Dell PowerEdge 850 - Manual (Page 119)

13. To test the newly installed battery, see " Troubleshooting the System Battery " in "Troubleshooting Your System."
Fan Assembly
The fan assembly contains two fans and provides cooling for the processor and memory modules.
Removing the Fan Assembly
1. Open the system. See " Opening the System " in "Troubleshooting Your System."
2. Remove the cooling shroud. See " Removing the Cooling Shroud ."
3. Disconnect the fan assembly's power cable from the system board. See Figure 5 -3 .
4. Disconnect the PCI fan cable from the fan assembly connector, if present.
5. Remove the data cable from hard drive 1 if installed. See Figure 5 -3 .
6. Pull the cables out of the fan assembly's cable tray. See Figure 5 -3 .
7. While pressing the two release levers on the fan assembly, lift the fan assembly off of the two securing posts and out of the chassis. See Figure 5 -3 .
Figure 5-3. Installing and Removing the Fan Assembly
Installing the Fan Assembly
1. Align the holes in the fan assembly with the two fan assembly securing posts. See Figure 5 -3 .
2. Lower the fan assembly until the release levers snap onto the securing posts.
3. Route the cables in the fan assembly cable tray. See Figure 5 -3 .
4. Reconnect the hard drive 1 data cable to the hard drive. See Figure 5 -3 .
5. Reconnect the PCI fan cable to the fan assembly connector, if applicable.
6. Reconnect the fan assembly power cable to the system board.
7. Install the cooling shroud. See " Installing the Cooling Shroud ."
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the
computer and protecting against electrostatic discharge.