1. Recording Copyright
Unless it’s for personal use only, recording copy-
righted material is illegal without the permission of
the copyright holder.
2. AC Fuse
The AC fuse inside the DX-C390 is not user-service-
able. If you cannot turn on the DX-C390, contact
your Onkyo dealer.
Occasionally you should dust the DX-C390 all over
with a soft cloth. For stubborn stains, use a soft cloth
dampened with a weak solution of mild detergent
and water. Dry the DX-C390 immediately after-
wards with a clean cloth. Don’t use abrasive cloths,
thinners, alcohol, or other chemical solvents,
because they may damage the ﬁnish or remove the
BEFORE PLUGGING IN THE UNIT FOR THE
FIRST TIME, READ THE FOLLOWING SEC-
AC outlet voltages vary from country to country.
Make sure that the voltage in your area meets the
voltage requirements printed on the DX-C390’s rear
panel (i.e., AC 120 V, 60 Hz or AC 230 V, 50 Hz).
For North American model
Setting the [STANDBY/ON] switch to STANDBY
does not fully shutdown the DX-C390. If you do not
intend to use the DX-C390 for an extended period,
remove the power cord from the AC outlet.
For non-North American models
To completely shutdown the DX-C390, set the
[POWER] switch to the OFF position.
5. Never Touch This Unit
with Wet Hands
Never handle this unit or its power cord while your
hands are wet or damp. If water or any other liquid
gets inside this unit, have it checked by your Onkyo
6. Installing This Unit
• Install this unit in a well-ventilated location.
• Ensure that there’s adequate ventilation all around
this unit, especially if it’s installed in an audio
rack. If the ventilation is inadequate, the unit may
overheat, leading to malfunction.
• Do not expose this unit to direct sunlight or heat
sources, because its internal temperature may rise,
shortening the life of the optical pickup.
• Avoid damp and dusty places, and places subject
to vibrations from loudspeakers. Never put the
unit on top of, or directly above a loudspeaker.
• Install this unit horizontally. Never use it on its
side or on a sloping surface, because it may cause
• If you install this unit near a TV, radio, or VCR,
the sound quality may be affected. If this occurs,
move this unit away from the TV, radio, or VCR.
7. Moisture Condensation
Moisture condensation may damage this unit.
Read the following carefully:
When you take a glass containing a cold drink out-
side on a summer’s day, drops of water, called con-
densation, form on the outside of the glass.
Similarly, moisture may condense on the lens of the
optical pickup, one of the most important parts
inside this unit.
• Moisture condensation can occur in the following
— The unit is moved from a cold place to a warm
— A heater is turned on, or cold air from an air
conditioner is hitting the unit.
— In the summer, when this unit is moved from
an air conditioned room to a hot and humid
— The unit is used in a humid place.
• Do not use this unit when there’s the possibility of
moisture condensation occurring. Doing so may
damage your discs and certain parts inside this
If condensation does occur, remove all discs and
leave this unit turned on for two to three hours. By
this time, the unit will have warmed up and any con-
densation will have evaporated. To reduce the risk of
condensation, keep this unit connected to a wall out-
This unit contains a semiconductor laser system and is
classiﬁed as a “CLASS 1 LASER PRODUCT.” So, to
use this model properly, read this Instruction Manual
carefully. In case of any trouble, please contact the
store where you purchased the unit. To prevent expo-
sure to the laser beam, do not try to open the enclosure.
VISIBLE AND INVISIBLE LASER RADIATION
WHEN OPEN AND INTERLOCK FAILED OR
DEFEATED. DO NOT STARE INTO BEAM.
THIS PRODUCT UTILIZES A LASER. USE OF
CONTROLS OR ADJUSTMENTS OR PERFOR-
MANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.
On some products, this label is located on the rear
panel. It indicates that:
1. This unit is a CLASS 1 LASER PRODUCT and
employs a laser inside the cabinet.
2. To prevent the laser from being exposed, do not
remove the cover. Refer servicing to qualiﬁed per-