Manual

Installing System Components 155
8 If applicable, install the front bezel. See "Installing the Front Bezel" on
page 83.
9 Reconnect the system to its electrical outlet and turn the system on,
including any attached peripherals.
System Board Assembly
The system board assembly is divided into two boards which are
interconnected by a high-speed connector.
• Processor board — has the connectors for the memory modules, power
supplies, and processors.
• I/O board — has the connectors for expansion-card risers and expansion
card.
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.
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 84.
3 Remove the cooling shroud. See "Removing the Cooling Shroud" on
page 96.
4 If installed, remove the front bezel. See "Removing the Front Bezel" on
page 83.
5 Slide the front-chassis assembly away from the system. See "Front-Chassis
Assembly" on page 98.
book.book Page 155 Thursday, February 18, 2010 2:06 PM