1. Introduction
This manual provides essential information for the safe and efficient use of your LG 55 Inch Class UA77 Series LED AI 4K Smart webOS TV. Please read this manual thoroughly before operating your television and retain it for future reference. This television features a 4K UHD display, AI-powered picture enhancements, the webOS 25 smart platform, and integrated ThinQ AI for voice control.
Figure 1.1: Front view of the LG 55 Inch Class UA77 Series 4K Smart TV. This image displays the television's slim bezel design and vibrant screen, showcasing its modern aesthetic and high-quality display.
2. Safety Information
Always follow these basic safety precautions to reduce the risk of fire, electric shock, or injury:
- Do not expose the TV to rain or moisture.
- Do not open the TV casing; refer all servicing to qualified personnel.
- Ensure proper ventilation around the TV. Do not block ventilation openings.
- Place the TV on a stable, level surface or mount it securely to a wall using a VESA-compliant mount (400 x 400 mm).
- Protect the power cord from being walked on or pinched.
- Unplug the TV during lightning storms or when unused for long periods.
3. What's in the Box
Verify that all components are present before proceeding with setup:
- LG 55 Inch Class UA77 Series LED AI 4K Smart webOS TV
- Remote Control
- Remote Control Batteries
- Power Cable
- Stand (with screws)
- Quick Start Guide
- High-Speed HDMI Cable
Figure 3.1: Diagram illustrating the television's dimensions and a list of included accessories. This image confirms the physical size of the TV and the items you should find in the packaging.
4. Setup
4.1. Stand Installation or Wall Mounting
If using the included stand, carefully attach it to the bottom of the TV using the provided screws. Ensure the stand is securely fastened. If wall mounting, use a VESA-compliant wall mount kit (400 x 400 mm) and follow the instructions provided with the mount.
4.2. Connecting Peripherals
Connect your external devices such as cable boxes, gaming consoles, or sound systems to the appropriate ports on the TV.
Figure 4.1: Rear view of the LG 55 Inch Class UA77 Series TV. This image shows the overall back panel, including the VESA mounting points and general layout of the port area.
Figure 4.2: Detailed view of the back panel ports. This includes LAN, Optical Digital Audio Out, Antenna/Cable In, and multiple HDMI and USB inputs.
Figure 4.3: Detailed view of the side panel ports. This image highlights additional HDMI and USB inputs conveniently located on the side for easy access.
4.3. Power Connection
Connect the power cable to the TV's power input and then to a wall outlet. Press the power button on the remote control or on the TV to turn it on.
5. Operating the TV
5.1. Remote Control
The included remote control allows you to navigate the TV's features. Insert two AAA batteries (included) into the remote control, ensuring correct polarity.
Figure 5.1: The LG TV remote control. This image displays the layout of the remote, including power, volume, channel, navigation, and dedicated streaming service buttons.
5.2. webOS Smart Platform
Your TV runs on the webOS 25 platform, providing quick access to streaming applications like Netflix, YouTube, Prime Video, and Disney+. Use the remote's navigation buttons to browse and select content.
5.3. ThinQ AI and Voice Control
The integrated ThinQ AI allows for hands-free control. Press the voice control button on your remote and speak commands to search for content, adjust settings, or control compatible smart home devices. The TV is compatible with Alexa and Google Assistant.
6. Picture and Sound Settings
6.1. 4K UHD Display and AI Processor
The 4K UHD display (3840 x 2160 resolution) delivers sharp detail and vibrant colors. The advanced AI Processor analyzes scenes in real-time, enhancing contrast, upscaling lower-resolution content to near 4K quality, and refining color accuracy for an immersive viewing experience.
Figure 6.1: Illustration of 4K Super Upscaling. This image demonstrates how the TV transforms standard content into sharper 4K definition, improving detail on larger screens.
6.2. HDR10 and HLG Support
The TV supports HDR10 and HLG formats, providing enhanced brightness, deeper contrast, and a wider range of colors for a more cinematic experience with compatible content.
Figure 6.2: Visual comparison between SDR (Standard Dynamic Range) and HDR10 Pro. This image highlights the dramatic visual enhancement and richer colors delivered by HDR10 Pro.
6.3. TruMotion
The native 60Hz refresh rate combined with TruMotion technology ensures smoother movement in fast-action scenes, sports, and gaming, reducing motion blur.
7. Connectivity
Your LG TV offers various connectivity options:
- Wi-Fi 6: For high-speed wireless internet connection.
- Bluetooth: For connecting wireless headphones, soundbars, or other Bluetooth-enabled devices.
- HDMI Ports: Multiple HDMI inputs (including eARC/ARC support) for connecting gaming consoles, Blu-ray players, and other high-definition devices.
- USB Ports: For connecting USB storage devices to play media files.
- Ethernet (LAN) Port: For a wired internet connection.
- Optical Digital Audio Out: For connecting to external audio systems.
- Antenna/Cable In: For connecting an antenna or cable TV signal.
8. Maintenance
8.1. Cleaning the TV
Always unplug the TV before cleaning. Use a soft, dry cloth to wipe the screen and cabinet. For stubborn marks, lightly dampen the cloth with water or a mild screen cleaner. Do not use abrasive cleaners or solvents.
8.2. Software Updates
Ensure your TV's software is up to date for optimal performance and security. You can usually check for updates through the TV's settings menu under 'General' or 'Support'.
9. Troubleshooting
If you encounter issues, try these common troubleshooting steps:
| Problem | Solution |
|---|---|
| No Power | Check if the power cord is securely connected to the TV and the wall outlet. Try a different outlet. |
| No Picture/Sound | Ensure the correct input source is selected. Check all cable connections (HDMI, antenna). |
| Remote Control Not Working | Replace the batteries. Ensure there are no obstructions between the remote and the TV's sensor. |
| Poor Picture Quality | Adjust picture settings (brightness, contrast, sharpness). Check the signal source quality. |
| Cannot Connect to Wi-Fi | Restart your router and modem. Re-enter the Wi-Fi password. Ensure the TV is within range of your Wi-Fi network. |
10. Specifications
| Feature | Detail |
|---|---|
| Model Name | UA77 Series |
| Screen Size | 55 Inches (55.2" Diagonal) |
| Display Technology | LED |
| Resolution | 4K UHD (3840 x 2160) |
| Refresh Rate | 60Hz (TruMotion) |
| HDR Support | HDR10, HLG |
| Processor | AI Processor |
| Smart TV Platform | webOS 25 |
| Voice Control | ThinQ AI, Alexa, Google Assistant compatible |
| Connectivity | Wi-Fi 6, Bluetooth, 3x HDMI, 1x USB, Ethernet, Optical Digital Audio Out |
| VESA Mount Standard | 400 x 400 mm |
| Dimensions (W x H x D) without stand | 48.3" x 28" x 2.7" |
| Dimensions (W x H x D) with stand | 48.3" x 30" x 10.1" |
| Included Components | Power Cable, Remote Control, Stand, HDMI Cable |
11. Warranty and Support
This product comes with a 12-Month CPS Warranty for added peace of mind. For warranty claims or technical support, please refer to the warranty documentation included with your purchase or visit the official LG support website. You can also contact LG customer service for assistance with product operation or troubleshooting.