RTC battery
Description Spare part number
RTC battery 686922-001
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 base enclosure (see
Base enclosure on page 27).
5. Disconnect the battery cable (see
Battery on page 29).
Remove the RTC battery:
1. Disconnect the RTC battery cable from the system board (1).
NOTE: Use a thin, non-conductive tool to remove the RTC battery from the socket on the
system board.
2. Remove the RTC battery (2). (The RTC battery is attached to the system board by double-sided
adhesive.)
Component replacement procedures 31
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