Motorola ASTRO Digital Spectra Plus Service Manual page 11

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 Digital Spectra Waveforms ...............................................................................................6-2
Waveform W1: Power-On Reset Timing ........................................................................................6-2
Waveform W2: DSP SSI Port RX Mode.........................................................................................6-2
Waveform W3: DSP SSI Port TX Mode CSQ ................................................................................6-3
Waveform W4: ABACUS Programming at Mode Change..............................................................6-3
Waveform W5: ABACUS/ADSIC Interface.....................................................................................6-4
Waveform W6: SPI Bus Programming ADSIC ...............................................................................6-4
Waveform W7: Receive Audio .......................................................................................................6-5
Waveform W8: Transmit Audio ......................................................................................................6-5
Waveform W9: Power-Down Reset................................................................................................6-6
Waveform W10: ADSIC 2.4 MHz Reference..................................................................................6-6
6.3 ASTRO Digital Spectra 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 List of Schematics and Component Location Diagrams.................................................................7-1
7.2 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/HRN6014D VHF RF Board, HRN4010D/HRN6020C UHF RF Board, and
HRN6019C 800 MHz RF Board Schematic Diagram (Sheet 1 of 2)......................................7-12
HRN4009E/HRN6014D VHF RF Board, HRN4010D/HRN6020C UHF RF Board, and
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October 28, 2002