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下列情况是什么问题
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请问原理图转pcb时（EC0）出现这个错误是什么原因
Line 195 , Section *NET*
R8.1U1.26
* Pin number 26 is out of range for part U1 STC89C51
Line 197 , Section *NET*
R12.1U1.27
* Pin number 27 is out of range for part U1 STC89C51
Line 199 , Section *NET*
R16.1U1.28
* Pin number 28 is out of range for part U1 STC89C51
Line 201 , Section *NET*
R9.1U1.37
* Pin number 37 is out of range for part U1 STC89C51
Line 195 , Section *NET*
R8.1U1.26
* Pin number 26 is out of range for part U1 STC89C51
Line 197 , Section *NET*
R12.1U1.27
* Pin number 27 is out of range for part U1 STC89C51
Line 199 , Section *NET*
R16.1U1.28
* Pin number 28 is out of range for part U1 STC89C51
Line 201 , Section *NET*
R9.1U1.37
* Pin number 37 is out of range for part U1 STC89C51
我也没有遇到，期待大虾指点。
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