Brand:
LG
Category: Monitor
Document Type: Manual
Language: EN
Manual for 27UD68
Uploaded: Nov. 21, 2025, 8:42 p.m.
Warranty Information
This manual is for the LG 27UD68 monitor and contains setup, operation, and troubleshooting information.
Assembling and Preparing
- Unpack components and verify all parts are present.
- Assemble the stand by attaching the stand base to the stand body and securing it with screws.
- Connect the monitor to a power source and a PC via HDMI or DisplayPort.
- Use the joystick button to navigate the On-Screen Display (OSD) menu for settings adjustments.
Using the Monitor
- Connect to a PC using HDMI or DisplayPort for video and audio signals.
- Connect to AV devices using HDMI for digital video and audio.
- Connect headphones to the H/P port for audio output.
User Settings
- Access the main menu using the joystick button.
- Adjust settings such as Brightness, Contrast, Volume, Input, Picture Mode, Game Adjust, Color Adjust, and General settings.
- Options include Quick Settings, PBP (Picture-by-Picture), and Resetting to default settings.
Troubleshooting
- Refer to the troubleshooting section for issues like no display, OSD lock, image sticking, unstable display, abnormal color, or no sound.
Specifications
- View detailed specifications including LCD screen type, resolution, video signal, input connectors, power consumption, environmental conditions, and dimensions.
Troubleshooting and error codes
| Issue | Possible Cause | Solution |
|---|---|---|
| Nothing is displayed on the screen. | Monitor's power cord not plugged in. | Check if the power cord is correctly plugged into the power outlet. |
| Power cable connection issue. | Check the power cable connection and press the power button. | |
| Connected input is not enabled. | Check that the connected input is enabled (Menu > Quick Settings > Input). | |
| Monitor is in sleep mode. | Move the mouse, or press any key on the keyboard, to switch the display on. | |
| Computer is turned off. | Check if the computer is turned on. | |
| OUT OF RANGE message being displayed. | Signals are out of the horizontal or vertical frequency range. | See the Product Specification section to set the appropriate frequency. |
| No Signal message being displayed. | Signal cable is missing or disconnected. | Check the cable and reconnect it. |
| OSD lock message is being displayed. | OSD is locked. | Go to Menu > General and set OSD Lock to Off. |
| The screen retains an image. | Displaying a still image for a prolonged time. | Use a screensaver to extend the lifetime of the monitor. |
| Screen display is unstable and shaky / Images displayed on the monitor leave shadow trails. | Inappropriate resolution selected. | If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), change to 1080P or the recommended resolution. |
| The display color is abnormal. | Color setting is not 24 bit (true color) or higher. | Set the color to 24 bit or higher. In Windows, go to Control Panel > Display > Settings > Color Quality. |
| Signal cable connection issue. | Check if the signal cable is connected properly. Reconnect the cable or reinsert the PC's graphics card. | |
| Unrecognized monitor, Plug&Play message. | Display driver not installed. | Install the display driver from the CD or download it from http://www.lg.com. |
| No sound from the headphone port or speaker. | Volume too low or audio output not set correctly. | Increase volume on the monitor. Set PC audio output to the monitor. |