NEC MultiSync UN552 User Manual

English−32
Power ON and OFF Modes
Press the button on the Control Panel or POWER ON button on the Remote Control to turn on the monitor.
The monitor’s power LED indicates the current status of the monitor. Please refer to the following table for information about the
LED indicator.
LED indicator status and
lighting pattern
Condition Recovery
Glowing blue Normal 1. Turn on the monitor by the remote
control or the monitor button.
2. Send an AV signal input to the
monitor.
Blinking green*
1
Under any of the conditions below, no input signal has
been detected by the monitor during the period of time you
set:
• The monitor is using an Option Board.
• [INPUT DETECT] is set to a setting except for [NONE].
• [USB POWER] is set to [ON].
• DisplayPort in the [TERMINAL SETTINGS] is set to
[MST].
Glowing amber No AV signal input has been detected by the monitor during
the period of time you set. (with network signal input)
Blinking amber No AV signal input has been detected by the monitor during
the period of time you set. (no network signal input)
Glowing red Turn off the monitor by the remote control or the monitor
button.
Turn on the monitor by the remote
control or the monitor button.
*
1
: Time setting for [AUTO POWER SAVE] is available at [POWER SAVE] (See page 116).
NOTE:  • The blue LED indicator that the monitor is powered on and functioning normally can be turned off in the monitor’s
OSD menu options. See page 120.
• If the indicator is blinking red in a combination of long and short durations, a certain failure might have occurred,
please contact your supplier.
The Main Power switch must be in the ON position in order to power up the monitor using the POWER ON button on the remote
control or the button on the Control Panel.
Main Power Switch
OFF
ON
Button

NEC MultiSync UN552 Specifications

General

Energy efficiency scale	A to G

Summary

Registration Information

Cable Information

Summary of cable usage and interference precautions for radio and television reception.

FCC Information

Details on FCC compliance and warnings for device operation in commercial environments.

Supplier’s Declaration of Conformity

Statement of compliance with FCC rules, subject to specific operating conditions.

Important Information

Safety Warnings and Cautions

Critical warnings and cautions regarding product safety, electrical shock, and proper usage.

Safety Precautions, Maintenance & Recommended Use

Safety Precautions and Maintenance

Guidelines to prevent hazards, ensure proper setup, and maintain the monitor's condition.

Recommended Use

Advice for optimal ergonomic benefits and comfortable viewing experiences.

Cleaning the LCD Panel

Instructions for safely cleaning the monitor's screen surface without damage.

Features

Optimized for Video Wall

Features enabling video wall configurations, including narrow bezels and daisy chaining.

Seamless and Accurate Color Reproduction

Details on SpectraView Engine for advanced color control and emulation.

Installation

Setup Overview

Initial steps for monitor setup, including location, remote control battery installation, and connections.

Mounting

Procedures and safety guidelines for securely mounting the monitor on walls or ceilings.

Ventilation Requirements

Guidelines for ensuring adequate airflow and heat dissipation around the monitor.

Attaching Mounting Accessories

Instructions for connecting VESA mounting accessories, including wall mount adapters.

Parts Name and Functions

Control Panel

Description of buttons on the monitor's control panel and their specific functions.

Terminal Panel

Identification and description of all monitor input and output connectors.

Wireless Remote Control (Optional)

Explanation of buttons and functions of the optional remote control.

Connections

Connecting External Equipment

General guidelines for connecting external devices to the monitor.

External Video Connections

Details on connecting various video sources like HDMI, DisplayPort, and VGA.

Connecting to a Personal Computer

Typical factory preset signal timings for PC connections via different interfaces.

Media Player

Information on using the internal media player with memory cards and USB devices.

Basic Operation

Power ON and OFF Modes

Explanation of monitor power states indicated by the LED and related functions.

OSD (On-Screen-Display) Controls

Guide to navigating and using the monitor's on-screen display menu for various settings.

Using the Media Player

Instructions for playing files, configuring slideshows, and auto-play with the media player.

Advanced Operation

Creating a Power Schedule

How to set automatic power on/off schedules and adjust settings based on time.

Advanced Color Adjustment

Detailed guide to color settings, including SpectraView Engine, picture modes, and calibration.

Multi-Picture Mode

Configuration for Picture-In-Picture (PIP) and Picture-By-Picture (PBP) modes.

Setting Security and Locking the Monitor Controls

Procedures for enabling password security, locking remote, and control panel buttons.

Multi-Monitor Setup

Connecting Multiple Monitors

Guidelines for connecting multiple monitors for video walls and daisy-chaining.

Video Out Connection

Settings for outputting video signals to other monitors, including HDCP compatibility.

Setting the Remote Control ID Function

How to use a single remote to control multiple monitors individually via Remote Control ID.

External Control

Connecting Interfaces

Information on RS-232C and LAN interfaces for connecting external control devices.

Network Settings

Configuration of network settings via HTTP browser for remote control and monitoring.

Network Setting by Using an HTTP Browser

Step-by-step guide to accessing and configuring monitor settings via web browser.

Troubleshooting

Screen Image and Video Signal Issues

Solutions for common problems related to image display, video signals, and connectivity.

Hardware Issues

Troubleshooting steps for physical or operational problems like unresponsive buttons or no sound.

Image Persistence

Explanation and mitigation for image persistence phenomena on LCD panels.

Specifications

UN552 Product Specifications

Detailed technical specifications for the UN552 model, including LCD, input, and power.

UN552V Product Specifications

Detailed technical specifications for the UN552V model, including LCD, input, and power.

External Resources

NEC Display Solutions Regional Websites

Links to official NEC Display Solutions websites for support and product information.

Additional Documentation

References to PDF manuals, SDKs, and setup guides for external control and Raspberry Pi.

Software

Information on available software for color calibration, profiling, and remote management.

OSD Controls List

INPUT

List of input source selection options and their descriptions.

PICTURE

Details on picture adjustment settings, modes, and color controls.

AUDIO

Options for adjusting audio settings like volume, balance, input source, and multi-picture.

SCHEDULE

Configuration of automatic power schedules based on time, date, and input.

MULTI-INPUT

Settings for multi-picture modes (PIP/PBP), text tickers, and input detection.

MULTI-DISPLAY

Configuration for multi-monitor setups, including auto ID/IP assignment and tile matrix.

DISPLAY PROTECTION

Settings for protecting the monitor, such as power save, screen savers, and fan control.

CONTROL

Network, security, remote control, and button lock settings.

SYSTEM

Monitor information, firmware version, and factory reset options.

COMPUTE MODULE

Settings related to the optional Raspberry Pi Compute Module and its functions.

Manufacturer’s Recycling and Energy Information

Disposing of Your Old NEC Product

Guidance on environmentally responsible disposal of the product and recycling facilities.

Energy Saving

Information on the monitor's advanced energy-saving features and modes.