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 33).
5. Remove the following components:
a. Service door (see Service door on page 34).
b. Hard drive (see Hard drive on page 35)
c. Keyboard (see Keyboard on page 42)
d. Top cover (see Top cover on page 47)
e. System board (see System board on page 60)
Remove the RTC battery:
1. Position the system board upside-down.
2. Use a tool to pry the battery out of the socket (1).
3. Remove the battery from the system board (2).
Reverse this procedure to install the RTC battery.
Component replacement procedures 63
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