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RTC battery
Description Spare part number
RTC battery (includes cable and 2-sided tape) 611221-001
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 36).
5.
Remove the memory/wireless module compartment cover (see
WLAN module on page 43).
6.
Remove the WLAN module
WLAN module on page 43
Remove the RTC battery:
1.
Turn the system board upside down, with the audio connectors toward you.
2.
The RTC battery has adhesive holding it down. Lift up slightly on the battery to break the adhesion.
3.
Disconnect the RTC battery cable from the system board, and then remove the RTC battery from
the unit.
48 Chapter 4 Removal and replacement procedures