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(3)为了快速判断故障部位,先检测超级芯片N103(VCT3803A)⑥脚(PROTECT——保护端)电压,发现在低电平时,则自动关机,说明故障系保护性关机。进一步检测,发现VCT3803A⑦脚(电源开/待机端)电压也
(3) In order to quickly determine the fault location, first detect the voltage of the PROTECT pin of the super chip N103 (VCT3803A), and then turn it off automatically when it is in the low level, indicating that the fault is a protective shutdown. Further testing found VCT3803A ⑦ feet (power on / standby side) voltage is also