嵌入式主板的硬件故障如何排除 一、先檢查電源，后件 電源的作用很重要，功率不足、輸出電壓電流異常等都會引起各種故障。因此，應先排除電源問題，然后再考慮其他部件。 二、先檢查外部設備，后檢查主機 由外部設備引起的故障通常更容易發(fā)現(xiàn)和排除，可以先根據(jù)系統(tǒng)報錯信息檢查外部設備的各種連線和自身的工作情況;排除外部設備的原因后，再考慮主機。 三、先檢查軟件，后檢查硬件 嵌入式主板出現(xiàn)故障后，先要排除軟件原因，再考慮硬件原因。 四、先考慮簡單故障，后考慮復雜故障 硬件產品并不易損，所以當遇到硬件故障時，應該從簡單的原因開始檢查，例如判斷各種線纜的連接是否正常，各種插卡是否接觸不良等。如果檢查后故障依舊，此時可考慮電路或元件機械部分更復雜的故障。
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