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RTC battery
Description Spare part number
RTC battery 449137-001
Before removing the RTC battery, 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 60).
5. Remove the following components:
a. Switch cover and keyboard (see
Switch cover and keyboard on page 61)
b. Palm rest (see
Palm rest on page 71)
c. Top cover on 14.0-in models (see
Top cover on page 84)
Remove the RTC battery:
1. Position the computer right-side up with the front toward you.
2. Remove the RTC battery from the socket on the system board.
Reverse this procedure to install the RTC battery.
90 Chapter 4 Removal and replacement procedures