1. Introduction
Welcome to the user manual for your YQHS Q3 Smart Projector. This guide provides essential information for setting up, operating, and maintaining your device. Please read this manual thoroughly before using the projector to ensure proper function and longevity.
2. What's in the Box
Carefully unpack the box and ensure all items are present. If any items are missing or damaged, please contact customer support.
- Q3 Smart Projector x1
- PD Protocol Adapter x1
- Remote Control x1 (Batteries not included)
- User Manual x1

Image: The YQHS Q3 Smart Projector, remote control, power adapter, and user manual laid out.
3. Product Overview
Familiarize yourself with the projector's components and ports.
3.1 Front and Side View

Image: Front view of the YQHS Q3 Smart Projector, highlighting its lens and spherical design.
3.2 Rear Ports

Image: Rear view of the YQHS Q3 Smart Projector detailing its connectivity ports: Type-C, 3.5mm Audio Out, HDMI, and USB.
- Type-C Port: For power input (45W+ PD source, 12V output required).
- 3.5mm Audio Output: For connecting external speakers or headphones.
- HDMI Port: For connecting external devices like laptops, TV sticks, or game consoles.
- USB Port: For connecting USB storage devices to play media.
4. Setup Guide
4.1 Powering On/Off
- Connect the provided PD Protocol Adapter to the Type-C port on the projector and then to a power outlet. Ensure the power source is 45W+ PD and supports 12V output.
- Alternatively, connect a compatible 45W+ PD power bank for portable use.
- Press the power button on the projector or the remote control to turn on the device.
- To turn off, press the power button again and confirm shutdown on the screen.
4.2 Initial Setup
Upon first power-on, the projector will guide you through the initial setup process.
- Language Selection: Choose your preferred language.
- Network Connection: Connect to your Wi-Fi network (2.4G or 5G) by selecting your network and entering the password.
- Google Account Login: Log in with your Google account to access the Google Play Store and synchronize your apps and settings.
- System Updates: Check for and install any available system updates to ensure optimal performance.
4.3 Projector Placement (Ultra-Short Throw)
The YQHS Q3 features an ultra-short throw ratio of 0.65:1, allowing for large images in small spaces.
- For a 60-inch image, place the projector approximately 0.8 meters (2.6 feet) from the projection surface.
- For a 100-inch image, place the projector approximately 1.4 meters (4.6 feet) from the projection surface.
- The projector supports a projection size range from 30 inches to 200 inches.

Image: Illustration of the YQHS Q3's ultra-short throw capability, showing projection distances for different screen sizes.
5. Operating Instructions
5.1 Navigation (Remote Control)
Use the provided remote control to navigate the Android 14 interface.
- Directional Pad: Navigate through menus and select items.
- OK Button: Confirm selections.
- Back Button: Return to the previous screen.
- Home Button: Go to the main home screen.
- Volume Buttons: Adjust audio volume.
- Settings Button: Access system settings.
5.2 Built-in Apps (Android 14)
The YQHS Q3 runs on Android 14 with pre-installed streaming applications.
- Access popular apps like Netflix, Prime Video, YouTube, and more directly from the home screen.
- Download additional apps from the Google Play Store.

Image: The YQHS Q3's smart interface displaying a selection of built-in streaming applications.
5.3 Connectivity
The projector offers various connectivity options for seamless integration with your devices.
- Wi-Fi (2.4G/5G): For internet access and online streaming.
- Bluetooth 5.4: Connect to external Bluetooth speakers, headphones, or use the projector as a standalone Bluetooth speaker (two-way audio).
- HDMI: Connect laptops, game consoles, TV sticks, etc. (Supports 4K input for playback via HDMI).
- USB: Play media files directly from USB drives.
- Type-C: Power input.
5.4 Screen Mirroring/Casting
The projector supports screen mirroring from compatible devices.
- Access the screen mirroring function from the projector's interface.
- Follow on-screen instructions to connect your smartphone or tablet.
- Note: Due to HDCP copyright protection, some streaming services (e.g., Netflix, Prime Video) may not allow screen mirroring. Use their built-in apps or connect via HDMI with a compatible device (Chromecast, Roku, TV box) for these services.
5.5 Audio
- Built-in Speakers: The projector features 8W stereo speakers for direct audio output.
- Bluetooth Speaker Mode: Connect your phone to the projector via Bluetooth to use the projector as a standalone Bluetooth speaker.
- External Audio: Connect external speakers, soundbars, or headphones via the 3.5mm audio jack or Bluetooth for enhanced sound.
5.6 Intelligent Screen Adjustment
The YQHS Q3 features advanced automatic adjustment technologies.
- TOF Real-Time Autofocus: The projector automatically adjusts focus for a clear image within 3 seconds.
- Auto Keystone Correction: Automatically corrects vertical and horizontal keystone distortion (up to ±15°) for a perfectly rectangular image, even when projected at an angle.
- Rotation: The projector can rotate up to 120° for flexible projection angles (e.g., ceiling projection).

Image: Visual representation of the projector's intelligent screen adjustment features, including real-time autofocus, keystone correction, and 120-degree rotation.
5.7 Ambient Lighting (Starlight Lamp)
The projector includes a unique starlight ambient lighting design.
- Activate the starlight lamp feature through the projector's settings or dedicated remote button (if available) to create a relaxing atmosphere.
6. Maintenance
6.1 Cleaning
- Lens: Use a soft, lint-free cloth specifically designed for optical lenses. Do not use abrasive cleaners or solvents. Gently wipe the lens to remove dust or smudges.
- Projector Body: Wipe the exterior with a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water and then wipe dry. Avoid using harsh chemicals.
- Ventilation: Ensure the ventilation openings are clear of dust and obstructions to prevent overheating. Use a soft brush or compressed air to gently clean the vents.
6.2 Storage
- When not in use for extended periods, store the projector in a cool, dry place away from direct sunlight and extreme temperatures.
- Use the original packaging or a protective case to prevent dust accumulation and physical damage.
7. Troubleshooting
If you encounter issues, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No picture/No power | Power cable not connected; insufficient power supply. | Ensure the Type-C power cable is securely connected. Verify the power adapter is 45W+ PD with 12V output. |
| Blurry image/Out of focus | Autofocus issue; projector too close/far. | Ensure the projector is on a stable surface. If autofocus fails, try moving the projector slightly or restarting. Check projection distance. |
| Image is trapezoidal | Keystone correction needed. | The projector has auto keystone. Ensure it's on a flat surface. If manual adjustment is needed, check settings. |
| No sound | Volume too low; external audio device not connected properly. | Increase volume. Check if external speakers are connected and powered on. Verify Bluetooth connection. |
| Wi-Fi connection issues | Incorrect password; router issues; signal interference. | Re-enter Wi-Fi password. Restart router. Move projector closer to router. |
| Black screen during screen mirroring | HDCP copyright protection. | Use the projector's built-in apps or connect via HDMI with a compatible device (e.g., TV stick) for protected content. |
8. Specifications
| Model Name | Q3 |
| Brand | YQHS |
| Operating System | Android 14 |
| Native Resolution | 1280 x 720 (Supports 1080P FHD) |
| Display Resolution Maximum | 1920 x 1080 pixels (4K Compatible via HDMI) |
| Brightness | 350 ANSI Lumens |
| Contrast Ratio | 12000:1 |
| Throw Ratio | 0.65:1 (Ultra-Short Throw) |
| Projection Size | 30 - 200 inches |
| Connectivity | Wi-Fi (2.4G/5G), Bluetooth 5.4, HDMI, USB, 3.5mm Audio Out, Type-C (Power) |
| Special Features | TOF Real-time Autofocus, Auto Keystone Correction, HDR10, HLG, Built-in Apps, 8W Stereo Speakers, Starlight Ambient Light, USB-C PD Power |
| Light Source Life | 50,000 hours |
| Power Input | Type-C PD (45W+, 12V output required) |
| Dimensions (L x W x H) | 5.4"L x 5.4"W x 6"H |
| Weight | 1.5 pounds |
9. Warranty and Support
9.1 Warranty Information
The YQHS Q3 Smart Projector comes with a 2-Year Manufacturer Warranty. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or natural disasters. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact YQHS customer support. Refer to the contact information provided on the product packaging or the official YQHS website.
Important Tip: If your product arrives damaged or appears incomplete, please contact support immediately for prompt resolution.