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v The expansion enclosure is removed from the rack, as described in "Removing
v A lift is supporting the weight of the enclosure.
v The top cover, fans, drives, and other heavy FRUs are removed from the
About this task
The 2076-92F expansion enclosure contains two fan interface boards (FIBs). The
FIBs act as the interface between the fans and the system drive board. FIB 1
connects fan modules 1 and 2 to the drive board; FIB 2 connects fan modules 3
and 4. If the fault LED on each fan module is lit, it is possible that the FIB that
controls those modules needs to be replaced. You can also issue the
lsenclosurefanmodule command to display the status of the fans.
If you removed the FIBs from a faulty expansion enclosure, you must reinstall
them in the replacement enclosure. Refer to the procedure described in "Replacing
an enclosure: 2076-92F" on page 114.
Procedure
Figure 85. FIB parts for the chassis
an expansion enclosure from a rack: 2076-92F" on page 89.
enclosure.
1. Assemble the new FIB, cover, and the cover screws (shown in Figure 85) in a
safe location.
2. Carefully insert the new FIB into the expansion enclosure chassis, as shown in
Figure 86 on page 88.
Chapter 2. Installing the system hardware
87
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