HP (Hewlett-Packard) C3Q78UARABA ユーザーズマニュアル

637193-001

Before removing the RTC battery, follow these steps:

Shut down the computer.

Disconnect all external devices connected to the computer.

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.

Remove the battery (see 

Remove the service door (see 

Remove the optical drive (see 

Remove the hard drive (see 

Remove the keyboard (see 

Remove the top cover (see 

).

Remove the system board (see 

Remove the RTC battery:

Turn the system board upside down, with the front toward you.

Disconnect the RTC battery cable (1) from the system board.

Remove the RTC battery (2) from the system board. (The RTC battery is attached to the system

board with double-sided tape.)

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Chapter 4   Removal and replacement procedures

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