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Top cover
Description Spare part number
Top cover (includes TouchPad, TouchPad cable, fingerprint reader board, and fingerprint reader
board cable)
451723-001
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 41).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 52)
b. Optical drive (see
Optical drive on page 56)
c. Switch cover (see
Switch cover on page 57)
d. Keyboard (see
Keyboard on page 59)
e. Display assembly (see
Display assembly on page 62)
Remove the top cover:
1. Turn the computer upside down, with the front toward you.
Component replacement procedures 67