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Installing System Components 121
NOTE: In the preceding figure, the 12C cable is shown connecting over the control
panel cabling. This cable should be routed under the control panel cable and the
internal USB key connector. The 12C cable seats in a cable guide clip that is directly
beneath the control panel connector.
Installing the System Board Assembly
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.
1
Unpack the new system board assembly.
2
While sliding the system board tray into place, tilt the board at an angle to
ensure that the cables from the power distribution board are above the
system board assembly.
3
Slide the system board into the chassis ensuring that no cable connectors
are under the system board assembly as you seat it in the chassis floor..
4
Slide the system board tray backward until it stops.
5
Press down on the plunger that secures the system board tray to the
chassis. See Figure 3-24.
6
Install the PDB 12C cable to the connector PDB_12C. See Figure 6-1 and
see "Replacing the Power Distribution Board" on page 118.
7
Install the internal USB key cable to the connector USB_CONN on the
system board. See Figure 6-1 and see "Installing the Optional Internal USB
Memory Key" on page 90.
8
Connect the two power cables to the 12V and PWR_CONN connectors on
the system board. See Figure 6-1.
9
Install the riser cards. See "Installing the Riser Card" on page 99.
10
Install all expansion cards in expansion-card left or center riser (RISER1 or
RISER2). See Figure 6-1 and see "Installing an Expansion Card" on
page 95.
11
Connect the hard-drive interface cables.
12
Connect the fan module cables to the FAN_MOD1 and FAN_MOD2
connectors on the system board. See "Installing the Fan Assembly" on
page 86.