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CHAPTER 3: Replacing notebook components
74
6 Remove the old processor from the system board.
7 Install the new processor onto the system board making 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 use a flat-blade
screwdriver to turn the processor lock screw 1/4-turn clockwise.
8 Remove any thermal grease residue from the cooling assembly using a soft
cloth and isopropyl alcohol.
9 Place new thermal grease on the processor. Use only enough to cover the
CPU die.
10 Optional: For discrete models, place new thermal grease on the VGA chip
on the VGA board. Use only enough to cover the VGA die.
11 Make sure a thermal pad is placed between the cooling assembly and other
components.
12 Replace the cooling assembly by following the instructions in “Replacing the
thermal module” on page 70.
13 Replace the bay cover, then tighten the cover screws.