Onkyo DX 7111 Service Manual

Page 1

DX-7211/7111

Ref. No.3579
ONKYO® SERVICE MANUAL
MODELS DX-7211/ 7111
Black and Sllver models
BUP. SUP, BUPT 230V AC. SOHZ
BUWT 220-230V /120V AC, 50/60H7.
BUCK 220V AC. 60H],
BUDN IZOV AC, GUI-I2
SAFETY-RELATED COMPONENT WARNING SPECIFICATIONS
COMPONENTS IDENTIFIED BY MARK A ON THE Signal readout system: Optical non»conlacl
R (17 " I Abo 500-200. .
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE e "1* mm" (conls'iam linear $.53in
Lin-urvchil: l.2-|4m/s
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK Emir comigtirin system: Crciss Interleave Reed-Solomon code
REPLACE THESE COMPONENTS WITH ONKYO WA WWW" 'CgWEyTEgCCUPULSE D/A
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN Sampling frequency: 352.8 kHz (Eight- times oversampling)
Number ofchannels: 2 (stereo)
IN THIS MANUAL. Frequency response: 5 Hz - 20 kHz
Total thrmrInIc dISloruon: 0004 % (at 1 kHz)
Dynamic range: , 96 I!!!
MAKE LEAKAGE-CURRENT OR RESISTANCE Slgnn'mr'msefim? 100
Channel separallon. 90 dB (at I kHz)
MEASUREMENTS TO DETERMINE THAT EXPOSED Wow and Flutter: Below Ihreshold of measurabilily
Output level: 2 volts r.m.s,
PARTS ARE ACCEPFABLY INSULATED FROM THE Headphone jack: 1 _ _
SUPPLY CIRCUIT BEFORE RETURNING THE Dxn°"'y 2f;303';:,°n2§'d"°°
Power 'onsumpuon: l2 watts
APPLIANCE TO THE CUSTOMER' Power gupply rating: DX-72I l: AC IZO V. 60 Hz

AC 230 V. 50 Hz

AC 220 -230 V/IZO V.
Switchable 50/60 Hz
AC 220 V. 60 Hz

AC 240 V. 50 HZ

DX-7l I 1: AC 230 V, 50 Hz
Dimensions (W x H x D): DX-721l: 435 x 9| x 308 mm
® (l7-I/8" X 3-9/I6">

DX-7lll: 435x91 x302 mm

Weight: DX-72] I: 4.! kg. (9.0 lbs.)
DX-7Ill: 4.0 kg.18.81bs.)
Specifications and external appearance are subject lo change without notice

because of product Improvements .

Page 2

DX-7211/71 ll

TABLE OF CONTENTS

Specifications .............
Service procedures
Caution on replacement of optical pickup .
Protection of eyes from laser beam during servicing
Laser warning labels ......
Chassis exploded view
Chassis exploded view parts list
CD Mechanism-exploded view ..
Parts list ...........
Block diagram ..
Microprocessor terminal description ..
IC block diagrams and descriptions
Adjustment procedures ..
Wiring diagram ........
Schematic diagram .
Printed circuit board view from bottom side ..
Printed circuit board pens list.
Packing view/parts list

mxrmurrsoowroro'a

SERVICE PROCEDURES
1. Safety-check out

(Only U.S.A. model)

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 the screw on the back
panel.

Specifications : 3.3Mohmi10% at 500V.

2. Voltage Selector (Rear Panel)

Worldwide models are equipped with a voltage selector
to conform to local power supplied.

Be sure to set this switch to match the voltage of the
power supply in your area before plugging in the unit.
Models without a voltage selector can only be used in
area where the power supply is the same as that of the
unit.

VOLTAGE SELECTOR
ll
220-230V [20V 220-23OV 120V
at AC 120V at AC 220-230V

Setting the voltage selector

1. Determine the proper for voltage for your area :
220V-230V or 120V.

2. If the preset voltage is not proper for WW area, insert
a screwdriver into the groove in the switch. Slide the
switch all the way to the right (120V) or to the left
(220-230V), which-ever is proper.

CAUTION ON REPLACEMENT OF OPTICAL PICK UP

The laser diode in the optical pickup block is so
sensitive to static electricitysurge current and etc.

During repair.carefulley take the following precautions.
(The following precautions are included in the service

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

or its reliability remarkably deteriaated.

PRECAUTIONS

l.Ground for the work-desk. 3.Grounding for the human body.

Place aoonductive sheetsuch as a sheet ol'copper
(with inpedance lower than lOMi'l) on the work-
l 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.

Be 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 thatpen'nits no leakage and
have the tip of the iron well-grounded.
5.Donotcheckthelaserdiodeterminalswith the
probe of a circuit tester or oscilloscope.

-2-

Page 18

DX-7211/7111

ONKYO CORPORATION

lnhmaflonal Sales Div.: 31 Sankyo-blld. 3-85, Asakusablshi, Tana-kn, TOKYO 111, JAPAN
TEL : 036820-5865 FAX : 036820-5869

1.ng U.S.A. CORPORATION
pp?! gvagdle River, NJ 07446-2286

(201)785 2600 Fax (201)934 7823

ONKYO EUROPE ELECTRONICS GmbH
Induslrlestrasse 18-20, 82110 Germorlng, GERMANY
TEL:089849320 FAX:0893493226

ONKVO FRANCE
Immeuble Le Diamam, Domains Tochnologique de Saclay, 4 Rue Rene Razel, 91892 SACLAY, FRANCE
TEL: (1)69 331400 FAX : (1) as 4135 84

OM3579 NS708 1600 Printed in Japan