Hitachi 2730P Audio connector board, a.SIM see “SIM” on page, c.Keyboard see “Keyboard” on page

Removal and replacement procedures

Audio connector board

Description	Spare part number
Audio connector board (includes cable)	507056-001

Before removing the audio connector 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 4-8).

5.Remove the following components:

a.SIM (see “SIM” on page 4-9)

b.Hard drive cover (see “Hard drive” on page 4-10)

c.Keyboard (see “Keyboard” on page 4-17)

d.Hinge cover (see “Hinge cover” on page 4-20)

e.Top cover (see “Top cover” on page 4-21)

Remove the audio connector board and cable:

1.Release the ZIF connector 1 to which the audio connector board cable is connected, and disconnect the audio connector board cable 2 from the system board. The audio connector board cable is included with the audio connector board and is also available in the Cables Kit, spare part number MCK-001.

2.Remove the Phillips PM2.0×5.0 screw 3 that secures the audio connector board to the base enclosure.

3.Remove the audio connector board and cable 4.

Reverse this procedure to install the audio connector board.

4–24 Maintenance and Service Guide