Circuit board maintenance
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Circuit board maintenance
Circuit board maintenance is a new industry. The automation level of industrial equipment is getting higher and higher, so the number of industrial control boards in various industries is also increasing. After the industrial control board is damaged, the high cost (less than thousands of yuan, more than tens of thousands or hundreds of thousands of yuan) required for replacing the circuit board has become a headache for enterprises. In fact, the vast majority of these damaged circuit boards are repairable in China, and the cost is only 20% - 30% of the purchase of a new board, and the time taken is much shorter than that of foreign fixed boards. The following describes the basic knowledge of circuit board maintenance Almost all circuit board maintenance has no drawing materials, so many people are skeptical of circuit board maintenance. Although various circuit boards vary greatly, the same thing is that each circuit board is composed of various integrated blocks, resistors, capacitors and other devices, so the damage of circuit board must be caused by the damage of one or some of them. The idea of circuit board maintenance is It is based on the above factors. Circuit board maintenance is divided into two parts: Inspection and maintenance, in which inspection occupies a very important position. Test the basic repair knowledge of every device on the circuit board until the broken part is found and replaced, then a circuit board is repaired Circuit board detection is the process of finding, determining and correcting every electronic component fault on circuit board. In fact, the whole testing process is the testing process of thinking process and providing logic reasoning clues. Therefore, the testing engineer must gradually accumulate experience and constantly improve the level in the process of circuit board maintenance, testing and repair. General electronic equipment is composed of thousands of components. During maintenance and repair, it will be very time-consuming and difficult to find problems by directly testing and inspecting each component in the circuit board one by one. Then, from the fault phenomenon to the fault reason, the maintenance mode of "in seat" is an important maintenance method. As long as the circuit board detects the problem, it is easy to repair.