Motorola ASTRO XTS 5000 Detailed Service Manual page 172

Index-4
interconnections 4-1
parts list 9-11
power conditioning 4-3
power distibution diagram 3-2
receiver back end 2-6
receiver front end 2-5
schematics 9-2
serial EEPROM 4-3
transmitter 2-6
VOCON connector P1 4-1
voltage regulators 3-3
transmit audio path, VOCON board 4-26
transmitter
antenna switch 4-6
block diagram 2-6
directional coupler U101 4-6
driver amplifier U102 4-5
FracN frequency synthesizer 2-7
harmonic filter 4-6
introduction 4-5
PCIC (power-control IC) U104 4-7
power amplifier transistor 4-5
power distribution 4-5
power-control IC (PCIC) 2-6
RF detectors 4-6
summing amplifier U106 4-6
VCOBIC 2-7
transmitting
analog mode 2-5
ASTRO mode 2-5
troubleshooting
button test 6-13
channel/zone select error 6-12
charts listing 6-1
DC supply failure 6-5
display failure 6-8
handling precautions 5-1
keyload failure 6-28
main chart 6-2
power-up failure 6-3
power-up self-check
diagnostics and repair 5-4
errors 5-3
secure hardware failure 6-29
signal tracing 5-2
standard supply voltages 5-2
system clocks 5-2
top/side button test 6-14
VCO Tx/Rx unlock 6-15
VOCON
Rx audio 6-18
Rx RF 6-20
Tx audio 6-16
Tx RF 6-25
voltage measurement 5-2
volume set error 6-11
troubleshooting waveforms
13 MHz clock 7-2
16.8 MHz buffer input and output 7-3
32.768 kHz clock outputs 7-4
list 7-1
receive baseband interface port (BBP) 7-7
RX serial audio port (SAP) 7-6
SPI B data 7-5
transmit baseband interface port (BBP) 7-8
April 15, 2002
U
universal asynchronous receiver/transmitter (UART) 4-
13
universal connector
interface circuitry, VOCON board 4-22
J101 4-12
location 4-22
option selects 4-23
universal flex assembly 2-3
universal serial bus (USB) 4-14
USB transceiver, flipper IC 4-20
V
VCO (voltage-controlled oscillator) 2-6
VCO buffer IC (VCOBIC) U200, FGU 4-10
VCOBIC (voltage-controlled oscillators and buffer IC) 2-
7
VOCON board
5-volt regulator U505 4-18
audio components 2-8, 4-16
audio power amplifier U503 4-18
audio pre-amplifier U502 4-18
block diagram 2-3
board layouts 9-23
connector J101 pin-outs 4-22
controller components 2-7, 4-12
controls and control top flex 4-24
display module 4-23
display module connector P301 4-12
EEPOT potentiometer U509 4-19
encryption connector J701 4-12
ESD protection circuitry 4-21
Flash memory IC U402 4-15
flipper IC U301 4-19
GCAP II IC U501 4-17
interconnection diagram 2-3
interface support components 2-8, 4-19
keypad
module 4-23
module connector P107 4-12
memory components 2-7, 4-12
overview 2-2, 2-7
parts list 9-25
Patriot IC U401 4-13
power components 2-8, 4-16
power distibution 3-3
receive audio path 4-27
RF interface connector P201 4-12
schematics 9-16
static RAM (SRAM) IC U403 4-15
system clocks 4-25
transmit audio path 4-26
universal connector interface circuitry 4-22
universal connector J101 4-12
VOCON connector P1 4-1
voltage
measurement, troubleshooting 5-2
multiplier, PCIC 4-8
regulation, GCAP II IC U501 4-17
regulator, PCIC 4-8
regulators, transceiver 3-3
voltage-controlled oscillator (VCO) 2-6
68P81094C31-O