Motorola ASTRO XTS 5000 Detailed Service Manual page 5

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Chapter 3 Theory of Operation............................................................ 3-1
3.1 Transceiver Board.......................................................................................................................... 3-2
3.2 VOCON Board ............................................................................................................................. 3-16
3.3 Encryption Module ....................................................................................................................... 3-42
Chapter 4 Troubleshooting Procedures ............................................. 4-1
4.1 Handling Precautions..................................................................................................................... 4-1
4.2 Recommended Service Tools........................................................................................................ 4-2
4.3 Voltage Measurement and Signal Tracing..................................................................................... 4-3
4.4 Standard Bias Table ...................................................................................................................... 4-4
4.5 Power-Up Self-Check Errors.......................................................................................................... 4-5
4.6 Power-Up Self-Check Diagnostics and Repair (Not for Field Use)................................................ 4-6
Chapter 5 Troubleshooting Charts ..................................................... 5-1
5.1 List of Troubleshooting Charts ....................................................................................................... 5-1
5.2 Main Troubleshooting Flowchart.................................................................................................... 5-2
5.3 Power-Up Failure ........................................................................................................................... 5-3
5.4 DC Supply Failure.......................................................................................................................... 5-7
5.5 Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) .................... 5-13
5.6 Display Failure (NTN9564) .......................................................................................................... 5-16
5.7 Volume Set Error ......................................................................................................................... 5-19
5.8 Channel/Zone Select Error .......................................................................................................... 5-20
5.9 Button Test................................................................................................................................... 5-21
5.10 Top/Side Button Test ................................................................................................................... 5-22
5.11 VCO TX/RX Unlock...................................................................................................................... 5-23
5.12 VOCON RX Audio........................................................................................................................ 5-28
5.13 VOCON RX Audio (for kit NNTN5567) ........................................................................................ 5-29
5.14 RX RF .......................................................................................................................................... 5-31
5.15 TX RF (VHF and UHF Range 2) .................................................................................................. 5-36
5.16 TX RF (UHF R1/700-800 MHz).................................................................................................... 5-39
5.17 Keyload Failure ............................................................................................................................ 5-42
5.18 Secure Hardware Failure ............................................................................................................. 5-43
Chapter 6 Troubleshooting Waveforms ............................................. 6-1
6.1 List of Waveforms .......................................................................................................................... 6-1
6.2 13 MHz Clock................................................................................................................................. 6-2
6.3 16.8 MHz Buffer Input and Output ................................................................................................. 6-3
6.4 32.768 kHz Clock Outputs ............................................................................................................. 6-4
6.5 SPI B Data ..................................................................................................................................... 6-5
6.6 Receive Serial Audio Port (SAP) ................................................................................................... 6-6
6.7 Receive Baseband Interface Port (RX BBP).................................................................................. 6-7
6.8 Transmit Baseband Interface Port (TX BBP) ................................................................................. 6-8
Chapter 7 Troubleshooting Tables ..................................................... 7-1
7.1 List of Board and IC Signals .......................................................................................................... 7-1
November 16, 2006
Table of Contents
6881094C31-E