1. Producte acabatview
The Kebidu 12V LCD MP3 Decoder is a multi-functional digital audio player designed for car and vehicle electronics. It integrates Bluetooth 5.0 for stable wireless connections, an MP3/WMA/WAV/FLAC/APE decoder, FM radio, and a recording function. The unit supports USB drives and TF/SD cards up to 32GB for media playback and features an AUX input for external audio sources. A clear LCD screen displays information, including synchronized lyrics, and a remote control is included for convenient operation.

Figure 1.1: The Kebidu 12V LCD MP3 Decoder unit, its remote control, and included wiring harnesses.

Figura 1.2: Mésview of the multi-functional features including Bluetooth 5.0, USB, TF, AUX, and FM radio capabilities.
2. Especificacions tècniques
| IC de control principal | AC6921 |
| IC Bluetooth | AC6921 |
| Versió Bluetooth | 5.0 |
| Formats de música compatibles | MP3 / WMA / WAV / FLAC / APE (lossless) |
| Freqüència de ràdio FM | 87.5-107.5 MHZ |
| USB/TF Card Support | Màxim 32 GB |
| Font d'alimentació | DC 12V |
| Dimensions del panell | 112 mm (llargada) x 62 mm (amplada) |
| Board Depth | 22 mm |
| Dimensions del producte | 11.2 x 6.2 x 2.2 cm |
| Material | Plàstic, metall |
3. Components i controls
3.1 Main Unit Interface

Figure 3.1: Front panel layout and numbered functions.
- IR: Infrared receiver module for remote control.
- MIC: Microphone for call and recording functions.
- Interfície USB: Connect to a U disk (maximum support 32GB).
- Pantalla LCD: Displays synchronized lyrics and operational information.
- Ranura per a targeta SD: Connect to an SD memory card (maximum support 32GB).
- Interfície AUX: Audio input interface for external devices.
- Pom de volum: Controls the audio output volume.
- REC: Long press to start recording. Press again to stop recording and play the recorded file. Requires a storage device (U disk or TF card).
- REPETIR: Press once for single song repeat. Press again to cancel and play sequentially.
- PREV/: Short press for previous song. Long press for rewind.
- REPRODUCCIÓ/PAUSA: Short press to toggle play/pause. Long press for FM radio automatic station scan.
- SEGÜENT: Prem breument per a la següent cançó. Premeu llargament per avançar ràpidament.
- Mode: Switches between USB / TF / FM / AUX / BLUETOOTH modes.
3.2 Control remot
The included remote control provides convenient access to all major functions of the decoder unit from a distance.

Figure 3.2: The remote control unit.
4. Configuració i instal·lació
4.1 Esquema de cablejat
Refer to the diagram below for proper connection of power and audio signals. Ensure all connections are secure before powering on the device.

Figure 4.1: Back panel wiring connections.
- Connexió d'alimentació: Connect the 12V DC power positive (+) and negative (-) terminals to the corresponding inputs on the board.
- Entrada d'àudio: Connect external audio sources to the Audio Input L (Left), Audio Input R (Right), and Audio Input Ground terminals.
- Sortida d'àudio: Connecta't al teu amplifier or speakers via the Audio Output L (Left), Audio Output R (Right), and Audio Output Ground terminals.
- Radio FM Antenna: Connect an appropriate antenna to the Radio FM terminal for optimal radio reception.
4.2 Muntatge
The panel is surrounded by screw holes for easy mounting into a compatible enclosure or dashboard. The board depth is 22mm, so ensure sufficient space for installation.
5. Instruccions de funcionament
5.1 Funcionament bàsic
- Encès/apagat: The unit powers on automatically when 12V DC is supplied. There is no dedicated power button; power is controlled by the external power source.
- Control de volum: Rotate the volume knob on the front panel to adjust the audio output level.
5.2 Canvi de mode
Premeu el botó MODE button on the front panel or remote control to cycle through available modes: USB → TF → FM → AUX → BLUETOOTH.
Reproducció de targetes USB/TF de 5.3
- Insert a USB drive into the USB interface or a TF/SD card into the SD card slot. The unit will automatically detect and begin playing supported audio files.
- Reproduir/pausa: Premeu REPRODUCCIÓ/PAUSA per aturar o reprendre la reproducció.
- Cançó següent/anterior: Premeu SEGÜENT or ANTERIOR/ per saltar pistes.
- Avançar/rebobinar ràpid: Premsa llarga SEGÜENT for fast forward, long press ANTERIOR/ for rewind.
- Repetiu: Premeu REPETIR for single song repeat. Press again to cancel.
5.4 Funcionament Bluetooth
- Canvia la unitat a BLUETOOTH mode utilitzant el MODE button. The LCD screen will display "BT Disconnect" or similar.
- On your mobile device, search for Bluetooth devices and select the device named "BT-SPEAKER" or similar.
- Once paired, you can stream audio wirelessly from your device to the decoder.
- El MIC supports Bluetooth call functionality.
5.5 Ràdio FM
- Canvia la unitat a FM mode utilitzant el MODE botó.
- Automatic Station Scan: Premeu llargament el botó REPRODUCCIÓ/PAUSA button to initiate an automatic scan and save available FM stations.
- Emissores de sintonització: Utilitza el SEGÜENT i ANTERIOR/ botons per navegar per les estacions desades.

Figure 5.1: LCD screen displaying FM radio frequency.
5.6 Funció d'enregistrament
- Ensure a USB drive or TF card is inserted into the unit.
- Premeu llargament el botó REC botó per començar a gravar.
- Premeu el botó REC button again to stop the recording and automatically play the recorded file.
5.7 Lyrics Display
The LCD screen supports synchronized lyrics display for compatible audio files. Ensure your audio files have embedded lyrics for this feature to work.
6. Manteniment
- Mantingueu el dispositiu net netejant-lo amb un drap suau i sec. Eviteu utilitzar productes de neteja o dissolvents abrasius.
- Do not expose the unit to excessive moisture, dust, or extreme temperatures.
- Assegureu-vos que hi hagi una ventilació adequada al voltant de la unitat durant el funcionament.
7. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Incorrect power connection; insufficient voltage. | Check 12V DC power supply and wiring connections. Ensure correct polarity. |
| Sense sortida de so | Incorrect audio output connection; volume too low; wrong mode selected. | Verify audio output wiring. Increase volume. Press MODE button to select correct source. |
| Bluetooth no connectat | Unit not in Bluetooth mode; device not discoverable; interference. | Switch to Bluetooth mode. Ensure Bluetooth is enabled on your device and it's in pairing mode. Move closer to the unit. |
| USB/TF card not reading | Unsupported format; card/drive corrupted; capacity exceeded. | Assegureu-vos files are MP3/WMA/WAV/FLAC/APE. Check card/drive for errors. Ensure capacity is not over 32GB. |
| Mala recepció de ràdio FM | No antenna connected; weak signal. | Connect an external FM antenna. Try repositioning the antenna or the unit. |
8. Garantia i Suport
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or the manufacturer's customer service department. Refer to the product packaging or retailer's weblloc web per obtenir informació de contacte específica.
