RTC battery
Description Spare part number
RTC battery not spared
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 following components:
a. Service door (see Service door on page 31).
b. Hard drive (see Hard drive on page 34)
c. Optical drive (Optical drive on page 32)
d. Keyboard (see Keyboard on page 41)
e. Top cover (see Top cover on page 48)
f. Battery (see Battery on page 62)
g. System board (see System board on page 70)
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 73
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