Top cover
Description Spare part number
Top cover (includes TouchPad board) 620605-001
Before removing the top cover:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on
the computer, 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 following components:
a. Battery (see Battery on page 36).
b. Hard drive cover (see Hard drive on page 37).
c. WLAN module (see WLAN module on page 42).
d. Keyboard (see Keyboard on page 46).
Remove the top cover:
1. Position the computer upside down, with the front toward you.
2. Remove four Phillips 2.0×3.0 screws in the battery bay, and remove ten Phillips 2.0×6.5 screws
on the base enclosure. The top cover screws are identified by a triangle icon embossed on the
base enclosure.
3. Postion the computer right-side up, with the front toward you.
4. Open the computer as far as possible.
Component replacement procedures 49