Sony Kv-14lt1b User manual

SERVICE

MANUAL

FE+2

cuassis

MODEL

COMMANDER

DEST

CHASSIS

NO.

MODEL

COMMANDER

DEST

CHASSIS

NO.

KV-14LM1B

iss

rrencn

scc-ast0-a

KV-14L

MIE

esses

spanish

sco-ass0-4

KV-14LM1K

ens

or

sco-osio-a

KV-14LM1U

resss

ux

sco-as20.4

KV=14LT1B

ianssr

French

scoasse.

KV-14L

TIE

ienssr

spansn

scoasse-

KV-14LT1K

—sssr

ont

scoasie.

KV=14LT1U

esr

ux

sco.asee

FD

Trinitron

SAAR

Mee

aa

ate

TRINITRON

=

COLOR

TV

SONY.

TABLE

OF

CONTENTS

Section

Title

Page

Specifications

sesestenensenesvenes

3

Connectors

5

Self

Diagnostic

Software

6

1.

GENERAL

Switching

On

the

TV

and

Automatically

Tuning

eaessseeseteereeees

7

Introducing

the

Menu

System

....

8

Teletext

shee

10

Connecting

Optional

Equipment....

10

Using

Optional

Equipment

wees

10

Specifications

seeeetteeneneseseees

lI

Troubleshooting

=

eaeesatseneenereres

1

2.

DISASSEMBLY

2-1,

Rear

Cover

Removal

12

2-2.

APWB

Removal

[1]

12

2-3,

A

PWB

Removal

[2]

12

2-4.

Service Position

12

2-5.

Wire

Dressing

12

2-6.

Picture

Tube

Removal

CAUTION

SHORT

CIRCUIT

THE

ANODE

OF

THE

PICTURE

TUBE

AND

THE

ANODE

CAP

TO

THE

METAL

CHASSIS,

CRT

SHIELD,

OR

THE

CARBON

PAINTED

ON

THE

CRT,

AFTER

REMOVAL

OF

THE

ANODE

CAP.

WARNING

!!

AN

ISOLATION

TRANSFORMER

SHOULD

BE

USED

DURING

ANY

SERVICE

WORK

TO

AVOID

POSSIBLE

SHOCK

HAZARD

DUE

TO

LIVE

CHASSIS,

THE

CHASSIS

OF

THIS

RECEIVER

IS

DIRECTLY

CONNECTED

TO

THE

POWER

LINE.

SAFETY-RELATED

COMPONENT

WARNING

!!

COMPONENTS

IDENTIFIED

BY

SHADING

AND

MARKED

A

ON

THE

SCHEMATIC

DIAGRAMS,

EXPLODED

VIEWS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

FOR

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUBLISHED

BY

SONY.

Section

Title

Page

3.

SET-UP

ADJUSTMENTS

3-1.

BeamLanding

(i

eausaeasenesestseers

14

3-2.

Convergence

15

3-3.

Focus

Adjustment

17

3-4.

Screen

(G2),

White

Balance

17

4.

CIRCUIT

ADJUSTMENTS

4-1.

Electrical

Adjustments

hssseeeeeeeteeees

18

4-2,

TestMode2

racaecaeseseseeeees

20

5.

DIAGRAMS

5-1.

Circuit

Board

Location

22

5-2.

Block

Diagrams

23

5-3.

Schematic

Diagrams

and

Printed

Wiring

Boards

weececseseesseneees

22

*

CBoard

i

aiceeesessesetetees

27

*

ABoard

i

svccesscsseseeetees

29

5-4.

|

Semiconductors

37

5-5,

IC

Blocks

39

6.

EXPLODED

VIEWS

6-1.

Chassis

staeeeestteterteeens

40

6-2.

PictureTube

i

auaeanestseseeseees

41

7.

ELECTRICAL

PARTS

LIST

(i

acseeceesseeseeees

42

ATTENTION

APRES

AVOIR

DECONNECTE

LE

CAP

DE’LANODE,

COURT-CIRCUITER

L’ANODE

DU

TUBE

CATHODIQUE

ET

CELUI

DE

L’ANODE

DU

CAP

AU

CHASSIS

METALLIQUE

DE

L’APPAREIL,

OU AU

COUCHE

DE

CARBONE

PEINTE

SUR

LE

TUBE

CATHODIQUE

OU

AU

BLINDAGE

DU

TUBE

CATHODIQUE.

ATTENTION

!!

AFIN

D’EVITER

TOUT

RISQUE

D’ELECTROCUTION

PROVENANT

D'UN

CHASSIS

SOUS

TENTION,

UN

TRANSFORMATEUR

D'ISOLEMENT

DOIT

ETRE

UTILISE

LORS

DE

TOUT

DEPANNAGE

LE

CHASSIS

DE

CE

RECEPTEUR

EST

DIRECTMENT

RACCORDE

A

LALIMENTATION

SECTEUR.

ATTENTION

AUX

COMPOSANTS

RELATIFS

A

LA

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

TRAME

ET

PAR

UNE

MARQUE

A

SUR

LES

SCHEMAS

DE

PRINCIPE,

LES

VUES

EXPLOSEES

ET

LES

LISTES

DE

PIECES

SONT

D’UNE

IMPOR-

TANCE

CRITIQUE

POUR

LA

SECURITE

DU

FONCTIONNEMENT,

NE

LES

REMPLACER

QUE

PAR

DES

COMPSANTS

SONY

DONT

LE

NUMERO

DE

PIECE

EST

INDIQUE

DANS

LE

PRESENT

MANUEL

OU

DANS

DES

SUPPLEMENTS

PUBLIES

PAR

SONY.

Picture

Tube

ITEM

MODEL

French

PEER

Television

System

B/G/H,

L,I

OIRT

B/G/H,

D/K

Color

System”

PAL,

SECAM

NTSC4.43,

NTSC3.58

(VIDEO

IN)

ss,

Channel

Coverage...

VHF

:

E2-E12,

F2-F10

UHF

:

E21-E69

CABLE

TV

:

S01-S03,

$1-S20,

B-Q

HYPER

:

$21-S41

L

F02-F10,

F21-F69

|

UHF

:

B21-B69

VHF

:

E2-E12

UHF

:

E21-E69

CABLE

TV:

S01-S03,

$1-S20,

B-Q

HYPER

:

$21-S41

VHF

:

E2-E12,

RO1-R12

UHF

:

E21-E69,

R21-R69

CABLE

TV:

S01-S03,

$1-S20,

B-Q

HYPER

:

$21-S41

PAL,

SECAM

NTSC4.43,

NTSC3.58

(VIDEO

IN)

PAL,

SECAM

NTSC4.43,

NTSC3.58

(VIDEO

IN)

PAL,

SECAM

NTSC4.43,

NTSC3.58

(VIDEO

IN)

KV-14LT/LM1E.

|

KVA14UTA/LM1K

|

KV-14LT1/EM1U

Flat

Display

FD

Trinitron

Approx.

37cm

(14

inches)

(Approx.

34

cm

picture

Sound

output

measured

diagonally)

90

degree

deflection

4x6W

(Music

Power)

4x3W

(RMS

Mono)

Input/Output

Terminals

[REAR]

[Power

Requirements

220

-

240V

1:

21-pin:

Euro

connector:

(CENELEC

standard)

Inputs

for

Audio

and

Video

signals.

Inputs

for

RGB.

Dimensions.

:

Approx

393x358x415mm

Outputs

of

TV

Video

and

Audio

:

signals.

Input/Output

Terminals

[FRONT]

[Weight

Approx

11.5kg

2:

Video:

input.

—|

KV-14LT1:

RM-887

Remote

Commander

(1)

phono

jack

Supplied

Accessoties

«|

KV-14LM1:

RM-889

Remote

Commander

(1)

IEC

designated

R6

battery

(2)

2:

Audio

input

KV-14LT1:

Teletext,

Sleep

Timer,

Smartlink,

TV

system

Autodetection

phono

jack

Other

Features

KV-14LM1:

Sleep

Timer,

TV

system

Autodetection

Headphone

jack

1

Remote

control

system

|

Infrared

control

:

3V

de

stereo

mini

jack

Power

requirements.

|

2

batteries

IEC

designation

;

“x

«|

R6

(size

AA)

Design

and

specifications

are

subject

to

change

without

notice.

toe

Nae

|

KvetaLTAB

|

KVAALTIE

|

KVMALTIK

|

KVMALTAU

|

KV-14LMB

|

KVALMME

|

KV-t4LMiK

|

KV-4LMtU

i

[on

|

oFF

|

OFF

ee

OFF

|

ON

|

OFF

or

|

OFF

ie)

—

re

RGB

Priority

Woofer

Box

Scart

1

Scart

2

ie)

a

°

4

Front

in

(

Scart

4

ie)

a

oO

n

.e)

[ore

|

orr

|

or

_|

ee

eae

ee

a

OFF

|

OFF

_

it

OFF

|

Pon

|

ON

TN

a

ee

|

orr

|

ore

|

OFF

|

orr

[or

|

OFF

Projector

|

orr

|

orr

|

OFF

AKBint6:9mode

|

OFF

|

OFF

|

OFF

Norm

B/G

ee

Norm

|

ON

[Orr

|

OFF

Norm

Dik

|

oN

[ofr

[|

oN

|

orr

|

orr

|

OFF

|

Pp

ON]

OFF

|

Orr

|

Orr

|

orr

|

OFF

|

orF

|

OFF

|

OFF

ce

|

orF

|

orr

|

rr

=

Zz

9/o

z

an

Norm

SAT

Teletext

Nicam

Stereo

fe)

WARNING

(UK

Models

only)

The

flexible

mains

lead

is

supplied

connected

to

a

B.S.

1363

fused

plug

having

a

fuse

of

5

AMP

rating.

Should

the

fuse

need

to

be

replaced,

use

a

5

AMP

FUSE

approved

by

ASTA

to

BS

1362,

ie

one

that

carries

the

mark.

How

to

replace

the

fuse.

Open

the

fuse

compartment

with

a

screwdriver

blade

and

replace

the

fuse.

IF

THE

PLUG

SUPPLIED

WITH

THIS

APPLIANCE

IS

NOT

SUITABLE

FOR

THE

OUTLET

SOCKETS

IN

YOUR

HOME,

IT

SHOULD

BE

CUT

OFF

AND

AN

APPROPRIATE

PLUG

FITTED.

THE

PLUG

SEVERED

FROM

THE

MAINS

LEAD

MUST

BE

DESTROYED

AS

A

PLUG

WITH

BARED

WIRES

1S

DANGEROUS

IF

ENGAGED

IN

A

LIVE

SOCKET.

FUSE

When

analternative

type

of

plug

is

used,

it

should

be

fitted

with

a

5

AMP

FUSE,

otherwise

the

circuit

should

be

protected

by

a

5

AMP

FUSE

atthe

distribution

board.

21:

connector

Rear

Connection

Panel

Front

Connection

Panel

Pinne

[a2

[#]

sonst]

Signal

ive

Audio

output

B

Standard

level

:

0.5V

rms

(right)

Output

impedence

:

Less

than

1kohm*

Audio

output

B

Standard

level

:

0.5V

rms

(right)

Output

impedence

:

More

than

10kohm*

Audio

output

A

Standard

level

:

0.5V

rms

(left)

Output

impedence

:

Less

than

1kohm*

P

4

Jo

foo

|seudteis

PT

[Joo

[o

[Sreina

ue

Audio

input

A

Standard

level

:

0.5V

rms

O

(left)

Output

impedence

:

More

than

10kohm*

|

7

[O[@[@

[Ble

input

0.7

+/-

3dB,

75

ohms

positive

High

state

(9.5-12V)

:

Part

mode

Function

select

Low

state

(0-2V)

:

TV

mode

{AV

control)

Input

impedence

:

More

than

10K

ohms

Input

capacitance

:

Less

than

2nF

Ground

(green)

Green

signal

:

0.7

+/-

3dB,

75

ohms,

e

positive

a

(ee)

(e)

ea

ae

eee)

|

13

Jolofo]

Ground

(red)

|

14 [0

JO

[©

[round

(blanking)

Red

input

0.7

+/-

3dB,

75

ohms,

positive

(S

signal

Chroma

input)

0.3

+/-

3dB,

75

ohms,

positive

Blanking

input

(Ys

signal)

High

state

(1-3V)

Low

state

(0-0.4V)

Input

impedence

:

75

ohms

Ground

(video

output)

Ground

(video

input)

Video

output

4V

+/-

3dB,

75o0hms,

positive

sync

0.3V

(-3+10dB)

1V

+/-

3dB,

75ohms,

positive

sync

0.3V

(-3+10dB)

Video

input

1V

+/-

3dB,

750hms,

positive

sync

0.3V

Y

(S

signal)

(-3+10dB)

Common

ground

(plug,

shield)

©

Connected

@

Not

Connected

(open)

*

at

20Hz

-

20kHz

Video

input

FE-2

SELF

DIAGNOSTIC

SOFTWARE

The

identification

of

errors

within

the

FE-2

chassis

is

triggered

in

one

of

two

ways

:-

1:

Busy

or

2:

Device

failure

to

respond

to

IIC.

In

the

event

of

one

of

these

situations

arising

the

software

will

first

try

to

release

the

bus

if

busy

(Failure

to

do

so

will

report

with

a

continuous

flashing

LED)

and

then

communicate

with

each

device

in

turn

to

establish

if

a

device

is

faulty.

If

a

device

is

found

to

be

faulty

the

relevant

device

number

will

be

displayed

through

the

LED

(Series

of

flashes

which

must

be

counted)

See

table

1.,

non

fatal

errors

are

reported

using

this

method.

Each

time

the

software

detects

an

error

it

is

stored

within

the

NVM.

See

Table

2.

Table

1

Error

Message

No

error

Reserved

OCP

(

Over

Current

Protection

)

Reserved

No

Vertical

Sync

Unstable

AKB

IC

bus

clock

and/or

data

lines

low

at

power

on

NVM

no

IIC

bus

acknowledge

at

power

on

Not

Used

Tuner

no

acknowledge

at

power

on

Not

used

Jungle

controller

no

acknowledge

at

Power

ON

Flash

Timing

Example

:

e.g.

error

number

3

StBy

LED

JA

=

AN

How

to-enter

into

Table

2

1.

Turn

on

the

main

power

switch

of

the

TV

set

and

enter

into

the

‘Stanby

Mode’.

2.

Press

the

following

sequence

of

buttons

on

the

Remote

Commander.

(ON

SCREEN

(DIGIT

5)

DISPLAY)

(VOLUME

-)

(Ty)

3.

The

following

table

will

be

displayed

indicating

the

error

count.

Table

2

ERROR

MENU

E02

E03

E04

E05

E06

E07

E08

E09

E10

E11

oooo0o0o0o0c00c°o°o

WORKING

TIME

HOURS

MINUTES

Note:

To

clear

the

error

count

data

press

‘80’

on

the

Remote

commander.

_!

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Ww

2

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11

SECTION

2

DISASSEMBLY

2-1.

Rear

Cover.

Removal

2-2.

A

Board

PWB

Removal

[

Step

1]

=~

~

Remove

screw.

Release

the

mains

power

cable

from

its

securing

posts.

Remove

the

rear

cover

fixing

screws

indicated.

Pull

the

rear

cover

away

from

the

front

beznet

until

clear

of

chassis.

Note

:

Use

a

cross-head

screwdriver

with

a

blade

length

of

at

least

200mm.

RemoveFBT

>

2-3,

A.

Board

PWB

Removal

[

Step

2

]

slipper

bracket.

7

2-5.

Wire:Dressing

Lis

Release

the

2

securing

clips

located

at

either

side

of

the

chassis

and

slide

the

PWB

clear

of

the

bracket.

2-4.

Service

Position

Place

the

A

Board

PWB

in

the

position

indicated

to

carry

out

servicing.

Ensure

that

all

wires

do

not

touch

heat-sinks

and

high

temperature

hot

spots.

All

wires

must

be

kept

at

a

minimum

distance

of

20mm

away

from

the

EHT

lead.

12

2-6.

Picture

Tube

Removal

WARNING:

BEFORE

REMOVING

THE

ANODE

CAP

High

voltage

remains

in

the

CRT

even

after

the

power

is

disconnected.

To

avoid

electric

shock,

discharge

CRT

before

attempting

to

remove

the

anode

cap.

Short

between

anode

and

CRT

coated

earth

ground

strap.

Coated

Earth

[>

7D

Ground

Strap

C

Discharge

the

anode

of

the

CRT

and

remove

the

anode

cap.

2.

Release

the

EHT

lead

from

its

CRT

support

bracket.

Unplug

all

interconnecting

leads

from

the

Deflection

yoke,

degaussing

coils

and

CRT

grounding

strap.

Remove

the

C

Board

from

the

CRT.

Remove

the

chassis

assembly.

Loosen

the

Deflection

yoke

fixing

screw

and

remove.

Place

the

set

with

the

CRT

face

down

on

a

cushion.

Unscrew

the

four

CRT

fixing

screws

[

located

on

each

CRT

corner

]

and

remove

the

CRT.

9.

Remove

the

Degaussing

Coils.

Remove

the

CRT

grounding

strap

and

spring

tentioners.

[Take

care

not

to

handle

the

CRT

by

the

neck.]

w

COINS

Removal!

of

the:

Anode-Cap

*

REMOVING

PROCEDURES.

Anode

button

qd)

Turn

up

one

side

of

the

rubber

cap

in

@)

Using

a

thumb

pull

up

the

rubber

cap

GB)

When

one

side

of

the

rubber

cap

is

the

direction

indicated

by

the

arrow

@)

firmly

in

the

direction

indicated

by

the

separated

from

the

anode

button,

the

arrow

(6)

anode-cap

can

be

removed

by

turning

up

the

rubber

cap

and

pulling

it

up

in

How

to

handle

the

Anode-Cap

the

direction

of

the

arrow

©)

1.

To

prevent

damaging

the

surface

of

the

anode-cap

do

not

use

sharp

materials.

2.

Do

not

apply

too

great

a

pressure

on

the

rubber,

as

this

may

cause

damage

to

the

anode

connector.

3.

A

metal

fitting

called

a

shatter

hook

terminal

is

fitted

inside

the

rubber

cap.

4.

Do

not

turn

the

rubber

foot

over

excessively,

this

may

cause

damage

if

the

shatter

hook

sticks

out.

13

SECTION

3

SET-UP

ADJUSTMENTS

*

When

complete

readjustment

is

necessary

or

a

new

picture

Carry

out

the

adjustments

in

the

following

order

:

tube

is

installed,

carry

out

the

following

adjustments.

3-1.

Beam

Landing.

ee

:

3-2.

Convergence.

¢

Unless

there

are

specific

instructions

to

the

contrary,

carry

3-3

Rosas

out

these

adjustments

with

the

rated

power

supply.

3-

4

White

Balance.

*

Unless

there

are

specific

instructions

to

the

contrary,

set

the

controls

and

switches

to

the

following

settings

:

Note

:

Test

equipment

required.

1.

Color

bar/pattern

generator.

Contrast

assssseeeeesseeees

80%

[or

remote

control

normal]

2.

Degausser.

3:

Oscilloscope.

Brightness

o..ssseseeeseseees

50%

4

Digital

multimeter.

a

Preparation:

Fig.

3-2.

Purity

1.

In

order

to

reduce

the

influence

of

geomagnetism

on

the

set’s

picture

tube,

face

it

in

an

easterly

or

westerly

direction.

2.

Switch

on

the

set’s

power

and

degauss

with

the

degausser.

3-1.

Beam

Landing

1.

Input

an

all

white

signal

from

the

pattern

generator.

Set

the

Contrast

and

Brightness

to

normal.

Set

the

pattern

generator

raster

signal

to

Red.

Move

the

deflection

yoke

forward

and

adjust

with

the

purity

control

so

that

the

Red

is

at

the

centre

and

the

Blue

and

Green

take

up

equally

sized

areas

on

each

side

of

the

screen.

[See

Fig.3-1

-

3-3].

4.

Move

the

deflection

yoke

backwards

and

adjust

so

that

the

entire

screen

becomes

Red.

[See

Fig.3-1]

Switch

the

raster

signal

to

Blue,

then

to

Green

and

verify

the

condition.

6.

When

the

position

of

the

deflection

yoke

has

been

determined,

fasten

the

deflection

yoke

with

the

screws.

7.

Ifthe

beam

does

not

land

correctly

in

all

the

corners,

use

a

magnet

to

correct

it.

[See

Fig.3-4]

Fig.

3-3.

Wn

ms

Disk

magnets

or

rotatable

disk

magnets

correct

these

areas

(a-d)

Purity

control

corrects

this

area

Fig.

3-1.

eauson:

Disk

Magnets

‘a

High

voltages

are

present

on

the

Deflection

yoke

terminals

-

take

care

when

handling

the

Deflection

yoke

whilst

carrying

Fig.3-4

out

adjustments.

14

3-2.

Convergence

4.

Ifthe

VSTAT

magnet

is

moved

in

the

direction

of

the

(a)

and

(b)

arrows,

the

Red,

Green

and

Blue

points

move

as

F

indicated

below.

Preparation:

Jee

.

©

®

@

Before

starting

this

adjustment,

adjust

the

focus,

horizontal

size

and

vertical

size.

|

B

|

@

Minimize

the

Brightness

setting.

A

@

Input

a

dot

pattern

from

the

pattern

generator.

Horizontal.and

Vertical

Static

Convergence

R

G

B

®

H.STAT

V.STAT

convergence

Vertical

Static

Magnet

control

R

G

B

RV5375

(H

STAT)

H

STAT

Convergence

(on

mount

side)

Fig.3-5

1.

[Moving

horizontally],

adjust

the

H.STAT

control

so

that

the

Red,

Green

and

Blue

points

are

on

top

of

each

other

at

the

centre

of

the

screen.

R

3

&

a

=

2.

[Moving

vertically],

adjust

the

VSTAT

magnet

so

that

the

o

=_>

——~——

&

Red,

Green

and

Blue

points

are

on

top

of

each

other

at

the

centre

of

the

screen.

3.

Ifthe

H.STAT

variable

resistor

is

unable

to

bring

the

Red,

Green

and

Blue

points

together

at

the

centre

of

the

screen,

adjust

the

horizontal

convergence

with

the

H.STAT

variable

resistor

and

the

V.STAT

magnet

in

the

manner

indicated

R

below.

:

{In

this

case,

the

H.STAT

variable

resistor

and

the

V

STAT

magnet

influence

each

other].

Operation

of

the:

BMC

(Hexapole)

magnet.

@

Tilt

the

VSTAT

magnet

and

adjust

the

static

convergence

by

opening

or

closing

the

V.STAT

magnet.

The

movement

of

the

magnets

interact

with

each

other

and

so

the

respective

dot

position

should

be

monitored

while

carrying

out

this

adjustment.

Use

the

H.STAT

VR

to

adjust

the

Red,

Green

and

Blue

dots

so

that

they

coincide

at

the

centre

of

the

screen

(by

moving

the

dots

in

the

horizontal

direction).

15

Geometry

Adjustment.

Preparation:

Before

starting

this

adjustment,

adjust

the

horizontal

and

vertical

static

convergence.

Remove

the

deflection

yoke

spacer.

Tilt

the

deflection

yoke

as

indicated

in

the

figure

below

and

optimise

the

geometry.

Tilting

the

DY

Up

and

Down

will

balance

the

upper

and

lower

adjustment.

Tilting

the

DY

Left

and

Right

will

balance

the

H-Trap

adjustment.

Re-install

the

deflection

yoke

spacer.

=

Tilt

Direction

HTIL

Adjustment

\

|

/

Deflection

Yoke

ae

7

ei

i

ee

Vv

TLH

pieces

HTIL

correction

can

be

performed

by

adding

a

TLH

correction

assembly

to

the

Deflection

yoke.

16

.

Install

the

permalloy

assembly

YCH

Adjustment

Een

Screen:

Corner

Convergence

If

you

are

unable

to

adjust

the

corner

convergence

properly,

this

can

be

corrected

with

the

use

of

permalloy

magnets.

for

the

area

that

needs

correcting.

Permalloy

Assy

X-4387-214-1

d

Convergence

adjustment

with

permalloy

Layout

of

each

control

Be

ares

3-4.

Screen

(G2),

White

Balance

[Adjustment

in

the

service

mode

using

the

remote

commander]

G2

adjustment

1.

Input

a

dot

signal

from

the

pattern

generator.

Set

the

Picture,

Brightness

and

Colour

to

minimum.

Apply

175V

DC

from

an

external

power

supply

to

the

R,

G

and

B

cathodes

of

the

CRT.

4.

Whilst

watching

the

picture,

adjust

the

G2

control

[SCREEN]

located

on

the

Flyback

Transformer

to

the

point

just

before

the

flyback

return

lines

disappear.

bale

bed

White

balance

adjustment

for

TV

mode

Input

an

all-white

signal

from

the

pattern

generator.

2.

Enter

into

the

‘Service

Mode’

by

pressing

‘TEST’,

‘TEST’

and

‘MENU’

on

the

Service

Commander.

3.

Select

‘Service’

from

the

on

screen

menu

display

and

press

the

right

arrow

button

on

the

remote

commander.

4.

The

‘Service’

menu

will

appear

on

the

screen.

Set

the

‘Contrast’

to

MAX.

6.

Set

the

‘R-Drive’

to

25.

7.

Adjust

the

‘G-Drive’

and

the

‘B-Drive’

so

that

the

white

balance

becomes

optimum.

8.

Press

the

‘OK’

button

to

write

the

data

for

each

item.

9.

Set

the

‘Contrast’

to

MIN.

10.

Adjust

the

‘G-Cutoff’,

and

the

‘R-Cutoff’

with

the

left

and

right

buttons

on

the

remote

commander

so

that

the

white

balance

becomes

optimum.

11.

Press

the

‘OK’

button

to

write

the

data

for

each

item.

a

1.

Receive

a

television

broadcast

signal.

2.

Normalize

the

picture

setting.

3.

Adjust

the

focus

control

located

on

the

flyback

transformer

to

obtain

the

best

focus

at

the

centre

of

the

screen.

Bring

only

the

centre

area

of

the

screen

into

focus,

the

magenta-ring

appears

on

the

screen.

In

this

case,

adjust

the

focus

to

optimize

the

screen

uniformly.

Focus

Screen

17

SECTION

4

circuit

ADJUSTMENTS

4-1.

Electrical

Adjustments

Service

adjustments

to

this

model

can

be

performed

using

the

supplied

Remote

Commander

RM-887(14LT1)

or

RM-889(14LM1).

How

to

enter

into

the

Service

Mode

1.

Turnon

the

main

power

switch

and

enter

into

the

stand-by

mode.

2.

Press

the

following

sequence

of

buttons

on

the

Remote

Commander.

bo

5

elt

IC

(ON

SCREEN

{OIGIT

5)

(VOLUME

+)

{TV)

DISPLAY)

‘TT—’

will

appear

in

the

upper

right

corner

of

the

screen.

Other

status

information

will

also

be

displayed.

3.

Press

‘MENU’

on

the

remote

commander

to

obtain

the

following

menu

on

the

screen.

Geometry

Service

Design

Status

IF

adjust

Error

Menu

FE-2

Mono

v1.12

Factory

data

00h

4.

Move

to

the

corresponding

adjustment

item

using

the

up

or

down

arrow

buttons

on

the

Remote

Commander.

5.

Press

the

right

arrow

button

to

enter

into

the

required

menu

item,

6.

Press

the

‘Menu’

button

on

the

Remote

Commander

to

quit

the

Service

Mode

when

all

adjustments

have

been

completed.

Note:

*

Before

performing

any

adjustments

ensure

that

the

correct

model

has

been

selected

in

the

‘Model

Setting’

menu.

*

After

carrying

out

the

service

adjustments,

to

prevent

the

customer

accessing

the

‘Service

Menu’

switch

the

TV

set

OFF

and

then

ON.

18

SERVICE

Offset-R

Offset-G

R-Drive

G-Drive

B-Drive

Peak-Freq

Luma-Delay

Sco

White-Peak

Subcont

Subright

Subcol

Subsharp

Br

OSD

Br

TXT

GEOMETRY

Left-HBIk

Right-HBlk

V-Angle

V-Bow

H-Centre

H-Size

Pin-Amp

U-Corner-Pin

L-Corner-Pin

Phase

V-Linearity

V-Size

S-Correction

V-Centre

V-Zoom

ERROR

MENU

£02

ocp

(0,

255)

E03

OVP

N/A

(0,

255)

E04

VSYNC

(0,

255)

E05

IKR

(0,

255)

E06

uC

(0,

255)

£07

NVM

(0,

255)

E08

JUNGLE

(0,

255)

E09

TUNER

(0,

258)

E10

SOUNDP

(0,

255)

E11

BV

(0,

255)

eooococoooece

WORKING

TIME

HOURS

MINUTES

IF

ADJUST

AGC

Adjust

(0,

255)

Automute

(0,

255)

Audio

Gain

(0,

255)

L

Gating

(0,

255)

Sub

Brightness

Adjustment

1.

Input

a

Monoscope

pattern.

2.

Press

‘TEST’

13

on

the

Remote

Commander.

3.

Adjust

the

‘Sub-Brightness’

data

so

that

there

is

barely

a

difference

between

the

0

IRE

and

10

IRE

signal

levels.

Sub.Contrast'

Adjustment

1.

Input

a

video

signal

that

contains

a

small

100%

white

area

ona

black

background.

2.

Connect

an

digital

voltmeter

to

10

of

J701

[C

Board].

3.

Adjust

the

Sub-Contrast

[‘TT11’]

to

obtain

a

voltage

of

95

+0,-

SV.

Sub

Colour

Adjustment

[

Print

side

of

A

board

]

Receive

a

PAL

colour

bar

signal.

Connect

an

oscilloscope

to

3

of

CN504

[A

Board].

Enter

into

the

‘Service’

service

menu.

Adjust

the

‘Sub

Colour’

data

so

that

the

Cyan,

Magenta

and

Blue

colour

bars

are

of

equal

levels

as

indicated

below.

Note:

Ensure

that

no

signal

is

applied

to

the

Antenna

socket

while

carrying

out

the

following

IF

adjustments.

eV.

Ng

Deflection

System

Adjustment

1,

Enter

into

the

‘Geometry’

service

menu.

2.

Select

and

adjust

each

item

in

order

to

obtain

the

optimum

image.

Se

5

_

Same

Level

GEOMETRY

eee

I

Left-HBIk

|

Right-HBlk

V-Angle

V-Bow

H-Centre

H-Size

B-Out

Waveform

Pin-Amp

Tuner

AGC

Adjustment

U-Corner-Pin

L-Corner-Pin

Phase

1.

Setthe

“AGC

adjust”

register

value

:

V-Linearity

V-Size

+

For

destination

France

set

the

value

to

6.

S-Correction

V-Centre

+

All

other

destinations

set

the

value

to

0.

V-Zoom

2.

Receive

a

signal

of

64dBuV

/

75

ohm

terminated

[62dBuV

/

75

ohms

for

B

model]

via

the

tuner

antenna

socket.

3.

Connect

a

voltmeter

to

pin]

of

TUIOI

[print

side

of

A

Board]

or

to

the

AGC

of

CNOO1

[mount

side

of

A

Board].

Confirm

that

the

AGC

voltage

is

3.5volts

+/-

0.3

volts.

If

adjustment

is

required,

enter

into

the

‘Test

Menu’.

Select

the

‘AGC

Adjust’

menu

item.

Adjust

the

data

using

the

left

and

right

arrow

buttons

on

the

SON

Remote

Commander

to

obtain

a

voltage

of

3.5V

+/-

0.3V.

19

|

QHUUUOUOMML

I

DAC

B

GUM

ers

4-2.

TEST

MODE

2:

Is

available

by

pressing

the

‘TEST’

button

twice,

OSD

‘TT’

appears.

The

functions

described

below

are

available

by

selecting

the

two

V

LIN

numbers.

To

release

the

‘Test

mode

2’,

press

00,

10,

20...

twice

or

switch

the

TV

set

into

Stand-by

mode.

In

‘TT

Menu’

mode,

it

is

possible

to

remove

the

Menu

from

the

screen

by

pressing

the

Speaker

Off

button

once.

Pressing

the

Speaker

OFF

button

a

second

time

will

S

CORRECTION

cause

the

Menu

to

reappear.

The

function

is

kept

even

when

the

menu

is

not

displayed

on

screen

!!.

V

CENTRE

Set

speaker/headphone

Volume

to

80%

H

SIZE

i=)

7

[Ageing

mode

SSCS

|

Sub

colour

adjustment

—————SSSSSCS—~™

AMP

CORNER

z

4

Re-initialise

NVM

(Prog

59)

cm

V

ANGLE

wo

a

Text

H

Position

adjustment

a

aT

D

nN

woloi~

Oo;

20

Sony KV-14LT1B User manual

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