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例1 AV伴音有“沙沙”杂音,而TV伴音变大。检修:三洋A12机芯AV/TV转换电路均集成在N101(LA76810A)内部,测量与AV伴音有关的①脚(音频信号输出端)和②脚(调频伴音输出/第二伴音中频)电压,基本正常。对照一台正常电视机,测量N101(LA76810A)的①脚及②脚电压,正常电压值:①脚为2.2V左右;②脚为2.3V左右,其规律为②脚电
Example 1 AV sound “rustle” noise, and TV sound larger. Maintenance: Sanyo A12 movement AV / TV conversion circuit are integrated inside the N101 (LA76810A), and the AV sound with the relevant measurement of ① feet (audio signal output) and ② feet (FM audio output / second audio intermediate frequency) voltage, the basic normal. Control a normal TV, measuring N101 (LA76810A) ① feet and ② feet voltage, normal voltage values: ① feet is about 2.2V; ② feet is about 2.3V, the law is ② feet