IBM 5U92, Manual

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9. To reinstall or return the expansion enclosure in the rack, follow the procedure in “Installing or
replacing a 5U92 disk enclosure in a rack ” on page 29.
Removing or moving the cable-management arm
You might need to move the cable-management arm (CMA) aside to complete service tasks. If needed,
you can also remove the CMA from the 5U expansion enclosure.
About this task
The cable management arm (CMA) consists of an upper and lower arm assembly, as Figure 72 on page
77 shows. The upper and lower are independent of each other. They can be installed, moved, or
removed from the enclosure individually.
Figure 72. Upper and lower cable-management arms
To complete many service tasks, you can swing the CMA assemblies away from the expansion enclosure.
You do not have to completely remove the CMA assemblies from the enclosure. For these service tasks,
complete step “1” on page 80 through step “4” on page 81 in “Moving the cable management arms”
on page 79.
However, you might need to remove a CMA assembly from the 5U expansion enclosures. To do so,
complete step “1” on page 78 through step “8” on page 79 in following procedure.
Procedure
Remove the upper CMA assembly
The connectors of the CMA are installed on the rail hooks at the end of the support rails. Figure 73 on
page 78 shows the connectors on the upper CMA assembly.
Chapter 3. Maintaining the system hardware 77