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RTC battery
NOTE:
Removing the AC adapter, battery pack, and RTC battery and leaving them uninstalled for 10
or more seconds causes all passwords and CMOS settings to be cleared.
Description
RTC battery
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
5.
Remove the following components:
a.
Hard drive (see
b.
Memory module (see
c.
WWAN module (see
d.
WLAN module (see
e.
Keyboard (see
f.
Top cover (see
g.
Fan (see
h.
System board (see
Remove the RTC battery:
1.
Turn the system board upside down.
2.
Disconnect the RTC battery cable (1) from the connector on the system board.
66
Chapter 4 Removal and replacement procedures
Battery on page
Hard drive on page
Memory module on page
WWAN module on page
WLAN module on page
Keyboard on page
Top cover on page
Fan on page
55)
System board on page
39).
40)
43)
45)
47)
50)
53)
59)
Spare part number
517759-001
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