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.







Wiring diagram, UHP/TEL1







Wiring diagram, BTN/UHP







Wiring diagram, OnStar