Motorola ASTRO XTL 1500 Detailed Service Manual page 446

700-800 MHz band .............................................. 3-59
out-of-lock condition, VCO ......................................... 4-7
overview, radio ........................................................... 2-1
P
parts
list
main board
136-174 MHz band ....................................... 7-56
380-470 MHz band ....................................... 7-95
450-520 MHz band ..................................... 7-136
700-800 MHz band ..................................... 7-180
lists table ................................................................ 7-1
ordering replacement .............................................A-1
replacement and substitution ................................. 4-1
PIN diode switches (136-174 MHz band) ................ 3-17
pin-out assignments, flex cables ................................ 8-1
power amplifier
136-174 MHz
theory of operation ........................................... 3-29
troubleshooting ................................................. 4-33
380-470 MHz
theory of operation ........................................... 3-33
troubleshooting ................................................. 4-34
450-520 MHz
theory of operation ........................................... 3-37
troubleshooting ................................................. 4-34
700-800 MHz
theory of operation ........................................... 3-41
troubleshooting ................................................. 4-34
description .............................................................. 2-7
power control
theory of operation
136-174 MHz band ........................................... 3-31
380-470 MHz band ........................................... 3-35
450-520 MHz band ........................................... 3-39
700-800 MHz band ........................................... 3-43
transmitter .............................................................. 2-7
power detector, ON
136-174 MHz band .............................................. 3-31
380-470 MHz band .............................................. 3-35
450-520 MHz band .............................................. 3-39
700-800 MHz band .............................................. 3-43
power distribution
controller .............................................................. 3-65
DC
136-174 MHz band ........................................... 3-16
380-470 MHz band ........................................... 3-15
450-520 MHz band ........................................... 3-15
700-800 MHz band ........................................... 3-16
introduction ....................................................... 3-15
power routing, controller B+ ..................................... 3-65
power-up self-check errors ........................................ 4-3
power-up/power-down sequence, controller ............ 3-67
precautions
handling ................................................................. 4-1
heat-related ............................................................ 4-2
preselector filters, receiver front-end
136-174 MHz band .............................................. 3-17
380-470 MHz band .............................................. 3-19
450-520 MHz band .............................................. 3-21
700-800 MHz band .............................................. 3-22
programming flash ................................................... 3-75
6815854H01-A
publications, related .................................................... xx
R
radio
136-174 MHz band
back-end receiver ............................................... 2-5
DC power distribution ....................................... 3-16
frequency generation unit ................................... 2-7
front-end receiver section ................................... 2-5
receiver .............................................................. 2-5
transmitter .......................................................... 2-6
380-470 MHz band
back-end receiver section .................................. 2-6
DC power distribution ....................................... 3-15
frequency generation unit ................................... 2-8
front-end receiver section ................................... 2-5
IF receiver section .............................................. 2-5
receiver .............................................................. 2-5
transmitter .......................................................... 2-6
450-520 MHz band
DC power distribution ....................................... 3-15
700-800 MHz band
back-end receiver section .................................. 2-6
DC power distribution ....................................... 3-16
frequency generation unit ................................... 2-8
front-end receiver section ................................... 2-6
receiver .............................................................. 2-6
transmitter .......................................................... 2-7
control-head assembly ........................................... 2-2
controller
B+ power routing .............................................. 3-65
DSP system clock ............................................ 3-68
MCU system clock ........................................... 3-68
power-up/power-down sequence ..................... 3-67
serial peripheral interface (SPI) bus ................. 3-71
theory of operation ........................................... 3-62
daughtercard module theory of operation ............ 3-64
functional blocks .................................................... 2-1
overview ................................................................. 2-1
power amplifier assembly ...................................... 2-7
power-up/power-down sequence ......................... 3-67
RF board
receiver back-end circuitry ............................... 3-23
theory of operation ............................................. 3-8
specifications
700-800 MHz ....................................................xxxiii
UHF Range 1 .................................................... xxxi
UHF Range 2 ....................................................xxxii
VHF .................................................................... xxx
troubleshooting
precautions
handling .......................................................... 4-1
heat-related .................................................... 4-2
procedures ......................................................... 4-1
waveforms .......................................................... 6-2
receive audio, controller .......................................... 3-72
receiver
136-174 MHz band
back-end
ABACUS III IC .............................................. 3-23
description ...................................................... 2-5
IF .................................................................. 3-23
Index-v
June 15, 2005