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4–12 Maintenance and Service Guide
Removal and replacement procedures
RTC battery
Before removing the RTC battery:
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 disconnecting the power cord from the AC outlet and then
disconnecting the AC adapter from the computer.
4. Remove the battery (see “Battery” on page 4-7).
Remove the RTC battery:
1. Remove the two Phillips PM2.5×6.0 captive screws 1 that secure the Mini Card compartment cover to the
computer.
2. Lift the right side of the Mini Card compartment cover 2, swing it to left, and remove the cover 3.
Description Spare part number
RTC battery 486835-001