Sony STR-AVS7OX Manual de usuario

STR-AVS7OX/AVI070X

SERVICE

MANUAL

Model

Canadian

Model

STR-AV970X/AV1070X

Model

STR-AV1070X

Photo

AV970X

Photo

AV1070X

SPECIFICATIONS

Audio

Power

Specifications

Less

than

70nV

Damping

factor

With

8-ohm

load,

both

channels

driven,

from

20,000

Hz,

rated

120

watts

(STR-AV1070X)

100

watts

(STR-

AV970X)

per

channel

minimum

RMS

power,

with

than

0.015%

(STR-AV1070X)

0.03%

(STR-

AV970X)

total

harmonic

distortion

from

250

milliwatts

rated

output.

Other

Specifications

Amplifier

section

Bohms,

at1

195

140

kHz

IHF

walts

watls

ohms,

kHz

JHF

Harmonic

distortion

rated

Less

than

output

0.015%

Intermodulation

(IM)

distortion

Less

than

Less

than

rated

output

0.015%

0.03%

Power

output

center

amplifier

|30

watts

(STR-AV1070X

only)

(15

watts,

ohms

1kHz)

Power

output

surround(REAR)/}

watts

DRLC

amplifier

ohms,

1kHz)

Frequency

PHONO

RIAA

equalization

curve

0.5

response

CD,

DAT,

—

kHz

/)dB

TAPE

1,2

VIDEO

1,2,3"

Dynamic

power

output

250

watts

190

watts

Less

than

0.03%

Input

sensitivity/

impedance

DAT,CD,

VIDEO

1,2,3°

TAPE

1,2

150

kilohms

105

dB**

(A,150mV)

SPEAKERS

{Accepts

seakers

8-16

ohms

HEADPHONES]

Accepts

headphones

high

and

low

impedance

CENTER

OUT,}2.5

tkilohm

REAR

OUT

PRE

OUT

1V,

1Kilohm

MUTING

-20dB

OBFB

+10

(70

Hz)

Graphic

Equalizer

7-band

+10

63Hz,

160

Hz,

400Hz,1kHz,

2.5

kHz,

6.3

kHz

and

kHz

*STR-AV1070X

only

*78IHF

~—

Continued

page

—

STEREO

/FM-AM

RECEIVER

ONY.

MICROFILM

STR-AV970X/AV1070X

tuner

section

;

Frequency

range

87.5

—

108.0

MHz

Antenna

terminals

300

ohms,

balanced

ohms,

unbalanced

Sensitivity

18.3

dBf,

4.5

(mono)

38.3

dBf,

(stereo)

Usable

sensitivity

11.2

dBf,

(IHF)

carat

distortion

nie

Spurious

response

ratio

intermodulation

800

kHz

Auto

tuning

dBf

threshold

High

dBf

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

MARK

DOTTED

LINE

WITH

MARK

THE

SCHEMATIC

DIAGRAMS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUB-

LISHED

SONY.

tuner

section

Frequency

range

530

—

1710

kHz

(with

kHz

interval)

531

—

1710

kHz

(with

kHz

interval)

Usable

sensitivity

dB/m

(at

1,000

kHz

999

kHz)

Harmonic

distortion

0.5%

(50

mV/m,

400

Hz)

Antenna

Selectivity

kHz),

(10

kHz)

Auto

tuning

threshold

{55

dB/m

Video

section

pete,

STR-AV1070X

STR-AV970X

VIDEO

1,2,3:

VIDEO

1,2:

Vp-p

ohms

Vp-p

ohms

VIDEO

MONITOR:

Vp-p

ohms

General

Rants

eal

STR-AV1070X

STR-AV970X

System}

Tuner

section

PLL

quartz-locked

digital

synthesizer

system

Preamplifier

Low-noise

type

equalizer

section

Power

amplifier

Pure-complimentary

SEPP

section

Power

consumption

USA

model:

USA

model:

265

watts

220

watts

Canada

model:

Canada

model:

565

450

outlets

Two

switched,

total

120

watts

430

147.5

350

(17

13/16

1/8

inches)

Weight

12.5

(27

oz)

(22

02)

Supplied

accessories

wire

antenna

(1)

foop

antenna

(1)

Remote

commander

(1)

RM-P311

(STR-AV1070X)

RM-U211

(STR-AV970X)

Sony

Batteries

SUM-3(NS)

(2)

Design

and

specifications

subject

change

without

notice.

ATTENTION

COMPOSANT

AYANT

RAPPORT

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

MARQLE

lAN

SUR

LES

DIAGRAMMES

SCHEMATIQUES

liSTE

DES

PIECES

SONT

CRITIQUES

POUR

SECLRITE

FONCTIONNEMENT.

REMPLACER

CES

Com.

POSANTS

QUE

PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

MANUE|

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

’

SAFETY

CHECK-OUT

(US

Model)

After

correcting

the

original

service

problem,

perform

the

following

safety

check

before

releasing

the

set

the

customer:

Check

the

antenna

terminals,

metal

trim,

‘‘metallized”

knobs,

screws,

and

all

other

exposed

metal

parts

for

leakage.

Check

leakage

described

below.

LEAKAGE

TEST

The

leakage

from

any

exposed

metal

part

earth

ground

and

from

all

exposed

metal

parts

any

exposed

metal

part

having

return

chassis,

must

not

exceed

0.5mA

(500

microampers).

Leakage

current

can

measured

any

one

three

methods.

commercial

leakage

tester,

such

the

Simpson

229

RCA

WT-540A.

the

manufacturers’

instructions

use

these

instru-

ments.

battery-operated

milliammeter.

The

Data

Precision

245

digital

multimeter

suitable

for

this

job.

Measuring

the

voltage

drop

across

resistor

means

VOM

battery-operated

volt-

meter.

The

‘‘limit’”

indication

0.75V,

analog

meters

must

have

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

passive

VOM

that

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

range

are

suitable.

(See

Fig.

Exposed

Metal

Parts

Set

voltmeter

(0.75

Earth

Ground

Using

voltmeter

check

leakage.

STR-AV970X/AV1070X

TABLE

CONTENTS

Section

itle

Page

GENERAL

L-l,

COonnections--1s+srsssterteteeeeetenreeereeesees

eee

neertsstesesences

1-2.

Parts

Identification

s:::::sressrrerreeerereeenteeeeteeeettette

eee

ELECTRICAL

ADJUSTMENTS

------v-erseeerrcetsteererereee

DIAGRAMS

31.

Circuit

Boards

Locations:rrcsrsrrerrersterseesesseeeserseres

3-2.

Printed

Wiring

Boards

—Main

Section—-srrrs+:

33.

Schematic

Diagrams

—Main

Section

creer

Schematic

Diagrams

—Sorround

Section

—-+++"+"*:

Schematic

Diagrams

—

Display

Section—

srr

EXPLODED

VIEWS

4-1,

Front

Panel

Section

4-2,

Chassis

Sectionssrssssssreereersestersessensensensneeesenenans

ELECTRICAL

PARTS

LIST

--rrceseercerseeseeeerseetrteeteres

1-1.

CONNECTIONS

Notes

Connections

Donotconnect

the

power

cord

outiet

nor

press

the

POWER

switch

before

accomplishing

all

other

connections

The

cable

connectors

should

futly

inserted

into

the

yacks

Loose

connection

may

cause

hum

and

no:se

Jacks

and

plugs

(he

connecting

cord

are

color-

coded

follows:

Red

jacks

and

plugs:

For

the

right

channel

audio

signals

White

jacks

and

plugs

For

the

left

channel

audio

signals

Yellow

jacks

and

plugs:

For

video

signals

Connecting

Audio

Equipment

for

center

speakers

antenna

Monitor

amplitier

©)

antenna

Front

speaker

system

speakers)

Center

speaker

Rear

speaker

system

(STR-AV1070X

only)

(©)

‘alld

DALC

wireless

remote

control

receiver

(See

page

32.)

{at

©Front

speaker

system

speakers)

OUT

Equalizer

etc.

8 8

ST.

@ODALC

speaker

system

(See

page

32.)

Tape

deck

White

-»

7©R

Red Red

Connecting

Video

Equipment

Monitor

VIDEO

Monitor

(ORLC)

VIDEO

STR-AV1070X

only

WduaANdS

NOILOAS

‘Jenuew

uoNoNsysui

XOLOLAV

/XOL6AV-HLS

famed

Qa.

1-2.

PARTS

IDENTIFICATION

Front

Panel

Ampliitier

and

general

section

EDIT

AUDIO

button

Sound

fietd

control

section

CURSOR

MODE

indicators

CURSOR

MODE

buiton

MUTING

switch

and

indicator

Remote

contro!

sensor

(STR-AV970X)

EDIT

VIDEO/AUDIO

buttons

(STR-AV1070X)

POWER

switch

VOLUME

DALC/

contro!

POWEA

switch

HEADPHONES

jack

CURSOR

mode

operation

buttons

BALANCE

control

SPEAKERS

Function

selectors

and

TAPE

MONITOR

selector

button

and

indicator

VIDEO

3/INPUT

jack

(STR-AV1070X

only)

Tuner

section

DISPLAY

FREQ/INDEX

button

PRESET

TUNING

+/-

buttons

TUNING

LEVEL

button

PRESET

LINK

PGM

button

TUNING

DIRECT

button

PRESET

LINK

INDEX

SELECT/TUNING

ON/OFF

button

+/~

buttons

HES

CURSOR

Cit

E+

MODE

OO)

FM/AM

button

SHIFT

button

CURSOR

mode

operation

buttons

MODE

buton

MEMORY

button

ener

CURSOR

MODE

button

SOUND

FIELD

RECALL

button

SOUND

FIELD

+/-

buttons

DBFB

(Dynamic

Bass

Numeric

buttons

Feed

Back)

button

DOLBY

PRO

LOGIC

selector

SURROUND

MODE

selector

URROUND

ON/OFF

button

EQUALIZER

GRAPHIC

button

EQUALIZER

FLAT

button

EQUALIZER

ON/OFF

button

CURSOR

mode

operation

buttons

XOLOLAV/XOLEGAV-YHLS

Remote

Commander

RAM-U211

(supplied

with

the

STR-AV970X)

RM-P311

(supplied

with

the

STR-AV1070X)

(Program

control

section

(RM-P311

onty)

Mode

selector

and

indicator

(page

34)

SONY

STD:

contro!

Sony

equipment

USER

STD:

control

equipment

whose

remote

contro!

functions

are

stored.

LEARN:

store

functions

other

remote

commanders

emitting

infrared

rays

PROGRAM

CLEAR

button:

Clears

the

stored

functions.

MODE

selector

select

the

functions

indicated

ight

gray

such

DECK,

DAT,

player

and

CURSOR/

SURROUND

mode

the

receiver

select

the

functions

indicated

blue

such

VTR,

LOP

(Laser

disc

player)

and

TV.

Cursor

control

section

CURSOR

operation

butions

MODE

bulton.

Selects

cursor

mode

(4)

Sound

control

section

SURROUND

buttons

ON/OFF:

Turns

on/off

the

surround

mode

MODE:

Selects

the

surround

mode

(test)

TONE.

Generates

pink

noise

signal

that

sent

succession

each

speaker

(equalizer)

ON/OFF

button:

Turns

on/olt

the

equalizer,

S.(sound)

FIELD

buttons

MODE:

Selects

sound

field

mode

USER/PRESET

button

(AM-P311

onty):

This

button

does

not

operate

OBFB

button

(RM-U211

only):

Turns

on/off

the

OBFB

(Dynamic

Bass

Feed

Back)

ODS/OBFE

bution

(RM-P311

only):

Turns

on/off

the

DBFB

(Dynamic

Bass

Feed

Back).

(DDS

function

Not

available

with

this

receiver.)

)

Amplifier

section

FUNCTION

selectors:

Select

input

source

the

receiver.

(The

VIDEO

button

does

not

operate

the

STR-AV970x

)

DIGITAL

button

(RM-P311

only):

This

button

does

not

operate.

REAR

LEVEL

+/-

buttons:

Control

the

volume

rear

speakers

(surround

level)

MUTING

button:

Mutes

the

sound.

MASTER

VOL

+/-

buttons:

Control

the

receiver

volume

CENTER

LEVEL

+/~

buttons

Control

the

volume

center

speaker

(Surround

level)

SCREEN

buttons

(RM-P311

only)

ON/OFF

button:

This

button

does

not

operate

TITLER

ON/OFF

buiton:

This

button

does

not

operate.

[6]

Control

for

other

equipment

Power

control

block

SYSTEM

OFF

button:

Turns

oft

the

power

the

whole

system:

LDP, VTR,

and

AUDIO

LOPATR/TV/AUDIO

POWER

butions:

Control

tne

power

each

unit

CDP/LDP

control

block

(disc)

SKIP.

Disc

skip

(for

player

equipped

with

mulli-disc

changer)

>»

Staris

play

‘mi.

Locates

deswed

selection

(tor

aCD

player

only

with

RM-U211)

Stops

play.

<<>>:

Manual

(for

laser

disc

player

only

with

RM-U211)

Pause

TAPE/OAT/VTR

control

block

ANT

TV/VTR

button.

Selects

the

output

signal

trom

the

antenna

terminal

the

VCR,

ether

signal

VCR

programs

VTA

+/-

bullons:

Select

channel

the

VCR

<</>—.

fast

winding

m@.

Stop

</>

Play

Pause

Recording

(AM-U211:

While

pressing

press

REC

MODE

REV/FWD

buttons

(RM-P311

only):

For

reverse

recording,

press

REV

and

together.

For

forward

recording,

press

FWD

and

together

DECK/VTR

selector

(AM-U211

only)

MODE

1(DECK

A,B

and

DAT):

Selects

DECK

DAT

MODE

2{VTR

and

3).

Selects

VTR

2013

VTR

Betamax

VCRs

VTR

8mm

VCRs

VTA

VHS

VCRs

control

block

TVNIDEO

selector.

Selects

the

program

see.

VIDEO

VOL

+/-

buttons:

Control

the

volume

+/-

buttons.

Select

preset

channel

Program

number

and

ENTER

buttons:

Select

the

channel!

SLEEP

button

Set

the

SLEEP

timer

mode.

this

mode,

the

unit

automatically

turned

off

after

minutes

{8}

Tuner

section

INDEX

SELECT

and

INDEX

butions.

Select

indexed

preset

station

TUNER

SHIFT

and

PRESET

+/-

butions.

Selecta

preset

station

(3}

RESET

button

(RM-P311

only)

Reset

the

commander

the

initial

state

Note

the

(recording)

button

under

TAPE/DAT/VTR

buttons

your

recorder

such

type

pressing

puts

recording

Pause

mode.

first

press

this

commander

and

then

Note:

The

(play)

buttons

[§]

ang

the

SHIFT

button

and

PRESET

buttons

can

function

without

oressing

one

ine

FUNCTION

buttons

(8).

the

player

connected

ine

jacks,

the

tape

deck

the

TAPE

jacks

and

the

video

deck

the

VIDEO

Jacks

(switcn

the

DECK/VTR

Selector

ihe

remote

commander

VTR

XOLOLAV

/“XOL6AV-ULS

SECTION

ELECTRICAL

ADJUSTMENTS

2-1,

ELECTRICAL

ADJUSTMENTS

SECTION

Discriminator

(NULL)

Adjustment

Setting

stereo

signal

generator

Carrier

frequency

98MHz

Output

level

25dB

Modulation

1kHz

ANTENNA

3002

75kHz

dev.

terminal

(10096)

VOM

(DC

range)

NULL

terminal

Procedure

Tune

the

set

98MHz,

Adjust

T21

for

reading

the

VOM.

Note:

Tuning

level

adjustment

should

made

after

discriminator

adjustment,

Tuning

Level

Adjustment

Setting

stereo

signal

generator

Carrier

frequency

98MHz

Output

level

60dB

Modulation

IkHz

75kHz

dev.

(10096)

ANTENNA

300Q

terminal

Procedure

Tune

the

set

98MHz,

Adjust

RV24

that

the

STEREO

LED

goes

on.

Note

Ceramic

Filter

(CF1,

Replacement.

This

set

employs

two

ceramic

filters

(CF1,

which

should

have

the

same

color

marking

identify

their

center

frequency.

Therefore

offset

adjustment

(*A,

*B)

connection

necessary

match

the

center

frequency

the

ceramic

filters

used

with

intermediate

frequency.

color

marking

(CFI,

«FM

Stereo

Separation

Adjustment

Setting

stereo

signal

generator

VTVM

ANTENNA

300

REC

OUT

terminal

Carrier

frequency

98MHz

Output

level:

60dB

Modulation

Audio

(1kHz)

33.75kHz

dev.

(4596)

Pilot

(19kHz)

7.5kHz

dev.

(109)

Sub-channel

(38kHz)

33.75kHz

dev.

(4596)

Procedure

Tune

the

set

98MHz,

stereo

signal

generator

output

channel

VTVM

connection

VTVM

reading

(dB)

Adjust

RV21

for

minimum

reading.

Adjust

RV21

for

minimum

reading.

L-CH

Stereo

separation

—-®

R-CH

Stereo

separation:

-@®

The

separations

both

channels

should

equal.

short

open

intermediate

frequency

Color

Center

frequency

mark

(MHz)

(D134)

(D135)

Ceramic

filter

(MHz)

¢«

Auto

Stop

Level

Adjustment

Setting

stereo

signal

generator

ANTENNA

3002

terminal

Carrier

frequency

98MHz

Output

level

40dB

454B

Procedure

REC

OUT

Turn

the

High/Low

select

switch

High.

Adjust

RV25

that

the

TUNED

LED

goes

on,

SECTION

Tuning

Level

Setting

signal

generator

Put

the

lead-wire

antenna

the

set.

(Em

3096

amplitude

modulation

400Hz

signal

Procedure

Tune

the

set

1,050kHz,

LOOP

ANTENNA

antenna

terminal

Adjust

the

RV22

that

the

TUNED

LED

goes

on,

Adjustment

Location

Tuner

board

(SURROUND

BOARD)

RV25

[AUTO

STOP

LEVEL

ADI

STOP

LEVEL

ADJ

RV22

TPI

Ter

RV21

RV24

721

TUNING

LEVEL

ADJ

AMP

SECTION

Bias

Adjustment

Perform

this

adjustment

after

replacement

power

amp

drive

circuit

transistors.

Setting

VOLUME:

SPEAKERS:

OFF

(no

load)

Procedures

Connect

the

digital

voltmeter

Bias

Check

Point

(TP701:

L-CH,

TP751:R:

RCH).

Increase

the

power

voltage

gradually

120V

confirming

that

the

voltmeter

will

not

indicate

abnormal

value,

(MAIN

BOARD]

Confirm

that

the

display

normal.

Adjust

RT701

(L-CH)

RT751

(R-CH)

that

the

reading

the

voltmeter

becomes

2mV

within

seconds

after

the

power

turned

on,

Note:

normal

that

the

voltage

will

increase

time

passes.

Turn

the

power

off

and

remove

the

digital

voltmeter.

RT7S1

SECTION

DIAGRAMS

31,

CIRCUIT

BOARDS

LOCATION

TRANSFORMER-3

BOARD

(1070X

MODEL)

POWER

BOARD

TRANSFORMER-1

BOARD

(970X)

TRANSFORMER-2

BOARD

(1070X)

HEADPHONE

BOARD

DISPLAY

BOARD

MUTE

BOARD

VOLUME

BOARD

FRONT-END

SCHEMATIC

DIAGRAM

SPEAKER

OUT

BOARD

VOLTAGE

SELECTOR

BOARD

(1070X

MODEL)

REAR

BOARD

SURROUND

SPEAKER

BOARD

VIDEO

BOARD

SURROUND

BOARD

MAIN

BOARD

EQUALIZER

BOARD

RELAY

BOARD

BALANCE

BOARD

TRO

2803494

R09

2208

PET

EPA

LM3875-2

SI-18752N

M5218AL

12345678

M5F78MOSL

M5F78M12L

GNO

ouT

M5F79M12L

UPD75517GF-

016-3B9

MARKING

SIDE

VIEW

2SA988-PAFAEA

2S8C1841-PAFAEA

2SA1175-HFE

termes

onde

2SA1215-OY

2SA1492-0Y

2SC2921-OPY

2SC3856-OY

2SA1684-LK

28C4431-LK

28C2603-EF

2SC2669-OY

28C3113-AB

28C3623A-LK

DTA124ES

DTC114ES

DTC124ES

28D774-34

2802012

2SK246-Y

2SK246-GR3

11ES2

188120

HZS6C3L

12S830-3L

1S$355

CH,

Cathode

HZ4ALL

RBV-406H-01

RBV-602

ioe

STR-AV970X/AV1070X

SEMICONDUCTOR

LEAD

LAYOUTS

S$v04

moe

SEL2810A

SEL3810A-CD

SEL2810A-C

short

anode

cathode

SEL2813A-D

STR-AV970X

“AV1070X

3-2.

PRINTED

WIRING

BOARDS

—MAIN.

SECTION—

Refer

page

for

Semiconductor

Lead

Layouts.

Bret

[EQUALIZER

BOARD}

[SURROUND

BOARD]

cements

cael

CHBSSIST

[DISPLAY

BOARD]

—14

Este manual sirve para los siguientes modelos

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