RTC battery
NOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared.
Description | Spare part number |
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RTC battery | |
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Before removing the
1.Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the device.
3.Disconnect the power from the device by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the device.
4.Remove the battery (see Battery on page 30).
5.Remove the following components:
a.Keyboard (see Keyboard on page 33)
b.Hard drive or
c.Top cover (see Top cover on page 37)
Remove the RTC battery:
1.Disconnect the RTC battery cable (1) from the system board.
2.Detach the RTC battery (2) from the system board, and then remove the RTC battery.
NOTE: The RTC battery is attached to the system board with
Reverse this procedure to install the RTC battery.
42 Chapter 4 Removal and replacement procedures