西门子840D数控面板黑屏维修，西门子PCU20黑屏电源故障维修，西门子PCU20维修
维修故障包括：按键损坏，电源板故障、高压板故障，液晶故障、主板坏、上电黑屏、花屏、暗屏、触摸失灵，不能正常开机、触摸问题、按键问题、屏幕显示问题（屏碎、花屏、白屏、黑屏等）、通讯问题（触摸无反应、触摸反应慢等）、电源故障、主板问题、系统问题等工控机无法安装操作系统；工控机按下开关，可以看到指示灯亮，但屏幕无显示；工控机开机屏幕出现英文或数字报错，无法进入系统；工控机不识别光驱、硬盘、软驱、串口、并口、网卡口等；工控机按下开关，没有任何反应(无法开机)；工控机经常死机、掉电或自动重启；工控机密码遗忘，无法进入系统；工控机电池无法充电。
PCU20 PC处理器:
6FC5210-0AA00-0AA0 6FC5210-0AD21-0AA0 6FC5210-0DA00-0AA0
6FC5210-0DA00-1AA0 6FC5210-0DA00-1AA1 6FC5210-0DA10-0AA0
6FC5210-0DA10-0AA1 6FC5210-0DA11-0AA0 6FC5210-0DA20-0AA0
6FC5210-0DA20-0AA1 6FC5210-0DA20-1AA0 6FC5210-0DA20-1AA1
6FC5210-0DA20-1AA2 6FC5210-0DA20-2AA0 6FC5210-0DA20-2AA1
6FC5210-0DA20-2AA2 6FC5210-0DA21-0AA0 6FC5210-0DA21-0AA1
6FC5210-0DA21-1AA0 6FC5210-0DA21-1AA2 6FC5210-0DA21-2AA0
6FC5210-0DA21-2AA1 6FC5210-0DA21-2AA2 6FC5210-0DB21-3AA1
6FC5210-0DB22-3AA1 6FC5210-0DF00-0AA0 6FC5210-0DF00-0AA1
6FC5210-0DF00-0AA2 6FC5210-0DF00-1AA0 6FC5210-0DF00-1AA1
6FC5210-0DF00-1AA2 6FC5210-0DF01-0AA0 6FC5210-0DF02-0AA0
6FC5210-0DF03-0AA0 6FC5210-0DF04-0AA0 6FC5210-0DF05-0AA0
6FC5210-0DF20-0AA0 6FC5210-0DF21-0AA0 6FC5210-0DF21-2AA0
6FC5210-0DF22-0AA0 6FC5210-0DF22-1AA0 6FC5210-0DF22-2AA0
6FC5210-0DF23-2AA0 6FC5210-0DF24-0AA0 6FC5210-0DF24-2AA0
6FC5210-0DF25-2AA0 6FC5210-0DF31-2AA0 6FC5210-0DF33-2AA0
6FC5210-0AA00-0AA0 6FC5210-0AD21-0AA0 6FC5210-0DA00-0AA0
6FC5210-0DA00-0AA0 6FC5210-0DA00-1AA0 6FC5210-0DA00-1AA0
6FC5210-0DA00-1AA1 6FC5210-0DA00-1AA1 6FC5210-0DA10-0AA0
6FC5210-0DA10-0AA0 6FC5210-0DA10-0AA1 6FC5210-0DA10-0AA1
6FC5210-0DA11-0AA0 6FC5210-0DA20-0AA0 6FC5210-0DA20-0AA0
6FC5210-0DA20-0AA1 6FC5210-0DA20-0AA1 6FC5210-0DA20-1AA0
6FC5210-0DA20-1AA0 6FC5210-0DA20-1AA1 6FC5210-0DA20-1AA1
6FC5210-0DA20-1AA2 6FC5210-0DA20-1AA2 6FC5210-0DA20-2AA0
6FC5210-0DA20-2AA0 6FC5210-0DA20-2AA1 6FC5210-0DA20-2AA1
6FC5210-0DA20-2AA2 6FC5210-0DA20-2AA1 6FC5210-0DA21-0AA0
6FC5210-0DA21-0AA0 6FC5210-0DA21-0AA1 6FC5210-0DA21-0AA1
6FC5210-0DA21-1AA0 6FC5210-0DA21-1AA0 6FC5210-0DA21-1AA2
6FC5210-0DA21-1AA2 6FC5210-0DA21-2AA0 6FC5210-0DA21-2AA0
6FC5210-0DA21-2AA1 6FC5210-0DA21-2AA1 6FC5210-0DA21-2AA2
6FC5210-0DA21-2AA2 6FC5210-0DB21-3AA1 6FC5210-0DB21-3AA1
6FC5210-0DB22-3AA1 6FC5210-0DB22-3AA1 6FC5210-0DF00-0AA0
6FC5210-0DF00-0AA0 6FC5210-0DF00-0AA1 6FC5210-0DF00-0AA1
6FC5210-0DF00-0AA2 6FC5210-0DF00-0AA2 6FC5210-0DF00-1AA0
6FC5210-0DF00-1AA0 6FC5210-0DF00-1AA1 6FC5210-0DF00-1AA1
6FC5210-0DF00-1AA2 6FC5210-0DF00-1AA2 6FC5210-0DF01-0AA0
6FC5210-0DF01-0AA0 6FC5210-0DF02-0AA0 6FC5210-0DF02-0AA0
6FC5210-0DF03-0AA0 6FC5210-0DF03-0AA0 6FC5210-0DF04-0AA0
6FC5210-0DF04-0AA0 6FC5210-0DF05-0AA0 6FC5210-0DF05-0AA0
6FC5210-0DF20-0AA0 6FC5210-0DF20-0AA0 6FC5210-0DF21-0AA0
6FC5210-0DF21-0AA0 6FC5210-0DF21-2AA0 6FC5210-0DF21-2AA0
6FC5210-0DF22-0AA0 6FC5210-0DF22-0AA0 6FC5210-0DF22-1AA0
6FC5210-0DF22-1AA0 6FC5210-0DF22-2AA0 6FC5210-0DF22-2AA0
6FC5210-0DF23-2AA0 6FC5210-0DF23-2AA0 6FC5210-0DF24-0AA0
6FC5210-0DF24-0AA0 6FC5210-0DF24-2AA0 6FC5210-0DF24-2AA0
6FC5210-0DF25-2AA0 6FC5210-0DF25-2AA0 6FC5210-0DF31-2AA0
6FC5210-0DF31-2AA0 6FC5210-0DF33-2AA0 6FC5210-0DF33-2AA0
6FC5210-0DA20-0AA1 6FC5210-0DA20-1AA0 6FC5210-0DA20-2AA0
6FC5210-0DA21-0AA0 6FC5210-0DA21-0AA1 6FC5211-0AA00-0AA0
