RTC battery
Description Spare part number
RTC battery (includes cable and double-sided tape) 651948-001
Before removing the RTC battery, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4.
Remove the battery (see
Battery on page 29), and then remove the following components:
a. Service cover (see
Service cover on page 30)
b. Optical drive (see
Optical drive on page 31)
c. Solid-state drive (see
Solid-state drive on page 32)
d. Keyboard (see
Keyboard on page 40)
e. Base enclosure (see
Base enclosure on page 43)
Remove the RTC battery:
1. Disconnect the RTC battery cable (1) from the system board.
2.
Detach the RTC battery (2) from the base enclosure. (The RTC battery is attached to the
base enclosure with double-sided tape.)
3. Remove the RTC battery.
34 Chapter 4 Removal and replacement procedures
