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Installing System Components 119
Removing 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. See your Product
Information Guide for complete information about safety precautions, working
inside the computer, and protecting against electrostatic discharge.
1
Turn off the system and attached peripherals, and disconnect the system
from the electrical outlet. Open the system. See "Opening and Closing the
System" on page 68.
2
Remove the system board cooling shroud. See "Removing the System
Board Shroud" on page 71.
3
Remove the heat sink and processor. See "Replacing the Processor" on
page 106.
4
Remove the memory modules. See "Removing Memory Modules" on
page 106.
NOTE: As you remove the memory modules, record the memory-module
socket locations to ensure proper installation.
5
Disconnect the control-panel interface cable from the CTRL_PNL
connector on the system board. See Figure 6-1.
6
Disconnect the internal USB key cable from the connector USB_CONN
on the system board. See Figure 6-1 and see "Internal USB Memory Key"
on page 90.
7
Disconnect the power distribution board 12C cable from the connector
PDB_12C on the system board. See Figure 6-1 and see "Removing the
Power Distribution Board" on page 116.
8
Disconnect the hard-drive interface cables:
Disconnect the SATA cables from the hard drives and the optical drives (if
applicable) from the SATA_A, SATA_B, and SATA_C connectors.
9
Disconnect the two fan module assemblies (1 and 2 , 3 and 4) from the fan
FAN_MOD1 and FAN_MOD2 connectors on the system board.
10
Remove all expansion cards installed on the riser card. See "Removing an
Expansion Card" on page 96.
11
Remove the riser cards. See "Removing the Riser Card" on page 98.
12
Disconnect the two power cables from the 12V and PWR_CONN
connectors on the system board. See Figure 6-1.