Skip to main content

12.1 Before Maintaining a Crossbar Unit


12.1 Before Maintaining a Crossbar Unit
This chapter only has descriptions of the crossbar unit configuration and the work of removing and installing crossbar units.
Before removing a FRU, see "Chapter 7 Maintenance Flow" and perform the necessary work items.
For the types of maintenance on crossbar units, also see "Crossbar unit" in "Table 7-2 Types of Maintenance That Can be Applied to Each Crossbar Box FRU."