Cleaning

•Be certain to disconnect the power plug from the power outlet before cleaning.

•Do not spray or otherwise expose the projector, lens, or screen to volatile substances such as insecticides. Do not leave rubber or vinyl products in contact with the projector for long periods. Doing so could cause them to undergo qualitative changes or the coatings may peel, etc.

Cleaning a Soiled Projector Main Unit

•Wipe with a lint-free, soft, dry cloth.

When very dirty, wipe with a cloth that has been moistened with a diluted neutral detergent, then finish with a dry cloth. If a chemically-treated cloth is going to be used, please follow any written warnings.

•Do not wipe with thinner, benzene, or other solvents. Doing so could cause them to undergo qualitative changes or the coatings may peel, etc.

•When removing the dust of the outflow and intake holes, use the brush attachment on a vacuum cleaner to clean out the dust. Avoid using the vacuum directly without attaching the adapter as well as the use of a nozzle adapter.

•Do not scratch or otherwise hit the projector body with your nails or other hard object, since this will cause scratches.

Dirty Lens

•Clean using the same method you would use to clean a camera lens: Use a commercial blower for camera use or cleaning paper for eye glasses. Be careful not to scratch the lens at this time.

Dust of the Intake and Outflow Holes

Dust that collects in the intake and outflow holes will obstruct the ventilation and cause the internal temperature to rise which could cause damage. Clean this area carefully. As a guideline, clean at least every 100 hours of usage.

•Switch off the power, check that the STANDBY indicator has changed to a steadily lit amber, then unplug the power cable.

•Clean out the holes from the outside using a vacuum cleaner. Use the brush adapter of the vacuum cleaner to do this. Avoid using the vacuum directly without attaching the adapter as well as the use of a nozzle adapter.

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Cleaning the Inside of the Projector

Cleaning of the inside of the projector is required about once a year. Failure to clean over a long period while dust has collected inside the projector could cause a fire or breakdown. Do not clean the inside of the projector by yourself. Please be sure to contact your dealer.

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PLUS Vision U4-237 user manual Cleaning a Soiled Projector Main Unit, Dirty Lens, Dust of the Intake and Outflow Holes
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U4-237 specifications

The PLUS Vision U4-237 is a state-of-the-art presentation tool designed for modern meeting environments. Its sleek design and advanced features make it a versatile solution for both professional and educational settings.

One of the standout characteristics of the U4-237 is its impressive resolution. With a Full HD display, the content is presented with incredible clarity and detail, ensuring that every presentation, video, and image is sharp and easy to see. This high resolution is particularly beneficial for detailed diagrams, graphs, and text-heavy slides, where clarity is essential for audience comprehension.

The U4-237 is equipped with advanced projection technology, including 3LCD technology, which enhances color accuracy and brightness. This feature ensures that vibrant colors are presented faithfully, making it ideal for a variety of content types, from colorful charts to intricate presentations.

Ease of connectivity is another key feature of the PLUS Vision U4-237. It offers multiple input options, including HDMI, VGA, and USB, allowing users to easily connect laptops, tablets, and other devices. Wireless connectivity options are also available, supporting seamless presentations without the hassle of tangled cables.

The U4-237 boasts a user-friendly interface, which simplifies navigation through menus and settings. This intuitive design allows users to quickly adjust settings like brightness and contrast, ensuring optimal performance in varying lighting conditions. The built-in speaker enhances sound delivery, negating the need for additional audio equipment during presentations.

Additionally, the PLUS Vision U4-237 is designed with energy efficiency in mind. It incorporates a long lamp life, reducing maintenance costs and downtime. This reliability makes it a perfect choice for regular use in classrooms or boardrooms.

Another notable feature is the comprehensive range of projection modes available, including eco mode, which conserves energy while still delivering quality images. The device also includes a remote control for convenient operation from a distance, making it easy to manage presentations smoothly.

In conclusion, the PLUS Vision U4-237 stands out for its high-definition display, advanced 3LCD technology, versatile connectivity options, user-friendly interface, and energy-efficient design. It is an excellent investment for anyone looking to elevate their presentation experience, whether in a professional or educational environment.
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