1. Introduction
Thank you for choosing the Blow AVH-9930 2DIN 7-inch GPS Car Radio. This manual provides detailed instructions for the installation, operation, and maintenance of your new car multimedia system. Please read this manual thoroughly before using the product to ensure proper and safe operation. Keep this manual for future reference.
2. Safety Information
- Always operate the device safely and responsibly. Distracted driving can lead to serious injury or death.
- Do not attempt to disassemble or modify the unit. This may cause damage, fire, or electric shock.
- Ensure proper wiring and installation to prevent short circuits and electrical hazards. Consult a professional for installation if you are unsure.
- Keep the unit away from water and excessive moisture.
- Use only specified voltage and power sources.
3. Package Contents
Please check that all items are present in the package:
- Blow AVH-9930 Car Radio Unit
- Power Cable Harness
- GPS Antenna
- Mounting Brackets and Screws
- User Manual (this document)
4. Product Overview
The Blow AVH-9930 is a versatile 2DIN car multimedia system featuring a 7-inch display, integrated GPS navigation, Bluetooth connectivity, and FM radio. Its intuitive interface allows for easy access to various functions including music playback, video, and applications.

Figure 4.1: Blow AVH-9930 Main Interface
This image displays the main user interface of the Blow AVH-9930 car radio. On the left, there are control buttons for microphone, reset, power, home, and back. The screen shows a digital clock (08:00) and an analog clock. Below the analog clock, the Android logo is visible. The central part of the screen features a music player interface with 'Ciesz się muzyką' (Enjoy music) text, playback controls, and a music note icon. Below this, there are large circular icons for Navigation, Radio, Bluetooth Connection, Video, and Applications. The bottom of the unit shows the 'BLOW' brand logo and 'AVH9930' model number.
5. Installation
5.1 Wiring Diagram
Refer to the included wiring diagram for detailed connections. Ensure all connections are secure and insulated to prevent short circuits.
- Red Wire: ACC (Accessory Power)
- Yellow Wire: B+ (Constant Power)
- Black Wire: GND (Ground)
- Blue Wire: ANT (Antenna Remote)
- Speaker Wires: Connect to corresponding vehicle speaker wires (e.g., Front Left +, Front Left -).
- GPS Antenna: Connect to the dedicated GPS antenna port. Position the antenna in a location with clear sky view.
5.2 Mounting the Unit
The AVH-9930 is a 2DIN unit. Use the provided mounting brackets and screws to secure the unit into your vehicle's dashboard opening. Ensure the unit is firmly in place to prevent vibration and movement during driving.
6. Basic Operation
6.1 Power On/Off
Press the Power button (usually marked with a circle and vertical line) on the left side of the unit to turn it on or off. The unit will also power on/off with your vehicle's ignition.
6.2 Volume Control
Use the volume up (+) and volume down (-) buttons, typically located on the left side or via on-screen controls, to adjust the audio output level.
6.3 Main Menu Navigation
From the main screen, tap on the desired icon to access functions such as Navigation, Radio, Bluetooth, Video, or Applications. Use the Home button (house icon) to return to the main menu at any time.
7. Advanced Features
7.1 GPS Navigation
Tap the Navigation icon to launch the GPS application. Ensure the GPS antenna is properly installed and has a clear view of the sky for optimal signal reception. Follow on-screen prompts to set destinations and view maps.
7.2 Bluetooth Connectivity
To connect your mobile device via Bluetooth:
- Tap the Bluetooth Connection icon.
- Enable Bluetooth on your mobile device and search for available devices.
- Select "AVH-9930" from the list of devices.
- Confirm the pairing code if prompted.
Once connected, you can make hands-free calls and stream audio from your device.
7.3 FM Radio
Tap the Radio icon to access the FM tuner. You can manually tune to stations or use the auto-scan function to find and save available stations.
7.4 Video Playback
Tap the Video icon to play video files. The unit supports various video formats. Ensure video files are stored on a compatible USB drive or SD card.
7.5 Applications
The Applications icon provides access to pre-installed apps and allows for installation of additional compatible applications, expanding the functionality of your car radio.
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the display and unit exterior. Do not use abrasive cleaners or solvents.
- Software Updates: Periodically check the manufacturer's website for software updates to ensure optimal performance and access to new features.
- Reset: If the unit becomes unresponsive, locate the RST (Reset) button (often a small pinhole) and press it gently with a non-metallic pointed object.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Incorrect wiring; Blown fuse; No power from vehicle. | Check power and ground connections. Inspect vehicle fuses. Ensure ACC and B+ wires have power. |
| No sound. | Volume too low; Mute activated; Speaker wires disconnected. | Increase volume. Check if mute is on. Verify speaker wire connections. |
| GPS signal lost or inaccurate. | GPS antenna not properly connected or positioned. | Ensure GPS antenna is securely connected and placed in an open area with clear sky view. |
| Bluetooth connection issues. | Device not in pairing mode; Interference; Incorrect pairing process. | Ensure both devices are in pairing mode. Try restarting both devices. Delete previous pairings and re-pair. |
10. Specifications
- Model Number: AVH-9930 (Manufacturer Part Number: 78-320#)
- Display Size: 7-inch
- Form Factor: 2DIN
- Connectivity: Bluetooth, GPS
- Special Features: FM Tuner
- Compatible Devices: Speaker
- Color: Black
- Product Dimensions: 50 x 50 x 28 cm
- Item Weight: 859 g
11. Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official Blow website. Keep your purchase receipt as proof of purchase for warranty claims.
For further assistance, you may contact customer service through the details provided on the Blow official website.





