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Top cover
Description Spare part number
Top cover 686097–001
690198–001
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 display panel (see
Display panel on page 32).
5. Remove the base enclosure (see
Base enclosure on page 34).
6. Disconnect the battery cable (see
Battery on page 36).
Remove the top cover:
1. Turn the computer right-side up, with the front toward you.
2. Open the computer.
3. Remove the 3 screws from each hinge on the top cover (1), and then remove the top cover (2).
Reverse this procedure to install the top cover.
WLAN antenna cables
Description Spare part numbers
WLAN antennas 686589–001
66 Chapter 4 Removal and replacement procedures