Dell PowerEdge 6600 - Manual (Page 51)

1. Lower the fan into the fan assembly until the fan snaps into position (see Figure 6 -2 ).
2. Rotate the handle down into the installed position.
3. Slide the back cover forward.
4. Tighten the thumbscrew that secures the back cover to the chassis (see " Replacing the Back Cover " in "Troubleshooting Your System").
Power Supplies
The system includes three hot-pluggable power supplies.
Removing a Power Supply
1. Squeeze the power-supply handle's release tab and rotate the handle down (see Figure 6 -3 ).
2. Remove the power supply by pulling the power supply straight out to clear the chassis (see Figure 6 -3 ).
Figure 6-3. Removing and Replacing Power Supplies
Replacing a Power Supply
1. Slide the new power supply into the chassis (see Figure 6 -3 ).
2. Rotate the power supply handle up until it snaps into place, securing the power supply to the chassis.
AC Power Module
Your system can operate with an AC module or an integrated redundant AC power module. The AC module is used when a redundant AC power source is not
required. The integrated redundant AC power module enables your system to use two AC inputs. Your system can operate on either of these inputs and
automatically switches from a failing AC power source. Both of these modules are removed and replaced using the same procedure.
Removing the AC Power Module
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Loosen the thumbscrew that secures the AC power module to the chassis.
3. Remove the AC power module by grasping the handle and pulling the module straight out to clear the chassis (see Figure 6 -4 ).
Figure 6-4. Removing and Replacing the AC Power Module
NOTICE: The power supplies are hot-pluggable. The system requires two power supplies to be installed for the system to operate normally. The system
is in the redundant mode when all three power supplies are installed. Remove and replace only one power supply at a time in a system that is powered
on.