RTC battery
Description Spare part number
RTC battery 491571–001
Before removing the RTC battery:
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 disconnecting the power cord from the AC outlet
and then disconnecting the AC adapter from the computer.
4. Remove the
Battery on page 43.
5. Remove the
Hard drive cover on page 44.
To remove the RTC battery, use a non-conductive pointed tool to pry the RTC battery from the socket on
the system board.
Reverse this procedure to install the RTC battery. Be sure that the RTC battery is installed with the “+”
sign facing up.
ENWW
Component replacement procedures
51
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