Sony STR-313L User manual

GENERAL

Power

Requirements:

Power

Consumption:

Dimensions:

Weight:

SECTION

Frequency

Range:

Antenna:

Intermediate

Frequency:

Sensitivity

50dB

Quieting:

SPECIFICATIONS

240V

ac,

50H2(UK

model)

120V,

220V

240V

adjustable,

50Hz(AEP

model}

210W(UK

model)

180W(AEP

model)

Approx.410(w)x145(h)x310{d)mm

16(w)x5

3/4

(h)x12

"/s

(d)

inches

including

projecting

parts

and

controls

Approx.7.6kg,

(net)

Approx.8.8kg,

{in

shipping

carton)

87.5—108MHz

300

balanced

unbalanced

10.7MHz

3.5uV

(10.7dB)

(MONO)

45uV

(33dB)

(STEREO)

SAFETY

COMPONENT

WARNING?

APONENT

THE

OPER

ATION

IDENTIFIED

SCHEMATIC

DIAGRAMS,

AND

THE

PARTS

LiST

ARE

CRITICAL

REPLACE

THESE

COMPONENTS

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

LISHED

SONY

SHADING

ANG

MARK

EXPLODED

Sensitivity

46dB

Quieting:

AEP

Model

4uV

(12dB)

(MONO)

{at

40kHz

deviation)

50uV

(34dB)

(STEREO)

Usable

Sensitivity:

{at

40kHz

deviation)

S/N

Ratio:

Harmonic

Distortion:

Separation:

Frequency

Response:

1.8uV

(5dB),

1.6uV

(4dB),

S/N=26d0B

75dB

(MONO)

70dB

(STEREO)

100Hz

0.2%

(MONO)

0.3%

(STEREO)

1kHz

0.2%

(MONO}

0.3%

(STEREO)

10kHz

0.3%

(MONO)

0.5%

(STEREO)

0.2%

(MONO)

0.3%

(STEREO)

30dB

100H%Z

45dB

kHz

35dB

10kHz

40-12,

500Hz*9:5

30-15,

OOOHz

*3:3

—

Continued

page

—

SERVICE

MANUAL

STR-313L

Selectivity:

Capture

Ratio:

Suppression

Ratio:

Image

Response

Ratio:

Response

Ratio:

Spurious

Response

Ratio:

Intermodulation:

Muting

Threshold:

SW/MW/LW

SECTION

Frequency

Range:

Antenna:

Intermediate

Frequency:

Usable

Sensitivity:

S/N

Ratio:

Harmonic

Distortion:

Selectivity:

60dB

(400kHz)

40dB

(300kHz,

S/N=26dB,

40kHz

deviation)

1.0dB

54dB

45dB

90cB

75dB

60dB

Approx.

5uV

SW:

5.8—-15.8MHz

MW:

530—1,605kHz

LW:

150—350kHz

SW/MW:

External

antenna

terminal

Attached

antenna

wire

LW:

Built-in

Ferrite-rod

antenna

External

antenna

terminal

468kHz

SW:

30uV

(29.5dB),

external

antenna

(10MHz)

MW:

100uV

(40dB),

external

antenna

(1,000kHz)

LW:

500uV/m

(53.8dB/m),

built-in

antenna

100uV

(40d8),

external

antenna

(230kHz)

SW/MW:

52dB

(5mV)

LW:

52dB

(50mV/m)

SW/MW:

0.3%

(5mV,

400Hz)

LW:

0.3%

(50mV/m,

400Hz)

28dB

(9kHz)

30dB

(10kHz)

AUDIO

AMPLIFIER

SECTION

Continuous

RMS

.Power

Output:

Less

than

0.5%

THD,

both

channels

driven

simultaneously

20—20,

OOOHz

25W+25W

1kHz

27W+27W

According

DIN

45500

25W+25W

&2)

25W+25W

less

than

0.7%

THD)

MODEL

IDENTIFICATION

—

Rear

Panel

—

AEP

model

SONY.

|FM-AM

PROGRAM

RECEIVER

MODEL

NOSTR-3I3L

FREQ

RANGE

FM87.5-108

MHz

5.8

—

15.8

MHz

530-1605

KHz

150-350

KHz

107

MHz

468

KHz

AC:

220V

50Hz

180W

MADE

SIRIAL

sets

Dynamic

Power

Output:

Power

Bandwidth:

Damping

Factor:

Harmonic

Distortion:

(60Hz:

7kHz=4:1)

Residual

Noise:

Frequency

Response:

IHF

constant

power

supply

method

9OW

10—40,

O000Hz,

IHF

kHz

Less

than

0.5%

rated

output(8

Less

than

0.7%

rated

output

Less

than

0.2%

output

Less

than

0.3%

output

Less

than

0.5%

rated

Output

Less

than

0,2%

output

Less

than

0.08uW

(at

82)

PHONO:

equalization

curve

10-50,

000

148

—3dB

Inputs:

nye

Weighting

Sensitivity

Impedance

S/N

network

PHONO

2.5mVv

(-sod8)

50k2

|700B]

150mV

(—15.5dB)|

100k2

|90dB

Measured

with

rated

output

power

into

loads

{both

channels

driven

simultaneously)

1kHz.

Outputs:

(with

rated

input)

voir

“rpadanes

REC

OUT

|150mV

(-15.50B))

—

10kQ

Headphones:

Speaker:

Tone

Controls:

Loudness

Control:

Accepts

all

low

high

impedance

headphones

4—16

speakers

are

suitable.

BASS

+8d8

100Hz

TREBLE

+8dB

10kHz

+8dB

100Hz

(att.

30dB)

+3dB

10kHz

model

SONY.

|FM-AM

PROGRAM

RECEIVER

MODEL

NO,STR-3I3L

FREQ

RANGE

FM875-108

MHz

5.8

—

15.8

MHz

530-1605

150-350

KHz

107

MHz

468

KHz

AC:

240V

50Hz

210W

MADE

SIRIAL

1-1.

SW/

J802

TAPE

J803

BLOCK

DIAGRAM

ANTENNA

L80l

FERRITE

-ROD

SECTION

OUTLINE

FRONT-END

BLOCK

rea

FM-

BAND

gIND

ago

PHONO

—~°

SENSO

$3-3

MONITOR

SOURCE

TAPE

STEREOS

$4-3

(BAND

SELECTOR)

—p>

PROGRAM

—>

STR-313L

RV60I

VOLUME

MONO

R-CH

AMP

DET

(4)

MPX

CIRCUIT

202

(5)

CW)

R-CH

(3)

(8) (5)

FLAT

AMP

;

PL201

20!

cat.

ees

(3)

STEREO

SEPARATION

S$4-2

S4-|

STEREO

Lag

RT201

B+

MPX

fence,

MONO

ont

Oke

D401

SASOE

0204

SWITCHING

MUTING

a4ol

Q202

PHOTO

SENSOR

40l

SWITCHIN

SWITCHING

1¢

401

402

403

Ls)

(PROGRAM)

0405

PL403

PROGRAM

SOURCE

SENSOR

si-

OTAPE

$2-3

PL404

TUNER

0404

PL405

SWITCHING

0406

[PHONO]

PL406

TAPE

PL4

SENSOR

SWITCHING

0404

0405

(PROGRAM)

$5-!

OUDNES

LOUDNESS

B60!

satel

(Equacizer)

y601

AMP

PTBOI

>——}

0-4]

[HEADPHONES

toy

VOLTAGE

(TUNER)

REGULATOR

701

R-CH

RV602

BALANCE

RV603

RV604

B+

BASS

TREBLE

(ROMER)

B-

“STR-313L

1C201

(CX168),

1C202

(CX178)

Muting

Gate

Regulator

These

two

ICs

form

system.

Both

them

are

Muting

Canceler

Circuit

bipolar-linear-ICs.

CX168

integrates

343

elements

and

CX178

integrates

260

elements.

They

include

many

Pop-noise

Canceler

functions

and

are

improved

upon

the

degree

inte-

Hysteresis

Circuit

gration

now

available

linear-ICs

for

tuner

use.

They

have

high

performance

reception

and

form

muting

system

having

muting

attenua-

tion

90dB.

addition,

because

muting

circuit

newly

employed

the

circuit

not

only

there

high

performance

reception

but

station

The

terminals

()

and

(2)

the

photo

interrupter

operate

the

light

emitting

diode.

the

other

signal

can

received

with

fine

tone

quality

and

sen-

cats

sitivity

with

broadcasting

station.

addi-

and,

the

terminals

(3)

and

(4)

operate

the

photo

detector.

When

the

photo

detector

receives

the

light

tional

function,

they

operate

for

FM/AM

continuous

Pace

: :

station

selection,

FM/AM

signal-strength

meter

out-

Fig.

the

terminal

Derwcen

senminals

(3)

put,

FM/AM

muting

output

switching

and

enforced

and

(4)

low-impedance.

When

light

intercepted

AGC

reception.

the

marker,

shown

Fig.

becomes

high-

impedance.

Photo

Interrupter

(1C401,

402)

CX168

Main

Function

When

the

photo

detector

receives

the

light

When

light

intercepted

photo

interrupter

(1C401,

402)

photo

detector

photo

detector.

<FM>

Amplifier

Quadrature

detector

aoe

Signal-strength

Meter

Output

aaa

Muting

Signal

Output

light

emitting

-—

AFC

Output

for

Converter

diode

Side

view

Back

view

Multipath

Signal

Output

light

emitting

diode

Bandpass

Control

Circuit

Fig.

Attenuator

Mixer

Oscillator

Amplifier

and

AGC

Detector

Signal-Strength

Meter

Output

Signal

Generator

for

Muting

Regulator

FM/AM

Switching

Regulator

Output

CX178

Main

Function

<FM

Stereo

Demodulator>

Stereo

Demodulator

Phase

Detector

Stereo

Indicating

Circuit

vco

VCO

ON/OFF

Circuit

1-2.

CIRCUIT

DESCRIPTION

(See

Fig.

Program

Sensor

When

the

band

selector

switch

(S1)

and

FUNC-

TION

switch

(S2)

are

set

PROGRAM

position

and

band

selector

position

respectively

and

the

pointer

matches

with

station

marker,

station

automatically

selected

through

optical

detection.

(Fig.

When

the

pointer

matches

only

with

the

.FM

station

marker:

The

light

IC401

(Photo

Interrupter)

inter-

cepted

the

marker,

bias

voltage

applied

the

base

Q402

through

R405,

and

Q402

turned

on.

The

collecter

voltage

Q402

reduces

and

D401

turned

on.

The

terminal

@3)

IC201

grounded

through

D201, R204,

D401,

Q402

and

D403.

circuit

operates

(The

terminal

Q3)

IC201

serves

switch).

Note:

When

voltage

applied

the

terminal

Q3)

IC201

through

R401,

R204

and

D201,

the

receiver

mode.

the

same

time,

Q403

on,

PL401

(FM

indicator

lamp)

lights.

When

the

pointer

matches

only

with

the

station

marker:

the

light

IC401

not

intercepted,

Q402

and

D401

are

turned

off.

result,

voltage

applied

the

terminal

Q3)

IC201

through

R401

and

R204.

the

other

hand,

the

light

IC402

intercepted

the

station

marker,

Q404

and

Q405

are

turned

on.

voltage

applied

L306

(LW

oscillator

coil).

circuit

operates.

When

Q405

on,

PL402

(LW

indicator

lamp)

simultaneously

lights.

(C201

TERMINAL

(23)

020!

R204

R40)

L306

(Lw

osc)“

STR-313L

When

the

pointer

matches

simultaneously

with

both

the

and

station

markers:

Q402

and

Q403

are

turned

intercepting

the

light

IC401.

the

other

hand,

the

light

IC402

also

intercepted

and

the

bias

voltage

applied

the

base

Q404,

but

because

the

collector

voltage

Q403

high,

D404

turned

off.

The

emitter

voltage

Q404

rises

and

voltage

not

applied

L306

(LW

oscillator

coil)

and

PL402.

Consequently,

only

the

station

signal

received.

10401

station

marker

The

light

ain

tercepted

sp:

this

portion.

station

marker

pointer

'C€402

Fig.

Q202

and

401

Q401

operates

improve

the

rise

time

P1401

(FM

indicator

lamp)

PL402

(LW

indicator

lamp)

when

tuning

the

receiver,

and

the

same

time

Q401

switches

Q202.

Q202

serves

high-speed-muting

switch

which

turned

off

soon

the

station

signal

tuned

detuned.

(C202

TERMINAL(IS)

Q202

Rac2=

——-

R403

(SENSOR

BOARD

Fig.

eee

SOURCE

PL401

{FM}

Fey

0406

RANG

PLaoe

LW]

paar

Zrais

so(RUNCTIR]

S"BANO

SELECTOR}

TAPE

’

;

PROGRAM

AND

SOR

SELECTOR,

PHONO

sly

§TR-313L

REPLACEMENT

TA,

P3x8;

w/teeth

heat

sink

PTT3x12

Note:

Tighten

two

screws

alternately.

not

tighten

excess.

BVTT3x6

Unsolder

the

pins

1C601.

SECTION

STR-313L

DISASSEMBLY

the

disassembly

procedure

the

numerical

order

given.

TOP

COVER

REMOVAL

top

cover

screw

top

cover

top

cover

screw

BOTTOM

PLATE

REMOVAL

BVTT3x6

bottom

plate

retainer

DIAL

CORD

STRINGING

See

page

FRONT

GLASS

REMOVAL

TA,

B3x6

front

panel

front

glass

retainer

FRONT

PANEL

REMOVAL

front

panel

Pull

out

the

knobs.

set

screw

2mm

)

STR-313

756mm

‘ai

spring

DIAL

CORD

STRINGING

(29%

inches)"

Preparation

Cut

the

rest

cord

off.

Squeeze

here,

Turn

the

tuning

capacitor

shaft

fully

clockwise

and

set

the

dial

drum

that

the

slot

positioned

shown

below.

Stringing

Wind

the

dial

cord

two

turns.

Dial

Pointer

Installation

perform

the

mechanical-dial

calibration

utilizing

off-the-air

local

signals.

TA,

B3x6

dial

cord

After

dial

calibration,

string

the

dial

cord

while

taking

the

dial

pointer

up.

(cm)

STR-313L

CTION

ADJUSTMENTS

3-1.

SW,

SECTION

Setting:

FUNCTION

switch:

(Band

Selector)

(Band

Selector)

SW,MW

[Mw]

signal

generator

Put

the

lead-wire

antenna

the

set.

(

30%

amplitude

modulation

400

signal

generator

CON

30%

amplitude

modulation

400

signal

external

antenna

10pF

terminal

iti

eam

1304

CT304

6.5

MHz.

16.1

MHz

Adjust

for

maximum

reading

VOM.

VOM

(range:

0.5-5V

ac)

REC

OUT

Repeat

the

procedures

each

adjustment

several

times,

and

the

frequency

coverage

and

tracking

adjustments

should

finally

done

the

trimmer

capacitors.

FREQUENCY

COVERAGE

ADJUSTMENT

Adjust

for

maximum

reading

VOM.

4305

520

kHz

CT305

1680

kHz

TRACKING

ADJUSTMENT

Adjust

for

maximum

reading

aad

VOM.

CT302

1400

kHz

L302

600

kHz

CT301

L301

MHz

Adjust

for

maximum

reading

VOM.

FREQUENCY

COVERAGE

ADJUSTMENT

TRACKING

ADJUSTMENT

—~10—

STR-313L

3-2.

SECTION

Setting:

FUNCTION

switch:

(Band

Selector)

(Band

Selector):

ANTENNA

switch:

BUILTIN

signal

VOM

generator

(range:

0.5—5V

ac}

Put

the

lead-wire

antenna

the

set.

set

ft}

30%

amplitude

modulation

400

signal

REC

OUT

Repeat

the

procedures

each

adjustment

several

times,

and

the

frequency

coverage

and

tracking

adjustments

should

finally

done

the

trimmer

capacitors.

EXT

ANTENNA

COIL

ADJUSTMENT

signal

dummy

antenna

generator

20H

125pF

3202

400pF

Carrier

frequency:

170

kHz

30%

amplitude

modulation

external

antenna

Fog

400

signal

REC

OUT

Set

the

ANTENNA

switch

EXT

position.

Tune

the

set

170

kHz

and

adjust

L303

for

maximum

reading

VOM.

TRACKING

ADJUSTMENT

Adjust

for

maximum

reading

VOM.

CT303

310

kHz

L807

170

KHz

FREQUENCY

COVERAGE

ADJUSTMENT

Adjust

for

maximum

reading

VOM.

L306

145

kHe

CT306

365

kHz

Sell

‘

mal

SMAI

Pritt

—-W1-—

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