Codan 9780 - User Manual

HF SSB Transceiver
9323, 9360, 9390 and 9780
Technical Service Manual
No part of this handbook may be reproduced, transcribed, translated into any
language or transmitted in any form whatsoever without the prior written consent
of Codan Pty Ltd
 1994 Codan Pty Ltd.
Codan part number 15-02051 Issue 4, August 1997

Codan 9780 Specifications

General

Brand	Codan
Model	9780
Category	Transceiver
Language	English

Summary

Technical System Details

Power Management and Switching Logic

Receiver System Architecture

Transmitter System Architecture

Frequency Generation and Control Systems

Microprocessor Control and Communication Buses

Explains the microprocessor, peripherals, and communication buses for transceiver control.

PA Section and ALC Control

Maintenance and Troubleshooting Guide

General Component Handling and Safety Precautions

Circuit Board Repair and Replacement Procedures

Disassembly and Reassembly Instructions

Fault Diagnosis Methodology and Voltage Checks

Outlines general troubleshooting approaches, transistor/IC testing, and voltage checks.

Troubleshooting Specific Fault Scenarios and Error Messages

Guides on diagnosing and resolving common issues and interpreting error messages.

Calibration and Performance Adjustments

Required Test Equipment and Test Mode Procedures

Lists essential test equipment and setup procedures for calibration and alignment.

VCO and Synthesiser Tuning and Verification

Provides steps for checking and adjusting VCOs and synthesiser lock loops.

Filter Alignment Procedures

Transmitter Alignment and Tuning

Covers adjustments for frequency, PA bias, output power, and intermodulation.

Receiver Performance Verification Tests

Details tests for receiver sensitivity, AGC, audio output, selectivity, and noise limiter.

Transmitter Performance Verification Tests

Details checks for transmitter frequency, ALC, power output, and intermodulation.

Parts List and Drawings Reference