IBM MTM 2145-12F, Hardware Installation Manual

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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 74
through step 4 on page 75 in “Moving the cable management arms” on page 73.
However, you might need to remove a CMA assembly from the 2145-92F
expansion enclosures. To do so, complete step 1 on page 72 through step 8 on page
73 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 62 on page 72 shows the connectors on the upper CMA
assembly.
svc01017
Figure 61. Upper and lower cable-management arms
Chapter 4. Installing an optional 5U SAS expansion enclosure
71