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RTC battery
Description Spare part number
RTC battery 602745-001
Before removing the RTC battery:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on
the computer, 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 following components:
a. Battery (see
Battery on page 36)
b. Hard drive (see
Hard drive on page 37)
c. WLAN module (see
WLAN module on page 42)
d. Memory module (see
Memory module on page 44)
e. Optical drive (see
Optical drive on page 39)
f. Keyboard (see
Keyboard on page 46)
g. Top cover (see
Top cover on page 49)
h. Display assembly (see
Display assembly on page 59)
i. System board (see
System board on page 66)
Remove the RTC battery:
1. Position the system board upside down.
2. Use a sharp, non-conductive tool to release the clip (1) that secures the battery to the system
board.
Component replacement procedures 69