iFixit

We recommend placing the computer on a soft cloth from this point on to prevent damaging the logic board.

Turn over the computer and open it.

Remove the 3 Phillips screws from the edges of the keyboard area.

The shorter screw goes in the lower left corner. The left corner is indicated by a blue "L" in the photograph and is on the right side.

Be especially careful while disconnecting the cables in the forthcoming steps. Never pull directly on the cables, but use a spudger to pry up the connector directly from its socket.

Lift the upper case and use a spudger or your finger to disconnect the trackpad connector hidden beneath the white plastic tab.

Be careful while lifting the upper case, as its tabs are still hanging on the metal frame.

The sockets attached to the motherboards of most iBooks are very weak and easily broken. Use extreme caution when pulling connectors out of their sockets.

Lift the upper case enough to disconnect the blue and white power cable from the logic board. Using your fingernails, carefully pry the connector from its socket.

Carefully disconnect the multicolored speaker cable from the logic board in the same fashion.