1. Installing Internal Optional DevicesExpress5800/R120d-2E User’s Guide92Chapter 2 Preparations1.16.2 Replacement or RemovalTo remove the redundant fan unit, reverse the installation procedure.The redundant fan unit can be replaced while the server is powered on (hot swappable).You can identify the failing fan by using the management tool such as EXPRESSSCOPE Engine 3.While the system is powered-on or running, the LED of failed fan unit is lit.CAUTIONBe sure to observe the following precautions to use the server safely. Failure toobserve the precautions may cause burns, injury, and property damage. Fordetails, refer to Safety precautions in Precautions for Use.• Pay attention to electric hazard.
