西门子840D数控系统NCU-B0X 6FC5247-0AA00-0AA2故障维修
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上海屹城自动化科技有限公司为您解决一系列故障现象：西门子840D系列NCU-B0X 6FC5247-0AA00-0AA2出现的故障为上电之后数码管无显示，数码管显示“1”,数码管显示“3”，数码管显示“8”，数码管走“106”和“109”等。如果NCU出现上述报警均属于NCU有故障，NCU正常状态为数码管显示“6”和两个绿灯亮才属正常。如果有技术上的问题可以跟我们，西门子840D/DE数控伺服系统NCU主板维修型号：
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NCU 573.5 数控主板 6FC5357-0BB35-0AA
