1. Okwu mmalite
This manual provides detailed instructions for the installation, operation, and maintenance of your Zerone 12V Car Audio Bluetooth MP3 Decoder Board. This module is designed to upgrade conventional audio equipment, enabling playback of MP3, WMA, and WAV formats through multiple input options.
Atụmatụ gụnyere:
- Bluetooth 5.0 maka nkwanye ụda ikuku ikuku.
- Support for USB, TF Card, and AUX input.
- Integrated FM radio function.
- Digital color screen display for easy monitoring.
- Infrared remote control for convenient operation.
- Power-off memory function to resume playback.

Foto 1.1: N'ihu view of the Zerone Bluetooth MP3 Decoder Board, showing the display, USB port, TF card slot, AUX input, and control buttons.
2. Ihe ngwugwu
Biko chọpụta na ihe niile dị na ngwugwu:
- 1 x Zerone MP3 Decoder Module
- 1 x Njikwa anya
- 4 x Wiring Cables

Image 2.1: The Zerone MP3 Decoder Board, its remote control, and included wiring cables.
3. Ntọlite na Wiring
Careful wiring is essential for proper function. Ensure the device is powered off before making any connections.
3.1 Njikọ na-enye ike
- The module requires a DC 6V-12V power supply.
- Connect the positive pole of the power supply to VCC(+) and the negative pole to GND(-).
3.2 Audio Input/Output Connections
- Mmepụta ọdịyo: Connect L-OUT (Left Output) and R-OUT (Right Output) to your audio amplifier or speakers. AGND is the audio ground.
- Ntinye odiyo (AUX): For external audio sources, connect L-IN (Left Input) and R-IN (Right Input) to the audio output of your external device.
Njikọ Antenna 3.3 FM
- Connect an appropriate FM antenna to the designated FM Antenna port for optimal radio reception.

Image 3.1: Detailed wiring diagram showing connections for power, audio input, audio output, and FM antenna.

Image 3.2: Diagram illustrating input power (DC5V-12V) and audio output connections to an ampna -emegharị ihe.
4. Ntuziaka ọrụ
The decoder board can be operated using the onboard buttons or the included infrared remote control.
4.1 Gbanyụọ ma ọ bụ gbanyụọ
- Connect the power supply to turn on the module. Disconnect to power off.
4.2 Nhọrọ ọnọdụ
- Press the 'MODE' button on the board or remote to cycle through available modes: Bluetooth, USB, TF Card, FM Radio, and AUX.
4.3 Njikọ Bluetooth
- Switch the module to Bluetooth mode. The display will indicate 'BT' or similar.
- On your mobile device, search for Bluetooth devices and select 'BT-SPEAKER'.
- Once paired, you can stream audio wirelessly from your device.

Image 4.1: Illustration of pairing a smartphone with the 'BT-SPEAKER' device to play music.
4.4 USB / TF Kaadị ịkpọghachi
- Insert a USB drive or TF card containing MP3, WMA, or WAV audio files into the respective slot. The module will automatically switch to the corresponding mode and begin playback.
Igwe redio FM 4.5
- In FM mode, press the 'SCAN' button to automatically search and save available radio stations.
- Use the 'VOL-' and 'VOL+' buttons (or previous/next track buttons on the remote) to navigate between saved stations.
Ntinye AUX 4.6
- Connect an external audio device (e.g., smartphone, MP3 player) to the AUX input port using a 3.5mm audio cable.
- Switch the module to AUX mode.
4.7 Njikwa olu
- Adjust the volume using the 'VOL-' and 'VOL+' buttons on the board or the remote control.
Ebe Nchekwa Ike 4.8
- The module retains the last played song and volume level when powered off, resuming from that point upon restart.

Image 4.2: Visual representation of the multi-function capabilities including music player, USB player, AUX audio input, FM radio, and TF card support.
5. Nlekọta
To ensure the longevity and optimal performance of your decoder board, follow these maintenance guidelines:
- Debe ngwaọrụ akọrọ. Zere ikpughe na mmiri ma ọ bụ mmiri mmiri.
- Clean the surface with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Avoid exposing the module to extreme temperatures or direct sunlight for extended periods.
- Handle the wiring connections carefully to prevent damage.
6. Nchọpụta nsogbu
If you encounter issues with your Zerone MP3 Decoder Board, refer to the following common problems and solutions:
- Enweghị ike:
- Check all power connections to ensure they are secure and correctly wired (VCC+ to positive, GND- to negative).
- Verify that the power supply is providing the correct voltage (DC 6V-12V).
- Enweghị mmepụta ọdịyo:
- Ensure the audio output cables (L-OUT, R-OUT, AGND) are correctly connected to your amplifier ma ọ bụ ọkà okwu.
- Check the volume level on both the decoder board and your connected audio system.
- Confirm that the correct input mode (Bluetooth, USB, TF, AUX, FM) is selected.
- Bluetooth Not Connecting/Pairing:
- Ensure the decoder board is in Bluetooth mode.
- Make sure your mobile device's Bluetooth is enabled and within the 15-meter receiving distance.
- Chọọ maka 'BT-SPEAKER' in your device's Bluetooth settings.
- Try restarting both the decoder board and your mobile device.
- Ụda mkpọtụ:
- A buzzing sound can sometimes indicate power supply issues or grounding problems. Ensure proper grounding.
- Nyochaa ntinye voltage is stable and within the recommended DC 6V-12V range. In some cases, a lower voltage (e.g., around 3V-5V) might reduce noise, but this is outside the specified operating range and may affect performance.
- Kaadị USB/TF anaghị egwu egwu:
- Gbaa mbọ hụ na files on the USB drive or TF card are in a supported format (MP3, WMA, WAV).
- Check that the USB drive or TF card is inserted correctly and fully.
- Try a different USB drive or TF card to rule out media issues.
7. Nkọwapụta
| Njirimara | Nkọwapụta |
|---|---|
| Nọmba nlereanya | Zerone0esoq1dkuv |
| Ụdị Bluetooth | 5.0 |
| Ogologo nnata | Ruo mita 15 (ụkwụ 49.21) |
| Ịnye ọkụ | DC 6V-12V |
| Ụdị ọdịyo akwadoro | MP3, WMA, WAV |
| Nhọrọ njikọta | Bluetooth, USB, Kaadị TF, AUX, Redio FM |
| Akụkụ (L x W x H) | Ihe dị ka 92 x 41 x 21 mm (3.62 x 1.61 x 0.83 sentimita asatọ) |
| Ibu Ibu | 1.41 ounces |
| Onye nrụpụta | Zerone |
8. Akwụkwọ ikike na nkwado
For warranty information and technical support, please refer to the documentation provided at the point of purchase or contact your retailer. The manufacturer is Zerone.