Line Replaceable Modules (LRM)

The innovative LRM approach promises to greatly reduce the logistics burden by removing and replacing modules such as pluggable processing and I/O boards directly at the platform; this eliminates the traditional step of first removing the system-level "black box" and sending it back to a depot for the eventual replacement of a pluggable circuit board. By designing a system around the concept of LRMs, and holding spares at the LRM level instead of at the box level, the cost, volume, and weight of spares holdings can be reduced. LRM design considerations include ESD protection, mechanical protection, fault diagnosis/isolation, LRM insertion and replacement, cooling, and handling sensitive data.