Dell PowerVault 745N - Manual (Page 55)

Installing the Fan Assembly
1. Align the holes in the fan assembly with the three fan assembly securing posts.
2. Lower the fan assembly until the release levers snap onto the securing posts.
3. Re-engage the three forward-facing snaps.
4. Install the power distribution board. See " Installing the Power Distribution Board ."
5. Reconnect data and power connector cable to the hard drives.
6. Reconnect the fan assembly power cable to the connector on the system board. See Figure 6 -4 .
7. Install the cooling shroud. See " Installing the Cooling Shroud ."
8. Close the system. See " Closing the System " in "Troubleshooting Your System."
Power Distribution Board
The system supports a power distribution board, which distributes power from the power supply to the hard drives.
Removing the Power Distribution Board
1. Open the system. See " Opening the System " in Troubleshooting Your System."
2. Disconnect the hard drive connectors and power supply connectors from the power distribution board. See Figure 6 -5 .
3. Using a #2 Phillips screwdriver, remove the four screws that secure the power distribution board.
4. Lift the power distribution board out of the system.
Installing the Power Distribution Board
1. Align the the four holes in the power distribution board with four mounting posts near the cooling fan.
2. Using a #2 Phillips screwdriver, install the four screws that secure the power distribution board.
3. Reconnect the connectors from the hard drives and the power supply to the power distribution board.
4. Close the system. See " Closing the System " in "Troubleshooting Your System."
Figure 6-5. Removing the Power Distribution Board
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.