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Common sense of use, maintenance and maintenance of projector

With the continuous promotion of the process of educational informatization, all kinds of schools at all levels have invested in the construction of multimedia classrooms. The LCD projector is one of the most important equipment in the multimedia classroom, and it is very valuable, so some users require a large distance between the signal source and the projector when it is used. For example, the hoisting projector is a kind of precision electronic product. When the projector is in use, some users require a large distance between the signal source and the projector. If the hoisting projector is generally more than 15 meters away from the signal source, the corresponding signal cable must be extended. As a result, the signal of the input projector will attenuate, and the projected picture will be blurred and even dithered. This is not a failure of the projector, nor will it damage the machine. The best way to solve this problem is to install a signal amplifier after the signal source, which can ensure that the signal transmission is more than 20 meters without asking that the camera is generally more than 15 meters away from the signal source, then the corresponding signal cable must be extended. As a result, the signal of the input projector will attenuate, and the projected picture will be blurred and even dithered. This is not a failure of the projector, nor will it damage the machine. The best way to solve this problem is to install a signal amplifier after the signal source, which can ensure that the signal transmission is more than 20 meters without problem.

The work that schools generally pay close attention to. The author thinks that the maintenance of LCD projector should be operated in strict accordance with the operating instructions, and should pay attention to the following aspects of common sense:

1. The projector bulb uses a mercury lamp, which is made of glass and its interior is in a state of high pressure. The mercury lamp may burst during use or when it is vibrated. When the light bulb bursts, its glass fragments will be scattered in the light box, and some gas containing mercury will leak out. As far as possible, people should not inhale the gas they emit, and do not let the gas into their eyes and mouth.

two。 If the light bulb has been used for too long or has exceeded its service life, it is more likely to burst. Therefore, when the projector prompts or shows that the projector needs to be in use, some users require a large distance between the signal source and the projector. For example, the hoisting projector is generally more than 15 meters away from the signal source, and the corresponding signal cable must be extended. As a result, the signal of the input projector will attenuate, and the projected picture will be blurred and even dithered. This is not a failure of the projector, nor will it damage the machine. The best way to solve this problem is to install a signal amplifier after the signal source, which can ensure that the signal transmission is more than 20 meters without problem.

After changing the new light bulb, replace it in time. The replacement of the light bulb should be carried out by professionals, generally not by themselves.

3. Pay attention to the location of the discarded light bulb and don't break it.

4. Do not use the projector when the light box cover is removed.

5. If the projector is used for too long (more than 5-6 hours) at a time, the temperature of the bulb is too high and the Lamp (bulb) indicator of the projector will turn red. In this case, there is no need to replace a new bulb. As long as the projector is turned off, it is a precision electronic product. When the projector is in use, some users require a large distance between the signal source and the projector. If the hoisting projector is generally more than 15 meters away from the signal source, the corresponding signal cable must be extended. As a result, the signal of the input projector will attenuate, and the projected picture will be blurred and even dithered. This is not a failure of the projector, nor will it damage the machine. The best way to solve this problem is to install a signal amplifier behind the signal source, which can ensure that the signal is transmitted more than 20 meters without asking the camera, and then turn it on after it cools (usually takes about 20 minutes).

6. After replacing the new light bulb, reset the lamp timer, otherwise, the information prompt function of the projector will not work.

7. When the projector is used for a period of time (about every 100 hours), the air filter should be cleaned in a timely manner. If the dirt cannot be removed or the air filter is damaged, a new air filter needs to be replaced. Must not remove the air filter projector in use, some users require a large distance between the signal source and the projector, such as the hoisting projector is generally more than 15 meters away from the signal source, then the corresponding signal cable must be extended. As a result, the signal of the input projector will attenuate, and the projected picture will be blurred and even dithered. This is not a failure of the projector, nor will it damage the machine. The best way to solve this problem is to install a signal amplifier after the signal source, which can ensure that the signal transmission is more than 20 meters without problem.

Use the projector in the state of the projector.

8. The lens of the projector should be cleaned with lens paper and should not be wiped with hand touch or other things.

9. The shell of the projector also needs to be cleaned after it has been used for a long time (about two years). Wipe it gently with a soft cloth. If the stain or dust is not easy to wipe off, you can wipe it with a cloth stained with water or neutral detergent. Then dry the projector with a dry and soft cloth. It is a precision electronic product. When the projector is in use, some users require a large distance between the signal source and the projector. If the hoisting projector is generally more than 15 meters away from the signal source, the corresponding signal cable must be extended. As a result, the signal of the input projector will attenuate, and the projected picture will be blurred and even dithered. This is not a failure of the projector, nor will it damage the machine. The best way to solve this problem is to install a signal amplifier after the signal source, which can ensure that the signal can transmit more than 20 meters without asking. Do not use other detergents or chemicals (such as benzene, etc.) or spray cleaners.

10. The projector is required to be used regularly and must not be moved in the course of use.

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