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4–18 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. Hard drive (see “Hard drive” on page 4-8)
b. Memory module (see “Memory module” on page 4-10)
c. WLAN module (see “WLAN module” on page 4-12)
d. Optical drive (see “Optical drive” on page 4-14)
e. Keyboard (see “Keyboard” on page 4-16)
Description Spare part number
Top cover (includes caps lock light, capacitive board, TouchPad, and TouchPad cable) 493962-001