The Icom VHF Transceiver IC-V2e20 service manual provides detailed instructions for setup, operation, and troubleshooting, including circuit descriptions, adjustment procedures, and parts lists. It also includes safety warnings, such as avoiding connection to power supplies over 16 V and preventing exposure to liquids.
Manual Overview
The Icom IC-V220 service manual provides detailed guidance for servicing the VHF transceiver, focusing on troubleshooting, diagnostics, and adjustments. It emphasizes safety precautions, such as avoiding exposure to liquids and ensuring correct power supply connections. Troubleshooting involves verifying internal issues before disassembly and using insulated tools for adjustments. Error codes and diagnostics are not explicitly detailed, but the manual advises against applying excessive RF signals to prevent damage. Calibration and adjustments cover PLL, receiver, and transmitter settings, with specific procedures outlined for each. Board-level guidance includes layouts for the main, logic, VCO, and PLL units, aiding in component identification and servicing. The manual also provides part ordering instructions, requiring specific details like order numbers and component names. It stresses the importance of using attenuators with test equipment to prevent damage and advises against prolonged power application when defects are present. The manual serves as a comprehensive resource for technicians to maintain and repair the IC-V220 transceiver effectively.
Quick Issues Covered
- Diagnoses power-up failures due to incorrect voltage supply.
- Provides calibration procedures for PLL and receiver circuits.
- Includes schematics for circuit tracing and troubleshooting.
Overview
The service manual is for the ICOM VHF Transceiver IC-V220. It provides detailed information on specifications, circuit descriptions, adjustment procedures, and parts lists for servicing the transceiver. The manual includes sections on receiver and transmitter circuits, PLL and logic circuits, power regulator circuit, mechanical parts, and board layouts. It also outlines repair notes and safety warnings for handling the transceiver.
Specifications
- Frequency coverage: 150.000 ~ 174.000 MHz
- Mode: FM (16KOF3E)
- Channel spacing: 30 kHz
- Memory channels: Up to 18
- Antenna impedance: 50 ohms (nominal)
- Power supply requirement: 13.8 V DC ± 15% (negative ground)
- Current drain: Receive 450 mA (squelched), 1.1 A (max. audio output), Transmit 6.0 A (high), 3.2 A (low)
- Usable temperature range: -30°C ~ +60°C (-22°F ~ +140°F)
- Frequency stability: ±0.0005% (-30°C ~ +60°C)
- Dimensions: 140 (W) x 40 (H) x 160 (D) mm; 5.5 (W) x 1.6 (H) x 6.3 (D) in (Projections not included)
- Weight: 1.0 kg (2.2 lb)
- TRANSMITTER
- Output power: 25 W (high), 5 W (low)
- Modulation system: Variable reactance frequency modulation
- Max. frequency deviation: ±5.0 kHz
- Spurious emissions: -70 dB
- Harmonic emissions: -70 dB
- Noise and hum ratio: -50 dB
- Audio harmonic distortion: 10%
- Audio frequency response: +1 dB ~ -3 dB of +6 dB/octave with 300 Hz to 3000 Hz input
- Microphone impedance: 600 ohms
- RECEIVER
- Receive system: Double-conversion superheterodyne
- Intermediate frequencies: 1st 21.8 MHz, 2nd 455 kHz
- Sensitivity: 0.2 µV for 12 dB SINAD
- Squelch sensitivity: 0.2 µV (threshold level)
- Adjacent channel selectivity: -75 dB (-80 dB typical)
- Spurious response rejection: -90 dB
- Intermodulation rejection: -70 dB (-75 dB typical)
- Audio frequency response: +1 dB ~ -3 dB of -6 dB/octave with 300 Hz to 3000 Hz deviation
- Audio output power: 4 W with a 4 ohm load
- Audio output impedance: 4 ohms
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 16 V. 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. Make sure a problem is internal before disassembling the transceiver. DO NOT open the transceiver until it is disconnected from its power source. DO NOT force any of the variable components. Turn them slowly and smoothly. DO NOT short any circuits or electronic parts. An insulated tuning tool MUST be used for all adjustments. DO NOT keep power ON for a long time when the transceiver is defective. DO NOT transmit power into a signal generator or a sweep generator. ALWAYS connect a 40 dB ~ 50 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
Download MANUAL Service manual (PDF – 18.1 MB)
Icom IC-V220 Service Manual PDF: 18.1 MB. Guide for technicians to troubleshoot, repair, and maintain the IC-V220 model.
- Brand: Icom-ic-v220-service
- Model: MANUAL
- Type: Service manual
- File size: 18.1 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-v220-service MANUAL – Overview
The Icom IC-V220 is a reliable handheld transceiver designed for amateur radio enthusiasts and professional users alike. This device provides clear, efficient communication over VHF frequencies, making it ideal for outdoor activities, emergency communication, and daily two-way radio needs. The service manual offers detailed instructions on maintenance, repair, and optimal operation to ensure peak performance.
Main Features and Specifications
- Frequency Range: 136-174 MHz (VHF)
- Power Output: Up to 5 Watts
- Channel Capacity: 16 channels
- Battery Type: Rechargeable NiMH battery pack
- Display: LCD with backlight for easy reading
- Operating Voltage: 7.2 V DC
- Compact and lightweight design for portability
- Built-in CTCSS and DCS tone signaling
- Durable construction with weather-resistant housing
Basic Usage and Operation Tips
To operate the IC-V220, first ensure the battery is fully charged. Use the channel selector knob to choose the desired frequency channel. Press the Push-To-Talk (PTT) button to transmit your message and release it to listen. Adjust the volume and squelch controls to optimize audio clarity. Regularly update channel settings and tone codes to maintain compatibility with your communication group.
Troubleshooting and Maintenance
If you experience weak transmission or reception, check the antenna connection and battery charge level. Clean the battery contacts and speaker grill periodically to prevent signal interference. For persistent issues, refer to the service manual’s diagnostic flowcharts to identify faulty components. Avoid exposing the device to extreme temperatures or moisture to prolong its lifespan.
Safety Reminder
Always use the IC-V220 in accordance with local radio regulations and guidelines. Avoid transmitting near sensitive electronic equipment or in hazardous environments. Keep the device away from water and excessive heat, and never attempt repairs without proper knowledge and tools to prevent injury or damage.