Sony CDP-M72 User manual

CDP-M72

SERVICE

MANUAL

AEP

Model

Modei

Name

Using

Similar

Mechanism

CDP-M71

Mechanism

Type

CDM14-5BD1

BU-5BD1

TABLE

CONTENTS

SPECIFICATIONS

Section

Title

Page

Outputs

DIGITAL

OUT

Wave

length

660

(OPTICAL)

Output

level

dBm

GENERAL

pele

Location

Controls

.........:ccccssesscccessserensereteeessssansenee

General

Power

requirements

Model

for

Continental

Europe

220

230

AC,

50/60

ELECTRICAL

BLOCK

CHECKING

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

Mode

fot

the

United

Kingdom

Model

for

other

countries

110

120

V/220

240

50/60

Power

consumption

12W

DIAGRAMS

BIOCK

Diagram

...sssssssscscssssssssrsssssssceceeseceeeteee

“operon

ncludig

(w/a

(hax

vor

12/ches

3-2.

Semiconductor

Lead

Layouts

..........sseceeeee

iia

sae

eos

3-3.

Printed

Wiring

Boards

...........ssssesererereceseseees

mes

3-4.

Schematic

Diagram

........ccccseeseeecneeeeeees

pep

apesaeh

lor

some

areas,

3-5.

Block

Diagrams.

..........cscssessssesseseneesnees

Design

and

specifications

subject

change

without

notice.

3-6.

Functions

10401

0...

eecseeeeeeeenees

This

Compact

Disc

player

classified

CLASS

EXPLODED

VIEWS

CLASS

LASER

PRODUCT

LASER

product.

41,

Chassis:

Secton

-azsniissinintantioaieloatacan

Gee

VkAceeiPoe

The

CLASS

LASER

4-2.

Mechanism

Section

...........-:ssccesseseeseeeeees

located

extes

or.

4-3,

Optical

Pick-Up

BIOCK

..sssssssesssssssstseeseene

poe

PARTS

LIST

scscsowscsseeeccensetvsies

AYE

SONY.

CDP-M72

PROTECTION

EYES

FROM

LASER

BEAM

DURING

SERVICING

This

set

employs

laser.

Therefore,

sure

carefully

the

instructions

below

when

servicing.

CAUTION

Use

controls

adjustments

performance

procedures

other

than

those

specified

herein

may

result

hazardous

radiation

exposure.

NOTES

HANDLING

THE

OPTICAL

PICK-UP

BLOCK

BASE

UNIT

The

laser

diode

the

optical

pick-up

block

may

suffer

electrostatic

break-down

because

the

potential

difference

generated

the

charged

electrostatic

load,

etc.

clothing

and

the

human

body.

During

repair,

pay

attention

electrostatic

break-down

and

also

use

the

procedure

the

printed

matter

which

included

the

repair

parts.

The

flexible

board

easily

damaged

and

should

handled

with

care.

NOTES

LASER

DIODE

EMISSION

CHECK

The

laser

beam

this

model

concentrated

focused

the

disc

reflective

sureface

the

objective

lens

the

optical

pick-

block.

Therefore,

when

checking

the

laser

diode

emission,

observe

from

than

away

from

the

objective

lens.

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

MARK

DOTTED

LINE

WITH

MARK

THE

SCHEMATIC

DIAGRAMS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUBLISHED

SONY.

Laser

Diode

Properties

Material:

GaAlAs

Wavelength:

780nm

Emission

Duration:

continuous

Laser

Output:

max.44.6.W*

This

output

the

value

measured

distance

about

200mm

from

the

objective

lens

surface

the

Optical

Pick-up

Block.

During

service,

donot

take

the

Optical

Pick-up

Block

apart,

and

not

adjust

the

APC

circuit.

there

breakdown

the

APC

circuit

(including

laser

diode),

replace

the

entire

Optical

Pick-

Block

(including

APC

board).

LASER

DIODE

AND

FOCUS

SERCH

OPERATION

CHECK

Make

POWER

switch

with

disc

inserted

and

disc

table

closed.

Confirm

that

the

following

operation

performed

while

observ-

ing

the

objective

lens.

Confirm

that

laser

beam

spread.

and

down

motion

the

objective

lens.

times)

pstehiembeche

aninatouboeneo6-atthe

eae

CDP-M72

MODEL

IDENTIFICATION

SPECIFICATION

LABEL

CDP-M72

SONY.

MODEL

NO.

VLLLLLL

COMPACT

DISC

PLAYER

MMMM

MODEL

Acz4OV,

S060,

Saudi

Arabia

MODEL:

AC110-120,

220-240V,

50/60Hz,

12W

MADE

JAPAN

Japan

Made

Model

MADE

FRANCE

France

Made

Model

CDP-M72

LOCATION

CONTROLS

[1]

POWER

switch

[2]

Disc

tray

REPEAT

button:

[4]

SPACE

(auto

space)

button

[5]

OPEN/CLOSE

button

[6]

MUSIC

SCAN

button

PEAK

button

[8]

FADER

button

[9]

EDIT/TIME

FADE

button

CONTINUE

button

and

indicator

SHUFFLE

button

and

indicator

PROGRAM

button

and

indicator

SECTION

GENERAL

This

section

extracted

from

instruction

manual.

{23}

[22]

[21]

(20)

[r9}fsej17]

[46

[15]

Numeric

buttons

CLEAR

(program

clear)

button

(over

20)

button

CHECK

(program

check)

button

(manual

search)

buttons

TIME

SET

button

[19]

AMS")

buttons

[20]

(stop)

button

(pause)

button

(play)

button

[23]

TIME

button

Display

window

AMS

abbreviation

Automatic

Music

Sensor.

CDP-M72

SECTION

ELECTRICAL

BLOCK

CHECKING

Note

CDBlock

basically

constructed

operate

without

adjustment.

Therefore,

check

each

item

order

given.

Use

YEDS-18

disc

(3-702-101-01)

unless

otherwise

indicated.

Use

the

oscilloscope

with

than

10OMQ

impedance.

Clean

object

lens

applicator

with

neutral

detergent

when

the

signal

level

low

than

specified

value

with

the

following

checks.

Curve

Check

oscilloscope

board

a“

(FEQ)

(VC)

Procedure

Connect

oscilloscope

test

point

(FEO)

board.

Connect

between

test

point

(FES)

and

(VC)

lead

wire.

Turned

Power

switch

and

actuate

the

focus

serch.

(actuate

the

focus

serch

when

disc

table

moving

and

out.)

Check

the

oscilloscope

waveform

curve)

symmetrical

between

and

And

confirm

peak

level

within

341

Vp-p.

curve

waveform

symmetry

within

3£1Vp-p

After

check,

remove

the

lead

wire

connected

step

Note:

Try

measure

several

times

make

sure

that

the

ratio

than

10:

Take

sweep

time

long

possible

and

light

the

brightness

obtain

best

waveform.

Level

Check

oscilloscope

board

(RFQ)

(VC)

Procedure

Connect

oscilloscope

test

point

(RFO)

board.

Turn

Power

switch

on.

Put

disc

(YEDS-18)

and

playback.

Confirm

that

oscilloscope

waveform

clear

and

check

signal

level

correct

not.

Note

Clear

signal

waveform

means

that

the

shape

“

0”

can

clearly

distinguished

the

center

the

waveform.

VOLT/DIV

200mV

waveform

TIME/DIV

500nS

)

ANY

mee

WHINY

12222

veer

E-F

Balance

Check

oscilloscope

board

(TEO)

(VC)

Procedure

Connecttest

point

(ADJ)

ground

and

(TES)to

TP(VC)

with

lead

wire.

;

Connect

oscilloscope

test

point

(TEO)

board.

Turn

Power

switch

on.

Put

disc

(YEDS-18)

and

playback.

Confirm

that

the

oscilloscope

waveform

symmetrical

the

top

and

bottom

relation

OV,

and

check

this

level.

VPwh

Traverse

oscilloscope

symmetry

Level

2£1Vp-p

Remove

the

lead

wire

connected

step

CDP-M72

PLL

Free-run

Frequency

Check

Procedure

Connect

frequency

counter

test

point

(PLCK)

with

lead

wire.

frequency

counter

Main

board

Comnestemen)

(PLCK)

Turn

Power

switch

on.

Confirm

that

reading

frequency

counter

4.3218MHz.

Focus/Tracking

Gain

This

gain

has

margin,

even

slightly

off.

There

problem.

Therefore,

not

perform,

this

adjustment.

Please

note

that

should

fixed

mechanical

center

position

when

you

moved

and

not

know

original

position.

ADJUSTMENT

LOCATIONS

[

BOARD

]

Conductor

Side

[

MAIN

BOARD

]

Component

Side

Hae

RiaaMiienetin

dete

case

SECTION

DIAGRAMS

3-1.

BLOCK

DIAGRAM

101

301

xRST

(0)

FOCUS

/TRACKING/SLED

SERVO

DIGITAL

SIGNAL

PROCESSOR

EFM

COMPARATOR

aan

CLV

SERVO

SEIN

ome

eed,

Rae

G!)

@!)

KSS-240A

OPTICAL

PICK-UP

BLOCK

X301

16.9344MHz

Q393

BUFFER

—

Q392

SWITCH

FLD

DRIVE

MASTER

CONTROL

D-A,

8G-IG,P-E

TRACKING

COIL

ORIVE

LASER

TRACKING

DIQOE

coIL

RESET

SWITCH

;

Q206

S272

$271

Q204

LOAD

OUT

aOWER

—

SWITCH

tone

iss

1C102

SPINDLE

MOTOR

FOr

DRIVE

“

MOTOR

FLD40!

SPINDLE/SLED

DRIVE

DISPLAY

45V

MOTOR

DRIVE

$401

406,7

$408

410,

S412~

444

SLED

MOTOR

SPINDLE

MOTOR

$10!

MIOl

M102

LIMIT

FUNCTION

MI9I

SWITCH

MOTOR

Saudi

Arabia

MODEL

IC391

DIGITAL

OUTPUT

DIGITAL

OUT

OPTICAL

°o

VOLTAGE

CN39!

Q392

SWITCH

AEP/UK

MODEL

1C201

B30

(3)

-30v

REG

(1)

(4)

Q206

Q205

D203

206

RESET

SWITCH

/OFF

PS202

Q204

18202

see

POWER

pO~o;

SWITCH

REG

T901

POWER

TRANSFORMER

‘

((4)

$491

+5V

Q203

+5V

REG

Q207,208

O00

3-2.

SEMICONDUCTOR

LEAD

LAYOUTS

DTA144ES

DTC114ES

DTC144ES

2SC2458-YGR

DTC144EK

Sz:

2SA1175-HFE

2SA933S-OR

2SB1274-RS

2SB1274SA-Q

RD4.7M-B1

cathode

anode

RD6.8ES-B2

RD7.5JS-B2

RD9.1ES-B2

1SS120

11ES2

athode

anode

SEMICONDUCTOR

LOCATION

o——-:

indicated

lead

wire

mounted

the

component

side.

parts

mounted

the

conductor

side.

Through

hole.

Pattern

from

the

side

which

enables

seeing.

Pattern

the

rear

side.

Saudi

Arabia

Model

3-3.

PRINTED

WIRING

BOARDS

DIGITAL

ouT

{

MAIN

BOARD

)

(_ertca

CN:

(CHASS|

(CHAS

SIS)

(CHI

ASSIS)

POWER

TRANS

FORMER

VOLTAGE

SELECT]

szo1

230)

T901

NOT

REPLACEABLE

BUILT

a2(3

ii.

(Caen

OTtiOSSC‘éSCT

[

20r-

[

BOARD

}

[

BOARD

]

(

1-632-202

OPTICAL

PICK

—UP

BLOCK

KSS-

240A

M194

Load

OUT

P/UK

caine

jODEL

Peer

erate

TRANSFORMER

ree

20090000)

FLD

401

[

TRACK

STEP

INDEX

PEAK

MIN

DISC

SEC

bee

Powe

Hoan

88-88.

- 2

EDIT

TIME

SHUFFLE

PROGRAM

QMULT1)

FADE

AUTOSPACE

REPEAT

A-B

cai

‘a

{

DISPLAY

BOARD

]

Nay

BLK

$427]

S43)

(3)

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fs]

Reta

+192

~14-

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