马上注册,结交更多好友,享用更多功能。
您需要 登录 才可以下载或查看,没有帐号?注册
x
接手一台联想G450,SUSP 在待机情况下没有3.3V,怎么搞都搞不出来,看图, SUSP 在待机情况下应该有3.3V高电平,现在主板上没有,RTCVREF 有3.3的高电平,起上拉的作用,现在是R279 1脚有3.3V,2脚没有,把R279单独测量,10K正常(已经换掉了),SUSP 所到之处没有短路,把Q37摘掉,还是没有3.3V高电平,把SUSP 所到之处的管子电阻都拔掉,3.3V还是没有,现在不知道该怎么修了,请高手指点! 再说明一下Q37正常。电阻R279正常。SUSP这一路没有短路。我把+3VS的Q29 、 Q26 已经断开,把R279 单独拉过去还是要拉没。再把其他的断开拉也是一样拉没。现在是完全搞不懂了,请高手指导。 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] 这是SUSP所到之处,高手指点指点拜托了。. ~" t8 |5 Q7 k- ^2 i. q
) I) K0 s5 {% i) _
; K @* J( ^* [ v5 I( [* r V9 Q" N: R
3 W2 C% H0 [0 V; Y% Z- x; ]
2 ]7 N! l- p8 u
* J. Q5 i3 B+ \ c5 G) D3 O* h# g( y6 \, |
|