USB board
Description Spare part number
USB 2.0 board 646360-001
Before removing the USB 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 46).
5. Remove the following components:
a. Bottom door (see
Bottom door on page 48).
b. Hard drive (see
Hard drive on page 51)
c. Optical drive (see
Optical drive on page 49)
d. WLAN module (see
WLAN/Bluetooth combo card on page 57)
e. WWAN module (see
WWAN module on page 55)
f. Fan (see
Fan on page 65)
g. Heat sink (see
Heat sink on page 67)
h. Keyboard (see
Keyboard on page 62)
i. Top cover (see
Top cover on page 69)
Remove the USB board:
1. Position the computer upright with the front toward you.
2. Disconnect the USB board cable from the system board (1).
3. Remove the Phillips PM2.5×4.0 screw (2) that secures the USB board to the computer.
4. Remove the tape (3) that secures the cable to the computer.
Component replacement procedures
89
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