RTC battery
Description Spare part number
RTC battery 747132-001
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 43), and then remove the following components:
●
Service door (see
Service door on page 49)
●
WLAN module (see
WLAN module on page 52)
●
Top cover (see
Top cover/keyboard on page 55)
●
System board (see
System board on page 73)
To remove the RTC battery:
1. Position the system board upside down.
2. Disconnect the battery cable from the system board (1), and then lift the battery up and off the system
board (2).
Reverse this procedure to install the RTC battery.
90 Chapter 4 Removal and replacement procedures