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A1708/EMC 2978—于2016年10月上市,这台入门级MacBook Pro保留了它传统的功能键(相对于OLED触摸条)。功能键版本带有英特尔酷睿i5和2个雷电3端口。

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Fan is not working

I have a macbook pro a1708, the fan is not working. I replaced this but it didn't help.

I can't find any damage on the motherboard, on the 2nd pin of the fan connector output is 5v

I try also the SMC reset.

Hardware diagnose error is PPF004

Do you have any tips?

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已选择的解决方案

Not sure why you jumped to the logic board as you still have the connection pathway to it to check. From the fan units connector within the upper case which then transitions to the keyboard/trackpad cable to the logic board.

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I will check the output voltage of the keyboard/trackpad cable

完成的

@danj Thank you for your tip! I see that this cable have 1 broken pin. I order immediately an new cable and let you know asap!

完成的

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