Modular control system (MCS), function - GF82.85-P-0011GI

MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357) Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE (819) 6-disk CD changer in trunk with CODE (491) U.S. version 

The following systems can be operated centrally with the aid of the radio and navigation unit (A2/56)  :

• Cassette deck 
• Radio 
• Single CD player and CD player with changer  (optional)
• Sound system  (optional)
• Navigation  (optional)
• Telephone  (optional)
  Fig 1: Identifying Radio And Navigation Unit

  
  Fig 2: MCS System Block Diagram

  

MCS system 

The radio and navigation unit (A2/56)  is the central component of the MCS system . It has a video-capable 5" active matrix TFT display  for indicating information such as control menus and map data for navigation. Actuation is accomplished in operating modes NTSC  (US standard) PAL  (ECE standard). It is operated with fixed function keys and a rotary knob, a joystick  as well as with menu-guidance on the display.

The basic version of the radio and navigation unit (A2/56)  is equipped with

• a radio reception unit,
• a compact cassette player and
• a speed-dependent volume control.

Diagnostic interface 

To read out actual values and DTC's of the MCS and components connected via the digital data bus ( D2B  ) diagnosis with the hand-held tester is possible via a K-line.

MCS bus system 

The digital components of the radio and navigation unit (A2/56)  are interlinked via the digital data bus ( D2B  ). Control data, audio signals and other information are transmitted between the various system components via the digital data bus ( D2B  ) Since some of the individual components operate with various data formats or place different requirements on the transmission speed and transmission security, various bus systems are installed.