Lexus GS300 1998 Owner's Manual page 262

20L040
A new disc may have rough edges on its inner and outer
perimeter. Remove the rough edges by pressing the side
of a ball–point pen or pencil against the inner and outer
edges of the disc as shown.
If you continue to play a disc with rough edges, flakes will fall
on to the signal side of the disc and cause sound skipping or
other problems.
CAUTION
Compact disc players use invisible laser beams which could
cause hazardous radiation exposure if directed outside the
unit. Be sure to operate the player correctly as instructed.
AIR CONDITIONING AND AUDIO
249