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1.不能开机/关机 引起手机不能开机/关机的故障部位主要有:电源电路、接收电路、音频逻辑电路、面板控制电路。不能开机的故障现象与原因均很复杂。如开机后无任何反应,则称为“死机”。“死机”时,由于无故障现象,难以确定故障范围,可采用给手机外加电源的方法进行初步的故障范围判定。 接上外接电源,并串入电流表,如电流表有电流显示,但电流太小,则
1 can not boot / shutdown caused by the phone can not boot / shutdown of the fault parts are: power circuit, receiving circuit, audio logic circuit, panel control circuit. Can not boot the phenomenon and the reasons are complicated. Such as boot without any response, then called “crash.” “Dead machine”, due to no fault phenomenon, it is difficult to determine the scope of the fault, the method can be used to power the phone to determine the initial fault range. Connected to an external power supply, and string into the ammeter, such as the current meter current display, but the current is too small, then