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3.从故障检测电路采取措施,解除保护状态在确定是IC01的脚外部检测电路引起的保护后,为缩小故障范围,可恢复IC01的脚与检测电路的连接,采取逐个断开与脚相连接的隔离二极管D865、D864、D863、D412和三极管Q856、Q991的方法,每断开一路检测电路,作一次开机试验,如果断开哪路故障检测电路与保护执行电路的连接后,开机退出保护,则是该故障检测电路或其被检测电路发生故障引起的保护。
3. From the fault detection circuit to take measures to lift the protection state IC01 pin is determined to be caused by the external detection circuit protection, in order to narrow the fault range, IC01 feet can be restored and the detection circuit connection, one by one disconnected and connected to the foot Of the isolation diode D865, D864, D863, D412 and the transistor Q856, Q991 method, each disconnect a detection circuit, make a boot test, disconnect the fault detection circuit and the protection of the implementation of the circuit connection, the boot exit protection, It is the protection caused by the fault detection circuit or its detected circuit failure.