Top cover
Description Spare part number
Top cover (includes TouchPad) 577926-001
Before removing the top cover, follow these steps:
1. Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device
on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the device.
3. Disconnect the power from the device by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the device.
4. Remove the battery (see
Battery on page 32).
5. If your device has WWAN capability, remove the SIM (see
SIM on page 33).
6. Remove the memory module (see
Memory module on page 34).
7. Remove the keyboard (see
Keyboard on page 36).
8. Remove the hard drive (see
Hard drive on page 39).
Remove the top cover:
1. Turn the device upside down, with the front toward you.
2. Use a thin, flat tool to release the 4 rubber device feet.
3. Remove the 4 Torx T8 2.5×5.0 screws (1), and the 4 Phillips PM2.0×3.0 screws (2) that secure the
top cover to the base enclosure.
4. Turn the device right-side up, with the front toward you.
5. Open the device as far as possible.
6. Release the ZIF connector (1) that connects the button board cable to the system board.
44 Chapter 4 Removal and replacement procedures
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