西门子ncu维修故障：

1.西门子840d数控系统西门子ncu开不了机，开机ncu不能启动。

2.西门子840d数控系统的ncu盒7段数码管没有显示，屏幕报警提示nc\plc未连接，（ncu和pcu都有问题）。

3.送电瞬间所有灯都亮，但是数码管无显示，然后所有灯瞬间变暗，pok灯熄灭，数码管不亮

4.ncu板子h1，h2灯全亮的故障

5.840d系统，现报2120号警（nck风扇报警），更换了一块ncu盒后仍然出现2120报警--ncu坏了

6.840d系统ncu不能启动。西门子840d/de数控伺服系统ncu主板维修型号： 

NCU  571.2  6FC5357-0BB11-0AE0维修
NCU  571.3  6FC5357-0BB11-0AE1维修
NCU  571.3  6FC5357-0BB13-0AA0维修
NCU  571.3  6FC5357-0BB13-0AA1维修
NCU  571.4  6FC5357-0BB14-0AA0维修
NCU  571.4  6FC5357-0BB12-0AE0维修
NCU  571.5  6FC5357-0BB15-0AA0维修
 
NCU  572.2  6FC5357-0BB21-0AE0维修
NCU  572.2  6FC5357-0BB21-0AE1维修
NCU  572.2  6FC5357-0BB52-0AE0维修
NCU  572.3  6FC5357-0BB22-0AE0维修
NCU  572.3  6FC5357-0BB23-0AA0维修
NCU  572.3  6FC5357-0BB23-0AA1维修
 
NCU  572.4  6FC5357-0BB23-0AE0维修
NCU  572.4  6FC5357-0BB24-0AA0维修
NCU  572.5  6FC5357-0BB25-0AA0维修
NCU  573.2  6FC5357-0BB31-0AE0维修
NCU  573.2  6FC5357-0BB33-0AE0维修
NCU  573.2  6FC5357-0BB33-0AE1维修
NCU  573.2  6FC5357-0BB53-0AE1维修
 
NCU  573.3  6FC5357-0BB33-0AE2维修
NCU  573.3  6FC5357-0BB33-0AE3维修
NCU  573.3  6FC5357-0BB33-0AA0维修
NCU  573.3  6FC5357-0BB33-0AA1维修
NCU  573.4  6FC5357-0BB34-0AA0维修
NCU  573.4  6FC5357-0BB34-0AE0维修
NCU  573.4  6FC5357-0BB34-0AE1维修
 
NCU  573.5  6FC5357-0BB35-0AA0维修
NCU  573.5  6FC5357-0BB35-0AE0维修
NCU  561.4  6FC5356-0BB12-0AE0维修
NCU  573.5  6FC5357-0BB35-0AE0维修
 
6FC5247-0AA00-0AA3维修
NCU  box  for  accommodating  the  NCU561.5/571.5/572.5/573.5  
NCU  561.5  6FC5356-0BB15-0AA0维修 
NCU  571.5  6FC5357-0BB15-0AA0维修
NCU  572.5  6FC5357-0BB25-0AA0维修
NCU  573.5  6FC5357-0BB35-0AA0维修
 
西门子840D/SL数控伺服主板NCU710.2/720.2/720.2PN/730.2/730.2PN
NCU  710.2  6FC5371-0AA10-0AA1维修
NCU  720.2  6FC5372-0AA00-0AA1维修
NCU  720.2PN  6FC5372-0AA01-0AA1维修
NCU  730.2  6FC5373-0AA00-0AA1维修
NCU  730.2PN  6FC5373-0AA01-0AA1维修
 
西门子810D/810DE数控伺服系统CCU1/CCU3/CCU3.4控制主板:
6FC5410-0AY03-0AA1维修  6FC5410-0AY01-0AA0维修  
6FC5410-0AY03-1AA0维修  6FC5410-0AY01-0AA1维修
6FC5410-0AY00-0AA0维修  6FC5410-0AY01-0AA0维修
6FC5410-0AY03-0AA0维修  6FC5410-0AY03-0AA2维修
6FC5410-0AA01-0AA0维修  6FC5410-0AX02-0AA0维修
6FC5410-0AX02-1AA0维修  6FC5410-0AA00-0AA0维修
 
6FC5250-3AX20-6AH0维修  进口西门子NCU坏维修
6FC5250-6CY30-5AH0维修  840D西门子NCU坏维修
6FC5250-6BY30-5AH0维修  6FC5210-0DA00-1AA1维修
6FC5210-0DA20-2AA1维修  6FC5210-0DF00-0AA2维修  
6FC5210-0DF00-1AA1维修  6FC5210-0DF20-0AA0维修  
6FC5210-0DA00-0AA0维修  6FC5210-0DA00-1AA1维修  
6FC5210-0DA20-0AA1维修  6FC5210-0DA20-2AA1维修  
6FC5210-0DF00-0AA2维修  6FC5210-0DF00-1AA1维修  
6FC5210-0DA10-0AA0维修  6FC5210-0DA20-1AA0维修