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This document is an owner's manual for an LG Digital Signage (Monitor Signage) device, model 55EH5C. It provides comprehensive information on the product's safe installation, operation, maintenance, and troubleshooting.
The primary function of this device is to display digital content as a monitor signage. It is designed for indoor use and is capable of displaying videos for extended periods, though recommendations are provided to prevent image sticking.
The manual emphasizes safety precautions during installation. It warns against placing heavy objects on the product, leaving power or signal cables unattended, and installing it in places with high heat, dust, moisture, or poor ventilation. Specific instructions are given for connecting the AC adapter and electrical power, stressing the importance of using approved power cords and adapters, and ensuring proper grounding. Users are advised to connect the power cord to the product before plugging it into a wall outlet to prevent electric shock. The manual also highlights that the product warranty does not cover damage from using counterfeit components or from electrostatic discharge during installation, recommending appropriate anti-static gear.
Optional accessories, such as OPS kits, screws, connecting cables, power cords, and various mounting kits (fixed ceiling, stand, wall, rotational ceiling, cylinder stand), are mentioned, with a note that they may vary by model and should be purchased separately if needed. Users are advised to connect cables to the OPS kit or Media Player before attaching them.
The device supports various input modes, including HDMI, DVI-D, DisplayPort, and OPS. The remote control allows users to power the monitor on/off, swap images on dual screens, mirror images, select input modes, adjust volume, change aspect ratio, auto-adjust picture position, mute sound, and adjust brightness. It also includes buttons for navigating menus, confirming selections, going back, and exiting OSD tasks. Special features like "SimpLink" for controlling multimedia devices and "TILE" mode are available. The "Picture ID ON/OFF" function enables control of specific monitors in a multi-display setup.
The manual describes the IR Receiver/Power Indicator, which shows the power status (on, off, or flashing when the Clear Panel Noise feature is operating).
Cleaning instructions advise spraying water onto a soft cloth 2 to 4 times and wiping the front frame in one direction. Users are warned against using high-voltage products near the monitor, as this can cause malfunction. For cleaning the product itself, users should unplug the power cord and gently scrub with a soft cloth, avoiding wet cloths, water sprays, or chemical substances like benzene, paint thinners, or alcohol, which can cause electric shock or deformation.
To prevent image sticking, which can occur when a fixed image is displayed for an extended period, it is recommended to display videos for 12 hours or less per day. The manual also mentions "OFF-RS" and "JB" features for removing image sticking through TFT degradation compensation and OLED degradation compensation, respectively, which run after specific hours of use. Users are cautioned not to turn on the power while the Clear Panel Noise feature (OFF-RS) is operating, as this may cause malfunction.
The manual also provides advice for protecting vision, such as taking regular breaks and maintaining a proper distance from the product. It emphasizes keeping the product clean and avoiding strong pressure or sharp objects on the panel.
A dedicated section addresses common issues. For "No image displayed," it suggests checking the power cord, signal cable, and input settings. If an "Invalid Format" message appears, users should adjust the PC's frequency range. "Unknown Product" messages might indicate a missing driver. Abnormal screen images, such as incorrect position or unstable colors, require checking graphics card resolution, frequency, and signal cable connections. The manual also addresses audio issues, advising users to check audio cable connections and sound settings. It notes that several pixels (red, green, white, or black) may appear on the screen due to OLED panel characteristics, which is not a malfunction. If the power suddenly turns off, users should check timer settings, power control settings, and fan status.
The manual also provides information on downloading SuperSign Software and the manual from the LG Electronics website for further reference.
General| Panel Type | IPS |
|---|---|
| Aspect Ratio | 16:9 |
| Viewing Angle (H x V) | 178° x 178° |
| Response Time | 8 ms |
| Life Time (Typ.) | 50, 000 hours |
| Orientation | Landscape / Portrait |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Weight | 19.5 kg |
| VESA Mount | 400 x 400 mm |
| Operating System | WebOS |
| Display Size | 55 inches |
| Resolution | 1920 x 1080 |
| Input | HDMI, DVI-D, USB |
| Output | DP, Audio Out |
| External Control | RS-232C, RJ45 |
| Power Consumption | 130 W |
| Standby Power Consumption | <0.5 W |
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