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1 ThinkServer Management Module status LED
This LED indicates the ThinkServer Management Module (TMM) status of your server.
ThinkServer Management Module
status LED
Color
Description
On Green
The TMM is not ready.
Off
None
The TMM has no power or has failed.
Blinking
Green
The TMM is working.
2 - 9 System fan error LEDs
When a system fan error LED on the system board is lit, it indicates that the corresponding system fan is
operating too slowly or has failed. To solve the problem, you might need to reinstall or replace the system
fan. See “Replacing a system fan” on page 121. If it is a system board problem, contact the Lenovo
Customer Support Center.
Chapter 3. Product overview 41