Quick Reference Guide

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10 Lift the processor retention bracket, then remove the
processor from the system board.
11 Install the new processor onto the system board. Make
sure that Pin 1 on the processor (indicated by the
printed triangle on the corner of the processor) aligns
with Pin 1 on the processor socket (indicated by a
triangle molded into the corner of the processor socket),
then return the retention bracket and lever to their
locked positions.
12 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 half a pea) to
the surface that contacts the processor.
13 Place the heat sink on the processor, then tighten the
four screws that secure it to the system board.
14 Slide the heat sink fan back into place over the heat sink,
then plug it into the system board.
15 Insert the hard drive cage back into the computer.
16 Press the optical and 3.5-inch drive cage down until it
clicks into place, then reinstall the drives you removed.
17 Replace the side panel by following the instructions in
“Opening and closing the case” on page 39.
8512138.book Page 61 Friday, March 16, 2007 4:33 PM