Preface - Motorola i425e Detailed Service Manual

PREFACE

The i425/i290 Digital Multi-Service, Data-Capable Portable Field Service Manual
contains the information necessary to identify and fix problems in the Motorola i425/i290
Digital Portable. This unit is based on digital technology and is designed to operate on iDEN
systems.
Basic and field-level service for this unit as described in this manual includes troubleshooting,
testing, board swapping, and maintenance.
Service for this unit is based on the substitution method: a faulty part is replaced by a working one,
providing quicker service to the customer. For example, if the battery is faulty, it is replaced. If
the unit requires more complete testing or service than is available at the basic level, it is sent to
the field-level service facility, serviced, and returned to the iDEN Customer Care Center (ICC).
NOTE: Before operating or testing this unit, please read the Safety and General Information
section in the front of this manual.
Who Should Use This Manual
This manual is intended for service technicians who should be familiar with the test equipment
recommended in Appendix A. To help pinpoint basic problems with the unit, first perform the
mechanical checks and self tests as described in Chapter 5; then proceed to field level
troubleshooting and testing.
How This Manual Is Organized
This manual contains the following chapters and appendices:
Chapter 1 presents the theory and technology used by the iDEN system and unit.
Chapter 2 describes how to prepare test equipment setups for the iDEN system and how to operate
the test equipment. It also contains disassembly and reassembly instructions.
Chapter 3 describes the troubleshooting procedures.
Chapter 4 contains the component board layouts, schematic diagrams and component lists.
Appendix A Provides information on ordering kits and replacement parts. It also contains lists of
recommended test equipment.
6880401P26-O
PREFACE: Conventions Used in This Manual
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