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RTC battery
Description Spare part number
RTC battery 431436-001
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 cord.
4.
Remove the battery (see
Battery on page 28).
5.
Remove the memory module compartment cover (see
Memory module on page 31).
Remove the RTC battery:
1. Disconnect the RTC battery cable (1) from the system board.
2. Remove the RTC battery (2).
NOTE: The RTC battery is secured to the computer by 2-sided tape. All replacement RTC
battery spare part kits include 2-sided tape.
Reverse this procedure to install the RTC battery.
Component replacement procedures 33