Removal and Replacement Procedures
3–13
4. Use the plastic handles on each side of the power supply module to push (or
pull) the module into the backplane connector. You may find it easier to ori-
ent the unit so that the backplane is towards you, and then pull the power sup-
ply module into the backplane connector, rather than push it in.
5. Line up the screw holes in the power supply module with the corresponding
tapped holes in the card cage, and replace the seven screws that secure the
module in place.
6. Plug the two fan assembly connectors, P1 and P2, into power supply connec-
tors J1 and J2.
7. Plug the ac input connector P3 from the line filter and circuit breaker into J3
on the power supply module.
8. Replace the card cage back into the bridge enclosure and tighten both quar-
ter-turn fasteners (Section 3.3.3.2).
9. Connect the interface cables, then the power cord (Section 3.2).
10. Wait for self-test to complete and check the state of the LEDs to ensure that
the unit is operational (Section 2.2).
3.3.5
Removing and Replacing the Fan Assembly
The fan assembly is located on the left side of the card cage. In case of a fan failure,
replace the entire fan assembly (which includes both fans). To gain access to the fan
assembly, you must first remove the card cage from the bridge enclosure. Before be-
ginning this procedure, remove power from the bridge and disconnect 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.
