Sony WM-AF22 User manual

—-

Pa

Photo

:

WM—AF22

(See

page13)

Mode!

Name

Using

Similer

Mechanism

Tape

Transport

Mechanism

Type

Canadian

Model

WM-AF22

AEP

Model

UK

Model

E

Model

WM-BF22

US

Model

|

WM-AF28

AEP

Model

UK

Model

WM-BF28

WM-31/41

MF-WMAF

22-04

MF-WMBF22-04

SPECIFICATIONS

FM:

87.5

-

108

MHz

(Italian

model)

87.6

-

107

MHz

(West

German

model)

87.6

-

108

MHz

(Other

model)

AM:

526.5

-

1,606.5

kHz

(italian

model)

5§31-1,602

kHz

(West

German

model)

530

-

1,605

kHz

(Other

model)

40

-

15,000

Hz

For

E-model

5SmW

+5

mW

at

DC

operation

(at

10%

harmonic

distortion)

load

impedance

16ohms

For

other

countries:

10

mW+10mW

at

DC

operation

(at

10%

harmonic

distortion)

load

impedance

32

ohms

Frequency

range

Frequency

response

Power

output

Power

requirements

3v

0c

Two

R6

(size

AA)

batteries

Sony

rechargeable

battery

BP-700

DC

IN

3V

jack

accepts

Optional

Sony

AC-D2L

AC

power

adaptor

available

in

United

Kingdom

for

use

on

240V

AC,

50

Hz.

available

in

Canada

for

use

on

120V

AC,

60

Hz

available

in

other

countries

for

use

on

120V

AC,

60

Hz

or

220V

AC,

50

Hz

Battery

life

Approx.

8

hours

on

tape

playback

and

approx.

30

hours

on

FM

reception,

using

Sony

alkaline

batteries

AM3

(N).

Dimensions

WM-AF22/BF22:

Approx.

88

x

134

«31.5

mm

(w/h/d)

Other

models:

Approx.

88

x

134

«32.5

mm

(w/h/d)

not

incl.

projecting

parts

and

controls

WM-AF22/BF22:

Approx.

2259

Other

models:

Approx.

230g

incl.

batteries,

not

incl.

other

accessories

:

For

Canada

and

the

United

Kingdom:

Stereo

Headphones

'

Weight

Accessories

supplied

Their

defferences

are

shown

in

the

table

below.

WM-AF22

WM-BF22

WM-BF28

WN-AF

28

This

instruction

manual

covers

WM-AF22/BF22and

WM-AF

28

/BF

28.

Rechargeable

|

Battery

charger

(BC-700)

Headphones

Earphones

FM

sensitivity

selector

Stereo

headphones

For

United

Kingdom:

Stereo

headphones

For

other

countries:

Stereo

earphones

Ear

adaptors

DX/LOCAL

Optional

Supplied

Optional

FM

STIMONO

Stereo

headphones

DX/LOCAL

Optional

Accessories

—Note

lf

an

AC

power

adaptor

or

a

car

battery

cord

NiICROFILM

(Open-air

type,

1)

For

other

countries:

Stereo

earphones

(Open-air

type,

1)

Ear

adaptor

(2)

For

only

WM-AF28/BF

28:

Rechargeable

battery

(1)

Battery

charger

(1)

AC

power

adaptor

AC-D2L

Car

battery

cord

DCC-70

Battery

case

EBP-500B

Rechargeable

battery

BP-700

Battery

charger

BC-700

Stereo

active

speaker

system

SRS-30,

SRS-50

not

manufactured

by

Sony

is

used,

a

fuse

the

car

battery

cord

and

the

polarity

of

the

plug

must

be

as

illustrated.

Ya

ZB

JF

RADIO

CASSETTE

PLAYER

must

be

installed

in

the

AC

power

adaptor

or

a

pw

WM-AF22/AF28/BF22/BF28

Flexible

Circuit

Board

Repairing

@

Keep

the

temperature

of

the

soldering

iron

around

270°C

during

repairing.

®

Do

not

touch

the

soldering

iron

on

the

same

conduc-

tor

of

the

circuit

board

(within

3

times).

®

Be

careful

not

to

apply

force

on

the

conductor

when

soldering

or

unsoldering.

Notes

on

chip

component

replacement

@

Never

reuse

a

disconnected

chip

component.

®

Notice

that

the

minus

side

of

a

tantalum

capacitor

may

be

damaged

by

heat.

_

WM-AF22/AF28/BF22/BF28

SECTION1

|

DISASSEMBLY

AND

INSTALLATION

—

“41-1,

CASSET

HOLDER

ASSY

REMOVAL

1—3,

CASSET

HOLDER

ASSY

INSTALLATION

1)

Open

the

cassette

holder,

Note

:Follow

the

disassembly

procedure

the

numerical

2)

Move

the

left

latch

in

the

direction

of

the

arrow

order

given,

—@

to

release

it,

3)

Release

the

right

latch.

4)

Remove

the

cassette

up

spring.

1—2.

CABINET

(REAR)

ASSY

REMOVAL

i

Note

:Follow

the

disassembly

procedure

the

numerical

order

given.

1)

Insert

a

driver

(—)

in

to

the

portion

(3),

2)

Move

the

driver

in

the

direction

of

the

arrow

@).

3)

Release

the

claw

(%),

XO

xo

cabinet

(front)

WM-AF22/AF28/BF22/BF28

|

SECTION

2

—.

MECHANICAL

AND

ELECTRICAL

ADJUSTMENTS

MECHANICAL

ADJUSTMENTS

PRECAUTION

1,

Clean

the

following

parts

with

a

denatured—alcohol—

moistened

swab

:

playback

head

capstan

idlers

rubber

belts

3

2.

Demagnetize

the

playback

head

with

a

head

demagne—

pinch

roller

tizer,

3.

Do

not

use

a

magnetized

screwdriver

for

the

adjustments,

4,

After

the

adjustments,

apply

suitable

locking

compound

to

the

parts

adjusted,

5.

The

adjustments

should

be

performed

with

the

rated

|

power

supply

voltage

unless

otherwise

noted,

|

Torque

Measurement

(0.31—0,.6302

+

inch)

|

,

1—2.5g

>

cm

Tape

Tension

Measurement

c

CQ-403A

more

than

90g

(1.260z)

Fast

Forwand

55—

150g

-

cm

ELECTRICAL

ADJUSTMENTS

CASSETTE

SECTION

Playback

Head

Phase

Check

Note

:When

replacing

the

head,

check

the

both

L-ch

and

R-ch

phases,

|

7

Procedure

:

Phase

Check

Mode

:

playback

test

tape

:

P-4-A063

L-CH

(6.3kHz,

—10dB)

180

oscilloscope

fn

i

headphones

jack

(earphones)

Tape

Speed

Adjustment

Procedure

:

Mode

:

playback

speed

checker

or

test

tape

digital

frequency

WS-48A

counter

(3kHz,0dB)

headphones

jack

(earphones)

Specification

:

speed

checker

digital

frequency

counter

Frequency

difference

between

the

beginning

and

the

end

of

the

tape

should

be

within+2.5%

(+75%Hz).

Adjustment

Location

ELECTRICAL

ADJUSTMENTS

-|TUNER

SECTION

AM

rf

signal

generator

Put the

lead-wire

antenna

close

to

the

set.

30%

amplitude

ei

modulation

by

400Hz

signal

Output

lavel:

as

low

as

possible

=

FM

rf

signal

generator

22.5kHz

frequency

deviation

by

1kHz

signal

;

Output

level:

as

low

as

possible

FM

antenna

terminal

Note

:

For

adjustment

of

WM—BF22/BF28

BAND

SW

at

STEREO.

WM-AF22/AF28/BF22/BF28

headphones

jack

@Repeat

the

procedures

in

each

adjustment

several

times,

and

the

frequency

coverage

and

tracking

adjustments

should

be

finally

done

by

the

trimmer

capacitors.

(

):WG

model

:

f

):IT

model

FM

Frequency

Coverage

Adjustment

((.))

=

WG,

IT

model

Pointer

Adjustment

SG

jeaueney

position

part

86.0MHz

((87,.35MHz))

109.5MHz

(107.8MHz)

[108,25MHz]

‘f

minimum

maximum

FM

Tracking

Adjustment

frequency

86.

OMHz

maximum

(87,35MHz)

.

-

109.5MHz

(107.8MHz)

maximum

[108.25MHz]

os

Frequency

Coverage

Adjustment

pen

Adjustment

Reading

on

|

,

505kHZ

-

minimum

((51

6

'5kHz))

maximum

,

1,680kHz

meumum

((1,631.3kHz))

MW

Tracking

Adjustment

SG

and

set

frequency

maximum

MW

IF

Alignment

SG

and

set

frequency

455kHz

(468kHz)

a

maximum

(

):

UK

model

ADJUSTMENT

LOCATION

14

’

Jr

‘Gu

component

side

—

5h

—

WM-AF22/AF28/BF22/BF28

|

SECTION

3

DIAGRAMS

Note:

@

oO-——-:

parts

extracted

from

the

component

side.

Semiconductor

Location

@

e——

:

parts

extracted

from

the

conductor

side.

e

@

=:

parts

mounted

on

the

conductor

side.

@

|

&

indicates

side

identified

with

part

number.

e

®)

:

Through

hole.

@

5552

:

Pattern

of

the

rear

side.

|

@

[-]

:

Chip

components

extracted

from

the

rear

side

ISS123

XN1501

A

Ke

2

5

1

ila

3

2

XN6501

6

5

4

]

2

3

6

OK

2

4

SOK

3

—

TA8122AF

24

13

'

2

(Top

view)

re)

%

a,

eat

a

i

.

WM-AF22/AF28/BF22/

:

HP9O!

PB

HEAD

ae

ealcadiantenieadbenienioesedanl

—

i

1

i

|

oS

: :

yf

——

2)

¢)

oA

=

FERRITE-ROD

~

|

: :

.

Pore

WM-AF22/AF28

:

s

i

:

2

me

:

;

i.

:

Pt

°

;

ss

)

=

;

:

>

:

1

[sens

|

NORMAL

LOCAL

i

}

CrO2/METAL

px

$30I-1

WM-BF

22/BF

28

|

MONO

'

st

—

—_

—

aa

*

TSC

2

[3

|

ea

|

[wM-AF22/ar2e

|

22P

|

24P

|

lop

|

ww-

|__WG

|

27P|30P

|

10P

|

Hate

[1

T

|

27P|30Pp

|

13P

|

EAEP,

UR]

22P[24P

|

10P

|

cv3

:

.

L

Peewee

sy

'

t

1z

‘

1

iz

46

J302

PHONES

ORY

SATTERY

ERNIE

SES

SIZE°AA”

(EC

DESIGNATION

R6)

2PCsS.3V

‘

“RVBOL

cero

;

|

7

a

%

/

zs

ae

/

ne

a

| : |

|

RADIO/TAPE

ph

oe

rs,

TAPE

——>

RADIO

AM

<—

FM

.

{RADIO

OFF

}

|

fo.

’

Ly

®

5

‘

4

\

i

Bee

eae

'WM-AF22/AF28/BF22/BF28

=

WM-AF22/AF28/BF22/BF28

3

4

5

6

7

|

8

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9.

SS

10

i

Wee

fe

qa

43

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|

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te

th

we

ae

WN-BF

22/BF

28

|

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;

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st?

:

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a

te

Pe

yet

|

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<—FM

-

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'g

:

peek

oe

ie

|

[MAIN

BOARD)

AM

FERRITE-ROD

FM RF

FM

osc

AM

OSC

;

[MODE}s301-1—!

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pa

mS

coe

:

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'

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|

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|

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|

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TASI22AF

|

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|

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;

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FM/AM

FRONT

END,

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|

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IF

AMP,DET

...

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S

ede

(1

)

ue

=

mS

;

|

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|

ST

'

‘

DECODER

|

WM-~AF

PL

aree

|

nee

|

1

LOCAL®-DX

,

'

See:

|

1

CPi

‘

t,

(ele

eee

eles

sd

|

oe

B.P.

$303

Je

es

RADIO«—TAPE

IRADIO

OFF)

|

j

5303-2

$303-1

'

|

.

XN6SOL

|

#

EQ

SWITCH

7

|

5,

g

r

Q101,

Q201

:

5

S

ma

XNI5O1

fosclea

8

(2/0)

.

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XN6501

BUFFER

LA4570M

5

;

POWER

AMP

se

=

.

Loft

cH

ete

aa

ay

(Se

ea

a

Se

1

Lk

a

|

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a)

~)

Len

>

&

‘

a,

aie

Te

ee

eee

ae

i

ae

Ee

a

PHONES

j4

§

CIO

1000p

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Ss

8

i

15

5

=~

8

t

E

(13)

o

2

ad

HP901

im

foxcioe

B(!/2)

S

2

«$304

PB

HEAD

0

LA4570M

l_/\

power

PRE

AMP

16

colo

1000p

:

ay

8

Ren

=

:

=

oie.

8

M901

Lt

‘-

ca

—

}

8

W)

moToR

Xneso!

in

ahieiee

|

:

r

a

ae

2.2

6

J301

|

5

|

S57,

‘E

A

ears

|

.

a

tae

ie

a

|

Fe

iia

a

cee

sae

ce

ae

AIRE

8h

TOTAL

CURRENT

$301-2

:

SAGE.

305-56

TAPE

PLAY:

1

5mA

|

ayy

oar

3%

ia

REW;

1OSmA

|

cst

;

CrO2/MET

AL@-

NORMAL

“Ss

Te

a

eran

is

s

DRY

BATTERY

|

SIZE

"AA"

EC

DESIGNATION

R6)

7

—

>

-

—

-

—

-

—

-

2Pcs

3V.

pot:

3

.

eae

|

e

Total

current

is

measured

with

no

cassette

installed.

e

All

capacitors

are

in

wF

unless

otherwise

noted.

pF:

uwuF

©

Power

voltage

is

dc

3V

and

fed

with

requrated

de

power.

5OWV

or

less

are

not

indicated

except

for

electrolytics

©

supply

from

external

power

voltage

jack.

and

tantalums.

WM-

a

eh

LOCAL

/

DX

.

A:

internal

component.

WM-BF22/BF28

Anais

@

Voltage

and

waveforms

are

de

with

respect

to

ground

@

wt:

printed

resistor.

§301-2

|

;

|

taPE

under

no-signa!

(detuned)

conditions.

-

no

mark:

PLAY

7

$302

BAND

sone

(

):

FM

$303

FUNCTION

TAPE

©

<<

7:

AM

cate

OWER

Voltage

variations

may

be

noted

due

to

normal.

produc-

tion

tolerances.

|

®

,

;

e

Signal

path.

|

e

[7]:

adjustment

for

repair.

4

a

>

FM

>>

:PB(DECKA)

14

NOTE:

The

mechanical

parts

with

no

reference

number

in

the

exploded

views

are

not

supplied.

‘The

construction.

parts

of

an

assembled

Part

are

indicated

with

a

collation

num-

ber

in

the

remark

column.

Items

marked

“*"

are

not

stocked

since

they

.are

seldom

required

for

routine

service.

Some

delay

should

be

antici-

pated

when

ordering

these

items.

(1)

RXEX

P

SES

SECTION

4

EXPLODED

VIEW

_

Due

to

standardization,

parts

with

part

number

suffix

-XX

and

-X

may

be

dif-

ferent

from

the

parts

specified

in

the

components

used

on

the

set.

Color

Indication

of

Appearance

Parts

Example:

(RED)...

KNOB,

BALANCE

(WHITE)

7.

T

Cabinet’s

Color

-

Parts’

‘Color.

y

b

\:

/

\

.

WM

-AF22/AF28/BF22/BF28

The

components

identified

by

mark

or

dotted

line

with

mark

are

critical

for

safety.

epiace

only

with

part

number

specified.

Les

composants

identifiés

par

une

marque

sont

critiques

pour

la

sécurité.

.

Ne

ies

remplacer

que

par

une

piece

portant

le

numéro

spécifé.

~WM-AF22/AF28/BF22/BF28

Ref.No

Part

No.

NON

BD DD

DODDS

DD Fe

Ft

ot

et

et et

et

pe

SESE

SSR

OD

OUND

ENMOWOMU

DP

ONAMNEwWNe

3-346-518-01

3-346-522-01

X-3346-503-1

X-3346-505-1

3-335-604-01

3-346-527-01

3-346-539-01

3-346~-526-01

3-346-528-01

3-346-513-0601

3-346-514-01

3-346-515-01

3-346-512-01

—3-346-512-11

3-346-513-11

3-346-514-11

3-346-515-11

3-335-605-01

3-346-502-01

3-343-358-01

3-346-538-01

3-346-503-01

3-346-504-01

3~346-525-01

3-346-508-01

3-346-508-11

3-346-508-21

—

3-346-508-31

3-346-721-01

3-346-721-11

3-346-721-21

3~346-721-31

Description

—

Remark

CLIP,

BELT

PLATE,

LOCK

GEAR

ASSY,

MIDWAY

WHEEL

ASSY,

CAPSTAN

BELT,

MIDWAY

LEVER

(REW)

SPRING

(FR)

LEVER

(FF)

LEVER

(STOP)

(WM-AF22/BF22)....BUTTON

(FF)

(WM-AF22/BF22)....

BUTTON

(REW)

(WM-AF22/BF22)....BUTTON

(STOP)

(WM-AF22/BF22)....

BUTTON

(PLAY)

(WM-AF28/BF28)....

BUTTON

(PLAY)

(WM-AF28/BF28)....BUTTON

(FF).

(WM-AF28/BF28)....

BUTTON

(REW)

(WM-AF28/BF28)....BUTTON

(STOP)

SPRING,

COMPRESSION

KNOB

(TU)

RING,

RETAINING

SPRING

(GROUND)

-

POINTER

COVER,

KNOB

GEAR

(S

REEL)

(WM-~AF22

:

BLK)....CABINET

(FRONT)

(CF-A)

(WM-AF22

:

GRY)....CABINET

(FRONT)

(CF-A)

(WM-BF22

:

BLK)....CABINET

(FRONT)

(CF-A)

(WM~BF22

:

GRY)....CABINET

(FRONT)

(CFA)

(WM-AF28

:

BLK)....CABINET

(FRONT)

(WM-AF28

:

GRY)....CABINET

(FRONT)

(WM-BF28

:

BLK

:

AEP,

IT,

UK)....

CABINET

(FRONT)

(WM-BF28

:

GRY

:

AEP,

IT,

UK)....CABINET

(FRONT)

Ref.No

Part

No.

21

22

23

24

25

26

27

28

29

30.

31

32,

“33

34

35

36.

36

901

HPS01

ul

3-346-721-41

3-346-721-51

3-346-517-01

3~346-517-11

3-346-5)7-21

3-346-517-31

3-346-509-01

X-3346-502-1

X-3334-005-1

X-3346-504-1

3-346-516-01

3-335-608-01

3-334-089-01.

3-346~-523-01

3-335-652-01

X~3346-501-1

3-334-412-01

3-334-057-01

3~346-506-01

3-346-506-11

3-346-506-21

3-346-506-31

X-3346-541-1

X-3346-542~1

X~3346-543-1.

A~-3060-103-A

A~-3108-292-A

1-402-361-11

Description

Remark

(WM-BF28

:

BLK

:

WG)....

CABINET

(FRONT)

(WM-BF28

:

GRY

:

WG)....

CABINET

(FRONT)

LID,

BATTERY

CASE

(BLK)

7

LID,

BATTERY

CASE

(WHT)

LID,BATTERY

CASE

(RED)

LID,

BATTERY

CASE

(BLU)

SPRING

|

TABLE

ASSY,

T

REEL

PINCH

ROLLER

ASSY

GEAR

ASSY,

PLAY

SPRING

GEAR,

FF

LEVER

(SHUT-OFF)

CUSHION

(C),

MOTOR

BASE

ASSY,

GUIDE

BELT,

CAPSTAN

TERMINAL

BOARD,

RELAY

CABINET

(REAR)

(CF~C)

(BLK)

(WM~AF22/BF22

:

WHT)....CABINET

(REAR)

(CF-C)

(WM-AF22/BF22

:

RED)....CABINET

(REAR)

(CF-C)

(WM-AF22/BF22

:

BLU)....CABINET

(REAR)

(CF-C)

(WM-BF28

:

AEP,

IT,

UK)....(fMAX—-108MHz)

,

HOLDER

(CF-B)

ASSY,

CASSETTE

(WM-BF28

:

WG)...

.(fMAX—107MHz)

HOLDER

(CF-B)

ASSY,

CASSETTE

:

(WM~AF28)....

HOLDER

(CF-B)

ASSY,

CASSETTE

(WM-AF22/AF28)....

MOUNTED

PCB,

MAIN

PC

BOARD

ASSY,

HEAD

ANTENNA,

FERRITE-ROD

(MW):

Sony WM-AF22 User manual

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