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Apr 08,2021| LED Knowledge
First of all, to patrol inspection
General LED display inspection adopts the "monthly inspection system", while large LED display maintenance implements the "weekly inspection system". Specific maintenance content and response speed promise:
1. Maintenance of LED display screen body, including lamp tube, module, module, power supply and control card;
2. Maintenance of LED display control system, including controller, optical fiber conversion card, distributor and sending card;
3. Special playback operating software for LED display, including maintenance and upgrade of playback software;
4, regular (once a month) technical personnel on-site inspection, inspection and maintenance of the system;
5. Guarantee of major events: the company's technical personnel guide to ensure the smooth development of on-site activities.
6, for outdoor LED display, due to wind, rain, thunder, electricity and other natural factors caused damage, is not within the scope of warranty.Need owner to insure to insurance company, pay by insurance company indemnity.
7, during the maintenance service, the general failure within 8 hours to solve the maintenance problems, major accidents no more than 24 hours.The maintenance shall not exceed 24 hours for replacement of modules and other accessories.After the maintenance is completed, One Service will ensure that the large screen does not appear module level or above (such as module color bias, module black, one column is not bright, etc.), and it will play normally.
Second, the clean up
For the display screen with lower protection level, especially the outdoor screen, the dust in the atmosphere enters the equipment by the vent hole, which will accelerate the wear and even damage to the fan and other equipment.The dust will also fall on the surface of the internal control device of the display screen, reducing the thermal conductivity and insulation performance. In humid weather, the dust will absorb moisture in the air, leading to short circuit.In the long term, it can also lead to PCB board and electronic components of mildew, resulting in the decline of technical performance of equipment, failure.Therefore, the LED display cleaning work seems simple, in fact, is a very important part of the maintenance work.
LED display belongs to high power consumption equipment. After running for quite a period of time, due to multiple start-stop and operation, the wiring terminals of the power supply part will be loosened due to cold and hot, and the contact is not firm, forming virtual connection. When it is serious, it will heat up, and even ignite the plastic components next to it.Signal terminals will also become loose due to changes in ambient temperature and heat, and moisture erosion will lead to poor contact, which will lead to equipment failure. Therefore, the connector of LED display must be regularly tightened.When adjusting fasteners, the force should be uniform and appropriate to ensure firmness and effectiveness.
Four, LED display surface cleaning
Visual inspection and inspection of LED display under bright and black screen.Including: whether the display surface is polluted, the purpose is to remove the surface dirt on the luminous characteristics of the impact;Whether the display surface damage cracks;Whether the communication distribution cable line is normal;For equipment with high protection level, although the use of high reliability components and connectors, but lead to its airtightness has become a key factor, therefore, to regularly check the integrity of the seal;For the outdoor screen steel structure to check the surface paint and corrosion;For outdoor screen surface pollution is particularly serious, but also to clean the display surface.
LED display cleaning is a high-altitude operation, need to be equipped with a professional cleaning team.Cleaning operation adopts high hanging rope (commonly known as spider man) or hanging blue, equipped with professional cleaning equipment, cleaning personnel according to the different dirt on the screen to choose different cleaners targeted cleaning, so as to ensure that the LED light tube and mask under the premise of the completion of LED display cleaning work.
Cleaning preparation needs to pay attention to two points:
First, before cleaning, need to pull out the power cord.
Second, the choice of cleaning liquid, cleaning liquid generally includes electrolyte, high purity distilled water, antistatic liquid, etc., to choose good quality, in order to effectively clean the dust and other stains on the LED screen.
Cleaning and maintenance is divided into three steps:
Step 1: Vacuum.First remove and remove dirt and dust from the surface of the display mask.
Step 2: Wet wash.Be careful not to spray the lotion directly onto the screen. Instead, spray a small amount of the lotion onto the cloth and wipe it gently in the same direction.Also can use the soft hair brush on the vacuum cleaner to the lamp mask brush, brush dirt clean.
Step 3: Dry.Make sure the screen mask is clean and dust-free by vacuuming up any traces of water left after wet and dry cleaning.