1. Introduction
This manual provides essential information for the safe and effective use of your onerbl 18V AC/DC Adapter. This power supply is designed to provide reliable power to compatible devices, including JVC RD-HA3, RD-HA3B, RD-HA3W, RDHA3, RDHA3B, RDHA3W CD Portable Systems, USB Disc Digital Audio Players, Radio Boomboxes, and models AA-R1807, AA-R1802.
Please read this manual thoroughly before using the adapter and retain it for future reference.

Image 1.1: Front and side view of the onerbl 18V AC/DC Adapter. The adapter features a standard US two-prong plug on one side and a DC output cable on the other. The label on the front indicates "AC Adapter" and input specifications.
2. Safety Information
To ensure safe operation and prevent damage, observe the following safety precautions:
- Use the adapter only with devices that require an 18V DC input and have a compatible connector.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not attempt to open or modify the adapter. Refer all servicing to qualified personnel.
- Ensure the power outlet is easily accessible and unplug the adapter during electrical storms or when unused for long periods.
- Keep the adapter away from children.
- The adapter is designed with multiple protection features, including over-voltage, over-current, and short-circuit protection.

Image 2.1: Illustration of the adapter's built-in safety features, including icons for short-circuit protection, over-voltage protection, and over-current protection, indicating enhanced electrical safety.
3. Setup
- Verify Compatibility: Before connecting, ensure your device requires an 18V DC input and has a compatible power port. Check your device's original power adapter or specifications.
- Connect to Device: Insert the DC output plug of the onerbl adapter firmly into the power input port of your JVC CD Portable System or other compatible device.
- Connect to Power Outlet: Plug the AC input prongs of the adapter into a standard AC 100-240V wall outlet.

Image 3.1: The onerbl AC/DC adapter connected to a power strip, demonstrating a typical setup for powering a device. A laptop is visible in the background, indicating a common environment for use.
4. Operating Instructions
Once the adapter is correctly connected to both the device and a power outlet, your device should receive power. Follow your device's specific instructions for powering on and operation.
- The adapter provides continuous power to your device.
- If your device has a rechargeable battery, the adapter will also charge it while providing power, assuming the device supports this function.
- Always ensure the adapter is placed in a well-ventilated area during operation to prevent overheating.
5. Maintenance
- Cleaning: Disconnect the adapter from the power outlet and the device before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and moisture. Avoid tightly winding the cable to prevent damage.
- Inspection: Periodically inspect the adapter and its cable for any signs of damage, such as cuts, frayed wires, or bent prongs. If damage is found, discontinue use immediately.

Image 5.1: An illustration highlighting the durable construction of the adapter's cable, showing the internal copper wire and external PVC jacket, designed for longevity and reliable performance.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on or charging. |
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| Adapter feels warm during use. |
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7. Specifications
- Brand: onerbl
- Input Voltage: AC 100-240V, 50/60Hz (Worldwide AC Input)
- Output Voltage: DC 18V
- Cable Length: Approximately 76 inches (6.3 feet)
- Protection Features: Over Voltage Protection, Over Heat Protection, Short Circuit Protection

Image 7.1: Visual representation of the adapter's dimensions (approximately 2.6 inches long, 1.6 inches wide, 1.2 inches thick) and the cable length (76 inches).

Image 7.2: An illustration showing different cable lengths for power adapters. This specific onerbl adapter features a cable length of approximately 6.3 feet (76 inches).
8. Support
For technical assistance or inquiries regarding your onerbl 18V AC/DC Adapter, please contact your retailer or the manufacturer directly. Refer to your purchase documentation for contact details.
Manufacturer: Shenzhen Waweis Technology Co., Ltd