Accessory; Overview; Description; Operation - Motorola GTX 2000 Service Manual

Overview

The remote speaker microphone is an accessory avail-
able with the GTX/GTX LTR/LTS 2000 portable
radios. This section provides a general description of
the remote speaker microphone and describes the
operation, handling precautions, and maintenance of
this accessory.

Description

Model HMN9030 Remote Speaker Microphone
includes a speaker, a microphone, a push-to-talk (PTT)
switch and associated circuitry. A cable, terminated
with a special plug, is provided for attaching to the
accessory connector on the portable radio.
When the remote speaker microphone is attached to
the radio, the speaker in the radio is disabled, and
receiver audio is connected to the accessory speaker.
Similarly, the accessory microphone is connected to the
transmitter, and the accessory PTT switch can now
control the PTT function in the radio. The radio micro-
phone and PTT switch are still operational, but you can
listen to the radio only through the accessory speaker.
IMPORTANT
Observe safety information in the radio
operating instructions.

Operation

1. Attach the microphoneÕs accessory connector
to the accessory connector on top of the radio.
2. While listening to the accessory speaker, turn
the radio on.
3. Operate radio according to operating instruc-
tions supplied with the radio.
NOTE
The microphone will perform best if it is
worn as shown in Figure 3-1.

Handling Precautions

To avoid damage to circuits, observe the following
handling, shipping, and servicing precautions.
June 1999
Figure 3-1. Ideal Microphone Position
¥ Prior to and while servicing a remote speaker
microphone, particularly after moving within
the service area, momentarily place both hands
on a bare metal, earth-grounded surface. This
will discharge any static charge which may
have accumulated on the person doing the ser-
vice.
¥ Whenever possible, avoid touching any electri-
cally conductive part of the unit with your
hands.
Wearing a conductive wrist strap (Motor-
ola No. RSX-4015A) will minimize static
buildup during servicing.
While wearing a conductive wrist strap,
be careful near high voltage sources. The
good ground provided by the wrist strap
will also increase the danger of lethal
shock from accidentally touching high
voltage sources.
¥ When servicing a unit, avoid carpeted areas, dry
environments, and certain types of clothing
68P02945C75-A
Section 3

Accessory

NOTE
WARNING
3-1