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开机后工作一会就停止工作 #90
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很久没使用了,最近启动后发现一个问题,打印机通电后,LED会正常点亮,然后几秒钟后就灭掉。
查看电路,电源在正常工作,主板亮一个LED灯(工作正常那会儿是亮2个或3个)
怀疑是主板问题,找了主板电路图,用万用表测得电源输入电压24V
然后在上图的VIN和12V1的位置,测得电压也都是24V
是不是电压没有降到12V导致的无法正常工作,如果是的话,应该是哪个元器件的问题
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