Onkyo DXC 606 Service Manual

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DX-C909
DX-C606

REF. NO. 3415

ONKYO SERVICE MANUAL

COMPACT DISC PLAYER
MODEL DX-C909 MODEL DX-C606

Black model
BHUD, BHUDN 120V AC, 60Hz
BHUP, BHUPF Z30V AC, 50Hz
BHUW 120/220V AC, 50/60Hz
SPECIFICATIONS
SAFETY-RELATED COMPONENT WARNING
Signal readout system: Optical nonrcontact
COMPONENTS IDENTIFIED BY MARK A ON Reading rotation: About 300~20(Jr,p.m.
THE SCHEMATIC DIAGRAM AND [N THE PARTS (constant linear velocity)
LIST ARE CRITICAL FOR RISK OF FIRE AND Linear velocity: 12~1_4m/s
ELECTRIC SHOCK REPLACE THESE COM. Error correction system: Cross interleave readsolomon code
PONENTS WITH ONKYO PARTS WHOSE PARTS Decoded bits: 1 BIT PWM/ACCUIULSE
NUMBERS APPEAR AS SHOWN IN THIS MANUAL, D/A CONVERTER
MAKE LEAKAGE-CURRENT OR RESISTANCE ~ Sampling frequency: 352kHz<8 times oversampling)
MEASUREMENTS TO DETERMINE THAT Number of channels: 2(Stereo)
EXPOSED PARTS ARE ACCEPTABLY IN~ Frequency response: 2Hz~20kHz
SULATED FROM THE SUPPLY CIRCUIT BEFORE Total harmonic distortion: ().()[)28% (at lkllz)
RETURNING THE APPLIANCE TO THE Dynamic range: 98dB (at 1kHz)
CUSTOMER. Signal to noise ratio: 1(l6dB Channel separation: 92dB Wow and Flutter: Below threshold of measurability
Power consumption: 13 watts
Output level: 2 volts r.m.s.

I)imensions(W>< H X 1)): 453 X130 X 43(Jmm
17715/16"><571/8">< 17"
Weight: 9kg. 19.8le.

ONK E 0 Specifications are subject to change without notice.
0

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DXVCSOS
DX~C606

TABLE OF CONTENTS

Specifications .............................................................. 1
Service procedures ...................................... .2
Caution on replacement of optical pickup... .2
Protection of eyes from laser beam during servicing.....3

Laser warning label ..........................
IC block diagrams and descriptions.

Mechanism-exploded view ................

Mechanism-parts list..

Exploded View ........... .
Parts list ................................................................... 15
Block diagram ..............

Adjustment procedures.
Primed circuit board view from bottom side ............... 21
Printed circuit board-parts list...
Packing view .............................

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 insulatingresistance tester between the
plug of power supply cord and chassis.
SpecificationsMore 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 switch to match the voltage of the power supply
in user's 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 m0ved all the way to
the right or left before turning the power switch on.

[ID [IE]
4- 4- |->
220v ~ 120v ~ 220v ~ 120V ~
at ACIZOV at AC220V

CAUTION ON REPLACEMENT OF OPTICAL PICKUP

The laser diode in the optical pickup block is so
sensitive to static electricitysurge current and etc.
that the components are liable to be broken down
or its reliability remarkably deteriorated

PRECAUTIONS

During repair,carefnlley take the following precautions.
(The following precautions are included in the service
parts.)

1.Ground for the work-desk.
Place a conductive sheet such as a sheet of copper
(with inpedance lower than lOMfl.) 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.

3.Grounding for the human body.
He 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.