Dell PowerEdge NM176 Hardware Owner's Manual page 92

8 Remove all PCI expansion cards installed on the riser card. See "Removing
an Expansion Card" on page 78.
9 Remove the riser card. See "Removing the Riser Card" on page 79.
10 Disconnect the chassis intrusion cable from the INTRUSION_SWITCH
connector on the system board.
11 Disconnect the two power cables from the 12V and PWR_CONN
connectors on the system board. See Figure 6-2.
12 Pull up on the plunger that secures the system board tray to the chassis
floor. See Figure 3-21.
13 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 3-21.
14 Lay the system board tray down on a smooth, nonconductive work surface.
92
Installing System Components