Sony CDP-68 User manual

SERIJICE

MANUAL US Model

US Model

CDP.NTESD

US Model

Canadian

Model

AEP Model

UK Model

E Model

cDP-750

PHOTO:CDP-75O

coP-68

@mplctdlsc plet€r

System Compact

disc

player

Laser Semiconductor

laser

(À=780

nm)

Laser

output Max.0.4

+This

outputis

thevalue

measured

adistance

ofabout1.6

from

theobjective

lens

surface

ontheOptical

Pick-up

Btock.

Frequencyresponse 2Hz- ?okH,z(r0.5dS)

Signaltonoise

ratio More

than102

Oynamicrange More

than

95dB

Harmonlcdistortion Lessthan

0.003%

(at

kHz)

Channel

separalion Morethan

95dB

Wow

and

flutter Belowmeasurable

limit

(t0.001%

WPEAK)

SPECIFICATIONS

Gcnoral

Power requirements

US, CanadianModel . . .

AEP Model.

UK Model.

E Model.

Power consumption

Dimensions

Weight

120V

AC,60Hz

22OV

AC,5O/60H2

240v Ac,50/60H2

110-120,220-2QV AC,

5O/@Hz

12W

Approx.430x 100

x 340mm

(w/h/dl

(17x4x13%inchesl

including

proiecting

parts

andcontrols

Approx.4.7kg

(10

lbs

6ozl,net

Remote

cornman

br (supplled)RM

-D4SO

Remote

control

system

Infrared

control

Power

requirements

3VDC

with

twoR6

batteries

(size

AA)

Dimensions 62x2!x 168.5

(w/h/d)

(2\zxnlrx63la

inches)

Weighl 130

g(5

including

batteries

Supplled

accessorles

COMPACT

DISG

PLAYER

Outpntt

Type Outputler/sl Loadimpedance

LINE

OUT Phono

jack 2V

(50

kilohms) more

than

kilohms

HEADPHON.

ES Stereo

jack 6.6mW

(32

ohms)

DIGITALOUT

lcDP-207ESD/

750:AEP,UK

modelsonlyl

Phono

jack 0.5Vp-p

ohms) 75

ohms @nnectingcord

phono

plugs

- 2phonoplugs) 1

Flemote

commander 1

batteries 2

SONY

cDP_68

/2O7ESD/75,O

FEATURES

. PROGRAM

play

for

playing

uptoæ sêlections

inadesired

order

. SHUFFLE

play

tor

playing

theselections

inarandom

order

. REPEAT

function

forasingleselection,

the

wholedisc,

PROGRAM

play,

SHUFFLE

play.

foraparticular

portion

ofaselection.

. Easy-toread

display

window

showsthe

track

numberbeing

played,

elapsed

playing

time,and

theremaining

time,and

indicates

the

repeat

play,

shuffle

play,

autospace

functions.

rAutospace

function

torcreating

ablankspace

of3

seconds

between

each

selection.

.Timerplay

for

initiating

disc

play

atadesiredtime

commercially

available

timer

isrequired).

. lndex

functionfor

quickly

locatingadesired

part

* Example:

A moræment

in asymphony.tndexsearchcân beusedonly for discs

havingindex numbers.

Suchdiscs have @:ffi) matk

SAFETY.RELATÊD COMPONENT

WARNINGI I

COMPONENTS

IDENTIFIED BY SHADING AND MARK

$ oru rxe scHEMATtc DIAcRAMS AND lN THE

PARTS LIST ARE CRITICAL TO SAFE OPERATION'

REPLACE

THESE

COMPONENTS

WITH SONY PARTS

WHOSE

PARTNUMBËRS

APPEAR

AS SHOWN

IN THIS

MANUAL OR IN SUPPLEMENTS

PUBLISHED

BY SONY.

CONTENTS

Section Title

SPECIFICATIONS

. I

FEATURES .........2

MODELIDENTIFICATION. .........3

SAFETYCHECK-OUT ........3

PROTECTION

OFEYESFROM

LASERBEAMDURING SERVICING. .4

SERVICTNGNOTE. .........5

LOCATION

AND FUNCTIONOF CONTROLS

. . .6

SECTIONl. ADJUSTMENTS... ...7-9

SECTION

2. DIAGRAMS

2.1. PRINTEDWIRING

BOARDS

. . .IO-12

2-2, SCHEMATIC

DIAGRAM t3-17

TcBLOCKDIAGRAMS ...18-19

DESCR|PTfON

OF1C101

(MSC6458}

. . . . . 20-2r

SECTION

3. EXPLODED

VIEWS

AND PARTS

LlsT.. ....22-2s

SECTION

4. ELECTRICAL

PARTS

LlsT.. ....26-29

TROUBLESHOOTING ......30

ATTENTION

AUCOMPOSANT

AYANTRAPPORT

A LA

SÉCURITÉI

LESCoMP(NANTS

IDENTIFIÉS

PAR UNE TRAME ET

uNE MAROUE l\ SUn LËS DIAGRAMMESSCHÉ'

MATIoUES

ET LA LTSTE

DESPIÈCESSONTCRITIOUES

POUR

LA SÉCURITÉ

DE FONCTIONNEMENT.

NE REM-

PLACER CES COMPOSANTS

OUE PAR DES PIÈCES

SONY DONT LESNUMÉROS

SONT

DONNÉSDANS

MANUEL OU DANS LES

SUPPLËMÊNTS

PUBLIËS

PAR

SONY.

Page

-2-

cDP-68/2O7ESD

/75O

MODELIDENTIFICATION

- Specification Labels-

US,

Canadian

model:AC: 120

V-60 Hz12W

AEPmodel:AC:220V-50/60 Hz12W

UK model:

AC:240

V-50/60 Hz

12VÙ

Emodef

: AC: 110-120V,22O-24OV

-50/60 Hz12W

SAFETYCHECK.OUT

After correcting the original service problem,

perform the following safety check before releasing

the set to the customer:

Checkthe antenna terminals, metal trim, "metallized"

knobs, screws, and all other exposed metal parts for

AC leakage. Check leakageas

described

below.

LEAKAGE TEST

The AC leakage

from any exposed

metal part to

earth gtound and from all exposed

metal parts

to any

exposedmetal part having a return to chassis,

must

not exceed 0.5mA (500 microampers). Leakage

current can be measured bv anv one of three

methods.

I . A commercial leakage tester, such as the

Simpson 229 or RCA WT-540A. Follow the

manufacturers'

instructionsto usetheseinstru-

ments.

2. A battery-operated

AC milliammeter. The Data

Precision

245 digital multimeter is suitablefor

this job.

3. Measuringthe voltage

drop across

a resistor

means

of .a VOM or battery-operatedAC volt-

meter. The "limit" indication is 0.75V, so

analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa

SH-63Trd are examplesof a passive

VOM that

is suitable. Nearly all battery operated digital

multimeters that have a 2V AC range are

suitable. (See

Fig. A)

cDP-68

CDP.20TESD

COMPACT

DISCPLAYER

AC:120V 60Hz 12W

SERIALNO.

MADE

JAPAN

MODIL

NO. CDP.7sO

COMPACT

DISC

PLAYER

SERIAL NO,

MADE IN JAPAN

To Exposed Metal

Partson Set

O.l5yF AC

voltmeter

(o.75V)

? Earth Ground

Using

anAC voltmeter to checkAC leakage.

ig. A.

-3-

cDP-68/2O7ESD/75O

PROTECTION

EYES

FROMLASER

BEAM

DURING

SERVICING

This set employsalaser.Therefore,besure

to fol-

low carefullythe instructions

below

whenservicing.

CAUTION

Use

of controls

or adjustments

or performance

of procedures

otherthanthose

specified

herein

mayresult

inhazardous

radiation

exposure.

l. LaserDiode

Properties

o Material: GaAlAs

o Wavelength:

780nm

a EmissionDuration: continuous

o LaserOutput: max.

44.6

PW*

* Thisoutputis thevaluemeasured

atadistanc€of

about200mmfrom theobjectivelens

surface

theOptical

Pick-up

Block.

2. During service,

do not take the Optical Pick-up

Block apart, and do not adjustthe APC circuit.

If thereisa breakdown

in theAPC

circuit(includ-

ing laserdiode),replacethe entireOptiocalPick-

up Block

(including

APCborad).

BESKYTTELSE

@JNE

MODLASERSTRALING

UNDERSERVICE

I dette apparat anvendeslaserlys. Derfor skal I

nedenstâende

instruktioner

nojefolgesunderservice.

Folg iovrigt instruktionernei servicemanualen.

ADVARSEL!!

Under

selice mâojnene

ikko kommonærobjektiv-linsen

pâ den optiske pick-up enhed. I tllfældo af tt d€t e.

nodvendigt at kontrollere udsendelsen af larerlye, skal

det ske i en afstand af mere end 25cm fra den optisko

pick-up.

LASER

ADVARSEL

MÆRKNING

Folgendemærkning

findes

indvendig

i apparatet:

l. Advarsel

Mærkning

. Laser-didoe

data

o Materiale:GaAlAs

o Balgelængde:

780nm

. Udstrâling:

Kontinuerlig

a Laseroutput:

Max.0,4

mW*

* Màlt i 1,6

mm afstand

fra overfladen

af objektiv-

linsen

pâ

den

optiske

pick-up

enhed.

o Klassifikation: Klasse

IIIb.

2. Adskil aldrig den optiske pick-up enhed under

service,ogjuster ikke APC kredslsbet(Automatic

Power Control). Hvis APC kredslsbet

(incl. laser-

dioden) bryder ned, skal heleden optiske pick-up

enhed

(incl. APCprintkortet) udskiftes.

CAUTTON : rivrsrar€ rasEn BlDrlrrot taEt oPE{

^ro rrrEaLoc(s oEaE^t€o AvorocrPosuFE

1o ô€^x

AOVARSEL : usv|rrc LAsErsrÀlLr{G v€o ^art{c

Nln srx(€RHEoSATEFyoEFE

EFuoÉ aa tuNtrrot uNocl

uosÆtrE!s€

rot sTnl!rxc

VAROITUS: Laitesisâltââ,

laserdiodin,

jokalâhettââ

(nâkymâtôntâ)

silnrille

vaarallistalasersateilyâ.

-4-

cDP-68

/207Es,D/75,0

NOTES

ON HANDLING

THE OPTICAL

PICK.

UP BLOCKOR BASEUNIT

The laser diode in the optical pick-up block may

suffer electrostatic

breakdown because

of the poten-

tial difference

generated

by the charged

electrostatrc

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.isincluded

in the repair

parts.

The flexible board is easily damaged

and should be

handledwith care.

NOÎESON LASERDIODE

EMISSION

CHECK

Thelaser

beam

on this

model

isconccntrated

as to be focused on the disc reflective surfaceby the

objective lens in the optical pick-up block. There-

fore, when checkingthe lasçrdiodeemission,

obserye

more than 25 cm awayfrom the objective

lens.

Flexible Circuit Board Repairing

o Keep the temperature of the soldering iron around

270oC during repairing.

a Do not touch the soldering iron on the same

conduc-

tor of the circuit board (within 3 times).

o Be careful not to apply force on the conductor when

solderingor unsoldering.

Noteson chip component replacement

o Neverreuse

a disconnected chip component.

o Notice that the minus side of a tantalum capacitor

may be damaged

by heat.

- SERVICING

NOTE

LASERDIODE

AND FOCUS

SERCH

OPERATION

CHECK

l. MakePOWER

switchon with no disc

inserted

and

disc

table

closed.

2. Confirm that the operation

indicated

in Fig. A is

performedwhile observing

theobjectinglens.

@ Cortir- thattser beamisspread.

@ Upanddown motion of theobjactiye

lens (3 timesl

Fig. A

FNONT SIDE

-5- -- -'t

cDP-68/2O7ESD/75O

îD

€

rtr

gs I

-e

€

îr

nË

3âË

A=l

Ë*

ËË

Ëg

TË

zut

-2

oÀ

trF

Jt!

-6-

sEcTtoN

ADJUSTMENTS

ELECTR:CALADJUSTMENTS

l. Performadjustmentsin the order given.

2. UseYEDS-I8

(Part

No.:3-702-l0l{l) disc

unless

otherwise

indicated.

3. Usethe oscilloscope

with more than l0 MO im-

pedance.

RF PLL Frequency Adjurtment/Lod< Freguency

Gheck

Proccdruc:

flequancy counter

tftatn Doitfo l-=l

-lLll

rppcKl o---5-l

rp--J

l. Connecttest

pointTP

(ASY)to ground

withlead

wue.

2. TurnPOWER

switchon.

3. Connect

the frequency

counterto testpoint TP

(PCK).

4. Adjust RVl05 so that the reading

on frequency

counteris

4.3218MHz

30kHz.

(RF PLL frequency

adjustment)

5. Removelead wire connecting

TP (ASY) to

ground.

6. Put

disc

(YEDS-t

8)inand

press

> button.

7. Confirm that thereading

on frequencycounter

4.3218MHz.

Adjustmcnt

Location: mainboard

A.G)

RVIOS e

TP (ASY)

COMPONENT SIDE (FRONT)

E-FBrlrnco Adjurtmcnt

This adjustmentshouldbe

Optical

pick-up

Block.

hoccdurc:

made when rcplacing

oscilloæopc

(DC nngêl

main bærd

TP(TEOI

Connecttest point TP (ADJ) and test point TP

(TE I) to ground

with leadwire.

Connectoscilloscope

to testpoint TP (TEO).

Turn POWER

switch on.

Putdisc

(YEDS-I8)in and

press

> button.

Adjust RVl0l so that the traversewaveform is

symmetrical

above

and

below.

After adjustment,

remove

thelead

wireconnected

in step

5. IA-g

(within 5%l

VOLT/D|V: , V

TIME/DIV: I ms

Adjustmcnt

Locetion: mainboard

TP (A.G)

nvt0l

COMPONENT

SIDE (FRONTI

.tu -7-

cDP-68

/207ESD/75,0

Focur BiasAdjustment

This adjustment

should

Optical pick-upBlock.

hoccdurc:

be made when replacing

otcilloscope

(DC rangel

npin bærd

TPIBF)

fP (AFG)

l. Connect

oscilloscope

to test point TP (RF) and

test

point

(RFG).

2. Turn POllrER

switch

on.

3. Putdisc

(YEDS-I8)in and

press

> button.

4. Adjust RVl02 for an optimumwaveform

eye

pat-

tern or so that the peakis maximum.Optimum

eyepattern

means

that shape" O,' canbeclearly

distinguished

at thecenterof the waveform.

EF signal waycform

A - t.2V x 0.2 (Vp-p)

Adjustment Location: main board

(A.GI

-e-

(RFI

COMPONENT

SIDE (FRONT)

FocusÆrack

ingGainAdiustment

A frequency response

analyzer

is necessary

orderto perform

this

adjustmentexactly.

However,

this gain has

a margin,

so even

if it is Nolr

slightly off, thereis no problem. Therefore,do not

perform

this

adjustment.

Focus/trackinggain

determines

thepick-up

follow_

up (verticaland horizontal) relativeto mechanical

noiseand mechanical

shockwhen the 2.axis

device

operate.

However,asthese

reciprocate,

the

adjustrnent

the

point

where

both

aresatisfied.

o lVhen gain is raised,

the noisewhen the 2-axis

device

operates

increases.

a Whengain is lowered,it is more susceptible

mechanical

shock

andskipping

occurs

easily.

a lilhen

gain

adjustment

off, the

symptoms

below

appear.

2. lt

3.C

4.4

ill

-si

olc

Grin

SymptorË Focur Træking

oThetimeuntilmusic

ataris

becomes

longer

for STOP

+>PLÂY orautomatic

selection

(li{. }}lburtons

pressed.

(Normally

takes

about

2seconds.)

low lowor high

oMusicdoesnotstart

and

disc

continuesto rotate

for

STOP+DPLAY

automalic

selection

(

)}l butrons

pressed.)

low

oDisc rableopens

shortly

AftCI

STOP+>PLAY. low or high

oSound

isinterrupted

dur-

ing

PLAY. Orlimecount-

display

stops

progress-

ing.

low

oMore

poise

during

2-axis

deviceoperation. high high

-8- af-u

following is

asimpleadjustment

method.

le Adjustment -

Connectoscilloscope

to mainboardTP(TEO).

Adjust RVl04 sothat thewaveform

isasshown

the figuç below.(tracking gain

adjustment)

Sinctexactadjustment

cannot

beperformed,

rcmem-

berthe positions

of thecontrols

before

performing

the

adjustment. lf the positions

after thesimple

adjust-

ment

arconly a little different,

returnthecontrols

the

original

position. oscillo*oge

VOLT/DIV: I V

TIME/DIV:2mS

(DC tengpl

npin bærd

TPtFEOt

OË--+C+

(TEOI

æ- -t

o IncorrectExamples

(fundamental

wave

appears)

low trêcking grain

the sethorizontal. VOLT/DIV: t V

TIME/D|V: 2nS

-0v

the set is not horizontal,

this adjustment\

,not be performed due to the gravity

against

2 axisdevice. I

disc(YED$I8: Fifth Selection)

and press

PLAY button-

oscilloscope to main amp board TP

EO).

RVl03 so that the waveform is asshown VOLT/DIV: I V

TIME/DIV: 2 mS

the figure below. (focus gain adjustment)

VOLT/DIV: tOOmV

TIME/DIV: 2mS

-td)mV

-ov

-0v

t Examples

(DC level changes

more than Adjustment Location: main board

adjusted

waveform)

low focus goin TP

A.G)

îEO) TP

(TEII

(FE I1

TP RVtUI

(FEOI

BVI04

COMPONENTSIDE

IFRONT)

VOLT/DIV: tùO

TIME/DIV: 2mS

- 25O

-0v

VOLT/D|V: t0O

TIME/D|V: 2mS

- IOO

-75 mV

_ov

high træking goin

(highar fundamental mve than for tow gain!

o Semiconductors Lead Layout

M52301-A

M523rïL 2SB1274SA

2SDr

3SA

f\a

ta'l

;i(

8c e

M5290P-16

TA84O6P

, i , .,

HZ59B2L

RDs.lESB

MSC6458-17SS

(Îop viewl

SSl 32

10E2

TDA1

541

cxK5816M-10L

2SA1

345

2SC3399

2SC3402

2SC3860

M5218P

tvrt4Hc6004P

aPC457OC

I76 5

I2 Jé

2SB1

2SC3622AK

cDP-68/207ESD

/750

Note:

. Colorcode

or sleevingover

the endof the iacket.

sEcTroN

DIAGRAMS 2.1. PRINTEDWIRI

(MAIN

BOARD

o- : parts

extracted

from the componentside

I : parts

mountedon the conductor

side.

i-i indicatessideidenrif

iedwith part number

o-1< : Jumperwire connected

to the groundpattern

m the componentside.

f-o

H-5

t'z

J-7

D-4

g-4

l-J

È- tb

D-4

o-4

È-o

D-3

c-3

ô- a

H-4

t-4

J-2

ô- z

ô-z

B-3

6-Z

B-3

c-?

c-2

D-3

u-J

o-3

t-14

-6

o-5

D-6

u_o

L_D

u-f,

u-)

E_J

c-4

u-5

H-10

l- 14

t-14

t- l4

r*9

rcl

rc2

tc3

tc4

tc5

tc6

rc7

rc8

tc9

rc10

rcrl

rc12

rc13

rct

102

rc201

uf,

ot0

oll

at2

o13

o14

o15

o20

02r

o22

v<J

024

o601

o602

o603

o604

o605

010

Dll

o12

UIJ

014

D105

106

0601

0602

0603

0604

0605

D606

D607

0608

oEflB;

" ô-pfF

cTs

e{l-o

c3redF

carTdF

car60*l+--0

csrsëlF

cu4oJl-{

car3o{l-{

Ë*Ët

-t0-

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