HP 4540s Spezifikationen PDF herunterladen (Seite 101)

Function board/Power button board assembly

Description Spare part number

Function board/Power button board assembly for use in 4540s models (includes cable) 683486-001

Function board/Power button board for use in 4440s/4441s models (includes cable) 683653-001

Before removing the function board and power button 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)

d. Speaker (see

Speaker assembly on page 91)

Remove the function board/power button board assembly:

1. Position the top cover upside-down with the front toward you.

2. Remove the two Phillips PM2.0×4.0 screws (1) that secure the boards to the top cover.

3. Remove the function board from the top cover (2).

Component replacement procedures 93

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HP 4540s Spezifikationen Seite 101