Compaq H9A11 Network Card User Manual


 
Installation
2–16
H9A11 Cabinet Installation/Owner's Guide
2.5.4
Removing and Replacing the Power Distribution Unit
_______________________ WARNING__________________________
There can be one or more PDUs per cabinet. Ensure that all systems installed
in the cabinet are turned off as described in the system documentation before
performing the following procedure.
___________________________________________________________
To remove a power distribution unit, refer to Figure 2-7 and proceed as follows:
Removal
1.
If the cabinet contains an operating system, turn off the system as described in the
system documentation.
2.
Remove the two Phillips-head screws that secure the rear lift-off door to the two
brackets at the top rear of the cabinet, and lift the door off of the cabinet (refer to
Section 2.5.1).
3.
Set the Main Power switch on all power distribution units to the off (O) position.
4.
Disconnect the power distribution units from the ac power source.
5.
Remove the bottom front filler panel (refer to Section 2.5.2). This provides access to the
ac outlets on the power distribution units.
6.
Note and record the power cord connections to the outlets at the rear of the failed
power distribution unit. Then unplug the power cords from that power distribution unit.
7.
At the rear of the cabinet, remove the four (4) 10-32 truss-head screws that secure the
power distribution unit to the rear rails (via the four (4) 10-32 clip nuts .
8.
Pull out the power distribution unit and remove it from the cabinet.
Replacement
To replace a power distribution unit, reverse the removal procedure, steps 2 through 8, then
follow the power-on procedure in the system documentation.