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3 Hardware configuration
60
To install the mainboard
1 With the rear of the electronics bay closest to you and the
mainboard oriented so that the I/O connectors line up with the
cutout in the back left of the chassis (Figure 25), lower the right
end of the mainboard into the electronics bay and slip the board
edge into the slots of the foam panel (Figure 25, B).
2 Lower the other end of the mainboard to the floor of the
electronics bay and slide it toward the back of the chassis until:
a The I/O connectors fit all of the way into the I/O connector
openings.
b The six mounting holes on the mainboard (Figure 25, B) are
aligned with their corresponding threaded standoffs in the
floor of the electronics bay.
3 Install the processor board mounting brackets and processor-side
plastic overlay as follows:
a Align the processor board mounting bracket for the center of
the mainboard with the three mounting holes. Insert a screw
through each of the holes and partially thread the screws into
the standoffs.
b Align the other mounting bracket along the edge of the
board. Align the plastic overlay with the bracket and the two
plastic studs. Insert a screw through each of the holes in the
overlay and mounting bracket and partially thread the screws
into the standoffs.
c Adjust the board position as needed and tighten the six
screws.
4 Install the plastic protective overlay covering the PCI area of the
board as follows:
a At the side of the electronics bay where the edge of the
mainboard is inserted into the foam, place the two slots in the
overlay over the hooked tabs (Figure 24, C on page 58).
b Slide the overlay toward the rear of the chassis to hook the
tabs in the slots.
c Carefully fit the overlay around the mainboard connectors
and down against the board.
d Tighten the captive screw that holds the overlay in place.
5 Install the front retention mechanism for the PCI add-in cards on
the front wall of the electronics bay (Figure 24 on page 58).
AA G900 ug - EN.book Page 60 Wednesday, September 25, 2002 5:23 PM