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Volume/tone adjustments, function - GF82.60-P-2003LEJ

MODEL 216 with CODE (529) HIGH Class Japan as of model year 09/YoM 08 

MODEL 221 with CODE (529) HIGH Class Japan as of model year 09/YoM 08 

Function requirements 

General 

All volume and sound settings are made using the front central operating unit (A40/9) or the multifunction steering wheel (MFL). This is done either by the user or automatically by the dynamic range optimization (DRO) which adapts the level of noise in the vehicle interior.

The volume and sound setting function can be conducted as follows:

Operating instructions 

The volume/tone settings can be made using the following components:

Function sequence, general volume setting via right multifunction steering wheel button group 

Pressing the + and - buttons for setting specific functions and volume control enables the volume for the desired audio function to be increased or reduced.

The control signals are forwarded via the following path to the audio tuner control unit (N93/1):

IMPORTANT The sound settings are shown on the COMAND display (A40/8). Predefined settings can be selected and reset to the manufacturer default setting via the system settings.

Function sequence for general volume adjustment and general, extended sound settings via the front central operating unit 

The volume control (A40/9r1) is located on the front central operating unit. The volume control enables manual adjustments to be made to the volume and tone settings for each audio source. The required tone settings can be performed via the "Sound" menu. They can be set separately for each function (e.g. CD, radio reception, traffic announcements). The control signals are sent via the telematics CAN to the COMAND control unit. The desired settings are then forwarded by the COMAND control unit via the MOST to the audio tuner control unit. If the tone emphasis is changed (balance, fader) the volume relationship between the individual speakers changes relative to each other.

Function sequence for dynamic range optimization 

The dynamic range optimization can be used to adjust the volume to the noise level prevalent inside the vehicle. The signal input at the sound amplifier microphone (B25/6) is used as a relationship indicator when doing this. This procedure will run automatically. After evaluating the relationship indicator, the audio output is matched to the noise level in the vehicle interior. The evaluated relationship indicator is sent via the following path to the audio tuner control unit:

The audio signals on model 221 are sent by the audio tuner control unit via direct lines to the following speakers:

The audio signals are emitted on model 216 by the audio tuner control unit via direct lines to the following speakers:

REFER TO SYSTEM WIRING DIAGRAMS Electrical function diagram for volume/sound settings, function Model 216 PE82.60-P-2059-97CAB
Model 221 PE82.60-P-2059-97SAB
  COMAND controller unit, component description A40/3 GF82.85-P-3136LEJ
  COMAND display, component description A40/8 GF54.30-P-6110LE
  Front central operating unit, component description A40/9 GF54.21-P-4500LE
  Steering column module, component description N80 GF54.21-P-6050LE
  Central gateway control unit, component description N93 GF54.21-P-4170LE
  Audio tuner control unit, component description N93/1
Model 221
Except code (810) Sound system		 GF82.62-P-3132LE 
N93/1 With code (810) Sound system GF82.62-P-3132LES 
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