Lenovo ThinkSystem SR650 Maintenance Manual page 33

When this LED is lit, it indicates that the server is powered on.
2 System ID LED
The blue system ID LED helps you to visually locate the server. A system ID LED is also located on the front
of the server. Each time you press the system ID button, the state of both the system ID LEDs changes. The
LEDs can be changed to on, blinking, or off. You can also use the Lenovo XClarity Controller or a remote
management program to change the state of the system ID LEDs to assist in visually locating the server
among other servers.
3 System error LED
When this yellow LED is lit, one or more LEDs elsewhere in the server might also be lit to direct you to the
source of the error. For more information, see "Front I/O assembly" on page 15.
4 DIMM error LEDs
When a DIMM error LED is lit, it indicates that the corresponding DIMM has failed.
5 6 7 8 9 10 Fan error LEDs
When a fan error LED is lit, it indicates that the corresponding system fan is operating slowly or has failed.
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Chapter 2 Server components
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