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LG 22MD4KA Owner's Manual

Ultrafine 4k monitor
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LG UltraFine 4K
(For Mac)
Please read this manual carefully before operating your set and retain it for future


Table of Contents

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  Summary of Contents for LG 22MD4KA

  • Page 1 OWNER’S MANUAL LG UltraFine 4K Monitor (For Mac) Please read this manual carefully before operating your set and retain it for future reference. 22MD4KA
  • Page 2: Table Of Contents

    TABLE OF CONTENTS SAFETY PRECAUTIONS ----------------3 - On Safety --------------------------------------------3 Do not Open the Display: To Avoid Personal Injury: To Prevent Fire or Hazards: - On Installation ---------------------------------------4 - Precautions to the AC Adapter and Power ---------5 - On Cleaning ------------------------------------------5 - On Repacking ----------------------------------------5 LICENSE ---------------------------------6 ASSEMBLING AND PREPARING ------7...
  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS This unit has been engineered and manufactured to ensure your personal safety, however improper use may result in potential electrical shock or fire hazards. In order to allow the proper operation of all safeguards incorporated in this display, observe the following basic rules for its installation, use, and servicing.
  • Page 4: On Installation

    On Installation Do not allow anything to rest upon or roll over the power cord, and do not place the display where the power cord is subject to damage. Do not use this display near water such as near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool.
  • Page 5: Precautions To The Ac Adapter And Power

    If loosely connected, the poor connection may cause a fire or electric shock. • Be sure to use power cords and AC adapters provided or approved by LG Electronics, Inc. The use of non-approved products may cause a fire or electric shock.
  • Page 6: License

    LICENSE Each model has different licenses. Visit for more information on the license. Mac and the Mac logo are trademarks of Apple Inc., registered in the U.S. and other countries.
  • Page 7: Assembling And Preparing

    It is recommend that use the supplied components. • If you use generic cables not certified by LG, the screen may not display or there may be image noises. NOTE Without prior notice, all product information and specifications contained in this manual are subject to change to improve the •...
  • Page 8: Product Description

    Product Description Front Ambient light sensor Back Power connector Kensington lock hole Stand detach button NOTE The ambient light sensor is for auto brightness control of display and can be controlled by Mac OS. (Refer Page 24) •...
  • Page 9: Input Connector

    Input Connector USB expansion port Host(Mac) connection port...
  • Page 10: Id Label / Sub Id Label

    ID Label / Sub ID Label You can view the monitor's ID Label and Sub ID Label. Sub ID Label Stand ID Label * Detaching the Stand (Page 17) NOTE ID Label: the monitor's standard ID label that states model name, production date, country of production, specifications, etc. •...
  • Page 11: Moving And Lifting The Monitor

    Moving and Lifting the Monitor 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. • Place the monitor in the original box or packing material before attempting to move it. •...
  • Page 12: Installing On A Table

    Installing on a Table Lift the monitor and place it on the table in an upright position. Place the monitor at least 100 mm away from the wall to ensure sufficient ventilation. 100 mm 100 mm 100 mm 100 mm Connect the power cord to the monitor and then plug the power cord into the wall outlet.
  • Page 13: Adjusting The Stand Height

    Cautions When Connecting Power Cord 100-240 V ~ Make sure to use the power cord that is provided in the product package and connect it to a grounded power outlet. • If you need another power cord, please contact your local dealer or the nearest retail store. •...
  • Page 14: Adjusting The Angle

    WARNING When adjusting the screen height, do not place your hand on the stand body to avoid injury to your fingers. • Be careful not to touch or press the screen area when adjusting the angle of the monitor. • NOTE The left or right side of the monitor head can be slightly rotated up or down.
  • Page 15: Adjusting The Angle

    Adjusting the Angle Place the monitor in an upright position, mounted on the stand base. Adjust the angle of the screen. The angle of the screen can be adjusted forwards or backwards for a comfortable viewing experience. Rear Front WARNING To avoid injury to the fingers when adjusting the screen, do not hold the lower part of the monitor’s frame as illustrated below.
  • Page 16: Using The Kensington Lock

    Using the Kensington Lock The connector for the Kensington security system is located at the bottom of the monitor. For more information on installation and usage, refer to the Kensington lock owner’s manual or visit the website at . Connect the monitor to a table using the Kensington security system cable.
  • Page 17: Detaching The Stand

    Detaching the Stand Place the monitor’s screen face down. To protect the screen from scratches, cover the surface with a soft cloth. Push the Detach button on the back of the monitor to the left. Lift up the stand, slightly rotating it. Pull the stand away from the monitor in its rotated position.
  • Page 18 Check whether the hooks on the stand are separated from the slots of the main unit. Stand hooks Main unit slots Remove the stand once the hooks on the stand have been released from the slots of the main unit. CAUTION Be careful not to drop the stand while detaching it.
  • Page 19: Attaching The Vesa Design Cover

    Attaching the VESA design cover Place the monitor’s screen face down. To protect the screen from scratches, cover the surface with a soft cloth. VESA design cover hooks Main unit slots Place the VESA design cover on the monitor in a slightly slanted position so its hooks can be inserted to the slots of the main unit.
  • Page 20: Attaching The Vesa Design Cover

    Push down on the VESA design cover. CAUTION Check whether the detach button has been pushed to the right after attaching the VESA design cover. If the button has not • been pushed to the right, push it into position with your hands.
  • Page 21: Installing The Wall Mount Bracket

    Installing the Wall Mount Bracket Place the monitor’s screen face down. To protect the screen from scratches, cover the surface with a soft cloth. Use four screws to attach the wall mount bracket. (Standard screws: M4 x L10)
  • Page 22 NOTE • Install the monitor at least 100 mm away from the wall on each side of the monitor to ensure sufficient ventilation. • The wall mount bracket and the wall mount bracket screws are not included. CAUTION Be sure to attach the VESA design cover before attaching the wall mount bracket. •...
  • Page 23: Making Connections

    MAKING CONNECTIONS Make sure to use the supplied cable. Otherwise, this may cause the device to malfunction. Some of the cables are not provided. CAUTION • Do not press the screen for a prolonged time. This may cause image distortion. •...
  • Page 24: Troubleshooting

    TROUBLESHOOTING Nothing is displayed on the screen. Is your monitor connected to your Connect your monitor to your Mac. The monitor will turn on automatically if the PC • Mac? is operating normally. Is the monitor's power cord plugged • Check if the power cord is correctly plugged into the power outlet.
  • Page 25: Product Specification

    PRODUCT SPECIFICATION The product specifications below may be changed without prior notice due to upgrade of product functions. LCD Screen Type TFT (Thin Film Transistor) LCD (Liquid Crystal Display) Screen Color Depth USB-C 8-bit color is supported. Pixel Pitch 0.11595 mm x 0.11595 mm Resolution Max Resolution 4096 ×...
  • Page 26: Signal Timing

    Signal Timing Horizontal Frequency Vertical Frequency Resolution Polarity (H/V) Remarks (kHz) (Hz) 1920 x 1080 66.66 2560 x 1440 88.86 3360 x 1890 116.64 3840 x 2160 65.73 3840 x 2160 133.32 4096 x 2304 70.11 4096 x 2304 113.13 4096 x 2304 142.2 Main Recommended Timing...
  • Page 27 LG Electronics will also provide open source code to you on Make sure to read the Safety Precautions before using the CD-ROM for a charge covering the cost of performing such product.