4.Close the computer and turn it over.
5.Slide the battery latch (Figure 1A) to the right to remove the battery (Figure 1B). Removing the battery will prevent you from accidentally turning on the computer.
Warning: Removing the battery before shutting down your computer may result in data loss.
Figure 1
A
B
6.Turn over the computer.
7.Raise the display so you can access the keyboard.
8.Make sure the keyboard locking screw, located in the small plastic tab to the left of the Num Lock key (Figure 2), is not in the locked position. Your PowerBook comes with the keyboard unlocked, so unless you or someone else locked the keyboard, you can skip this step.
To unlock the keyboard, turn the screw 1/2 turn.
Figure 2
PowerBook G4 (Gigabit Ethernet) Keyboard - 2