Sharp PN-U553, PN-U473 Troubleshooting, Power LED is flashing in red and green alternately

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Troubleshooting

The Power LED is flashing in red and green alternately.

•When the internal temperature of the monitor rises excessively, the brightness of the backlight decreases automatically in order to prevent high-temperature-related problems. When this occurs, the Power LED flashes red and green alternately.

•If the internal temperature rises further, the monitor automatically enters standby mode. (The Power LED continues flashing red and green alternately.)

•Remove the cause of the excessive temperature rise.

-If the monitor enters standby mode due to a rise in temperature, to return to normal display, turn the power switch off and then back on again. The monitor, however, will enter standby mode again if the cause of the temperature rise is not eliminated. (See page 7.)

-Check whether the monitor is placed at a location where a quick rise in temperature is likely. Internal temperature rises quickly if the vents on the monitor are blocked.

-Internal temperature rises quickly if dust accumulates inside the monitor or around the vents. Remove dust if possible. Ask SHARP dealer about removing internal dust.

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Contents PN-U553 PN-U473 PN-U423 European Union Information on Disposal for Users private householdsInformation on Disposal for Business Users Other Countries outside the EUBlue For Customers in U.KGREEN-AND-YELLOW BrownDear Sharp Customer Safety Precautions Tips and Safety Instructions For the monitor in landscape orientation For the monitor in portrait orientationContents Supplied ComponentsNFront view NRear view Remote control sensor See Input switch See Power switch SeePart Names LCD panelSignal transmitter Part Names NRemote control unitReturn button See Size button See Connecting Peripheral Equipment 11 EConnecting Peripheral Equipment Connecting the Power Cord 13 EBinding Cables PN-U553 Cables connected to the terminals on the rearRemote control operation range Preparing the Remote Control UnitInstalling the batteries 15 ETurning power on/off Turning Power On/OffTurning on the main power Status Status of the monitorNDate/time setting Turning Power On/Off NOperation mode17 E Basic Operation Wide Normal Basic Operation NSwitching the screen size19 E Dot by DotNMenu screen display Menu ItemsDisplaying the menu screen NExample of operationMenu Items 21 EMenu item details NSCREENMenu Items NPICTURE 23 E NSETUPMenu Items NAUDIO Menu Items NMONITOR NMULTI/PIP25 E Menu Items NOTHERSNEnlarge Menu Items NDual screen displayPIP NSCHEDULE 27 EInput NScreen display for adjustment Adjustments for PC screen displayNAutomatic adjustment Opening the adjustment pattern29 E ALL ResetAdjustment Lock OSD DisplayControlling the Monitor with a PC RS-232C Communication procedure PC connectionCommunication conditions NResponse code format 31 ENID numbers Wait ← OK 002 ← VOLM0010 OK 001 ←33 E NRepeater control commandControlling the Monitor with a PC RS-232C NRepeater control How to read the command table RS-232C command tablePower control/Input mode selection Controlling the Monitor with a PC RS-232CControlling the Monitor with a PC RS-232C Picture menu 35 EAudio menu Controlling the Monitor with a PC RS-232C Setup menu Monitor menuControlling the Monitor with a PC RS-232C MULTI/PIP menu Initialization/Functional Restriction Setting Function menu37 E Others menuTemperature Sensor Dsta Controlling the Monitor with a PC RS-232C Others39 E Settings to connect to a LANControlling the Monitor with a PC LAN To set on the monitorSet up process Controlling the Monitor with a PC LAN To set from a PCControlling the Monitor with a PC LAN 41 EControlling with a PC Basic operationScreen Picture SetupControlling the Monitor with a PC LAN PC operation Audio43 E Advanced operation Command-based control Troubleshooting 45 ETroubleshooting Power LED is flashing in red and green alternatelyNProduct Specifications Specifications47 E Specifications NDimensional Drawings 49 E Specifications NPower managementNDDC plug and play Specifications NCompatible signal timing PC NCompatible signal timing AV51 E Specifications NDVI-D output terminal pins NRS-232C output terminal pins53 E PN-U553U473U423 Me EN13G1
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PN-U423, PN-U473, PN-U553 specifications

The Sharp PN-U473 is a sophisticated large-format display ideal for a variety of commercial environments, offering both stunning visuals and robust features. This 47-inch LCD panel is designed with versatility in mind, making it suitable for digital signage, presentations, and information displays across various sectors.

One of the standout features of the PN-U473 is its ultra-thin bezel, which enhances immersion when used in multi-screen configurations. This design element minimizes distractions, allowing viewers to focus on the content being displayed. The Full HD resolution of 1920 x 1080 ensures that images and text are crisp and clear, providing superior visual performance that is crucial for conveying important information.

The PN-U473 is equipped with advanced display technologies, including a high brightness level of up to 500 cd/m². This makes it particularly effective in high-ambient light environments, where visibility is often a concern. The display utilizes LED backlighting, which not only enhances brightness and contrast but also contributes to energy efficiency, helping businesses reduce operational costs.

Connectivity options are extensive, featuring multiple inputs including HDMI, DisplayPort, and VGA, which provide flexibility for various multimedia sources. The built-in USB media player further enhances its functionality, allowing users to display files directly without the need for a separate computer.

Additionally, the PN-U473 supports advanced image processing technologies that ensure smooth video playback and excellent color accuracy. This capability is essential for applications where detail and clarity are paramount, such as retail or corporate environments.

Moreover, the display is designed for 24/7 operation, making it a reliable choice for continuous use scenarios where downtime can be costly. Its robust thermal management system helps maintain optimal performance under prolonged use.

In conclusion, the Sharp PN-U473 combines cutting-edge display technology with practical features tailored for commercial applications. Its impressive visual quality, versatile connectivity, and durability make it a valuable asset for businesses looking to enhance communication and engagement through impactful visual presentations. Whether in retail, corporate settings, or public spaces, this display stands out as a reliable solution for effective messaging and information dissemination.
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