Position the Powerbook towards you with the monitor closed.
Press the battery removal latch located on the right side of the front panel.
Gently slide the battery out.
The keyboard, front pane, and hard drive are connected to the laptop's logic board via a ribbon cable. Lift up slowly on each component with one hand and disconnect the ribbons from their ports on the logic board.
With the monitor facing towards you, gently pull up on the keyboard panel from the bottom.
With the keyboard turned over as pictured, carefully remove its ribbon cable from the connection port on the logic board. Use a spudger to lift the white plastic retainer about 1/16" to release the cable.