Zerone 12V Car Audio Bluetooth MP3 Decoder Board User Manual

1. Introduction

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.

Key features include:

• Bluetooth 5.0 for wireless audio streaming.
• 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.

Image 1.1: Front view of the Zerone Bluetooth MP3 Decoder Board, showing the display, USB port, TF card slot, AUX input, and control buttons.

2. Package Contents

Please verify that all items are present in the package:

• 1 x Zerone MP3 Decoder Module
• 1 x Remote Control
• 4 x Wiring Cables

Image 2.1: The Zerone MP3 Decoder Board, its remote control, and included wiring cables.

3. Setup and Wiring

Careful wiring is essential for proper function. Ensure the device is powered off before making any connections.

3.1 Power Supply Connection

• 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

• Audio Output: Connect L-OUT (Left Output) and R-OUT (Right Output) to your audio amplifier or speakers. AGND is the audio ground.
• Audio Input (AUX): For external audio sources, connect L-IN (Left Input) and R-IN (Right Input) to the audio output of your external device.

3.3 FM Antenna Connection

• 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 amplifier.

4. Operating Instructions

The decoder board can be operated using the onboard buttons or the included infrared remote control.

4.1 Power On/Off

• Connect the power supply to turn on the module. Disconnect to power off.

4.2 Mode Selection

• Press the 'MODE' button on the board or remote to cycle through available modes: Bluetooth, USB, TF Card, FM Radio, and AUX.

4.3 Bluetooth Pairing

1. Switch the module to Bluetooth mode. The display will indicate 'BT' or similar.
2. On your mobile device, search for Bluetooth devices and select 'BT-SPEAKER'.
3. 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 Card Playback

• 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.

4.5 FM Radio

• 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.

4.6 AUX Input

• 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 Volume Control

• Adjust the volume using the 'VOL-' and 'VOL+' buttons on the board or the remote control.

4.8 Power-off Memory

• 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. Maintenance

To ensure the longevity and optimal performance of your decoder board, follow these maintenance guidelines:

• Keep the device dry. Avoid exposure to moisture or liquids.
• 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. Troubleshooting

If you encounter issues with your Zerone MP3 Decoder Board, refer to the following common problems and solutions:

• No Power:
  • 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).
• No Audio Output:
  • Ensure the audio output cables (L-OUT, R-OUT, AGND) are correctly connected to your amplifier or speakers.
  • 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.
  • Search for 'BT-SPEAKER' in your device's Bluetooth settings.
  • Try restarting both the decoder board and your mobile device.
• Buzzing Sound:
  • A buzzing sound can sometimes indicate power supply issues or grounding problems. Ensure proper grounding.
  • Verify the input 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.
• USB/TF Card Not Playing:
  • Ensure the 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. Specifications

8. Warranty and Support

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.