Dell POWEREDGE 840 Hardware Owner's Manual page 88

8 Disconnect the power cable(s) connected to the hard drives in the drive bay, or to the optional SAS
backplane.
9 Remove the screws securing the drive bay and remove the bay from the system.
10 Disconnect all remaining cables attached to the connectors on the system board:
• Optical-drive interface cable (PRIMARY_IDE connector)
• Diskette-drive cable (FDD connector)
• Control panel cable (FRONT_PANEL connector)
• Front fan cable (FRONT_FAN connector)
• Back fan cable (BACK_FAN connector)
• Any other cables attached to the system board, after recording their locations.
11 Remove the back fan. See "Removing the Back System Fan" on page 67 in "Installing System
Components."
12 Remove all PCI expansion cards from the expansion slots. See "Removing an Expansion Card" on
page 73.
13 Pull up on the system board plunger and slide the system board toward the front of the chassis about
2.5 cm (1 inch). See Figure 3-26.
14 Carefully lift the system board up and out of the chassis. See Figure 3-26.
88
Installing System Components