5.Lift the right side of the system board (1) until it rests at an angle.

6.Remove the system board (2) by sliding it up and to the right at an angle.

Reverse this procedure to install the system board.

Optical drive cable

NOTE: The optical drive cable is included in the Cable Kit, spare part number 640206-001. The optical drive cable includes the optical drive connector.

Before removing the optical drive cable, 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 37), and then remove the following components:

●Optical drive (see Optical drive on page 39)

●Hard drive (see Hard drive or SSD on page 41)

●Keyboard (see Keyboard on page 47)

●Top cover (see Top cover on page 50)

●System board (see System board on page 61)

Remove the optical drive cable:

1.Release the optical drive cable (1) from the clips (2) built into the base enclosure.

Component replacement procedures 63