Sony CDP-970 User manual

US

Model

AEP

Model

UK

Model

SPECIFICATIONS

Compact

disc

player

Frequency

response

Signal

to

noise

ratio

Dynamic

range

Harmonic

distortion

Channel

sepration

Outputs

LINE

OUT

(FIXED)

(phono

jacks)

2

Hz

-20

kHz

+

0.3

dB

More

than

110

dB

More

than

97

dB

Less

than

0.003

%

More

than

100

dB

Output

level

2

V

(at

50

kiloohms)

Load

impedance

over

10

kiloohms

Remote

commander

RM-D570

Remote

control

system

Infrared

control

Power

requirements

3

V

DC

with

two

batteries

size

AA

(lEC

designation

R6)

67

x

20

«

175

mm

(w/h/d)

(2

3/4

<

13/16

x

7

inches)

Weight

135

g

(4.7

oz)

including

batteries

Supplied

accessories

Dimensions

LINE

OUT

Output

level

max.

2

V

(at

50

kiloohms)

Connecting

cord

(1)

(VARIABLE)

Load

impedance

over

10

kiloohms

(2

phono

plugs

<>

2

phono

plugs)

(phono

jacks)

Remote

commander

(1)

DIGITAL

OUT

Wave

length

660

nm

Size

AA

batteries

(2)

OPTICA

tput

level

-

18

dB

once

eer

a

TABLE

OF

CONTENTS

connector)

Title

Section

Page

HEADPHONES

Output

level

max.

28

mW

(stereo

phone

jack)

Load

impedance

32

ohms

SPECIFICATIONS:

scree

ccc

crest

rere

etter

eee

1

Protection

of

Eyes

from

Laser

Beam

During

-

General

Servicing

torres

eset

eres

eee

eats

2

Power

requirements

US

model:

120V

AC

50/60Hz

Safety

Check-out

s++++rssertr

str

rr

teres

eee

cree

2

AEP

model:

220V

AC

50/60Hz

SECTION

1.

GENERAL

UK

model:

240V

AC

50/60Hz

Location

of

Controls

ee

i

ee

a

ee

re

a

od

3

Power

consumption

13

W

SECTION

2.

ADJUSTMENTS

«scree

ce

ccc

rece

reer

teens

4

Approx.

SECTION

3.

DIAGRAMS

430

x

110

x

340

mm

3-1.

Semiconductor

Lead

Layouts-:++:+-++++++++*

7

(w/h/d)

3-2.

Circuit

Boards

Location

«*++++++srsstteeee

7

(17

X

43/5

X

133/5

3-3.

Printed

Wiring

Boards

--+-++s+++rte

sere

eee

9

inches)

3-4.

Schematic

Diagram

-c+e+cee

rece

ete

teeter

ees

13

Including

projecting

3-5.

IC

Block

Diagram

«+++

+

sect

rere

esse

eee

16

parts

and

controls

3-6.

Waveforms

-occ

etc

c

ett

e

cece

etter

eee

eecees

17

SECTION

4.

EXPLODED

VIEWS

verre

rss

sree

eee

es

18

SECTION

5..ELELCTRICAL

PART

LIST--+-+-+++-+++e>

COMPACT

DISC

PLAYER

SONY.

Weight

Approx.

5

kg

(11

Ibs

1

oz),

net

MICROFILM

i

E

5

CDP-970

SAFETY

CHECK-OUT

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

0.5

mA

(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

2

V

AC

range

are

suitable.

(See

Fig.

A)

To

Exposed

Metal

Parts

on Set

Ac

voltmeter

(0.75

V)

0.15uF

1,8kQ

+

Earth

Ground

Fig.

A.

Using

an

AC

voltmeter

to

check

AC

leakage.

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.

CAUTION

Use

of

controls

or

adjustments

or

performance

of

procedures

other

than

those

specified

herein

may

result

in

hazardous

radiation

exposure.

NOTES

ON

HANDLING

THE

OPTICAL

PICK-

UP

BLOCK

OR

BASE

UNIT

The

laser

diode

in

the

optical

pick-up

block

may

suffer

electrostatic

breakdown

because

of

the

poten-

tial

difference

generated

by

the

charged

electrostatic

load,

etc.

on

clothing

and

the

human

body.

During

repair,

pay

attention

to

electrostatic

break-

down

and

also

use

the

procedure

in

the

printed

matter

which

is

included

in

the

repair

parts.

The

flexible

board

is

easily

damaged

and

should

be

handled

with

care.

pewewcecwce

cer

eces

er

ecec

ore

ec er

ere

ec

eresere

reser

eremesoreroonoe

1.

Laser

Diode

Properties

@

Material:

GaAlAs

@

Wavelength:

780

nm

@

Emission

Duration:

continuous

®

Laser

Output:

max.

44.6

uW*

*

This

output

is

the

value

measured

at

a

distance

of

about

200

mm

from

the

objective

lens

surface

on

the

Optical

Pick-up

Block.

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

Cinclud-

ing

laser

diode),

replace

the

entire

Optiocal

Pick-

up

Block

(including

APC

borad).

VAROITUS:

Laite

sisaltaa,

laserdiodin,

joka

lahettaa

(nak

ymatonta)

silimille

vaarallista

lasersateilya.

ed

ee

oe

a

ee

wwe

ese

weet

e

ee

BESKYTTELSE

AF

QUNE

MOD

LASERSTRALING

UNDER

2

SERVICE

I

dette

apparat

anvendes

laserlys.

Derfor

skal

nedenstaende

instruktioner

neje

felges

under

service.

Folg

iovrigt

instruktionerne

i

servicemanualen.

ADVARSEL!!

Under

service

ma

@jnene

ikke

komme

nzer

objektiv-linsen

pa

den

optiske

pick-up

enhed.

|

tilfeelde

af

at

det

er

nedvendigt

at

kontrollere

udsendelsen

af

laserlys,

skal

det

ske

i

en

afstand

af

mere

end

25cm

fra

den

optiske

pick-up.

LASER

ADVARSEL

MAERKNING

Felgende

mzrkning

findes

indvendig

i

apparatet:

1.

Advarsel

Merkning

CAUTION

INVISIBLE

LASER

RADIATION

WHEN

OPEN

AND

INTERLOCKS

DEFEATED.

AVOID

EXPOSURE

TO

BEAM

ADVARSEL

©

usracic

LASEASTAALING

VED

ABNING

NAR

SIKKERMEDSAFBRYDERE

ER

UDE

AF

FUNKTION

UNDGA

VOSATIELSE

FOR

STRALING

1.

Laser-didoe

data

@

Materiale:

GaAlAs

@

Beigelaengde:

780

nm

*

Malt

i

1,6

mm

afstand

fra

overfladen

af

objektiv-

linsen

pa

den

optiske

pick-up

enhed.

@

Klassifikation:

Klasse

Hb.

2.

Adskil

aldrig

den

optiske

pick-up

enhed

under

service,

og

juster

ikke

APC

kredslebet

(Au

tomatic

Power

Control).

Hvis

APC

kredslebet

(incl.

laser-

dioden)

bryder

ned,

skal

hele

den

optiske

pick-up

enhed

(incl.

APC

printkortet)

udskiftes.

eer

ecece

rococo

cer

cere

rece

eser

eres

ee

ette

eg

FOOe

SAFETY-RELATED

COMPONENT

WARNNG!!

COMPONENTS

IDENTIFIED

BY

MARK

A\

OR

DOTTED

LINE

WITH

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

PUB-

LISHED

BY

SONY.

@

Udstraling:

Kontinuerlig

@

Laseroutput:

Max.0,4

mW*

SECTION

1

GENERAL

1-1.

LOCATION

AND

FUNCTION

OF

CONTROLS

Front

Panel

7)

(S)9\Mo}it)

12

24(23;(22)[21//20)[19)[18}

[17)(16)15}(14)(13)

POWER

switch

Disc

tray

TIME/MEMO

button

Remote

sensor

AUTO

SPACE

(auto

space)

button

Display

window

4

>>

(manual

search)

buttons

CHECK

(program

check)

button

PLAY

MODE

buttons

PROGRAM

button

SHUFFLE

button

CONTINUE/SINGLE

button

CUSTOM

INDEX

button

CLEAR

(program

clear)

button

Numeric

buttons

>

20

(over

20)

button

LINE

OUT/HEADPHONE

LEVEL

control

HEADPHONES

jack

EDIT/TIME

FADE

button

ERASE

(memory

erase)

button

FILE

(custom

file)

button

kK

>I

(AMS*)

buttons

FILE

RECALL

button

Bi

(stop)

button

FADER

(FADE

IN/FADE

OUT)

button

I!

(pause)

button

REPEAT

button

>

(play)

button

&

(open/close)

button

Timer

switch

MoONolasjoye

=I[S)

SRR

SRSSSBBRReRSS

"

AMS

is

the

abbreviation

of

Automatic

Music

Sensor.

Remote

Commander

RJ]

Iv

Bas

Palaes

4

(open/close)

button

FILE

RECALL

button

Numeric

buttons

ERASE

button

FILE

(custom

file)

button

Ké4

bP

AMS

buttons

4_.™

INDEX

buttons

<<>>

(manual

search)

buttons

<<>>

SLOW

(iow

speed

manual

search)

buttons

FADER

(FADE

IN/FADE

OUT)

button

LINE

OUT

VOLUME

(line

out/headphone

volume)

buttons

TIME

button

CLEAR

(program

clear)

button

A<>

B

repeat

button

CHECK

button

@

(stop)

button

II

(pause)

button

>

(play)

button

CLEAR/REPEAT

(A

<>

B

repeat

clear/repeat)

button

>

20

(over

20)

button

PLAY

MODE

buttons

PGM

(program

button

SHUFFLE

button

CONTINUE

button

SINGLE

button

C.INDEX

button

SW

ONEXONE)

—

[

Bataaeas

is)

SECTION

2

ADJUSTMENTS

ELECTRICAL

ADJUSTMENTS

1.

Perform

adjustments

in

the

order

given.

2.

Use

YEDS-18

(Part

No.

3-702-101-01)

disc

unless

otherwise

indicated.

3.

Use

the

oscilloscope

with

more

than

10MQ

im-

pedance.

RF

PLL

Frequency

Adjustment/Lock

Frequency

Check

Procedure:

frequency

counter

main

board

Co

TP

(PCK)

o_O

TP

(GND)

O——_,~O

.

Ground

test

point

TP

(ASY).

_

.

Connect

the

frequency

counter

to

the

test

points

TP

(PCK)

and

TP

(GND).

.

Turn

POWER

switch

on.

4.

Adjust

RV201

so

that

the

reading

on

the

fre-

quency

counter

is

4.3218MHz

+30kHz.

...

(RF

PLL

frequency

adjustment)

nN

w

.

Remove

the

grounding

wire

from

TP

(ASY).

.

Put

the

disc

(YEDS-1!8)

in

and

press

p>

button.

nan

wn

s

.

Confirm

that

the

reading

on

the

frequency

counter

is

locked

at

4.3218

MHz.

Adjustable

limits:

4,3218MHz

+30kHz

y

-

Focus

Bias

Adjustment

This

adjustment

should

he

made

after

replacing

the

Optical

Pick-up

Block.

Procedure:

oscilloscope

(OC

range)

main

board

C)

ates

TP

(RF)

O——————O+

TP

(RFG)

O

—_——_—_—=0

-

1.

Connect

oscilloscope

to

the

test

points

TP

(RF)

and

TP

(RFG).

.

Turn

POWER

switch

on.

Put

the

disc

(YEDS-18)

in

and

press

>

button.

.

Adjust

RV104

for

an

optimum

waveform

eye

pat-

tern.

Optimum

eye

pattern

means

that

shape

“©”

can

be

clearly

distinguished

at

the

center

of

the

waveform.

N

YY

THANE

[save

\YHRRNANY

tee

£\

E-F

Balance

Adjustment

This

adjustment

should

be

made

after

replacing

the

Optical

Pick-up

Block.

Procedure:

oscilloscope

(DC

range)

main

board

C)

TP

(TEO)

aT

As

TP

(GND)

=

.

Connect

the

oscilloscope

to

the

test

points

TP

(TEO)

and

TP

(GND).

Ground

TP

(ADJ

)

to

set

an

adjustment

mode.

Ground

TP(TES)

and

turn

POWER

switch

on.

Put

the

disc

(YEDS-18)

in

and

press

>

button.

_

wn

&

WY

Adjust

RV101

so

that

positive

and

negative

halves

of

traverse

waveform

have

the

same

amplitudes.

6.

After

adjustment,

cancel

the

adjustment

mode.

VOLT/DIV:

1V

TIME/DIV:

1ms

SECTION

2

ADJUSTMENTS

JSTMENTS

its

in

the

order

given.

t

No,

3-702-101-01)

disc

unless

1,

ype

with

more

than

10MQ

im-

djustment/Lock

Frequency

frequency

counter

|

TP

(ASY).

uency

counter

to

the

test

points

(GND).

tch

on.

©

that

the

reading

on

the

fre-

4.3218MHz

+30kHz.

ency

adjustment)

iding

wire

from

TP

(ASY).

S-18)

in

and

press

p

button.

reading

on

the

frequency

counter

8

MHz.

3218MHz

+30kHz

Focus

Bias

Adjustment

This

adjustment

should

he

made

after

replacing

the

Optical

Pick-up

Block.

Procedure:

oscilloscope

(OC

range)

main

board

C)

TP

(RF)

O————-O+

1P

(RFG)

o-

—_———lo-

1.

Connect

oscilloscope

to

the

test

points

TP

(RF)

and

TP

(RFG).

2.

Turn

POWER

switch

on.

3.

Put

the

disc

(YEDS-18)

in

and

press

>

button.

4.

Adjust

RV104

for

an

optimum

waveform

eye

pat-

tern.

Optimum

eye

pattern

means

that

shape

“©”

can

be

clearly

distinguished

at

the

center

of

the

waveform.

WERE

Wii

1.1-1.5

Vp-p

-0.1-0.05V

vent

should

be

made

after

replacing

Block.

oscilloscope

(DC

range)

e

IO

1.

Connect

the

oscilloscope

to

the

test

points

TP

(TEO)

and

TP

(GND).

2.

Ground

TP

(ADJ

)

to

set

an

adjustment

mode.

3.

Ground

TP(TES)

and

turn

POWER

switch

on.

4.

Put

the

disc

(YEDS-18)

in

and

press

>

button.

5

.

Adjust

RV101

so

that

positive

and

negative

halves

of

traverse

waveform

have

the

same

amplitudes.

6.

After

adjustment,

cancel

the

adjustment

mode.

VOLT/DIV:

1V

TIME/DIV:

1ms

Focus/Tracking

Gain

Adjustment

A

frequency

response

analyzer

is

necessary

in

order

to

perform

this

adjustment

exactly.

However,

this

gain

has

a

margine,

so

even

if

it is

slightly

off,

there

is

no

problem.

Therefore,

this

ad-

justment

is

not

recomended

generally

to

be

per-

formed.

Focus/tracking

gains

determine

the

pick-up

follow-

up

(vertical.

and

horizontal)

relative

to

mechanical

noise

and

mechanical

shock

when

the

2-axis

device

operate.

However,

as

these

reciprocate,

the

adjustment

is

at

the

point

where

both

are

satisfied.

@

When

gain

is

raised,

the

noise

when

the

2-axis

device

operates

increases.

@

When

gain

is

lowered,

it

is

more

susceptible

to

mechanical

shock

and

skipping

occurs

more

easily.

@

When

gain

adjustment

is

off,

the

symptoms

below

appear.

low

or

high

e

The

time

until

music

starts

becomes

longer

for

STOP

>

DPLAY

or

automatic

selection

(Ke4

PPI

buttons

pressed.

(Normally

takes

about

2

seconds.)

e

Music

does

not

start

and

disc

continues

to

rotate

for

STOP

>DPLAY

or

automatic

selection

(hed

bPt

buttons

pressed.)

@

Disc

table

opens

shortly

after

STOP>DPLAY.

e

Sound

is

interrupted

dur-

ing

PLAY.

Or

time

count-

er

display

stops

progress-

low

or

high

low

ing

@

More

poise

during

2-axis

high

device

operation.

The

following

is

a

simple

adjustment

method.

—

Simple

Adjustment

—

Note:

Since

exact

adjustment

cannot

be

performed,

remem-

ber

the

positions

of

the

controls

before

performing

the

adjustment.

If

the

positions

after

the

simple

adjust-

ment

are

only

a

little

different,

return

the

controls

to

the

origina!

position.

oscilloscope

(DC

range)

Procedure:

main

board

———

TP

(FEI)

SS

+

{

TP

(FEO)

1

=

TP

(TE!)

Que

-

TP

(TEO)

1.

Keep

the

set

flat.

If

the

set

is

not

horizontal,

this

adjustment

cannot

be

performed

due

to

the

gravity

against

the

2

axis

device.

2.

Insert

the

disc

(YEDS-18)

and

press

>

PLAY

button.

3.

Connect

the

oscilloscope

to

TP

(FEI)

and

TP

(FEO).

4.

Adjustment

RV103

so

that

the

waveform

is

as

shown

in

the

picture

below.

(focus

gain

adjust-

ment)

VOLT/DIV:

100mV

TIME/DIV:

2mS

—100mvV

—oOv

@

Incorrent

Examples

(DC

level

is

quite

different

from

the

adjusted

waveform)

(below)

low

focus

gain

TIME/DIV:

2mS

—OvV

high

focus

gain

VOLT/DIV:

100mvV

TIME/DIV:

2mS

—100mvVv

—75mvV

—oOv

VOLT/OIV:

100mV

5.

Connect

the

oscilloscope

to

TP

(TEI),

TP

(TEO).

6.

Adjust

RV102

so

that

the

waveform

is

as

shown

the

picture

below.

(tracking

gain

adjustment)

@

Incorrect

Examples

(fundamental

wave

appears)

low

tracking

gain

high

tracking

gain

(higher

frequency

of

the

fundamental

wave

than

above)

Adjustment

Location:

main

board

TP

(RFG)

|

vr,

(R

TP

(TEO)

TP

(ASY)

TP

(GND)

TP

(TEI)

ie

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(TES)

RV103

10202

TP

(FEO)

P

(FEI)

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Side

—

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in

even

if

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is

re,

this

ad-

to

be

per-

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follow-

mechanié¢al

axis

device

stment

is

at

|

the

2-axis

sceptible

to

nore

easily.

toms

below

Tracking

low

or

high

The

following

is

a

simple

adjustment

method.

—

Simple

Adjustment

—

Note:

Since

exact

adjustment

cannot

be

performed,

remem-

ber

the

positions

of

the

controls

before

performing

the

adjustment.

If

the

positions

after

the

simple

adjust-

ment

are

only

a

little

different,

return

the

controls

to

the

original

position.

oscilloscope

(DC

range)

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main

board

CT

,

TP

(FEI)

o-—7——0

+

TP

(FEO)

7

TP

(TEI)

Qww-

-4

TP

(TEQ)

1.

Keep

the

set

flat.

If

the

set

is

not

horizontal,

this

adjustment

cannot

be

performed

due

to

the

gravity

against

the

2

axis

device.

2.

Insert

the

disc

(YEDS-18)

and

press

>

PLAY

button.

3.

Connect

the

oscilloscope

to

TP

(FEI)

and

TP

(FEO).

4.

Adjustment

RV103

so

that

the

waveform

is

as

shown

in

the

picture

below.

(focus

gain

adjust-

ment)

TIME/DIV:

2mS

——100mV

—ov

@

Incorrent

Examples

(DC

level

is

quite

different

from

the

adjusted

waveform)

(below)

low

focus

gain

TIME/DIV:

2mS

——

250mV

—OoOv

high

focus

gain

VOLT/DIV:

100mv

TIME/OIV:

2mS

VOLT/DIV:

100mvVv

VOLT/DIV:

100mV

5.

Connect

the

oscilloscope

to

TP

(TEI),

TP

(TEO).

6.

Adjust

RV102

so

that

the

waveform

is

as

shown

in

the

picture

below.

(tracking

gain

adjustment)

VOLT/DIV:

100mV

TIME/DIV:

2mS

——-OvVv

@

Incorrect

Examples

(fundamental

wave

appears)

low

tracking

gain

VOLT/DIV:

100mV

TIME/DIV:

2mS

—oOov

high

tracking

gain

(higher

frequency

of

the

fundamental

wave

than

above}

VOLT/DIV:

100mV

TIME/DIV:

2mS

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Location:

main

board

TP

(RFG)

|

Wis

TP

(TEO)

@

TP

(GND)

med

TP

(TEI)

TP

(ASY)

RV101

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Sony CDP-970 User manual

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