Kenwood KDC-C600 User manual

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2

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COMPACT

DISC

AUTO

CHANGER

KENWOOD

KDC-C600

SERVICE

MANUAL

©1992-3

PRINTED

IN

JAPAN

B51-6448-00

(T)

3674

Metallic

cabinet

(A01-2556-02)

KENWOOD

ofise

CLEAN

PULS!

FIVE

CIROWIT

COMPACT

eee

ACs

CH4NGER

KOC-cEeon

10

OSC

-1B8IT-4

0/4

CONVERTER

OSE,

Knob

(K24-1042-04}

Panel

ass’y

(A20-7816-03)

Bracket

(L)

Bracket

(R)

(J19-4444-04)

(J19-4443-04)

Cord

with

plug

(E30-375

4-05)

Mounting

hardware

ass’y

Disc

magazine

Screw

set

(J21-7328-04)

(J19-4409-12)

(N99-1576-05)

Adhesive

tape

(J69-0503-04)

:

;

;

Optional

ds

<

magazine:

KCA-M1

16

KDC-C600

CONTENTS

CONNECTION

said

idicet

ied

eae

aibeecn

pedal

s/eeoee

eee

oe

2

PC

BOARD

(Foil

side

View)................ccceccc

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23

OPERATION)

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CIRCUIT

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25

LOADING

COMPACT

DISCS.

...............0

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centers

3

CIRCUIT

‘DIAGRAM:

(212)

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AA

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itened

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EXPLODED

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CIRCUIT

DESCRIPTION............

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MECHANISM

DESCRIPTION

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PARTS:

LIST:

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35

ADJUSTMENT

(MECHANISM)

.........0...00:00

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teeter

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21

SPECIFICATIONS.

v.3)

crceseets

eee

ened

secede

Back

cover

CONNECTION

@

When

operating

or

checking

this

unit,

use

CD

changer

control

receiver,

KCA-R10,

etc.

as

a

control

unit.

KDC-C600

Output

@

Changer

extension

cord

(5m)

Changer

control

Cl

|

a

[jo

1

Compact

disc

auto

changer

control

unit

(optional)

SPI,

a

KDC-C600

OPERATION

@

Be

sure

to

turn

the

screw

on

the

bottom

of

the

unit

according

to

the

changer’s

instalation

orientation

(horizontal

or

vertical).

(The

spring

is

set

for

horizontal

installation

when

the

unit

is

shipped

from

the

Bottom

view

factory.)

‘(a

CAUTION

ie

The

screw

will

not

la

(®)

1

turn

any

further

|

once

it

locks

@

If

the

screw

is

v

turned

with

the

magazine

inserted,

the

unit

may

be

damaged

Be

sure

to

eject

the

magazine

before

turning

the

screw

Turn

the

screw

while

pushing

the

screwdriver

[lightly

it:

z

®@

Vertical

installation

(Turn

the

screw

180°

to

the

left.)

Claw

Turn

the

screw

to

the

left

until

it

stops.

(Claws

are

observed

through

the

stot.)

®

Horizontal

installation

(When

switching

from

a

vertical

to

horizontal

installation,

turn

the

screw

180°

to

the

right.)

Turn

the

screw

to

the

right

until

it

stops.

LOADING

COMPACT

DISCS

isc”

mark

facing

up

To

remove

Labeled

surface

10

discs,

one

in

each

stot

@

To

remove

a

disc

from

the

magazine,

press

on

the

rear

of

the

disc

so

that

it

slides

out

the

front

Do

not

use

too

much

force

or

the

disc

may

fly

out

the

front

of

the

magazine.

@

Discs

are

number

in

sequence

(1,

2,

3...)

from

the

bottom

slot

up.

Insert

discs

into

the

magazine

with

their

labeled

sides

facing

up.

A

CAUTION

8

cm

(3in)

CDs

cannot

be

used

in

this

unit.

If

an

8

cm

(3

in}

CD

adapter

ts

used,

the

disc

will

not

eject

@

insert

the

disc

magazine

into

the

unit.

®

Open

the

door

of

the

unit

insert

the

disc

magazine

titl

it

clicks.

£JECT

switch

®

To

remove

the

disc

magazite,

Open

the

door

and

then

press

theeJ

ECT

switch.

The

magazine

will

not

eject

if

the

dior

1s

not

completely

open.

@

Oust

entering

the

unit

will

make

the

laser

pickup

dirty

and

adversely

affect

performance.

Always

be

sure

to

keep

the

door

closed.

A

CAUTION

<

When

using

a

new

disc

>

@

Before

using

a

new

disc,

be

sur

t@

check

for

burrs

around

the

edges

of

th

chisc’s

center

hole

and

outer

circumfernc

e

(see

diagram

at

left).

If

burrs

are

preent,

use

a

ballpoint

pen

or

similar

instrumeit

tO

remove

them.

If

a

disc

is

used

with

burrs

stil

attached,

the

disc

may

not

it

poroperly

im

the

player

or

disc

magazine,

«

t

he

sound

may

tend

to

skip

during

playbac

Center

hole

ye

Outer

edge

<

Disc

accessories

>

©

There

are

several

types

of

disc

accessories

‘stabilizers,

protective

seals,

es,»

on

the

market

designed

for

various

purposes

such

as

sound

quality

improvemenian

d

disc

protection.

Use

of

such

disc

accessories

w:li

change

the

thickness

or

outs

dimensions

of

the

disc

with

the

result

that

ihe

disc

will

not

conform

to

Stn

ard

specifications.

Discs

with

this

type

of

accessory

altached

may

cause

the

jgc>

Changer

io

malfunction

and

shouid

therefore

not

be

used

with

this

unit

KDC-C600

BLOCK

DIAGRAM

JOVSAYSILNI

YEONVHO

dd

yo

ONDv

4?

QNDHO

dnsneg

4SYHO

SLAW

NOOHO

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Oovivd

WIOHD

|

|

|

|

a

‘

est

ZHAPPES

Ob

HOLOW

JIONIdS

©

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py

lerenie)

PJ

satus

SsfE

PT

YOLOW

0318

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y3ima

OH

Wwu15oia

Viva

Y3LY3BANOO

wid

you

A9EZEOL

viyg

¥OSS300Ud

dIHO

|

¥OG

YOLVNLOV

400

ONIMOVEL

oxn08

&

SIOLLVL

¥OLVNLOV

SNOOF

=e

—7

pniavor

4

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Ls

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VHOAW

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co

130Ng

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O-O-@

HOLIMS

LIWIT

MSM

mena

eee,

HOLIMS

NMOG

sh

4LOHd

3

($710)

YOSNIS

LOHd

QVO1

XSIG

MS

WHY

>

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na

130

“1OA

=z

ape

8

OAs

ts

5

alg

pons

<—

—?asin

HOLIMS

WILINI

VHOSW

MSOW

of

HOLIMS

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isu

|

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3LNW

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+9

ONIDNVHO

sid

TOXLNOD

LIIHS

ADVLIOA

Nosh

Device

KDC-C600

CIRCUIT

DESCRIPTION

Use

and

Function

Operation

and

Condition

2S5B1050

Audio power

sw

Supplies

14

B

to

MD.

2SB941

Servo

power

and

mechan:

ism

up/down

driver

power

AVR

DTC124EK

CD-CH

ON/OFF

SW

DTC124EK

CH-CH

RST

SW

DTA124EK

Eject

SW

DTC124EK

2S5B1188

Audio

power

Sw

6

V

SW

DTA124EK

Muting

driver

DTC

24EK

BU

detector

28C2412K

Same

as

02

751

1

2GF-

740-3BE

CD-CH

Gischanin

control,

control

of

communications

with

faechenern

con-

troiler,

control

of

communications

with

head

unit

sisted

p-COM

S-

80737AN-

DI

pe

com

RST

IC

Reset

occurs:

when

VOD

becomes

3.

7

V.

SN74H1C367ANS

_

Interface

buffer

TA7291P

Motor

driver

|

Uprdown

«

operation.

M5278D05

CD

PLAY

ER

UNIT

(X32-221

Device

5

V

AVR

VDD

for

microcomputer

0-00)

Use

and

Function

Operation

and

Condition

i

TA8191F

RF

amp

RF

signal

generation,

focusing

&

tracking

servo

TC9236AF

EFM

demodulation,

error

detection

&

correction,

snaie

data:

output,

disc

motor

servo,

focusing

&

tracking

servo

control,

search

control.

Signal

processor

ANS388SR

+-

Actuator

driver

|

Drives

focusing,

tracking,

sled,

spindle

and

actuator

TA7291F

Motor

drive

Loading

and

ejection

control.

75008GB-672-384

Bb

COM

CD

mechanism

control.

SM5870AS

DIA

converter

1-bit

digital-

-to-

-anaiog

converter,

NJM4580E

Low-

pass

filter

TA78LO5F

3-terminal

regulator

Generates

-

+

+5

V

for

audio

circuitry,

TC

7SU04F

Inverter

Inverts

LRCK.

TC74ACO4F

Audio

pulse

output

butter.

Inverter

r

2SB624

(BV3)

|

Laser

power

|

«contol

2SA1037K

|

renmoseature

detector

DTC

248K

|

Spindle

gain:

SW

ix

ON

with

8

cm

disc,

OFF

with

12

cm

n

disc.

28C2412K_

Focusing

error

hold

Upon

detection

of

scratch,

goes

ON

to

nold

focusing

|

error.

OTA

24EK

Level

conversion

of

disc

scratch

detection

pulse

DTCI14YK

Switches

low-

frequency

gain

of

tracking

servo

between

play

anc

:search

_

modes.

Logic

inverter

Inverts

he

COM

output

logic

t

to

contro!

Q?

Reference

potential

Generates

4.2

Vin

collaboration

with

TA81S1F.

generation

Gain

SW

Controls

high-

frequency

gain

of

tracking

servo

Gain

SW

Reduces

tracking

servo

upon

detection

of

scratch.

Clock

SW

Turns

16

MHz

master

clock

ON/OFF.

Turns

+5

V

for

servoidigital

circuitry

ON/OFF.

2801624

|

Regulator

Generates

+9

V

for

audio

circuitry.

KDC-C600

CIRCUIT

DESCRIPTION

Operation

and

Condition

Device

Use

and

Function

Q15

DTA124EK

Audio

muting

control

Drives

Q16

and

Q17

based

on

level

conversion

of

muting

signal

from

p-COM.

O16,

17

2SD1757K

Audio

muting

OTC124EK

PLL

contro!

019

DTC124EK

D/A

reset

DTC124EK

Emphasis

SW

Upon

detection

of

scratch,

sets

PLL

phase

comparator

output

to

Hi-Z.

Releases

reset

of

D/A

converter

in

synchronism

with

the

rise

of

master

clock.

Inverts

the

logic

of

emphasis

control

output

from

IC2.

IC3:

75112GF-740-3BE

(X29-2310-00)

SYSTEM

MICROCOMPUTER

1:

Terminal

pin

layout

nN

=

e

<< <<

nn

ee ee

[kt

[>=

<«

<

|

mn

#

£26

re

és)

ea

Sh

lea

es

se

SI

SUS

Seles

sl

<x]

ol

om]

mlm]

co]

ol]

mo

oo

cy

ott

Q.|

A.

Qual

Quf

Qu]

Quad

me]

me

Qu)

uj

Quy Quy

a

=

foe)

Ce

re

i:

*

So:

~-

won

et

ODN

cr

wowoVDwonMmnwnwn

wm

Wo

ww

stcon

ett}

sip

P40

2

0

50

P132

P53

|

ag

poles

PONB3

P52

4

4g

|_P120

PONBI

P51

5

47

P121

pa

6

46

P122

MUTE

Sean

RESET

|

45

{—P123

x2

;

44

[aq

POO/INTS

,

DE OH

X1

SCK

.

a

“1

;

43

|_POl/SC

a

5a

10

75112GF-740-3BE

7

Mesa

DATAC

11

41

Passe

DATAH

P61

12

40

|_P20/PT00,

REQe

€

P60

3

39

P21/PTO1

CH+

P73

if

3

|

P22/Pc

CH:

7

7

15

ig

es

PONB2

re

36

jell

PDOWN

P70

Soucy

os

17

35

bell?

ARMSW

-

18

py

g

as

DSPS

8

2

.

19

33

jet

THOL

EPHOTO

or

NO

ete

wD

or

DDI

AS

Ns

NN NN

NN CS

N

NN

CS

NN

on

ond

oD

=] =]

S|]

ool

aw

aeslalsisle

giSiSsse

2

a}

af

a

alata}

=)

oy

A)

mpSl

oy)

&

apo}

ala,

ao

oz

E

2

é

=

|

mio

lo

ln

o

:

aA

i=

—

ls

[oo

ae

tx

Ww

Qo

x

a.

Also

used

as:

KDC-C600

CIRCUIT

DESCRIPTION

Signal

Name

Application

STCON

MD

p-COM

stop

signal

output.

L

for

stop

mode.

Not

used.

Not

used.

Not

used.

Not

used.

Not

used.

Hardware

reset

terminal.

System

clock

oscillator

connection.

4.

19

MHz.

System

clock

oscillator

connection.

4.

19

MHz.

Not

used.

i

oa

Not

used.

Not

used.

Not

used.

Not

used.

obi

+

Not

used.

Not

used.

Not

used.

7

Not

used.

t

used.

OOOO

OJSO;OJSO;LOJOJ;O}O;

t

used

t

used

Disc

down

detection.

fey

when

chucked.

Mechanism

deck

reference

position

detection

(EJECT).

Not

used.

Not

used.

GND

GND.

EJECT

Eject

SW.

my

with

switch

ON.

MGSW

_

Magazine

detection.

“qe

when

magazine

iS

present.

CHCON

Changer

ON.

“’L"’

for

ON.

SRQ

Communication

service

request

from

MD

He

COM.

_—

‘

for

request.

Not

used.

PHOTOA

MD-side

loading

photosensor.

“H"™

while

disc

is

passing.

|

EPHOTO

Magazine-

side

photosensor.

“"H’'

while

disc

is

passing.

DSPS

MD

position

selection

photosensor.

“Ln

in

normal

stop

position.

ARMSW

Loading

arm

SW.

“HY

during

pulling

disc

in.

PDOWN,

Power

down

detection.

OE

indicates

momentary

power

down.

PONB2

Peripheral

circuit

power

ON

‘SW.

H:

_power

ON.

L:

OFF.

CH

—

Negative

terminal

of

disc

change

motor.

CH+

REQC

Communications

request

line

to

head

unit.

Active

“Le

:

“DATAH

Positive

|

terminal

of

disc

change

motor.

Communications

data

line

from

head

unit.

DATAC

Communications

data

line

to

head

unit.

CHCLK

Communications

clock

fine

with

head

unit.

REQH

Communications

request

line

from

head

unit.

Active

ca

igs

KDC-C600

CIRCUIT

DESCRIPTION

¢

Also

used

as:

i

Application

Not

used.

Muting

output.

H:

MUTE

ON.

L:

MUTE

OFF.

Not

used.

Peripheral

circuit

power

ON

SW.

H:

OFF.

L:

ON.

Head

unit

communications

IC

power

ON

SW.

H:

ON.

L:

OFF.

+

C\OSOLOlOlOO;LO;/O;O;Ol1O

Not

used.

Not

used.

Not

used.

Not

used.

Not

used.

+

Not

used.

Not

used.

Connected

to

VDD

+5

V.

7

Communication

request

to

MD

p-COM.

Active

‘‘L"’.

Communications

clock

output

to

MD

p-COM.

No

more

than

524

kHz.

Data

line

from

MD

p-COM.

LSB

first.

Data

line

to

MD

p-COM.

LSB

first.

Not

used.

MD

p-COM

reset.

3:

Key

matrix

This

set

does

not

have

a

key

matrix.

4:

Initial

setup

This

set

does

not

need

destination

setup.

But,

at

the

time

of

initialization

(reset),

care

should

be

used

in

the

following

points.

(

This

set

does

not

perform

initial

up/down

operation

unless

all

of

the

four

sensors

(PHOTOA,

EPHOTO,

DWSW,

ARMSW)

are

clear

[i.e.

there

is

no

disc

in

the

magazine).

This

set

does

not

perform

disc

ejection

while

the

magazine

has

already

been

ejected.

If,

when

you

attempt

to

reset

it,

there

is

a

disc

inside

the

MD

and

the

magazine

has

been

ejected

in-

sert

the

empty

magazine

or

eject

the

disc

in

the

test

mode

described

in

5,

then

reset

the

set.

KDC-C600

o~

CIRUIT

DESCRIPTION

5:

Test

mode

The

operation

test

mode

with

the

specifications

described

below

can

be

initiated

using

the

CD

changer

fabricated

by

us.

This

test

mode

functions

when

the

head

unit

is

provided

with

the

changer

control

function.

(The

test

mode

may

not

function

with

certain

sets.)

1.

Test

mode

initiation

method

Make

sure

that

no

disc

is

present

in

the

mechanism

deck.

Fully

open

the

CD

changer

door

(in

order

to

turn

door

switch

$32

ON).

Press

and

hold

the

magazine

eject

switch

on

the

CD

changer,

and

press

the

reset

switch

on

the

head

unit.

First

release

the

reset

key

alone,

then

release

the

eject

key.

Start

up

the

head

unit

and

select

the

changer

mode.

On

this

point,

the

head

unit

display

should

show

‘'E-88"".

(The

display

may

not

be

proper

with

certain

head

units.

In

addition,

if

the

connection

check

method

is

not

normal,

the

operation

may

not

occur.)

2.

Operation

In

the

test

mode,

disc

loading,

ejection

and

the

mechanism

deck

up/down

operations

can

be

performed

as

desired

using

the

key

operations

listed

below.

Every

operation

occurs

only

while

the

corresponding

key

is

ON,

and

stops

when

the

key

is

OFF.

[Loading

operation]

Press

the

forward

track

search

key

to

start

disc

loading

operation.

This

operation

is

canceled

(stopped)

when

the

key

is

switched

OFF.

gh

[Ejection

operation]

Press

the

reverse

track

search

key

to

start

disc

ejection

operation.

This

operation

is

canceled

(stopped)

when

the

key

is

switched

OFF.

{Mechanism

deck

up

operation]

Press

the

disc

select

(+)

key

to

move

the

mechanism

deck

toward

disc

No.

10.

This

operation

is

canceled

(stopped)

when

the

key

is

switched

OFF.

(Mechanism

deck

down

operation]

Press

the

disc

select

(—)

key

to

move

the

mechanism

deck

toward

disc

No.

1.

This

operation

is

canceled

(stopped)

when

the

key

is

switched

OFF.

co

wo

.

Test

mode

cancellation

method

Normal

operation

can

be

resumed

by

canceling

the

CD

changer

mode,

resetting

the

set

or

turning

Acc

OFF.

However,

it

should

be

noted

that

the

microcomputer

of

the

CD

changer

starts

reset

operation

when

the

mode

is

reurned

to

normal

operation.

Therefore,

if

a

disc

is

left

inside

the

mechanism

deck,

a

trouble

such

as

double

insertion

of

discs

miy

occur.

To

prevent

this,

make

sure

that

no

disc

is

left

inside

the

mechanism

disc

before

returning

to

the

normal

operation

mode

(Double

insertion

ill

not

occur

if

the

mechanism

deck

is

stopped

in

a

position

with

which

the

magazine

is

capable

of

accommodating

he

csc.)

4.

Other

notes

The

operation

does

not

occur

with

a

remote-controlled

set

such

as

the

KCA-R1

and

KCA-R20.

Even

with

ordinary

sets,

iper

ation

by

rernote

control

is

not

possible.

The

test

mode

should

be

run

with

a

stable

power

supply.

In

case

of

power

down,

be

sure

to

press

the

reset

key

ard

restart

from

the

beginning.

lf

communications

with

the

head

unit

is

not

available

after

quitting

the

test

mode,

reset

the

set.

lf

no

Operation

occurs

after

the

mode

start

operation,

reset

the

set

to

make

doubly

sure.

KDC-C600

CIRCUIT

DESCRIPTION

IC6:

75008GB-672-3B4

(X32-2210-00)

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