GCD207B101 3BHE024642R0101我们在维修电路板时，可以根据电路板电路块的结构组成将电路板划分成一块块单元电路, 然后判断是那一个电路块出现的故障,在去查找锁定的电路块中是哪-个电子元件损坏,然后采用同型号同规格的电子元件进行更换，将发生故障的电路板维修好。那么我们电路板中电路具体分为哪些电路块，怎样判断各电路块是否存在故障、我们又该怎样查呢?GCD207B101 3BHE024642R0101在电路板中,不管是什么类型的电路板基本.上都是由:电源给应电路、输入接口电路、微处理器控制电路、输出接口电路、显示电路、保护电路和通信电路等7大部分电路组成。只要咱们掌握了这大类的电路组成结构和控制原理,知道每类电路的结构组成特点和关键部件，能在电路板中判断出每部分电路是属于那-类电路，熟悉每一类电路的故障规律和特点 就可以针对各种类型的电路板进行维修了。GCD207B101 3BHE024642R0101电源供应电路:电源供应电路部分电路是向整个电路板中各个单元电路提供能量的一部分电路，它工作在融压、大电流的环境下，是最容易出故障的-部分电路。电源供应电路的功用是:将220VAC或380VAC交流电转换成电路板所需的各种不同等级、输出电压恒定的+5V、12V、 15V、 18V、 24V等级别的直流电。
GCD207B101
GCD207B101 3BHE024642R0101 When repairing a circuit board, we can divide the circuit board into unit circuits based on the structural composition of the circuit board circuit blocks, and then determine which circuit block is faulty. We need to find which electronic component in the locked circuit block is damaged, and then replace it with electronic components of the same model and specification to repair the faulty circuit board. So what specific circuit blocks are the circuits in our circuit board divided into, how can we determine if each circuit block has a fault, and how should we investigate it? GCD207B101 3BHE024642R0101 In a circuit board, regardless of its type, it is basically composed of seven major circuit components: power supply circuit, input interface circuit, microprocessor control circuit, output interface circuit, display circuit, protection circuit, and communication circuit. As long as we master the composition structure and control principles of these major types of circuits, know the structural characteristics and key components of each type of circuit, can determine which type of circuit each part belongs to in the circuit board, and be familiar with the fault patterns and characteristics of each type of circuit, we can carry out maintenance for various types of circuit boards. GCD207B101 3BHE024642R0101 Power Supply Circuit: The power supply circuit is a part of the circuit that provides energy to each unit circuit in the entire circuit board. It operates in a melting voltage and high current environment and is the most prone part of the circuit to malfunction. The function of the power supply circuit is to convert 220VAC or 380VAC AC power into various levels of DC power with constant output voltage of+5V, 12V, 15V, 18V, 24V and other levels required for the circuit board.
GCD207B101
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GCD207B101
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