HP 4340s User Manual download pdf (Page 66)

RTC battery

Description Spare part number

RTC battery 684248-001

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 31).

5. Remove the following components:

a. Bottom door (see

Bottom door on page 33).

b. Keyboard (see

Keyboard on page 45)

c. Top cover (see

Top cover on page 47)

Remove the RTC battery:

1. Position the computer upright with the front toward you.

2. Use a screwdriver to loosen the battery from the slot.

3. Lift the battery from the system board.

Reverse this procedure to install the RTC battery.

58 Chapter 4 Removal and replacement procedures

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HP 4340s User Manual Page 66