Onkyo DX-6930 User Manual

DX-6930
DX-6920
TABLE OF CONTENTS
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NOTE ON COMPACT DISC
© Holding Compact Discs
Hold Compact Discs by the edges so that you do not touch
the surface of disc. Remember that the side of the disc with
the “rainbow” reflection is the side containing the audio
information.
Do not attach tape or paper to the label side of the disc
and always be careful not to leave fingerprints on the side
that is played.
@ Storing Compact Discs
Store Compact Discs in a location protected from direct
sunlight, high heat and humidity and extremely high
and low temperatures. Discs should never be left in the
trunk or interior of an automobile in the sun since the
temperature can become very high in such a closed environ-
ment.
Always store Compact Discs in the holders in which they
were sold. Never leave a disc in the player’s disc holder for
a long period of time.
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SERVICE PROCEDURES
1. Safety-check out
After correcting the original service problem,perform
the following safety check before releasing the set
to the customer:
Connect the insulating-resistance tester between the
plug of power supply cord and chassis.
Specifications:More than 10Mohm at SO0V.
@ Cleaning Compact Discs
Before playing a disc wipe off the playing surface with a
soft cloth to remove dust and other soil. Wipe the surface
in straight lines from the center of the disc outward, not
in a circular motion as you would with a phonograph
record.
Do not use benzene, chemical cleansers or phonograph
record cleaning solutions to clean Compact Discs. Also
avoid static electricity prevention solutions since they can
damage the surface of Compact Discs.
Problems Caused by Dew
Dew can form inside a Compact player when it is brought
from a cold environment into a warm room, when a room
is rapidly heated and if a player is left in a humid environ-
ment.
This dew can prevent the laser pickup from reading the
data contained in the pits in the disc surface. If the player
does not operate properly because of dew, remove the disc
and leave the player’s power switch on for about one
hour to remove all moisture.
CAUTION ON REPLACEMENT OF OPTICAL PICKUP
The laser diode in the optical pickup block is so
sensitive to static electricity,surge current and etc,
that the components are liable to be broken down
or its reliability remarkably deteriorated.
PRECAUTIONS
1.Ground for the work-desk.
Place a conductive sheet such as a sheet of copper
(with inpedance lower than 1OM1Q.) on the work-
desk and place the set on the conductive sheet so
that the chassis.
2.Grounding for the test equipment and tools.
Test equipments and toolings should be grounded
in order that their ground level is the same the
ground of the power source.
During repair,carefulley take the following precautions.
(The following precautions are included in the service
parts.)
3.Grounding for the human body.
Be sure to put on a wrist-strap for grounding whose
other end is grounded.
Be particularly careful when the workers wear
synthetic fiber clothes, or air is dry.
4.Select a soldering iron that permits no leakage and
have the tip of the iron well-grounded.
5.Do not check the laser diode terminals with the
probe of a circuit tester or oscilloscope.
Care Should be taken with the optical pickup.
The optical pickup is sensitive to static electricity surge currents,and other
high electrical noise, and because there is the possibility of damage to
performance, in the handling of the pickup, the utmost care must be
taken, particularly with regard to static electricity.
1. When checking the laser terminal, avoid making connections using the
probes of a tester or oscilloscope, or an ordinary power supply.
2. When replacing the optical pickup, first short the LD terminals and
remove the connector. Also, when attaching the new optical pickup,
after attaching the connector, unsolder the LD terminals.
Terminal
LD
Optical pickup
DX-6930 4
DX-6920 3

Onkyo DX-6930 Specifications

General

Brand	Onkyo
Model	DX-6930
Category	CD Player
Language	English