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Icom IC-735 - Service Manual

Icom IC-735
149 pages
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Table of Contents

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Icom IC-735 Specifications

General IconGeneral
TypeHF Transceiver
Antenna Impedance50 ohms
Supply Voltage13.8 V DC
IF RejectionMore than 70 dB
ModesSSB, CW, AM
Image Rejection>70 dB
Selectivity2.4 kHz (SSB), 6 kHz (AM)
Current Consumption20 A (Transmit)

Summary

SPECIFICATIONS

General Specifications

Lists electrical characteristics, frequency coverage, and power supply requirements.

Transmitter Specifications

Details transmitter output power, antenna impedance, and input/output specifications.

Receiver Specifications

Provides receiver specifications for CW, SSB, AM, and FM modes.

CIRCUIT DESCRIPTION

Phase Locked Loop (PLL) Circuits

Details the Phase Locked Loop (PLL) circuit and its components.

VOLTAGECIRCUIT DIAGRAMS

Front Unit Circuit Diagram

Schematic and wiring diagram for the front unit.

Main Unit Circuit Diagram

Circuit diagram for the main unit.

PL Unit Circuit Diagram

Circuit diagram for the PL unit.

MAINTENANCE AND ADJUSTMENT

Servicing Preparation and General Adjustments

Steps before servicing and general adjustment procedures.

PLL and Transmitter Adjustments

Detailed steps for adjusting PLL and transmitter parameters.

Receiver Adjustments and Locations

Procedures for receiver adjustments and visual guide to adjustment points.

TROUBLESHOOTING

Common Problems and Solutions Guide

Guide to identifying and resolving common operational issues with the IC-735.

DISASSEMBLY AND ASSEMBLY DIAGRAMS

BLOCK DIAGRAM

Overall IC-735 System Block Diagram

Overall functional block diagram of the IC-735 transceiver.

IC RATINGS

ICOM CI-V COMMUNICATION INTERFACE SYSTEM

SCHEMATIC DIAGRAM

Main Unit Schematic Diagram

Detailed schematic diagram of the main unit.

PL Unit Schematic Diagram

Detailed schematic diagram of the PL unit.

PA Unit Schematic Diagram

Detailed schematic diagram of the PA unit.

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