Removal and Replacement Procedures
3–11
3. Firmly grasping each side of the card cage, align the runners on the card cage
bottom with the guides in the bridge enclosure. Then, carefully push the card-
cage into the enclosure.
4. Tighten the two quarter-turn fasteners to lock the card cage in place.
5. Connect the interface cables, then the power cord (Section 3.2).
6. Wait for self-test to complete and check the state of the LEDs to ensure that
the unit is working properly (Section 2.2).
3.3.4
Removing and Replacing the Power Supply
The power supply module is located at the top of the card cage. Before removing the
power supply module, first remove power from the bridge, disconnect the interface
cables (Section 3.2), and attach the ESD ground strap. Then, remove the card cage
from the bridge enclosure (Section 3.3.3.1).
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.
3.3.4.1
Removing the Power Supply
To remove the power supply module, refer to Figure 3–5 and follow these steps:
1. Remove the card cage from the bridge enclosure (Section 3.3.3.1).
2. Disconnect the ac input connector that plugs into P3 on the power supply
module.
3. Disconnect the fan assembly connectors that plug into J1 and J2 on the power
supply module.
4. Remove the seven screws that secure the power supply module to the card
cage. Place the screws nearby for use when replacing the power supply.
