Sony CFS-950 Service Manual

SERVICE

MANUAL

US

Model

F,equency

Tap. F€cofd Fasr

range

Gcorde.

nq

syslem

w nd nO rm€

FM AM FM

AM

section

Appror

j03MN,

€/6 530 I 605 kfz

Te

escop c anrenna

Bu

r€(

'n

general

and

2 mrn

187

1566

te ba.

antenna

w th Sony

m)

casseite

SPECIFICATIONS

C 60

Oim€ns

ons

Canadian

Approx.45o,139 5 x

nc prorecting

Approx.25

t

71:

sri ' 3Lr rnches)

1r

pa

(5lb

ko

AEP

UK Model

955

mm

lwh/d) s and conrots 3 02) nc

ba

Model Model

er€s

Powe,

consumpnonla

Ba er€s '

.-

r Ev€,eady No 1235

ror nar muo pedormance

-cd,

\o r9r A-d

nF=

Fu ranqe

r0

cm

(4

fzw*zw

10 harmon.

1ar Two

€xre,na

lm,n

la.kslsens

ror

ow mpedance

H€adphones

3 300 ohh mpedance

9V dc.

s'x batleres

oc tN

sv

canad 3n moda mode

t,240v 3c,50 Hz DCC.t20 use on

l2 v car b*rery

W ac

Heavy

Ouly we r€commeid

d sloflron)al

m crophone

rack lslereo

jack

acceps

r20!d.

),220v.c, so Hz

car

bar'y cod

FM Record

'iches)d'a

1v

ly 044 mV

mrcrophone

m niack) ro.

headphones

s ze C

60H7

luK mode

lopriona|

lh€ useor

dc opera

rnpur

1EC

na

,2

racks

(55

dB)

desiqna.

r-s

(AEP

I

ro

I

FM/AM

r"p"

I

r-*e.n

SAFETY.RELATED

COMPONENTS

ON

!, PARTS REPLACE WHOSE

MANUAL

ATTENTION

LES

COMPOSANTS

UNE

MARoUE MATtouEs PO(JR

LA SECURIIC pLAcER

SONY

DONI

MANUEL

STERTO

M*hr!4!!llq1)so.7s

COMPONENT

IDFNTIFIEO

TXE

SCHEMATIC

LIST

ARE

THESE

PART

OR IN

ET cEs

OIJ OANS

CRITICAL

COMPONENTS

NUMAERS

SUPPL€MENTS

AUCOMPOSANT

A LASECURITE!

IOENTIFICS

suR

1i\

LA LtsTE coMposaNTs

LES

DEspttcEssoNTcRtTtouEs

DE

FONCTIONNEMENT,

NUMEROS

LES SUPPLTMENTS

CASSETTE-CORDtR

WARNING.

BY SHAOII\IG OIACRAMS

TO SAFE

APPEAR

WITH SONY

AS SHOWN

PUBfISHED

AYANT

PAR

rEs otaGRAMMEs

ouE

SONT

AND

ANO IN

OPERATION,

RAPPORT

UNE

TRAME

paR

oEs

DONNES

PUALITS

l

MARK

THE

PARTS

IN IHIS

BY SONY

ET

scHE_

NE REM

pttcEs

DANS

CE

PAR

SONY

cFs-950

LOCATION

O*""-'

\u'i'H

OPR/BATT indicator

O

VOLUME control

O

ToNE conkol

O

FUNCTION seleclor

O

REc MUTE

O

(extornar

MrC

EXT

O

OF CONTROLS

OREc",r

\@

{record

mulins)bullon

microphone inpul)jacks

oE^r-c

Auill.in microphone

iD

Telescopic anlenn6

O

TUNING knob and dial scale

O

STOP/EJEcT bolron

I

@

(record)b!lton

REC

a

O

(D

>t +a

O (D

ll

cassett€

O

< >

O

<

O

indicalor

(D

Ballery comp.rhenl

r

@

oC lN 9v

{D

(rewind)

REW

bu1io.

FF (lasriorward) bullon

PAUSE butlon

OIR

DIR

holder (tape

(r.pe

>

{FWD,

loct

and

tansporr

hansport direction) REV)

(rear)

(headphones)

jack

(erlernalpower input)jack

plate

direcrion)

SAFETY

After conr.lhg the origilal service

p.

fo n hp I losr'r

the set to the custonrer: (heck

the rntcnna lerminlls,metal trin, knobs, screvs, and all other exposed AC leakase. Check leakace as

LEAKAGE

The A( leaklee fron any

ground

earth exFosed metll not exceed 05 mA current cln

I

A S,mp\on l:9 or., RC.{ W] 5.104. Irollow lhc mrnufa.tu.e.s lnstructiols to

:. A balrdy operated AC

Preoision

CHECK-OUT

..ier,

T€ST

a.d ffom

plrt

be nca\urcd by any one oi thfee

cornmcrcial leakagd le(er. $rch !i the

2.15 digital nrultimetcr

lll

hrving

(500

cxposcd

J relur! Io chlssis. nNsl

(US

Lrlo

I

L

nctdl

de\cnhsd belo{.

cxposed nelal

etal

Di.rolnpe6) Leakrse

use

milliammerer.

Model)

rroblcn.

. .

rr' .,f

"nelalli/ed'

ior

trrl\

parl

parts

lo .r,v

rn\iru-

the\e

Data

Thc

i\ \ullrbl. lor

to

Y.r nng lhe

merns

ol a tr.t.r. analog !ollag. scrl€.

SIl63lid are cxanrples ol o

is surt!ble. NeNrly

nrullimelers

sultrble.

Ftg.

A. Using an AC voltmetet

voltige

VONI

_limit

Thc

cters

The

thaL hale a :

(See

Fis

du\l havc !i lc.nratc lo{

drop across a resislor

or brtter!{tcrrlcd AC

i.dicali{nr

Snnpson:5{l !nd

Nll battcr,!

A)

is 0 i5 V. so

lissive

VO}{

opcfur.d disitrl

V,{C.!nge.re

to check AC leakage

h!

voLl.

Slnwa

that

Y

2

TELESCOPIC

SECTION

1

BLOCK DIAGBAM

cFs-95()

FERRIE NOD

AIS

ANT

Y

Mtc Lol

Jt0l

Iaxr]iq

lrl

L

nev

s50r I

REV

s30l

REC/PB

REC

I

P8

s30r-2

ttF

5it

T30l

8ra5

0sc

s302

p-N-l

lTuN--r

I {

{RAOIO OFFI

lc30l{1/2)

tc30tt|/2)

EO

STITCNING

R-CH

J

cF5-950

l,,uro-

l* FoNEl

s304

(Ats

B+t

rc50l

8+

s30r-6

REC/PB

REC

I

PB

$02_4

s502

fiuN.ronl

t t

TAPE

(FAol0

oFF)

s302-a

RCH

-

DRY BATTERY

I

E

J30 |

PHONE

s2,4

sP90l

6\

CNJ6

Iocrx]q

@GO

'C"

5r?E

DESI6NATION R 4)

6PCS.9V

BrAS

s3o2

FuNcrLofl

t I

TAPE

IRADLO OFF)

0SC

8+

s302.5

0504

loPR/BlTi

D5A2

fuR I t>L

IREV I

s50l

foril l<>l

4

'

590

ITAPE

8+I

rr, nrr

nec

I J

SECTION

2

cFs-950

Noi.: Follow

CASSETTE HOLDER

rhe di$ssemblv

procdure

REMOVAL

DISASSEMB

in the

.umeric.t order g s6.

LY

ft/

TELESCOPIC

ANTENNA

BEMOVAL

5

:FS-95()

BATTEBY FBONT

AND

CASE

PANEL

@RvrP3x16-,,\d\

LID

a-.

@avrP

BACK

3,1

PLATE

FEMOVAL

D

POINTER

AND

@BvrP

RACK

J

12

3t

SETTING

@RvfP3

L

t 12

12

I,

POINTER

Tum

1.

the

Set

).

Secure

l.

RACK

tunins

lointer

back

ulC

SEITING

knob

to

iack

tosether

llate

OBvrP3x

counterclockwtse

fulv

centei

the

vith

line

back

(See

!laie(s)

(lr<

16

fig

6

cFs-950

MECHANISM

REMOVAL

-!t

OBt

.

C.ution

on

I

rcatehbtiDg.

MAIN

8OARD.

DC

U"'r."re

ABvrP3x

to

IN JACK

BOAND

Otutt

AND HEADPHONE

@rt@votume

knobt

BOAED

REMOVAL

7-

cF5-950

LEAF

SII'ITCH

BOARO

REMOVAL

l

ireA

r

I

HEAD

CHANGE

SWITCH

qcot.r/phvback

@

BOARD

head

@@'he,

AND

RECOFD/PLAYBACK

**.

P-'

@n"P

HEAD

'@h@d

REMOVAL

chanse

,wi.ch

?,

b td

8

cFs-950

DETECTION

PULLEY

BELT REMOVAL

PfiwH2,6tB

e

Owtu1'2

6d.?ec.ion

putLy

b;k

cFs-950

sEcTtoN

ADJ

USTM

3

ENTS

MECHANICAL

L

Clean

the

alcohol-moistened

record/playback

Demasnetize

head

demagnetizer_ (Do

demagnetizer

3.

Do

not

use a

After

the adjustments.

compound

5.

The adjustments

mred

The ordergiven The adjustmerts L-CH

to

powei

adjustments

in this

and

R{H.

ADJUSTiT4ENTS

PRECAUTION

following

pa

s with

swab:

head pinch

rhe reco.d/playback

nor

close

to rhe

€rase

magnetized

parts

rh€

shor

supply

should service

should

scr€w.l.jver

apply

adjusted.

pe.formed

d b€

volrag€

be

manual_

peifo.me.l

be

unless

perforned

a denatured_

ioller

head

with

bring

the head

h€ad.)

for

suitable

tocking

with rhe

otherwis€

in the

for both

the

Hoad

Height

Adjusrment

I.

Prepare

a

ln recold

ju8t tape

an adjustmenr

mode

the

head

h€ights

twist

ponions

at

cassette

add vi€wing

ro

€timinate

of

a[ow.

as shown

fron

berow.

the front, tape curl

'l

ad_

and

Torqu€

REV REV

REW

Tape

Tension

REV

Measirem.nr

cQ-102C

cQ-l02R8

co201B

Mea3urement

cQ403A cQ403R

(0.39

(0.04

(more

(1.18

(nor€

28-52!.cm

0.72oz.irch)

-

28-52g.@

0,?2oz.inchj

0.0? o.incl)

-

thd

l.33oz.inch)

85

t45g.cn

-

2.01oz.inch)

-

thb

1.6?oz.irch)

a

q

.i

-10

3.2,

ELECTBICAL

ADJUSTIMENTS

Tap€

Sp€ed

t@r"

Adjustment

CASSETTE

Noro: Tlte adjustncnt

.

Switches and controls les otherwise

FUNCTION: VOLUME: TONE: HIGH

.

Slandard Input Level

.

Standfd

SECTION

in rhe

ordel The adjustmenis tor

bolh L{It ard R-CH.

sp€cified.

TAPE RADIO mechanical mid

Output Level

seflice

OFF

EXT MIC

100f)

peiformed

manuat.

perforned

0.775 V (0dBl

should be

given

in this

should be

should be set as follovs

0.?7nVG60dB)

PHONES

3.! a (-10d8)

V

0.25

3.2, A

ur-

Mode: FWD

tsp*d

.;t:'.i%1

Frequen.y and the end

(4s Also in REV

the above

"h*r--

Hz).

specification.

lhyback

OiCiral trsqu.rcy

difference

of the

tape should be within

playback

2,9251a

between

node,

confirm

counror

3,090H2

the besinning

1.5%

to ooram

Adjultmdt

Locrtion:

11