输入你的笔记本服务编号service tag
戴尔笔记本返修回来后.官网输入快速服务码不显示机型了
您可以在system info查看服务编号(service tag)
6520s421入手
按照技术人员指引解决问题1京东先找到你的显示器后方的service tag
Tips:Do Not Provide
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