Compaq CQ42 manual Power button board, a. Hard drive see Hard drive on page

Power button board

Description	Spare part number
Power button board (with cable)	600188-001

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 43).

5.Remove the following components:

a.Hard drive (see Hard drive on page 44)

b.Optical drive (see Optical drive on page 47)

c.Keyboard (see Keyboard on page 53)

d.Top cover (see Top cover on page 55)

Remove the power button board:

1.Turn the top cover upside down with the rear edge toward you.

2.Remove the Phillips PM2.5×3.0 screw (1) that secures the power button board to the top cover.

3.Remove the power button board (2).

Component replacement procedures 59