Dell PowerEdge 2850 - Manual (Page 7)

11. If applicable, replace the optical drive.
12. Close the system.
13. If applicable, install the bezel.
Back-Fan Tray
Removing the Back-Fan Tray
1. If applicable, remove the bezel:
a. Use the system key to unlock the bezel.
b. Press the tab at the left end of the bezel.
c. Rotate the left end of the bezel away from the system to release the right end of the bezel.
d. Pull the bezel away from the system.
2. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
3. Open the system:
a. Loosen the two thumbscrews that secure the cover to the chassis.
b. Slide the top cover backward and grasp the cover at both sides.
c. Carefully lift the cover away from the system.
4. Remove the two back fans.
5. Press the fan-tray release tab. See Figure 1 -4 .
6. Lift the fan tray straight up and out of the system.
Figure 1-4. Removing the Back Fan Tray
Installing the Back-Fan Tray
1. Align the fan-tray alignment slot with the alignment tab on the side of the chassis wall. See Figure 1 -5 .
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See
your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against
electrostatic discharge.