Dell PowerEdge 2850 - Manual (Page 10)

Installing the System Board
1. Lower the system-board tray until the tray sits flat on the bottom of the chassis.
2. Ensure that all 17 system-board securing tabs are fully inserted into the 17 system-board securing slots. See Figure 1 -7 .
3. Slide the system-board tray toward the back of the chassis until it locks into position.
4. Replace the front-fan tray:
a. Place the three front-fan tray securing slots over the three securing posts. See Figure 1 -6 .
b. Slide the front-fan tray to the left until it locks into position.
5. Raise the drive-bay retraction bar and swing it toward the back of the chassis until it is completely flush with the top of the drive cage.
6. Replace the heatsink(s) and microprocessor(s).
7. Replace the front fans.
8. If applicable, replace the RAID key.
9. Replace the memory modules and the memory module cover.
10. If applicable, replace the RAC card.
11. Replace the back-fan tray and the back fans.
12. Replace the expansion-card cage.
13. Connect any cables to the system board.
14. Close the system.
15. If applicable, install the bezel.
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.