Question

ibm x343 服务器MJR灯亮是什么意思，该如何排错。

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Answer 1

用户指南原文：
MJR:
When continuously lit, indicates the presence of a Major System Fault. A major
system fault is an error or event that is detected by the system that has
discernable impact to system operation. In this case, the system can continue
to operate but in a “degraded” fashion (reduced performance or loss of
non-fatal feature reduction). An example could be the loss of one of two
mirrored disks. Additionally, the front panel major alarm relay will engage.

MJR灯为主要警报灯（CRT为严重警报，MNR为次要警报），灯亮后就该去查看事件日志了，
里面有详细出错说明