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Before removing the system board, follow these steps:
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 45).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 51)
b. Optical drive (see
Optical drive on page 47)
c. Keyboard (see
Keyboard on page 61)
d. Switch cover (see
Switch cover on page 66)
e. Display assembly (see
Display assembly on page 69)
f. Top cover (see
Top cover on page 76)
g. Fan (see
Fan on page 81)
h. Heat sink (see
Heat sink on page 83)
i. Speaker assembly (see
Speaker assembly on page 89)
j. Modem module (see
Modem module on page 64)
When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
●
SIM (see
SIM on page 46)
●
Memory module (see
Memory modules on page 57)
●
WLAN module (see
WLAN module on page 65)
●
WWAN module (see
WWAN module on page 59)
●
Processor (see
Processor on page 86)
●
Graphics card (see
Graphics card on page 87)
●
ExpressCard assembly (see
ExpressCard assembly on page 94)
Remove the system board:
1. Position the computer right-side up, with the front toward you.
Component replacement procedures 91