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接手一臺聯(lián)想G450,SUSP 在待機情況下沒(méi)有3.3V,怎么搞都搞不出來(lái),看圖, SUSP 在待機情況下應該有3.3V高電平,現在主板上沒(méi)有,RTCVREF 有3.3的高電平,起上拉的作用,現在是R279 1腳有3.3V,2腳沒(méi)有,把R279單獨測量,10K正常(已經(jīng)換掉了),SUSP 所到之處沒(méi)有短路,把Q37摘掉,還是沒(méi)有3.3V高電平,把SUSP 所到之處的管子電阻都拔掉,3.3V還是沒(méi)有,現在不知道該怎么修了,請高手指點(diǎn)! 再說(shuō)明一下Q37正常。電阻R279正常。SUSP這一路沒(méi)有短路。我把+3VS的Q29 、 Q26 已經(jīng)斷開(kāi),把R279 單獨拉過(guò)去還是要拉沒(méi)。再把其他的斷開(kāi)拉也是一樣拉沒(méi),F在是完全搞不懂了,請高手指導。 file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/SVI$C%@66@OXWXRMF%R7$38.jpg [img]file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/MY_4K8UR)CL]9}{)[4IK08Y.jpg[/img] [img]file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/[1FZG}59]LUIS9KS6[9$FX0.jpg[/img] file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/FYM(`7LQDW9L%7(SQ6QM~CQ.jpg [img]file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/XUO5E5(LP7[W]]`4D6)ER]C.jpg[/img] file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/B1EZY3T310RL59`UNJ$(BCY.jpg file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/R0W(3C8A_WT%7K9$48XD}1V.jpg [img]file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/411051212/QQ/WinTemp/RichOle/WEZ~)RI6KCS7KAR@B34EH7B.jpg[/img] 這是SUSP所到之處,高手指點(diǎn)指點(diǎn)拜托了。
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