The Icom Service Manual for the IC-736 and IC-738 HF transceivers provides detailed instructions on setup, operation, and troubleshooting, including disassembly instructions, circuit descriptions, adjustment procedures, and parts lists. It emphasizes safety precautions, such as using insulated tools and ensuring the transceiver is disconnected from power before servicing, to prevent electric shock and equipment damage.
Overview
Refer to the PDF for details.
Specifications
- Frequency coverage: Receive 500 kHz — 29.995 MHz, 50 MHz ~ 54 MHz (IC-736 only)
- Mode: SSB, CW, AM, FM
- Number of memory channels: 101 (89 regular, 10 split, 2 scan edges)
- Antenna impedance: 50 Q nominal
- Usable temperature range: —10°C to +60°C; +14°F to +140°F
- Frequency stability: Less than +200 Hz from 1 min. to 60 min. after power ON
- Receive system: Triple-conversion superheterodyne
- Intermediate frequencies: SSB, FM 69.0115 MHz, 9.0115 MHz, 455 kHz; CW 69.0106 MHz, 9.0106 MHz, 455 kHz; AM 69.0100 MHz, 9.0100 MHz, 455 kHz
- Sensitivity (Pre-amp ON): SSB, CW 1.8 ~ 29.995 MHz Less than 0.15 µV, 50 ~ 54 MHz (IC-736 only) Less than 0.13 µV; FM (12 dB SINAD) 28 ~ 29.7 MHz Less than 0.5 µV, 50 ~ 54 MHz (IC-736 only) Less than 0.3 µV; AM (10 dB S/N) 0.5-1.8 MHz Less than 13.0 µV, 1.8 — 29.995 MHz Less than 2.0 µV, 50 ~ 54 MHz (IC-736 only) Less than 1.6 µV
- Squelch sensitivity (Pre-amp ON): SSB Less than 5.6 µV at threshold, FM Less than 0.3 µV at threshold
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
The source does not provide specific information on installation or setup highlights, including wiring, clearances, calibration, or prerequisites.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Service manual (PDF – 36.7 MB)
Service manual for Icom IC-736/IC-738: troubleshoot, calibrate, and repair radio components. File size: 36.7 MB.
- Brand: Icom-ic-736-ic-738-service
- Model: MANUAL
- Type: Service manual
- File size: 36.7 MB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Download MANUAL service manual (PDF)
Icom IC-736 / IC-738 Service Manual Overview
The Icom IC-736 and IC-738 are advanced HF/50MHz transceivers designed for amateur radio enthusiasts seeking reliable and high-performance communication equipment. These models provide versatile operation across multiple bands with excellent sensitivity and selectivity, making them ideal for both casual and professional use. This service manual offers detailed guidance on maintenance, troubleshooting, and repair to ensure optimal performance and longevity of your device.
Main Features and Specifications
- Frequency Coverage: HF bands plus 50 MHz (6 meters)
- Mode Support: SSB, CW, AM, FM
- Output Power: Up to 100 watts (SSB/CW/FM)
- Receiver Sensitivity: Better than 0.16 µV for 10 dB S/N
- Built-in Automatic Antenna Tuner (IC-738)
- Multiple Filter Options for Enhanced Selectivity
- Digital Signal Processing (DSP) for Noise Reduction
- Large, Easy-to-Read LCD Display
Basic Usage and Operation Tips
To operate the IC-736 or IC-738, first ensure proper antenna connection and power supply. Select the desired band and mode using the front panel controls. Adjust the RF gain and volume for clear reception. Use the built-in filters to minimize interference and optimize signal clarity. For transmitting, perform a microphone check and adjust the speech processor as needed to maintain clean audio output. Regularly calibrate the frequency display to maintain accuracy.
Troubleshooting and Maintenance Notes
If you experience issues such as weak reception, distorted audio, or power irregularities, consult the troubleshooting section of this manual for step-by-step diagnostics. Common maintenance tasks include cleaning connectors, inspecting internal fuses, and verifying antenna tuner operation (for IC-738). Avoid opening the device unless qualified, as improper handling can cause damage or void warranties.
Safety Reminder
Always disconnect the transceiver from the power source before performing any maintenance or repairs. Use only recommended accessories and cables to prevent electrical hazards. Operate the device in a well-ventilated area to avoid overheating, and never transmit without a proper antenna connected to avoid damage to the transmitter. Follow all local regulations regarding radio frequency transmissions.