Onkyo DXC 311 Service Manual

Page 1

ONKYO SERVICE MANUAL

COMPACT DISC PLAYER

MODEL DX-C1 11

MODEL DX-C211

BMD, BMDN 120V AC, 60Hz
BMP, BMPV 230V AC, 50Hz
BMW 120/220V AC, 50/60Hz

SAFETY-RELATED COMPONENT WARNING"

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 COM-
PONENTS WITH ONKYO PARTS WHOSE PARTS
NUMBERS APPEARASSHOWN IN THIS MANUAL.

MAKE LEAKAGE-CURRENT 0R RESISTANCE
MEASUREMENTS TO DETERMINE THAT
EXPOSED PARTS ARE ACCEPTABLY IN-
SULATED FROM THE SUPPLY CIRCUIT BEFORE
RETURNING THE APPLIANCE TO THE
CUSTOMER.

ONKYO.
Alllllll WINNIE

SPECIFICATIONS

Compact Disc Automatic Changer Model DX-C3ll/C21l/C11l
Signal readout system: Optical non-contact

Reading rotation: About 500 - 200 r.p.m.
(constant linear velocity)
Linear velocity: l.2 - 1.4 m/s
Error correction system: Cross interleave Reed-Solomon code
D/A converter: 1 bit PWM/
ACCUPULSE (DX-C3Il/C211)
Sampling frequency: 352.8 kHz (8 times oversampling)
Number of channels: 2 (stereo)
Frequency response: 2H1 - 20kHz
Total harmonic distortion: 000496 (at lld-Iz)
Dynamic range: 96dB (at lkl-Iz)
Signal to noise ratio: 96:18 (at lkI-Iz)
Channel separation: 90dB (at lltHz)
Wow and Flutter: Below threshold or measurablllry
Output level: 2 volts r.m.s.
Power consumption: 13 watts

Dimensions (W x H x D): 455 x 120 X 425 mm
(l7-lS/16"X4-3/4"><16-ll/16")
Mass: 74 kg (16.3 lbs)

Specifications and external appearance are subject to change
without notice because of product improvements

DX-C111/DX-C211rDX-C311

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DX-Clll/DXCZH/DX-C311

TABLE OF CONTENTS

Specifications .........

Service procedures ..

Caution on replacement of optical pickup ............... 2

Protection of eyes from laser beam. .

Laser warning labels .......................................... 3
IC block diagrams and descriptions ....................... 4
Packing view ...................................................... 9

Pick-up drive unit ...............

Chassis-exploded View.

Parts list ........................

Block diagram ..................

Adjustment procedures

Printed circuit board View from bottom side..,.

Printed circuit board-parts list ......................

Control position and names ................................. 27

SERVICE PROCEDURES

1. S afety-check out
After correcting the original service problem.perfonn
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.
SpecificationszMore than lOMohm at 500V.

2. V oltage Selector (B ack panel)
Worldwide models are equipped with a voltage selector
to confirm with local power supplies.Be sure to set
this switch to match the voltage of the power supply
in users area before turning the power switch on.
Voltage is changed by sliding the groove in the switch
with a screw driver to the right or left.
Confirm that the switch has been moved all the way to
the right or left before turning the power switch on.

1313 ED
4- l-p 4-- ->
220V ~ " 120V ~ 220V ~ 120V ~
at ACIZOV at AC220V

CAUTION ON REPLACEMENT OF OPTICAL PICK UP

The laser diode in the optical pickup block is so

During repairparefirlley take the following precautions.

sensitive to static electricitysurge current and etc. (The following precautions are included in the service

that the components are liable to be broken down pans.)

or its reliability remarkably deteriorated

PRECAUTIONS

l.Ground for the work-desk.

3.Grcunding for the human body.

Place a conductive sheet such as a sheet of copper Be sure to put on a wrist-strap for grounding whose

(with inpedance lower than IOMO) on the work- other end is grounded.

desk and place the set on the conductive sheet so Be particularly careful when the workers wear

that the chassis. synthetic fiber clothes, or air is dry.
2.Grounding for the test equipment and tools. 4.Select a soldering iron that permits no leakage and

Test equipments and toolings should be grounded have the tip of the iron well-grounded.

in order that their ground level is the same the S.Do not check the laser diode terminals with the

ground of the power source. probe of a circuit tester or oscilloscope.