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Motorola HT 1000 Series

Motorola HT 1000 Series
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HT 1000, MT 2000, MTS 2000,
and MTX Series
Handie-Talkie
®
Portable Radios
Service Section
TMTMTM
Motorola
8000 West Sunrise Boulevard
Fort Lauderdale, Florida 33322
68P81200C40-O
*6881200C40*

Table of Contents

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Motorola HT 1000 Series Specifications

General IconGeneral
BrandMotorola
ModelHT 1000 Series
CategoryPortable Radio
LanguageEnglish

Summary

Model Numbering System

Type of Unit (Position 1)

Defines the first position in the model number for unit type.

Model Series (Positions 2 & 3)

Specifies the model series using positions 2 and 3 of the model number.

Frequency Band (Position 4)

Identifies the radio's operating frequency range based on position 4.

Power Level (Position 5)

Indicates the power output level of the radio as per position 5.

Physical Packages (Position 6)

Details the physical package configuration of the radio in position 6.

Channel Spacing (Position 7)

Specifies the channel spacing for the radio based on position 7.

Primary Operation (Position 8)

Defines the primary operating mode of the radio in position 8.

Primary System Type (Position 9)

Identifies the primary system type of the radio as per position 9.

Feature Level (Position 10)

Indicates the feature level of the radio based on position 10.

Version (Position 11)

Specifies the major version change of the radio in position 11.

Unique Model Variations (Position 12)

Details unique model variations as defined by position 12.

Model Suffix (Positions 13-16)

Defines model suffixes, such as 'SP', using positions 13-16.

SECTION I. INTRODUCTION

Safety Notices: Warnings, Cautions, and Notes

Explains the classifications for safety notices: WARNINGS, CAUTIONS, and NOTES.

SECTION II. RECOMMENDED EQUIPMENT AND PROCEDURES

Recommended Test Equipment

Lists standard and unique test equipment required for servicing portable radios.

Service Aids and Recommended Tools

Details service aids and tools specifically designed for radio servicing.

Field Programming

Covers the requirements for field alignment and programming.

SECTION III. TRANSCEIVER PERFORMANCE TESTING

General

Overview of radio specifications and test equipment accuracy.

Setup

Describes connecting equipment for alignment procedures and initial settings.

Test Mode

Explains entering and using radio test modes for performance checks.

IV. ERROR CODE DISPLAYS

Power-up Display Codes

Lists fatal and non-fatal error codes displayed during radio power-up tests.

Operational Display Codes

Details error codes that appear during normal radio operation.

SECTION V. RADIO ALIGNMENT PROCEDURE

General

Describes the setup and PC requirements for radio alignment.

Reference Oscillator Alignment

Critical procedure for proper radio operation and interference prevention.

Front-End Pre-Selector (VHFUHF)

Procedure for tuning front-end filter varactors in VHF and UHF models.

Rated Audio

Procedure for adjusting the radio's rated audio output level.

Squelch

Procedure for setting the squelch threshold and monitoring for chatter.

Transmitter Power

Covers adjustments for high-power and low-power transmitter output.

Transmit Deviation Balance (Compensation)

Balances modulation sensitivity of VCO and reference modulation.

Transmit Deviation Limit

Sets the limit for the radio's transmit deviation.

Transmit Deviation Limit Reference

Sets reference limits for transmit deviation, not for 900MHz models.

VCO Crossover Frequency

Sets crossover frequency for phase-locked-loop tuning after VHF/UHF VCO repair.

Signalling Deviation

Adjusts deviation for DTMF, Trunking, and MDC signalling.

SECTION VI. DISASSEMBLY AND REASSEMBLY

Safety Precautions for CMOS Devices

Mandatory precautions for handling static-sensitive CMOS devices during disassembly.

General Disassembly Notes

Important notes on snaps, tabs, and part alignment during disassembly.

Disassembly to Board Level

Step-by-step guide for removing the battery, antenna, and knobs.

Disassembly of Control Top

Procedure for disassembling the radio's control top assembly.

Disassembly of Front Cover Assembly

Guide for removing the front cover, display, speaker, and microphone.

SECTION VII. MAINTENANCE

Introduction

Overview of preventive maintenance, CMOS handling, and repair techniques.

Preventive Maintenance

Recommends periodic visual inspection and cleaning of the radio.

Safe Handling of CMOS Devices

Mandatory precautions for preventing damage to CMOS devices from static or voltage.

Repair Procedures and Techniques

Guidance on part replacement, substitution, and general repair practices.

APPENDIX

Secure Modules Overview

Information on Secure Modules for MTS 2000 radios and their functions.

Circuit Description

Details the power supplies and communication bus for the Secure Module.

Troubleshooting Secure Operations

Addresses error codes and common issues related to secure module operation.

Keyloading Problems

Procedure for troubleshooting issues with key loading onto the secure module.

Service Aid

Identifies a specific cable kit for connecting a keyloader to the MTS 2000 radio.

Retrofit Instructions

Provides steps for physically installing a secure module into a radio.

Secure Alignment Procedure

Covers tuning secure TX deviation and RX discriminator level for optimal performance.

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