168 Installing System Components
System Board

Removing the System Board

CAUTION: Many repairs may only be done by a certified service technician.
Youshould only perform troubleshooting and simple repairs as authorized in
yourproduct documentation, or as directed by the online or telephone service
andsupport 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
withthe product.
CAUTION: If you are using the Trusted Program Module (TPM) with an encryption
key, you may be prompted to create a recovery key during program or system
setup. Be sure to create and safely store this recovery key. If you replace this
system board, you must supply the recovery key when you restart your system or
program before you can access the encrypted data on your hard drives.
1
Turn off the system and attached peripherals, and disconnect the system
from the electrical outlet.
2
Open the system. See "Opening the System" on page 89.
3
If applicable, remove the memory-riser blanks. See "Removing a Memory-
Riser Blank" on page 99.
4
Remove the memory risers. See "Removing a Memory Riser" on page100.
5
Remove the cooling fan assembly. See "Removing the Cooling Fan
Assembly" on page118.
6
Remove the power supply(s). See "Removing a Power Supply" on page155.
7
Remove all expansion cards, the I/O card, and the integrated storage
controller card. See "Removing an Expansion Card" on page128,
"Removing the I/O Card" on page134, and "Removing the Integrated
Storage Controller Card" on page143.
8
If applicable, remove the USB key from the system board. See "Internal
USB Memory Key" on page120.
9
If applicable, remove the NIC hardware key from the system board. See
"Integrated NIC Hardware Key" on page123.
10
Remove the processor(s). See "Removing a Processor" on page148.
11
Remove the power distribution board. See "Removing the Power
Distribution Board" on page161.
book.book Page 168 Wednesday, January 20, 2010 10:20 AM