Dell Inspiron 660s (Early 2012) - Manual (Page 75)

System Board
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4 Compare the system board that you removed with the replacement system
board to ensure that they are identical.
NOTE:
Some components and connectors on the replacement system board
may be in different locations compared to the components and connectors on
the existing system board.
NOTE:
Jumper settings on the replacement system board is preset at the
factory.
Replacing the System Board
Procedure
1 Gently place the system board into the chassis and slide it toward the back
of the computer.
2 Replace the screws that secure the system board to the chassis.
3 Route and connect the cables that you disconnected from the connectors
on the system board.
NOTE:
For information on system board connectors, see "System Board
Components" on page 15.
Postrequisites
1 Replace the processor. See "Replacing the Processor" on page 64.
2 Replace the front bezel. See "Replacing the Front Bezel" on page 35.
3 Replace the fan shroud. See "Replacing the Fan Shroud" on page 20.
4 Replace the processor fan and heat-sink assembly. See "Replacing the
Processor Fan and Heat-Sink Assembly" on page 61.
5 Replace any PCI-Express cards, if applicable. See "Replacing the PCI-
Express Cards" on page 27.
6 Replace the Mini-Card, if applicable. See "Replacing the Mini-Card" on
page 31.
7 Replace the memory module(s). See "Replacing Memory Module(s)" on
page 23.
8 Replace the drive cage. See "Replacing the Drive Cage" on page 39.
book.book Page 71 Thursday, April 5, 2012 5:38 PM