The service manual for the Icom VHF Air Band Transceivers IC-A22/E and IC-A3/E provides detailed information on setup, operation, and troubleshooting for various versions of these models, including specifications, circuit descriptions, adjustment procedures, and parts lists. It includes safety warnings, such as avoiding exposure to high voltages and liquids, and offers guidance on disassembly and repair, emphasizing the importance of using proper tools and techniques to prevent damage.
Overview
This service manual provides the latest service information for the IC-A22/E and IC-A3/E VHF Air Band Transceivers, covering five versions of each model. It includes specifications, circuit descriptions, adjustment procedures, parts lists, and mechanical disassembly instructions. The manual also warns against connecting the transceiver to an AC outlet or a DC power supply exceeding 15 V, and provides guidelines for safe handling and repair.
Specifications
- Frequency coverage (MHz):
- Tx: 118.000-136.975
- Rx: Navigation 108.000-117.975
- Weather 161.650-163.275
- Mode:
- Tx/Rx AM (6KOOA3E)
- Rx FM (16KOG3E; for weather channel) U.S.A. version only
- Number of memory channels: 50
- Channel spacing: 25 kHz
- Frequency stability: 0.002% (-10°C to +50°C; +14°F to +122°F)
- Antenna impedance: 50 Q (nominal)
- Power supply requirement: 12-15 V DC (negative ground)
- Usable temperature range: ~10°C to +50°C; +14°F to +122°F
- Current drain (at 12 V DC):
- Transmit 1.0 A typical
- Rated audio 400 mA max.
- Squelched 55 mA typical
- Dimensions: 57 (W)x153 (H)x35 (D) mm; 2 '/, (W)x6 Yeo (H) x1 %/, (D) in (Projections not included)
- Weight: 465 g (16.4 oz) with CM-166 and antenna
- TRANSMITTER
- Output power (at 12 VDC): 5.0 W typical (PEP power), 1.5 W typical (Carrier power)
- Modulation system: Low level modulation
- Microphone impedance: 150
- Spurious emissions: +60 dB
- RECEIVER
- Receive system: Double-conversion superheterodyne
- Intermediate frequency:
- 1st 35.8 MHz
- 2nd 455 kHz
- Sensitivity: Less than 1 pV for 6 dB S/N (with 1 kHz, 30 % modulation)
- Tight squelch sensitivity: Less than 6.3 pV
- Selectivity: More than 8 kHz/—6 dB, Less than 25 kHz/-60 dB
- Spurious response rejection: -60dB
- Noise and hum: -26 dB
- Audio output power: 600 mW with an 8 © load
- Audio output impedance: 8Q
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
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 – 11.4 MB)
Icom IC-A3/IC-A3E Service Manual PDF: 11.4 MB. Provides technicians with troubleshooting and calibration procedures.
- Brand: Icom-ic-a3-ic-a3e-service
- Model: MANUAL
- Type: Service manual
- File size: 11.4 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-A3 / IC-A3E Service Manual Overview
The Icom IC-A3 and IC-A3E are handheld aviation transceivers designed for reliable communication in demanding flight environments. These rugged radios provide clear VHF communication for pilots and air traffic controllers, ensuring safety and efficiency during flight operations. The service manual offers detailed guidance on maintenance, repair, and troubleshooting to keep the device operating at peak performance.
Main Features and Specifications
- Frequency Range: 118.000 to 136.975 MHz (aviation band)
- Power Output: 5 Watts (high), 1 Watt (low)
- Channel Spacing: 25 kHz
- Display: LCD with backlight for easy readability
- Battery Type: Rechargeable NiMH battery pack
- Operating Temperature: -20°C to +60°C
- Dimensions: Compact and lightweight for portable use
- Durability: Water-resistant and shock-resistant construction
Basic Usage and Operation Tips
To operate the IC-A3/IC-A3E, power on the device and select the desired frequency using the channel selector or keypad. Always perform a radio check before flight to ensure clear transmission. Use the volume and squelch controls to adjust audio clarity. When not in use, switch to standby mode to conserve battery life. Regularly charge the battery and avoid exposing the radio to extreme temperatures to maintain optimal performance.
Troubleshooting and Maintenance Notes
If you experience weak transmission or reception, verify antenna connections and check battery charge levels. Intermittent audio or static may indicate the need for internal cleaning or component inspection. Refer to the service manual’s detailed schematics and test procedures for diagnosis. Periodically clean the exterior and connectors to prevent dust buildup. Replace worn or damaged parts only with genuine Icom components to ensure compatibility and safety.
Safety Reminder
Always follow aviation communication regulations and use the IC-A3/IC-A3E responsibly. Avoid operating the radio near flammable gases or liquids. Do not attempt repairs without proper training and tools; improper handling can cause damage or injury. Keep the device away from moisture and extreme impacts to preserve its integrity and ensure reliable operation during critical flight situations.