Daily maintenance of horizontal projector

Horizontal projector is a precision electronic products, which combines mechanical, LCD or DMD, electronic circuit technology, it should be noted from the following several aspects in the use of (liquid crystal with a horizontal projector for example):

Mechanical hand

To prevent a strong impact, extrusion and vibration. Because the quake can cause displacement liquid crystal films, effects of convergence show three LCD, RGB color is not coincidence, and the optical system of lenses, mirrors will produce deformation or damage, affect the image of the projection effect, and will zoom track damage on impact, cause lens death, even can not use lens rupture.

Optical system

Pay attention to dust and ventilation cooling environment. Polysilicon LCD board we currently use only 1.3 inches, and some even only 0.9 inches, and resolution has reached 1024X768 or 800X600, that is to say each pixel only 0.02mm, dust particles enough it barrier. Because the horizontal projector LCD board sufficient cooling generally have specialized fan per minute to several liters of air flow of the air cooling, high-speed airflow through the filter and may be entrained particles of dust, they mutual friction electrostatic adsorption in the cooling system, it will influence the projection screen. Therefore, in the horizontal projector using environment is very important in the dust, smoking must be prohibited, because of dust particles are more easily adsorbed on the optical system. So to frequent or regular cleaning of the air inlet strainer.

Polysilicon LCD plate at present are more afraid of high temperature, newer models are equipped with temperature sensors in LCD plate, when the air inlet and the filter is clogged, air flow is not smooth, rapid temperature increase will be horizontal projector, when the temperature sensor will alarm and cut off the light source circuit immediately. So, keep the air inlet flow, timely cleaning filter net is very necessary.

Ceiling mounted horizontal projector, to ensure that the upper room space ventilation cooling. When we're lifting horizontal projector, often only pay attention to the surrounding environment, and forget about the problem of rising hot air, horizontal projector work on the ceiling, the ambient temperature are very different, and so can not be overlooked this point below.

The light source part

At present, most horizontal projector using metal halogen lamp (Metal Halide), in the light of state, the two ends of the bulb voltage is about 60-80V, the gas pressure in the bulb is greater than 10kg/cm, the temperature is thousands of degrees, the filament in a molten state. Therefore, vibration is strictly prohibited in the boot state, moving the horizontal projector, prevent the bulb explosion, can not stop using immediately disconnect the power supply, signal source and horizontal projector best simultaneous ground. This is because when the horizontal projector and signal source (such as PC) is connected with different power, there may be a high potential difference between the two zero line. When the plug signal line charged or other circuit, will spark phenomenon occurred in between the plug and the socket, the damage signal input circuit, thereby causing serious consequences.

Horizontal projector when in use, some users require a greater distance between the signal source and the horizontal projector, such as horizontal projector hoisting generally away from the source of more than 15 meters, then the corresponding signal cable must be extended. This will cause the input signal attenuates horizontal projector, projection screen will smear or jitter phenomenon. This is not a horizontal projector fails, will not damage the machine. The best way to solve this problem is to add a signal amplifier in signal source, can ensure that the signal transmission of more than 20 meters and no problem.

The above LCD horizontal projector as an example to introduce some horizontal projector use points, DLP horizontal projector similar, but the continuous work time than the LCD captain, and maintenance of CRT horizontal projector is relatively small, because the basic does not move, so the failure rate is relatively low. But no matter what kind of horizontal projector fails, users are not allowed to start checking, no user can maintain the parts of the machine, and the high-voltage device horizontal projector has the potential to cause serious harm to human body. So, at the time of purchase should not only choose the products find good price, more to choose the right business, understand the repair service telephone, a question to the professional advice, it will not have any menace from the "rear".

Horizontal projector note

1, try to use the original projector cables, wire

2, the projector used to keep away from water or damp place

3, pay attention to dust, may take the dust control measures in consulting professionals

4, the projector to be away from the heat source.

5, pay attention to the nominal value of the voltage of the power supply, the machine ground wire and the power supply polarity

6, the user not to repair and open the body, internal cable replacement parts as far as possible the use of the original accessories

7, the projector when not in use, the power must be cut off

8, the projector is used, such as abnormal, unplug the power

9, pay attention to use, first make the projector cooling

Mobile 10, the machine should pay attention, light-light, transport packaging, earthquake