6.3 Removing a hot-plug power supply unit
I Note for servers using CMA (Cable Management Arm)
Regarding of removing power supply units, additional tasks are needed, 
due to an interference between CMA stopper and the power supply units.
Ê Unlock the CMA stopper.
Ê Remove the CMA stopper with the mounted crossbar.
Ê Support the CMA stopper, the crossbar and the CMA including cables 
with your right hand.
Ê Remove the power supply unit and install a dummy cover into the 
empty bay.
Ê Remount the complete assembly (CMA stopper, crossbar and CMA) 
into the rail.
6.3.1 Preliminary steps
Ê "Locating the defective server" on page 51
Ê Remove the power cord from the dedicated power supply unit as described 
in section "Disconnecting power cords" on page 54
Customer Replaceable Unit
(CRU)
Hardware: 5 minutes
Tools: tool-less