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5 Push the processor release lever down, lift it completely
up, then lift the processor retention bracket.
6 Remove the processor from the system board.
7 Install the new processor onto the system board. Make
sure that Pin 1 on the processor (indicated by the
silk-screened arrow on the corner of the processor)
aligns with Pin 1 on the processor socket (indicated by
the absence of a pin hole in the processor socket), then
return the retention bracket and lever to their locked
position.
8 If this is a new heat sink, remove the strip on the heat
sink that covers the gray thermal grease. If you are
re-using a heat sink, use rubbing (isopropyl) alcohol to
remove the old thermal grease, then re-apply a small
bead of thermal grease (about the size of a pea) to the
surface that contacts the processor.
9 Place the heat sink and fan assembly on the processor,
then tighten the screws that secure it to the system
board.
10 Connect the heat sink fan cable to the system board.
11 Replace the side panel by following the instructions in
“Replacing the side panel” on page 36.
8513152.book Page 49 Wednesday, May 14, 2008 4:57 PM