The Icom service manual for the IC-32A/AT/E Dual Band FM Transceiver provides detailed instructions for setup, operation, and troubleshooting, including specifications, circuit descriptions, and adjustment procedures. It also includes safety precautions, repair notes, and parts ordering information to ensure proper maintenance and repair of the transceiver.
Manual Overview
The Icom IC-32A/AT/E service manual provides detailed instructions for servicing the dual band FM transceiver. It includes troubleshooting flowcharts, error codes, and diagnostic procedures to identify and resolve issues. Technicians are advised to ensure problems are internal before disassembly and to disconnect power before opening the transceiver. Calibration and adjustments require careful handling of variable components, using insulated tools, and avoiding prolonged power-on states when defects are present. The manual emphasizes the importance of using a 30-40 dB attenuator when connecting to test equipment like deviation meters or spectrum analyzers. Board-level guidance is provided with detailed layouts for various units, including the EF, Logic, Main, and RE units. Adjustments for PLL, receiver, and transmitter circuits are covered, with specific instructions for each. The manual also includes parts ordering information, requiring component numbers and quantities. Safety warnings highlight the risks of incorrect power supply connections and exposure to high RF signals.
Quick Issues Covered
- Diagnose power-up failures by checking DC input voltage limits.
- Calibrate VHF/UHF PLL circuits for frequency stability.
- Use schematics for circuit tracing during component-level repairs.
Overview
This service manual provides the latest service information for the IC-32A/AT/E Dual Band FM Transceiver. It covers six versions of the transceiver and includes sections on specifications, views, block diagrams, circuit descriptions, mechanical parts, maintenance and adjustment, board layouts, parts lists, optional units, and voltage diagrams.
Specifications
- Frequency coverage
- Mode: F3 (FM)
- Tuning step increment: IC-32A/AT 5, 10, 15, 20, or 25 kHz; IC-32E 12.5 or 25 kHz
- Antenna impedance: 50 Ω unbalanced
- Power supply requirement: 5.5~16.0 V DC (from the bottom terminal); 12.0~16.0 V DC (from [DC IN 13.8 V] jack)
- Current drain (at 13.2 V DC):
- – Power saved typical: 10 mA (VHF), 12 mA (UHF)
- – Receive Max. audio output: 250 mA (VHF), 250 mA (UHF)
- – Transmit HIGH power: 2.0 A (VHF), 2.2 A (UHF)
- – Transmit LOW power: 900 mA (VHF), 700 mA (UHF)
- Usable temperature range: -10°C~+60°C (+14°F~+140°F)
- Frequency stability: ±10 ppm (-10°C~+60°C, +14°F~+140°F)
- Dimensions and weight:
- – With BP-70 (U.S.A. version): 65 (2.6) x 180.5 (7.1) x 35 (1.4) mm; 590 g (1.3 lb)
- – With BP-4 (Asia version): 65 (2.6) x 169.0 (6.7) x 35 (1.4) mm; 545 g (1.2 lb)
- – With BP-3 (Other versions): 65 (2.6) x 159.0 (6.3) x 35 (1.4) mm; 510 g (1.1 lb)
- TRANSMITTER
- Output power:
- – HIGH: 5.5 W (VHF), 5.0 W (UHF)
- – LOW: 1.0 W (VHF), 1.0 W (UHF)
- Modulation system: Variable reactance frequency modulation
- Max. frequency deviation: ±5 kHz
- Spurious emissions: Less than -60 dB
- Microphone impedance: 2 kΩ
- RECEIVER
- Receive system: Double-conversion superheterodyne
- Intermediate frequencies: 1st 30.875 MHz, 2nd 455 kHz
- Sensitivity: Less than 0.25 µV for 12 dB SINAD
- Squelch sensitivity (threshold): Less than 0.158 µV
- Selectivity: Less than ±7.5 kHz/-6 dB; More than ±15 kHz/-60 dB
- Spurious response rejection: Less than -60 dB
- Intermodulation rejection: Less than -50 dB
- Audio output power: More than 400 mW at 10 % distortion with an 8 Ω load
- Audio output impedance: 8 Ω
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
NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16V. This will ruin the transceiver. DO NOT expose the transceiver to rain, snow, or any liquids. DO NOT reverse the polarities of the power supply when connecting the transceiver. DO NOT apply an RF signal of more than 20 dBm (100 mW) to the antenna connector. This could damage the transceiver’s front end.
Download MANUAL Service manual (PDF – 16.7 MB)
Icom IC-32A/IC-32AT/IC-32E Service Manual: Troubleshoot and repair with detailed diagrams and step-by-step instructions. File size: 16.7 MB.
- Brand: Icom-ic-32a-ic-32at-ic-32e-service
- Model: MANUAL
- Type: Service manual
- File size: 16.7 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-32A / IC-32AT / IC-32E Service Manual Overview
The Icom IC-32A, IC-32AT, and IC-32E are versatile dual-band amateur radios designed for reliable communication in various environments. These transceivers support both VHF and UHF frequency bands, making them ideal for amateur radio enthusiasts, emergency communication, and general two-way radio applications. This service manual provides detailed technical information, schematics, and maintenance guidelines to assist technicians and users in servicing and optimizing these devices.
Main Features and Specifications
- Dual-band operation: VHF (144 MHz) and UHF (430 MHz) bands
- FM modulation with high audio clarity
- Wide frequency coverage with programmable memory channels
- Built-in CTCSS and DCS tone encoding/decoding for selective calling
- Adjustable power output levels for flexible transmission range
- LCD display with backlight for easy readability
- Compact and durable design suitable for mobile and base station use
Basic Usage and Operation Tips
To operate the Icom IC-32 series radios, first ensure the device is properly powered and an appropriate antenna is connected. Use the channel selector to choose the desired frequency or memory channel. Adjust the volume and squelch controls to optimize audio clarity and minimize background noise. Utilize the built-in tone settings for secure communication with compatible radios. Regularly update memory channels to keep frequencies current and relevant to your communication needs.
Troubleshooting and Maintenance
Common issues such as weak transmission or poor reception can often be resolved by checking antenna connections and ensuring the battery or power supply is fully charged. Refer to the service manual’s schematic diagrams for detailed troubleshooting steps. Regularly clean the exterior and connectors to prevent dust buildup. If the device exhibits erratic behavior, a reset or firmware update may be required. Always use genuine replacement parts to maintain optimal performance.
Safety Reminder
Always operate the Icom IC-32A/IC-32AT/IC-32E radios in accordance with local regulations and licensing requirements. Avoid transmitting near sensitive electronic equipment or in hazardous environments. Ensure antennas are installed safely to prevent electrical hazards. Disconnect power before servicing the device to avoid electric shock. Proper maintenance and cautious operation will help ensure safe and reliable use of your radio equipment.