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一、遥控系统的故障特点遥控系统的故障种类繁多,诸如电源停振、行扫描停止、选台失灵、声/图失控、屏显失常等。尽管故障多种多样,但不外乎以下两大类:(1)全部功能失效;(2)部分功能失效。1.全部功能失效若属微处理器的全部功能均失效,其原因不是CPU损坏,就是CPU工作条件不满足。从微处理器的原理可知,CPU正常工作的三个条件,可通过以下方法进行检查:(1)+5V供电(±0.2V),用万用表测试即可判定其是否正常。
First, the remote control system fault features Remote control system has a wide range of fault, such as power stop vibration, line scan stop, channel selection failure, loss of sound / graph control, screen display disorders. Although a variety of failures, but nothing more than the following two categories: (1) all the functional failure; (2) part of the function failure. 1. All functional failure If the microprocessor all the features are invalid, the reason is not CPU damage, CPU is not working conditions. We can see from the principle of the microprocessor, CPU three working conditions can be checked by the following methods: (1) +5 V power supply (± 0.2V), with a multimeter test to determine whether it is normal.