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Ericsson LPE-200 - User Manual

Ericsson LPE-200
56 pages
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Maintenance Manual
LPE-200
SCAN And SYSTEM
PORTABLE RADIOS
900 MHz
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Table of Contents

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Ericsson LPE-200 Specifications

General IconGeneral
Number of Channels16
ModulationFM
Battery Life8-10 hours
Channel Spacing12.5/25 kHz
RF Output Power5 W
Power SourceRechargeable battery

Summary

Manual Revision History

Radio Specifications

General Radio Specifications

Radio specifications including FCC ID, input voltage, frequency, dimensions, weight, and temperature.

Receive Specifications

Transmit Specifications

Product Description and Features

Key Features Overview

Highlights features like compact size, ruggedness, dual mode, display, and controls.

Mechanical Design and Options

Options and Accessories List

Lists available batteries, chargers, carrying accessories, and audio accessories with part numbers.

Radio Operation and Controls

Radio Controls Overview

Describes controls like knobs, emergency button, PTT, Clear/Monitor, and Option buttons.

Keypad Functions for Scan and System Modes

Scan Keypad Functions

Details functions of A/D, OPT, and SCN keys in Scan mode.

System Keypad Functions

Explains functions of numbered keys, OPT, M, and other keys in System mode.

Circuit Analysis Introduction

Software Architecture

Describes microprocessor software, bootloader, FLASH application, and DSP software.

Receiver Circuit Analysis

Details the RX Front End circuitry, including filters, amplifiers, and mixer.

Transmitter Circuit Analysis

TX;Converter;Modulator (N150) Circuit

Details the N150 chip's functions in transmit offset, SSB mixing, and modulation.

Synthesizer Circuits

Dual Synthesizer Circuits (N203)

Describes the main and auxiliary synthesizers for generating LO frequencies.

DC Power Distribution

RF Regulators Overview

Explains the synthesizer, receiver, and transmit regulators.

Power Management and Control

Service and Programming

Required Equipment for Service

Lists essential equipment for programming and testing the radio.

Radio Programming Procedures

Details personality and flash programming steps.

Basic Troubleshooting Guide

General Troubleshooting Table

Provides a table of symptoms, possible causes, and actions for common radio issues.

Error Codes and Warnings

Error Code Overview and Format

Describes the general format of error messages and the meaning of fatal errors.

Specific Error Code Listings

Hardware Fatal System Errors

Lists hardware-related fatal errors that cause radio resets.

Operational Software Fatal Errors

Lists fatal software errors that require service if resets don't resolve them.

Operational Software Non-Fatal Errors

Lists non-fatal software errors that appear briefly during operation.

Radio Programming Errors

Categorizes programming errors into low-level communication routines and bootloader errors.

PC Programming Software Errors

Lists errors that can occur on the PC side during programming.

Disassembly Procedure

Battery Pack and Front Cover Removal

Step-by-step instructions for removing the battery pack and front cover.

Separating Boards and Switch Assembly Removal

Details separating boards and removing the switch assembly from the radio housing.

Module Replacement and Reassembly

Covers PA module and filter replacement, and general reassembly instructions.

Assembly Diagram and Parts List

LPE-200 Radio Component List

Lists parts for the LPE-200 radio, including front and rear assemblies.

Front Assembly (Scan Model) Components

Details components of the front assembly for the Scan model.

Front Assembly (System Model) Components

Lists components for the front assembly of the System model.

Rear Assembly Components

Details the parts for the rear assembly of the radio.

Main Board Assembly Components

Lists components and their part numbers for the main circuit board.

Circuit Board Outline Diagrams

Front Side Circuit Board Layout

Shows the layout of components on the front side of the 900 MHz circuit board.

Back Side Circuit Board Layout

Illustrates the component placement on the back side of the 900 MHz circuit board.

Schematic Diagram Overview

Transceiver Block Diagram

A high-level block diagram showing the main functional blocks of the transceiver.

Transmitter Schematic Diagram

Synthesizer Schematic Diagram

Receiver Front End Schematic Diagram

RF Regulators Schematic Diagram

TX;RX Audio Schematic Diagram

Regulators and Power Switch Schematic

Debbie (D601) Netlist and Pinout

Hillary (D701) Netlist and Pinout

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