1. Introduction
Thank you for purchasing the Giaomar C9 Mini Projector. This device is designed to provide a high-quality visual experience for home entertainment, gaming, education, and presentations. It features native 1080p resolution, 5G WiFi connectivity, Bluetooth 5.1, and supports 4K input, delivering clear and vibrant images up to 300 inches.
Please read this manual thoroughly before operating the projector to ensure proper use and to maximize its performance and lifespan. Keep this manual for future reference.

The Giaomar C9 Mini Projector is versatile for multiple applications, including outdoor parties, home theater, gaming, and watching sports.
2. Product Overview
The Giaomar C9 projector offers superior image quality with its native 1080p resolution and 9500 lumens brightness. It supports 4K content and boasts a 10000:1 contrast ratio for sharp, detailed visuals. The advanced optical engine and cooling system ensure stable performance and a quiet operation.

Visual comparison highlighting the superior brightness, resolution, and contrast of the Giaomar C9 projector.
3. Setup
3.1 Package Contents
- Giaomar C9 Mini Projector
- Remote Control
- Power Cable
- HDMI Cable (may vary by package)
- AV Cable (may vary by package)
- User Manual
3.2 Placement
Position the projector on a stable, flat surface. Ensure there is adequate ventilation around the unit. The optimal projection distance ranges from 1.5 to 6 meters, allowing for a screen size between 50 and 300 inches.
3.3 Power Connection
- Connect the power cable to the projector's power input port.
- Plug the other end of the power cable into a standard electrical outlet (240V AC).
- Press the power button on the projector or the remote control to turn on the device.
4. Operating Instructions
4.1 Focusing the Image
Rotate the focus ring on the projector lens until the projected image appears clear and sharp on the screen.
4.2 Keystone Correction
If the image appears trapezoidal, use the keystone correction feature (manual or digital, depending on model) to adjust the image shape to a perfect rectangle. Refer to the on-screen menu for digital keystone adjustments.
4.3 Zoom Function
The projector features a zoom function that allows you to reduce the image size by up to 50% without moving the projector. Access this feature through the projector's on-screen menu using the remote control.

Illustration of the projector's ability to create a large screen from 50 to 300 inches, and the zoom function to adjust image size.
5. Connectivity
5.1 WiFi Connection & Wireless Screen Mirroring
The Giaomar C9 supports dual-band 2.4G and 5G WiFi for fast and stable wireless screen mirroring from your iOS or Android devices, as well as Windows computers.
- Navigate to the 'WiFi' or 'Screen Mirroring' option in the projector's main menu.
- Select your WiFi network and enter the password.
- On your mobile device or computer, enable screen mirroring/casting and select the projector from the available devices.

The projector supports both 2.4G and 5G WiFi for seamless wireless screen mirroring from various devices.
5.2 Bluetooth 5.1 Connection
Connect external Bluetooth speakers or headphones for an enhanced audio experience. The bidirectional Bluetooth 5.1 also allows connection to your phone.
- Go to the 'Bluetooth' settings in the projector's menu.
- Enable Bluetooth and search for nearby devices.
- Select your Bluetooth speaker or headphones from the list to pair.

Connect Bluetooth 5.1 compatible audio devices for immersive sound.
5.3 Wired Connections
The projector offers multiple wired input options:
- HDMI (x2): Connect TV boxes, gaming consoles (Xbox, PS4), laptops, or other HDMI-enabled devices.
- USB (x2): Play media directly from USB flash drives.
- VGA: Connect older computers or monitors.
- AV: Connect legacy video devices.
To use a wired connection, simply plug the cable into the corresponding port on the projector and select the correct input source from the projector's menu.

The projector is compatible with a wide range of devices via its multiple input ports.
6. Maintenance
6.1 Cleaning the Lens
Use a soft, lint-free cloth or a lens cleaning kit to gently wipe the projector lens. Avoid using abrasive materials or harsh chemicals that could scratch the lens.
6.2 Dust Prevention
The projector features a fully sealed optical engine designed to prevent dust from entering and affecting image quality. However, regularly clean the exterior of the projector with a soft cloth to prevent dust buildup on vents.
6.3 Lamp Life
The advanced German LED chips provide a lamp life of up to 100,000 hours, ensuring long-term use without frequent lamp replacement.
7. Troubleshooting
7.1 No Image or Poor Image Quality
- Ensure the power cable is securely connected and the projector is turned on.
- Check that the correct input source is selected (e.g., HDMI1, USB, WiFi).
- Adjust the focus ring to sharpen the image.
- Perform keystone correction if the image is distorted.
- Verify that the source device (laptop, phone) is outputting a signal.
7.2 No Sound
- Increase the volume on both the projector and the source device.
- Check if external speakers are connected via Bluetooth or audio cable; ensure they are powered on and paired correctly.
- Ensure the audio output settings on your source device are configured correctly.
7.3 Remote Control Not Working
- Replace the batteries in the remote control.
- Ensure there are no obstructions between the remote control and the projector's IR receiver.
7.4 Overheating
- Ensure the projector's ventilation ports are not blocked.
- Operate the projector in a well-ventilated area.
- Turn off the projector and allow it to cool down if an overheating warning appears.
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | C9 |
| Native Resolution | 1920 x 1080p |
| Max Display Resolution | 1980 x 1080 Pixels (4K Support) |
| Brightness | 9500 Lumens |
| Contrast Ratio | 10000:1 |
| Display Type | LCD |
| Connectivity Technology | Wi-Fi (2.4G/5G), Bluetooth 5.1 |
| Hardware Connectivity | 2x HDMI, 2x USB, VGA, AV |
| Max Image Size | 300 Inches |
| Min Image Size | 50 Inches |
| Projection Distance | 1.5 - 6 Meters |
| Light Source Life | 100,000 Hours |
| Power Consumption | 75 Watts |
| Voltage | 240 Volts (AC) |
| Form Factor | Portable |
| Included Components | Remote Control |
9. Warranty and Support
The Giaomar C9 Mini Projector comes with a 6-month return policy and a 3-year repair warranty. We also provide professional technical support for the lifetime of the product.
For any questions or assistance, please contact our support team. We are available 24/7 to resolve your inquiries.
Please refer to your purchase documentation for specific contact details.
