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Before removing the processor, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 67), and then remove the following components:
a. Service cover (see
Service cover on page 69)
b. Hard drive (see
Hard drive on page 75)
c. Optical drive (see
Hard drive on page 75)
d. WLAN module (see
WLAN module on page 81)
e. WWAN module (see
WWAN module on page 79)
f. Fan (see
Fan on page 85)
g. Keyboard (see
Keyboard on page 86)
h. Base enclosure (see
Base enclosure on page 91)
i. System board (see
System board on page 107)
j. Heat sink (see
System board on page 107)
Remove the processor:
1. Use a flat-bladed screw driver (1) to turn the processor locking screw one-half turn
counterclockwise, until you hear a click.
Component replacement procedures 115