自己照着开发板画的板子，没有焊DSP，用PMBUS调的，焊了三块板子，每块板子都是第一路有输出，第二路没有输出，而且ucd7242设计的时候SREA和SREB上拉到3.3V，可SREB测得2.9V，没有拉上去，三块板子都是这个问题，能不能帮忙分析分析呢
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