A fibre host card in the storage facility has detected and reported a loss of light from an attached host system. When a storage facility fibre host card detects a loss of light, the problem is normally external to the storage facility. This is reported to the host system as a status condition. A serviceable event is not created for this condition. A separate serviceable event will be created if the fibre host card detects an internal operational error.
Customer disruption can occur if microcode and power boundaries are not in the proper conditions for this service action. Verify that you start all service activities in Start here.