The Icom service manual for the BC-119N Desktop Charger and BC-121N Multi-Charger provides detailed instructions on setup, operation, and troubleshooting, including specifications, circuit descriptions, and adjustment procedures. It emphasizes safety precautions such as avoiding exposure to liquids and ensuring correct power supply connections to prevent hazards.
Manual Overview
The Icom BC-119N and BC-121N service manual provides detailed guidance for servicing these desktop and multi-chargers. It emphasizes the importance of using appropriate power supplies, warning against connections exceeding specified voltages to prevent fire hazards and electric shocks. Troubleshooting begins by ensuring issues are internal before disassembly, and power should be disconnected prior to opening the chassis. Calibration involves careful adjustment of variable components using insulated tools to avoid short circuits. The manual outlines the DC-DC converter circuit, which regulates charging voltage through step-up and step-down converters, controlled by the CPU and switching regulators. The constant-current circuit ensures stable output, with current detection and regulation managed by specific components. Error diagnostics are facilitated by understanding the circuit’s operation, with voltage and current pathways clearly described. Board-level guidance includes detailed layouts and block diagrams, aiding in component identification and repair processes. The manual stresses the importance of following test equipment instructions to avoid damage during diagnostics and adjustments.
Quick Issues Covered
- Diagnose power-up failures with step-up/down convertor circuits.
- Identify error codes from CPU port allocations for BC-119N.
- Calibrate constant-current circuit using IC4 and IC5 components.
Overview
This service manual provides the latest service information for the BC-119N Desktop Charger and BC-121N Multi-Charger.
Specifications
- BC-119N
- Power supply requirement: 12 V to 20 V DC (negative ground)
- Dimensions (projections not included): 115(W)x60(H)x103(D) mm; 4 12(W) x 2 14(H) x 4 1A6(D) in.
- Weight (adapters not included): 200 g; 7.1 0z; 0.4 lbs
- BC-121N
- Power supply requirement: 12 V to 16 V DC (negative ground)
- Dimensions (projections not included): 8300(W)x93(H)x197(D) mm; 11 13A6(W) x 3 21482(H) x 7 34(D) in.
- Weight (adapters not included): 1.4 kg; 49.4 oz; 3.1 Ibs
- COMMON
- Rapid charging current: 840 mA +10 %, 670 mA +10 %, 540 mA +10 %, 420 mA+0 %
- Trickle charging current: 30 MA +10 %
- Constant voltage (Lithium-ion battery): 8.4 V +0.1 V
- Electrostatic durability: Air discharge 8 kV, Contact discharge 4kV
- Usable temperature range: +10°C to +40°C; +50°F to +104°F
- Rapid charging time: 1-2 hours.
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 charger to an AC adapter or a DC power supply that uses more than 20 V (BC-121N: 16 V) as it could cause a fire hazard and/or electric shock. DO NOT expose the charger to rain, snow, or any liquids. DO NOT reverse the polarities of the power supply when connecting the charger.
Download MANUAL Service manual (PDF – 586.0 KB)
Icom BC-119/BC-121 Service Manual PDF: Assists technicians in troubleshooting and calibrating Icom charging units. File size: 586.0 KB.
- Brand: Icom-bc-119-bc-121-service
- Model: MANUAL
- Type: Service manual
- File size: 586.0 KB
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-bc-119-bc-121 Service Manual Overview
The Icom-bc-119-bc-121 is a reliable and efficient battery charger designed specifically for Icom two-way radios. This device ensures quick and safe charging of your radio batteries, helping maintain optimal performance and extending battery life. Ideal for both professional and personal use, the BC-119 and BC-121 models support various Icom battery types, making them essential accessories for communication equipment users.
Main Features and Specifications
- Compatible with multiple Icom battery models
- Fast and efficient charging capability
- LED indicators for charging status
- Compact and durable design for portability
- Automatic shut-off to prevent overcharging
- Input voltage: AC 100-240V, 50/60Hz
- Output voltage and current tailored to battery specifications
Basic Usage and Operation Tips
To use the Icom-bc-119-bc-121 charger, connect the charger to a suitable power outlet and insert the compatible battery firmly into the charging slot. The LED indicator will show the charging status—typically red for charging and green when fully charged. Avoid removing the battery before the indicator signals full charge to ensure battery health. For best results, charge batteries at room temperature and avoid charging immediately after heavy use or exposure to extreme temperatures.
Troubleshooting and Maintenance
If the charger fails to power on or the LED indicators do not light up, check the power connection and try a different outlet. For batteries that do not charge properly, inspect the battery contacts for dirt or corrosion and clean gently with a dry cloth. Avoid using damaged or swollen batteries with the charger. Regularly inspect the charger and cables for wear and tear, and replace any damaged components to maintain safe operation.
Safety Reminder
Always use the Icom-bc-119-bc-121 charger in a well-ventilated area and avoid exposure to water or moisture. Do not attempt to disassemble or modify the charger, as this could lead to electric shock or fire hazards. Keep the charger away from flammable materials and out of reach of children. Following these safety guidelines will help ensure safe and effective charging of your Icom radio batteries.