Data Expansion Head Enhanced Radio-To-Fist Microphone; Operation; Making Connections; Removing The Existing Coiled Cord Cable - Motorola MTM800 Installation Manual

INSTALLATION

Data Expansion Head Enhanced Radio-to-Fist Microphone

The GMKN4072 Connecting Cable replaces the existing coiled cord cable of the fist microphone
(Motorola P/N: GMMN4063).

Operation

The crimped wires of the cable have to be connected into the 16-pin Accessory Connector
(delivered with speaker GMSN4066) and than plugged into the 20-pin connector on the rear side of
the radio. The other end has a connector which fits into the fist microphone's housing.

Making Connections

First connect the exposed four wires to the 16-pin Accessory Connector as shown in Figure 1 and
then plug the connector block into the 20-pin accessory socket on the rear side of the radio. The
connector block plugs into the center of the 20-pin accessory connector (four outside pins do not
connect).

Removing the Existing Coiled Cord Cable

1. Rotate the locking collar at the base of the microphone in a counterclockwise direction until it
stops.
2. Pull the cord out and away from the base of the of the microphone.
Install the new coiled cord GMKN4072 in a reverse order of removal.
Part Number: GMKN4072
Length: 65 cm (2.2 feet)
1
2
to Accessory
Connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Figure 35 Pin Assignment of Cable from Accessory Connector to Microphone Housing
MTM800 Enhanced Mobile Terminal Installation Manual
3 5 7 9 1 1 1 3 1 5
4 6 8 1 0 1 2 1 4 1 6
nc
MIC_AUDIO (blue)
PTT (white)
nc
nc
nc
GND (black)
nc
nc
nc
nc
nc
nc
HOOK (red)
nc
nc
6 5 c m ( 2 . 2 f e e t )
8 7 6 5 4 3 2 1
to Microphone
Housing
1 nc
2 nc
3 PTT (white)
4 MIC_AUDIO (blue)
5 GND (black)
6 HOOK (red)
7 nc
8 nc
73