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Lid switch
Description Spare part number
Lid switch board (includes cable) 642765-001
Before removing the lid switch, 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 63).
5. Remove the following components:
a. Remove the bottom door (see
Bottom door on page 70).
b. Hard drive (see
Hard drive on page 76)
c. Optical drive (see
Optical drive on page 72)
d. WLAN module (see
WLAN module on page 83)
e. WWAN module (see
WWAN module on page 81)
f. Fan (see
Fan on page 90)
g. Heat sink (see
Heat sink on page 91)
h. Modem module (see
Modem module on page 89)
i. Keyboard (see
Keyboard on page 96)
j. Bottom cover (see
Bottom cover on page 98)
Remove the lid switch:
1. Position the computer right-side up, with the front toward you.
104 Chapter 4 Removal and replacement procedures