Pioneer X-NM1 Operating Instructions Manual page 35

To clean this unit, wipe with a soft, dry cloth. For
stubborn dirt, wet a soft cloth with a mild detergent
solution made by diluting one part detergent to 5 or 6
parts water, wring well, then wipe off the dirt. Use a dry
cloth to wipe the surface dry. Do not use volatile liquids
such as benzene and thinner which may damage the
surfaces.
The disc pickup lens should not become dirty in normal
use, but if for some reason it should malfunction due to
dirt or dust, consult your nearest Pioneer authorized
service center. Although lens cleaners for CD players are
commercially available, we do not recommend using
them since some may damage the lens.
When holding discs, take care not to leave fingerprints,
dirt or scratches on the disc surface. Hold the disc by its
edge or by the center hole and edge. Damaged or dirty
discs can affect playback performance. Take care also
not to scratch the label side of the disc. Although not as
fragile as the recorded side, scratches can still result in a
disc becoming unusable.
Should a disc become marked with fingerprints, dust,
etc., clean using a soft, dry cloth, wiping the disc lightly
from the center to the outside edge as shown on the next
page. If necessary, use a cloth soaked in alcohol, or a
commercially available CD cleaning kit to clean a disc
more thoroughly. Never use benzine, thinner or other
cleaning agents, including products designed for
cleaning vinyl records.
Although CDs are more durable than vinyl records, you
should still take care to handle and store discs correctly.
When you're not using a disc, return it to its case and
store upright. Avoid leaving discs in excessively cold,
humid, or hot environments (including under direct
sunlight).
Don't glue paper or put stickers on discs, or write on
them using a pencil, ball-point pen or other sharp-
tipped writing instrument.
Discs spin at high speed inside the player during
playback. If you can see that a disc is cracked, chipped,
warped, or otherwise damaged, don't risk using it —
you could end up damaging the unit.
This system is designed for use with conventional, fully
circular CDs only. Use of shaped discs is not recom-
mended. Pioneer disclaims all liability arising in
connection with the use of shaped discs.