RTC battery
Description Spare part number
RTC battery 826388-001
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst 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 31).
5. Remove the following components:
a. Service doors (see Service doors on page 32).
b. Hard drive (see Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. Keyboard (see Keyboard on page 43)
e. Top cover (see Top cover on page 48)
f. System board (see System board on page 66)
Remove the RTC battery:
1. Position the system board upside-down.
2. Use a tool to pry the battery out of the socket (1).
Component replacement procedures 69
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