AIX P510 掉电后不能启动，请问怎么排查问题。
前面板报错D200A200，查到D200A200的报错可能故障如下：
D200A200 Begin partition power down. SRC word 3 contains the reason for the power off.
SRC word 3 power down reasons
1: White button power down (also known as delayed power off)
2: Partition requested power down
3: Partition requested end of life
4: System wide shutdown
5: Attention link loader
6: Attention MSD
7: Panel function 3 requested
8: Panel function 8 requested
9: Panel function 22 requested
A: Panel function 34 requested
请问我改怎么进一步定位故障点，那种情况最有可能。
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