Motorola ASTRO Digital Spectra Service Manual page 9

Table of Contents
ASTRO Spectra Plus VOCON DC Supply Failure ................................................................ 5-20
ASTRO Spectra Plus VOCON TX Modulation Failure Sheet 1 of 4...................................... 5-21
ASTRO Spectra Plus VOCON TX Modulation Failure Sheet 2 of 4 ...................................... 5-22
ASTRO Spectra Plus VOCON TX Modulation Failure Sheet 3 of 4...................................... 5-23
ASTRO Spectra Plus VOCON TX Modulation Failure Sheet 4 of 4 ...................................... 5-24
ASTRO Spectra Plus VOCON RX Audio Failure .................................................................. 5-24
ASTRO Spectra Plus VOCON Secure Hardware Failure ..................................................... 5-25
ASTRO Spectra Plus VOCON Key Load Fail........................................................................ 5-26
Chapter 6 Troubleshooting Waveforms ............................................. 6-1
6.1 Introduction .................................................................................................................................... 6-1
6.2 ASTRO Spectra Waveforms.......................................................................................................... 6-1
Waveform W1: Power-On Reset Timing........................................................................................ 6-1
Waveform W2: DSP SSI Port RX Mode ........................................................................................ 6-2
Waveform W3: DSP SSI Port TX Mode CSQ................................................................................ 6-2
Waveform W4: ABACUS Programming at Mode Change ............................................................. 6-3
Waveform W5: ABACUS/ADSIC Interface .................................................................................... 6-3
Waveform W6: SPI Bus Programming ADSIC .............................................................................. 6-4
Waveform W7: Receive Audio....................................................................................................... 6-4
Waveform W8: Transmit Audio...................................................................................................... 6-5
Waveform W9: Power-Down Reset ............................................................................................... 6-5
Waveform W10: ADSIC 2.4 MHz Reference ................................................................................. 6-6
6.3 ASTRO Spectra Digital Plus VOCON Board Waveforms .............................................................. 6-7
32 kHz Clock Waveform ................................................................................................................ 6-7
16.8 MHz Clock Waveform ............................................................................................................ 6-8
TX Modulation Out Waveform ....................................................................................................... 6-8
Differential ADDAG Output Waveform........................................................................................... 6-9
TX SSI Waveform .......................................................................................................................... 6-9
SPI Bus Waveform ...................................................................................................................... 6-10
TX 1 kHz Tone Waveform ........................................................................................................... 6-10
Serial Audio Port Waveform ........................................................................................................ 6-11
RX Audio Waveform .................................................................................................................... 6-11
RX BBP Waveform ...................................................................................................................... 6-12
Secure Interface Waveform ......................................................................................................... 6-12
8 kHz Frame Sync for Security Circuitry Waveform .................................................................... 6-13
Chapter 7 Schematics, Component Location Diagrams, and
Parts Lists .............................................................................................. 7-1
7.1 RF Section .................................................................................................................................... 7-2
ASTRO Spectra Radio Interconnection................................................................................... 7-4
HRN4009B/HRN6014A VHF RF Board; HRN4010B/HRN6020A UHF RF Board; and
HRN6019A 800 MHz RF Board Schematic............................................................................. 7-5
HRN4009B/HRN6014A VHF RF Board, HRN4010B/HRN6020A UHF RF Board, and
HRN6019A 800 MHz RF Board Component Location Diagrams............................................ 7-6
HRN4009C/HRN6014C VHF RF Board Schematic Diagram.................................................. 7-9
HRN4009C/HRN6014C VHF RF Board Component Location Diagrams ............................. 7-10
HRN4009E and HRN6014D VHF RF Board; HRN4010D and HRN6020C UHF RF Board; and
HRN6019C 800 MHz RF Board Schematic Diagram (Sheet 1 of 2) ..................................... 7-12
HRN4009E and HRN6014D VHF RF Board; HRN4010D and HRN6020C UHF RF Board; and
HRN6019C 800 MHz RF Board Schematic Diagram (Sheet 2 of 2) ..................................... 7-13
68P81076C25-C
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July 1, 2002