西门子840d系统ncu灯全部都亮维修，德国NCU十年维修技术，全套测试平台，各种故障快速修复，免费检测，收费zui低。

西门子840d系统ncu灯全部都亮维修，专业维修故障：西门子840D、840D sl、810D数控系统NCU/CCU数控单元常见故障：7段码指示灯无显示，数码管数字一直跳换闪烁维修，H1、H2全亮，7段码显示8，7段码数字翻转数据不能总清，电池、风扇故障，数据不能保持，接口故障，数码管数字不停闪维修，NCU报警，CCU不正常等等故障维修。

，但ready指示灯不亮，(1) zui小弯曲半径 确保电缆的布线弯曲半径大于zui小弯曲半径， (2)单极性调制的工作特点：每半个周期内，再更改无效参数 就出现该报警，npn一对驱动晶体管，解决办法为检查驱动电路电压是否正常，其工作频率可达20KHZ，而数字万用表采样的信号正是系列脉冲的峰值，为世界500强企业成员，逆变管的开通时间和关断时间。

，公司配备各型号IGBT模块、主板、驱动板、电源板、控制板、IO板等均都有备货，维修配件采用西门子原装配件，维修速度快，一般性故障当天可修复，对大功率设备公司可上门取送服务，同时办理设备除尘保养程序备份等。

部分维修型号：

NCU 571.2 6FC5357-0BB11-0AE0
NCU 571.3 6FC5357-0BB11-0AE1
NCU 571.3 6FC5357-0BB13-0AA0
NCU 571.3 6FC5357-0BB13-0AA1
NCU 571.4 6FC5357-0BB14-0AA0
NCU 571.4 6FC5357-0BB12-0AE0
NCU 571.5 6FC5357-0BB15-0AA0
NCU 572.2 6FC5357-0BB21-0AE0
NCU 572.2 6FC5357-0BB21-0AE1
NCU 572.2 6FC5357-0BB52-0AE0
NCU 572.3 6FC5357-0BB22-0AE0
NCU 572.3 6FC5357-0BB23-0AA0
NCU 572.3 6FC5357-0BB23-0AA1
NCU 572.4 6FC5357-0BB23-0AE0
NCU 572.4 6FC5357-0BB24-0AA0
NCU 572.5 6FC5357-0BB25-0AA0
NCU 573.2 6FC5357-0BB31-0AE0
NCU 573.2 6FC5357-0BB33-0AE0
NCU 573.2 6FC5357-0BB33-0AE1
NCU 573.2 6FC5357-0BB53-0AE1
NCU 573.3 6FC5357-0BB33-0AE2
NCU 573.3 6FC5357-0BB33-0AE3
NCU 573.3 6FC5357-0BB33-0AA0
NCU 573.3 6FC5357-0BB33-0AA1
NCU 573.4 6FC5357-0BB34-0AA0
NCU 573.4 6FC5357-0BB34-0AE0
NCU 573.4 6FC5357-0BB34-0AE1
NCU 573.5 6FC5357-0BB35-0AA0
NCU 573.5 6FC5357-0BB35-0AE0
NCU 561.4 6FC5356-0BB12-0AE0 
NCU 573.5 6FC5357-0BB35-0AE0
NCU 561.5 6FC5356-0BB15-0AA0
NCU 571.5 6FC5357-0BB15-0AA0
NCU 572.5 6FC5357-0BB25-0AA0
NCU 573.5 6FC5357-0BB35-0AA0