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 following components:
a. Battery (see
Battery on page 38).
b. Bottom door (see
Bottom door on page 39).
c. Hard drive (see
Hard drive on page 43)
d. Optical drive (see
Optical drive on page 40)
e. Memory (see
Memory modules on page 45)
f. WLAN module (see
WLAN/Bluetooth combo card on page 47)
g. Keyboard (see
Keyboard on page 49)
h. Metal heat shield (see
Metal heat shield on page 51)
i. Fan (see
Fan on page 52)
j. Top cover (see
Top cover on page 53)
Remove the USB module.
1. Position the top cover in the normal upright position with the lid in the open position.
2. Disconnect the USB cable (1) from the system board.
3. Remove the cable (2) from the base enclosure.
4. Remove the 2 screws (3) that secure the USB module.
5. Lift the module (4) from the system board.
Reverse this procedure to install the USB module.
64 Chapter 4 Removal and replacement procedures
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