Introduction
This manual provides comprehensive instructions for the LG 65UM6900 65" 4K UHD Smart TV. This television features a 65-inch IPS 4K display, offering a resolution of 3,840 x 2,160 pixels with wide viewing angles and nearly 100% color accuracy. It is equipped with a Quad-core processor that enhances picture and sound quality by reducing video noise and motion blur. The TV supports 4K Active HDR (HDR10, HLG) with advanced tone mapping technology for optimized scene-by-scene image adjustment. The webOS platform provides easy access to streaming content and smart features. Connectivity includes Wi-Fi and multiple HDMI ports.
Setup
1. Physical Setup (Attaching the Stand)
Carefully place the TV screen-down on a soft, flat surface to prevent damage. Attach the two stand legs to the designated slots on the bottom of the TV. Secure them using the provided screws. Ensure the stand is firmly attached before placing the TV upright.
Video: Demonstration of attaching TV stand legs. The video shows how to correctly align and secure the stand components to the television unit.
Alternatively, the TV can be mounted on a wall using a compatible VESA wall mount (sold separately). Refer to the wall mount manufacturer's instructions for proper installation.

Image: Front view of the LG 65UM6900 65" 4K UHD Smart TV, showcasing its slim design and display quality.
2. Initial Power On and Network Connection
Connect the power cord to the TV and then to a power outlet. Press the power button on the remote control or on the TV itself. Follow the on-screen prompts to complete the initial setup, including language selection, time zone, and connecting to your home Wi-Fi network. A stable internet connection is required to access smart features and streaming services.
Operating Instructions
1. Remote Control Functions
The LG Magic Remote allows for intuitive navigation. Use the scroll wheel for quick browsing and the pointer function to select items on screen. Dedicated buttons provide direct access to popular streaming services like Netflix, Prime Video, Disney+, and LG Channels. The remote also includes voice control capabilities for enhanced interaction.

Image: Close-up of the LG Magic Remote, highlighting its ergonomic design and dedicated app buttons.
2. webOS Smart Features
The webOS platform provides a user-friendly interface for accessing a wide range of content. The Home Dashboard allows you to manage connected devices, view frequently used apps, and access various settings. Explore the App List for pre-installed and downloadable streaming applications. The TV supports popular internet services such as Browser, Hulu, and Netflix.
3. Picture and Sound Settings
- Picture Quality: The IPS 4K display ensures consistent color accuracy and wide viewing angles. The Quad-core processor enhances image clarity and reduces motion blur. 4K Active HDR (HDR10, HLG) dynamically adjusts picture settings scene-by-scene for optimal contrast and color.
- TruMotion 120: This technology provides a native 60Hz refresh rate, effectively simulating a 120Hz effect for smoother motion in fast-paced scenes.
- Sound: The integrated speakers deliver clear audio. For enhanced sound, external audio systems can be connected via optical output or other available ports.
4. Gaming Features
The LG 65UM6900 is designed to enhance your gaming experience. It features HDMI 2.1 ports, supporting advanced gaming functionalities. Auto Low Latency Mode (ALLM) automatically optimizes settings for a responsive gaming experience. The Game Optimizer Dashboard provides quick access to game-related settings. Cloud gaming services like GeForce Now and Xbox Game Pass can be accessed directly through the TV, allowing you to stream games without a console.
Maintenance
- Cleaning: Gently wipe the screen with a soft, dry microfiber cloth. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals.
- Software Updates: Ensure your TV's software is up-to-date for optimal performance and security. Updates can usually be found in the TV's settings menu under "General" or "Support."
- Ventilation: Ensure adequate airflow around the TV to prevent overheating. Do not block ventilation openings.
Troubleshooting
- No Power: Check if the power cord is securely connected to both the TV and the power outlet. Try a different outlet.
- No Picture/Sound: Verify that the correct input source is selected. Check all cable connections (HDMI, optical, etc.).
- Poor Picture Quality: Adjust picture settings (brightness, contrast, sharpness). Ensure the content source is high-quality.
- Remote Not Working: Replace batteries. Ensure there are no obstructions between the remote and the TV.
- Smart Features Not Working: Check your Wi-Fi connection. Restart the TV and your router.
- Factory Reset: If issues persist, a factory reset can resolve many software-related problems. This will erase all personalized settings. Consult the on-screen menu for this option.
Specifications
| Brand | LG |
| Model Number | 65UM6900 |
| Screen Size | 65 Inches |
| Screen Type | IPS 4K |
| Resolution | 4K Ultra HD (3,840 x 2,160) |
| Refresh Rate | TruMotion 120 (Native 60Hz) |
| Processor | Quad Core Processor |
| HDR Support | 4K Active HDR (HDR10, HLG) |
| Connectivity | Wi-Fi, HDMI 2.1 (quantity not specified in provided data, assuming multiple based on features), Composite Input (AV) |
| Operating System | webOS |
| Dimensions (with stand) | 57.8 x 10 x 35.9 inches |
| Item Weight | 22 pounds |
| Included Components | Stand, TV |
Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or visit the official LG website. You can also find general customer support information via the provided Customer Support link.