Onkyo C 05 Service Manual

Page 1

C-05

Ref. No.3401

ONKYOO SERVICE MANUAL

COMPACT DISC PLAYER
MODEL C-O5

Titanium and Black models

WPTUDN, UDC

120V AC, 60Hz

UP, UPV, UPF, BHUP, BHUPV, BHUPF

230v Ac; 50Hz

UW, BI-IUW

120/220V AC. 50/60Hz

UQA, BHUQA

240V AC, SOHz

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 COMPONENTS WITH ONKYO PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL.

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

ON KYO
Illlllll IIIIMPIIIIIIIIS

SPECIFICATIONS

Signal readout system:
Reading rotation:

Linear velocity:

Error correction system:
Decoded bits:

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 (WXHXD):

Weight:

Specifications are subject

Optical non-contact

About 500N200 r.p.m.

(constant linear velocity)
1.2~1.4m/s

Cross interleave readsolomon code
1 BIT PWM

176.4kl-Iz (4 times oversampling)
2(Stereo)

5Hz~20kHz

0.004% (at IkHz)

98 dB

96 dB

86dB (at lkHz)

Below threshold of measurability
10 watts

2 volts r.m.s.

275 X80.5>< 310mm

10-13/16">< 3-3/16" >< 12-3/16
3.2kg. 711bsi

to change without notice.

Page 2

C-05

TABLE OF CONTENTS

Specifications
Service procedures '
Note on compact disc -'-------"'

Caution of replacement of optical pickup -------
Protection of eyes from laser beam during servicing ---4
Laser 'arning label ........ .......... .. ......... .....4

Mechanis- exploded view "-
Exploded View -
Part5 list ........ loo-o. ........
lC block diagrams and descriptions
Adjustment procedures -
Printed circuit board vie!

Pc boardiparts list .............. ....................27
Schematic diagram ...... ............................. 23
Block diasra-

Packing Vie' .............................. u ......... 30

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 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
along 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 cord and chassis.
SpecificationszMore than lOMohm 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 moved all the way to
the right or left before turning the power switch on.

9% W

« L-->
220V N 120V N

220V N 120V ~
at AC1 20V at AC220V

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.