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4–32 Maintenance and Service Guide
Removal and replacement procedures
Top cover
Before removing the top cover, 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 4-6).
5. Remove the following components:
a. Hard drive (see “Hard drive” on page 4-8)
b. Optical drive (see “Optical drive” on page 4-18)
c. Keyboard and switch cover (see “Keyboard and switch cover” on page 4-20)
d. Speaker (see “Speaker” on page 4-24)
e. Display assembly (see “Display assembly” on page 4-25)
Remove the top cover:
1. Turn the computer upside down with the front toward you.
2. Remove the six slotted Torx T8M2.5×8.0 screws 1 and the two Phillips PM2.0×2.0 broadhead screws 2 that
secure the top cover to the base enclosure.
Description Spare part number
Top cover (includes TouchPad on/off board and cable, TouchPad button board and cable, and
TouchPad board and cable)
538446-001