KFD A3390
KFD 15V AC Adapter User Manual
Model: A3390 | Brand: KFD
1. Introducció
Welcome to the KFD 15V AC Adapter User Manual. This document provides essential information for the safe and effective use of your new power adapter. Please read this manual thoroughly before use and retain it for future reference. This adapter is designed to provide reliable power to compatible devices, ensuring stable and efficient charging.
2. Producte acabatview
The KFD 15V AC Adapter is a high-quality power supply unit designed for various portable electronic devices. It features robust construction and multiple safety protections to ensure reliable performance.
2.1 Components
- AC Adapter Unit: The main power brick that converts AC to DC power.
- Cable de sortida de CC: Permanently attached cable with a barrel connector for device input.
- Endoll d'entrada de CA: Integrated two-prong plug for connecting to a wall outlet.

Image: The KFD 15V AC Adapter, showing the main unit, attached DC output cable, and AC input plug.
2.2 Característiques clau
- Entrada: 100-240V ~ 50/60Hz (Universal AC input)
- Sortida: 15V DC
- Certificacions de seguretat: UL / CE / FCC / RoHS certified for quality and safety standards.
- Proteccions integrades: Més del voltage Protection (OVP), Over Current Protection (OCP), Short Circuit Protection (SCP).

Image: Diagram illustrating the use of high-quality internal components for stable power delivery and long-term reliability, highlighting UL listing.
2.3 Compatibilitat
This adapter is compatible with the following devices:
- Anker Soundcore Rave Mini A3390, A3390Z11, AK-A3390Z11, AKA3390Z11, A3390H12 PartyCast 80W IPX7 Waterproof Bluetooth Portable Speaker
- Anker Soundcore Trance A3393, A3393011, AK-A3393011, AKA3393011, Mega A3392, A3392H11 Outdoor Bluetooth Waterproof Wireless Speaker
- ION Audio Cornerstone Portable Bluetooth Speaker ppp1160, Keystone Wireless Mountable Solar Outdoor Speaker, Solar Stone Garden Speaker

Image: The KFD 15V AC Adapter connected to an Anker Soundcore speaker, demonstrating its use.
3. Configuració
Follow these steps to set up your KFD 15V AC Adapter:
- Pas 1: desembalatge
Carefully remove the adapter from its packaging. Ensure that the adapter unit and its attached cable are present and undamaged. - Step 2: Connecting to Power Outlet
Insert the two-prong AC input plug of the adapter firmly into a standard 100-240V wall outlet. Ensure the outlet is functioning correctly. - Pas 3: connexió al dispositiu
Locate the DC input port on your compatible speaker or device. Insert the DC barrel connector of the KFD adapter firmly into this port. Ensure a secure and snug connection.

Image: The KFD 15V AC Adapter plugged into a wall outlet, ready for use.
4. Instruccions de funcionament
Once the KFD 15V AC Adapter is correctly connected to both the power outlet and your device, it will automatically begin supplying power or charging your device.
- Ensure your device is powered off or in a charging-compatible state as per its own user manual for optimal charging.
- The adapter is designed for continuous power supply. No specific user interaction is required beyond connecting and disconnecting.
5. Informació de seguretat
The KFD 15V AC Adapter is equipped with advanced safety features to protect your devices and ensure user safety:
- Més del voltage Protecció (OVP): Automatically cuts off power if the output voltage exceeds a safe limit, preventing damage to your device.
- Protecció contra sobrecorrent (OCP): Protects against excessive current flow, safeguarding both the adapter and the connected device.
- Protecció contra curtcircuits (SCP): Detects and prevents damage from short circuits, ensuring stable operation.

Image: Visual representation of the charging safety multiprotection features, including chip quality, ABC+PC material, fire retardant properties, and heat dissipation.
Precaucions generals de seguretat:
- Use the adapter only in dry, indoor environments. Avoid exposure to water, moisture, or high humidity.
- Do not expose the adapter to extreme temperatures or direct sunlight.
- Ensure adequate ventilation around the adapter during use. Do not cover it with cloths or other materials.
- Do not attempt to disassemble, modify, or repair the adapter. Refer to qualified service personnel for any issues.
- Unplug the adapter from the wall outlet when not in use for extended periods or during electrical storms.
6. Manteniment
Proper maintenance ensures the longevity and optimal performance of your KFD 15V AC Adapter.
6.1 Neteja
- Always disconnect the adapter from both the power outlet and your device before cleaning.
- Wipe the exterior of the adapter with a soft, dry, lint-free cloth.
- Do not use liquid cleaners, aerosols, or abrasive materials, as these can damage the adapter.
6.2 Emmagatzematge
- Store the adapter in a cool, dry place away from direct sunlight and moisture.
- Avoid tightly winding the cable around the adapter or bending it sharply, as this can cause internal wire damage.
7. Solució De Problemes
If you encounter issues with your KFD 15V AC Adapter, refer to the following troubleshooting guide:
Issue: Device not charging or powering on when connected to the adapter.
| Causa possible | Solució |
|---|---|
| Incompatibilitat: The device's power requirements (voltage/current) or connector type do not match the adapter. | Verificar la compatibilitat: Double-check your device's original power specifications (voltage, current, and connector type) against the adapter's output (15V DC). Ensure your device model is listed in the compatibility section of this manual. |
| Connexió solta: The adapter is not securely plugged into the wall outlet or the device. | Comproveu les connexions: Ensure the adapter's AC plug is fully inserted into a working wall outlet. Confirm the DC barrel connector is firmly seated in your device's input port. Try a different wall outlet. |
| Faulty Adapter/Cable: The adapter or its cable is damaged. | Inspeccionar per danys: Visually inspect the adapter unit and the entire length of the cable for any cuts, kinks, fraying, or unusual bulges. If any damage is found, discontinue use immediately and replace the adapter. |
| Mal funcionament del dispositiu: The issue lies with the device itself, not the adapter. | Dispositiu de prova: If possible, test your device with its original charger or another known-good, compatible power adapter. If the device still does not function, consult your device's manufacturer for support. |

Image: A visual guide explaining how to find the right AC adapter by confirming output power/current and DC connector type.
8. Especificacions
| Especificació | Valor |
|---|---|
| Entrada Voltage | 100-240V AC |
| Freqüència d'entrada | 50/60Hz |
| Vol. De sortidatage | 15V DC |
| Número de model de l'article | A3390 |
| Pes de l'article | 5.9 unces (0.17 quilograms) |
| Color | Negre |
| Tipus de connector | AC power plug (input), DC barrel connector (output) |
| Fabricant | Shenzhen Huikeyuan Electronic Technology Co.,Ltd |
9. Garantia i Suport
9.1 Informació de la garantia
KFD products are backed by a comprehensive warranty to ensure your satisfaction:
- 30 Days Free Exchange: If you experience any issues within 30 days of purchase, you are eligible for a free exchange.
- Garantia de 36 mesos: The KFD 15V AC Adapter is covered by a 36-month (3-year) warranty from the date of purchase, covering manufacturing defects and malfunctions under normal use.
9.2 Atenció al client
For any questions, concerns, or technical assistance regarding your KFD 15V AC Adapter, please contact KFD customer support. You can typically find contact information on the product packaging, the retailer's website where you purchased the product, or KFD's official brand store online.
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