Sony CDP-502ESII Bedienungsanleitung

ERVICE

MANUAL

Photo:

CDP-650ESDII

Refer

to

RM-D302/D502

Service

Manual

issued

separately

for

information

of

the

remote

controller

supplied

with

this

set.

CDP-620ESII/650ESDII:

US

Model

Canadian

Model

CDP-502ESII/552ESDI:

AEP

Model

UK

Model

E

Model

SPECIFICATIONS

System

Compact

disc

digital

audio

system

Outputs

Line

outputs

Disc

Compact

disc

FIXED

(phono

jacks)

Laser

Semiconductor

laser

(A

=

780

nm)

Output

level

2

V

rms

(at

MSB)

Laser

output

Max.

0.4

mW

*

Load

impedance

over

10

kilohms

*

This

output

is

the

value

measured

at

a

distance

of

about

1.6

mm

from

the

objective

lens

surface

on

the

Optical

Pick-up

Block.

200

r.p.m.

to

500

r.p.m.

(CLV)

1.2-

1.4

misec.

Sony

Super

Strategy

Cross

Interleave

Reed

Solomon

Code

Spindle

speed

Scan

velocity

Errorcorrection

Number

of

channels

2

D-A

conversion

16-bit

linear

Frequency

responce

2

-

20,000

Hz

+

0.5

dB

Harmonic

distortion

Less

than

0.0025%

(1

kHz)

Dynamic

range

More

than

96

dB

Channel

separation

More

than

95

dB

(1

KHz)

Wow

and

flutter

Below

measurable

limit

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

SHADING

AND

MARK

A\

ON

THE

SCHEMATIC

DIAGRAMS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

TO

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUBLISHED

BY

SONY.

|

MICROFILM

VARIABLE

(phone

jacks)

Max.

output

level

2

V

rms

(at

MSB)

Load

impedance

over

50

kilohms

Headphones

(stereo

phone

jack)

28

mW

at

32

ohms

CDP-552ESDII/650ESDII:

DIGITAL

OUT

(phono

jacks)

Max.

output

level

0.5

Vp-p

Load

impedance

75

ohms

—

Continued

on

page

2

—

ATTENTION

AU

COMPOSANT

AYANT

RAPPORT

A

LA

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

TRAME

ET

UNE

MARQUE

/\

SUR

LES

DIAGRAMMES

SCHE-

MATIQUES

ET

LA

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

LA

SECURITE

DE

FONCTIONNEMENT.

NE

REM-

PLACER

CES

COMPOSANTS

QUE PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

CE

MANUEL

OU

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

COMPACT

DISK

PLAYER

SONY.

AUD

CDP-502ESII/55

2ESDII/620ESII/650ESDII

Disc

Track

pitch

1.6

um

Sampling

frequency

44.1

kHz

Quantization

16

bit

linear

quantizing/channel

Modulation

system

EFM

Transfer

rate

2.03

Mbit/sec.

(before

modulation)

General

Power

requirements

US/Canadian

model:

120

V

AC,

60

Hz

AEP

model:

220

V

ac

(or

240

V

ac

adjustable

by

Sony

personnel),

50/60

Hz

UK

model:

240

V

ac

(or

220

V

ac

adjustable

by

Sony

personnel),

50

Hz

E

model:

110,

120,

220

or

240

V

adjustable,

50/60

Hz

Power

consumption

16W

CDP-502ESII/620ESII:

Approx.

430

x

85

x

335

mm

(w/h/d)

(17

x

33/,

x

131/,

inches)

including

projecting

parts

and

controls

CDP-552ESDII/650ESDO:

Approx.

430

x

85

x

365

mm

(w/h/d)

(17

x

34/5

x

143/,

inches)

including

projecting

parts

and

controls

Weight

CDP-502ESII/620ESI:

Approx.

8.5

kg

(18

Ibs,

12

02),

net

CDP-552ESDII/650ESDI:

Approx.

9.3

kg

(20

Ibs,

8

oz),

net

Dimensions

FEATURES

¢

High

performance

and

high

fidelity.

Direct

digital

signal

output

provides

for

the

highest

possible

sound

quality,

when

this

unit

is

connected

to

an

external

D/A

converter.

(CDP-552ESDII/650ESDII)

*

Feather-touch

function

buttons

for

direct

mode

change.

©

Linear

motor

for

quick

selection

search.

°

A

variety

of

playing

modes:

CONTINUE

mode,

PROGRAM

mode

and

SINGLE

mode.

¢

Index

function

for

quick

location

of

the

part

you

want.

¢

Repeat

function

for

one

selection,

the

whole

disc,

programmed

selections,

selections

with

random

order

or

a

particular

portion.

*

Auto

delay

function

allows

you

to

delay

the

playback

of

the

first

selection

2

seconds.

TABLE

OF

CONTENTS

Section

Title

Page

Specifications:

iio.

de

as

Ew

BE

1

B@atures

02.

¢

dish

Roads

Pee

nh

es

SS

2

Model

Identification

................4..

3

Safety

Check-Out

.......0...0.....0.04.

3

Protection

of

Eyes

from

Laser

Beam

During

Servicing...

2...

0.0...

eee

4

Servicing

Note

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

0.000002

eee

5

Caution

for

Electrostatic

Breakdown

........

6

Flow

Chart

of

BU-1C

(Base

Unit)

Troubleshooting...

............0000085

7

Function

of

Controls..............00004

9

Notes

on

Compact

Discs

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

11

SECTION

1

OUTLINE

1-1.

Circuit

Description

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

12

1-2.

Block

Diagram

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

15

SECTION

2

DISASSEMBLY

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

17

SECTION

3

ADJUSTMENTS

3-1.

Mechanical

Adjustment

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

2

3-2.

Electrical

Adjustments..............

2

SECTION

4

DIAGRAMS

4-1.

BU-1C

(Base

Unit)

Section

Mounting

Diagram

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

25

4-2.

CDP-502ESI/620EST

Mounting

Diagram

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

28

4-3.

CDP-502ESH/620ES0

Schematic

Diagram

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

3)

4-4.

CDP-552ESDII/650ESDI

Mounting

Diagram

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

38

4-5.

CDP-552ESDII/650ESDII

Schematic

Diagram

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

43

4-6.

Power

Supply

Section

Mounting

Diagram

and

Schematic

Diagram

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

4

SECTIONS

EXPLODED

VIEWS

AND

PARTS

LIST

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

33

SECTION

6

ELECTRICAL

PARTS

LIST....

6!

CDP-502ESII/55

2ESDII/620ESII/650ESDII

MODEL

IDENTIFICATION

—

Specification

Labels

—

CDP-502ESII/620ESI:

US,

Canadian

model:

CDP-620ESI

AEP,

UK,

E

model:

CDP-502ESII

SONY:

MODEL

NO,

KS

COMPACT

DISK

PLAYER

WLLL

SERIAL

NO.

MADE

IN

JAPAN

US,

Canadian

model:

AC:

120

V~

60

Hz

16W

AEP

model:

AC: 220

V

~

50/60

Hz

16

W

UK

model:

AC:

240

V

~

50/60

Hz

16

W

E

model:

AC:

110,

120,

220,

240

V

~

50/60

Hz

16

W

CDP-552ESDII/650ESDH:

US,

Canadian

model:

CDP-650ESDII

AEP,

UK,

E

model:

CDP-552ESDI

SONY:

MODEL

NO.

RSS

COMPACT

DISK

PLAYER

WLLL

LLL

SERIAL

NO.

MADE

IN

JAPAN

US,

Canadian

model:

AC:

120

V

~60Hz

16W

AEP

model:

AC:

220

V

~

50/60

Hz

16

W

UK

model:

AC:

240

V

~

50/60

Hz

16

W

E

model:

AC:

110,

120,

220,

240

V

~

50/60

Hz

16

W

SAFETY

CHECK-OUT

(US

Model)

After

correcting

the

original

service

problem,

perform

the

following

safety

check

before

releasing

the

set

to

the

customer:

Check

the

antenna

terminals,

metal

trim,

‘‘metallized”’

knobs,

screws,

and

all

other

exposed

metal

parts

for

AC

leakage.

Check

leakage

as

described

below.

LEAKAGE

TEST

The

AC

leakage

from

any

exposed

metal

part

to

earth

ground

and

from

all

exposed

metal

parts

to

any

exposed

metal

part

having

a

return

to

chassis,

must

not

exceed

0.5mA

(500

microampers).

Leakage

current

can

be

measured

by

any

one

of

three

methods.

1.

A

commercial

leakage

tester,

such

as

the

Simpson

229

or

RCA

WT-540A.

Follow

the

manufacturers’

instructions

to

use

these

instru-

ments.

2.

<A

battery-operated

AC

milliammeter.

The

Data

Precision

245

digital

multimeter

is

suitable

for

this

job.

3.

Measuring

the

voltage

drop

across

a

resistor

by

means

of

a

VOM

or

battery-operated

AC

volt-

meter.

The

“limit”

indication

is

0.75

V,

so

analog

meters

must

have

an

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

of

a

passive

VOM

that

is

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

a

2V

AC

range

are

suitable.

(See

Fig.

A)

To

Exposed

Metal

Parts

on

Set

AC

0.15

uF

S1.5k9

voltmeter

{0.75

V)

=

Earth

Ground

Fig.

A.

Using

an

AC

voltmeter

to

check

AC

leakage.

CDP-502ES/I/55

2ESDII/620ESII/650ESDII

PROTECTION

OF

EYES

FROM

LASER

BEAM

DURING

SERVICING

This

set

employs

a

laser.

Therefore,

be

sure

to

fol-

low

carefully

the

instructions

below

when

servicing.

WARNING

!!

WHEN

SERVICING,

DO

NOT

APPROACH

THE

LASER

EXIT

WITH

THE

EYE

TOO

CLOSELY.

!N

CASE

IT

IS

NECESSARY

TO

CONFIRM

LASER

BEAM

EMISSION,

BE

SURE

TO

OBSERVE

FROM

A

DISTANCE

OF

MORE

THAN

25

cm

FROM

THE

SURFACE

OF

THE

OBJECTIVE

LENS

ON

THE

OPTICAL

PICK-UP

BLOCK.

CAUTION:

The

use

of

optical

instrument

with

this

product

will

increase

eye

hazard.

CAUTION

Use

of

controls

or

adjustments

or

performance

of

procedures

other

than

those

specified

herein

may

result

in

hazardous

radiation

exposure.

SSS

SHORES

S

HB

e

Te

Here

re

resese

rere

1.

Laser

Diode

Properties

Material:

GaAlAs

Wavelength:

780

nm

Emission

Duration:

continuous

Laser

Output:

max.

0.4

mW*

e

*

This

output

is

the

value

measured

at

a

distance

of

about

1.6mm

from

the

objective

lens

surface

on

the

Optical

Pick-up

Block.

@

Classification:

Class

Mb

2.

During

service,

do

not

take

the

Optical

Pick-up

Block

apart,

and

do

not

adjust

the

APC

circuit.

If

there

is

a

breakdown

in

the

APC

circuit

(includ-

ing

laser

diode),

replace

the

entire

Optiocal

Pick-

up

Block

(including

APC

borad).

Oe

BESKYTTELSE

AF

@JNE

MOD

LASERSTRALING

UNDER

SERVICE

I

dette

apparat

anvendes

laserlys.

Derfor

skal

nedenstaende

instruktioner

naje

folges

under

service.

Folg

iovrigt

instruktionerne

i

servicemanualen.

ADVARSEL!!

Under

service

ma

gjnene

ikke

komme

nzr

objektiv-linsen

pa

den

optiske

pick-up

enhed.

|

tilfzelde

af

at

det

er

ngdvendigt

at

kontrollere

udsendelsen

af

laserlys,

skal

det

ske

i

en

afstand

af

mere

end

25cm

fra

den

optiske

pick-up.

LASER

ADVARSEL

MARKNING

Folgende

mzrkning

findes

indvendig

i

apparatet:

1.

Advarsel

Mzerkning

CAUTION

AND

INTERLOCKS

OEFEATED

ADVARSEL

:

INVISIBLE

LASER

RADIATION

WHEN

OPEN

AVOID

EXPOSURE

TO

BEAM.

USYNLIG

LASERSTRALING

VEO

ABNING

NAR

SIKKERHEDSAFBAYOERE

ER

UDE

AF

FUNKTION

UNOGA

UDSATTELSE

FOR

STRALING.

te

7

1.

Laser-didoe

data

@

Materiale:

GaAlAs

@

Belgelengde:

780

nm

@

Udstraling:

Kontinuerlig

@

Laseroutput:

Max.

0,4

mW*

*

Malt

i

1,6

mm

afstand

fra

overfladen

af

objektiv-

linsen

pa

den

optiske

pick-up

enhed.

@

Klassifikation:

Klasse

Mb.

2.

Adskil

aldrig

den

optiske

pick-up

enhed

under

service,

og

juster

ikke

APC

kredslebet

(Automatic

Power

Control).

Hvis

APC

kredslebet

(incl.

laser-

dioden)

bryder

ned,

skal

hele

den

optiske

pick-up

enhed

(incl.

APC

printkortet)

udskiftes.

RR

me

eee

meee

eee

et

eee

VAROITUS:

Laite

sisaltaa,

laserdiodin,

joka

lahettia

(nakymatonta)

silmille

vaarallista

lasersateilya.

CDP-502ESII/55

2ES

DII/620ESII/650ESDII

—

SERVICING

NOTE

—

A

transit

lever

is

provided

at

the

bottom

of

the

unit

to

protect

the

NOTES

ON

LASER

DIODE

EMISSION

CHECK

The

laser

beam

on

this

model

is

concentrated

so

as

to

be

focused

on

the

disc

reflective

surface

by

the

objective

lens

in

the

optical

pick-up

block.

There-

fore,

when

checking

the

laser

diode

emission,

observe

more

than

25

cm

away

from

the

objective

lens.

LASER

DIODE

AND

FOCUS

SERCH

OPERA-

TION

CHECK

1.

Make

POWER

switch

on

with

no

disc

inserted

and

disc

table

closed.

2.

Confirm

that

the

following

operation

at

right

is

performed

while

observing

the

objective

lens.

@

Hold

down

optical

pick-up

block

and

chucking

arm

by

a

finger.

==

Es

chucking

arm

optical

pick-up

~

—

Se

>

—

C2)

Confirm

that

laser

beam

is

spread.

(3)

Up

and

down

motion

of

the

objective

lens.

(3

times)

optical

system

against

shock

during

transportation.

Before

starting

repairing,

make

following

procedures.

Screwdriver

Bottom

Slot

=

Screw

(red)

Transit

lever

1.

Loosen

the

screw

(red)

with

the

screwdriver.

2

__=Insert

the

screwdriver

into

the

slot

in

the

lever

and

move

it

in

the

direction

of

the

arrow

until

it

stops.

3

Tighten

the

screw.

NOTES

ON

IC

REPLACEMENT

@

When

replacing

IC401,

501,

first

clean

the

IC

head

and

the

inside

of

the

heat

sink

with

alcohol,

then

mount

the

heat

sink

and

fill

the

heat

sink

indented

portion

with

an

epoxy

type

adhesive*,

as

shown

in

the

illustration

below.

*

Epoxy

type

adhesive:

Sony

bond

SC1000

or

other

quick

drying

2

liquid

compound.

epoxy

adhesive

——

1C

:

l

protruding

|

section

i

>

Is

|

pas

heat

sink

CDP-502ESII/55

2ESDII/620ESII/650ESDII

—

CAUTION

FOR

ELECTROSTATIC

BREAKDOWN

—

NOTES

ON

HANDLING

THE

BASE

UNIT

(BU-1C)

The

laser

diode

in

the

optical

pick-up

block

may

1.

Place

a

conductive

sheet

on

the

workbench.

suffer

electrostatic

breakdown

because

of

the

poten-

(The

black

sheet

used

as

repair

parts

wrapping).

tial

difference

generated

by

the

charged

electrostatic

2.

Place

the

set

on

the

conductive

sheet.

so

that

the

load,

etc.

on

clothing

and

the

human

body.

The

printed

matter

below

is

included

in

the

repair

parts.

During

repair,

use

the

procedure

in

the

printed

chassis

touches

the

sheet.

(This

makes

it

the

same

potential

as

the

conductive

sheet).

3.

Place

your

hands

on

the

conductive

sheet.

(This

matter.

The

following

method

is

an

example

for

reference

makes

them

the

same

potential

as

the

sheet).

purposes:

4.

Remove

the

optical

pick-up

block.

5.

Perfrom

work

on

top

of

the

conductive

sheet.

Be

careful

that

clothing

does

not

touch

the

optical

pick-up

block.

Printed

Matter

Included

in

the

Repair

Parts

When

opening

or

repairing

a

BU-1C,

the

procedure

for

grounding

as

follows

is

required

to

prevent

damage

caused

by

static

electricity.

1.

Grounding

for

the

human

body.

Be

sure

to

put

on

a

wrist-strap

for

grounding

(with

impedance

lower

than

10°Q2)

whose

other

end

is

grounded

The

strap

works

to

drain

away

the

static

electricity

built-up

on

the

human

body.

2.

Grounding

for

the

work

table.

Be

sure

to

lay

on

the

table

a

cunductive

sheet

(with

impedance

lower

than

10°92)

such

as

sheet

of

copper

which

is

grounded.

3.

As

static

electricity

built-up

on

clothes

is

not

drained

away,

be

careful

not

to

let

your

clothes

touch

the

BU-IC.

Wrist-strap

for

grounding

transit

protective

cap

The

unit

BU-1C.

@)

Conductive

sheet

CDP-502ESII/55

2ESDII/620ESII/650ESDII

CDP-502ESII/55

2ESDII/620ESII/650ESDII

FLOW

CHART

OF

BU-1C

(BASE

UNIT)

TROUBLESHOOTING

®

Confirm

all

connectors

around

BU-1C

(base

unit)

are

secured

before

the

following

check.

[SERVO

BOARD]

POWER

ON

IS

OPTICAL

o

PICK-UP

SET

AT

SLED

MOTOR

DRIVE

CIRCUIT

INNERMOST

IS

—1.4

VOLTAGE

OUTPUT

AT

THE

EMITTERS

‘

CIRCUMFER-

OF

Q205

AND.Q206?

ENCE?

DO

NOT

OBSERVE

LASER

BEAM

|

NEAR

THE

OBJECTIVE

LENS.

CHECK

opera.

BE

SURE

TO

OBSERVE

MORE

Dee

miee

eco:

THAN

25

CM

AWAY

ee

DOES

LASER

|

De

AGe

EGR

NO

ARE

+B

(+5

V)

AND

—B

(—5

V)

VOLTAGES

|

SEE

ae

TION

APPLIED

TO

BU-1C

(BASE

UNIT)?

1

CHECK.

|

YES

@fis

THE

VOLTAGE

NO

|

OF

IC303

(ss

PJ

Pee

TERMINAL

@5)

+5

v?

)

4)

YES

FOCUS

COIL

DRIVE

CIRCUIT

|

DOES

FOC

@SEARCH

EpeRRTER

c

NG

1S

VOLTAGE

OUTPUT

APPLIED

TO

EMITTERS

|

NO

|

“SEE

PAGE

5

FOR

OF

Q201

AND

202?

+1

—--—---->.-

etal

Ske

gel

(THREE

CYCLE

search’

\—7\

7

\

OPERATION

IS

SHOWN.)

|

YES

|

©

|

-

|

<D0ES

DISC

MOTOR

NO

CHECK

FOK

SIGNAL.

2

|

<ROTATE?

IS

THE

VOLTAGE

OF

THE

BASE

OF

Q303

4.8

v?

|

Gee VES

1§

THE

VOLTAGE

|

OF

1C306

TERMINAL

—->+|

READ

TOC

INFORMATION

CHECK

OPERA.

TION

WITH

DISC

INSERTED.

CONFIRM

THAT

NO

<

Toc

IS

READ.

are

PAGE

8.

=

DETECTION

CIRCUIT

OPERATION

CHECK.

CONFIRM

THAT

THE

WAVEFORM

BELOW

IS

OBSERVED.

SEE

PAGE

12

FOR

CONFIRMING

PROCEDURE.

eae

=F

SCRATCH

WIDTH

YES

BU-1C

OPERATION

CHECK

IS

OVER.

@

-0.7

v?

YES

CHECK

RF

SIGNAL.

CONFIRM

THAT

THE

WAVEFORM

BELOW

IS

OBSERVED.

RF

SIGNAL

WAVEFORM.

(ay

|

ARR

|

OOO

OOK

A

4.4,9.0.0.0.0000.004,

1Vp-p

HERR

|

0.3V

|

1

I

THE

DIAMOND

SHAPE

(0)

IN

THE

CENTER

OF

THE

WAVEFORM

SHOULD

BE

CLEARLY

DISTINGUISHED.

NO

REPLAC

CHECK

BU-1C.

THE

SET.

6

(SPL)

BU-1C

(BASE

UNIT)

5

2

8]

4

3

(FOK)

(—5V)

(+5V)

(SD)

(FD)

(LD

ON)

CHECKING

TOC

INFORMATION

READING

If

TOC

information

is

read

correctly,

the

number

of

selections

on

the

disc

and

the

total

playing

time

will

be

displayed.

The

display

will

be

as

follows

for

YEDS-1.

i

fa

Ie

1

Ll

i

|

eee

ieee

SECOND

TRACK

MINUTE

%

the

number

of

selections

\

total

playing

time

CDP-502ESII/55

2ESDII/620ESII/650ESDII

CDP-502ESII/55

2ES

DII/620ESII/650ESDII

FUNCTION

OF

CONTROLS

eon

DIGITAL

[1)

[12]

mains

CDP-552ESDII/650ESDI:

LINE

OUT

CDP-502ESI/620ESII:

[13]

(14) (15)

(16)

17]

(18)

(49)

(20)

(2a)

[pista

_ouT

|

ah

©,

i

Front

panel

1

2

|

=

~—

co

o

Ess

=

o

[11]

pry

=

Lad

=

w

=

[15]

=

-i]

=]

=

co

=

wo

POWER

switch

Disc

compartment

Place

a

compact

disc

here.

OPEN/CLOSE

button

Display

window

Direct

selection

buttons

Select

the

desired

selection

directly

by

number.

ii

PAUSE

button

and

indicator

Press

to

pause

during

play.

To

release

the

pause

mode,

press

it

again.

p&

PLAY

button

and

indicator

AMS

(Automatic Music

Sensor)

buttons

Press

to

search

for

the

desired

selection.

INDEX

buttons

Press

to

search

for

a

particular

index

number

to

begin

playback

at

that

point.

Manual

search

buttons

Press

to

search

for

the

desired

portion

of

the

selection.

TIMER

switch

Slide

to

play

back

when

using

the

timer

available

optionally.

HEADPHONES

jack

(stereo

phone

jack)

Remote

sensor

and

indicator

(for

remote

control)

Picks

up

the

infrared

transmitting

signal

from

the

supplied

remote

commander.

REPEAT

programming

buttons

Press

to

repeat

play.

There

are

five

types

of

repeat

play:

one

selection,

all

selections,

A

<>

B,

program

and

shuffle

repeat.

TIME

(elapsed

or

remaining

time)

button

Shows

the

elapsed

time,

the

remaining

time

on

both

the

selection

being

played

and

the

whole

disc.

AUTO

DELAY

button

Inserts

two

seconds

of

blank

space

before

the

beginning

of

each

selection.

SHUFFLE

PLAY

button

Press

to

play

selections

in

a

random

order.

CLEAR

button

Press

to

clear

the

programmed

selections.

CHECK

button

Press

to

check

the

order

of

the

programmed

selections.

nN

o

w

STOP

button

[21]

PLAY

MODE

buttons

PROGRAM

button:

Press

to

play

the

programmed

selections.

SINGLE

button:

Press

to

play

one

selection.

CONTINUE

buttuon:

Press

to

play

from

the

first

(or

desired)

selection

to

the

last

selection.

NR

[22]

LINE

OUT/

()

PHONE

LEVEL

(headphone

level)

control

Adjusts

the

output

levels

for

LINE

OUT

jacks

on

the

rear

panel

or

the

HEADPHONES

jack

on

the

front

panel.

Display

window

3}

DISC

indicator

Lights

up

when

the

disc

compartment

is

closed

with

a

disc

in

place

or

when

the

disc

compartment

is

opened.

iad

DX)

>

TRACK

indicator

Shows

the

track

number

of

the

selection

being

played.

[25]

PGM

(program)

indicator

Lights

up

while

programming

is

being

done

and

while

checking

the

programmed

order.

nN

6)

INDEX

indicator

Displays

the

index

number

of

the

selection

being

played.

RO

~

Music

calender

display

window

Displays

disc

selection

numbers

up

to

20

selections.

i)

8]

Time

counter

Shows

the

elapsed

time

the

selection

has

been

played.

nN

o

REPEAT

indicator

Lights

up

during

repeat

play.

w

0)

AUTO

DELAY

indicator

Lights

up

when

the

AUTO

DELAY

button

is

pressed.

[=]

[31]

SHUFFLE

PLAY

indicator

Lights

up

when

the

SHUFFLE

PLAY

button

is

pressed.

3]

OVER

indicator

Lights

up

when

a

disc

with

more

than

20

selections

is

inserted.

CDP-502ESII/55

2ESDII/620ESII/650ESDII

The

illustration

on

page 3

shows

the

model

available

in

European

countries.

33]

LINE

OUT

jacks

FIXED:

Output

level

is

constant.

VARIABLE:

Output

level

can

be

changed

with

the

LINE

OUT

contro!

and

supplied

remote

commander.

34)

DIGITAL

OUT

jack

Directly

outputs

the

digital

audio

and

subcode

data

read

from

the

disc.

Connect

to

the

DIGITAL

IN

jack

of

an

optional

DAS-702ES

D/A

converter

unit.

35|

DIGITAL

OUT

switch

Slide

to

select

the

output

signal

from

the

DIGITAL

OUT

jack.

ON:

for

audio

and

subcode

data

output

ON

(FOR

AUDIO

USE):

for

audio

data

output

only.

Set

to

this

position

when

listening

to

music

through

a

connected

D/A

converter

unit.

OFF:

for

no

digital

data

output.

Set

to

this

position

when

listening

to

music

through

the

LINE

OUT

jacks.

AC

power

cord

SUBCODE

OUT

connector

This

connector

is

provided

to

extend

the

utility

of

this

compact

disc

player

by

allowing

for

the

connection

of

optional

equipment

which

will

be

available

in

the

future.

NOTES

ON

COMPACT

DISCS

Handle

the

disc

by

its

edge,

and

to

keep

the

disc

clean,

do

not

touch

the

rainbow

colored

surface.

Not

this

way

Do

not

expose

the

disc

to

direct

sunlight

or

heat

sources

such

as

hot

air

ducts,

or

leave

it

in

a

car

parked

in

direct

sunlight

where

there

can

be

a

considerable

rise

in

the

temperature.

Before

playing,

clean

the

disc

with

the

cleaning

cloth.

Wipe

the

disc

from

the

center

out.

Do

not

use

solvents

such

as

benzine,

thinner,

commercially

available

cleaners

or

anti-static

spray

intended

for

analog

discs.

After

playing,

store

the

disc

in

its

case.

CDP-5072ESII/55

2ESDII/620ESII/650ESDII

SECTION

1

OUTLINE

1-1.

CIRCUIT

DESCRIPTION

The

circuits

on

this

set

are

almost

the

same

as

those

on

CDP-502ES/620ES

and

CDP-552ESD/

650ESD,

which

is

already

on

the

market.

Therefore,

only

the

dropout

detection

circuit

and

mechanism

control

IC

(IC303),

which

change

base

unit

BU-1

to

BU-IC,

will

be

explained

here.

Refer

to

the

circuit

descriptions

in

the

CDP-502ES/620ES

and

CDP-

552ESD/650ESD

Service

Manual

for

other

portions.

1.

Dropout

Detection

Circuit

This

circuit

is

on

the

base

unit

BU-1C

RF

board.

If

there

are

any

bubbles

or

scratches

made

on

the

disc

when

it

is

produced,

these

will

adversely

affect

tracking,

or

focus

servo,

when

the

disc

is

played,

This

will

cause

mechanical

noise

to

be

generated

from

the

pick-up,

sound

skipping,

or

electrical

noise.

This

cir-

cuit

detects

these

bubbles

and

scratches,

and

the

out-

put

then

lowers

tracking

gain

or

focus

gain

loop

gain

to

prevent

these

problems.

{RF

BOARD)

‘“'-

operation

will

be

explained.

Please

look

at

Fig.

1.

During

PLAY,

the

RF

signal

output

from

IC101

G)

is

applied

to

D101

via

IC102-1

buffer.

This

RF

signal

is

envelope

wave

detected

at

D101.

Therefore,

during

normal

operation

(no

bubbles

or

scratches

on

the

disc)

D101

cathode

side

has

a

DC

component.

Bias

is

applied

via

D103

and

R115

so

that

IC102-2

comparator

output

is

low

at

this

time.

D102,

R114

and

C113

perform

the

role

of

adjusting

auto

bias

relative

to

RF

signal

level

fluctuation

and

also

act

as

a

smoothing

circuit

so

that

IC102-2

bias

dose

not

change

even

if

there

is

dropout.

Then,

if

there

are

bubbles

or

scratches,

the

RF

signal

is

cut,

and

IC102-2

(2)

voltage

goes

lower

than

that

of

IC102-2

@)

via

C111,

and

during

this

period,

comparator

output

IC102-2

q@)

is

in-

verted

and

becomes

high.

This

signal

switches

IC203

switch,

and

tracking

gain

and

focus

gain

loop

gain

are

lowered.

IMAIN

BOARD)

10101

CX20109

1€102-1

BUFFER

TP102

wD

8103

10%

\——

Dropout

Detection

Circuit

+5

1€102-2

COMPARATOR

10201

CX20108

ero

HD14053BFP

GAIN

DOWN

SWITCH

Connect

to

@

side

at

‘’L’’.

Connect

to

O

side

at

‘’H”’.

Fig.

1

Dropout

Detection

Circuit

and

Gain

Down

Switch

Circuit

@

Ic102

@

(RF

signal)

@

Ic102

(2)

@

Ic102

@G)

©

D209

cathode

orn

afeerioh)

circuit

output

dropout

width

scratch

(scratch

width)

Fig.

2

Waveform

when

Dropout

is

Detected

(Measured

on

YEDS-1

disc

with

tape

of

about

1

mm

width

stuck

on

as

in

Fig.

3)

Sony CDP-502ESII Bedienungsanleitung

Beliebte CD-Player Handbücher anderer Marken