Compaq CQ42 Top cover, a. Battery see Battery on page, b. Optical drive see Optical drive on page

Top cover

Description	Spare part number
Top cover (includes Touchpad and bracket, button board, and cable), matte black	600181-001
Top cover, bicotti	600182-001
Top cover, silver	606161-001
Top cover, white (for model 1.0 only)	606162-001
Top cover, charcoal (for model 1.1 only)	622581-001

Before removing the switch cover, 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 following components:

a.Battery (see Battery on page 43).

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

c.Keyboard (see Keyboard on page 53).

Remove the switch cover:

1.Turn the computer upside down with the front toward you.

2.Remove the four screw covers (1) at the front edge of the computer.

Component replacement procedures 55