Sony ST-S222ES User manual

“oogonia

een

ai

Er

MSE

RNEASY

O

MEAHSTRHAHNON

sa

ESE

REEDS

TRESS

ULNAR

MOISE

HH

SPECIFICATIONS

FM

tuner

section

Tuning

range.

87.5

MHz

—

108

MHz

Antenna

terminals

75

ohms,

unbalanced

Intermediate

frequency

__

10.7

MHz

ie

cece

ee

ete

To

oe

|

(at

40

kHz\

|

\devia:

tion

/

|

Sensitivity

|

at

46

dB

quieting

|

17.3

dBf,

2

uV

|

(mono)

|

37.9

dBf,

22.5

pV

|

(stereo)

|

Usable

sensitivity

|

10.3:

dBf,

0.9

uV

|

(IHE)

|

o

i

(S/N

=

26

dB)

a

|

Signal-to-noise

ratio

|

83

dB

inno)

|

79

dB

(stereo)

|

Harmonic

distortion

|

0.01%

iene)

|

at

1kHz

|

0.03%

(stereo)

|

[oem

ccaeccnee

Pema

ee

cee

ic

ri

einielaavaotae

soins

ans

Scan

7

sue

aor

|

IM

distortion

0.01%

(mono)

|

0.03%

(stereo)

|

be

Ee

he

ee

aE

Pe

aN

ES

ene

bl

ele

SGPC

RAM

RE

|

Separation

at

1kHz

|

os.

de

|

——

a

Frequency

response)

40

Hz

-

12

5

kHz

$2

a

.2dB

|

30

Hz

-

15kHz

+§-ed

eee

es

eee

ee

Selectivity

|

at

400

kHz

iat

300

KHz

_

6048

|

25

dB

|

i

el

cE

Cessna

aR

ERSIRRE

NO

MENS

SACHEM

MICROFILM

Capture

ratio

1.0dB

AM

suppression

ratio

65

dB

image

response

ratio

60

dB

iF

response

ratio

120

dB

Spurious

response

ratio

100

dB

RF

intermodulation

65

dB

(IHF),

80.

dB

(2.4

MHz)

Muting

threshoid

Approx.

30

dBf,

18

uV

Output

level/impedance

at

75

KHz

deviation

750

mV,.1:7

kilohms

—

Continued

on

—

SAFETY-RELATED

COMPONENT

WARNENG!!

COMPONENTS

IDENTIFIED

BY

SHADING

AND

MARK

A

ON

THE

SCHEMATIC

DIAGRAMS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

TO

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

oe

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUBLISHED

BY

SONY.

$T-$222ES

AM

(MWILW)

tuner

section

General

System

PLL

quartz-locked

digital

synthesizer

system

FM

stereo,

FM/AM

super-heterodyne

tuner

Power

requirements

AEP

mode:

220

V

ac

(or

240

V

ac

adjustable

by

authorized

Sony

personnel),

50/60

Hz

UK

model:

240

V

ac

(or

220

V

ac

adjustable

by

authorized

Sony

personnel),

50

Hz

Power

consumption

12

watts

Dimensions

Approx.

430

x

80

x

340

mm

(w/hi/d)

(17

x

33/4

x

107/s

inches)

including

projecting

parts

and

controls

Weight

Approx.

4.2

kg

(9

Ibs

4

02)

Accessories

supplied

Ribbon

antenna

(1)

Connecting

cord

(1)

Layout-free

AM

antenna

(1)

Station

label

(1

set)

Antenna

connector

(1)

531

-—

1602

kHz

153

-

344

kHz

(9

KHz

step)

530

-

1610

kHz

(10

kHz

step)

Layout-free

AM

antenna

External

antenna

terminal

Tuning

range

Intermediate

frequency

Layout-

300

pV/m

700

pV/m

free

AM

(at

999

or

(at

230

kHz)

antenna

1,000

kHz)

450

kHz

Usable

sensi-

tivity

External

antenna

30

pV

(at

999

or

1,000

kHz)

Signal-to-noise

ratio

50

dB

(50

mV/m)

0.5%

(at

60

mV,

400

He

Selectivity

40

dB

(9

kHz)

40

dB

(9

kHz)

45

dB

(10

kHz)

200

pV

(at

230

kHz)

—

MODEL

IDENTIFICATION

—

(Specification

Label

)

SON

Y:

MODEL

NO,

ST-S222ES

FM

STEREO/FM-AM

TUNER

MLL

AEP

model:

AC

220V~

50/60Hz

12W

UK

model:

AC

240V~

50/60Hz

i12W

FUNCTION

OF

CONTROLS

jm

POWER

Y¥@

TUNING

K®

TUNING

MODE

4

MUTING/MODE

S$T-S222ES

‘®

MEMORY

jm

MEMORY

SCAN

@

POWER

switch

Depress

to

turn

on

the

power.

To

turn

the

power

off,

press

the

switch

again.

©

TUNING

button

Press

the

left

side

(—)

to

go

to

a

lower

frequency

and

the

right

side

(+)

to

go

to

a

higher.

During

automatic

tuning:

Press

to

start

automatic

frequency

scanning.

The

frequencies

below

or

above

that

shown

on

the

display

window

will

be

scanned

automatically

until

a

signal

is

received.

To

resume

scanning,

press

the

button

again.

During

manual

tuning:

Keep

pressed

to

change

the

frequency

continuously

until

the

desired

frequen-

cy

is

received.

The

frequency

figures

will

change

rapidly.

Successively

press

and

immediately

release

the

button

to

change

the

frequency

slowly.

©

TUNING

MODE

button

Select

a

tuning

system

—

MANUAL

or

AUTO.

The

selected

tuning

system

will

be

indicated

in

the

display

window.

©

Band

selector

Selects

the

desired

band:

FM

or

MW,

LW.

The

selected

band

will

be

indicated

in

the

display

window.

@

MUTING/MODE

button

This

button

serves

the

dual

purpose

of

an

FM

mode

and

FM

muting

switch.

Normally

press

this

button

so

that

the

MUTING

indicator

illuminates

to

eliminate

FM

interstation

noise

while

tuning

from

station

to

station.

To

tune

in

very

weak

FM

station,

press

this

button

again

so

that

MUTING

indicator

goes

off.

FM

station

is

received

in

monaural

mode.

@

MEMORY

button

Press

to

operate

memory

circuit.

The

MEMORY

in-

dicator

will

appear

in

the

display

window

for

a

few

seconds

indicating

that

the

memory

circuit

is

stan-

ding

by.

@

MEMORY

SCAN

button

Press

to

automatically

scan

the

stations

memorized

on

the

station

preset

buttons.

©

Station

preset

buttons

and

station

identification

windows

To

call

up

a

memorized

station,

press

the

appropriate

button.

Station

labels

(supplied)

can

be

placed

in

these

windows.

$T-S222ES

©

Tuning

mode

indicators

The

tuning

system

selected

by

the

TUNING

MODE

button

is

displayed.

@

STEREO

indicator

This

indicator

will

light

when

an

FM

stereo

program

of

sufficient

signal

strength

is

tuned

in

with

the

MUTING/MODE

button

pressed.

@

MEMORY

indicator

When

the

MEMORY

button

is

pressed,

the

MEMORY

indicator

will

appear

for

a

few

seconds

indicating

that

the

memory

circuit

is

standing

by.

®

TUNED

indicator

This

indicator

illuminates

when

a

sufficiently

strong

signal

is

tuned

in.

®

MUTING

indicator

This

indicator

illuminates

when

the

MUTING/MODE

button

is

pressed

in

FM

reception.

@®

Station

preset

button

indicator

When

the

station

preset

button

is

pressed,

a

figure

from

1

to

10

corresponding

to

the

pressed

button

will

appear.

®

Band/frequency-display

Permits

reading

the

received

frequency

at

a

glance

from

the

figures.

1-1.

BLOCK

DIAGRAM

AEP

,UK

MODEL

AM

L70!

:

ST-$222ES

SECTION

1

OUTLINE

_]

L102

IFTIOI

FM

Ie

RTI04

FM

TRACKING

DISTORTION

ADJ

'

FM

MIX

AMP

t

CFI0I

FM

IF

AMP

CFIO2

FM

IF

AMP

Q105

|

1

Q106,107

£

Q108,

109

|

el

=

ee

ay

a8

LI05

©

C162

MONO

DIST

CORRECT

BUFFER

Qil2

Q104

FM

OSC

Q103

B+

(30V)

0204

YA

205

¢3

T301_—;

T303

D203

LW

D302-A

LW

OSC

STEREO

ANT

LW

ON/OFF

4

ie

SWITCH

0305

;

7304

MW

OSC

L301

Hs

MW

ON/OFF

|

SWITCH

0304

0000000009000

0

MW

joe

AUG

0302,303

PLL

LPF

Q40!,402

H

or

4

PLL

REF

FREQ

6)

9501

46

(16)

PLL

3

IC90!

FM/AM

SELECTOR

Q405

FM/AM

SWITCH

0406

RTIOI

RTIO2

Z

FM

MUTING

ADJ

CONTROLLER

5

1C50I

B+

(5.6V)

24

D501

ty

Ll

@®

8

|

D510

2)

LATCH

|

—

22,54

—

60)

—~60)—~G)

i

1C502

O

X50!

7.2MHz

S511

$50!

$502

$503

$504

$505

MU

TING/MODE

$514

S516

foie)

2a

[4]

5]

2

[—]

v5

$509

$5i0

$513

$515

S5I7

FM

MW/LW

MERORY

SCAN

$506

S507

$508

Ce}

C7)

Ce)

(2) [9]

FM

IF

AMP

ihe

es

PLL

DET

QO

C102

D108

ST-$222ES

B+

PLL

DET

IC103

(1/2)

‘

IFTIOS

FM

NULL

PLL

DET

Qu!

CNJ70OI

2)

6)

Steen

RT20I

SEPARATION

AM

AUTO

STOP

ADJ

POWER

ON

MUTING

Q60!

REGULATOR

IC60)

MUTING

Q201

,202

4)

(5)

ADJ

0203

D603

B+

REGULATOR

(45V)

0603

PT7OI

$70!

POWER

D605

TRANSHGRMER

LOWER]

O00

9

POWER

OFF

MUTING

Q602

CNP7OI

-AEP

MODEL

D603

D607

“—

UK

MODEL

$T-$222ES

SECTION

2

DISASSEMBLY

TOP

COVER

REMOVAL

Remove

four

top

cover

screws.

FRONT

PANEL

REMOVAL

Remove

six

screws

securing

front

panel.

Note:

Follow

the

disassembly

procedure

in

the

numerical

order

given.

TUNER

BOARD,

PRESET

BOARD

(A/B),

LED

BOARD

PC

board

support

ri

*

Remove

tuner

board

while

2

pushing

pawl

in

the

direction

of

arrow.

QO

BVTT3x6

@

BVTT3x6

OQ

BVTT3x6

tuner

board

preset

(A)

board

ST-$222ES

SECTION

3

ADJUSTMENTS

FM

SECTION

FM

TRACKING

ADJUSTMENT

FM

FREQUENCY

COVERAGE

ADJUSTMENT

FM

rf

Signal

generator

FM

rf

signal

generator

OUTPUT

FM

ANTENNA

terminal

(7§Q)

1.

Adjust

for

a

maximum

reading

on

VTVM.

frequency

adjustment

VOM

indication

part

reading

87.5MHz

L101,

L102

maximum

108.0MHz

CT101,

CT102

maximum

87.5MHz

|

2.1

+0.3V

L103

108.0MHz

|

8.0+0.3V

CT103

frequency

|

reading

on

|

adjustment

indication

VOM

part

VTVM

(de

range)

TP

104

test

point

STANDARD

SIGNALS

FOR

ADJUSTMENT:

FM

rf

Stereo

Signal

Carrier

frequency:

98MHz

Modulation:

Audio

400Hz

16.25kHz

deviation

(40%)

Subchannel

16.25kHz

deviation

(40%)

Pilot

19kHz

7.5kHz

deviation

(19%)

FM

rf

Monaural

Signal

Carrier

frequency:

98MHz

Modulation:

400Hz,

40kHz

deviation

(100%)

Discriminator

Adjustment

@

Procedure:

FM

stereo

rf

VOM

signal

generator

(dc

range)

i

oo

Output

level:

10mV

(80dB)

FM

ANTENNA

terminal

(75Q)

A)

BALANCE

VOM

(dc

range)

LPF101

TP102

D

|

rer08

test

point

test

point

1.

Turn

FM

rf

signal

generator

off.

2.

Short

TP103.

3.

Adjust

RT103

so

that

VOM

reads

0

+50mV.

RT103

TP102

TP103

B)

Primary

Side

(NULL)

@®

Procedure:

VOM

(dc

range)

Carrier

frequency:

Q98MHz

Modulation:

1kHz

Output

level:

10mV

(80dB)

test

point

Note:

Repeat

primary

and

secondary

adjustments

two

or

three

times.

1.

Detune

the

set

by

pushing

the

TUNING

(+,

—)

button.

Turn

the

core

(primary

side:

Black)

of

IFT105

for

OV

reading

on

VOM.

IFT

105

ST-$222ES

C)

Secondary

Side

(DISTORTION)

@

Procedure:

IF

BAND:

WIDE

MODE:

MONO/STEREO

FM

stereo

rf

distortion

signal

generator

meter

Output

level:

10mV

(80dB)

FM

ANTENNA

OUTPUT

terminal

(75Q)

1.

With

MONO

signal

Adjust

CT104

so

that

distortion

meter

reading

becomes

minimum

(0.06%

or

less).

Note:

Make

sure

null

point

after

making

this

adjustment.

2.

With

STEREO

signal

(for

confirming

STEREO

lamp

lighting)

Adjust

RT104

so

that

distortion

meter

reading

becomes

minimum

(0.09%

or

less).

Note:

If

specification

is

not

met,

turn

IFT101

within

range

of

+90

(turn

after

making

mark

with

marker-pen

or

equivalent).

mark

RT104

/FT101

IFT101

Muting

Width

Adjustment

@

Setting:

MUTING/MODE

switch:

ON

@

Procedure:

FM

rf

signal

generator

Carrier

frequency:

98MHz

Output

level:

10mV

(80dB)

OUTPUT

FM

ANTENNA

terminal

(752)

.

Tune

in

98MHz

by

pressing

TUNING

(+,

—)

switches.

.

Adjust

IFT103

so

that

MUTING

lamp

goes

on.

.

Confirm

that

MUTING

lamp

goes

on

within

receiving

frequency

of

57

—

65kHz.

Note:

Wait

for

about

two

minutes

after

turning

the

set

on.

FM

Muting

Level

Adjustment

e

Setting:

IF

BAND:

WIDE

@

Procedure:

FM

rf

signal

generator

oscilloscope

Carrier

frequency:

98MHz

FM

ANTENNA

terminal

OUTPUT

(752)

1.

MODE:

MUTING

ON

2.

Tune

in

98MHz

by

pressing

TUNING

(+,

—)

switches.

3.

Adjust

RT102

so

that

muting

level

becomes

24

t3dB.

RT102

FM

Stereo

Separation

Adjustment

@

Procedure:

FM

stereo

rf

signal

generator

VTVM

FM

antenna

OUTPUT

terminal

(75Q)

Carrier

frequency:

Q98MHz

Output

level:

10mV

(80dB)

Modulation:

Audio

(1kHz):

16.25kHz

deviation

(40.6%)

Pilot

(19kHz):

7.5kHz

deviation

(18.8%)

Sub-channel

(38kHz):

16.25kHz

deviation

(40.6%)

FM

stereo

signal

generator

output

channel

VTVM

connection

reading

(dB)

Adjust

RT201

for

minimum

reading.

Adjust

RT201

for

minimum

L-CH

Stereo

separation:

@)

—

®)

R-CH

Stereo

separation:

©

-

@®

The

separations

of

both

channels

should

be

equal.

IFT

103

RT201

VTVM

L

re

ee

[

ser

|

OUTPUT

TENNA

terminal

TUNING

(+,

—)

NG

lamp

goes

on.

»

goes

on

within

(Hz.

fter

turning

the

set

on.

oscilloscope

,

l=]

VQ"

[

ser

|

inal

OUTPUT

752)

ing

TUNING

(+,

—)

1uting

level

becomes

FM

Stereo

Separation

Adjustment

@

Procedure:

FM

stereo

rf

signal

generator

VTVM

FM

antenna

OUTPUT

terminal

(75Q)

Carrier

frequency:

98MHz

Output

level:

10mV

(80dB)

Modulation:

Audio

(1kHz):

16.25kHz

deviation

(40.6%)

Pilot

(19kHz):

7.5kHz

deviation

(18.8%)

Sub-channel

(38kHz):

16.25kHz

deviation

(40.6%)

FM

stereo

signal

generator

output

channel

VTVM

connection

reading

(dB)

Adjust

RT201

for

minimum

reading.

Adjust

RT201

for

minimum

L-CH

Stereo

separation:

@)

=

®)

R-CH

Stereo

separation:

©

a

©

The

separations

of

both

channels

should

be

equal.

IFT103

RT207

RT102

MW/LW

SECTION

@

Setting:

BAND

SELECTOR

switch:

MW/LW

AM

rf

signal

generator

Put

the

lead-wire

we

antenna

close

to

the

set.

30%

amplitude

modulation

by

400

Hz

signal

MW/LW

TUNED

Level

Adjustment

@

Procedure:

loop

antenna

AM

rf

signal

generator

ferrite-rod

antenna

Carrier

frequency:

999kHz

(MW)

235kHz

(LW)

30%

amplitude

modulation

by

400H2

signal.

Adjust

RT101

so

that

TUNED

indicator

goes

on

with

signal

strength

of

58dB/m.

Confirm

that

TUNED

indicator

goes

on

with

signal

strength

of

76dB/m.

indication

VOM

part

$T-$222ES

Layout-free

AM

antenna

OUTPUT

Repeat

the

procedures

in

each

adjustment

several

times,

and

the

frequency

coverage

and

tracking

adjustments

should

be

finally

done

by

the

trimmer

capacitors.

MW

TRACKING

ADJUSTMENT

Adjust

for

a

maximum

reading

on

VTVM,

1,404kHz

603kHz

CT302

T302

RT101

.

ee

wee

“Sac

LW

TRACKING

ADJUSTMENT

Adjust

for

a

maximum

reading

on

VITVM.

310kHz

170kHz

CT301

T301

T3017

indication

VOM

part

ST-S222ES

SECTION

4

4-1.

MOUNTING

DIAGRAM

DIAGRAMS

—

Conductor

Side

—

@

Semiconductor

Lead

Layouts

t

2

3

=

o

6

u

|

8

9

=

Li.

le

[FM

INPUT

|

(CHASSIS)

(COTS

1$S202-1

GL-5NG6

LA5665

2SK241-Y

are

wee

See

BOARD]

ue

)

—_———

cathode

GL-5PR21

A

AM

FM

106,108

=

-

|coAXAL

112,107,109,

IC102

=

wore

4

V

W

i

BLK

long

short

CNJ

701

K

WHT

bs

anode

os

=

-

cathode

anode

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ne

10E2

-

NJM4560D

id

On

ZOU

301,302,303

28K

125-3

cathode

8765

2SK246-GR2

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lol

iciol

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Ec

.

IC103

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+ht

i

(Top

view)

anode

say

C

TC9172P

2SA1175

302B

,

301B

HZ30-2L

TC9174P

fils

16151413121110

9

2SC710-13

ee

401,107,

106

A

HZ7A3L

[OUTPUT

BOARD)

603,

C60

123458678

cathode

Saas

306,305,304,

202

/

-

LA1265

aie

a

LA3400

anode

;

2

28C535

602,60!

KV1226

a)

E

IC20I

{Top

view)

on

ec,

103,102,

403

516

515

05,593,

anode

2

“PC1163H

\e)

snoae

10008

|

2SC634SP

.

10502

penne,

Cae

oe

(STEREO

INDICATOR

BOARD)

9

KV

1320

F

521,516,534

=T.

(CHASSIS)

X

i

405,406,501

.

OP

bias

:

=

-

G

MC931

pt,

Marking

side

view

3

=

more

"

501,503,505

507

e

Color

code

of

sleeving

over

the

end

of

the

jacket.

508.504

506508

12

3

:

509,510

O——

:

parts

extracted

from

the

component

side.

S51

r-

|

t

:

indicates

side

identified

with

part

number.

aaapes

=

signal

path

ameasap

©

|

-CH

signal

path

amos

=

R-CH

signal

path

e

22

%.:

B+

pattern

——

2—

—

|

3—

ST-S222ES

ST-$222ES

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

(CHASSIS)

(COTS

[TUNER

BOARD)

BLK

0.9

0

1,2

0

0.9

0.51

7

5

:

5

5 5

5

a)

5

PT

70l

POWER

TRANSFORMER

UK

MODEL

AEP

MODEL

(AC

SWITCH

BOARD]

|

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salad

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1

2 3

4

°5

AUTO

MANUAL

SIGNAL

Ss

ee

wow

EP

CD

kHe

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FM

LA

ee

MHz

bowtie

SSI!

MUTING

/

MODE

LCDSO!

LIQUID

CRYSTAL

DISPLAY

pe

14

Sony ST-S222ES User manual

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