RTC battery
Description Spare part number
RTC battery 665733-001
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 bottom cover (see Bottom cover on page 26).
5. Remove the battery (see Battery on page 29).
Remove the RTC battery:
1. Remove the RTC battery cable from the system board (1).
2. Lift the mylar cover (2).
3. Using a at tool, pry the battery out of the socket (3).
Reverse this procedure to install the RTC battery.
Component replacement procedures 41
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