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LG 27UD88-W - User Manual

LG 27UD88-W
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www.lg.com
Please read the safety information carefully before using the product.
IPS LED Monitor (LED Monitor) Model List
Owner's Manual
IPS LED MONITOR
(LED MONITOR*)
*LG LED Monitors are LCD Monitors with LED Backlighting.
27UD88

Table of Contents

Questions and Answers

  • F
    feliciasmithAug 13, 2025
    Why is nothing displayed on my LG 27UD88-W screen?
    • M
      Mr. Justin GrayAug 13, 2025
      If nothing is displayed on your LG monitor, there are several things to check: * Ensure the power cord is correctly plugged into the power outlet. * Verify the power cable connection and press the power button. * Confirm the connected input is enabled by going to Menu > Quick Settings > Input. * If the monitor is in sleep mode, move the mouse or press any key on the keyboard. * Make sure the computer is turned on. * Check the cable and reconnect it. * If signals from the PC are out of the monitor's frequency range, see the Product Specification section of this manual to set the appropriate frequency.
  • E
    Edward DuranAug 17, 2025
    What to do if there is no sound from the headphone port or speaker of my LG 27UD88-W?
    • B
      Brian HowardAug 17, 2025
      If there is no sound from the headphone port or speaker of your LG monitor: * Try increasing the volume using the button on the monitor. * Set the audio output of the PC to the monitor you are using. On Microsoft Windows, go to Control Panel > Hardware and Sound > Sound and set the monitor as the default device.
  • L
    Lori CookAug 21, 2025
    What to do if the screen display is unstable and shaky on my LG 27UD88-W?
    • A
      Abigail SmithAug 21, 2025
      If your LG monitor's screen display is unstable or shaky, and images leave shadow trails, it might be due to the resolution being set to HDMI 1080i 60/50 Hz (interlaced). Try changing the resolution to 1080P or the recommended resolution.
  • B
    Brittany BranchAug 25, 2025
    Why does the screen retain an image on my LG Monitor?
    • S
      Samantha CoxAug 25, 2025
      Displaying a still image for a prolonged time may cause damage to the screen, resulting in the retention of the image. To extend the lifetime of your LG monitor, use a screensaver.
  • K
    Katherine SandersAug 28, 2025
    Why PC(or USB host device) cannot detect USB peripheral connected to USB-A port on my LG 27UD88-W?
    • B
      Billy BallAug 28, 2025
      If your PC or USB host device cannot detect a USB peripheral connected to the USB-A port on your LG monitor: * When 'Quick Charge' is set to On, the device will charge quickly but cannot use USB data. * When 'Quick Charge' is set to Off, the device will charge slowly and can use USB data.
  • K
    Kristin ChaneySep 1, 2025
    Why is the display color discolored on my LG Monitor?
    • W
      William BlairSep 1, 2025
      If the display color on your LG monitor is discolored: * Set the color to 24 bit (true color) or higher by going to Control Panel > Display > Settings > Color Quality in Windows. * Check if the signal cable is connected properly; reconnect the cable or reinsert the PC's graphics card. Note that some discoloration is normal for an LCD screen and not an error.
  • M
    Matthew MarshallSep 4, 2025
    How to fix the "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message on my LG 27UD88-W Monitor?
    • A
      Austin WaltersSep 4, 2025
      If you see an "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message, be sure to install the display driver from the LG website. Also, make sure to check if the video card supports Plug&Play function.
  • E
    Eric WilliamsSep 8, 2025
    How to turn off the OSD lock message on my LG Monitor?
    • S
      Sheila SanchezSep 8, 2025
      To turn off the OSD lock message on your LG monitor, go to Menu > General and set OSD Lock to Off.

Summary

Assembling and Preparing the Monitor

Product Components Overview

Lists all included accessories and components in the box.

Important Safety Precautions

Warnings regarding component use, counterfeit parts, and cable certification.

Supported Drivers and Software

Monitor Components and Controls

Joystick Button and Power LED

Using the Joystick Button

Input Connector Identification

Moving and Lifting the Monitor Safely

Screen Protection Warning

Caution against touching the screen to prevent damage or pixel issues.

Safe Handling Instructions

Guidelines for preventing scratches and ensuring stability during movement.

Installing the Monitor Base

Assembling the Stand Base

Assembly Caution

Installing the Monitor on a Table

Table Installation Steps

Power Cord Connection Safety

Important warnings regarding the use of the correct power cord and grounding.

Installation Electric Shock Warning

Caution about electric shock risk during monitor setup.

Adjusting Monitor Ergonomics

Adjusting Screen Angle

Adjusting Stand Height

Ergonomic Adjustment Warnings

Warnings about finger safety during angle and height adjustments.

Using the Pivot Feature

Pivot Rotation Caution

Detaching and Mounting the Monitor

Wall Mount Plate Installation

Installing the Monitor on a Wall

Wall Mounting Requirements

Wall Mounting Safety Cautions

Warnings about electric shock, falling monitor, and screw use.

Wall Mounting Screw Guidelines

Connecting the Monitor to Devices

Connecting to PC Inputs

Connecting External Devices

HDMI Connection for AV Devices

USB Peripherals Connection

USB Device Usage Cautions

Cautions regarding USB device recognition, compatibility, and power.

User Settings and Menu Navigation

Activating the Main Menu

Main Menu Features Overview

Customizing Monitor Settings

Menu Settings Navigation

Quick Settings Adjustment

Adjusting basic parameters like Brightness, Contrast, Volume, Input, and Ratio.

Quick Settings Descriptions

Picture-by-Picture (PBP) Mode

PBP Mode Configuration

Settings for selecting input sources for PBP mode.

PBP Mode Options

Details on Sub, Sound Out, Swap, Sub Full, and Ratio settings for PBP.

Picture Settings and Modes

Picture Mode Selection

Guide to selecting various picture modes for different content types.

Picture Adjustments

Details on color adjustments, calibration, and game-specific settings.

Picture Adjustments Details

SUPER RESOLUTION+ Settings

Sharpness and Black Level Adjustment

HDMI ULTRA HD Deep Color

Advanced Picture Settings

Game Adjustments

Settings for response time, FreeSync, and black level for gaming.

Color Adjustments

Options for gamma, color temperature, and individual color tuning.

General Settings

Language and Energy Saving

Power LED and Auto Standby

USB Quick Charge and Buzzer

OSD Lock Function

Resetting Monitor Settings

Reset to Default Settings

Returning all monitor settings to their factory defaults.

Troubleshooting Common Issues

No Display or Signal Problems

Solutions for blank screens, out-of-range, or no signal messages.

OSD Lock and Image Retention

Resolving OSD lock issues and preventing screen image sticking.

Display Stability and USB Issues

Troubleshooting unstable displays and USB device detection problems.

Display Color Discoloration

Steps to fix unstable or discolored display output.

Monitor Recognition and Drivers

Resolving "Unrecognized monitor" messages and installing drivers.

No Sound from Ports

Solutions for missing audio output from DisplayPort or HDMI.

Monitor Specifications

Screen and Resolution Details

Input Connectors and Signals

Power Consumption and Adapter

LG 27UD88-W Specifications

General IconGeneral
Cable lock slot-
Tilt angle range-3 - 20 °
Height adjustment110 mm
Number of OSD languages16
Panel mounting interface100 x 100 mm
On Screen Display (OSD) languagesCHI (SIMPL), DEU, ENG, ESP, FIN, FRE, GRE, ITA, JPN, KOR, POL, POR, RUS, SWE, UKR
3DNo
Pixel pitch0.1554 x 0.1554 mm
Screen shapeFlat
Backlight typeW-LED
Display diagonal27 \
Display technologyLED
Native aspect ratio16:9
Maximum refresh rate60 Hz
sRGB coverage (typical)99 %
Digital vertical frequency56 - 61 Hz
Digital horizontal frequency30 - 135 kHz
Display brightness (typical)350 cd/m²
Supported graphics resolutions3840 x 2160
Dynamic contrast ratio marketing nameMega Contrast
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (off)0.3 W
Power consumption (standby)- W
Power consumption (typical)29 W
Power consumption (PowerSave)1.2 W
USB hub version3.2 Gen 1 (3.1 Gen 1)
USB upstream port typeUSB Type-C
Number of upstream ports1
VGA (D-Sub) ports quantity0
USB Type-A downstream ports quantity2
Sustainability certificatesEPEAT Gold
CertificationUL (cUL), TUV, CB, FCC-B, CE, KC, EPA, ErP, ROHS, REACH, Ultra HD, Windows 10, DisplayPort, USB type-C PD + DP Alt.Mode, FreeSync
Product colorBlack, Silver, White
Market positioningGaming
Package depth171 mm
Package width835 mm
Package height476 mm
Package weight10100 g
Cables includedDC, DisplayPort, USB, USB Type-C
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)222.6 mm
Height (with stand)425.2 mm
Weight (with stand)6200 g
Depth (without stand)42.7 mm
Width (without stand)615 mm
Height (without stand)365.1 mm
Weight (without stand)4700 g

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