The Icom IC-M87 VHF Marine Transceiver service manual provides detailed instructions for setup, operation, and troubleshooting, including specifications, circuit descriptions, and disassembly instructions. It also includes safety warnings, such as avoiding exposure to liquids and ensuring correct power supply connections, to prevent damage to the transceiver.
Manual Overview
The Icom IC-M87 VHF Marine Transceiver service manual provides detailed guidance for troubleshooting, diagnostics, calibration, and board-level repairs. It emphasizes the importance of ensuring a problem is internal before disassembling the transceiver and advises against opening the device while connected to a power source. The manual warns against applying excessive RF signals to the antenna connector to prevent damage. For calibration and adjustments, it recommends using an insulated tuning tool and cautions against forcing variable components. The manual includes error codes and diagnostic procedures to help identify issues. It provides board-level guidance with sections dedicated to the receiver, transmitter, PLL, and power supply circuits, along with CPU port allocations. The manual also covers software adjustments and provides detailed board layouts for the charger, VR, connector, main, and logic units. Additionally, it includes a parts list and ordering instructions, emphasizing the need for specific details like order numbers and component names.
Quick Issues Covered
- Diagnose power-up failures due to incorrect voltage supply.
- Calibrate RF output power for optimal transmission performance.
- Trace circuits using detailed schematics for troubleshooting.
Overview
This service manual provides the latest service information for the IC-M87 VHF Marine Transceiver, including specifications, disassembly instructions, circuit descriptions, and parts lists. It covers various models and versions, detailing power requirements, frequency coverage, and other technical specifications. The manual also includes repair notes and ordering parts instructions.
Specifications
- Frequency coverage: TX: 156.000 MHz—161.450 MHz, RX: 156.000 MHz—163.450 MHz [MARINE]; TX/RX: 146.000 MHz-174.000 MHz [PMR]
- Number of free channels: 22 channels
- Type of emission: 16KOG3E (Wide; 25 kHz) [MARINE] for ATIS; 16KOFSE (Wide, 25 kHz), 8K50F3E (Narrow, 12.5 kHz) [PMR]; 14KOFS3E (Wide, 20 kHz), 8K50F3E (Narrow, 12.5 kHz) [PMR]
- Antenna impedance: Type SMA/ 50 Q
- Power supply requirement: BP-227 (7.2 V DC, negative ground)
- Current drain (approx.): Transmit at High (5.0Wor1.0W) 1.6 A[5.0 W type], 0.7 A[1.0 W type]; at Middle (3.0 W) 1.2 A[5.0 W type] only; at Low (1.0Wor0.5W) 0.7 A[5.0 W type], 0.6 A [1.0 W type]; Receive at maximum audio 200 mA; at stand-by 20 mA
- Frequency stability: +1.5 kHz
- Usable temperature range: -15°C to +55°C [MARINE]; -25°C to +55°C [PMR]
- Dimensions (projections not included): 62(W) x 97(H) x 39(D) mm; 2 7“A6(W) x 3 1346(H) x 1 1742(D) in.
- Weight (with antenna, BP-227): 280 g; 9.88 oz; 0.62 Ib
- RF output power (with BP-227): 5 W type: 5 W/3 W/1 W (High/ Middle/ Low) [MARINE], [PMR]; 1 W type: 1 W/ 0.5 W (High / Low) [MARINE]
- Modulation system: Variable reactance frequency modulation
- Maximum frequency deviation: +5.0 kHz (Wide; 25 kHz) [MARINE]; +5.0 kHz (Wide; 25 kHz), +2.5 kHz (Narrow; 12.5 kHz) [PMR]; +4.0 kHz (Wide; 20 kHz), +2.5 kHz (Narrow; 12.5 kHz) [PMR]
- Spurious emissions: 0.25 UW < 2 GHz, 1.0 uW > 2 GHz
- Adjacent channel power: 70 dB [MARINE], 70 dB (Wide; 25 kHz) [PMR], 60 dB (Narrow; 12.5 kHz) [PMR]
- Residual modulation: 40 dB [MARINE], 40 dB (Wide) [PMR], 34 dB (Narrow) [PMR]
- Audio harmonic distortion: Less than 10 % at 60% deviation
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 8.3 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 the transceiver 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 GB or 50 dB attenuator between the transceiver and a deviation meter or spectrum analyser when using such test equipment. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
Download MANUAL Service manual (PDF – 5.6 MB)
Icom IC-M87 Service Manual PDF: Troubleshoot and repair Icom IC-M87 radios. File size: 5.6 MB.
- Brand: Icom-ic-m87-service
- Model: MANUAL
- Type: Service manual
- File size: 5.6 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-M87 Service Manual Overview
The Icom IC-M87 is a professional-grade marine VHF transceiver designed for reliable communication on the water. This device provides clear and effective voice transmission, ensuring safety and coordination during marine operations. The service manual offers detailed instructions for maintenance, repair, and troubleshooting to keep the IC-M87 operating at peak performance.
Main Features and Specifications
- Frequency Range: 156.000 to 163.425 MHz
- Output Power: 25 Watts (high), 1 Watt (low)
- Waterproof Construction: IPX7 standard for submersion up to 1 meter
- Large, easy-to-read LCD display with adjustable backlight
- 16 Marine Channels plus 10 programmable memory channels
- Built-in DSC (Digital Selective Calling) for emergency alerts
- Battery Life: Up to 12 hours of continuous operation
- Compact and ergonomic design for comfortable handheld use
Basic Usage and Operation Tips
To operate the IC-M87, power on the device and select the desired marine channel using the channel selector knob. Adjust the volume and squelch controls to optimize audio clarity. Use the push-to-talk (PTT) button to transmit your message, and release it to listen. Regularly check the battery level indicator to ensure sufficient power during use. For emergency situations, utilize the DSC function by pressing the dedicated distress button.
Troubleshooting and Maintenance Notes
If you experience poor audio quality or transmission issues, first verify antenna connections and battery charge. Clean the microphone and speaker grills to prevent obstructions. In case of persistent problems, consult the service manual for detailed diagnostic procedures and circuit diagrams. Regularly inspect the device for physical damage and ensure all seals are intact to maintain waterproof integrity.
Safety Reminder
Always operate the Icom IC-M87 in accordance with local marine communication regulations. Avoid using the device near explosive gases or in hazardous environments. Ensure the device is properly secured to prevent accidental drops or water ingress. Regularly inspect and maintain the unit to guarantee safe and reliable operation while at sea.