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分析检修:此现象说明是3L_1(6.5MHz)失谐造成的,但该机3L_1已固定,不能调节磁芯;查电路知,TDA3190P脚外接电容3C_1将反馈的交流信号旁
Analysis and maintenance: This phenomenon is caused by the detuning of 3L_1 (6.5MHz), but the aircraft has fixed 3L_1, can not adjust the core; check the circuit to know, TDA3190P foot external capacitor 3C_1 next to the AC signal feedback