You do not have to power off the server to service fan modules.
You should not begin this procedure unless you have a replacement fan module and you are ready to install it right away.
Caution - Close the top cover fan assembly door within 60 seconds to maintain adequate airflow to properly cool the server. Leaving the door open for more than 60 seconds, while the server is running, will cause the server to automatically shut down.
Each fan module has a fan status indicator (LED) that is located next to the module. If the LED is amber, the fan has failed. The location of the fan status LED is shown in the following figure.
Caution - When removing a fan module, do not rock it back and forth. Rocking the fan module can cause damage to the motherboard connectors.
Caution - Do not service any other components in the fan compartment unless the system is shut down and the power cords are removed.
If you removed the fan assembly as part of another procedure, return to that procedure.
Otherwise, continue to Install a Fan Module.