HYT TM-800 Service Manual

1
CONTENTS
Revision History………………………………………………………………………………1
General…………………………………………………………………………………………1
Radio Overview………………………………………………………………………….………3
Software Specification…………………………………………………………………………6
Circuit Description………………………………………………..…………………………..78
Semiconductor Data………………………………………………………………………….83
Component Description…………………………………………..…………………………90
Part List 1…………………………………………………………………………….…………91
Troubleshooting Flow Chart…………………………………………………….…………91
Exploded View…………………………………………………………………..……………107
Part List 2…………………………………………………………………………..………….108
Disassembly and Reassembly for Repair………………………………………………..109
Remote Kit Installation (Optional)…………………………………………………….…..112
Packing……………………………………………………………...…………………………114
Adjustment……………………………………………………………………...…………….115
Adjustment Description……………………………………………………………….……122
Terminal Function……………………………………………………………………………128
TM-800 PC Board View……………………………………………………………………...132
TM-800 Schematic Diagram………………………………………………………………….142
TM-800 Block Diagram…………………………………………………………………….…147
Specifications…………………………………………………………….…………………148
Appendix 1 Entering Characters………………………………………………….…………149

HYT TM-800 Specifications

General

Brand	HYT
Model	TM-800
Category	Radio
Language	English

Summary

General Information

Precautions

Lists critical safety standards and guidelines for operation and installation.

Installation Safety Guidelines

Software Specification

Radio Modes

Mode Startup Entry

User Set Mode Configuration

Function Set Options

UST Code Settings

Hook & Moni and TX Signalling

Key Assignment Options

Firmware Download Mode

Firmware and PC Modes

Wireless Clone Mode Procedure

Dealer Mode Overview

Dealer Mode 1: Channel Set

Dealer Mode 2: Zone Information

Dealer Mode 3: Function Set

Function 1 Settings

Covers settings for Squelch Level, Off Hook Decode, Horn Alert, and PTT Release Tone.

Function 2 Settings

Tone Volume Settings

Alert Tone Configuration

AUX Inform Settings

Dealer Mode 4: Scan Information

Dealer Mode 5: DTMF Set

Dealer Mode 6: 2-Tone Set

Dealer Mode 7: 5-Tone Set

Dealer Mode 8: Embedded Message

Dealer Mode 9: Emergency Set

Dealer Mode 10: STUN Inform

Dealer Mode 11: Mode Information

Test Mode Operation

Model Set Mode Configuration

Part List 1: Tx-Rx Unit

Part List 1: VCO Unit

Part List 1: Display Unit

Part List 2: Assembly Components

Disassembly Procedure

Reassembly Procedure

Adjustment Procedures

Key Functions Overview

Explains front panel key functions and their operation in Panel Test Mode.

Front Panel Controls

Identifies and describes the function of each key on the radio's front panel.

Panel Test Mode Operations

Details how controls function when the radio is in Panel Test Mode.

Panel Tuning Mode

Panel Tuning Mode Details

Tuning Item Navigation and Flow Chart

Tuning Item Navigation

Describes how to use PF keys and the selector knob to adjust tuning items.

Adjustment Flow Chart

Illustrates the step-by-step process for performing radio adjustments.

Test Equipment for Alignment

Test Cables and Shield Cover Warnings

Adjustment Procedure Overview

Required Instruments

Download and Initialization

Details the steps for downloading software and initializing the radio before adjustment.

Transmitter Adjustment Procedures

Receiver Adjustment Procedures

Terminal Functions: Display Unit

Terminal Functions: TX-RX Unit

Terminal Functions: Secondary Interfaces

Terminal Functions: GPS and Other Interfaces

Appendix 1: Entering Characters

Microphone Keypad Entry

Radio Key Entry