RTC battery
Description Spare part number
RTC battery 481089-001
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 41) and the following components:
a. Service access cover (see
Service access cover on page 42.)
b. Keyboard (see
Keyboard on page 62.)
Remove the RTC battery:
1. Disconnect the RTC cable (1) from the system board.
2. Remove the RTC battery (2) from the socket.
Reverse this procedure to install the RTC battery.
Component replacement procedures 65
