正翻译步骤 1
步骤 1
Fault Finding
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Hold the power button to turn on the phone. There is no response from the phone.
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Take apart the phone and take out the motherboard.
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Measure the boot current first. The current pointer moves from 0 to 100mA, then 0, back and forth.
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Judging by this, the upper layer or the third space PCB has malfunctioned.