RTC battery
Description Spare part number
RTC battery 718440-001
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst 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 30).
5. Remove the optical drive (see Optical drive on page 31), if installed.
6. Remove the bottom cover (see Bottom cover on page 34).
To remove the RTC battery:
▲
Using a thin tool or screwdriver, disengage the battery from the socket (1), and then remove the battery
(2).
Reverse this procedure to install the RTC battery.
44 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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