ABB GCD207B101 3BHE024642R0101 电路板模块

【产品详情】

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一个电子元件损坏，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。只要咱们掌握了这七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一类电路，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，它工作在高电压、大电流的环境下，是最容易出故障的一部分电路。

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。

ABB GCD207B101 3BHE024642R0101 电路板模块

【英文介绍】

GCD207B101 3BHE024642R0101 When we repair the circuit board, we can divide the circuit board into unit circuits according to the structure of the circuit board block, and then determine which circuit block is faulty, and which electronic component is damaged in the locked circuit block. Then the electronic components of the same model and specifications are replaced to repair the faulty circuit board.

So what circuit blocks are the circuits in our circuit board divided into, how to judge whether there is a fault in each circuit block, and how should we check it?

GCD207B101 3BHE024642R0101 In the circuit board, no matter what type of circuit board is basically composed of: power supply circuit, input interface circuit, microprocessor control circuit, output interface circuit, display circuit, protection circuit and communication circuit, etc. As long as we master the circuit composition and control principle of these seven categories, know the structural composition characteristics and key components of each type of circuit, can determine in the circuit board each part of the circuit belongs to that type of circuit, familiar with the fault law and characteristics of each type of circuit, you can repair 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 works in a high voltage and high current environment, and is the most prone to failure.

The function of the power supply circuit is to convert 220VAC or 380VAC AC into a variety of different grades required by the circuit board, and the output voltage is constant ±5V, 12V, 15V, 18V, 24V grade DC.

ABB GCD207B101 3BHE024642R0101 电路板模块

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