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目前,新老机型彩色电视中均设置有AFT电路——自动频率调整电路,为稳定地收看电视节目起了很大的作用。但是,AFT电路又是彩电故障的高发部位,由于不太影响收看,加之判断起来有一定难度,此电路发生的故障往往不为人们所重视。本人多次检修对AFT电路的作用、原理和维修作些介绍,以期引起人们对AFT电路的足够重视。
At present, the new and old models are equipped with color TV AFT circuit - automatic frequency adjustment circuit, to watch a stable television program played a big role. However, AFT circuit is the high incidence of color TV failure, because it does not affect the viewing, coupled with the judgment of a certain degree of difficulty, the failure of this circuit is often not people pay attention. I repeatedly repair the role of the AFT circuit, some of the principles and maintenance introduced in order to cause people enough attention to the AFT circuit.