Removal and Replacement Procedures
3–15
3.3.5.2
Replacing the Fan Assembly
To replace the fan assembly, refer to Figure 3–6 and follow these steps:
1. Make sure that power is removed from the bridge and the interface cables are
disconnected (Section 3.2).
2. Make sure the ESD ground strap is attached.
3. Place the fan assembly in the side of the card cage, and align it so that the
tabs in the bottom of the fan assembly fit into corresponding slots in the bot-
tom of the card cage.
4. Tighten the two captive screws that hold the fan assembly in place.
5. Plug the fan assembly connectors, P1 and P2, into power supply connectors
J1 and J2.
6. Place the card cage back into the bridge enclosure and tighten the two quar-
ter-turn fasteners (Section 3.3.3.2).
7. Connect the interface cables, then the power cord (Section 3.2).
8. Wait for self-test to complete and check the state of the LEDs to ensure that
the unit is operational (Section 2.2).
3.3.6
Removing and Replacing the Backplane
To gain access to the backplane, you must first remove the card cage from the bridge
enclosure. Before beginning this procedure, remove power from the bridge and dis-
connect the interface cables (Section 3.2) and attach the ESD ground strap.
WARNING
!
Lethal exposed voltages exist in the power supply.
Therefore, always disconnect the ac power cord be-
fore removing or replacing any FRUs. Do not apply
power to the bridge unless the card cage is fully inserted
in the bridge enclosure. Only qualified service engi-
neers should perform any FRU removal and replace-
ment procedures.
