The single-chip DLP projector is an indispensable key device for the digital cinema mobile projection and playback system to restore the image signal into an image and project it onto the screen.

The single-chip DLP projector is composed of a power circuit control system, an optical engine system, a fan and a ventilation and heat dissipation system, as well as a chassis that is easy to operate and has a beautiful process design. Its optical engine system is the core of the projector, which is composed of high-efficiency cold light source high-pressure mercury lamp UHP, UV-IR filter, color wheel, light integrating rod, TIR total reflection prism, electron microscope DMD module, projection lens, etc. . The optical engine is the most sophisticated and complex, and is fully enclosed and dustproof. There are two types of mechanical structure in the whole machine: "U" shape and "L" shape, which is very different from the linear structure of the optical engine of the film projector.

Rural film screenings require long-term activities in various geographical, natural, and climatically different villages. Most of the time, they are screened in the open air, often crowded and dusty. And like a film projector, the projector's lighting is like a moth lamp in the field, which will attract flying insects. If the cleaning equipment is not wiped in time after the screening or before the next screening, these dust and flying insect residues will adhere to the inner surface of the machine, the heat dissipation inlet and outlet slots and the fan runner blades, which will accumulate for a long time. The temperature of the machine will rise, and the taboo of the projector is that the machine temperature is too high. Especially under the conditions of high temperature and high humidity in the southern rainy season in the south, if these accumulated moist dust and residual dirt of flying insects are not cleaned in time, it will not only obstruct the intake air flow, but also affect the rotation of the fan and directly reduce the cooling effect. So that the temperature of the machine rises, so that the temperature warning indicator flashes, and even automatically shuts down and powers off eventually, resulting in a shutdown accident.

Even under the superior natural environmental conditions, in addition to conventional cleaning, the projector will accumulate too much dust on the optical engine, especially the ventilation slots and fan runners during the cumulative continuous use of the year, resulting in temperature Too high and malfunction. Excessive machine temperature is the most fatal damage to the projector, which will cause the brightness to drop, the image is blurred, the color is not correct, etc. Therefore, the cleaning of the projector must be carried out on time in strict accordance with the requirements of the relevant operating instructions.

Once the machine is cleaned and cleaned once a year, it can be represented by an authorized after-sales service center. However, if the counties send nearly ten projectors and more than twenty projectors to the service center for cleaning and cleaning every year, the cost is quite considerable. For the vast majority of county movies that are engaged in public welfare film screenings The company is a heavy burden. Moreover, the transportation route will delay the completion of the screening task. Indeed, cleaning the projector requires a certain theoretical basis, professional technical knowledge and practical experience accumulation. Therefore, it is an excellent way to require the projection staff to participate in technical training, especially the original mechanical repair technicians of the county film company, while mastering the maintenance skills of the original film projection equipment, continue to learn the theoretical knowledge of digital film projection technology and understand the projector The basic structure of the equipment, etc., master the function and working principle of each system structure. When conditions permit, please come in and go out for training to continuously improve the maintenance skills of the projector.

1. Be sure to avoid the rainy season and thunderstorms every year when cleaning the inside of the projector.

2. Before cleaning and cleaning, you must confirm that the bulb is extinguished and has cooled down. Then turn off the main power and pull out the power plug from the power connector.

3. After opening the cover of the machine, conditionally use a vacuum cleaner to suck out the deposited dust. You can also use the air bag to blow off the dust, and at the same time use a soft brush to gently remove the accumulated dust.

4. Wear white gloves or medicinal rubber gloves to prevent fingerprints from touching the surface of the optical device.

5. It is absolutely not allowed to wipe and clean the optical devices with wet wipes and cloths with fluff or dust.

Sixth, the projector's optical components have high structural accuracy, and the placement distance is precise.

7. Don't use volatile alcohol to wipe the optical device. Practice has proved that alcohol can not cure the symptoms, and the ability to remove dust is limited. Because the dust that has accumulated on the optical device after a certain temperature and time accumulation can not be dissolved and removed by alcohol. It is recommended to use a cleaning agent extracted from natural gums, which is not corrosive to the surface of optical devices, and can effectively remove stubborn stains without leaving traces.

8. To clean up the dust and dirt layer accumulated on the blades of the fan runner, you can drip the neutral detergent on a soft dry cloth, wring the detergent in the cloth and gently wipe it, and finally wipe it with a clean cloth dry.

9. If you encounter broken pieces of glass products such as projection lamps or reflectors, you must clean them very carefully and patiently, and pay attention to prevent your fingers from being scratched.

10. After cleaning and cleaning, turn on the machine to check whether the operation menus are working properly. Whether the image is clear, and the brightness and color restoration are normal.

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Henan Toda Technology Co., Ltd. , https://www.todafurniture.com