HP 550 manual Modem module

Modem module

NOTE: The modem module spare part kit does not include a modem module cable. The modem module cable is included in the Cable Kit, spare part number 456594-001.

Description	Spare part number
For use in the United States	461749-001
For use in Australia and New Zealand	461749-011

Before removing the modem module, 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)

i.System board (see System board on page 66)

Remove the modem module:

1.Turn the system board upside down, with the USB connectors toward you.

2.Remove the two Phillips PM2.5×4.0 screws (1) that secure the modem module to the system board.

76 Chapter 4 Removal and replacement procedures