Clarion NX403A Owner's Manual page 6

1.When the inside of the car is very cold and
the player is used soon after switching on the
heater, moisture may form on the disc (DVD/
CD) or the optical parts of the player and
proper playback may not be possible. If
moisture forms on the disc (DVD/CD), wipe it
off with a soft cloth. If moisture forms on the
optical parts of the player, do not use the
player for about one hour. The condensation
will disappear naturally allowing normal
operation.
2.Driving on extremely bumpy roads which
cause severe vibration may cause the sound
to skip.
3.This unit uses a precision mechanism. Even
NX403A
in the event that trouble arises, never open
the case, disassemble the unit, or lubricate
the rotating parts.
NX403A 5