Apple BookG4 Computer - Manual (Page 80)

80 Chapter 5
6 Carefully slide the bottom case away from you.
7 Pivot the bottom case up as shown in the illustration below.
8 Touch a metal surface inside the computer to discharge any static electricity.
Important
Do not twist the case from side to side. Slide the bottom case forward
completely before lifting it up. If you feel any resistance when lifting the bottom case,
double-check to make sure the bottom case is slid all the way forward and releases from
the optical drive slot.