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RTC battery
Description Spare part number
RTC battery 507707-001
Before removing the real-time clock (RTC) battery, follow these steps:
1. Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device
on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the device.
3. Disconnect the power from the device by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the device.
4. Remove the battery (see
Battery on page 32).
5. If your device has WWAN capability, remove the SIM (see
SIM on page 33).
6. Remove the Keyboard (see
Keyboard on page 36).
7. Remove the Hard drive (see
Hard drive on page 39).
8. Remove the Top cover (see
Top cover on page 44).
9. Remove the Display assembly (see
Display assembly on page 52).
10. Remove the System board (see
System board on page 59).
Remove the RTC battery:
1. Turn the system board upside down.
2. Disconnect the RTC battery cable (1) from the system board.
3. Detach the RTC battery (2) from the system board.
NOTE: The RTC battery is attached to the system board with double-sided tape.
Component replacement procedures 61