Motorola ASTRO XTS 5000 Detailed Service Manual page 325

P
parts list
transceiver (RF) board
700-800 MHz 8-12, 8-26
UHF 8-57, 8-73
VHF 8-43
VOCON board
NNTN4563A/B 8-133
NNTN4717D 8-162
NNTN4819A 8-148
NTN9564B 8-105
NTN9564C 8-119
Patriot IC U401
description 3-18
digital signal processor (DSP) 3-19
microcontroller unit (MCU) 3-18
PCIC (power-control IC) U104
automatic level control (ALC) 3-12
D/A outputs 3-13
detailed theory 3-11
purpose 3-8
temperature cut back 3-13
voltage multiplier 3-12
voltage regulator 3-12
power
amplifier transistor 3-10
components, VOCON board 3-22
conditioning components, transceiver 3-5
power control IC U104 See PCIC (power control IC)
U104
power distribution
block diagram
700-800 MHz 2-2
UHF 2-2
VHF 2-2
keep-alive mode 2-2
radio 2-1
transceiver board 2-3
transmitter 3-9
VOCON board 2-3
power-up self-check
diagnostics and repair 4-6
errors 4-5
power-up/power-down sequence 3-33
preselector filters, receiver front end 3-6
R
radio
keep-alive mode 2-2
power distribution 2-1
power-up/power-down sequence 3-33
receive audio path, VOCON board 3-33
receiver
back end
Abacus III IC U500 3-7
detailed theory 3-7
sampling clock oscillator 3-8
second LO 3-8
block diagram 3-5
front end
detailed theory 3-6
IF filter 3-6
6881094C31-D
low-noise amplifier (LNA) 3-6
mixer 3-6
preselector filters 3-6
reference oscillator Y200, FGU 3-14
RF
detectors, transmitter 3-11
interface connector P201 3-17
S
sampling clock oscillator 3-8
schematics
transceiver (RF) board 8-3
transceiver board list 8-1
VOCON board 8-96
VOCON board list 8-1
second LO (local oscillator) 3-8
serial audio CODEC port (SAP) 3-20
serial EEPROM 3-5
service tools, recommended 4-2
side interface connector, flipper IC 3-25
signal tracing, troubleshooting 4-3
SSI clock and frame sync generator, flipper IC 3-27
standard supply voltages 4-4
static RAM (SRAM) IC U403 3-20
summing amplifier U106, transmitter 3-11
symbols
caution 1-2
danger 1-2
warning 1-2
system clocks
troubleshooting 4-4
VOCON board 3-31
T
temperature cut back, PCIC 3-13
terms and definitions Glossary-1
timer module, DSP 3-19
tools, recommended service 4-2
transceiver
antenna port J2 3-5
battery connector J3 3-3
block diagram 3-2, 3-3
board overlays
700-800 MHz 8-10
UHF 8-55
VHF 8-41
detailed theory 3-2
interconnections 3-3
parts list
700-800 MHz 8-12, 8-26
UHF 8-57, 8-73
VHF 8-43
power conditioning 3-5
power distribution diagram 2-3
schematics 8-3
serial EEPROM 3-5
VOCON connector P1 3-3
voltage regulators 2-3
transmit audio path, VOCON board 3-32
transmitter
antenna switch 3-10
Index-3
July 21, 2004