LG Electronics UF6400 4K Ultra HD Smart TV Manual

The LG Electronics UF6400 is a 4K Ultra HD Smart TV featuring 3840 x 2160 resolution, webOS Smart TV platform, built-in Wi-Fi, Magic Remote compatibility, Triple XD Engine, HEVC decoding, HDMI inputs, USB ports, and advanced picture technologies. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Smart Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 4K Ultra HD display with webOS Smart TV platform, Magic Remote, HDMI inputs, USB ports, built-in Wi-Fi, and Triple XD Engine.

Feature	Description
4K Ultra HD Resolution	3840 x 2160 pixels for exceptional clarity
webOS Smart TV	Intuitive smart platform with app store
Magic Remote	Point, click, scroll, and voice control
Triple XD Engine	Advanced picture processing technology
HEVC Decoding	Supports 4K streaming content
HDMI Inputs	Multiple HDMI ports for external devices
USB Ports	For media playback and recording
Built-in Wi-Fi	Wireless connectivity for smart features
Smart Share	Content sharing from compatible devices
Energy Saving	Multiple power saving modes

Installation

Unpack and inspect contents. Place on stable surface or mount on wall.

Connect antenna or cable/satellite: Use RF input for broadcast signals.
Connect external devices: Use HDMI ports for gaming consoles, Blu-ray players, etc.
Connect to network: Use Ethernet or built-in Wi-Fi for smart features.
Plug into AC power using provided power cord.

WARNING! TV is heavy; use two people for installation. Ensure wall mount is properly secured.

First-Time Setup

Power on TV; follow on-screen setup wizard.

Select language: Choose preferred interface language.
Connect to network: Select Wi-Fi network or connect Ethernet cable.
Channel setup: Auto-program channels for broadcast TV.
LG account: Create or sign in to LG account for smart features.
Picture settings: Configure initial picture mode and preferences.

CAUTION! Ensure proper ventilation around TV. Do not block ventilation openings.

Specifications

Display: 4K Ultra HD LED (3840 x 2160)
Smart Platform: webOS with LG Content Store
Processor: Triple XD Engine
Connectivity: Built-in Wi-Fi, Ethernet, HDMI, USB, Component, Composite
Audio: Clear Voice III, Virtual Surround Plus
HDR: Active HDR with Dolby Vision support
Gaming Features: Game Mode for reduced input lag
Power Consumption: Energy Star compliant
Operating System: webOS Smart TV platform

Controls and Settings

Access settings via Home button on Magic Remote or physical buttons on TV.

Magic Remote: Power, Home, Navigation wheel, Voice recognition, Quick access buttons.

Picture Settings: Picture Mode, Backlight, Contrast, Brightness, Color, Tint, Sharpness. Audio Settings: Sound Mode, Balance, Clear Voice, Auto Volume. Network Settings: Wi-Fi, Ethernet, Network Test. General Settings: Language, Time, Safety, Reset.

Connecting Devices

HDMI: For high-definition devices. USB: For media playback. Component/Composite: For legacy devices.

Turn off TV before connecting devices.
Connect HDMI cable from device to HDMI port on TV.
Select corresponding input source using Input button.
For USB devices, insert directly into USB port.

Tip: Use HDMI ARC for simplified audio system connection.

Smart Features

Access streaming services, apps, and web browsing through webOS platform.

Press Home button to access launcher.
Navigate through apps using Magic Remote.
Install new apps from LG Content Store.
Use voice control for search and commands.
Screen share from compatible mobile devices.
Use Live Plus for enhanced broadcast viewing.

WARNING! Keep software updated for optimal performance and security.

Accessibility Features

Closed Captions: Multiple caption options available. Audio Description: For visually impaired. Voice Guidance: Audio feedback for menu navigation. High Contrast: Enhanced visibility mode.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for screen. For stubborn stains, lightly dampen cloth with water.

CAUTION! Do not use chemicals, alcohol, or abrasive cleaners. Avoid pressure on screen surface.

Regulatory Information

FCC compliant. Energy Star certified. Manufactured under license from Dolby Laboratories. For support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; try different outlet; ensure power button is on.
No picture	Input source/cables	Verify correct input selected; check cable connections; restart TV.
Wi-Fi not connecting	Network settings	Check router; re-enter password; move closer to router; reset network settings.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear line of sight to TV; pair Magic Remote if needed.
Sound issues	Audio settings/connections	Check volume; verify audio output settings; inspect speaker connections.

Reset: Settings > General > Reset to Initial Settings if available.

Service: 1-800-243-0000; www.lg.com