四、常见电路故障的表现形式及其故障发生范围这里所说的电路故障,是指电路中的元器件以及它们之间的连接电路、接插件、开关等质量变差或发生断、短路故障,或者说是与 I~2C 总线调整数据无关的故障。当然,故障发生的位置不同,其表现形式也不一样。下面举几个典型的例子,重点说明一下如何根据故障现象,结合电路原理,推断故障发生的范围。1.开机后无光栅、无图像、无任何声响,即“三无”故障:应首先考虑电源系统,其次是控制系统。因为前 Fourth, the common form of circuit failure and failure occurred Range of fault here refers to the circuit components and their connection between the circuit, connectors, switches and other poor quality or broken, short circuit fault, Or it is with I2C bus adjustment data unrelated fault. Of course, the location of the failure occurs, its manifestations are not the same. Here are a few typical examples, focusing on how to explain how to fault phenomenon, combined with circuit theory, infer the scope of the fault occurred. 1. No raster after boot, no image, no sound, that is, “three no ” failure: Should first consider the power system, followed by the control system. Because before