Dell 745N - page 77

Installing System Components 77
b While pressing down on the cover indention, slide the cover backward about an inch, and
grasp the cover on both sides.
c Carefully lift the cover away from the system.
5 Remove the cooling shroud.
6 Remove the heat sink and processor.
7 Remove the memory modules.
NOTE: After removing the memory modules, record the memory module socket locations to ensure
proper installation.
8
Disconnect the hard-drive interface cables from the appropriate card:
a If this is a software RAID or external storage configuration system, remove the cables
from the daughter card.
b If this is a hardware RAID system, remove the cables from the CERC SATA RAID
controller.
9 If this is a software RAID or external storage configuration system, remove the daughter card.
10 Disconnect the control panel interface cable from the J7 connector on the system board. See
Figure 6-16.
11 Remove all PCI expansion cards installed on the riser board.
12 Using a #2 Phillips screwdriver, loosen the two captive screws securing the riser board to the
system board.
13 Disconnect the riser board from the system board card-edge connector.
14 Remove the fan assembly.
15 Remove the power supply.
16 Using a #2 Phillips screwdriver, loosen the captive screw that secures the system board tray to
the chassis floor. See Figure 6-16.
17 Using the tab on the system board tray, slide the system board forward, toward the front of
the system and lift the assembly up and out of the chassis. See Figure 6-16.
18 Lay the system board tray down on a smooth, non-conductive work surface.
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