HP 4416S, 4515S, 4415S manual Power button board, Description Spare part number

Power button board

Description	Spare part number
Power button board for use in computers with 15.6-in displays (includes cable)	574513-001
Power button board for use in computers with 14.0-in displays (includes cable)	574514-001

Before removing the 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 60).

5.Remove the following components:

a.Switch cover and keyboard (see Switch cover and keyboard on page 61)

b.Optical drive (see Optical drive on page 66)

c.Speakers (see Speakers on page 69)

d.Palm rest (see Palm rest on page 71)

e.Hard drive (see Hard drive on page 74)

f.Top cover (see Top cover on page 84)

g.Display assembly (see Display assembly on computers with 15.6-in displays on page 78 or Display assembly on computers with 14.0-in displays on page 91)

To remove the power button board:

1.Position the top cover upside down with the rear toward you.

88 Chapter 4 Removal and replacement procedures