测试主板各关键点来判断主板问题

会员39

北桥的工作电压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 南桥工作电压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;时钟<br/>+3.3v &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;+3.3V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 32.768 南桥 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br/>+1.5V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +5V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 14.318 基本时钟<br/>+1.0v Vtt参考电压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;+1.8V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 33mhz &nbsp;pci<br/>+1.8V hub link线 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +0.9V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 66mhz &nbsp;总线 &nbsp; &nbsp; &nbsp; &nbsp;<br/>+0.9v 不要忽视 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +2v(有的有) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 48mhz &nbsp;usb<br/>+.25V 负载电压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +1.75V(核心电压)<br/>+0.5V 参考<br/>+1.75V<br/>测量NB &nbsp;SB旁或背面的电容....<br/><br/>bios:方BIOS只针对intel的芯片 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 长bios(只针对via,sis方形的bios按长bios看待)<br/>1,25,27脚 &nbsp; &nbsp;vcc +3.3v &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1pin &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 编程脚<br/>2pin &nbsp; &nbsp; &nbsp; &nbsp; 复位 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2pin-12pin,23,25pin-30pin &nbsp;地址线<br/>31pin &nbsp; &nbsp; &nbsp; &nbsp;时钟 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 13pin-15pin 17pin-21pin &nbsp; &nbsp;数据线<br/>13,14,15,17 &nbsp;4条AD线 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;16pin &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;接地<br/>23pin &nbsp; &nbsp; &nbsp; &nbsp;片选 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 22pin &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;片选<br/>24pin &nbsp; &nbsp; &nbsp; &nbsp;初始化脚 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 24pin &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;内存读<br/>16pin &nbsp; &nbsp; &nbsp; &nbsp;接地 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 21pin &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;内存写<br/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 32pin &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;vcc+5V供电<br/><br/>pci的关键点<br/>1,供电 &nbsp;A2 +12V &nbsp; &nbsp;A62 +5v &nbsp; &nbsp;B2 -12V &nbsp; A53 +3.3v<br/>2,时钟 &nbsp;B16 &nbsp;33Mhz &nbsp;由时钟IC发出<br/>3,复位 &nbsp;A15 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;由南桥发出<br/>4,Frame A34 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;帧信号,表示允许总线传输和片选一样在触发和复位瞬间可测<br/>5,32条AD线 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; A &nbsp;20,22,23,25,28,29,31,32,44,46,47,49,54,55,57,58<br/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B &nbsp;20,21,23,24,27,29,30,45,47,48,52,53,55,56,58(各对地阻值电压要基本一至)<br/><br/>AGP的关键点<br/>1,供电 &nbsp;A1 &nbsp;+12V &nbsp;B2 &nbsp;+5V &nbsp;A9 &nbsp;+3.3v &nbsp; B24 &nbsp;+3.3v<br/>2,vddQ &nbsp;B40 A40 &nbsp;既AGP槽的到数第二脚

[此贴子已经被心在飞翔于2006-9-15 21:03:33编辑过]

会员93

辛苦了，！

会员55

是不是原创

会员6

看看

会员32

楼主辛苦啦<br/>

会员22

<strong>测试主板各关键点来判断主板问题</strong>

会员15

干嘛非要回复才能看?

会员69

习学了

<p>不对吧南桥有5V供电吗? PCI的AD线只有31呀?</p>

会员359

楼主辛苦啦<br/>

会员355

谢谢

会员421

谢谢

会员572

<p>学习学习中</p><p>辛苦了LZ</p>

会员249

谢谢&nbsp; 辛苦了

会员97

<p>楼主，那么多点你对都量过吗？我最多知道里面的1/4</p>

会员626

还有，知道了有什么用对会修的人可能有点用．对我这样的人，没有用，SB，NB的点在板上那里我不知道！

会员962

虽然,现在的维修只停留在换电容上面,但无论如何还是要帮你顶的.

会员1118

这么多的,看来要慢慢记下了

会员1155

刚刚开始搞维修，谢谢了

会员41

能不能把显卡的测试点还有显存排列啥的发一下