can be regulated with the push-button rotary switch for the audio source active. The main function keys switch over to the audio source desired by the user.

If the user presses the "tone setting" function key, the following presets can be changed:

• BASE
• TREBLE
• Balance
• Fader
• Volume
• Traffic messages
• Acoustics

Using the "Mute" function button, the audio source currently being listened to is muted.

The output signal from the radio (A2) is suppressed, and the CD disk drive goes into pause mode. If the user presses the right side of the cross-shaped rocker button (cursor button), a telephone call is answered. If the user presses the left side of the cross-shaped rocker button (cursor button), a telephone call is ended.

The number block can be used for the following:

• Entering required telephone number
• Calling up or saving a radio station
• Direct entry of a radio frequency

• Selecting a CD
  • Direct entry of a CD track

The cross rocker switch (cursor button) can, for example, be used for searching in the telephone book or to carry out fixed programmed commands of the respective function level. If the user presses one of the two "Search" function keys, this function is carried out in the current function level.

CD ROM disk drive 

The radio (A2) is equipped with a CD disk drive. All sound and volume adjustments are made via the combination push and rotary button.

Brightness setting 

To be able to see the information in the display better, an infinitely adjustable brightness adjustment is possible using the cross-shaped rocker button.

The following function groups are shown in the display:

• Autostore
• Automatic station search
• Traffic information (regional)
• Select and play back track randomly (Random)
• Repeat track
• Skip empty band

User information:

• Arrival of an SMS message

Function status:

• Telephone function status active (roaming)
• Cellular phone function status active

Offboard diagnosis, STAR DIAGNOSIS (up to 30.11.04) 

The radio (A2) has its own diagnostic trouble code memory. In case of a fault memory inquiry via STAR DIAGNOSIS, the data can be read out via the interface at the central gateway control unit (N93). Output of the errors on the display unit is not possible.

Offboard diagnosis, STAR DIAGNOSIS (as of 1.12.04) 

The radio (A2) has its own diagnostic trouble code memory. In case of a fault memory inquiry via STAR DIAGNOSIS, the data can be read out via the interface at the EIS [EZS] control unit (N73). Output of the errors on the display unit is not possible.