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| No.9211094
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Information Name: | Professional maintenance of the projector |
Published: | 2013-03-18 |
Validity: | 30 |
Specifications: | |
Quantity: | 886.00 |
Price Description: | |
Detailed Product Description: | Projector professional maintenance of electronic products, machinery, LCD or DMD, electronic circuit technology, in use from the following aspects to be noted (LCD projector, for example): 1. Mechanical guard against the strong collision , squeeze and shake. Because strong earthquakes can cause the displacement of the liquid crystal sheet, show the impact of a three LCD converging, RGB color does not overlap phenomenon, the lens in the optical system, the mirror will produce deformed or damaged, affect the effect of the image projection, and the zoom lens to make the track under the impact of damage caused by the lens stuck, even the lens rupture unusable. 2 optical system pay attention to environmental dust and ventilation and heat dissipation. We are currently using polysilicon LCD panels generally only 1.3 inches, and some even only 0.9 inches, reached 1024X768 or 800X600 resolution means that each pixel is only 0.02mm, the dust particles enough to it blocked. Generally have a dedicated fan projector LCD panels fully heat them tens of liters per minute of air flow air cooling, high-speed airflow through there tiny dust particles may be entrained dust filters, they rub against each other to produce static electricity adsorbed on the cooling system, which will projection projector repair the environment dustproof very important, must be non-smoking because of the soot particles are more easily absorbed in the optical system. Therefore often or regularly clean the dust filters at the air inlet. The current polysilicon LCD panels are more afraid of high temperature, the newer models are equipped with a temperature sensor near the LCD panel, projector maintenance within the temperature will rise rapidly when the air inlet and dust filters are clogged, the airflow and, The temperature sensor alarm and immediately cut off the light source circuit. So essential to maintain the smooth flow of air inlet, timely and clean the filter. Ceiling installation, to ensure that the ventilation of the upper space of the room. When the our lifting projector, often only pay attention to the surrounding environment, forgetting the problems of the hot air rises, working projector on the ceiling, its ambient temperature and below are very different, so this point can not be ignored. 3 light source part, most of the projector using a metal halide (Metal Halide), when lit, the light bulb the voltage across the 60-80V, the gas pressure inside the bulb is greater than 10kg/cm temperature thousands degrees, the filament in a semi-molten state. Turned non-vibration, moving the projector, to prevent the bulbs burst, can not disconnect the power immediately after you stop using, let the machine heat to complete automatic shutdown, the damage power off the machine cooling state is the most common projector one of the reason for return. In addition, reducing the number of switching machine useful lamp life. 4 circuit part of the non-hot plug cable, preferably at the same ground of the signal source and the projector power. This is because when the projector and the signal source (such as a PC) connected to a different power, there may be a high potential difference between twenty lines. The ignition phenomenon occurs when the user hot plug signal line or other circuit between the plug and socket, damage to the signal input circuit, thus causing serious consequences. The projector when in use, some users will require a larger distance between the signal source and the projector, such as the lifting of the projectors are generally from the source of the signal more than 15 meters, then the corresponding signal cables must be extended. Thus will cause the input projector maintenance signal attenuation projection screen fuzzy tail even jitter phenomenon occurs. This is not the projector fails, it will not damage the machine. The best way to solve this problem is to install a signal amplifier, source can ensure that the signal transmission over 20 meters and no problem. Above example to LCD projectors introduces the main points in the use of a projector, DLP projector with its similar, but the continuous work time than LCD captain, CRT projector repair maintenance relatively small, because basically do not move, Therefore, the failure rate is relatively low. But no matter what kind of projector malfunction, users be forbidden boot check, users can maintain their own parts in the machine, and the the projector high pressure devices may cause serious injury to persons. So, at the time of purchase must not only choose the right products find a good price, but also to choose the right business, to clarify maintenance services phone, a problem for professional advice, we will not have to worry about. Projector boot, shutdown and inspection machine projector maintenance, one of the most important issues in the use of the projector, is to maintain good heat dissipation. The projector has two power switches, a soft switch (POWER button), and the other is a hard switch (power switch SWITCH). Turn off the projector after the end of the projector use, you have to press the soft switch (POWER button), in fact, at this time the projector repair does not really end work, in its side of the cooling fan is still rotating, because the projector at work the heat generated is enormous, so the manufacturers designed to have three to five minutes of cooling process. If you turn off the projector, the internal heat can not be discharged, LCD panels or light bulb will burn out. Fan stops, and in order to shut down the hard-switching (SWITCH key). General continuous case, projector maintenance in continuous use four, five hours later, should be closed so that it rest. This extends the service life of the lamp and LCD panels. Avoid vibration projector show. Projector testing machine should pay attention to five points: 1, control models and performance indicators; examine the packaging and its Annex 2, check whether the appearance of the machine damage, check the focusing properties of the squares or lines of a test by the computer-generated, the focus adjustment to the optimum position, the image contrast changes from low to high and the horizontal and vertical lines of the observed grid focusing effect. 4, whether cast or dust (buy LCD projector with particular attention to) play an all-white image, and how to observe the color uniformity. In general, LCD projectors, color uniformity is difficult to achieve a higher standard. Good quality machine timing of color uniformity. Further, the liquid crystal projector dust is a problem, a small dust, such as falls on the liquid crystal panel or a lens can be enlarged very clear. Adjust the optical focus on the all-white image, from small to large, observed on the screen if the color spots appear on the LCD panels or lens becomes dusty, it is estimated that the dust control system of the machine in question. Purchase the use of the process of the dust, if the dust is coming from is not strong by professionals boot, a professional tool to blow off. 5, fill out the warranty card with suppliers and confirm warranty repairs Terms projector projector projector repair Common Questions Q: projector screen color display different colors in use FAQ? A: When the projector screen color and display color is not the same, there are likely to VGA cable is not connected or internal cable out of a color, another may be LCD board burned out. Q: projector invested in the characters on the screen, the display is not completely? A: There may be some resolution of the projector is not enough, the character graphics display incomplete, slow computer resolution will completely, if not, one has burned out that three liquid crystal film. Q: The projector is not full of dark yellow or color? A: If the projector appears dark yellow or color is not brilliant, probably the lamp life has been to re-change a light bulb (It is worth to note that in the change even after reset the lamp usage time, otherwise the new bulb is easily calculated according to the old time aging Q: projector connected laptop, no output image? A: laptop external display device, there are usually four display output control. (1) laptop LCD screen is bright, external display device lit Hongkou car: Helen Road, Metro Line 4.10 the 7th exports Maritime Building, next to the bus lines: 100,123,134,147,307,576,147,307,576,597,751,848,854,863,910,939,962 bus Siping Road Linping Road station |
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Copyright © GuangDong ICP No. 10089450, Shanghai HENGTAI Computer Technology Co., Ltd. All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
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You are the 17814 visitor
Copyright © GuangDong ICP No. 10089450, Shanghai HENGTAI Computer Technology Co., Ltd. All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility