HP 550 manual TouchPad board and TouchPad button board

TouchPad board and TouchPad button board

NOTE: The top cover, spare part number 495399-001, includes the TouchPad board and cable, and the TouchPad button board and cable.

Before removing the TouchPad board and TouchPad 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 39).

5.Remove the following components:

a.Hard drive (see Hard drive on page 40)

b.Optical drive (see Optical drive on page 46)

c.Keyboard (see Keyboard on page 50)

d.Switch cover (see Switch cover on page 48)

e.Speaker (see Speaker on page 53)

f.Display lid switch module (see Display lid switch module on page 54)

g.Display assembly (see Display assembly on page 55)

h.Top cover (see Top cover on page 60)

Remove the TouchPad board and TouchPad button board:

1.Turn the top cover upside down, with the front toward you.

2.Release the ZIF connectors on the TouchPad button board (1) and TouchPad board (2) to which the TouchPad board cable is connected.

3.Disconnect and remove the TouchPad board cable (3).

Component replacement procedures 63