Installing or replacing a fan interface board

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You can replace a fan interface board (FIB) in a 5U expansion enclosure.

Before you begin

This task assumes that the following conditions are met:

About this task

The 5U 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 expansion enclosure.

Procedure

  1. Assemble the new FIB, cover, and the cover screws (shown in Figure 1) in a safe location.
    Figure 1. FIB parts for the chassis
    FIB parts
  2. Carefully insert the new FIB into the expansion enclosure chassis, as shown in Figure 2.
    Figure 2. Insert the new FIB in the chassis
    Insert the FIB
  3. Use a cross head screwdriver to tighten the retaining screws that secure the FIB to the drive board, as shown in Figure 3.
    Figure 3. Secure the FIB to the drive board
    Secure the FIB to the drive board
  4. If needed, repeat steps 2 and 3 to replace the other FIB.
  5. Replace the narrow metal cover, which is shown in Figure 4, over the FIB assemblies. The attachment screws are on each side of the chassis.
    Figure 4. Replace the FIB cover
    Replace the FIB cover
  6. Place the enclosure back in the rack, as described in Installing a 5U expansion enclosure in a rack
  7. Replace each of the fan modules. Follow the procedure that is described in Installing or replacing a fan module.
  8. Replace the drives, secondary expander modules, and other heavy FRUs that were removed before the enclosure was removed from the rack.
  9. Replace the top cover, as described in Installing or replacing the top cover.
  10. Reconnect power to the enclosure, as described in Powering on the optional 5U expansion enclosure.