Dell PowerEdge R300 - Manual (Page 120)

120
Installing System Components
Removing the System Board Assembly
CAUTION:
Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
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 70.
2 Remove the system board cooling shroud. See "Removing the System
Board Shroud" on page 72.
3 Remove the heat sink and processor. See "Replacing the Processor" on
page 107.
4 Remove the memory modules. See "Removing Memory Modules" on
page 107.
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 91.
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 117.
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 97.
11 Remove the riser cards. See "Removing the Riser Card" on page 99.
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