1. Introduction
Thank you for choosing the Nunoo 8-Core Android 12 Car Stereo. This advanced multimedia system is designed to enhance your driving experience in 2005-2011 BMW 3 Series (E90/E92/E93) vehicles. Featuring a 9-inch IPS touchscreen, wireless CarPlay and Android Auto, Bluetooth 5.2, AM/FM/RDS radio, and support for a backup camera, this unit provides comprehensive entertainment and navigation capabilities. Please read this manual thoroughly before installation and operation to ensure proper use and optimal performance.
This manual provides detailed instructions for installation, operation, maintenance, and troubleshooting.
2. What's in the Box
Carefully unpack all components and check against the list below:
- Car Radio (1280*720) with Frame x1
- User Manual x1
- Cleaning Cloth x1
- Power Cord x1
- USB 4Pin Cable x1
- USB 6Pin Cable x1
- GPS Antenna x1
- AHD 1080P Rear View Camera x1
Figure 2.1: Included Accessories and Wiring Diagram. This image displays the various cables, antennas, and the backup camera included with the car stereo, along with a detailed wiring diagram for connection points.
3. Setup and Installation
Professional installation is highly recommended for this car stereo system. Incorrect installation can lead to damage to the unit or your vehicle's electrical system. Ensure the vehicle's battery is disconnected before beginning installation.
3.1 Wiring Connections
Refer to the wiring diagram provided in the 'What's in the Box' section (Figure 2.1) and the labels on the cables for correct connections. Key connections include:
- Power Cable: Connect to the vehicle's power harness. Ensure ACC, B+, and Ground are correctly matched.
- USB Cables (4Pin & 6Pin): For connecting USB devices, such as flash drives or for wired CarPlay/Android Auto.
- GPS Antenna: Mount in a location with a clear view of the sky for optimal signal reception.
- AHD Rear View Camera: Connect the camera's video output to the 'CAM IN' input on the stereo. Ensure the reverse trigger wire is connected to the vehicle's reverse light signal.
- RCA Cables: For external audio/video input/output, including subwoofer output.
- Steering Wheel Control (SWC) Wires: Connect to your vehicle's SWC wires for button functionality.
3.2 Initial Power-On and Basic Settings
After installation, reconnect the vehicle's battery and power on the unit. The system will boot into the Android 12 operating system.
- Language Settings: Navigate to Settings > System > Languages & input to select your preferred language.
- Wi-Fi Connection: Go to Settings > Network & internet > Wi-Fi to connect to a Wi-Fi network for internet access and app downloads.
- Date and Time: Set the correct date and time in Settings > System > Date & time.
3.3 Setting Car Logo
You can customize the boot logo to match your vehicle's brand. This is typically found in the factory settings menu.
Video 3.1: Car Stereo Set Logo. This video demonstrates how to access the factory settings, enter the password, and select a car brand logo for the stereo's boot screen.
4. Operating Instructions
4.1 Android 12 System Overview
The unit runs on Android 12, providing a familiar smartphone-like interface. You can download apps from the Google Play Store, customize widgets, and navigate through various functions using the touchscreen.
Figure 4.1: Main Interface of the Nunoo Car Stereo. This image shows the home screen with a clock, music player, and various application icons, demonstrating the user-friendly interface.
4.2 Wireless CarPlay & Android Auto
Connect your smartphone wirelessly for seamless integration of navigation, music, calls, and messages.
- For CarPlay (iPhone): Ensure Bluetooth and Wi-Fi are enabled on your iPhone. Pair your iPhone with the car stereo via Bluetooth. Once paired, CarPlay should automatically launch.
- For Android Auto (Android Phone): Ensure Bluetooth and Wi-Fi are enabled on your Android phone. Pair your phone with the car stereo via Bluetooth. Android Auto should launch automatically.
- Voice Control: Use Siri or Google Assistant for hands-free operation.
4.3 Mirror Link (Wireless/Wired)
Project your smartphone screen onto the car stereo display.
- Wireless: Follow the on-screen instructions in the 'Mirror Link' app on the stereo to connect your phone via Wi-Fi.
- Wired: Connect your phone to one of the USB ports using a data cable.
Figure 4.2: Wireless CarPlay, Android Auto, and Mirror Link. This image illustrates the various smartphone integration options, allowing users to connect their devices for navigation, media, and more.
4.4 IPS Touchscreen Operation
The 9-inch IPS touchscreen offers a responsive and clear display with 1280*720 resolution. Use standard touch gestures (tap, swipe, pinch-to-zoom) to navigate the interface.
Figure 4.3: IPS Touchscreen Display Quality. This image compares different screen resolutions, emphasizing the clarity and detail provided by the 1280x720 IPS display.
4.5 AM/FM/RDS Radio
Access your favorite radio stations with the built-in tuner.
- Scanning: Use the auto-scan function to find and save available stations.
- RDS (Radio Data System): Displays station information, song titles, and traffic announcements where available.
Figure 4.4: AM/FM/RDS Radio Interface. This image shows the radio application with frequency display and RDS information.
4.6 Bluetooth 5.2
Connect your phone for hands-free calling and audio streaming.
- Pairing: Enable Bluetooth on your phone and search for the car stereo. Select the device and confirm the pairing code.
- Hands-Free Calling: Make and receive calls directly from the stereo interface.
- Audio Streaming: Play music from your phone through the car's speakers.
4.7 Steering Wheel Control (SWC)
If properly connected during installation, you can control basic functions (volume, track skip, mode) using your vehicle's steering wheel buttons.
- Learning Function: Access the SWC learning menu in the settings to map your steering wheel buttons to the stereo's functions.
4.8 AHD Reversing Camera
When the vehicle is shifted into reverse, the stereo automatically displays the view from the connected AHD backup camera, aiding in safe parking and maneuvering.
4.9 Audio Settings (16EQ, DSP, Subwoofer)
Customize your audio experience with advanced sound controls.
- 16-Band Equalizer (16EQ): Adjust specific frequency bands to fine-tune the sound output.
- DSP (Digital Signal Processor): Provides advanced audio processing for improved sound quality and staging.
- Subwoofer Control: Adjust subwoofer output levels and crossover frequencies.
Figure 4.5: Audio Equalizer and DSP Settings. This image displays the detailed 16-band equalizer and Digital Signal Processor (DSP) controls for audio customization.
4.10 Split Screen Function
Run two applications simultaneously on the screen, such as navigation and music player, for enhanced multitasking.
5. Maintenance
- Cleaning: Use the provided cleaning cloth or a soft, dry cloth to wipe the screen and unit. Avoid abrasive cleaners or solvents.
- Software Updates: Periodically check for software updates via Wi-Fi in the system settings to ensure optimal performance and access to new features.
- Avoid Extreme Temperatures: Do not expose the unit to extreme heat or cold, as this can affect its lifespan and performance.
6. Troubleshooting
If you encounter issues, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | Incorrect wiring, blown fuse, vehicle battery issue | Check power cable connections (ACC, B+, Ground). Verify vehicle fuses. Ensure battery is charged. |
| No sound output | Speaker wires disconnected, volume too low, audio settings incorrect | Check speaker wire connections. Increase volume. Verify audio settings (e.g., balance, fader, mute). |
| CarPlay/Android Auto not connecting | Bluetooth/Wi-Fi off, phone not paired, app issues | Ensure Bluetooth and Wi-Fi are enabled on both devices. Re-pair the phone. Restart both the phone and the car stereo. Update phone apps. |
| Backup camera not displaying | Camera wiring incorrect, reverse trigger not connected | Check camera video input and reverse trigger wire connections. Ensure camera is powered. |
| Steering Wheel Controls not working | SWC wires not connected, learning function not configured | Verify SWC wire connections. Perform the SWC learning function in the stereo settings. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Nunoo |
| Vehicle Service Type | Car (2005-2011 BMW 3 Series E90/E92/E93) |
| Screen Size | 9 Inches |
| Display Resolution | 1280 x 720 IPS |
| Operating System | Android 12 |
| CPU | 8-Core Processor |
| RAM | 2GB |
| ROM | 32GB |
| Connectivity Technology | Bluetooth 5.2, USB (4Pin+6Pin), Wi-Fi Hotspot |
| Special Features | Wireless/Wired CarPlay, Android Auto, Mirror Link, 16EQ (Sound Point Control), Premium DSP, RDS, FM/AM, Various Themes, Split Screen Function, Backup Camera (AHD 1080P included), Steering Wheel Control (SWC) |
| Audio Output Mode | Surround |
| Human-Interface Input | Buttons, Touchscreen |
| Compatible Devices | Smartphone |
8. Warranty and Support
Nunoo provides the following support for this product:
- 30-Day Refund Policy: If you are not satisfied with your purchase, you may be eligible for a refund within 30 days.
- 12-Month Replacement Warranty: The product is covered by a 12-month replacement warranty for manufacturing defects.
- Lifetime Technical Support: For any assembly, operation, or technical questions, please contact our professional technical team.
To contact customer service, please use the "Contact Seller" option on your order page. Our technical support team aims to resolve your issues within 24 hours.
