System information

4–30 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 4-7).
5. Remove the following components:
a. Optical drive (see “Optical drive” on page 4-9)
b. Hard drive (see “Hard drive” on page 4-15)
c. Switch cover and keyboard (see “Switch cover and keyboard” on page 4-20)
d. 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 10 Phillips PM2.5×7.0 screws 1 that secure the top cover to the computer.
3. Remove the Phillips PM2.5×4.0 screw 2 that secures the top cover to the computer. This screw is in the battery
bay.
Description Spare part number
For use only with white computers equipped with a fingerprint reader 579159-001
For use only with white computers not equipped with a fingerprint reader 518108-001
For use only with black computers equipped with a fingerprint reader 579160-001
For use only with black computers not equipped with a fingerprint reader 518788-001