Astro Spectra Radio Interconnection - Motorola ASTRO Digital Spectra Plus Service Manual

7-4
HIGH-POWER PA
ANTENNA
CONNNECTOR
TX RX
DIRECTIONAL
COUPLER/
DETECTOR
TX RX
COAXIAL
CABLE
TO
LPF/
RX
FRONT-END
ANTENNA SW
RECEIVER
BOARD
COAXIAL
CABLE
FROM
VCO
BOARD
RIBBON
CABLE
FROM
COMMAND
BOARD
FUSE
DC POWER
CABLE BATT CABLE (GRN)
CHASSIS
IGN. CABLE (ORG)
GND
SPEAKER
TO POSITIVE
TERMINAL OF
VEHICLE
BATTERY
REMOTE MOUNT MODELS
VACUUM
VF VOLTAGE SERIAL BUS
FLUORESCENT
SOURCE INTERFACE
11-CHARACTER
HIGH VOLTAGE
MICROPROCESSOR
VF DRIVER
EEPROM
CONTROL HEAD (REMOTE MOUNT)
(W9 PUSHBUTTON MODEL)

ASTRO Spectra Radio Interconnection

October 28, 2002
MID/LOW-POWER PA
ANTENNA
CONNNECTOR
RX
TX
TO
LPF/ RX FRONT-END
ANTENNA SW RECEIVER
BOARD
TX
DIRECTIONAL
COUPLER/
DETECTOR
LOW-POWER
MID-
POWER
FROM
TX
VCO
BUFFER
BOARD
RIBBON
CABLE
FROM
COMMAND
BOARD
VIP
J2
REAR ACCESSORY
IN/OUT
CONNECTION
P2
FUSE
FUSE
DC POWER
CABLE
IGNITION
CABLE
TO
DASH MOUNT MODELS
CHASSIS COMMAND
GND BOARD
TO POSITIVE
TERMINAL OF
VEHICLE
BATTERY
REMOTE DASH
INTERCONNECT INTERCONNECT
BOARD
BOARD
FUSE
FUSE
MICROPHONE
VIP IN/OUT
REMOTE
INTERCONNECT
BOARD
VACUUM SERIAL BUS
SERIAL BUS
FLOURESCENT INTERFACE
INTERFACE
8 CHARACTER
MICRO-
HIGH VOLTAGE
MICRO-
PROCESSOR
VF DRIVER
PROCESSOR
CONTROL HEAD (REMOTE MOUNT) CONTROL HEAD (DASH MOUNT)
(W5/W7 PUSHBUTTON AND W4 ROTARY MODELS)
(W5/W7 PUSHBUTTON AND W4 ROTARY MODELS)
FRONT-END RECEIVER BOARD
MIXER
COAXIAL
FROM
CABLE
POWER PRESELECTOR
PREAMP
PA
RX
(COAXIAL CABLE)
INJECTION
FILTER
TO
TX
POWER TX BUFFER
RX BUFFER
PA
DIVIDER VCO
VCO BOARD
TO
POWER
PA
COMMAND BOARD
HANDHELD
INTERCONNECT
BOARD
8-CHARACTER
VACUUM
FLOURESCENT DISPLAY
DISPLAY
DRIVER
DISPLAY
HIGH VOLTAGE
SWITCHES
VF DRIVER
W3 HANDHELD CONTROL HEAD
Schematics, Component Location Diagrams and Parts Lists: RF Section
IF AMP MIXER
4 POLE 109.2MHz
XTAL
L/C
450Khz
ABACUS
FILTER
IC
L/C
REF
2.1MHz
LO
16.8MHz
SYNTHESIZER PRESCALER
XTAL
REF
TUNE
MOSI
RF BOARD
REF
MOSI
TUNE
INPUT
INPUT
POWER
D/A AUDIO
CONTROL/
IC PA
REGULATOR
SERIAL
BUS
INTERFACE
FROM
INTERCONNECT
BOARD
MOSI
DSP
SUPPORT
CIRCUIT
MODULE
MICROCONTROL
UNIT
(MCU)
AND
SUPPORT LOGIC IC
(SLIC)
DIGITAL SIGNAL
PROCESSOR
(DSP)
RAM ROM
RAM ROM EEPROM
VOCON BOARD
D OUT
D OUT
SBI
ODC
TO
INTERCONNECT
BOARD OR
DIRECTLY
TO W9
CONTROL
HEAD
MODULATION OUT
2.4MHz REF
DIGITAL RX IN
SBI
ENCRYPTION
DATA IN
BOARD
DATA OUT
(OPTIONAL)
MBEPF-23553-B
6881076C25-D