Sony MEGA BASS CFD-073 Manuale utente

SERI|ICE

MANUAT US Model

Canadian

Model

AEP Model

UK Model

E Model

MreABl$S

SPECIFICATIONS

AUDIO

POWER

SPECIFICATIONS

Full-range

speakers:

With

3-ohm

loads,both

channels

driven

from

200-10,000

Hz:

rated

3.5Wper

channel

mini-

mum

RMS

power,

with

nomorethan

100/ototal

harmonic

distortion

ACoperation.

Super

woofer:

With4-ohm

loads,

driven

from50-250 Hz:rat-

8W minimum

RMS

Power,

with

nomore

than

100/ototal

harmonic

distortion

inAC

operation.

OTHER

SPECIFICAÏIONS

Tape

recorder

section andgeneral

Recording

system 4-trâck

z'channel

stereo

Fast

winding

time Approx.

2min.

withSony

cassette

CbO

Frequency

response 60- 10,000

Full-range

speakers:

10cmdia.,

Super

woolel:

8cmdia.

Full-range

speakers:

4W+

4W(at

3ôhms'

100/0

harmonicdistortion) '

Super

woofer:9 W(ai4ohms.

100Hz,'

10o/oharmonic

distodion)

Inputs Mixing

microphone

input

jack

(miniiack)

SensitivitY

2.5

For

low

imPedance

microphone

Two

line

inPut

iacks

(Phono

iacks)

Sensitivity044V ':

Input

impedance

47kilohms

orhiOhâr

- Continued

onnext

Page

RADIO

CASSETTE.GORDER

Radioseclion

Frequency

range

Antennas

Speaker

Power

oulput

FM:Telescopic

anlennâ

AM:

Built-in

ferritebar

antenna

playersection

System

Laserdiode

Properlles

Spindle

speed

Error

correclron

Number

ofchannels

Frequency

resPonse

Wow

andflutter

Compacl

discdigilal

audiosystem

iilaterial:

GaAlAs

Wavelength

780

Emission

durâtion:

Continuous

Laser

output:

Lessthan

44.6

tW'

' Thisoutput

isthe

valuemeasured

aladis-

tanceofaboul

200

mmfromlheobjective

lenssurface

theoplical

pick-up

block.

200

(p.m.

lo500

r.p.m.

(CLV)

Sony

Super

Strategy

Cross

lnlerleave

Read

Solomon

Code

Two

20-2O,OOO

:9'

Below

masurable

limit

Model

NameUsing

Similar

Mechanism

CDSection CFD-D75

cFs.Dsfl)

cFs-D960

TapeSection

Optical

Device

Name KSM.lsOBGN

Tape

Transport

MechanismTyPe MF.D7962

FM AM

AEP,UK model 87.6

- 107MHz 531

- 1602kHz

US,Canadian,

E model 87.6

- 108

MHz 530

- 1605

kHz

SOI\TY

Outpuls

Power

requirements

Batterylife

Dimensions

Weight

Headphones

jack

(slereo

minijack)

For16-68 ohmsimpedanceheadphones

Two

CDoutput

jacks

(phono

iack)

Load

impedance

10kilohmsorhigher

Rated

output

1.1Vrmsatload

impêdance

47kilohms

12VOC,

eightR20

(size

batreriesfor

radiocasselte-corder

ThreeRG

(sizeAA) batteriesfortimer€tock

Batteries

forCDradio

casselte-corder

6N x 1725

x 198.5mm(w/h/d)

(24r/sx 6trt

x 7%inches)

incl.

projecting

parts

andcontrols

Approx.Z2 k9,incl.

batteries

TABLE OF CONTENTS

Section

Specifications

Title Page

Features

1. SERVICING

NOTES

Safety Check-out

Not€son Handling

the OpticalPick-up

Block or BaseUnit

ChuckPlate

Jigon Repairing

)

(Approx.

15lb 14

oz)

Supplied

accessory AC

powercord(1)

Oesignandspecifications

subjecttochangewithoutnotice.

CFD-D73isanFM/AM

compact

disc

cassette-corder.

High technical device

Theauto-reverse

functionwhich

enables

torecord

without

turning

overthe

cassetle.

High quality sound

Powerful

bassisproduced

with

theSony

MEGA

BASS

system.

Thisunitincorporates

asup€r

woofeiwhich

hasits

o!,/namplifi-

erseparatefrom

theonefor

thefull-range

speaker

High performance, high lidelity CD player with many

tunctions

. Repeat

functionfor

playing

either

theentire

disc

oradesired

selection.

. Program

play

for

playing

selections

inthe

desired

order.

. Shuffle

play

torplaying

seleclions

repeatedly

i! random

order

Oigital

clock timer

Waks

uptoaradio,

taped

orCD

program

orrecord

radio

program

atlhepresel

time.

GENERAL

Location andFunction of Controls

Settingthe

Clock

Disc Playing

3. DISASSEMBLY

4. ADJUSTMÊNTS

4-1. Mechanism

Adjustment

4-2, Electrical

Àdljustments

)-l.

5-2.

f,-J.

5-4.

Tape

Recorder

Section .

RadioSection

CDSection

DIAGRAMS

Circuit BoardsLocation

RadioSectionPrintedWfuing

Boards . . . .

Radio

Section

SchematicDiagram

. . . . . .

TapeRecorder

and

AudioSection

Printed

Wiring

Boards

. ......23

5-5. TapeRecorder

aûd

AudioSection

SchematicDiagram .... -.... 27

5-6. CDsectionschematicDiagram

........ 3l

5-7. CDSectionPrinted

Wiring

Boards

..... . 35

6. EXPLODEDVTEWS. .......39

7. ELECTRICAL

PARTS

LIST

.... .. .. . 47

SAFETY.RELATED

COMPONENT

WARNING!

coMFoNENTS

tDENItFtED

By MARK

I on oorreo

L|NEW|TH

MARK

a ONTHE

SCHEMATTC

DTAGRAMS

ANO IN THE PARIS LIST

ARECRITTCAL

TOSAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONYPARTS

WHOSE

PABT NUMBERS

APPEAR

SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB.

LISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À r_r

sÉcunrrÉ

LES

COMpOsaNrs

tDENTtFtÉs

pAR

UNE

MAROUE

SURLES

DIAGRAMMES

SCHÉMATIOUES

LA LISiE

DEs ptÈcÊs

soNT cRtrteuÈs pouR r_a

sÉcuniÈ

OE FONCTIONNEMENT.

NE REMPLACEB

CESCOM.

POSANTS

OUE PAR DESPIÈCES

SONY

DONT

LES

NUMÉRos

soNT DoNNÉsDANScE MANUEL

DANS

LES

SUPPLÉMENTS

PUBLIÉS

PAR

SONY.

US,Canadian

model 120

VAC.60Hz

AEPmodel 220V AC.50 Hz

model 240VAC.50Hz

E model 1

10.120V.22Oor 24OVAC

adiustable,50/60Hz

Power

Comnsumption

AEPmodel 25W

US,UKmodel 27W

E model 20W

Canadian model 37W

FMRecording Playback

Sony

SUM-1

(NS) approx.

2H approx.

SonyAlkalineAM1

(N) approx.35H approx.

-2-

sEcTloN

SERVICING

NOTES

oSAFETY

CHECK.OUT

After correcting the original service problem,

perfolm the following safety check before releasing

the setto the customer:

Check the antennâ terminals, metal trim, "metallized"

knobs, screws,and all other exposedmetal parts for

AC leakage. Check leakageasdescribed below'

LEAKAGE TEST

The AC leakage

from any exposedmetal 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 rnicroampers). Leakage

current can be measured by any one of three

methods.

l. A commercial leakage tester, such as the

Simpson 229 or RCA WT-540A. Follow the

manufacturers' instructions to use theseinstru-

ments.

2- A ba

ttery-operated AC milliammeter. The Data

Precision 245 digital multimeter is suitable for

this

job.

3. Measuring

the voltage drop acrossa resistorby

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 examplesof a passive

VOM that

is suitâble. Nearly all battery operated digital

multimeters that have a 2V AC range are

suitable. (See

Fig.A)

To Exposed Metal

Parts on Set

O.r

Fig.A. Using

anAC voltmeter to checkAC leakage'

US model

: AC:

Canadian model:

AEP model

: AC:

UK model

: AC:

E model

: AC:

12OY6QHz27W

AC: 120V

60Hz

37W

22OY-5OHz 25W

240V-5OHz 27W

11O,/12O,/

22O,/24OV

-5O,r 6OHz20w

CAUTION

Use

of controls

or adjustments

or performance

of proceduresother than those

specified

herein

mav result

in hazardous

radiation

exposure'

Model ldentlflcatlon

MODEL

NO. CFD-D73

CD RADIO

CASSETTE-CORDER

DC: 12V FLASHLIGHT

BATTERY

SIZE

D R2O

X8 OR EOUIVALENT

: 4.5V FLASHLIGHT

BATTERY

(COMPUTER,,,CLOCK)

SIZE

AA R6 X3 OR EOUIVALENT

SECTION

NOTES

ON HANDLINGTHE OPTICAL

PICK.

UP BLOCKOR BASE UNIT

The laser diode in the optical pick-up block may

suffer electrostatic breakdown because

of the poten_

tial difference generatedby 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.

NOTES ON LASER DIODE EMISSION CHÊCK

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

than25 cm awayfrom theobjective

lens.

LASER DIODE AND FOCUS SEARCH

OPERATION CHECK

l. Turn POWER switch on with no disc

inseted and

make Function switch to CD position.

2. Openthe lid for CD.

3. Turn on 5702 asfollowing figure.

4. Pre.ss

) key.

5. Confirm the laser diode emission while observing

the objecting lens. When there is no emission,

Auto Power Control circuit or Optical pick-up is

broken.

Objective lens movesup and down threetimes for

the focus search.

CHUCKPLATE

JIG ON REPAIRING

On repairingCD section, playing a discwithout the

CDlid, use

ChuckPlate

Jig.

. Codenumber

ofChuckPlate

Jig:

X4918-255-l

NOTE ON REPAIRING

The spindle

motor (M702) andthe tumtable

assem_

bly are

individually supplied

asrepairpads.

When repairingM702, please

order the turntable

assembly

together.

Dimension

isasfollows.

turntable assemblv

19.4t0.Inm

spindlemotor (M702)

Turn oô S7O2with

€ slender

screwdrive..

-4-

-€

Ë * iËeg

n Ëa Ë ËsËËË

gssi;galËËËËgËâË,gsgF

E€€

âËï

eHE

g Ë CH E

ë. ; É= Ë

*Ëââ;

s : " uÉ

! s Ë Ë!t Ë

E EiË.t *Ë

ËÈç t

EsËigË$eeeiiËgËs*H

Ë= Ë , e*

gÊ

si ! H EËrËË

ËsËËet;gËgEE

È ËËgË

ËËË: rgss^e

ËlËËiË,ËË

ËË

ËËË

ËiË,Ë

ëEE EE]E EE E E

sEcTtoN2

GENERAL

@BE@EBtE] BE] ts

@86

tr EE} r.1JEJ t!.1 t-!l tll tlj

-5-

l-fl Fe,

Ii1-EE*

| .T-l

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sô

ts.fl

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s!E

-dul

.:ï

d.-

EI;TI

rlÈtl

.g I crl

3| -il

t I cll

rl ll

ELAJ

ËHo

ÉiËËË

Ël*Ë,!F

-;:-r E

l..-l--E

lrnl fl.E

t-tl

l^ll

I ut :E

#Ë

Ël;,Ëg

3Ë3Ë

tr.oÊ Ëse,iËËe

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à i=

RË E 9 ?

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Eg 6 5 ,

,lË r c c.r

-ëo

* sd

ir$ g

ËÊ.ËE

(aç

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tE e$

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EË Ërl

EË

ggË

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E€EË€

sÉ!gË

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ËsgË,Ë

ËiiËgËËiË

lrlt

IâII Ë

tstiÈ

3sËs

4Ë

ÈT

.Ê

È;

*É

.l|

^ rnm

i illll;lFllr

.i, ml[:1ll

E ! ,

lùlt

z 8 [-1, L-J

=_s

tÈ.

ûd rll

Ët lllEt

Ë: tu

EË

;

r--::--! x

lçlËÊ

I ru

| Ëi

|--

|Ëçr

| |

ris

l^ llFÉ

tË të[g

' '!àÈ

iËt

É;;

{ ôl

s€

çÈ

ë€

.5È

t=E

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<Ë

iâo

III

!Ë

-6-

-L*

pJEoq

o!pBr

-8-

zl xgA8+

ôurdder

ouvo8otovuoNvstssvHc

u3NnI

lâu!q93 J9ddn

e^€+

6ulddet

s3t'lsl,rSssv

r3Ntsv9 uvld oNv lNouJ

'us^!6

ropJo

leJlraurnu

3ql u! êrnparord ^lqurassgslpaql |\^ollol :9loN

^lgl |3SSVStO

Norrcrs

'6 âABdâaS

0Nt:)Ntuls

ouoc 'tvlo

^lqlu9ss8

tautqec rsa.l

plt^Jatleq

s!8seqc

raun!

x eg+'6u!ddBr

pue

('srd

Z)Z

x 0Ag+'ôuldder

olpeJ

eqluo

tdNc ruorl

peal

euuslueaql

lno llndo

1/iih\

-t((

DIAL CORD

STRINGING

1. Preparation

tension

5O0

2. Dial

Cord

Stringing

3. DialPointer

Setting

l) Suspend

rhe

fixingptate

to spring.

-k5\.

t@ 3 tu.n

@ Suspendthe dial cord

to t porlion.

+[+

@ Setas

above.

-9-

KS ---{ly)

_'<iill

O Turn

the

tuningknob

fully In the direction of arrow.

---1--

CFD-D73 |SECTION

pinchrollers

rubberbelts

idlers

4.1. MECHANICAL

ADJUSTMENT

TAPE RECORDER

SECTION

PRECAUTION

I. Clean the following Palts with a

âlcohol-moistened

swâb:

denatured-

record/plaYback

head

erase

head

capstans

2. Demagnetize

the record/playback/erase

headwith

head

demagnetizer.

3. Do not use â magnetized

screwdriver

for the

adjustments.

4. After the adjustments,

applysuitable

locking com-

pound

to theParts

adjusted.

5. The adjustments

should beperformedin the order

eiven

in thisservice

manual.

ADJUSTMENTS

Head

HeightAdiusltnent

Adjustmcnt Procedure:

1. Insert

mirrorcassette

CQ-009C.

2. Maketheset

to FWD

playbackmode.

3. Loosen the FWD tape guide fixing screw and

adjust with inserting the adjustingshim to eumi-

nate tape curl and tape twist i'l the portions of

tape

guide

and

head.

4. Make

theset

to REVplayback

mode.

5. Loosen the REV tape guide fixing screw aûd

adjust with inserting the adjustingshim to elimi-

nate tape curl and tap€ twist in the portions of

tape

guide

and

head.

6. After adjustmeflt, apply suitable locking com-

poundto the fixing screws.

Adjwtment Locstion:

Torque

Measurcment

Mod. lorgua matar Malrr rcrding

FWD cQ-102C

221o

g'cm

(0.30to 0.76oz'inch)

FWD

back

tension 3.0to 5.0

g.crn

(0.04to 0.06oz'inch)

REV cQ-l02Rc

25to 55

g'cm

(0.34to 0.?6oz'inch)

REV

backtension 2.5

to 5.0

g'cm

(0.04to 0.06oz'inch)

FF cq20l D80

to 135

g'cm

(1.10

to 1.84

oz'inch)

REW cQ-201B 80

to 135

g'cm

(1.10

to 1.84

oz'inch)

TapeTcnsion

Modo Tln3ion mltar Mctcr r!sding

FWD cQ403A morethân

110

(more

than3.88oz)

REV cR-403R

haêd haight âdiusting

shin (R)

Plrt No. 1

3-344-7

66-01 0.1

3-344-766-110.2

3.344-1

66-3t 0.3

Prrt No. i

3-144-7

65-01 0.1

3-344-765-rr 0.2

3.344-765-21 0.3

-10-

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