Control Head Description; Front Panel Assembly; Keypads; Lcd Assembly - Tait TM9100 Service Manual

2.1.2 Control Head
The control head can be divided into the following main areas:
Overview
The circled numbers in this section refer to the items in
page
The front panel assembly
Front Panel
Assembly
with an integrated transparent light pipe element for the radio
a transparent lens which cannot be replaced, a cloth membrane which is
fixed to the speaker grille, and a foam seal inside a rectangular LCD recess
behind the lens. A label
front panel assembly with self-adhesive coating and can be replaced for
rebranding purposes.
Three clips on the rear side of the front panel assembly snap onto the space-
frame to hold the keypads
1!
bosses to fasten the control-head board
The knob for the volume-control potentiometer
Knob for
Volume-Control
the volume-control potentiometer, which is soldered to the control-head
Potentiometer
board
The main keypad

Keypads

power keypad
The rear sides of these keypads connect directly to the relevant contacts on
the control-head board
The graphical-display LCD assembly

LCD Assembly

rectangular recess of the front panel assembly
attached to the rear of the LCD with self-adhesive coating. The LCD
assembly has a loom, which runs through a slot in the space-frame
connects to a connector on the rear side of the control-head board
TM9100 Service Manual
© Tait Electronics Limited August 2005
front panel with control elements, indicators, LCD, speaker, and
concealed microphone
space-frame and seals
control-head board with SMT components, shielding cans, connectors,
and volume potentiometer
control-head loom with female-female adapter
adapter flange
31.
1^
1*
with the radio model number is attached to the
1#
in place. The rear side of the front panel assembly also has four screw
F
.
1#
(for the function, selection, and scroll keys) and the
1$
protrude through apertures in the front panel assembly
F
.
consists of an injection-moulded plastic part
1#
and , the LCD assembly
F
.
1&
is fitted to the shaft of
1@
sits on a foam seal inside a
1^
. Another foam seal is
Figure 2.4 on
LEDs,
STATUS
1@
and the speaker
1^
.
J
and
F
.
Description 29