1. Shut down 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 all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 42).
5. Remove the following components:
a. Service doors (see
Service door on page 43).
b. Hard drive (see
Hard drive on page 45)
c. Optical drive (see
Optical drive on page 49)
d. Keyboard (see
Keyboard on page 55)
e. Top cover (see
Top cover on page 58)
When replacing the system board, be sure to remove the following components from the defective system
board and install on the replacement system board:
●
Memory modules (see
Memory modules on page 47)
●
WLAN/Bluetooth module (see
WLAN/Bluetooth combo card on page 51)
●
WWAN module (see
WWAN module on page 53)
Remove the system board:
1. Position the computer upright with the front toward you.
80 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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