Onkyo DX 3700 Service Manual

Page 1

SERIAL NO.3350

ONKYO® SERVICE MANUAL

COMPACT DISC PLAYER
MODEL DX-3700

Black model

BUDN, BUD

120V AC, 60 Hz

BUG

220V AC. SOHZ

BUU

110/120/220/240V AC, 50/60Hz

BUQA, BUQB

240V AC, 50 Hz

SAFETY-RELATED COMPONENT WARNINGEI

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO PARTS
WHOSE PARTS NUMBERS APPEAR AS SHOWN IN THIS
MANUAL

MAKE LEAKAGE-CURRENT OR RESISTANCE MEA~
SUREM ENTS TO DETERMINE THAT EXPOSED PARTS
ARE ACCEPTABLY INSULATED FROM THE SUPPLY
CIRCUIT BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.

ONKYO l
Alllllll BflMPflllIllISi _

1..

SPECIFICATIONS

Signal readout system:
Reading rotation:

Linear velocity:

Error correction system:
Decoded hits:

Sampling frequency:
Number of Channels:
Frequency response:

Total harmonic distortion:

Dynamic range:

Signal to noise ratio:
Channel separation:
Wow and Flutter:
Power consumption:
Output level:
Dimensions (WX HXD):

Weight:

Optical non-contact

About 500~200 rpm.

(constant linear velocity)
ll2~l.4m/s

Cross interleave readsolomon code
l8 hits linear

352.8kHz (8 times oversampling)
2 (Stereo)

ZHZNZUKHZ

0.003% (at lkHz)

98dB

l06dB

modB (at lkHz)

Below threshold of measurability
IE: watts

2 volts r.m.s.

435x118><312 mm

17- l/8><4-5/8">< 1271/4

5.(lkg. ll.0 lhs.

Specifications are subject to change without notice.

Page 2

TABLE OF CONTENTS

Specifications -----
Service procedure.
Note on compact disc
Caution on replacement of
optical pickupw' ,
Protection for eyes from laser beam
during servicing-Wm . -
Laser warning labels '-
Chassis-exploded view
pans list .................
Mechanism-exploded view-
Main chass'
Servo unit
Disassembling/attachment procedures
[C block diagrams and des ptions
Adjustment procedures
Pc board view 8t pans li.
Block diagram -
Packing View

NOTE ON COMPACT DISC

0 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.

0 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 auiomobile 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.

Not this way

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 cable and chassis.

Specifications: more than 10Mohm at 500V.

2. Voltage selector (back panel)

Worldwide models are equipped with a voltage selector to
conform with local power supplies. Be sure to set this selector
to match the voltage of the power supply in your area before
turning the power switch on. Voltage is changed by turning
the voltage selector with a screwdriver or similar instrument
to the UV. 120V. 220V or 240V position. Confirm that the
selector has been set to the correct position before turning
the power switch on. If there is no voltage selector switch on
the unit you have purchased. it can only be used in areas
where the power supply voltage is the same as that ofthe unit.

MW

at AC 110V at AC 120V at AC 220V at AC 240V

0 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 ahumid 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 players power switch on for about one
hour to remove all moisture.

Page 22

PACKING VIEW

Cord
Ba" ery

REF.NO. PART NO. DESCRIPTION

1 291100714 50X500mm, Damplon tape -220/240V models-

2 29100037». sooxssoinni, Poly-vinyl bag 2010097 Conneclion cord

3 29091304 Pad R 24140121 RC-121C. Remote control unit

4 29091303 Pad L 3010054 UM-3, Two batteries

5 282301 Sealing hook 29341466 Instruction manual

6 29051996 Master canon box 29100097 350X250mm, Polyrvinyl bag
29110089 Adhesive tapev Tray panel 2010169 Connection cord for remote control
Aocossary bag assy -Worldwida modal:-
.1zov modeler 2010097 Conection cord
2010097 Connection cord 24140121 RC-121C, Remote control unit
24140121 RC-121C. Remote control unit 3010054 UM73, Two batteries
3010054 UMJ, Two batteries 29341466 Instruction manual
29341465 Instruction manual 29100097 350 X250mmi Polyvinyl bag
29100097 350x250mm_ Poly-Vinyl bag 2010169 Connection cord for remote control
2010169 Connection cord for remote control 25055040 CV-K-2, Conversion plug
29365019 Warranty card (Only U.S.A. model)
293580020 Service station list (Only U.S.AV model)

ONKYO CORPORATION
International Division: Onarimon Yusen Bldg., 23-5, S-chome, Nishi-Sinbashi, Minato-ku, Tokyo, Japan
Telex: 2423551 ONKYO J. Phone: 013-432-6981

ONKYO U.S.A. CORPORATION
200 Williams Drive. Ramsey, NJ. 07446 Tel. 201-825-7950

_ 23 _ SNOM3350 N909 Printed in Japan