Sony TRINITRON KV-8AD12 Manuale utente

KV-BAD

RM-793

SERVICE

MANUAL

This

service

manual

only

for

kitchen

holder

KV-8AD12.

case

repair

set

itself,

Please

use

the

service

manual

for

KV-8AD11/8AD14.

Television

system

Channel

coverage

Picture

tube

Antenna

Speaker

Inputs

Output

MICROFILM

SPECIFICATIONS

American

standard,

NTSC

color

VHF

channels

—

UHF

channels

—

CATV

channels

—

125

(181

total

receivable

channels)

Trinitron

tube

8-inch

picture

measured

diagonally

9-inch

picture

tube

measured

diagonally

70-degree

deflection

VHF/UHF

telescopic

antenna

77mm

round

(3%

inches)

VIDEO

jacks

VIDEO:

RCA

phono-type

Vp-p,

ohms

AUDIO:

RCA

phono-type

monaural

EXT

ANT

(Combined

CATV/VHF/UHF

75-ohm,

F-type)

Earphone

jack

ViDEO

OUT

jacks

VIDEO:

RCA

phono-type

AUDIO:

RGA

pnono-type

monaural

Power

requirements

Power

consumption

Dimensions

Weight

Supplied

accessories

Optional

accessories

MODELS

THE

SAME

SERIES

Model

Chassis

No.

SCC-E73C-A

120

AC,

12/24

IN:

max.

IN:

max.

Approx.

239

197

310

(w/h/d)

(9'/2

77/a

12%

inches)

Approx.

5.0

(11

Ib)

Remote

Commander

RM-793

(1)

with

size

(R6)

batteries

power

cord

(1)

Telescopic

antenna

(1)

Car

battery

cord

DCC-17AW

(1)

Brackets

for

shelf

installation

(2)

bolts

(4)

nuts

(4)

Connecting

cord

VMC-920MS

Design

and

specifications

are

subject

change

without

notice.

TRINITRON-

COLOR

ONY.

RM-793

KV-8AD12

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Buredaidg

KV-8AD12

RM-793

EXPLODED

VIEW

AND

PARTS

LIST

REF.NO.

PART

NO.

DESCRIPTION

9-902-252-01

HOLDER-KITCHEN-U

9-902-253-01

HOLDER-KITCHEN-B

9-902-254-01

HOLDER-ANTENNA

9-902-255-01

SHEET-STEAM

9-964-771-01

ACCESSORIES

AND

PACKING

MATERIALS

HKEREELEEEKE

EKER

LEER

LAKES

EET

REMARK

PART

NQ.

1-465-959-01

3-754-700-21

9-901-585-01

9-901-608-01

9-902-256-01

9-902-257-01

9-902-258-01

*9-90)2-259-01

*9-902-260-01

*9-902-265-01

Sony

Corporation

Group

—4—

DESCRIPTION

REMOTE

COMMANDER

(RM-793)

MANUAL,

INSTRUCTION

CUSHION

ROD

ANTENNA

PAPER-PATTERN

BOLT,

HEXAGON

NUT,

HEXAGON

PACKING-CASE

(SET)

PACKING-CASE

(BRACKET)

PACKING-BAG-B

REMARK

English

91LU0542-1

Printed

Japan

1991.

MICROFILM

KV-8

SERVICE

MANUAL

Television

system

Channel

coverage

Picture

tube

Antenna

Speaker

Inputs

Output

Power

requirements

Power

consumption

Dimensions

Model

KV-8AD11

Chassis

No.

SCC-E73A-A

KV-8AD14

Chassis

No.

SCC-E73B-A

Canadian

Model

KV-8ADI11

Chassis

No.

SCC-E74A-A

MODELS

THE

SAME

SERIES

KV-8AD11/8AD14

SPECIFICATIONS

American

standard,

NTSC

color

VHF

channels

UHF

channels

CATV

channels

—

125

(181

total

receivable

channels)

Trinitron

tube

8-inch

picture

measured

diagonally

9-inch

picture

tube

measured

diagonally

70-degree

deflection

VHF/UHF

telescopic

antenna

77mm

round

(3%

inches)

VIDEO

jacks

VIDEO:

RCA

phono-type

Vp-p,

ohms

AUDIO:

RCA

phono-type

monaural

EXT

ANT

(Combined

CATV/VHF/UHF

75-ohm,

F-type)

Earphone

jack

VIDEO

OUT

jacks

VIDEO:

RCA

phono-type

AUDIO:

RCA

pnono-type

monaural

120

AC,

12/24

IN:

max.

IN:

max.

Approx.

239

197

310

(w/h/d)

(9/2

77/s

12%

inches)

Weight

Cabinet

color

Supplied

accessories

Optional

accessories

Approx.

5.0

(11

Ib)

KV-8AD11:

gray

KV-8AD14:

white

Remote

Commander

with

size

(R6)

batteries

(1)

RM-792

(KV-8AD11)

RM-793

(KV-8AD14)

power

cord

(1)

Telescopic

antenna

(1)

Car

battery

cord

DCC-17AW

(1)

Connecting

cord

VCM-920MS

Design

and

specifications

are

subject

change

without

notice.

TRINITRONe

COLOR

SONY.

KV-8AD11/8AD14

RM-792/793

TABLE

CONTENTS

Section

Title

Page

Section

Title

Page

GENERAL

SAFETY

ADJUSTMENTS

.-.:---:--

L415

Identifying

the

Parts

--ccccce

cree

eee

erence

1-2.

Preparing

for

Use

-++++seeeeettt

eet

eter

reese

CIRCUIT

ADJUSTMENTS

1-3.

Watching

Programs

-+++++++2+se0rett

tees

1-4.

Adjusting

Picture

Quality

Abt

Neds

tere

tet

BARN

Set

5-1.

Board

Adjustments

eae

1-5.

Using

Other

Convenient

Features

-----++++++++:

5-2.

Board

Adjustments

-++++++++ttttrrrrstesees

1-6.

Connecting

Video

Equipment

-++++-+-+++++++++>

DIAGRAMS

DISASSEMBLY

6-1.

Block

Diagram

+++

+++ertee

teeter

errr

eee

eens

91...

Cover

Removal’

ssi

set

artiiaee

eenatetet

6-2.

Circuit

Boards

Location

--++*++--

Sear

2-2.

Speaker

and

Board

Removal

-+++--+++*+++++*

6-3.

Printed

Wiring

Boards

and

Schematic

Diagrams

5's

Beans

Reais

yal:

aoe

oon

eneee

6-4.

Semiconductors

«+--+:

ssecee

este

tent

eeneees

9A:

Service

Position:

ins

ioe

ena

Ree

eee

LE.

yPilice

Tahe

Reiioualocaneeubeuesiebauaace

EXPLODED

VIEW

2006-2

¢cs0aeeseecdeesawnane

SELUP

AOAUS

MENTS

ELECTRICAL

PARTS

LIST

---..-------.0---

3-1.

Beam

Landing

--+++++rtersee

eee

rere

eeeees

3-2.

Convergence

<++srrrrrrrrr

eset

eeeee

eens

B23."

SRogus:.

etn

Pasi

teen

tee

eRe

babes

3-4.

Screen

(G2)

and

White

Balance

--++++++++++-++-

CAUTION

SHORT

CIRCUIT

THE

ANODE

THE

PICTURE

TUBE

AND

THE

ANODE

CAP

THE

METAL

CHASSIS,

CRT

SHIELD,

CARBON

PAINTED

THE

CRT,

AFTER

REMOVING

THE

ANODE.

SAFETY-RELATED

COMPONENT

WARNING

COMPONENTS

IDENTIFIED

SHADING

AND

MARK

THE

SCHEMATIC

DIAGRAMS,

EXPLODED

VIEWS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUBLISHED

SONY.

CIRCUIT

ADJUSTMENTS

THAT

ARE

CRITICAL

SAFE

OPERATION

ARE

IDENTIFIED

THIS

MANUAL.

THESE

PRO-

CEOURES

WHENEVER

CRITICAL

COMPONENTS

ARE

REPLACED

IMPROPER

OPERATION

SUSPECTED.

ATTENTION

APRES

AVOIR

DECONNECTE

CAP

L’ANODE,

COURT-CIRCUITER

L’ANODE

TUBE

CATHODIQUE

CELUI

L’ANODE

CAP

CHASSIS

METALLIQUE

L’APPAREIL,

COUCHE

CARBONE

PEINTE

SUR

TUBE

CATHODIQUE

BLINDAGE

TUBE

CATHODIQUE.

ATTENTION

AUX

COMPOSANTS

RELATIFS

SECURITE!!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

TRAME

PAR

UNE

MARQUE

SUR

LES

SCHEMAS

PRINCIPE,

LES

VUES

EXPLOSEES

LES

LISTES

PIECES

SONT

D‘UNE

IMPORTANCE

CRITIQUE

POUR

SECURITE

FONCTIONNEMENT.

LES

REM-

PLACER

QUE

PAR

DES

COMPOSANTS

SONY

DONT

NUMERO

PIECE

EST

INDIQUE

DANS

PRESENT

MANUEL

DANS

DES

SUPPLEMENTS

PUBLIES

PAR

SONY.

LES

REGLAGES

CIRCUIT

DONT

L’IMPOR-

TANCE

EST

CRITIQUE

POUR

SECURITE

FONCTIONNEMENT

SONT

IDENTIFIES

DANS

PRESENT

MANUEL.

SUIVRE

CES

PROCEDURES

LORS

CHAQUE

REMPLACEMENT

COMPOSANTS

CRITIQUES,

LORSQU’UN

MAUVAIS

FONCTIONNE-

MENT

EST

SUSPECTE.

KV-8AD11/8AD14

RM-792/793

{

KV-8AD11/8AD14

RM-792/793

SAFETY

CHECK-OUT

(US

Model

Only)

After

correcting

the

original

service

problem,

perform

the

following

safety

checks

before

releasing

the

set

the

customer:

Check

the

area

your

repair

for

unsoldered

poorly-soldered

connections.

Check

the

entire

board

surface

for

solder

splashes

and

bridges.

Check

the

interboard

wiring

ensure

that

wires

are

“pinched”

contact

high-wattage

resistors.

Check

that

all

control

knobs,

shields,

covers,

ground

straps,

and

mounting

hardware

have

been

replaced.

absolutely

certain

that

you

have

replaced

all

the

insulators.

Look

for

unauthorized

replacement

parts,

par-

ticularly

transistors,

that

were

installed

during

repair.

Point

them

out

the

customer

and

recommend

their

replacement.

$5.

Look

for

parts

which,

though

functioning,

show

obvious

signs

deterioration.

Point

them

out

the

customer

and

recommend

their

replace-

ment.

Check

the

line

cord

for

cracks

and

abrasion.

Recommend

the

replacement

any

such

line

cord

the

customer.

Check

the

condition

the

monopole

antenna

(if

any).

Make

sure

the

end

not

broken

off,

and

has

the

plastic

cap

it.

Point

out

the

danger

impalement

broken

antenna

the

customer,

and

recommend

the

antenna’s

replacement.

Check

the

B+

and

see

they

are

the

values

specified.

Make

sure

your

instruments

are

accurate;

suspicious

your

meter

sets

always

have

low

HV.

Check

the

antenna

terminals,

metal

trim,

“metallized”?

knobs,

screws,

and

all

other

exposed

metal

parts

for

leakage.

Check

leakage

described

below.

Exposed

Metal

Parts

Set

voltmeter

(0.75

V)}

0.15

Earth

Ground

Fig.

Using

voltmeter

check

leakage.

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

as.

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

0.75

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.

HOW

FIND

GOOD

EARTH

GROUND

cold-water

pipe

guaranteed

earth

ground;

the

cover-plate

retaining

screw

most

outlet

boxes

also

earth

ground.

the

retaining

screw

used

your

earth-ground,

verify

that

ground

measuring

the

resistance

between

and

cold-

water

pipe

with

ohmmeter.

The

reading

should

zero

ohms.

cold-water

pipe

not

accessible,

connect

60—100

watts

trouble

light

(not

neon

lamp)

between

the

hot

side

the

receptacle

and

the

retaining

screw.

Try

both

slots,

necessary,

locate

the

hot

side

the

line,

the

lamp

should

light

normal

brilliance

the

screw

ground

potential.

(See

Fig.

Trouble

Light

“-

Ohmmeter

Outlet

Box

Cold-water

Pipe

Fig.

Checking

for

earth

ground.

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Indice

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