BenQ HT4550i 4K HDR LED Smart Home Theater Projector Instruction Manual

Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your BenQ HT4550i 4K HDR LED Smart Home Theater Projector. Please read this manual thoroughly before using the projector to ensure proper functionality and to maximize your viewing experience. The BenQ HT4550i delivers a true 4K UHD resolution with HDR-PRO technology, offering vibrant colors and detailed contrast for cinematic viewing.

Image: BenQ HT4550i 4K HDR LED Smart Home Theater Projector, front-side view.

What's in the Box

Verify that all items listed below are included in your package:

• Power Cord
• Projector Lens Cover
• User Manual (this document)
• Warranty Card
• Remote Control with Batteries
• Android TV Dongle (QS02)

Image: Included Remote Control (RCI074) and Android TV Dongle (QS02).

Key Features

• True 4K UHD Resolution: Displays 8.3 million distinct pixels for a 3840 x 2160 image, providing clarity and detail.
• HDR-PRO Technology: Features exclusive Local Contrast Enhancer and Tone Mapping for optimized detail in both dark and bright scenes, supporting HDR10+, HDR10, and HLG formats.
• CinematicColor Technology: Achieves 100% DCI-P3 color coverage with factory-calibrated accuracy for vibrant and true-to-life colors.
• LED Light Source: Offers a long lifespan of over 10 years, ensuring consistent color volume and high contrast.
• Installation Flexibility: Equipped with 2D lens shift and 1.3x zoom for versatile placement in various room sizes and configurations.
• Certified Android TV: Provides access to streaming services, including Netflix, in up to 4K HDR, with built-in Chromecast.
• Integrated Speaker: Features a 5W built-in speaker for audio output.

Image: The projector's ability to display colors as intended by directors, highlighting 4K UHD, CinematicColor, Filmmaker Mode, and 24P support.

Setup

1. Physical Placement

Position the projector on a stable surface or mount it to the ceiling. Ensure adequate ventilation around the unit. The HT4550i offers flexibility in placement due to its lens shift and zoom capabilities.

• Projection Distance: The projector supports various screen sizes based on distance. For a 100-inch screen, the distance is approximately 8.3ft to 10.8ft (2.5m to 3.3m). For a 120-inch screen, it's 10ft to 13ft (3m to 4m). For a 150-inch screen, it's 12.5ft to 16.3ft (3.8m to 5m).
• Lens Shift: Use the lens shift function to adjust the image position vertically (0-60%) and horizontally (±15%) without moving the projector, maintaining image quality.
• Zoom: The 1.3x zoom allows for adjusting the image size to fit your screen without relocating the projector.

Image: Illustration of Vertical/Horizontal Lens Shift, showing how the image can be moved without distortion.

Image: Projection Distance guide for various screen sizes (100", 120", 150") and corresponding throw distances.

2. Connectivity

Connect your source devices to the projector using the appropriate ports. The HT4550i offers a range of connectivity options.

• HDMI: Two HDMI 2.0b/HDCP2.2 ports are available for connecting Blu-ray players, gaming consoles, streaming devices, and other HDMI-enabled equipment.
• USB-A (2.5A): For media playback or powering external devices.
• Media Reader: For direct media playback from storage devices.
• SPDIF / Audio Out: For connecting to external audio systems.
• LAN: For network connectivity.
• RS-232: For control system integration.

Image: Rear view of the projector detailing connectivity ports including SPDIF, Audio Out, Media Reader, HDMI 1 & 2, USB-A, RS-232, and LAN.

3. Power On/Off

1. Connect the power cord to the projector and a power outlet.
2. Press the power button on the projector or the remote control to turn on the unit.
3. To turn off, press the power button again. The projector will enter a cooling down phase before fully shutting down.

Operating Instructions

1. Remote Control

Use the provided remote control to navigate menus, adjust settings, and control playback. Ensure batteries are correctly inserted.

2. Android TV Dongle

The included Android TV dongle provides access to a wide range of streaming applications and features. Insert the dongle into the designated port (usually an internal HDMI port or a specific USB port for the dongle) and follow the on-screen instructions for initial setup, including connecting to Wi-Fi and logging into your Google account.

Image: Google-licensed Android TV interface, featuring popular streaming apps and Chromecast built-in.

3. Image Adjustment

• Focus: Rotate the focus ring on the lens until the image appears sharp and clear.
• Zoom: Adjust the zoom ring on the lens to resize the image to fit your screen.
• Keystone Correction: If the image appears trapezoidal, use the keystone correction function in the projector's menu to square the image. Note that excessive keystone correction can slightly reduce image quality.

4. Color and Picture Settings

The HT4550i offers advanced picture settings for optimal viewing.

• HDR-PRO: This technology enhances contrast and detail in HDR content. It includes Local Contrast Enhancer, which divides the image into over 1,000 zones for superior dark and bright detail, and Dynamic Black technology for optimized tone mapping.
• CinematicColor: Ensures accurate color reproduction, covering 100% of the DCI-P3 color space.
• Color Temperature Tuning: Features 11 precise white balance levels to adjust mid-tone colors for accurate representation.

Image: The projector's HDR-PRO technology enhancing cinematic details in a landscape scene.

Image: Local Contrast Enhancement, illustrating how the image is divided into zones for improved detail in both bright and dark areas.

Image: Dynamic Black technology comparison, showing enhanced contrast in a night scene.

Maintenance

• Lens Cleaning: Use a soft, lint-free cloth specifically designed for optical lenses to gently wipe the projector lens. Avoid abrasive materials or harsh chemicals.
• Dust Filter: Regularly check and clean the dust filter to ensure proper airflow and prevent overheating. Refer to the full user manual for specific instructions on filter access and cleaning.
• General Cleaning: Wipe the projector's exterior with a soft, dry cloth. Do not use liquid cleaners directly on the unit.
• Storage: When not in use for extended periods, cover the projector with a dust cover and store it in a cool, dry place.

Troubleshooting

If you encounter issues with your projector, refer to the following common problems and solutions:

• No Image:
  • Ensure the projector is powered on and the power cord is securely connected.
  • Verify the input source is correctly selected and the source device is turned on.
  • Check HDMI or other video cables for secure connections.
• No Sound:
  • Check the projector's volume settings and ensure it is not muted.
  • Verify that external audio systems are properly connected and powered on if used.
  • Ensure the audio output settings on your source device are correct.
• Image is Blurry:
  • Adjust the focus ring on the projector lens.
  • Ensure the projection distance is within the recommended range.
  • Clean the projector lens if it appears dirty.
• Image is Distorted (Trapezoidal):
  • Use the keystone correction function in the projector's menu to adjust the image shape.
  • Ensure the projector is placed perpendicular to the screen as much as possible.
• Remote Control Not Working:
  • Check and replace the batteries.
  • Ensure there are no obstructions between the remote and the projector's IR receiver.

For more complex issues, consult the comprehensive user manual or contact BenQ customer support.

Specifications

Warranty and Support

The BenQ HT4550i projector comes with a 3-year limited warranty covering parts and labor. For technical support, warranty claims, or additional information, please visit the official BenQ support website or contact their customer service team.

Official BenQ Website: www.benq.com