HP (Hewlett-Packard) nc6300 ユーザーズマニュアル

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Removal and Replacement Procedures
Maintenance and Service Guide
5–35
5.14 RTC Battery
The RTC battery is included in the Plastics Kit, spare part 
number 413704-001.
2. Release the keyboard (
).
3. Disconnect the RTC battery cable 1 from the system board.
4. Remove the RTC battery 2 from the clip in the top cover.
Removing the RTC Battery
Reverse the above procedure to install an RTC battery.