Troubleshooting

If you are experiencing any problem with your display, before calling for service, please review the following troubleshooting tips.

There is no picture or sound.

Is the power cord disconnected? (See page 13.)

Is the main power switch off? (See page 16.)

Is the monitor in standby mode (the power LED illuminating in orange)? (See page 16.)

Make sure correct input mode is selected. (See page 18.)

If any external equipment is connected, make sure the equipment is operating (playing back).

Remote control does not work.

Are the batteries inserted with polarity (+,-) aligned? (See page 15.)

Are the batteries exhausted?

Point the remote control unit toward the monitor’s remote control sensor. (See page 15.)

Is the menu display hidden or is operation disabled? (See page 29.)

Sound from left and right speakers is reversed. Sound is heard from only one side.

Are audio cables connected properly?

Check the setting of BALANCE for AUDIO menu. (See page 23.)

There is a picture but no sound.

Is the sound muted?

Make sure the volume is not set to minimum.

Are audio cables connected properly?

Is the setting of AUDIO SELECT on the SETUP menu correct? (See page 23.)

Unstable video.

The signal may be incompatible.

Try the automatic screen adjustment when the D-SUB is used.

The video from the HDMI input terminal does not appear properly.

Is the HDMI cable HDMI standard compliant? The monitor will not work with cables that are not standard compliant.

Is the input signal compatible with this monitor? (See page

51.)

The video from the DVI-D input terminal does not appear properly.

Is the input signal compatible with this monitor? (See page

51.)

Turn off the power to the connected equipment and then turn the power on again.

If the monitors are connected in a daisy chain, turn off the power to all the monitors connected in a daisy chain and then turn the power on again.

The video from D-Sub input terminal does not appear properly.

Is the input signal compatible with this monitor? (See page

51.)

The video from the DisplayPort does not appear properly.

Is the input signal compatible with this monitor? (See page

51.)

The video from component input terminals does not appear properly.

Is the video cable (Y/Cb/Cr) connected correctly?

Is the input mode set to COMPONENT?

The video will not appear correctly if the input mode is set to VIDEO.

The video from video input terminal does not appear properly.

Is the input mode set to VIDEO?

The video will not appear correctly if the input mode is set to COMPONENT.

Control buttons do not work.

There is no picture.

Load noises from outside may be interfering with normal operation. Turn off the power and turn it on after waiting at least 5 seconds, and then check the operation.

The monitor makes a cracking sound.

You may occasionally hear a cracking sound from the monitor. This happens when the cabinet slightly expands and contracts according to change in temperature. This does not affect the monitor’s performance.

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Sharp PN-U473, PN-U553, PN-U423 operation manual Troubleshooting, 45 E

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.