Onkyo DXC 730 Service Manual
This is the 19 pages manual for Onkyo DXC 730 Service Manual.
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Extracted text from Onkyo DXC 730 Service Manual (Ocr-read)
Page 1
730
Ref. No. 3548
ONKYO SERVICE MANUAL
COMPACT DISC PLAYER
MODEL DX-C73O
Black model only
MD
MP
1on AC. 60H;
1 230V AC. 501-12
120/ 220V AC, 750/601-12
SATETY-RELATED COMPONENT WARNING
COMPONENTS INDENTIFIED 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
MEASUREMENTS TO DETERMINF THAT
EXPOSED PARTS ARE ACCEPTABLY
INSULATED FROM THE SUPPLY CIRCUIT
BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER
Signal rcadnul systcm.
Reading rotation:
Linear velocity:
Error correction system:
D/A converter:
Sampling frequency.
Number ofchanncls'
Frequency response:
Total harmonic distortion:
Dynamic range:
Signal to noise ratio:
Channel separation:
Wow and Flutter:
Output level:
Power consumption:
Power supply:
ONKYO®
lllllllll llflMPllllIllIS
Dimensions (W X H X D):
VVcighl:
SPECIFICATIONS
Compact Disc Automatic Changer Model DXAC730
Opllbdl nuwuutuact
About 500 ~l(l(l r.p.m.
(constant linear Velocity)
1.2 A1,4m/>
Cross [nterleavc Reed-Solnmon code
1 bit PWM ACCUIULSE
40(JkH1. (8 times oversampling)
2 (stereo)
2H2 , 20kHz
0.004%
96:18
98db
92db (at lkHL)
Helnw threshold ul measurability
2 volts r.m,s.
15 wtttts
U S A and Cllnlldmn models:
AC 120V. 60H],
Eumncnn mudcls:
AC 230V, 50H].
Worldwide models:
AC 220 - 230V and 120V
Su'ilcllflblc. 50/60Hz
435 X131><429mm
(1 771/8" >< S-3/16">< 161/8")
1.21:5 (18.1 Ills.)
SpsCtIications and extcmtil appearance :trc subjcct 11) Change
Without notice because til prmluct impruvcmcnts.
Page 2
DX-C73O
TABLE OF CONTENTS
Specification
Service procedure
Caution on replacement of optical pikup
Protection of eyes from laser beam
Laser warning labels
IC block diagram
Microprocessor terminal description
Mechanism exploded view and parts list
Printed circuit PC board parts list
Chassis parts list
Changer mechanism parts list
Chassis exploded view
Block diagram
Adjustment procedure
Printed circuit board view
Packing view
Schematic diagram
Test mode
SERVICE PROCEDURES
1 l. Safety-check out
2 After correcting the original service problemperfonn
2 the following safety check before releasing the set
3 to the customer:
3 Connect the insulating-resistance tester between the
9 plug of power supply cord and chassis.
10 Specifications:More than lOMohm at 500V.
12 2. Voltage Selector (Back panel)
3 Worldwidemodelsareequipped withavoltage sebctor
14 to conform with local power supplieslle sure to set
i: this switch to match the voltage of the power supply
19 in users area before turning the power switch on.
21 Voltage is changed by sliding the groove in the switch
24 with a screw driver to the right or left.
25 Confirm that the switch has been moved all the way to
28 the right or left before turning the power switch on.
| Ell] | [ID
4-- 4--l
220V ~ 120V ~ 220V ~ 120V ~
at ACIZOV at AC'ZZOV
CAUTION ON REPLACEMENT OF OPTICAL PICK UP
During repairearefulley take the following precautions.
sensitive to static electricitysurge current and etc. (The following precautions are included in the service
The laser diode in the optical pickup block is so
that the components are liable to be broken down parts.)
or in reliability remarkably detuiorated.
PRECAUTIONS
1.Ground for the work-desk. 3.Gmunding 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 IOMQ) on the work- other end is grounded.
that the chassis.
2.Grottnding for the test equipment and tools.
in order that their ground level is the same the
ground of the power source.
desk and place the set on the conductive sheet so
Be particularly careful when the workers wear
Test equipments and toolings should be grounded
synthetic fiber clothes. or air is dry.
4.Select a soldering iron thatpennlts no leakage and
have the tip ofthe iron well-gromded.
5.Donotcheckthelaserdiode terminals withthe
probe of a circuit tester or oscilloscope.
Page 14
PACKING VIEW
213
21 o
REF. NO PART NO. DESCRIPTION
201 82115018 5P+18FN, SCREW Accessary bag assy
202 27270382Y 105x15x5.2, SPACER 29100097-IAY 350x250. POLY BAG
206 29053007AY CARTON 2010244Y or PIN CORD AS
207 29091726Y PAD (L) 2010326Y
208 29091727Y PAD (R) 2010200 3.5MIN1 PLUG, CORD AS
209 29100141AY 700x600. POLY BAG - 241403221 RC-322C, REMOTE CONTROLLER
210 29110071 W50. PP TAPE 3010165Y or UM-3, BATTERY
211 282301 STAPLE 3010194Y
214 29095721Y SHEET (DOOR) " 29342309Y INSTRUCTION MANUAL (E)
217 29355207Y INSTRUCTION SHEET 29342310Y INSTRUCTION MANUAL (U6)
218 29360687 LABEL (CLASS 1)
29361958Y UPC LABEL
29360840 LABEL (SHEET)
29361786Y LABEL
29360404 SN SHEET
: 230V modeI only
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