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江淮瑞风S3原车导航不开机维修

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Post time: 2018-9-14 21:47:46
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工作台加电无反应,测CPU STM32F103---100供电正常,测晶振两端无电压!测晶振对地无短路,更换晶振试之无效。测14脚无电压。为 快速判断复位故障部位,断开主板与背板线排单独给主板加电,有0.38A电流,说明CPU已启动。连好主板与背板线排,再断开按键板与背板的连线,开机正常。检测到面板复位按键短路。。。。。

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Post time: 2018-9-14 23:10:36
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Thank you for your post.
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Post time: 2018-9-15 13:49:41
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谢谢您的分享
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Post time: 2018-9-17 19:53:15
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这样也可以
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Post time: 2018-9-17 23:25:52
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谢谢您的分享
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Post time: 2018-9-20 08:41:42
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感谢分享的好经验!一个小按键引起大问题!
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Post time: 2019-6-9 17:58:53
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这个也就听歌了!导航太老了
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