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例1:水平一条亮线,但伴音正常。1996年1期故障分析与检修:青松牌单片机电路与飞跃35D8—C电路相同,水平一条亮线,说明场扫描电路不工作,由于单片机场扫描电路MC13007P等集成块内部电路和分立元件4BG_1、4BG_4、4BG_5构成的场输出电路组成,区别故障部位的办法是测量4BG_1基极电压是否正常(0.7V),该电压正常,证明MC23007P内部
Example 1: a bright horizontal line, but the sound is normal. 1996 年 1 Failure Analysis and Maintenance: Ching Chung SCM circuit and leap 35D8-C circuit is the same level of a bright line, indicating that the field scan circuit does not work, due to monolithic airport scan circuit MC13007P and other integrated block internal circuits and discrete components 4BG_1,4BG_4 , 4BG_5 composition of the field output circuit, the way to distinguish the fault location is to measure the base voltage of 4BG_1 normal (0.7V), the voltage is normal, that MC23007P internal