Onkyo DXC 600 Service Manual

Page 1

DX «6600

ONKYO® SERVICE MANUAL

COMPACT DISC AUTOMATIC CHANGER
MODEL DX-C600

BUDN, BUD

120V AC, 60 Hz

BUU, BUUX

110/120/220/240V 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 COMPONENTS WITH ONKYO PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL.

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

ONKYO l
Mllllll BlllllPlllllllISj

l
l

SPECIFICATIONS

Audio Characteristics

Number of Channel ................
Frequency Response , .
Signal-tDANoise Ratio I
Channel Separation ................
Total Harmonic Distortion ...........
Wow and Flutter
Ouptut Level ....................
Signal Format

Sampling Frequency ...............
Quantization ....................
Filter .........................

Disc
Diameter .......................

Tracking Pitch ...................
Play Time ......................
Tracking System ................

General

Power Requirements
USA & Canadian Models
Worldwide Model

Power Consumption ...............
Dimensions W x H x D) ............
Weight ......................
Supplied Accessories ...............

2 (Stereo)

20 - 20,000 Hz

96dB (at 1 kHz)

85 dB (at I kHzl

0.63% (at 1 kHz]

Below threshold or musurability
2 Volts, r.mts.

88.2 kHz

16 Bits

Two times over sampling
Digital Filter + Analogue Filter

120 mm (4~3/4"I

500 - 200 rpm (inside - Outside)
l.6 um

60 Min.

. Non-Contact Solid State Laser

PCM Wavelength 0.79 pm

AC 120V, 60 HZ

AC 110, 120, 220, 240V switchable, -
50/60 Hz

14 Watts

435 x114 x 348mm

17-1/8" x 471/2" x 13-1 16

66 kg, 14.6le

Output Signal Cord

Remote Control Transmitter RCVIOQC
"AA" size (UM73) battery x 2

CD Magazine

Instruction Manual

Specifications are subject to change without notice.

Page 2

DX -C600

TABLE OF CONTENTS

Specifications .............................. 1
Service procedures ........................... 2
Note on compact disc ......................... 3
Display indicators ........................... 4
Protection of eves from laser beam
during servicing ........................... 5
Certification label ........................... 5
Caution on replacement of pickup ................ 6
Trouble shooting guide ........................ 7
Circuit descriptions , V . . . . . . . . . . . . .L ......... 10
Block diagram ............................. 17
IC descriptions ............................ 18
Exploded view
Changer mechanism ....................... 22
CD mechanism .......................... 24
Chassis ............................... 25
Magazine .............................. 27
Parts list ................................ 23
Packing view .............................. 28
Disassembling procedures ..................... 29
Adjustment procedures ................... 29
Printed circuit board view ............ ......... 33
Control circuit pc board .................... 33
Main circuit pc board ..................... 37
Schematic diagram .......................... 35
Control circuit . . . . .................... 35
Main circuit ............................ 39
Printed circuit board-parts list .................. 41

SERVICE PROCEDURES

1. Safety-check out (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 cable and chassis.

Specifications: more than 10Mohm at 500V.

2. Procedures for replacement of flat packaged 103
1. Tools to be used:
(1) Soldering iron .. .. Grounded soldering iron or
soldering iron with leak re-
sistance of 10 Mohms or

more.

Form of soldering irons tip:

(2) Mngtlfying glass . .. for checking of finished

works

(3) Tweezers ........ for handling of IC and
forming of leads

(4) Groundingring. . . . Countermeasure for electro-
static breakdown

(5) Nipper ......... for removing defective IC

(6) Small brush ...... for application of flux

3. Work Procedures:

(1) Remove the defective lC
Cut all leads of the defective lC one by one using
a nipper and remove the IC.

(2) Clean the pattern surface of the PC board.
Get rid of the remaining leads and solder.

(3) Check and from the leads of the new flat pack.
aged [C to be installed.
From every lead on the new lC using a pair of
tweezers, so that all of them are aligned neatly
without being risen, twisted or inclined toward
one side. Especially the rising portion of every
lead must be formed with greatest care.

|c IC E lC //
\
(Rising) (Twisting) llncliningi

Fig. 2

(4) Apply flux to the PC board.

Apply flux to the pattern surface of the PC board
which has been cleaned, as shown in the illustrations
The area to be applied with flux is the portion of
about 2.5mm in width where the lCs leads are to
be soldered.

Be careful to apply minimum amount of flux
required so as not to smear it on unwanted areas.

awe/mg

About 2.5 mm
Fig. 3

(5) Temporarily tighten the [C
Carefully align the pattern and [Cs leads, so that
the IC will be temporarily tightened to the pattern
on the four leads at the corners. At this time, so]-
dering is required, but no need to apply soldering
material.

Fig. 4