Kenwood DP-M87 Manuel utilisateur

ner

KENWOOD

SERVICE

MANUAL

Een

Metallic

cabinet

Panel

(Tray)

Panel

(Front)

{A01-3079-11)

(A29-0351-02)

(A60-0447-12)

some

aus

Ber

caed

Pasta

Foot

(Front)

Escutcheon

Front

glass

{J02-1040-05)

(BO07-2249-03)

(B10-1984-03)

Cord

with

connector

(E30-2631-15)

Rectangular

receptacle

(System

control)

"Phono

jack

(Line

out)

Foot

(Rear)

(E08-0312-05)

(E63-0068-15)

(J02-0366-15)

This

service

manual

available

changing

information

from

serial

No.

31240001.

Refer

DP-MA5/MA9

service

manual

(B51-4588-00),

need

description

detail.

Ten

ayers

Pat

eae

eee

Peale

Paes

DP-M87

CONTENTS/ACCESSORIES

CONTENTS

ACCESSORIES

sssisieccecsseeelccdvscetsccdstcsisdeestariaseiasacnts

BOARD

(COMPONENT

SIDE

VIEW)

................

CIRCUIT

DESCRIPTION

SCHEMATIC

DIAGRAN

............::cccccccscssestscsetsserseees

TOSE

MOC

secs

civics

ook

satan

leceadeca

cake

gescagssoestiecect

EXPLODED

VIEW

Microprocessor

SC75217GF-642

(IC6)..........

MECHANISM

.............ccccccccssseecscensneesnseserteatenesses

Servo

CXA1782BQ

(1C1)

eee

ceeeeeeees

NDING

oss.ccse

sith

ptistsscctaceeabeetacsch

evi

sateen

tuscnasveaians

Digital

Signal

Processor

CXD25170Q

(IC2)

....9

PARTS.

LIST

ecazisesictsaeedseeslitasecsielivagevi

levecsetncavvei

toacens

ADJUSTMENT

..........:cceceeseeeseeenseeeseesseteesssesenesseseees

SPECIFICATIONS

............:ccccseceeteeseees

BACK

COVER

NOTE

Refer

DP-MA5/MA9

service

manual

(B51-4588-00),

need

description

detail.

ACCESSORIES

Magazine

packed

with

the

player.

Antenna

adaptor

(T90-0185-05)

75Q

300Q

T,E

type

only

Loop

antenna

stan

(J19-2815-04)

Magazine

(J19-3394-13)

foop

antenna

(T90-0174-05)

*FM

indoor

antenna

(T90-0175-05)

System

control

cords

(E30-2627-05)

(E30-2628-05)

plug

adaptor

(E03-0115-05)

type

only

Audio

cords

(E30-0505-05)

(E30-0615-05)

For

the

unit

with

European

plug

areas

other

than

Europe.

Battery

(AAA/RO3)

Remote

control

unit

(-)

(X94-1011-41

RC-77M)

K-77M

88M,

MIDI

M-57M

M-77M

Battery

cover

(A09-0126-03)

K-77M

88M,

MIDI

M-57M

M-77M

Battery

cover

(F07-0721-23)

K-99M,

MIDI

M-97M

For

M,X

type

System

name

Amp

Tuner

[Cassette

deck

K-T7M

AS?

116

X57

KcBaM

ATI

776

K-99M

A-87

T-76

X-87

DP-M87

GE-970

For

E,T

type

System

name

MIDI

M-57M

Cassette

deck

player

Graphic

equalizer

(option)

LS-56

MIDI

M-77M

LS-76

MIDI

M-97M

LS-97

CIRCUIT

DESCRIPTION

Test

Mode

Setting

the

test

mode

This

microprocessor

built

this

unit

(X32-)

can

put

TEST

MODE

just

short-circuiting

the

test

pins

(#2

and

#8).

(1)

Focusing

servo

(2)

Tracking

servo

(3)

Feed

servo

REPEAT

(1)

Laser

(In

STOP

mode

only)

(1)

Focusing

servo

RANDOM

(2)

Tracking

servo

(3)

Feed

servo

(1)

Focusing

servo

(2)

Tracking

servo

(3)

Feed

servo

(1)

Focusing

servo

(2)

Tracking

servo

(3)

Feed

servo

Load

No.1

disc

No.6

order.

Read

the

TOC

(table

contents)

disc

No.3

No.6

order.

TEST

mode

cancelled

after

reading

the

TOC

No.6

disc,

and

then

playback

the

1st

track.

DP-M87

DISC

Load

the

decided

No.

disc

which

pre-

ssed

the

key

and

set

STOP

mode.

ex.

Disc

No.4

key

pressed

(PLAY,

CHECK

and

CLEAR

keys

are

available

operate).

Turns

all

display

lamps

ON.

play

Turns

all

display

lamps

OFF.

"DISC"

and

are

not

off

because

circuit

static

operation.

(1)

Door

opens.

(2)

tray

come

out.

Press

"EDIT"

key,

"PLAY

MODE".

the

STOP

mode,

moves

the

pickup

slightly

toward

the

outer

position

disc.

the

STOP

mode,

moves

the

pickup

slightly

toward

the

inner

position

disc.

High-speed

playback

CHECK

mode

(in

stop

mode

only)

playback

disc

high-

speed

mode.

press

"SPACE"

key,

change

normal

mode.

this

mode,

all

keys

are

available.

REPEAT

SINGLE

{

DP-M87

CIRCUIT

DESCRIPTION

Microprocessor

S$C75217GF-642

(IC6)

2-1.

connection

diagram

xe)

2WQD2ldI3°

Zv9-ADLLZSLOS

(OAY3S)

DEZBLLVXD

(dSQ)

OLLSZGXD

OMS

3WOH

4,SSV

WSINVHO3W

S19

N3dO0

AVOTD

DP-M87

CIRCUIT

DESCRIPTION

2-2.

functions

$C75217GF-642

(IC6)

2-3.

functions

TC74HC165AP

(IC3)

Function

Reset

input

port

grid

control

port

Not

used

Shif

load

input

Clock

input

Magazine

switch

(SW4)

Memory

switch

(SW3)

Unload

switch

(SW5)

Load

switch

(SW5)

use

Ground

Data

output

use

Home

position

switch

(SW2)

Start

limit

switch

(SW1)

orbs

omit

——

|OPNSW

Tray

open

switch

(SW6)

use

FOK

Vec

Power

supply

(+5V)

MUTG

2-4.

TOC

data

output

serial

codes

for

file

When

the

player

reads

the

TOC

data

disc

(in

the

play

mode),

the

following

serial

codes

(16

bits)

are

DATA

output.

eae

MAX

TRACK

No.

[61XX]

MOd6l

C606

xciossiinciciePincasaeiiadaes

61H

FUNCTION

COE

0.0...

..eceecceceeeccsseeeeneaes

XXH

(Max

TNO)

TOTAL

TIME

(min.)

[62XX]

Model

code

ou...

sees

62H

SDATA

Serial

DATA

in/out

port

Function

code

.........0000

XXH

(Total

time

min.)

Serial

BUSY

in/out

port

TOTAL

TIME

(sec.)

[62XX]

Door

switch

input

port

mechanism

Model

code

uo...

63H

Control

port

unloading

motor

for

mechanism

FUNCTION

COdE

........e

cece

XXH

(Total

time

sec.)

Control

port

motor

for

mechanism

Control

port

down

motor

for

mechanism

Example

Control

port

solenoid

for

mechanism

When

disc

containing

tunes

minutes

and

seconds

total

played,

the

following

three

codes

{6120},

[6265]

and

[6302]

are

output

continuously.

driver

negative

power

supply

pre-driver

power

supply

grid

contro!

port

also

used

for

key-scan

+5V

power

supply

grid

contro!

port

also

used

for

key-scan

Signal

detection

port

for

SENSE

signal

from

signal

processor

and

servo

Q-data

read

clock

output

port

Q-data

input

port

GND

(Open)

Key

input

port

DP-M87

CIRCUIT

DESCRIPTION

Servo

CXA1782BQ

(IC1)

3-1.

Block

diagram

DATA

*INPUT

SHIFT

*ADRESS.

DECODER

TZ2C

COMP

OFCT

™1

sel

«WINDOW

COMP.

*FCS

PHASE

COMPENSATION

OFCT

DP-M87

CIRCUIT

DESCRIPTION

3-2.

function

name

Function

FEO

Focus

error

amplifier

output.

Connected

internally

FZC

comparator

input.

FEI

Focus

error

input.

FDFCT

Capacitor

connection

for

detect

time

constant.

Ground

this

through

capacitor

when

decreasing

the

focus

servo

high-frequency

gain.

External

time

constant

setting

for

increasing

the

focus

servo

low-frequency.

—

Focus

drive-output—

——

Focus

amplifier

negative

input

pin.

External

time

constant

setting

for

generating

focus

servo

waveform.

External

time

constant

setting

for

switching

tracking

high-frequeny

gain.

High

cut

off

frequency

setting

for

focus

and

tracking

phase

compensation

amplifier.

Tracking

amplifier

negative

input

pin.

Tracking

drive

output.

Feed

amplifier

non-inversed

input.

Feed

amplifier

negative

input

pin.

Feed

drive

output.

Setting

for

focus

search,

track

jump,

and

feed

kick

current.

Serial

data

transfer

clock

input

from

CPU

(no

pull

resistance).

Latch

input

from

CPU

(no

pull

resistance).

Reset

input;

resets

low

(no

pull

resistance).

Track

number

count

signal

output.

Outputs

FZC,

DFCT,

TZC

gain,

balance

and

others

according

the

command

from

CPU.

Focus

comparator

output

(DC

voltage

10kQ

load

resistance

connected).

Input

for

the

DEFECT

bottom

hold

output

capacitance-coupled.

summing

amplifier

output.

Eye

pattern

check

point.

summing

amplifier

inversed

input.

The

amplifier

gain

determined

the

resistance

connected

between

this

and

RFO

pin.

;

APC

amplifier

output.

PHD

APC

amplifier

input.

PHD1,

PHD2

I-V

amplifier

inversed

input.

Connect

these

pins

the

photo

diode

A+C

and

B+D

pins.

FE-BIAS

Bias

adjustment

focus

error

amplifier.

F,E

I-V

and

I-V

amplifier

inversed

input.

Connect

these

pins

photo

diodes

and

|-V

amplifier

gain

adjustment

(when

not

using

automatic

balance

adjustment).

VEE

TEO

Tracking

error

amplifier

output.

E-F

signal

output.

LPFI

Comparator

input

for

balance

adjustment

(input

from

TEO

through

L.P.F.).

TEI

Tracking

error

input.

ATSC

Window

comparator

input

for

ATSC

detection.

TZC

Tracking

zero-cross

comparator

input.

TDFCT

Capaitor

connection

for

defect

time

constant.

(Vcc+Vee)

voltage

output.

Digital

Signal

Processor

4-1.

Block

diagram

No.

4-2.

function

name

DP-M87

CIRCUIT

DESCRIPTION

CXD25170

(IC2)

Digital

cLV

Mop

MON

corrector

sack

saso

EXCK

s@so

SCOR

CPU

XLON

interface

SPOA~O

ined

pais

xLaT

DATA

SENS

cLKO

Servo

auto

XLTO

Asymmetry

sequencer

corrector

pare

ASYI

ASYO

ASYE

BIAS

Function

FOK

Focus

input.

Used

for

SENS

output

and

the

servo

auto

sequencer.

MON

Disc

motor

ON/OFF

control

output.

3,4

MDP,

MDS

Disc

motor

servo

clock.

LOCK

GFS

sampled

460Hz;

when

GFS

high,

this

outputs

high

signal.

GFS

low

eight

consecutive

samples,

this

outputs

low.

TEST

Test

(normally

GND).

FILO

Master

PLL

(slave=digita!

PLL)

filter

output.

FILI

Master

PLL

filter

input.

[

PCO

Master

PLL

charge

pump

output.

Vss

GND

__|

Avss

GND

(analog)

CLTV

Master

VCO

control

voltage

input.

AVbD

Analog

power

supply

(+5V).

EFM

signal

input.

BIAS

Constant

current

input

asymmetry

circuit.

CIRCUIT

DESCRIPTION

name

Function

ASYI

ASYO

ASYE

WDCK

LRCK

PCMD

BCK

GTOP

XUGF

XPCK

VpD

GFS

RFCK

C2PO

XROF

MNTS,

XTAI

XTAO

XTSL

Crystal

selection

input.

Set

low

when

the

crystal

16.9344MHz,

high

when

33.8688MHz.

FSTT

2/3

frequency

divider

output

for

pins

and

35.

C4M

4.2336MHz

output.

DOUT

Digital-out

output.

EMPH

Outputs

high

signal

when

the

playback

disc

has

emphasis,

low

signal

when

emphasis.

WEFCK

output.

EXCK

SBSO

read-out

clock

input.

MUTE

High

mute,

low

release

1,0

SENS

output

CPU.

XRST

System

reset.

Reset

when

low.

DATA

Serial

data

input

from

CPU.

XLAT

Latch

input

from

CPU.

Serial

data

latched

the

falling

edge.

CLOK

Serial

data

transfer

clock

input

from

CPU.

SEIN

Sense

input

from

SSP.

CNIN

Track

jump

count

signal

input.

DATO

;

Serial

data

output

SSP.

XLTO

;

Serial

data

latch

output

SSP.

Latched

the

falling

edge.

VoD

Power

supply

(+5V).

CLKO

‘

Serial

data

transfer

clock

output

SSP.

SPOA

SPOD

L-com

extended

interface

(input

D).

XLO

;

u-com

extended

interface

(output).

Asymmetry

comparator

volatge

input.

EFM

full-swing

output

(low=Vss,

high=Vpb).

Low

asymmetrycircuitoff,

high

asymmetry

circuit

on.

D/A

interface.

Word

clock

f=2Fs.

D/A

interface.

clock

f=Fs.

D/A

interface.

Serial

data

(two's

complement,

MSB

first).

D/A

interface.

Bit

clock.

GTOP

output.

XUGF

output.

XPLCK

output.

Power

supply

(+5V).

GFS

output.

RFCK

output.

C2PO

output.

XRAOF

output.

MNT

output.

16.9344MHz

crystal

oscillation

circuit

input,

33.8688MHz

input.

16.9344MHz

crystal

oscillation

circuit

output.

OLO/O}O}O;Oj;O}—]|O}—

—{|O}—-|/O/O/}O;O}O

—jO}|O

O/OJ/O;O}O

—/O

Notes

PCMD

two's

complement

output

MSB

first.

GTOP

used

monitor

the

frame

sync

protection

status.

XUGF

the

negative

pulse

for

the

frame

sync

derived

from

the

EFM

signal.

the

signal

before

sync

protection.

XPLCK

the

inverse

EFM

PLL

clock.

The PLL

designed

that

the

falling

edge

and

the

EFM

signal

transition

point

coincide.

GFS

goes

high

when

the

frame

sync

and

the

insertion

protection

timing

match.

RFCK

derived

from

the

crystal

accuracy.

This

signal

has

cycle

136u.

C2PO

represents

the

data

error

status.

XRAOF

generated

when

the

16K

RAM

exceeds

the

+4F

jitter

margin.

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