Sony ST-S222ES Manual de usuario

“oogonia

een

MSE

RNEASY

MEAHSTRHAHNON

ESE

REEDS

TRESS

ULNAR

MOISE

SPECIFICATIONS

tuner

section

Tuning

range.

87.5

MHz

—

108

MHz

Antenna

terminals

ohms,

unbalanced

Intermediate

frequency

10.7

MHz

cece

ete

(at

kHz\

\devia:

tion

Sensitivity

quieting

17.3

dBf,

(mono)

37.9

dBf,

22.5

(stereo)

Usable

sensitivity

10.3:

dBf,

0.9

(IHE)

(S/N

dB)

Signal-to-noise

ratio

inno)

(stereo)

Harmonic

distortion

0.01%

iene)

1kHz

0.03%

(stereo)

[oem

ccaeccnee

Pema

cee

einielaavaotae

soins

ans

Scan

sue

aor

distortion

0.01%

(mono)

0.03%

(stereo)

ene

ele

SGPC

RAM

Separation

1kHz

os.

——

Frequency

response)

kHz

.2dB

15kHz

+§-ed

eee

Selectivity

400

kHz

iat

300

KHz

6048

Cessna

ERSIRRE

MENS

SACHEM

MICROFILM

Capture

ratio

1.0dB

suppression

ratio

image

response

ratio

response

ratio

120

Spurious

response

ratio

100

intermodulation

(IHF),

80.

(2.4

MHz)

Muting

threshoid

Approx.

dBf,

Output

level/impedance

KHz

deviation

750

mV,.1:7

kilohms

—

Continued

page

—

SAFETY-RELATED

COMPONENT

WARNENG!!

COMPONENTS

IDENTIFIED

SHADING

AND

MARK

THE

SCHEMATIC

DIAGRAMS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUBLISHED

SONY.

$T-$222ES

(MWILW)

tuner

section

General

System

PLL

quartz-locked

digital

synthesizer

system

stereo,

FM/AM

super-heterodyne

tuner

Power

requirements

AEP

mode:

220

(or

240

adjustable

authorized

Sony

personnel),

50/60

model:

240

(or

220

adjustable

authorized

Sony

personnel),

Power

consumption

watts

Dimensions

Approx.

430

340

(w/hi/d)

(17

33/4

107/s

inches)

including

projecting

parts

and

controls

Weight

Approx.

4.2

Ibs

02)

Accessories

supplied

Ribbon

antenna

(1)

Connecting

cord

(1)

Layout-free

antenna

(1)

Station

label

set)

Antenna

connector

(1)

531

-—

1602

kHz

153

344

kHz

KHz

step)

530

1610

kHz

(10

kHz

step)

Layout-free

antenna

External

antenna

terminal

Tuning

range

Intermediate

frequency

Layout-

300

pV/m

700

pV/m

free

(at

999

(at

230

kHz)

antenna

1,000

kHz)

450

kHz

Usable

sensi-

tivity

External

antenna

(at

999

1,000

kHz)

Signal-to-noise

ratio

(50

mV/m)

0.5%

(at

mV,

400

Selectivity

kHz)

(10

kHz)

200

(at

230

kHz)

—

MODEL

IDENTIFICATION

—

(Specification

Label

)

SON

MODEL

NO,

ST-S222ES

STEREO/FM-AM

TUNER

MLL

AEP

model:

220V~

50/60Hz

12W

model:

240V~

50/60Hz

i12W

FUNCTION

CONTROLS

POWER

Y¥@

TUNING

K®

TUNING

MODE

MUTING/MODE

S$T-S222ES

‘®

MEMORY

SCAN

POWER

switch

Depress

turn

the

power.

turn

the

power

off,

press

the

switch

again.

TUNING

button

Press

the

left

side

(—)

lower

frequency

and

the

right

side

(+)

higher.

During

automatic

tuning:

Press

start

automatic

frequency

scanning.

The

frequencies

below

above

that

shown

the

display

window

will

scanned

automatically

until

signal

received.

resume

scanning,

press

the

button

again.

During

manual

tuning:

Keep

pressed

change

the

frequency

continuously

until

the

desired

frequen-

received.

The

frequency

figures

will

change

rapidly.

Successively

press

and

immediately

release

the

button

change

the

frequency

slowly.

TUNING

MODE

button

Select

tuning

system

—

MANUAL

AUTO.

The

selected

tuning

system

will

indicated

the

display

window.

Band

selector

Selects

the

desired

band:

MW,

LW.

The

selected

band

will

indicated

the

display

window.

MUTING/MODE

button

This

button

serves

the

dual

purpose

mode

and

muting

switch.

Normally

press

this

button

that

the

MUTING

indicator

illuminates

eliminate

interstation

noise

while

tuning

from

station

station.

tune

very

weak

station,

press

this

button

again

that

MUTING

indicator

goes

off.

station

received

monaural

mode.

MEMORY

button

Press

operate

memory

circuit.

The

MEMORY

in-

dicator

will

appear

the

display

window

for

few

seconds

indicating

that

the

memory

circuit

stan-

ding

by.

MEMORY

SCAN

button

Press

automatically

scan

the

stations

memorized

the

station

preset

buttons.

Station

preset

buttons

and

station

identification

windows

call

memorized

station,

press

the

appropriate

button.

Station

labels

(supplied)

can

placed

these

windows.

$T-S222ES

Tuning

mode

indicators

The

tuning

system

selected

the

TUNING

MODE

button

displayed.

STEREO

indicator

This

indicator

will

light

when

stereo

program

sufficient

signal

strength

tuned

with

the

MUTING/MODE

button

pressed.

MEMORY

indicator

When

the

MEMORY

button

pressed,

the

MEMORY

indicator

will

appear

for

few

seconds

indicating

that

the

memory

circuit

standing

by.

TUNED

indicator

This

indicator

illuminates

when

sufficiently

strong

signal

tuned

in.

MUTING

indicator

This

indicator

illuminates

when

the

MUTING/MODE

button

pressed

reception.

@®

Station

preset

button

indicator

When

the

station

preset

button

pressed,

figure

from

corresponding

the

pressed

button

will

appear.

Band/frequency-display

Permits

reading

the

received

frequency

glance

from

the

figures.

1-1.

BLOCK

DIAGRAM

AEP

,UK

MODEL

L70!

ST-$222ES

SECTION

OUTLINE

L102

IFTIOI

RTI04

TRACKING

DISTORTION

ADJ

MIX

AMP

CFI0I

AMP

CFIO2

AMP

Q105

Q106,107

Q108,

109

LI05

C162

MONO

DIST

CORRECT

BUFFER

Qil2

Q104

OSC

Q103

B+

(30V)

0204

205

¢3

T301_—;

T303

D203

D302-A

OSC

STEREO

ANT

ON/OFF

SWITCH

0305

;

7304

OSC

L301

ON/OFF

SWITCH

0304

0000000009000

joe

AUG

0302,303

PLL

LPF

Q40!,402

PLL

REF

FREQ

9501

(16)

PLL

IC90!

FM/AM

SELECTOR

Q405

FM/AM

SWITCH

0406

RTIOI

RTIO2

MUTING

ADJ

CONTROLLER

1C50I

B+

(5.6V)

D501

@®

D510

LATCH

—

22,54

—

60)

—~60)—~G)

1C502

X50!

7.2MHz

S511

$50!

$502

$503

$504

$505

TING/MODE

$514

S516

foie)

[4]

[—]

$509

$5i0

$513

$515

S5I7

MW/LW

MERORY

SCAN

$506

S507

$508

Ce}

C7)

Ce)

(2) [9]

AMP

ihe

PLL

DET

C102

D108

ST-$222ES

B+

PLL

DET

IC103

(1/2)

‘

IFTIOS

NULL

PLL

DET

Qu!

CNJ70OI

Steen

RT20I

SEPARATION

AUTO

STOP

ADJ

POWER

MUTING

Q60!

REGULATOR

IC60)

MUTING

Q201

,202

(5)

ADJ

0203

D603

B+

REGULATOR

(45V)

0603

PT7OI

$70!

POWER

D605

TRANSHGRMER

LOWER]

O00

POWER

OFF

MUTING

Q602

CNP7OI

-AEP

MODEL

D603

D607

“—

MODEL

$T-$222ES

SECTION

DISASSEMBLY

TOP

COVER

REMOVAL

Remove

four

top

cover

screws.

FRONT

PANEL

REMOVAL

Remove

six

screws

securing

front

panel.

Note:

the

disassembly

procedure

the

numerical

order

given.

TUNER

BOARD,

PRESET

BOARD

(A/B),

LED

BOARD

board

support

Remove

tuner

board

while

pushing

pawl

the

direction

arrow.

BVTT3x6

tuner

board

preset

(A)

board

ST-$222ES

SECTION

ADJUSTMENTS

SECTION

TRACKING

ADJUSTMENT

FREQUENCY

COVERAGE

ADJUSTMENT

Signal

generator

signal

generator

OUTPUT

ANTENNA

terminal

(7§Q)

Adjust

for

maximum

reading

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

adjustment

indication

VOM

part

VTVM

(de

range)

104

test

point

STANDARD

SIGNALS

FOR

ADJUSTMENT:

Stereo

Signal

Carrier

frequency:

98MHz

Modulation:

Audio

400Hz

16.25kHz

deviation

(40%)

Subchannel

16.25kHz

deviation

(40%)

Pilot

19kHz

7.5kHz

deviation

(19%)

Monaural

Signal

Carrier

frequency:

98MHz

Modulation:

400Hz,

40kHz

deviation

(100%)

Discriminator

Adjustment

Procedure:

stereo

VOM

signal

generator

(dc

range)

Output

level:

10mV

(80dB)

ANTENNA

terminal

(75Q)

BALANCE

VOM

(dc

range)

LPF101

TP102

rer08

test

point

test

point

Turn

signal

generator

off.

Short

TP103.

Adjust

RT103

that

VOM

reads

+50mV.

RT103

TP102

TP103

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

three

times.

Detune

the

set

pushing

the

TUNING

(+,

—)

button.

Turn

the

core

(primary

side:

Black)

IFT105

for

reading

VOM.

IFT

105

ST-$222ES

Secondary

Side

(DISTORTION)

Procedure:

BAND:

WIDE

MODE:

MONO/STEREO

stereo

distortion

signal

generator

meter

Output

level:

10mV

(80dB)

ANTENNA

OUTPUT

terminal

(75Q)

With

MONO

signal

Adjust

CT104

that

distortion

meter

reading

becomes

minimum

(0.06%

less).

Note:

Make

sure

null

point

after

making

this

adjustment.

With

STEREO

signal

(for

confirming

STEREO

lamp

lighting)

Adjust

RT104

that

distortion

meter

reading

becomes

minimum

(0.09%

less).

Note:

specification

not

met,

turn

IFT101

within

range

+90

(turn

after

making

mark

with

marker-pen

equivalent).

mark

RT104

/FT101

IFT101

Muting

Width

Adjustment

Setting:

MUTING/MODE

switch:

Procedure:

signal

generator

Carrier

frequency:

98MHz

Output

level:

10mV

(80dB)

OUTPUT

ANTENNA

terminal

(752)

Tune

98MHz

pressing

TUNING

(+,

—)

switches.

Adjust

IFT103

that

MUTING

lamp

goes

on.

Confirm

that

MUTING

lamp

goes

within

receiving

frequency

—

65kHz.

Note:

Wait

for

about

two

minutes

after

turning

the

set

on.

Muting

Level

Adjustment

Setting:

BAND:

WIDE

Procedure:

signal

generator

oscilloscope

Carrier

frequency:

98MHz

ANTENNA

terminal

OUTPUT

(752)

MODE:

MUTING

Tune

98MHz

pressing

TUNING

(+,

—)

switches.

Adjust

RT102

that

muting

level

becomes

t3dB.

RT102

Stereo

Separation

Adjustment

Procedure:

stereo

signal

generator

VTVM

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%)

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

both

channels

should

equal.

IFT

103

RT201

VTVM

[

ser

OUTPUT

TENNA

terminal

TUNING

(+,

—)

lamp

goes

on.

goes

within

(Hz.

fter

turning

the

set

on.

oscilloscope

l=]

VQ"

[

ser

inal

OUTPUT

752)

ing

TUNING

(+,

—)

1uting

level

becomes

Stereo

Separation

Adjustment

Procedure:

stereo

signal

generator

VTVM

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%)

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

both

channels

should

equal.

IFT103

RT207

RT102

MW/LW

SECTION

Setting:

BAND

SELECTOR

switch:

MW/LW

signal

generator

Put

the

lead-wire

antenna

the

set.

30%

amplitude

modulation

400

signal

MW/LW

TUNED

Level

Adjustment

Procedure:

loop

antenna

signal

generator

ferrite-rod

antenna

Carrier

frequency:

999kHz

(MW)

235kHz

(LW)

30%

amplitude

modulation

400H2

signal.

Adjust

RT101

that

TUNED

indicator

goes

with

signal

strength

58dB/m.

Confirm

that

TUNED

indicator

goes

with

signal

strength

76dB/m.

indication

VOM

part

$T-$222ES

Layout-free

antenna

OUTPUT

Repeat

the

procedures

each

adjustment

several

times,

and

the

frequency

coverage

and

tracking

adjustments

should

finally

done

the

trimmer

capacitors.

TRACKING

ADJUSTMENT

Adjust

for

maximum

reading

VTVM,

1,404kHz

603kHz

CT302

T302

RT101

wee

“Sac

TRACKING

ADJUSTMENT

Adjust

for

maximum

reading

VITVM.

310kHz

170kHz

CT301

T301

T3017

indication

VOM

part

ST-S222ES

SECTION

4-1.

MOUNTING

DIAGRAM

DIAGRAMS

—

Conductor

Side

—

Semiconductor

Lead

Layouts

Li.

[FM

INPUT

(CHASSIS)

(COTS

1$S202-1

GL-5NG6

LA5665

2SK241-Y

are

wee

See

BOARD]

)

—_———

cathode

GL-5PR21

106,108

|coAXAL

112,107,109,

IC102

wore

BLK

long

short

CNJ

701

WHT

anode

cathode

anode

10E2

NJM4560D

ZOU

301,302,303

28K

125-3

cathode

8765

2SK246-GR2

lol

iciol

IC103

+ht

(Top

view)

anode

say

TC9172P

2SA1175

302B

301B

HZ30-2L

TC9174P

fils

16151413121110

2SC710-13

401,107,

106

HZ7A3L

[OUTPUT

BOARD)

603,

C60

123458678

cathode

Saas

306,305,304,

202

LA1265

aie

LA3400

anode

;

28C535

602,60!

KV1226

IC20I

{Top

view)

ec,

103,102,

403

516

515

05,593,

anode

“PC1163H

\e)

snoae

10008

2SC634SP

10502

penne,

Cae

(STEREO

INDICATOR

BOARD)

1320

521,516,534

=T.

(CHASSIS)

405,406,501

bias

MC931

pt,

Marking

side

view

501,503,505

507

Color

code

sleeving

over

the

end

the

jacket.

508.504

506508

509,510

O——

parts

extracted

from

the

component

side.

S51

indicates

side

identified

with

part

number.

aaapes

signal

path

ameasap

-CH

signal

path

amos

R-CH

signal

path

%.:

B+

pattern

——

2—

—

3—

ST-S222ES

ST-$222ES

(CHASSIS)

(COTS

[TUNER

BOARD)

BLK

0.9

1,2

0.9

0.51

5 5

70l

POWER

TRANSFORMER

MODEL

AEP

MODEL

(AC

SWITCH

BOARD]

salad

ararteedalalahelel

bell

wioldulig

sla]

2 3

°5

AUTO

MANUAL

SIGNAL

wow

kHe

MHz

bowtie

SSI!

MUTING

MODE

LCDSO!

LIQUID

CRYSTAL

DISPLAY

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