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 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 46).
5.Remove the memory/WLAN module compartment cover (see Expansion memory module on page 54).
6.Release the keyboard (see Keyboard on page 62).
Remove the RTC battery:
Use a
Reverse this procedure to install the RTC battery. Be sure the RTC battery is installed with the “+” sign facing up.
66 Chapter 4 Removal and replacement procedures
