For Your Reference:
Disc handling and maintenance
Handling precautions
Hold the disc by the edges so the surface will not soiled with fingerprints.(
A
)
Fingerprints, dirt and scratches can cause skipping and distortion.
Do not write on the lable side with a ballpoint pen or other writing utensils
Do not use record cleaning sprays, benzine, thinner, static electricity prevention liquids or any other solvent.
Be careful not to drop or bend the disc.
Do not install more than 1 disc on the disc tray.
Do not try to close the disc tray when the disc is not installed properly.( 
B
)
Be sure to store the disc in its exclusive case when not in use .
If the surface is soiled ( C
) 
Wipe gently with a soft, damp (water only ) cloth.
When wiping discs, always move the cloth from the center hole toward the outer edge.
(if the wipe the discs using a circular motion, circular scratches are likely to occur, which will cause noise.)
If the disc is brought from a cold to a warm environment, moisture may form on the disc.
Wipe this moisture off with a soft, dry,
Improper disc storage
You can damage discs if you store them in the following places:
Areas exposed to direct sunlight
Humid or dusty areas
Areas directly exposed to a heat outlet or heating appliance
Do not try to play Photo CD best
Maintenance
Be sure to turn the unit off and disconnect the AC power cord before maintaining the unit.
Wipe this unit with a dry soft cloth.
If the surfaces are extremely dirty, wipe clean with a cloth, which has been dipped in a weak
Never use alcohol, benzine, thinner, cleaning fluid or other chemicals. Do not use compressed air to remove dust.
Disc tray | Disc |
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