西门子840Dsl数控系统维修

一、西门子pcu维修 显示器黑屏维修案例：

1.故障现象：

沈阳机床厂生产的数控二轴深孔钻床，西门子840d系统带pcu50，面板为op10c，在开机状态下，显示器突然黑屏，开始以为显示屏进入待机状态，但之后按任意键无法激活屏幕，重启机床也无法点亮显示器。

2.故障分析：

该机床在未断电状态下突然黑屏，屏幕上无任何信息，而mcp和ncu上的指示灯都显示正常，按下mcp上的键，机床能正常响应。说明机床控制部分并无大碍。

3.处理方法：

①先检查pcu50的供电单元，测量pcu50电源模块的输入电压为+24v左右.与理论电压一致，说明供电正常。

②将个人电脑的显示器外接在pcu50的vga接口上，发现能点亮，并能正常进人操作界面。因此判断西门子840d的op单元损坏。

4.结论：

pcu50实际就是一台不太但很稳定的pc机，在遇到可能是pcu50故障的情况时，要充分利用pc机的资源和知识。

二、除了西门子pcu维修 显示器黑屏维修，pcu50作为整个数控系统中的重要组成部分，故障率高。其他故障问题，

西门子pcu50主机维修型号：

6fc5210-0df01-0aa0维修 pcu50 6fc5210-0df01-0aa0维修 810d/840d维修

6fc5210-0df02-0aa0维修 pcu 50, hmi 6fc5210-0df02-0aa0维修810d/840d维修

6fc5210-0df03-0aa0维修 pcu 50 6fc5210-0df03-0aa0维修 810d/840d维修

6fc5210-0df04-0aa0维修 pcu 70, win 6fc5210-0df04-0aa0维修

6fc5210-0df05-0aa0维修 pcu 50, win 6fc5210-0df05-0aa0810d/840d维修

6fc5210-0df20-0aa0维修 pcu 50 566mhz, nt4.06fc5210-0df20-0aa0维修

6fc5210-0df21-0aa0维修 pcu 50 566mhz, nt4.06fc5210-0df21-0aa0维修

6fc5210-0df21-2aa0维修 pcu 50 566mhz, win xp6fc5210-0df21-2aa0维修

6fc5210-0df22-0aa0维修 pcu 50 1,2ghz, nt4.06fc5210-0df22-0aa0维修

6fc5210-0df22-1aa0维修 pcu50 1,2ghz, win20006fc5210-0df22-1aa0维修

6fc5210-0df22-2aa0维修 pcu50 1,2ghz, win xp6fc5210-0df22-2aa0维修

6fc5210-0df23-2aa0维修 pcu 50 566mhz, win xp6fc5210-0df23-2aa0维修

6fc5210-0df00-0aa0 pcu 20, 166mhz/16mb 6fc5210-0df00-0aa0

6fc5210-0df00-0aa1 pcu20 spc 166mhz/32mb 6fc5210-0df00-0aa1

6fc5210-0df00-0aa2 pcu20 spc 266mhz/32mb 6fc5210-0df00-0aa2

6fc5210-0df00-1aa0 pcu 20, 233mhz/32mb 6fc5210-0df00-1aa0

6fc5210-0df00-1aa1 pcu20 spc 233mhz/32mb 6fc5210-0df00-1aa1

6fc5210-0df00-1aa2 pcu20 spc 333mhz/32mb 6fc5210-0df00-1aa2

6fc5210-0df01-0aa0 pcu50 6fc5210-0df01-0aa0 810d/840d

6fc5210-0df02-0aa0 pcu 50, hmi 6fc5210-0df02-0aa0 810d/840d

6fc5210-0df03-0aa0 pcu 50 6fc5210-0df03-0aa0 810d/840d

6fc5210-0df04-0aa0 pcu 70, win 6fc5210-0df04-0aa0

6fc5210-0df05-0aa0 pcu 50, win 6fc5210-0df05-0aa0 810d/840d

6fc5210-0df20-0aa0 pcu 50 566mhz, nt4.0 6fc5210-0df20-0aa0

6fc5210-0df21-0aa0 pcu 50 566mhz, nt4.0 6fc5210-0df21-0aa0

6fc5210-0df21-2aa0 pcu 50 566mhz, win xp 6fc5210-0df21-2aa0

6fc5210-0df22-0aa0 pcu 50 1,2ghz, nt4.0 6fc5210-0df22-0aa0

6fc5210-0df22-1aa0 pcu50 1,2ghz, win2000 6fc5210-0df22-1aa0

6fc5210-0df22-2aa0 pcu50 1,2ghz, win xp 6fc5210-0df22-2aa0

6fc5210-0df23-2aa0 pcu 50 566mhz, win xp 6fc5210-0df23-2aa0

6fc5210-0df24-0aa0 pcu70 1,2ghz, win nt 6fc5210-0df24-0aa0

6fc5210-0df24-2aa0 pcu70 1,2ghz, win xp 6fc5210-0df24-2aa0

6fc5210-0df25-2aa0 pcu50 1,2ghz, win xp 6fc5210-0df25-2aa0

6fc5210-0df31-2aa0 pcu50.3-c, winxp 6fc5210-0df31-2aa0

6fc5210-0df33-2aa0 pcu50.3-p, winxp 6fc5210-0df33-2aa0