Owner's Manual IPS LED MONITOR (LED MONITOR*) *Disclaimer: LG LED Monitor applies LCD screen with LED backlights.This product is a computer monitor and not for television purpose. Please read the safety information carefully before using the product. IPS LED Monitor (LED Monitor) Model List 27UD88 www.lg.com 2 CONTENTS ENGLISH ENG 3 LICENSE 18 18 4 ASSEMBLING AND PREPARING 19 USER SETTINGS 4 5 6 6 7 8 9 9 10 11 12 12 13 14 14 14 15 19 20 20 20 21 22 25 27 Product Components Supported Drivers and Software Component and Button Description - How to Use the Joystick Button Input Connector Moving and Lifting the Monitor Installing the Monitor - Assembling the stand base - Using the cable holder - Installing onto a table - Adjusting the angle - Adjusting the Stand Height - Pivot Feature - Using the Kensington lock - Detaching the Stand Body - Installing the wall mount plate - Installing to a wall 16 USING THE MONITOR 16 16 16 16 17 17 Connecting to a PC - HDMI connection - DisplayPort connection - USB-C connection Connecting Peripherals - USB Cable connection - PC - Connecting Headphones Service only port Activating the Main Menu Customizing settings - Menu Settings - -Quick Settings - -PBP - -Picture - -General - -Reset 28 TROUBLESHOOTING 30 SPECIFICATIONS 30 31 31 31 32 32 27UD88 Factory Support Mode (Preset Mode, PC) HDMI DisplayPort/ USB-C HDMI Timing (Video) Power LED 3 LICENSE The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries. VESA, VESA logo, DisplayPort Compliance Logo and DisplayPort Compliance Logo for dual-mode source are all registered trademarks of the Video Electronics Standards Association. The SuperSpeed USB Trident logo is a registered trademark of USB Implementers Forum, Inc. The following content is only applied to the monitor which is sold in Europe market and which needs to meet the ErP Directive: * This monitor is set to be turned off automatically in 4 hours after you turned on display if there is no adjustment to display. * To make this setting be disabled, change the option to ‘Off’ in OSD menu of “Automatic Standby”. ENGLISH ENG Each model has different licenses. Visit www.lg.com for more information on the license. 4 ASSEMBLING AND PREPARING ENGLISH ENG Product Components Please check whether all the components are included in the box before using the product. If there are missing components, contact the retail store where you purchased the product. Note that the product and components may look different from those shown here. CD(Owner's Manual) / Card HDMI Cable Stand Base Power Cord DisplayPort Cable Stand Body AC-DC Adapter USB C-C cable USB C-A cable Cable Holder CAUTION Always use genuine components to ensure safety and product performance. yy The product warranty will not cover damage or injury caused by the use of counterfeit components. yy yy It is recommend that use the supplied components. yy If you use generic cables not certified by LG, the screen may not display or there may be image noises. NOTE Note that the components may look different from those shown here. yy Without prior notice, all information and specifications in this manual are subject to change to improve the yy performance of the product. To purchase optional accessories, visit an electronics store or online shopping site or contact the retail store yy where you purchased the product. 5 Supported Drivers and Software Drivers and Software Installation Priority 27UD88 Monitor Driver Recommended O OnScreen Control Recommended O Dual Controller Optional O TRUE COLOR PRO Optional O Required and Recommended: You can download and install the latest version from the enclosed CD or from the yy LGE website (www.lg.com). Optional: You can download and install the latest version from the LGE website (www.lg.com). yy ENGLISH ENG Check the drivers and software supported by your product and refer to the manuals on the CD enclosed in the product package. 6 Component and Button Description ENGLISH ENG Joystick Button Power LED yyOn: power is on yyOff: power is off How to Use the Joystick Button You can easily control the functions of the monitor by pressing the joystick button or moving it left/right with your finger. Basic Functions ◄/► Power on Press the joystick button once with your finger to turn on the monitor. Power off Press and hold the joystick button once with your finger to turn off the monitor. Volume Control You can control the volume by moving the joystick button left/right. NOTE yy The joystick button is located at the bottom of the monitor. 7 Input Connector ENGLISH ENG 8 Moving and Lifting the Monitor ENGLISH ENG When moving or lifting the monitor, follow these instructions to prevent the monitor from being scratched or damaged and to ensure safe transportation regardless of its shape or size. CAUTION As far as possible, avoid touching the monitor yy screen. This may result in damage to the screen or some of the pixels used to create images. It is advisable to place the monitor in the original yy box or packing material before attempting to move it. Before moving or lifting the monitor, disconnect yy the power cord and all cables. Hold the top and bottom of the monitor frame yy firmly. Do not hold the panel itself. If you use the monitor panel without the stand yy base, its joystick button may cause the monitor to become unstable and fall, resulting in damage to the monitor or human injury. In addition, this may cause the joystick button to malfunction. When holding the monitor, the screen should yy face away from you to prevent it being scratched. When moving the monitor, avoid any strong shock yy or vibrations to the product. When moving the monitor, keep it upright, yy never turn the monitor on its side or tilt it sideways. 9 3 Installing the Monitor ENGLISH ENG Assembling the stand base 1 4 CAUTION To protect the screen from scratches, cover the yy surface with a soft cloth. 2 Stand Body NOTE Press the stand until the button reaches the top. yy Stand Base or 10 CAUTION ENGLISH ENG yy Illustrations in this document represent typical procedures, so they may look different from the actual product. y y Applying excessive force when tightening screws may cause damage to the monitor. Damage caused in this way will not be covered by the product warranty. y y Do not carry the monitor upside down by just holding the base. This may cause the monitor to fall off the stand and could result in personal injury. y y When lifting or moving the monitor, do not touch the monitor screen. The force applied to the monitor screen may cause damage to it. NOTE You can disassemble the stand in the reverse yy order of the assembly. Using the cable holder Arrange the cables using the cable holder as shown in the illustration. Cable Holder 11 Installing onto a table Cautions When Connecting Power Cord ENGLISH ENG 1 Lift the monitor and place it on the table in an upright position. Place at least 100 mm away from the wall to ensure sufficient ventilation. 100 mm 100-240 V ~ 100 mm 100 mm 100 mm Make sure to use the power cord that is proyy vided in the product package and connect it to a grounded power outlet. If you need another power cord, please contact yy your local dealer or the nearest retail store. 2 Connect the power adapter to the monitor and then plug the power cord into the wall outlet. 3 2 1 3 Press the joystick button on the bottom of the monitor to turn on the monitor. CAUTION Unplug the power cord prior to moving or installyy ing the monitor. There is risk of electric shock. 12 ENGLISH ENG Adjusting the angle Adjusting the Stand Height 1 Place the monitor in an upright position, mount- 1 Handle the monitor with both hands for safety. ed on the stand base. 2 Adjust the angle of the screen. The angle of the screen can be adjusted forwards or backwards for a comfortable viewing experience. 2 The height can be adjusted up to 110.0 mm. 110.0 mm Rear Side Front Side WARNING To avoid injury to the fingers when adjusting the yy screen, do not hold the lower part of the monitor's frame as illustrated below. WARNING yy Do not put your fingers or hand between the screen and the base (chassis) when adjusting the screen's height. Be careful not to touch or press the screen area yy when adjusting the angle of the monitor. 13 Pivot Feature 3 Rotate the monitor clockwise as shown in the figure. Head Stand 4 Complete the installation by rotating the monitor 90° as shown below. WARNING yy To avoid scratching the stand base, make sure that when rotating the monitor using the pivot feature, the stand does not make contact with the monitor. 1 Raise the monitor to the maximum height. NOTE 2 Adjust the angle of the monitor in the direction of the arrow as shown in the figure. yy Auto Pivot feature of the display is not supported. yy The screen can be rotated easily using the screen pivot shortcut key provided with your Windows operating system. Note that some Windows versions and some graphics card drivers may use different settings for the screen pivot key or may not support the pivot key at all. yy Windows screen pivot shortcut keys -- 0°: Ctrl + Alt + Up arrow key (↑) -- 90°: Ctrl + Alt + Left arrow key (←) -- 180°: Ctrl + Alt + Down arrow key (↓) -- 270°: Ctrl + Alt + Right arrow key (→) ENGLISH ENG The pivot feature allows the monitor to rotate 90° clockwise. 14 WARNING ENGLISH ENG yy Take care when rotating the monitor if the cable is connected. yy To avoid injury when rotating the display, do not place your fingers between the display and the stand base. Detaching the Stand Body 1 Place the monitor’s screen face down. To protect the screen from scratches, cover the surface with a soft cloth. 2 Remove the stand from the monitor by press- ing the button on the bottom center of the back of the monitor. Using the Kensington lock The Kensington security system connector is located at the back of the Monitor set. For more information on installation and usage, refer to the Kensington lock user manual or visit the website at http://www.kensington.com. Connect the Kensington security system cable between the Monitor set and a table. Installing the wall mount plate This monitor supports the specification of the standard wall mount plate or compatible device. 1 Place the screen face down. To protect the screen from scratches, cover the surface with a soft cloth. 2 Place the wall mount plate onto the monitor and align it with the screw holes. 3 Tighten the four screws to fix the plate to the monitor using a screwdriver. NOTE NOTE Use of the Kensington lock is optional. The accesyy sories can be purchased at your local electronics store. The wall mount plate is sold separately. yy For more information on installation, refer to the yy wall mount plate's installation guide. Be careful not to use excessive force when yy mounting the wall mount plate, as this can damage the monitor's screen. 15 Wall Mount (A x B) yy Installing to a wall A 100 mm 100 mm 100 mm 100 mm To install the monitor to a wall, attach a wall mounting bracket (optional) to the back of the monitor. Make sure that the wall mounting bracket is securely fixed to the monitor and to the wall. CAUTION Unplug the power cord before moving or installyy ing the monitor to avoid electric shocks. Installing the monitor on the ceiling or on a yy slanted wall may result in the monitor falling off, which could lead to injury. Please use the genuine LG wall mounting bracket. For more information, contact your local retail store or a qualified installer. Applying excessive force when fastening screws yy may cause damage to the monitor. Damage caused in this way will not be covered by the product warranty. Use the wall mounting bracket and screws yy that conform to the VESA standard. Damage caused by the use or misuse of inappropriate components will not be covered by the product warranty. Screw length from outer surface of back cover yy should be under 8mm. Wall mount Pad 1 If you use screw longer than standard, the monitor might be damaged internally. 2 If you use improper screw, the product might be damaged and drop from mounted position. In this case, LG Electronics is not responsible for it. Wall Mount (A x B) Standard screw Number of screws Wall Mount Plate (Optional) 100 x 100 M4 x L10 4 RW120 B ENGLISH ENG Install the monitor at least 100 mm away from the wall and leave about 100 mm of space at each side of the monitor to ensure sufficient ventilation. Detailed installation instructions can be obtained from your local retail store. Please refer to the manual to install and set up a tilting wall mounting bracket. Back Cover Wall mount Pad Back Cover Standard screw : Max.8mm NOTE Use the screws specified by the VESA standard. yy The wall mount kit includes the installation guide yy and all necessary parts. The wall mounting bracket is optional. The accesyy sories can be purchased at your local retail store. The length of the screw may differ for each wall yy mounting bracket. Ensure the correct length screw is used. For more information, please refer to the user yy manual for the wall mounting bracket. 16 USING THE MONITOR ENGLISH ENG Connecting to a PC This monitor supports the *Plug and Play yy feature. *Plug and Play: A feature that allows you to add a device to your computer without having to reconfigure anything or install any manual drivers. DisplayPort connection Transmits the digital video and audio signals from your PC to the monitor. Connect your PC to the monitor using the DisplayPort cable as illustrated below. Press the menu button and then select the input option from the input menu. HDMI connection Transmits the digital video and audio signals from your PC and A/V devices to the monitor. Connect your PC and AV device to the monitor with the HDMI cable as illustrated below. Press the menu button and then select the input option from the input menu. DP OUT NOTE There may be no video or audio output depending yy on the DP version of the PC. yy If you use generic cables not certified by LG, the screen may not display or there may be image noises. USB-C connection Transmits digital video and audio signals and USB data from your PC to the monitor. Connect the monitor to your PC using the USB-C cable as shown in the illustration below. Press the menu button and then select the input option from the input menu. (USB C-A cable) (Data Only) (USB C-C cable) NOTE If you use HDMI PC, it can cause compatibility yy problem. Use a certified cable with the HDMI logo attached. yy If you do not use a certified HDMI cable, the screen may not display or a connection error may occur. Recommended HDMI cable types yy - High-Speed HDMI®/TM Cable - High-Speed HDMI®/TM Cable with Ethernet NOTE yyPD(Power Delivery), DP Alternate Mode(DP over USB-C) and USB Data are supported via USB-C Port. yyFeatures may not work properly depending on the connected device’s speciﬁcations and the environment. USB-C port is not for the Monitor Power source yy but for a PC power source. Connect Adapter to supply power to the Monitor . 17 Connecting Peripherals The USB port on the product functions as a USB hub. Please connect the USB C-C or USB C-A cable to the PC. NOTE Make sure to install the most recent Windows OS yy service pack before using the product. Peripheral devices are sold separately. yy A keyboard, mouse, or USB device can be yy connected to the USB port. When Quick Charge is set to On , data yy transmission through the USB1/2 port is not available (e.g. connecting your keyboard, mouse, or other USB storage devices to the monitor). (Go to General > Quick Charge to set Quick Charge to On or Off .) The charging speed may vary depending on the yy device. (sold separately) CAUTION Cautions When Using a USB Device A USB device with an automatic recognition yy program installed, or that uses its own driver, may not be recognized. Some USB devices may not be supported or may yy not work properly. It is recommended to use a USB hub or hard disk yy drive with power supplied. (If the power supply is not adequate, the USB device may not be recognized properly.) If Quick Charge is off and the upstream Port is yy not connected with Host PC, monitor may not support ‘Charge’ . ENGLISH ENG USB Cable connection - PC 18 ENGLISH ENG Connecting Headphones Service only port Connect peripherals to the monitor via the headphones port. Connect as illustrated. The port is used only for “Service”. SERVICE ONLY (sold separately) NOTE yy Peripheral devices are sold separately. yy If you use angled earphones, it may cause a problem with connecting another external device to the monitor. Therefore, it is recommended to use straight earphones. Angled Straight yy Depending on the audio settings of the PC and external device, headphones and speaker functions may be limited. 19 USER SETTINGS ENGLISH ENG Activating the Main Menu 1 Press the joystick button on the bottom of the monitor. 2 Move the joystick up/down (▲/▼) and left/right(◄/►) to set the options. 3 Press the joystick button once more to exit the main menu. Joystick Button Button Menu Status Description Main menu disabled Enables the main menu. Main menu enabled Exits the main menu. (Holding down the button to turn off the monitor. You can turn off the monitor this way at any time, including when the OSD is on.) ◄ ► ▲ ▼ Main menu disabled Adjusts the monitor volume level. Main menu enabled Enters the menu features. Main menu disabled Adjusts the monitor volume level. Main menu enabled Enters the input feature. Main menu disabled Enables the main menu. Main menu enabled Enters the game mode feature. Main menu disabled Enables the main menu. Main menu enabled Turns off the monitor. Main Menu Features Main Menu Description Menu Configures the screen settings. Game Mode You can change Picture Mode to a gaming mode. Input Sets input mode. Monitor off Turns off the monitor. Exit Exits the main menu. 20 Customizing settings ENGLISH ENG Menu Settings -Quick Settings 1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Menu. 2 Go to Quick Settings > Brightness by moving the joystick. 3 Configure the options following the instructions that appear in the bottom right corner. 4 To return to the upper menu or set other menu items, move the joystick to ◄ or pressing ( / OK) it. 5 If you want to exit the OSD menu, move the joystick to ◄ until you exit. Each option is described below. Menu > Quick Settings Brightness Contrast Volume Description Adjusts the color contrast and brightness of the screen. Adjusts the volume. NOTE yy You can adjust Mute/ Unmute by moving the joystick button to ▼ in the Volume menu. Input Selects the current input mode. Ratio Adjusts the screen ratio. Wide Displays the video in wide-screen, regardless of the video signal input. Original Displays a video according to the input video signal aspect ratio. 1:1 The aspect ratio is not adjusted from the original. NOTE The display may look the same for Wide, Original, and 1:1 options at the recommended resolution. yy The ratio is disabled in the interlaced signal. yy 21 -PBP ENGLISH ENG 1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Menu. 2 Go to PBP by moving the joystick. 3 Configure the options following the instructions that ap- pear in the bottom right corner. 4 To return to the upper menu or set other menu items, move the joystick to ◄ or pressing ( / OK) it. 5 If you want to exit the OSD menu, move the joystick to ◄ until you exit. Each option is described below. Menu > PBP Sub Description Displays the screens of two input modes on one monitor. PBP Connection Main Screen (Left) Sub Screen (Right) HDMI 1 HDMI 2 DisplayPort USB-C - - O O HDMI 1 HDMI 2 - - O O DisplayPort O O - - USB-C O O - - Sound Out Changes the audio output in PBP mode. Swap Toggles between the main screen and sub screen in PBP mode. Sub Full Converts the sub screen of PBP mode to the wide screen. Ratio Adjusts the aspect ratio of the main screen or sub screen. Main Sub Wide Displays the video to fit the PBP screen, regardless of the video signal input. Original Displays the video in the aspect ratio of the video signal input on the PBP screen. Wide Displays the video to fit the PBP screen, regardless of the video signal input. Original Displays the video in the aspect ratio of the video signal input on the PBP screen. NOTE yy When the Sub mode is Off, Sound Out, Swap, Sub Full, and Ratio menus become disabled. The Main/Sub options for Ratio become disabled if there is no signal. yy The optimal resolution for PBP mode is set automatically when PBP mode is set. 22 -Picture ENGLISH ENG 1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Menu. 2 Go to Picture by moving the joystick. 3 Configure the options following the instructions that appear in the bottom right corner. 4 To return to the upper menu or set other menu items, move the joystick to ◄ or pressing ( / OK) it. 5 If you want to exit the OSD menu, move the joystick to ◄ until you exit. Each option is described below. Menu > Picture Picture Mode Description Custom Allows the user to adjust each element. The color mode of the main menu can be adjusted. Reader Optimizes the screen for viewing documents. You can brighten the screen in the OSD menu. sRGB A standard RGB color space for the monitor and printer. Color Weakness This mode is for users who cannot distinguish between red and green. It enables users with color weakness to easily distinguish between the two colors. FPS Game 1 This mode is optimized for FPS games. FPS Game 2 It has a higher Black Stabilizer value than FPS Game 1. It is suitable for very dark FPS games. RTS Game This mode is optimized for RTS Game. Custom (Game) In this mode, users can customize various elements including game-related options. EBU A standard TV PAL color space for broadcasting. REC709 A standard HDTV color space for broadcasting. SMPTE-C A standard TV NTSC color space for broadcasting. DICOM Optimizes the screen for viewing X-ray images. You can brighten the screen in the OSD menu. NOTE yy This product has been approved as an IT device and not as a medical device. It is intended for office use only. (It may be used for education and reference purposes but not for medical diagnosis.) Calibration 1 Adjusts to the last calibrated screen. Calibration 2 Adjusts to the previously calibrated screen. NOTE yy If the picture mode is changed in the DP (DisplayPort) input, the screen may flicker or the resolution of your PC screen may be affected. yy Calibration 2 : Installation of TRUE COLOR PRO and proceeding Calibration will enable this menu. 23 Picture Adjust SUPER RESOLUTION+ Optimized picture quality is displayed when a user wants crystal clear images. It is effective for high quality video or game. Middle The optimized picture quality is displayed when a user wants images between low and high modes for comfortable viewing. It is effective for UCC or SD video. Low The optimized picture quality is displayed when a user wants smooth and natural images. It is effective for slow-moving pictures or still images. Off Select this option for everyday viewing. SUPER RESOLUTION+ is turned off in this mode. Sharpness Adjusts the sharpness of the screen. Black Level Sets the offset level (for HDMI only). yy Offset: as a reference for a video signal, this is the darkest color the monitor can display. High Keeps the current contrast ratio of the screen. Low Lowers the black levels and raises the white levels from the current contrast ratio of the screen. HDMI ULTRA HD Deep Provides sharper images when connected to a device supporting ULTRA HD Color Deep Color. 4K@60 Hz Support Format1) Resolution Frame rate (Hz) Color Depth / Chroma Sampling 8 bit 10 bit YCbCr 4:2:0 3840 x 2160 59.94 60.00 YCbCr 4:2:2 YCbCr 4:4:4 - RGB 4:4:4 - 1) Supported when HDMI ULTRA HD Deep Color is set to On. NOTE yy If the connected device does not support ULTRA HD Deep Color, the feature may not work properly. y y If a problem occurs, set the HDMI ULTRA HD Deep Color option to Off. DFC Adjusts the brightness automatically according to the screen. ENGLISH ENG High 24 Game Adjust Response Time ENGLISH ENG FreeSync Sets a response time for displayed pictures based on the speed of the screen. For a normal environment, it is recommended that you use Middle. For a fastmoving picture, it is recommended that you use high. Setting to High may cause image sticking. High Sets the response time to High. Middle Sets the response time to Middle. Low Sets the response time to Low. Off Does not use the response time improvement feature. Provides seamless and natural images by synchronizing the vertical frequency of the input signal with that of the output signal. CAUTION yySupported Interface: DisplayPort. yySupported Graphic Card : A graphic card that supports AMD’s FreeSync is necessary. Supported Version : Make sure to update the graphic card to yy the latest driver. For more information and requirement, refer to AMD website at yy http://www.amd.com/FreeSync Color Adjust On FreeSync function on. Off FreeSync function off. Black Stabilizer You can control the black contrast to have better visibility in dark scenes. Increasing the Black Stabilizer value brightens the low gray level area on the screen. (You can easily distinguish objects on dark game screens.) Reducing the Black Stabilizer value darkens the low gray level area and increases the dynamic contrast on the screen. Gamma The higher the gamma value, the darker the image becomes. Likewise, the lower the gamma value, the lighter the image becomes. If you do not need to adjust the gamma settings, select Off. Color Temp Manual Adjusts the color temperature in 500K increments. (Note that 9300K is supported instead of 9500K.) Custom The user can adjust it to red, green, or blue by customization Red You can customize the picture color using Red, Green, and Blue colors. Green Blue Six Color Meets the user requirements for colors through adjusting the color and saturation of the six colors(Red_Hue, Red_Saturation, Green_Hue, Green_Saturation, Blue_Hue, Blue_Saturation, Cyan_Hue, Cyan_Saturation, Magenta_ Hue, Magenta_Saturation, Yellow_Hue, Yellow_Saturation) and saving the settings. *Hue: Adjusts tone of the screen. *Saturation: Adjusts the saturation of the screen colors. The lower the value, less saturated and bright the colors become. The higher the value, the more saturated and dark the colors become. Reset Aspect Marker Returns the color settings to the default settings. This function is to express aspect ratio for screen . Off Disables Aspect Marker 17:9 Enables to marker for 17:9 4:3 Enables to marker for 4:3 2.35:1 Enables to marker for 2.35:1 2.39:1 Enables to marker for 2.39:1 25 -General ENGLISH ENG 1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Menu. 2 Go to General by moving the joystick. 3 Configure the options following the instructions that ap- pear in the bottom right corner. 4 To return to the upper menu or set other menu items, move the joystick to ◄ or pressing ( / OK) it. 5 If you want to exit the OSD menu, move the joystick to ◄ until you exit. Each option is described below. Menu > General Description Language Sets the menu screen to the desired language. SMART ENERGY SAVING High Saves energy using the high-efficiency SMART ENERGY SAVING feature. Low Saves energy using the low-efficiency SMART ENERGY SAVING feature. Off Disables the SMART ENERGY SAVING feature. Power LED Turns the power LED on the front of the monitor on or off. On The power LED turns on automatically. Off The power LED turns off. Automatic Standby Feature that automatically turns off the monitor when there is no movement on the screen for a period of time. You can set a timer for the auto-off function. (Off, 4 H, 6 H, and 8 H) DisplayPort 1.2 Enables or disables DisplayPort 1.2. NOTE yy Be sure to configure this option according to the DisplayPort version supported by your graphics card. Set this option to Disable if your graphics card does not support DisplayPort 1.2. 26 Menu > General Quick Charge Description Quick Charge is a feature that rapidly charges the device connected to the USB 3.0 port. ENGLISH ENG On Enables Quick Charge. Off Disables Quick Charge. NOTE yy When Quick Charge is set to On, data transmission through the USB1/2 port is not available (e.g. connecting your keyboard, mouse, or other USB storage devices to the monitor). Buzzer OSD Lock This feature lets you set the sound generated from Buzzer when your monitor powers on. On Enables your monitor's Buzzer. Off Disables your monitor's Buzzer. This feature disables the configuration and adjustment of menus. On Enables OSD Lock. Off Disables OSD Lock. NOTE yy All features are disabled except Brightness, Contrast, Volume, Input in Quick Settings, and OSD Lock in General.. 27 -Reset ENGLISH ENG 1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Menu. 2 Go to Reset by moving the joystick. 3 Configure the options following the instructions that ap- pear in the bottom right corner. 4 To return to the upper menu or set other menu items, move the joystick to ◄ or pressing ( / OK) it. the joystick to ◄ 5 If you want to exit the OSD menu, move Quick Charge until you exit. Each option is described below. Menu > Reset Description Do you want to reset your settings? Reset Returns to the default settings. Cancel Cancel the select. 28 TROUBLESHOOTING ENGLISH ENG Nothing is displayed on the screen. Is the power LED on? Check if the power cord is correctly plugged into the power outlet. yy Check the power cable connection and press the power button. yy Is the power on and the power LED displaying white? Check that the connected input is enabled (Menu > Quick Settings > yy Input). Is the power LED blinking? If the monitor is in sleep mode, move the mouse, or press any key on the yy keyboard, to switch the display on. Check if the computer is turned on. yy Is the OUT OF RANGE message being displayed? This occurs when signals transferred from the PC (graphics card) are out yy of the horizontal or vertical frequency range of the monitor. Please see the Product Specification section of this manual to set the appropriate frequency. Is the No Signal message being displayed? This is displayed when the signal cable between the PC and the monitor is yy missing or disconnected. Check the cable and reconnect it. Is the monitor's power cord plugged in? The OSD lock message is being displayed. Are some functions not avail-able when you press the Menu button? The OSD is locked. Go to Menu > General and set OSD Lock to Off. yy The screen retains an image. Does image sticking occur even when the monitor is turned off? Displaying a still image for a prolonged time may cause damage to the yy screen, resulting in the retention of the image. To extend the lifetime of the monitor, use a screensaver. yy Screen display is unstable and shaky / Images displayed on the monitor leave shadow trails. Did you select the appropriate resolution? If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen yy may be flickering. Change the resolution to 1080P or the recommended resolution. PC(or USB host device) cannot detect USB peripheral connected to USB-A port. Did you change the OSD Menu “Quick Charge” off? When set “Quick Charge” On, device will be charged quickly, but cannot yy use USB data. When Set “Quick Charge” Off, device will be charged slowly, and can use yy USB data. NOTE yy Vertical frequency In order to display an image, the screen must be refreshed dozens of times per second, like a fluorescent lamp. The number of times the screen is refreshed per second is called vertical frequency, or refresh rate, and is represented by Hz. yy Horizontal frequency The time it takes to display one horizontal line is called the horizontal cycle. If 1 is divided by the horizontal interval, the result is the number of horizontal lines displayed per second. This is called horizontal frequency and is represented by kHz. 29 NOTE The display color is abnormal. Does the display appear discol-ored (16 colors)? Set the color to 24 bit (true color) or higher. In Windows, go to Con-trol yy Panel > Display > Settings > Color Quality. Does the display color appear unstable or monochrome? Check if the signal cable is connected properly. Reconnect the cable or yy reinsert the PC's graphics card. Are there spots on the screen? When using the monitor, pixilated spots (red, green, blue, white, or black) yy may appear on the screen. This is normal for an LCD screen. It is not an error, nor is it related to the monitor's performance. Do you see an "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message? Have you installed the display driver? Be sure to install the display driver from the display driver CD (or diskette) yy that comes with your display. Or, you can also download the driver from our web site: http://www.lg.com. Make sure to check if the video card supports Plug&Play function. yy No sound from the headphone port or speaker. Are images displayed using DisplayPort or HDMI input without sound? Try increasing the volume using the button on the monitor. yy Set the audio output of the PC to the monitor you are using. On Microsoft yy Windows, go to Control Panel > Hardware and Sound > Sound > set the monitor as default device. ENGLISH ENG Check if the graphics card's resolution or frequency is within the range allowed by the monitor and set it to the yy recommended (optimal) resolution in Control Panel > Display > settings. Not setting the graphics card to the recommended (optimal) resolution may result in blurred text, a dimmed yy screen, a truncated display area, or misalignment of the display. The setting methods may be different depending on the computer or operating system, and some resolutions yy may not be available depending on the performance of the graphics card. If this is the case, contact the manufacturer of the computer or graphics card for assistance. Some graphics cards may not support 3840x2160 resolution. If the resolution cannot be displayed, contact the yy manufacturer of your graphics card. 30 SPECIFICATIONS ENGLISH ENG 27UD88 LCD Screen Resolution Video Signal Type TFT (Thin Film Transistor) LCD (Liquid Crystal Display) Screen Pixel Pitch 0.1554 mm x 0.1554 mm Maximum Resolution 3840 x 2160 @ 60 Hz Recommended Resolution 3840 x 2160 @ 60 Hz Horizontal Frequency 30 kHz to 135 kHz Vertical Frequency 56Hz to 61 Hz Input Connector HDMI IN1, HDMI IN2 , DP(DisplayPort) IN, H/P ,USB-C,USB( Power Voltage 19 V Power consumption (Typ.) On mode: 29.8 W Typ. ( ENERGY STAR® standard ) * 47.8 W Typ. ( Outgoing condition ) ** Sleep Mode ≤ 1.2 W Off Mode ≤ 0.3 W AC/DC adaptor Type LCAP31, LIEN CHANG ELECTRONIC ENTERPRISE production Output: 19 V 7.37 A Environmental Conditions Operating Conditions Storing Condition Temperature 0 °C to 40 °C Humidity Less than 80 % Temperature -20 °C to 60 °C Humidity Less than 85 % Stand Angle Adjustment Forwards/Backwards: -3° to 20° (Head) Dimension Monitor Size (Width x Height x Depth) Weight (Without Packaging) ) 1, 2 6.5 A With Stand 615.0 mm x 425.2 mm x 222.6 mm Without Stand 615.0 mm x 365.1 mm x 42.7 mm With Stand 6.2 kg Without Stand 4.7 kg The specifications are subject to change without notice. * The power consumption level can be different by operating condition and monitor setting. * The On mode power consumption is measured with ENERGY STAR® test standard. ** The On mode power consumption is measured with LGE test standard ( Full White pattern , Maximum resolution). 31 Factory Support Mode (Preset Mode, PC) Display Modes (Resolution) Horizontal Frequency(kHz) Vertical Frequency(Hz) Polarity(H/V) 640 x 480 31.469 59.94 -/- 800 x 600 37.879 60.317 +/+ 1024 x 768 48.363 60 -/- 1152 x 864 54.347 60.05 +/+ 1280 x 720 45 60 +/+ 1280 x 1024 63.981 60.02 +/+ 1600 x 900 60 60 +/+ 1920 x 1080 67.5 60 +/- 1920 x 2160 133.29 60 +/- 3840 x 2160 67.5 30 +/- 3840 x 2160 135 60 +/- When HDMI ULTRA HD Deep Color is set to ON. Display Modes (Resolution) Horizontal Frequency(kHz) Vertical Frequency(Hz) Polarity(H/V) Remarks 640 x 480 31.469 59.94 -/- 800 x 600 37.879 60.317 +/+ 1024 x 768 48.363 60 -/- 1152 x 864 54.347 60.05 +/+ 1280 x 720 45 60 +/+ 1280 x 1024 63.981 60.02 +/+ 1600 x 900 60 60 +/+ 1920 x 1080 67.5 60 +/- 1920 x 2160 133.32 60 +/- 3840 x 2160 66.66 30 +/- 3840 x 2160 133.32 60 +/- Remarks Recommended resolution for PBP DisplayPort/ USB-C Recommended resolution for PBP ENGLISH ENG HDMI 32 HDMI Timing (Video) ENGLISH ENG Factory support mode (Preset Mode) Horizontal Frequency(kHz) Vertical Frequency(Hz) 480p 31.5 60 720p 45.0 60 1080p 67.5 60 2160p 135 60 Power LED Mode LED Color On Mode White Sleep Mode Flashing White Off Mode Off Remarks When HDMI ULTRA HD Deep Color is set to ON. To obtain the source code under GPL, LGPL, MPL, and other open source licenses, that is contained in this product, please visit http://opensource.lge.com.In addition to the source code, all referred license terms, warranty disclaimers and copyright notices are available for download.LG Electronics will also provide open source code to you on CD-ROM for a charge covering the cost of performing such distribution (such as the cost of media, shipping, and handling) upon email request to email@example.com. This offer is valid for three (3) years from the date on which you purchased the product. This device meets the EMC requirements for home appliances (Class B) and is intended for home usage. This device can be used in all regions. Read the owner's manual (CD) carefully and keep it at hand. Please note that the label attached to the product provides information for technical support. MODEL SERIAL ENERGY STAR® is a set of power-saving guidelines issued by the U.S.Environmental Protection Agency (EPA). As an ENERGY STAR® Partner LGE U. S. A., Inc. has determined that this product meets the ENERGY STAR® guidelines for energy efficiency. Refer to ENERGYSTAR.gov for more information on the ENERGY STAR® program.