求助 关于DXP 设计规则检查

DXP中用DRC来验证PCB的设计，.DRC文件出现如下字样，请高手指点



Processing Rule : Room SAD (Bounding Region = (151.257mm, 75.057mm, 768.604mm, 115.062mm(InComponentClass('SAD'))
Violation between Component X101(20.193mm,32.639mm) on Top Layer and
Room SAD (Bounding Region = (151.257mm, 75.057mm, 768.604mm, 115.062mm) (InComponentClass ('SAD'))
Violation between SOIC Component U3(78.232mm,46.736mm) on Top Layer and
Room SAD (Bounding Region = (151.257mm, 75.057mm, 768.604mm, 115.062mm) (InComponentClass('SAD'))

请问高手上面这段文字表示我的PCB中有什么错误，如何修改，谢谢！
具体是这样的，我把SCH Update 到PCB中 ，然后我在SCH中改了一个元件，然后Update更新PCB ，DRC检查后就出现上面的错误，请问是为什么 怎么改？谢谢
[此贴子已经被作者于2007-5-15 12:22:41编辑过]