9-3 FWD (9440) L4-2.0L Turbo (B207R) (2009)
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Cellular Phone Microphone: Description and Operation
Microphone, Mobile Phone (634)
Location
Microphone, mobile phone (634)
Main task
The microphone converts speech into electrical impulses that are sent to the Tel 2 or 3 communication unit or Tel 1 phone unit, depending on the level of
phone equipment.
Type
Microphone with amplifier.
Connection
The microphone is supplied with power on pin 1 and sends an amplified signal on the same pin. Ground is provided on pin 3.