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DENON

_......

SERVICE

MANUAL

STEREO

CD

PLAYER

MODEL

DCD-

1500

NIPPON

COLUMBIA

CO.

LTD.

TABLE

OF

CONTENTS

|

FEATURES?

fin

es

cibehes

lo

neu

Soe

eRe

disuse

ehetetecs

pobiadvode

02

SPECIFICATIONS!

fe:

nsce-c

syn

Geltediast

OS

tk

Pal

DUD

Re

ea

a

uae

eae

eae

eS

ue

NAMES

AND

FUNCTIONS

OF

PARTS

........0-.000-020e

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48~6

NOTE

FOR

HANDLING

OF

LASER

PIC-UP.

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ata

7~8

HANDLING

CONNECTION

AND

SAFETY

INFORMATION

FOR

THE

KSS-121A

OPTICAL:

PICKUP,

6:

ts

once

tacdts

Mas

atenhe

Ua

Wd

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Ove

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DISASSEMBLY

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13

MAINTENANCE

AND

ADJUSTMENT

PROCEDURE.

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13

~

20

FUNCTION

OF

IC

TERMINAL.

.........-.

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and

eaten

fy

ste

See

Rien

este

ers

21

FUNCTION

OF

SUB

CODE

OUTPUT

TERMINAL.

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TROUBLESHOOTING.

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eee

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23

~

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PARTS

LIST

OF

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.....

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uee

33

EXPLODED

VIEW

OF

FG-500

MECHANISM

UNIT...

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eee

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34

PW.BOARD

,......

0.00

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bee

eeedeeneenaeee

ee

35

~

37

WIRING

DIAGRAM

«6

2a

cnn

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cor

eo

Seat

hg

Aicoed

Pee

dada

dhanwadetawg

we

nee

38

SEMICONDUCTORS.

....

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ec

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39

WAVEFORMIN

THE

CIRCUIT

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ee

ee

te

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te

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SCHEMATIC

DIAGRAM

..

00.0

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ete

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4)

FEATURES

The

DCD-1500

compact

laser

disc

player

utilizes

a

unique

DENON

Double

Super

Linear

Converter

which

-

prevents

deterioration

of

sound

quality

in

the

PCM

playback

system,

assuring

accurate

reproduction

of

sound

recorded

on

compact

laser

discs,

in

the

studio

or

in

live

sound

production

areas.

The

parts

for

this

high

pertormance

disc

player

have

been

selected

with

careful

discrimination,

to

produce

realistic

playback

of

the

full

musical

production.

:

>

eer

SPECIFICATIONS

AubDIo

No.

of

channels:

Frequency

response:

Dynamic

range:

Signal-to-noise

ratio:

Harmonic

distortion:

Separation:

Wow

and

flutter:

Output

voltage:

DISCS

Playing

time:

Diameter:

SIGNAL

FORMAT

Sampling

frequency:

Quantization:

Transmission

bit

rate:

PICKUP

System:

Lens

drive

system:

Light

source:

Wavelength:

GENERAL

CHARACTERISTICS

Power

supply:

Power

consumption

Dimensions:

Weight:

FUNCTIONS

AND

DISPLAY

Functions:

Display:

Other

functions:

REMOTE

CONTROL

UNIT

Remote

control

system:

Power

supply:

External

dimensions:

Weight:

ACCESSOREIS

2

channels

5

~

20,000

+0.3

dB

Above

96

dB

Above

96

d&

0.0025%

{1

kHz}

95

dB

(1

kHz)

Less

than

the

measuring

timit

(0.001%

W.

peak)

2.0V

Compact

discs

are

used.

60

min/singel

side

(Maximum

79.8

min/single

side)

120

mm

44.1

kHz

over

sampling

16

bit

tinear/channel

4.3218

M

bits/sec

Objective

tens

drive

system,

laser

pickup

Two-dimensional

parallel

drive

Semiconductor

laser

780

nm

50/60

Hz,

Voltage

is

shown

on

rating

labei.

WW

434

(17.1

in)

W x

89

(3.5

in)

H

x

350

(13.8

in}

D

mm

6.0

kg

Direct

selection,

quick

selection,

programmed

selection,

repeat

playback

pause,

skip

monitor,

index

search,

A-B

repeat

Track

number,

index

number,

time,

and

program

Headphone

jack

{variable

level),

Variable

level/fixed

tevel

output

terminal

RC-1500

Infrared

pulse

system

3

vioc

Two

SUM-4

(standard

size

four)

dry

cell

batteries

60

(2.4

in)

W

x

150

(5.9

in)

H

x

17

(0.7

in)

D.

mm

“

98

g

(Inctudes

batteries)

Connecting

pin

cord

*

Design

and

specifications

are

subject

to

change

without

notice

in

the

course

of

product

improvement.

VAROITUS:

SUOJAKOTELOA

Ei

SAA

AVATA.

LAITE

SISALTAA

LASER-DIODIN,

JOKA

LAHETTAA

SILMALLE

VAARALLISTA

LASER-SATEILYA,

ADVARSEL:”

USYNLIG

LASERSTRALING

VED

ABNING

NAR

SIKKERHEDSAFBRYDERE

ER

UDE

AF

FUNKTION,

UNDGA

UDSAETTELSE

FOR

STRALING.

“

CLASS

I

LASER

PRODUCT“

Se

-|

NAMES.

AND

FUNCTIONS

OF

PARTS

eet

ee

ae

®

80

oo

Sata

——

0

© ©

0

0

© ©

000000

oe

""@

Power

Switch

(POWER)

Press

this

switch

to

turn

the

power

source

ON.

‘When

the

power

is

turned

ON,

(QQ)

will

light

up

in

the

RACK

NO

section

of

the

display

@.

if

no

disc

is

loaded

at

this

time,

(~~-——)

will

be

displayed

after

several

seconds.

number

of

tracks

on

the

disc

will

be

displayed

in

the

TRACK

NO.

section

of

the

display,

and

the

total

playback

time

will

be

displayed

under

the

TIME

section.

The

calendar

will

light

up

to

display

the

total

number

of

tracks.

@Q

Disc

Holder

The

disc

is

loaded

into

the

disc

holder

for

play

The

disc

holder

is

opened

and

closed

by

pressing

the

disc

:

holder

open/close

button

(A

OPEN/CLOSE)

@.

~

2

It

can

also

be

closed

by

Pressing

the

play

button

(>

3)

Disc

Holder

Open/Close

Button

..

(A

OPEN/CLOSE)

Se

“eject

the:

orward:

Press

it

again

to

close

the

holder

If

a

disc

is

loaded,

the

DISC

indicator

will

light,

the

total_._

@

If

the

disc

holder

is

closed

and

a

disc

has

been

loaded,

the

disc

is

rotated

for

several

seconds,

and

then

the

machine

enters.

STOP

state.

The

total

number

of

tracks

on

the

disc

and

the

total

playback

time

are

then

displayed

on

the

digital

display

@.

(4)

Display

@

The

display

area

consists

of

sections

for

the

track

number,

the

index,

the

playback

time,-and

the

calendar.

PAUSE

PLAY

:

Indicator

indicator

sais

cc

3e2f

oma

Os

-

Thewaninn

TE

~

ogc

_froc

[V2

To

T+

NTs

[eT]

Paseele

Nebel

hte

=

Oispteys

the

11a!

OVER

ingicator

Dlayback

time

of

7?

fncicator.

for

recorded

tacks,

the

remaining

Wacks

iret

(Discs

with

more

10

be

plavea

Program

nan

21

tracks}

Disiavs

the

wpaicalen,

Catender

remaining

playback

time-tor

the

current

wack

3+

te

sete

weet

i

{

i

©.

Remote

Control

Photosensitive

Window

©

This

window

receives

the

light

transmitted

from

the

wireless

remote

control

unit;

©

The

RC-1500

wireless

remote

control

unit

should

be

operated

while

it

is.

pointed

in

the

direction

of

the

photosensitive

window,

®

When

the

remote

control

is

operated,

the

remote

contro!

sensor

indicator

lamp

will

tight

in

the

display

area

@.

©

Fast

Reverse

Skip

Button

(

€4

)

©

Press

this

button

to

move

playback

in

fast

reverse,

@

When

the

machine

is

in

play,

sound

will

be

produced

during

the

time

that

the

button

is

being

pressed

and

the

fast

reverse

is

operating.

©

If

the

button

is

pressed

while

the

machine

is

in

the

Pause

state,

the

fast

reverse

will

operate

three

times

faster

than

the

reverse

speed

when

the

machine

is

in

the

play

state.

No

sound

will

be

Produced.

@

Fast

Forward

Skip

Button

(>>)

@

Press

this

button

to

move

playback

in

forward,

e@

When

the

machine

is

in

play,

sound

will

be

produced

during

the

time

that

the

button

is

being

pressed

and

the

fast

forward

is

operating.

©

If

the

button

is

pressed

while

the

machine

is

in

the

pause

state,

the

fast

forward

will

operate

three

times

faster

than

the

fast

forward

speed

when

the

machine

is

in

the

play

state.

No

sound

will

be

produced.

©

Track

Button

(

)

©

Press

this

button

to

move

the

pickup

forward

and

advance

to

the

beginning

of

the

desired

track,

®

If

the

TRACK

button’

is

pressed

during

playback

or

\

Pause,

the

pickup

moves

forward

to

the

beginning

of

the

track

that

corresponds

to.

the

number

of

times

the

button

was

pressed.

7

©

Track

Button

(

A)

‘

@

Press

this

button’

to

move

the

pickup

Babkeward:

to

return

to

the

beginning

of

the

desired

track,

@

If

the

TRACK

button

is

Pressed

during

playback

or

Pause,

the

pickup

moves

back

to

the

beginning

of

the

track

that

Corresponds

to

the

number

of

times

the

button

was

pressed.

@

index

Button

(INDEX)

©

Press

this

button

to

begin

playback

at

an

index

number

»

within

a

track,

.

®

Select

the

desired

index

number

by

using

the

ten-key

“pad.

.®

Program

and

Direct

Button

-

-

(PROGRAM

&

DIRECT)

.

Press

this

button

to

select

the

memory

program

function

direct

track

selection

function,

®

+10

Button

(+10)

®

Press

this

button

to

select

a

track

number

that

is

larger

than

11.

@

The[*10}button

is

used

in

conjunction

with

the

ten-key

pad

@®.

For

example,

to

select

track

number

15,

press

the

button.

and

then

[5]

on

the

ten-key

pad.

©

Similarly,

to

select

track

number

32,

press

[10]

,

(470!

and

then

press

(2].

®

Ten-key

Pad

@

These

buttons

are

pressed

for

direct

track

selection

or

to

Program

a

selection

into

memory.

For

example,

to

play

back

the

third

track

using.

the

direct

selection

function,

°

press

03)

on

the

key

pad.

Track

number

3

will

then

start

to

play.

To

play

track

number

12,

press

{410}

and

then

[2].

@

To

use

the

keypad

in

Program

mode,

first

press

the

PROGRAM

&

DIRECT

button

to

enter

the

correct

mode.

®

Play

Button

(

»

PLAY)

©

Press

this

button

to

play

a

disc,

@

When

the

PLAY

button

is

pressed,

the

{

>

PLAY!

indicator

fights,

and

the

number

of

the

track

being

Played,

the

index

number,

and

the

elapsed

playback

time

for

that

track

are

displayed.

The

calendar

lights

to

display

the

all

of

the

playback

tracks.

The

displayed

tracks

then

go

out

in

order

as

each

finishes

playing.

®

When

playback

of

the

last

track

has

finished,

the

>

PLAY}

indicator

goes

out,

and

the

machine

enters

Stop

state.

®

It

is

also

possible

to

use

the

PLAY

button

to

close

the

disc

holder

after

a

disc

has

been

inserted.

Playback

then

begins.

®

Pause

Button

( |

PAUSE)

@

Press

this

button

to

stop

the

playback

temporarily.

©

If

the

PAUSE

button

is

pressed

during

playback,

the

play

is

stopped

temporarily,

the

PLAY

lamp

goes

out,

and

the

PAUSE

iamp

lights.

©

To

end

the

pause,

push

the

PLAY

key

®.

@®

Stop

Button

(

»

STOP)

©.

Press

this

button

to

stop

the

playback.

;

©

The

rotation

of

the

disc

stops,

and

the

total

number

of

tracks

and

the

total

playback

time

are

read

Out

on

the

TRACK

NO,

and

TIME

sections

of

the

display.

m)

During

programmed

playback,

the

total

number

of

tracks

programmed

in

memory

and

the

total

pro-

grammed

performance

time

are

displayed.

@

A-B

Repeat

Button

(A

—

B)

©

Press

this

button

to

perform

repeated

playback

of

a

desired

section

between

two

specified

points.

@.

Repeat

Button

(REPEAT)

©

Press

this

button

to

repeat

playback.

@

When

the

REPEAT

button

is

pressed,

the

[REPEAT]

indicator

tights

and

repeated

playback

is

performed.

for

ali

of

the

tacks

on

the

disc.

During

programmed

playback,

all

of

the

tracks

programmed

into

memory

are

played

repeatedly.

Press

the

REPEAT

button

again

to

cancel

the

repeat

operation,

@®

Call

Button

(CALL)

©

Press

this

button

to

verify

the

track

numbers

that

have

been

programmed

into

memory.

@

Time

Mode

Button

(TIME

MODE)

@

This

button

is

used

to

select

the

type

of

information

to

be

read

out

under

the

TIME

section

of

the

display.

Either

the

elapsed

playback

time

of

the

current

track,

the

remaining

playback

time

for

that

track,

or

the

playback

time

for

the

remaining

tracks

on

the

disc

can

be

selected,

Normally

the

elapsed

playback

time

of

the

current

track

is

displayed.

}f

the

button

is

pressed

once,

the

[SINGLE

}

indicator

lights

and

the

remaining

time

left

to

play

on

the

track

is

displayed.

If

the

button

is

pressed

again,

the

“SINGLE

|

indicator

goes

on,

and

the

[TOTAL]

indicator

goes

on,

and

the

playback

time

for

the

remain-

ing

tracks

left

on

the

disc

is

displayed.

If

the

button

is

pressed

once

more,

the

|

TOTAL

j

indicator

goes

out

and

the

display

returns

to

the

elapsed

playback

time

for

that

track,

{f

the

button

is

pressed

so

that

the

[TOTAL

|

indicator

fights

during

programmed

playback,

the

playback

time

for

all

of

the

remaining

programmed

tracks

is

displayed.

@

Clear

Button

(CLEAR)

©@

Press

this

button

to

correct

the

programmed

contents

of

memory.

»

‘@.

Timer

Button

(TIMER)

*@

This

button

is

used

in

conjunction

with

an

audio

timer

to

perform

timer

playback

at

the

specified

time.

®

Volume

adjustment

knob

@

This

knob

is

used

to

adjust

the

output

jevel

(volume)

of

the

headphone

jack.

@

Headphone

Jack

(PHONES)

'

©

When

using

headphones,

please

listen

to

them

at

an

appropriate

volume.

(Headphones

are

sold

separately.)

@®

Output

terminal

(OUTPUT)

®

Connect

the

output

terminal

to

the

input

terminal

of

the

amp.

@

Sub

code

output

terminal

(SUB

CODE

OUT)

®

This

output

terminal

will

enable

the

more

effective

use

of

the

compact

disc

player

in

the

future,

|

NOTE

FOR

HANDLING

|

LASER

PICK-UP

DESCRIPTION

OF

THE

COMPONENTS

CROSS-SECTIONAL

DRAWING

OF

THE

OPTICAL

PICK-UP

+

x-axis

+

Z-axis

I

objective

fens

\

objective

tens

TRK/FCS

coil

°

concave

lens

t

base

magnet

optical

bos

actuator

cover

8

cylindrical

lens

actuator

harness

i

NPBS

oie

photodiode

photodiode

PD

PWB

re

fe

ipi

ie

{6-element)

Laser

Diode

Pwe

POD

harness

LD

harness

7.

Labet

7-1.

Serial

number

/

¢

}

f

f

N

\

This

denotes

the

serial

number

used

for

quality

control

in

the

manufacturing

plant.

7-2.

Labet

ay

year

.

‘

(last

figure)

day

month

i

quality

control

No.

Oo

ay

:

10

1

107!

ao

oOo

a3

For

example,

56.5

mA

wilt

be

expressed

as

565.

7-3.

Position

of

the

labels

serial

number

Se

ELECTRICAL

PIN

CONNECTION

1.

PD

harness

12345678

JST

Veco

A

YEL

1

2

3

4

5

6

7

8

2.

Actuator

harness

1

Focus

4

2

Tracking

3

9

i

Pal

9

|

|

FCS

+

:

Lens

moves

toward

the

disc

TRK

+

:

Lens

moves

toward

the

center

of

the

disc

3.

LD

harness

Pin

No.

}

description

+

reference

monitor

;

GND

|

laser

FOR

THE

KSS-121A

CG,

4aL

PICK-UP

1.

Handling

Instructions

:

Please

read

the

following

instructions

Carefully

before

handling

pick-ups.

1)

Handle

with

care

The

pick-up

KSS-121A

is

assembled

and

precisely

adjusted

using

a

sophisticated

manufacturing

Process

in

our

plant.

Keep

the

pick-up.

protected

from

vibration

and

impact.

Do

not

disassemble

or

attempt

to

re-adjust

it.

Hold

the

optical

base

(aluminum

diecast)

when

handl-

ing

it.

Do

not

touch

the

PD

and

LD

PWB

(Printed

Wiring

Board).

2

Storage

Do

not

store

the

Pick-up

in

dusty,

high-temperature

or

high-humidity

environments.

3

Laser

Diode

Protect

Your

Eyes

Do

not

Jook

at

the

taser

light

beam

through

the

objective

lens

directly

nor

another

lens

or

a

mirror,

The

taser

beam

may

damage

the

human

eye,

since

the

intensity

of

the

focusd

spot

may

reach

1.3%

10"

W/em2

even

if

the

intensity

at

the

objective

lens

is

400

YW

maximum,

Poison

:

The

LO

chip

contains

As

(arsenic),

a

poison.

Aithough

the

poison

is

relatively

weak

and

the

amount

is

small,

avoid

putting

the

chip

in

acid

or

an

alkali

solution,

heating

it

over

200°C

or

Putting

itjinto

your

mouth,

Avoid

surge

current

or

electrostatic

discharge

The

LO

may

be

damaged

if

a

large

current

is

applied

to

it,

even

if

only

a

short

pulse.

For

safe

handling

of

an

LD,

grounding

the

human

body

and

Measuring

equipment

\

is

strongly

recommended.

Make

sure

that

there

is

no

Surge

Current

in

the

LD

driving

circuit.

The

PINs

of

the

LD

are

short-circuited

for

Protection

during

shipment,

To

open

the

short

Circuit,

remove

the

soldering

quickly

with

@

soldering

iron

whose

insulation

resistance

is

larger

than

10

MQ

after

connection

to

a

suitable

“APC

Circuit.

The

temperature

of

the

sildering

iron

should

be

less

than

320°C,

Note:

“APC

(Auto

Power

Contro!)

HANDLING,

CONNECT

ch

AND

SAFETY

INFORMATION

4)

Actuator

The

performance

of.

the

actuator

may

be

effected

if

magnetic

material

is

located

nearby,

since

the

actuator

has

a

strong

magnetic

circuit,

Do

not

permit

dust

to

enter

through

the

gap

of

the

cover.

Cleaning

the

lens:

Lens-cleaning

paper

with

50

:

50

mixed

solvent

of

IPA

(Isopropyl

atcohol}

and

Freon

(freon

113.

CCI

F-CC1F)

is

recommended.

:

2.

Connections

1)

How

to

mount

the

pick-up

:

Use

the

reference

plane

as

shown

in

the

assembly

draw-

ing

when

mounting

the

pick-up

in

the

transportation

mechanism.

No

special

adjustment

such:

as

skew

adjust-

ment

or

grating

angle

adjustment

is

required.

The

meta!

bearing

of

Cu-compound

sintered

alloy

is

impregnated

with

oil.

You

do

not

normally

need

to

lubricate

the

bushing.

If

you

need

to

lubricate,

use

Hydrofluid

EP-56

(Mitsubishi

Oil),

2

Harness

and

connector

Use

the

specified

connector

housings

for

electrical

connections.

Care

should

be

taken

to

see

that

the

con-

nector

of

the

LD

harness

is

clamped

tightly,

since

a

loose

connection

may

cause

a

serious

damage

to

the

LD.

There

may

be

a

deterioration

in

the

eye

pattern

if.a

digital

noise

source

such

as a

microcomputer

is

position-

ed

near

the

PD

harness.

‘

3)

Safety

regulations

This

pick-up

is

designed

to

meet

general

safety

regula-

tions.

For.

the

pick-up

as

installed

in

a

set

to

be

certified

‘as

meeting

the

safety

regulations

of

a

Particular

country,

however,

application

will

have

to

be

made

to

the

proper

authorities.

)

e

Removal

of

Top

Cover

|

2

Push

three

hooks

on

the

bottom

of

the

Front

Panet

Remove

two

screws

on

the

front

and

tow

screws

on

the

witha

@

screwdriver,

and

draw

the

Panel

frontward

rear

of

Top

Cover

ed

and

detach

the

Top

Cover

by

means

releases

hooks

to

detach

the

Front

Panel

from

the

of

Hifting

it.

chassis.

Further,

the

Front

Panet

and

the

P.W.B’s

are

linked

with

connectors,

remove

them.

as

necessary.

©

Removal

of

Front

Panel

(Figure

1)

1

Remove

three

screws

68)

and

three

screws

6)

secur-

ing

Front

Panel.

(Figure

1)

Front

panet

Wy?

i

i

{

Fig,

1

3

To

remove

the

Front

Panel

entirely

from

the

chassis,

unlink

the

connectors

between

the

chassis

and

the

display

P.W.B.mounted

on

the

Front

Panel.

(Figure

2)

ee

a

Chassis

Connector

a

(

Fig.

2

©

Removal

of

Display

P.W.B

from

the

Front

Panel

2

Detach

the

P.W.B.employing

FL

tube,

then

push

the

1

Remove

eight

screws

6)

and

@

—6each

3x

10

mm

5

snap-fit.

in

the

direction’

.arrow

shows

to

remove

CBTS(P);

2

each

3

x

6

mm

CBTS(S)

holding

the

Display

P.W.B.(KU-5770).

(Figure

3)

P.W.B.

ma

+e

Disptay

P.W.Board

FL

tube

Snap-fit