Service Manual

MM-E 2072-09333-00
2-2
2-1.1.2 Wiring Diagram
Figure 2-2 shows the wiring diagram of the Micom-Z dash-mount version. Micom-Z dash-mount
version comprises the following main modules:
a. LORD module, includes the following main circuits:
(1) Audio signal processing circuits for the receive and transmit paths.
(2) Digital signal processor (DSP) and its auxiliary circuits.
(3) RF and IF modulation/demodulation and signal processing circuits for the receive and
transmit paths.
(4) Synthesizer and local oscillator circuits, and the Micom-Z frequency reference.
(5) Main microcomputer subsystem used to control the operation of the Micom-Z circuits. It
is part of the Micom-Z management subsystem, which also includes a microcomputer
subsystem located in the CONTROL HEAD module.
The module also includes the optional GPS receiver, and its interface.
LCD LORD
J4
P3
J6
GPS
GPS
Receiver
J8
Backup
Battery
J4
HI POWER
J3
J1
P3
RX
P2
J2
TX
P4
J5
ACCESSORY
ANT
VDC IN
E2
E1
J3
P2
P4
P1
P6
Body AssemblyFront Panel Assembly
Socket
for SD
Memory
Card
Microphone
Figure 2-2. Micom-Z Dash-Mount Wiring Diagram
b. HI POWER module, includes the following main circuits:
(1) Main power supply, provides the regulated voltages needed by the Micom-Z circuits, and
provides power for an external antenna tuner unit (ATU), connected to Micom-Z.
(2) Receiver front end circuits, connected via a coaxial cable to the LORD RF receive path.
(3) RF power amplifier for the transmit path, and its power supply, control and protection
circuits. The drive signal for the RF power amplifier is provided via a coaxial cable by the
LORD RF transmit path.