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TM9100 Service Manual TMAA02-08 Keypad Microphone 433

9. Speak clearly into the microphone and release the PTT key when you

have finished talking.

16.2 Installation

16.2.1 Installing the Microphone

Important The keypad microphone grommet must be installed when-

ever the microphone is plugged into the microphone

socket. When installed, the grommet has two functions:

■ to prevent damage to the microphone socket when

there is movement of the microphone cord, and

■ to ensure that the control head is sealed against water,

dust and other environmental hazards.

1. Make sure the radio is turned off, then plug the keypad microphone

cord into the microphone socket on the radio control head.

Important The radio will only recognize the presence of the keypad

microphone when the radio is powered on, so that if the

microphone is plugged in after the radio has been powered

on, it will not recognize the keypad microphone. Also, if

the keypad microphone is plugged in on power up but is

later unplugged, then plugged back in, the radio will not

recognize it again until the next power cycle.

2. Slide the microphone grommet along the microphone cord and push

two adjacent corners of the grommet into the microphone socket

cavity.

3. Squeeze the grommet and push the remaining corners into position.

4. Check that the grommet is seated correctly in the cavity.

16.2.2 Installing the Microphone Clip

Install the microphone clip in the most convenient location for the radio

user. It must be within easy reach of the user, but in such a position that the

microphone PTT key cannot be inadvertently activated or jammed on.

Figure 16.1 Correct keypad microphone grommet seating

microphone

grommet

control head

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