Dell PowerEdge 850 - Manual (Page 136)

Installing the System Board Assembly
1. Unpack the new system board assembly.
2. Align the system board tray so that the tabs on the chassis floor slide into the notches in the system board tray.
3. Slide the system board tray backward until it stops.
4. Using a #2 Phillips screwdriver, tighten the screw that secures the system board tray to the chassis. See Figure 7 -3 .
5. Install the fan module. See " Installing the Fan Assembly " in "Installing System Components."
6. Connect the two power cables to the 12V and PWR_CONN connectors on the system board. See Figure A -3 .
7. Connect the chassis intrusion cable to the INTRUSION_SWITCH connector on the system board.
8. Install the riser card. See " Installing the Riser Card " in "Installing System Components."
9. Using a #2 Phillips screwdriver, tighten the two screws that secure the riser card to the system board.
10. Install any PCI expansion cards that you removed. See " Installing an Expansion Card " in "Installing System Components."
11. Connect the hard-drive interface cables:
a. If SCSI hard drives are installed, connect the interface cable to the PCI controller card.
b. If SATA hard drives are installed, connect the interface cable to the SATA_0 and SATA_1 connectors on the daughter card. See Figure A -3 .
12. Install the processor and heat sink. See " Replacing the Processor " in "Installing System Components."
13. Install the memory modules. See " Installing Memory Modules " in "Installing System Components."
14. Connect the two control-panel interface cables to the FRONT_PANEL connector on the system board and the USB_CONN connector on the daughter
card. See
Figure A -3 .
15. If applicable, connect the optical drive interface cable to the PRI_IDE1 connector on the daughter card. See Figure A -3 .
16. Install the cooling shroud. See " Replacing the Processor " in "Installing System Components."
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.
NOTE: Install the memory modules as noted in step 4 of the procedure in "Removing the System Board Assembly."