Srnubi G20 Car Radio Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your Srnubi G20 Car Radio multimedia player. Designed specifically for Suzuki Grand Vitara models from 2005 to 2015, this head unit offers advanced features including wireless CarPlay and Android Auto, GPS navigation, Bluetooth 5.0, split-screen functionality, and support for 2K ADAS DVR.

Please read this manual thoroughly before installation and use to ensure proper function and to maximize your driving experience.

2. Package Contents

Upon opening the package, please verify that all the following items are included:

• Main Head Unit (Machine)
• Installation Frame
• Power Cable
• RCA Cable
• USB Cable * 2
• GPS Antenna
• 4G RCA Cable (Only for 4G Function)
• Installation Tool (Gift)
• Camera Input Cable
• User Manual (this document)

3. Installation

3.1. Pre-Installation Check

Ensure your vehicle is a Suzuki Grand Vitara model manufactured between 2005 and 2015. The head unit is designed for a direct fit. Compare your car's dashboard with the images below:

3.2. Wiring Connections

Refer to the following diagrams for proper wiring of the head unit. Incorrect wiring can damage the device or your vehicle's electrical system.

Rear Port Overview:

• Camera Input: Connect your rearview camera here.
• USB (6Pin) & USB (4Pin): For connecting USB devices.
• Power Cable: Main power connection to the vehicle.
• Fan Power-on: Connection for the cooling fan.
• FM Radio: Connect the FM antenna.
• GPS: Connect the GPS antenna.
• 4G Antennas: Connect the 4G antenna for models with 4G functionality.
• RCA Cable: For audio/video input/output connections.

RCA Cable Connections:

1. MIC (Microphone)
2. SUB WOOFER
3. CVBS IN 1 (Composite Video Blanking and Sync Input 1)
4. VIDEO OUT
5. AUDIO OUT R (Right Audio Output)
6. AUX IN R (Right Auxiliary Input)
7. AUDIO OUT L (Left Audio Output)
8. AUX IN L (Left Auxiliary Input)
9. Fan
10. SIM Cable (Only for T10/G20 models)

General Wiring Guidelines:

• Power (Red & Yellow): Connect to the positive side of the car's 12V power supply. The red wire (ACC) should connect to an ignition-switched 12V source, and the yellow wire (12V) to a constant 12V source.
• Ground (Black): Connect to the negative terminal of the car battery or a reliable chassis ground point.
• Speaker Wires (Purple, White, Green, Gray): Connect to corresponding car speakers (RR+, RR-, FL+, FL-, FR+, FR-, RL+, RL-).
• Automatic Antenna Power Supply (Blue): Connect to the power input of your car's automatic antenna.
• KEY1, KEY2 (Brown, Pink): For steering wheel control connections.
• Reverse Detection (Orange): Connect to the reverse light signal wire.
• ILL (Car Headlights) (Red): Connect to the car's headlight signal for illumination dimming.
• ACC +12V (Yellow): Connect to an accessory power source.
• B+ 12V (Black): Connect to constant battery power.
• GND (Green): Ground connection.

3.3. Cooling Fan Installation

The G20 series includes a powerful cooling fan to prevent overheating during long-term use or high-speed operation. Ensure it is properly connected to the 'Fan power-on' port on the rear of the unit.

4. Operating Instructions

4.1. Initial Power On

After successful installation, turn on your vehicle's ignition. The head unit should power on automatically. If it does not, refer to the Troubleshooting section.

4.2. Interface Overview

The Srnubi G20 features a simple and intuitive desktop interface for comfortable operation.

Key interface elements typically include Home, Speed display, Custom Color settings, Backstage (recent apps), Return, Navigation, Time, Refresh, and Save functions, along with customizable app shortcuts.

4.3. CarPlay & Android Auto

Enjoy seamless wireless connectivity with your smartphone for hands-free control of calls, music, and navigation through Apple CarPlay and Android Auto.

To connect, enable Bluetooth and Wi-Fi on your smartphone and follow the on-screen prompts on the head unit to pair. Once connected, you can use voice commands (Hey Siri, Hey Assistant) for various functions.

4.4. GPS Navigation

The unit supports popular navigation apps like Google Maps, Herewego, IGO, Sygic, and Yandex. For online maps, ensure the player is connected to the internet via Wi-Fi or 4G LTE. You can also download maps for offline use.

4.5. Bluetooth 5.0

The integrated Bluetooth 5.0 module provides stable and long-distance connectivity for hands-free calls, syncing contacts, and streaming Bluetooth music.

4.6. Split Screen Functionality

Multitask effortlessly by running two applications simultaneously on a single screen, enhancing efficiency and productivity.

4.7. Steering Wheel Control

Change tracks, adjust volume, and access other functions directly from your original steering wheel controls for convenience and safety.

4.8. Day Mode & Night Mode

The G20 features a custom UI 5.0 with automatic day and night modes. The overall screen brightness adjusts to match the surrounding environment, ensuring optimal visibility day or night.

4.9. Adjustable Button Color

Personalize your head unit with 7 options for button light color.

4.10. 4G/5G WiFi Network

Connect to 4G or 5G WiFi networks to watch live content, listen to music online, play games, watch movies, and keep your car seamlessly connected to the internet.

4.11. ADAS DVR Camera (Optional)

For enhanced driving safety, the unit supports an optional 2K HD ADAS DVR camera with features like Lane Departure Warning Assist (LDWS) and Forward Collision Warning Distance Monitoring (FCWS).

5. Maintenance

5.1. General Care

• Keep the screen clean using a soft, lint-free cloth. Avoid abrasive cleaners.
• Do not expose the unit to extreme temperatures or direct sunlight for prolonged periods.
• Ensure all cables are securely connected to prevent intermittent issues.

5.2. Cooling Fan Management

The cooling fan helps maintain optimal operating temperature. The fan can be set to turn on automatically when the CPU temperature exceeds 70°C and turn off when it drops below 70°C. You can also manually control the fan switch via the dedicated app.

Important: When the machine runs at high speed, the ambient temperature inside the casing will rise. The PCB board is designed to withstand up to +85°C. Exceeding this temperature can cause damage. Ensure the cooling fan is operational, especially in hot environments.

6. Troubleshooting

This section addresses common issues you might encounter. For problems not listed here, please contact customer support.

Q: Why can't the car radio turn on?

• Check the voltage: The car radio requires 12V.
• Verify power connections: Ensure the red (ACC) and yellow (12V) wires are connected to the positive side of the 12V power supply, and the black wire (GND) to the negative.
• Check the fuse: Replace with the same type of fuse if blown.
• Use provided power cables: Do not directly insert the original car plug into our machine.
• If the radio still doesn't turn on, ensure ACC (G3) and 12V (G2) are connected to the positive 12V, and G1 to negative. If the power cord doesn't match, you may need to connect these 3 power cords directly to the car's power without the radio.
• Check internal connections: A connecting wire might have come loose during transportation. Open the back cover to check and reconnect.
• If all else fails, record a video showing power cord connection and 12V test with a multimeter, then contact support.

Q: Why does the car radio show "No Signal" when reversing?

• Ensure the camera's line is properly connected to the "CAMIN" port of the car radio.

Q: Why does the camera display "!" and "Can't watch video while driving" when using USB to watch videos?

• Turn off the "Video Warning" function in the settings.

Q: Why can't I search FM radio stations?

• Ensure the radio antenna is inserted and well-contacted. Try re-inserting it several times.
• Check your location's signal strength. Move to an area with better reception.
• Verify if the car's radio antenna is functional. Replace if broken or ineffective.

Q: Why can't I connect to the car radio's Bluetooth?

• On your phone, open Bluetooth settings, search for the player's Bluetooth model, and pair. Use pairing code 0000, 1234, or 123456 if prompted.
• Try pairing with another mobile phone.
• Ensure the Bluetooth receiving antenna is properly connected.
• If issues persist, unplug the power plug from the back of the player, wait 3 minutes, and plug it back in.

Q: Bluetooth or WiFi signal is weak.

• Check and reconnect the Yellow rear Camera input connector. There are two short cables which are extensions for the Bluetooth and WiFi antennas. Extend them to enhance the signal.

Q: The navigation map does not work.

• Check if GPS has a signal by clicking GPS signal detection. If there is a signal, reinstall the map or use a mobile WiFi hotspot.
• If there is no GPS signal, test the GPS interface voltage (should be 3.3V). Replace the GPS antenna if necessary.

Q: The screen display is abnormal.

• Click the one-key recovery button.
• If not resolved, remove the back cover, check if the screen cable is loose, and reconnect it.

Q: Abnormal sound.

• Check if the original car cable has been modified. If so, inspect and reconnect the speaker cables.

Q: Radio setting interface password.

• For K3/T10/T3L/T3L plus models, try: 123456, 8888, 7890, 000000.
• For the programmer interface, the password is 7890 followed by the current hour (e.g., 789011 for 11 o'clock).

7. Specifications

The Srnubi G20 Car Radio offers robust performance and a wide range of features. Specific configurations may vary by model variant (e.g., G20-C, G20-D, G20-E, G20-F).

8. User Tips

• Stable Power: Always ensure a stable 12V power supply to prevent unexpected shutdowns or malfunctions.
• Antenna Placement: For optimal GPS, FM, and 4G/WiFi performance, ensure antennas are placed in clear, unobstructed locations. Consider extending the Bluetooth/WiFi antenna cables if signals are weak.
• Software Updates: Periodically check for system updates to ensure the best performance and access to new features.
• Offline Maps: Download offline maps for your region to ensure navigation functionality even without an internet connection.
• Cooling Fan: Keep the cooling fan active, especially during prolonged use or in hot climates, to prevent overheating and extend the unit's lifespan.

9. Warranty & Support

9.1. Warranty Information

This product comes with a 365-day warranty from the date of purchase. The warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by improper installation, misuse, accidents, or unauthorized modifications.

9.2. Customer Support

For technical assistance, warranty claims, or any other inquiries, please contact Srnubi customer support through your purchase platform. When contacting support, please provide your product model (G20) and a detailed description of the issue.