Apple PowerBook G3 - Manual (Page 35)

Using Your PowerBook and Connecting to a Network 35
5 Place a disc in the tray, with the label facing up.
Make sure the disc is lying flat in the tray and is seated firmly on the spindle.
Note: CD-ROM and DVD-ROM drives have small locks on the drive spindle that securely
hold the disc in place. When inserting a disc over these locks, you may need to apply
additional pressure. Place the hole in the center of the disc directly over the drive spindle
and press down until you feel the disc lock into place.
6 Push the tray in to close it.
Keep the tray closed except when loading discs. This prevents dust from getting inside the
mechanism. Be sure to keep discs free of dust and grease.
Note: When the drive is in use, you may notice some vibration as the disc spins rapidly.
Certain discs can cause the drive to vibrate because they have heavily inked artwork or a label
that creates an imbalance as the drive spins. Some vibration is not unusual for a high-speed
CD-ROM or DVD-ROM drive. To minimize vibration from unbalanced discs, do not put labels
on your discs. In addition, place the computer on a flat, solid surface when using the drive.
Insert the disc,
label side up.