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Wake-up, function - GF82.00-P-2001RA

MODEL 230 as of 1.6.04 

except CODE (498) Japanese version 

except CODE (494a) USA version 

MODEL 230 as of 1.7.04 

with CODE (494a) USA version 

except CODE (498) Japanese version 

Wake-up 

The MOST ring can be activated by either turning the transmitter key (A1/8) to the "Circuit 15R ON" position (provided that the system was not  switched off before removing the transmitter key (A1/8)) or via the "ON" button of the radio (A2) or the COMAND operating, display and control unit (A40/3). The audio gateway control unit (N93/1) then transmits a wake-up signal to all components. After the MOST ring has been activated by a wake-up call, the components reply via the MOST ring. In order to do this, the audio gateway control unit (N93/1) transmits a light signal via the MOST ring. If a component fails to react, it can also be awakened optically  .

This means that a defective wake-up line does not cause the MOST ring to fail. If the MOST ring has been interrupted and the audio gateway control unit (N93/1) does not receive a response within a certain time, the audio gateway control unit (N93/1) makes several wake-up attempts.

IMPORTANT If a telephone call is received and the transmitter key (A1/8) is inserted, the Universal Portable CTEL Interface (UPCI [UHI]) control unit (N123/1) transmits a message via the MOST ring to the audio gateway control unit (N93/1) to activate the speaker system for voice output.

Wake-up diagnosis 

The diagnostic wake-up can only be actuated when the optical ring cannot be activated due to an error.

In order to do this, the audio gateway control unit (N93/1) receives a request from STAR DIAGNOSIS to transmit a diagnosis wake-up to the components. This signal differs from the wake-up signal on account of its distinctly greater duration. The components react in sequence by transmitting a signal on the wake-up line.

If a component fails to react, the audio gateway control unit (N93/1) and therefore also STAR DIAGNOSIS is aware that this component could not be awakened. This means that only the wake-up line to the component needs to be checked, and if necessary the component itself and its voltage supply.

If all components reply to the audio gateway control unit (N93/1), their voltage supplies are correct.

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