Chapter 1 Introduction
1.1
General
This manual includes all the information necessary to maintain peak product performance and
maximum working time. This detailed level of service (component-level) is typical of some service
centers, self-maintained customers, and distributors.
Use this manual in conjunction with the
ASTRO Digital Spectra and Digital Spectra Plus Mobile
Radios Basic Service Manual
(Motorola part number 6881076C20), which helps in troubleshooting a
problem to a particular board.
Conduct the basic performance checks first to verify the need to analyze the radio and help pinpoint
the functional problem area. In addition, you will become familiar with the radio test mode of
operation which is a helpful tool. If any basic receiver or transmitter parameters fail to be met, the
radio should be aligned using the radio alignment procedure described in the
ASTRO Digital Spectra
and Digital Spectra Plus Mobile Radios Basic Service Manual
.
Included in other areas of this manual are functional block diagrams, detailed Theory of Operation,
troubleshooting charts and waveforms, schematics, and parts list. You should be familiar with these
sections to aid in deducing the problem circuit. Also included are component location diagrams to aid
in locating individual circuit components, as well as IC diagrams, which identify some convenient
probe points.
The Theory of Operation section of this manual contains detailed descriptions of operations of many
circuits. Once you locate the problem area, review the Troubleshooting Chart for that circuit to fix the
problem.
Содержание ASTRO Digital Spectra
Страница 1: ...ASTRO Digital Spectra and Digital Spectra Plus UHF VHF 800 MHz Mobile Radios Detailed Service Manual ...
Страница 2: ......
Страница 6: ...September 5 2008 6881076C25 E iv Document History Notes ...
Страница 20: ...xviii List of Tables September 5 2008 6881076C25 E Notes ...
Страница 24: ...September 5 2008 6881076C25 E xxii CommercialWarranty Notes ...
Страница 48: ...September 5 2008 6881076C25 E xlvi Model Numbering Charts and Specifications Notes ...
Страница 142: ...September 5 2008 6881076C25 E 3 82 Theory of Operation Power Amplifiers Notes ...
Страница 218: ...September 5 2008 6881076C25 E 4 76 Troubleshooting Procedures Power Amplifier Procedures Notes ...
Страница 258: ...September 5 2008 6881076C25 E 6 14 Troubleshooting Waveforms ASTRO Digital Spectra Plus VOCON Board Waveforms Notes ...
Страница 434: ...September 5 2008 6881076C25 E Glossary 10 Notes ...
Страница 440: ...Index 6 September 5 2008 6881076C25 E Notes ...
Страница 441: ......