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Reverse this procedure to reassemble and install the Bluetooth module.
RTC battery
Description Spare part number
RTC battery 501115-001
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 45).
Remove the RTC battery:
1. Position the computer upside-down with the front toward you.
2. Loosen the two Phillips PM2.0×5.0 captive screws (1) that secure the memory module
compartment cover to the computer.
3. Lift the right side of the cover (2), swing it up and to the left, and remove the cover. The memory
module compartment cover is included in the Plastics Kit, spare part number 495076-001.
4. Disconnect the RTC battery cable (1) from the system board.
Component replacement procedures 55