HP 4540s Spécifications télécharger pdf (Page 103)

Audio board

Description Spare part number

Audio board (includes cable) 683475-001

Before removing the audio board, 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 55).

5. Remove the following components:

a. Bottom door (see

Bottom door on page 58).

b. Keyboard (see

Keyboard on page 70)

c. Top cover (see

Top cover on page 82)

Remove the audio board:

1. Position the top cover upside-down.

2. Disconnect the smaller touchpad button cable (1).

3. Remove the Phillips PM2.0×4.0 screw (2) that secures the audio board to the computer.

4. Rotate the top of the board upward, pull the board away from the connectors (to remove them

from top cover holes), and then lift the board off the top cover (3).

Component replacement procedures 95

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HP 4540s Spécifications Page 103