Brief Description Of Components: Notes

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The M-ASK obtains signals from the following components:

Controller
The controller delivers the signals for selecting the menus and submenus. The submenus are selected by turning and/or pushing the controller.
Telephone
The telephone delivers the signal for the radio mute circuit and the low-frequency output signal to transmit the call to the loudspeakers. The two signals are transmitted via the MOST bus. Other information can also be transmitted by the telephone.
CD changer
The CD changer (option 672 "CD changer") supplies the low-frequency output signals to actuate the output stages.

The CD changer is connected to the MOST bus.
Aerials
The aerials in the rear window supply the signals for the radio reception and for the remote control functions.

>E60: Refer to E60 AERIALS .
Telephone and GPS aerial
The telephone and GPS aerial is built into the roof-mounted aerial. The GPS aerial receives signals from GPS satellites. The signals to the GPS receiver and the navigation system are transmitted via the aerial cable to other connections.
Dynamic Stability Control (DSC)
The DSC control unit calculates the data for distance, speed and direction, e.g. for the navigation system.
Navigation DVD
Data for route planning, navigation and Points of Interest (POIs) is found on the DVD. POIs are places of significance for tourists such as hotels, petrol stations, restaurants, theatres, etc.
Wheel-speed sensors
The signals needed by the DSC control unit to calculate the distance and speed and to recognize the direction (forwards and backwards) are supplied by the wheel-speed sensors.
Steering column switch cluster (SZL)
The SZL delivers the steering angle signal for the navigation system. In the SZL there are buttons for volume and station selection as well as buttons which can be freely assigned, e.g. for navigation instructions.

The M-ASK consists of the following components:

1 DIN radio casing
The M-ASK is fitted in a 1 DIN radio casing.

For more information, refer to E60, E61, E63, E64, E87, E90 1-DIN RADIO HOUSING .
Drive
Depending on the design, the M-ASK is equipped with the following drives:
- CD drive for playback of audio CDs.
- CD-ROM drive for playback of audio CDs.
- DVD drive for loading data for the navigation system and for playback of audio CDs.
Aerial tuner
Depending on the design, the M-ASK is equipped with the following tuners:
- Single-tuner radio for reception of VHF, MW and LW radio frequencies.
- Two-tuner radio for reception of the strongest FM station. The Traffic Message Channel (TMC) receives information that is used by the navigation system to avoid areas of traffic congestion (with option 606).
For more information, refer to E60, E61, E63, E64, E87, E90 AERIAL TUNER .
M-ASK motherboard (M-ASK-H)
The M-ASK motherboard is connected to the processor board. There are memories and processors on both boards which function as individual control units. Flash coding can be used to program the control units.

For more information, refer to E60, E61, E63, E64, E87,E90 M-ASK MOTHERBOARD AND PROCESSOR BOARD .
Aerial diversity
The aerial diversity contains the aerial amplifier and switches over the aerials to FM.

For more information, refer to E60, E61, E63, E64 - AERIAL DIVERSITY .
Electric fan
An electric fan for cooling the audio output stages and the processors can be found on the back of the 1 DIN radio casing.

The M-ASK outputs the following signals:

Instrument cluster
The instrument cluster contains an LC display with variable indicator lamps to display Check Control messages. Detailed texts are displayed as check control messages in the status bar in the Central Information Display CID via the M-ASK. The instrument cluster discharges the functions of priority control for the check-control messages.
Central Information Display (CID)
The following menus can be called up on the CID:
- On-board info (with option 606 is displayed as menu navigation)
- Entertainment
- Communication
- Climate
- Settings
Audio operation
The following signals can be output via the loudspeakers:
- Audio signals
- Parking-aid (Park Distance Control PDC)
- Audible notes (jingles) e.g. gongs during the Check Control messages