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八、超外差收音机的检修收音机的检修是一个有规律、有条理的循序渐进过程。从图1～图6所示的各原理图中,我们已经了解了收音机这条信号通道的工作情况。各单元电路的工作既相互独立,又相互依赖,环环紧扣,无论哪个环节或哪个元件出现问题,都会造成故障。在检修过程中,只要我们能运用逻辑思维的方法,把握故障现象,认真分析故障原因,合理应用检测方法,就可得出合乎情理的判断。因此,故障检测的过程是一个不断深化认识的过程,一旦判断准确,即可获得立竿见影的效果。
Eight, superheterodyne radio overhaul radio repair is a regular, organized step by step process. From the schematics shown in Fig. 1 to Fig. 6, we have already understood the work of this signal channel of the radio. The work of each unit circuit independent of each other, but also dependent on each other, the ring fastened, no matter what part or which element of the problem, will result in failure. In the maintenance process, as long as we can use logical thinking method to grasp the phenomenon of failure, careful analysis of the causes of failure, the rational application of detection methods, you can come to reasonable judgments. Therefore, the process of fault detection is a process of deepening understanding, once the judgment is accurate, you can get immediate results.