RTC battery
Description Spare part number
RTC battery 684248-001
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 40).
5. Remove the following components:
a. Bottom door (see
Bottom door on page 42).
b. Keyboard (see
Keyboard on page 54)
c. Top cover (see
Top cover on page 56)
Remove the RTC battery:
1. Position the computer upright with the front toward you.
2. Use a screwdriver to loosen the battery from the slot.
3. Lift the battery from the system board.
Reverse this procedure to install the RTC battery.
Component replacement procedures 67
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