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4–28 Maintenance and Service Guide
Removal and replacement procedures
Before removing the display assembly, 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. Disconnect the wireless antenna cables from the WLAN module (see “WLAN module” on page 4-11) and
WWAN module (see “WWAN module” on page 4-14).
6. Remove the keyboard and switch cover (see “Keyboard and switch cover” on page 4-22).