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导读:Ⅰ、同一机型有着不同的硬件电路。Ⅱ、同一机型有着不同的总线(OPT)数据(关键选项)。Ⅲ、同一机型装配不同的 CPU。Ⅳ、CN-12机心 CPU 的代换及其他。Ⅴ、CPU 正常工作的又一条件。问题的提出:在我们的记忆中,同一厂家生产的同一型号的电视机(如长虹 SF2198)的电路设计应该是完全相同的。换句话说,只要机型相同,它所使用的元器件型号和数量都是相同的。不会出现相同的两台电视机,其中一台元器件多,另一台元器件少的情况。可是在检修中却偏偏发生了这样的事情。请看如下检修实例
REVIEW: Ⅰ, the same model has a different hardware circuit. Ⅱ, the same model has different bus (OPT) data (key options). Ⅲ, the same model assembly of different CPU. Ⅳ, CN-12 CPU core substitution and other. Ⅴ, CPU another normal working condition. The question raised: In our memory, the same manufacturer’s production of the same type of TV (such as Changhong SF2198) circuit design should be exactly the same. In other words, as long as the model is the same, it uses the same model and number of components. Will not appear the same two TV sets, one of more components, the other components of a small case. But in the maintenance but happens such a thing happened. Please look at the following maintenance example