Sony Bvf-v20w User manual

SONY.

ELECTRONIC

VIEWFINDER

BVF-V20W

BVF-V20WCE

MAINTENANCE

MANUAL

2nd

Edition

(Revised

1)

Serial

No.

11261

and

Higher

(BVF-V20W)

Serial

No.

42441

and

Higher

(BVF-V2OWCE)

ASE

LOVLay

Wi,

V-EARBATCT.

Ha,

LOVGMAP

WARRANT

RECRT,

AR,

BERETS

ERBCAR,

AX

HRICDEMSTEMSVET.

FR

ESWSED,

V-ERBL-AY

PF

ERUIERMAOSTRA

SES,

A\WARNING

This

manual

is

intended

for

qualified

service

personnel

only.

To

reduce

the

risk

of

electric

shock,

fire

or

injury,

do

not

perform

any

servicing

other

than

that

contained

in

the

operating

instructions

unless

you

are

qualified

to

do

so.

Refer

all

servicing

to

qualified

service

personnel.

A\WARNUNG

Die

Anleitung

ist

nur

fiir

qualifiziertes

Fachpersonal

bestimmt.

Alle

Wartungsarbeiten

dirfen

nur

von

qualifiziertem

Fachpersonal

ausgefihrt

werden.

Um

die

Gefahr

eines

elektrischen

Schlages,

Feuergefahr

und

Verletzungen

zu

vermeiden,

sind

bei

Wartungsarbeiten

strikt

die

Angaben

in

der

Anleitung

zu

befolgen.

Andere

als

die

angegeben

Wartungsarbeiten

diirfen

nur

von

Personen

ausgefiihrt

werden,

die

eine

spezielle

Befahigung

dazu

besitzen.

4.

AVERTISSEMENT

Ce

manual

est

destiné

uniquement

aux

personnes

compétentes

en

charge

de

l’entretien.

Afin

de

réduire

les

risques

de

décharge

électrique,

d’incendie

ou

de

blessure

n’effectuer

que

jes

réparations

indiquées

dans

le

mode

d’emploi

a

moins

¢’étre

qualifié

pour

en

effectuer

d'autres.

Pour

toute

réparation

faire

appel

a

une

personne

compétente

uniquement.

-

X-RAY

RADIATION

WARNING

Be

sure

that

parts

replacement

in

the

high

voltage

block

and.

adjustments

made

to

the

high

voltage

circuits

are

carried

out

precisely

in

accordance

with

the

procedures

given

in

this

manual.

BYF-VaoWvZOWCE

Table

of

Conients

Manual

Structure

Purpose

of

this

manual

....

Contents

....

Relative

manual

1.

1-1.

1-2.

1-3,

1-4,

1-5.

»

1.

€)

Service

Overview

Location

of

Printed

Circuit

Boards

....

Periodic

Replacement

Parts.....

Connector

Input/Output

Signals.

Cleaning

...

14-1.

Cleaning

of

Viewfinder

..

142.

Care

After

Using

at

Special

Environment

Replacement

of

CRT...

Disconnecting/Connecting

Flexible

Card Wire

Notes

on

Spare

Parts

Electrical

Alignment

Electrical

Adjustment

Using

a

Camcorder

2-1-1.

Notes

on

Adjustment.

2-1-2,

Equipment/Fixtures

2-1-3,

Connections...

2-1-4,

Settings

for

Adjustment.

2-1-5.

_

Extending

Viewfinder

...

2-1-6.

Vertical

Hold

Adjustment

2-1-7,

Horizontal

Hold

Adjustment

2-1-8.

Sub

Contrast

Adjustment

..

2-1-9.

Bright

Set

Adjustment

2-41-10,

Focus

Adjustment...

2-I-11,

Heater

Voltage

Adjustment

2-1-12,

Picture

Frame

Adjustment.....

2)

2-2.

Electrical

Adjustment

Using

a

VF

Checker

2-2-1.

2-2-2,

2-2-3,

2-2-4,

2-2-5.

2-2-6,

2-2-7.

2-2-8,

2-2-9,

2-2-10.

2-2-11.

2-2-12.

Notes

on

Adjustment

Equipment/Fixtures

Connections

Settings

for

Adjustment.

Extending

Viewfinder

Vertical

Hold

Adjustment

..

Horizontal

Hold

Adjustment

Sub

Contrast

Adjustment

Bright

Set

Adjustment...

Focus

Adjustment...

Heater

Voltage

Adjustmen

Picture

Frame

Adjustment...

..2-11

(BE)

3.

Spare

Parts

3-1.

Exploded

Views

....

3-2.

Electrical

Parts

List

...

3-3,

Supplied

Accessories

...

4.

Semiconductor

Assignments

5.

Diagrams

and

Board

Layouts

BVF-V20WN20WCE

Manual

Structure

Purpose

of

this

manual

This

manual

is

the

maintenance

manual

for

Electronic

Viewfinder

BVF-V20W/

V20WCE.

This

manual

describes

the

information

items

necessary

when

the

unit

is

supplied

and

installed,

items

that

premise

the

service

based

on

the

components

parts

such

as

alignment,

schematic

diagrams,

board

layouts

and

spare

parts

lists,

assuming

use

of

system

and

service

engineers.

Contents

‘This

followings

are

summaries

of

the

each

section

for

understanding

the

manual,

Section

1

Service

Overview

Describes

information

about

board

locations,

connector

input/output

signals,

cleaning,

replacement

of

CRT.

Section

2

Electrical

Alignment

Describes

general

information

for

electrical

adjustments

and

the

adjustments

procedures

of

this

unit.

Section

3

Spare

Parts

Describes

parts

list,

exploded

views,

supplied

accessories

list

used

in

the

unit.

Section

4

Semiconductor

Assignments

Describes

function

diagrams

and

names

of

semiconductor

used

in

the

unit.

Section5

Diagrams

and

Board

Layouts

Describes

overall

block

diagram,

frame

wiring

and

board

layouts

for

every

circuit

board.

Relative

manual

Besides

this

maintenance

manual

the

following

manual

is

available

for

this

unit.

+

Operation

Manual

(Supplied

with

this

unit)

‘This

manual

is

necessary

for

application

and

operation

of

this

unit.

VF-VEOWNVZOWICE

3(E)

Section

1

Service

Overview

1-1.

Location

of

Printed

Circuit

Boards

1-3.

Connector

Input/Output

Signals

VF

(20P

MALE)

VR-226

board

AT

board

oS

(External

view)

No.

Signal

VO

Specifications

!

LP-101

board

1

VTR

SAVE

IND

IN

GND:Indicator

lights

OPEN:Indicator

goes

out

2

ABNORMAL

IND

IN

GND:Indicator

fights

OPEN:

Indicator

goes

out

1-2.

Periodic

Replacement

Parts

3

16:9

MODE

IN

GNO:16:9

OPEN4:3

Parts

listed

below

are

periodic

replacement

parts.

They

are

4

REC

(L)

IND

IN

9

V:indicator

lights

subject

to

cracks

with

the

lapse

of

time.

Check

sometimes

GND

or

OPEN:inglestor

goes

out

by

visual,

and

replace

as

necessary.

5

NC

:

6

CCIRIEIA

IN

9.3V:CCIR

GND:EIA

Name

Sony

Part

No.

7

DISPLAY

OUT

ON:OPEN

MIC

cushion,

rubber

3-692-138-0X

**

OFEGND,

5)

3-723-079-0X

8

GTALLY

IN

5

V:lndicator

lights

Eye

cup

(S)

GND

or

OPEN:Incicator

goes

out

8

Ne

10

NG

11

ZEBRA

QUT

ON:GND

i

OFF5V

12

VEVIDEO(X)

IN

1.0Vp-p

Pe

Zi=750

Shion,

MIC

cushion,

rubber

4g

NG,

14

NC

15

NC

;

%1

It

is

recommended

that

the

MIC

cushions

are

replaced

16

BATTIND

IN

5

Vindicator

fights

in

pairs.

In

this

case,

please

order

two

pieces.

GND

or

OPEN:Indicator

goes

out

7

17

TALLY

IND

IN

9

Vindicator

lights

:

GND

of

OPEN:

Indicator

goes

out

18

493V(VF)

IN,

REG+9.3V

,

19

GND

20

NC

BYF-V20WNV20WCE

This

unit

normally

operates

with

the

above

input

signals.

Cameras

described

in

this

manual

can

output

the

signals

satisfying

the

specifications.

1-1

(E)

4-4,

Cleaning

1-4.

Cleaning

1-4-1.

Cleaning

of

Viewfinder

By

extracting

VF

tube

sub

assembly,

lens

and

MC

protec-

tor

can

be

easily

cleaned.

And

also

dust

on

the

CRT

surface

or

mirror

can

be

easily

cleaned

off.

1.

Torn

the

hold

ring

to

the

left

and

extract

the

VF

tube

sub

assembly.

2.

Detach

the

eyecup.

3.

Remove

the

MC

protector

with

the

filter

holder.

Clean

the

lens

and

MC

protector

with

a

commercially

available

camera

lens

cleaner,

Blow

off

dust with

a

blower

carefully

so

as

not

to

flaw

the

mirror.

5,

After

the

cleaning

is

completed,

install

by

reversing

the

preceding

steps.

Align

red

lines

of

the

VF

tube

and

VF

tube

sub

assembly

when

inserting,

and

turn

the

hold

ring

to

the

right

until

it

locks.

[Note

}

*

Do

not

use

any

type

of

solvent,

such

as

alcohol,

benzine

or

thinner

to

remove

stains.

*

Be

sure

to

attach

the

eyecup

to

the

VF,

or

the

MC

protector

may

come

off.

+

To

protect

the

viewfinder

lens

from

drops,

put

the

MC

protector

in

the

filter

holder

and

attach

the

eyecup

securely,

—

Hold

ring

Align

red

lines

MC

protector

VF

tube

sub

a,

assembly

CS-

3)

Filter

holder

ey

Eyecup

1-2

(E)

1-4-2.

Care

After

Using

at

Special

Environment

It

is

recommended

to

check

the

following

items

after

gathering

the

news

at

seaside,

dust

area

or

spa.

1,

Clean

off

sand

and

other

dust

in

the

wnit

carefully.

2.

Do

not

allow

sat

in

seawater

or

sulfur

in

spa

to

contact

a

not-painted

surface

of

the

cabinet.

They

may

cause

to

corrode.

Clean

with

alcohol

immediately

if

contacted.

3.

Clean

the

connection

surface

of

connectors.

4.

Carry

out

the

common

operation

check.

BVF-v2oWN20WCE

1-5.

Replacement

of

CRT

1.

Loosen

the

screw

of

the

MIC

clamp

and

open

the

MIC

clamp.

2.

Remove

the

two

screws

(K2.6

x

5).

3.

Remove

the

thrée

hexagonal

socket

bolts

(2.6

x

6)

and

remove

the

upper

chassis.

4,

Disconnect

the

flexible

card

wire

on

the

VR-226

board.

(How

to

disconnect

the

flexible

card

wire,

refer

to

Section

1-6.)

aL

|

VR-226

ae

ere

Bolt,

hexagonal

socket

2.6

x

6

5,

Disconnect

the

three

connectors

CN2,

CN4

and

CNS

on

the

VF-67

board,

and

anode

cable.

Anode

cable

VF-67

board

BVF-v20w/v20WCE

4-5.

Replacement

of

CRT

6.

Remove

the

three

screws

and

remove

the

CRT

from

the

VF

tube

assembly.

7.

Remove

the

CRT

tube

from

the

CRT.

8.

Remove

the

four

screws

(K2

x

5)

and

remove

the

mask

spacer.

9,

Disconnect

the

connector

CN21

on

the

LP-101

board.

1-3

(E)

1-5,

Replacement

of

CRT

10.

Install

a

new

CRT

in

the

reverse

procedures

of

removal.

When

installing

the

CRT,

route

the

harness

using

the

following

procedure.

The

following

figures

show

the

opposite

side

of

the

CRT

shown

in

the

figures

of

the

removal

proce-

dure.

(1)

Anode

cable

Connect

the

anode

cable.

Anode

cable

Flexibie

card

wire’

VR-226

board

L

Tuming

the

VR-226

board

180°,

attach

it

to

the

cabinet,

Bite

the

anode

cable

between

the

flexible

card

wire

and

the

VR-226

board

to

secure

it.

Flexible

card

wire

VF-67

board

4-4

(E)

BYF-V20WIV20WCE

1-8.

Replacement

of

CRT

(2)

Hamess

to

connector

CN2

(8-core

harness)

Connect

the

8-core

harness

to

connector

CN2

on

the

VF-67

board

through

the

upper

side

of

the

anode

cable,

8-core

harness:

Flexible

card

wire

VF-67

board

(3)

Harness

to

connector

CNS

(CRT

hamess)

Connect

the

CRT

harness

(blue,

orange,

brown,

red)

to

connector

CN5

on

the

VF-67

board,

and

fix

the

CRT

harness

to

the

portion

of

the

CRT

neck

using

a

binding

yarn.

Flexible

card

wire

CRT

harness

Binding

yarn

‘BUF-VOOWIVZ0WCE

1-5.

Replacement

of

CRT

(4)

Harness

to

connector

CN4

(H/V-DY

hamess)

Connect

the

H/V-DY

hamess

(brown,

ted,

orange,

blue,

black)

to

connector

CN4

on

the

VF-67

board

through

the

lower

side

of

the

VF

cable.

Flexible

card wire

VF-67

board

H/V-DY

harness

When

installing

the

upper

chassis,

take

care

not

to

clamp

the

harmess

between

upper

and

lower

chassis.

After

replacing

the

CRT,

be

sure

to

perform

the

electrical

adjustment.

(Refer

to

Section

2.)

Note

After

adjustments

are

completed,

paint-lock

the

centering

magnet.

1-6

(E)

BYE.

V2DWV2OWCE

1-6.

Disconnecting/Connecting

Flexible

Card

Wire

The

flexible

card

wire

is

used

between

the

VF-67

board

and

VR-226

board.

Take

care

not

to

break

this

flexible

card

wire.

This

shorten

the

wire

life.

Disconnecting

1.

Turn

off

the

power.

2.

Slide

portions

A

in

the

direction

of

the

arrows

to

unlock

and

pull

out

the

flexible

card

wire.

Connecting

+

Be

careful

not

to

insert

the

flexible

card

wire

obliquely.

+

Check

that

the

conductive

surface

of

the

flexible

card

wire

is

not

soiled

with

dust.

1.

Slide

portions

A

in

the

direction

of

the

arrows

and

insert

the

flexible

card wire

as

far

as

it

will

go

with

the

conductive

surface

down.

2.

Slide

portions

A

in

the

reverse

direction

to

lock.

“4

A

“

A

Conductive

surface

BVF-VZ0WnV20WCE

1

1.

1-6.

Digconnecting/Connecting

Flexible

Card

Wire

1-7.

Notes

on

Spare

Parts

-7.

Notes

on

Spare

Parts

Safety

Warning

Components

marked

A\

are

critical

to

safe

operation.

Therefore,

specified

parts

should

be

used

in

the

case

of

replacement.

2.

Standardization

of

Parts

Some

spare

parts

supplied

by

Sony

differ

from

those

used

for

the

unit.

These

are

because

of

parts

common-

ality

and

improvement.

Parts

list

has

the

present

standardized

repair

parts.

3.

Stock

of

Parts

marked

with

“o”

at

SP(Supply

Code)

column

of

the

spare

parts

list

may

be

not

stocked.

Therefore,

the

delivery

date

will

be

delayed,

4.

Units

Representation

The

following

represented

units

are

changed

or

omitted

in

writing.

Units

Representation

Capacitance

uF

Inductance

pH

uH

Resistance

2

Abbreviation

Temperature

“Cc

XXX-DEG-C

5.

Destination

Representation

‘The

part

indicated

“For

J/UC/EK”

in

the

spare

parts

list

is

used

in

the

unit

written

below.

For

UC]

:

The

part

is

used

in

a

unit

for

U.S.A.

,

Canada

and

Japan.

For

CE:

The

part

is

used

in

a

unit

for

regions

except

the

above

countries.

1-7

(E)

Section

2

Electrical

Alignment

2-1.

Electrical

Adjustment

Using

a

Camcorder

2-1-1.

Notes

on

Adjustment

1,

When

performing

adjustment,

read

throughly

the

following

comments.

The

calibration

of

all

measuring

equipment

should

be

compicted,

Peripheral

equipment

(camera,

and

others)

alignment

should

be

completed.

“2-1-4,

Settings

for

adjustment”

should

be

completed.

Tum

off the

power

before

extending

the

plug-in

board

using

the

extension

board.

There

is

a

danger

of

an

electric

shock

around

the

CRT

due

to

high

voltage.

Therefore,

do

not

touch

the

CRT.

Be

very

careful

when

service

in

a

live.

2.

Change

the

Picture

Frame

mode

(4:3/16:9)

+

When

the

unit

is

put

into

the

16:9

mode,

set

as

follows.

Setting

menu

PAGE

;

WIDE

SCREEN

ITEM

9/4:3

MODE

=

16:9

*

When

the

unit

is

put

into

the

4:3

mode,

set

as

follows.

Setting

menu

PAGE

:

WIDE

SCREEN

ITEM:

16:9/4:3

MODE

=

4:3

2-1-2.

Equipment/Fixtures

+

Camcorder

DVW-700WS/700WSP

or

DNW-90WS/90WSP

+

AC

adaptor

AC-550/550CE

or

equivalent

+

Oscilloscope

Tektronix

2465B

or

equivalent

+

Waveform

monitor

Tektronix

1750/1751

or

equivalent

+

B/W

monitor

+

Digital

voitmeter

Advantest

TR6845

or

equivalent

+

Frequency

counter

Advantest

TR5821AK

or

equivalent

BVF-V20WIv20WCE

Fixtures

Sony

P/N

Pattern

box

“PTB-500"

J46026-140-B

Resolution

chart

(4:3)

4J-6026-100-A

Resolution

chart

(16:9)

J46394-320-A

VF

extension

hamess

J-6395-050-A

2-1-3.

Connections

VE

AC

ADAPTOR

BVF-V20W

AC-S50/550CE

BVF-V20WCE

F

LJ

PATTERN

BOX

CAMCORDER

DVW-700WS/700WSP

750

2-1-4.

Settings

for

Adjustment

Before

adjustment,

set

switches

as

follows.

If

the

setting

of

the

GAIN

switch

is

changed

from

the

factory-set

value,

reset

it

to

its

original

value,

reset

it

to

its

original

value

by

referring

to

the

operation

manual.

[External]

Side

panel:

VTR

SAVE/STBY

switch

—

STBY

GAIN

switch

>

L(0dB)

OUTPUT/DCC

switch

—

CAM/OFF

WHITE

BAL

switch

—

PRST

MENU/ON/OFF/PAGE

switch

=

—

OFF

Front

panel:

SHUTTER

switch

—

OFF

FILTER

selector

>

1,B

{Lens]

LENS

~>

MANU

IRIS

~»

C

(CLOSE)

(To

be

continued)

2-4

(E)

2-4.

Electrical

Adjustment

Using

a

Camcorder

[Internal]

Note

Put

the

unit

into

the

ENG

mode,

Refer

to

the

maintenance

manual

part

1

of

camcorder

as

for

setting

to

the

ENG

mode.

Setting

menu:

*

MASTER

GAIN

LOW

MID

HIGH

*

FUNCTION

1/2

DETAIL

SKIN

TONE

DETAIL

MATRIX

GAMMA

CHROMA

TEST

SAW

+

FUNCTION

2/2

GENLOCK

CAM

RET

FILTER

INH

*

TEST

OUT

ENC

+

WIDE

SCREEN

16:9/4:3

MODE,

‘VF

ASPECT

+

LEVEL

3/9

KNEE

WHITE

CLIP

>

LEVEL

4/9

I

Q

R-Y

B-Y

2-2

(E)

7

0dB

7

9dB

—

18dB

7

ON

—

OFF

—

OFF

—

ON

7

ON

—

OFF

ON

—

OFF

~~

ON

4:3

—

AUTO

~

ON

—

ON

(for

DVW-700WS)

ON

(for

DVW-700WS)

7

ON

(for

DVW-700WSP,

DNW-90WS/90WSP)

-

ON

(for

DVW-700WSP,

DNW-90WS/90WSP)

2-1-5.

Extending

Viewfinder

1.

Turn

off

the

power

switch

on

the

camera

before

performing

adjustment.

2.

Remove

the

viewfinder

from

the

camera,

then

remove

the

chassis

(upper)

Chassis

(upper)

3.

Connect

the

viewfinder

to

the

camera

using

the

VF

extension

harness

(J-6395-050-A)

.

4.

Turn

on

the

main

power

switch.

Rys

O@

AV?

RV4

Rye

oll

RV3

CPS

CPi

i

LE;

RVS

RVI2

vig

[]ors

2

TPS

=a)

©)

TP2

CN2

CN5

a

RVIS:

on:

@

More

@

Rv2

L2

VF-67

BOARD

{A

SIDE)

BYF-VOOWNZOWCE

2-1-6.

Vertical

Hold

Adjustment

241.

Electrical

Adjustment

Using

a

Camcorder

2-1-8.

Sub

Contrast

Adjustment

Preparation

+

Extract

the

ES-11

board

from

the

camcorder.

(DNW-90WS/90WSP)

+

Extract

the

IF-443

board

from

the

camcorder.

(DV

W-700WS/700WSP}

Adjustment

Procedure

1.

Equipment

:

Frequency

counter

Test

point

:

CP3/VF-67

GND

:

E1/VF-67

Adjustment

point

:

@RV9

(V-HOLD)

/VF-67

Specification

:

48.0

+0.5

Hz

(For

NTSC)

38.0

0.5

Hz

(For

PAL)

Setting

after

Adjustment

+

Attach

the

ES-11

board

to

the

camcorder.

(DNW-90WS/90WSP)

*

Attach

the

IF-443

board

to

the

camcorder.

(DVW-700WS/700WSP}

2-1-7.

Horizontal

Hold

Adjustment

Preparation

+

Extract

the

ES-11

board

from

the

camcorder.

(DNW-90WS/90WSP)

+

Extract

the

IF-443

board

from

the

camcorder.

(DV

W-700WS/700WSP)

Preparation

*

OUTPUT/DCC

switch

(on

the

camcorder

side

panel)

—

BARS/OFF

+

CONTRAST

control

—

Fully

clockwise

Adjustment

Procedure

1

Equipment

+

Oseillocscope

Test

point

:

CP2/VE-67

GND

:

EL/VF-67

Adjustment

point

:

@RV15

(SUB

CONTRAST)

/

VF-67

Specification

;

A=10.0

0.1

V

p-p

(without

sync)

For

NTSC

model

A

Sf

For

PAL

model

A

2

Adjustment

Procedure

1,

Equipment

:

Frequency

counter

Test

point

:

CP1/VF-67

GND

:

EL/VF-67

Adjustment

point

:

@RV7

(H-HOLD)

/VF-67

Specification

:

15.73

£0.05

kHz

(For

NTSC)

15,63

£0.05

kHz

(For

PAL)

Setting

after

Adjustment

+

Attach

the

ES-11

board

to

the

camcorder.

(DNW-90WS/90WSP)

»

Attach

the

IF-443

board

to

the

camcorder.

(DVW-700WS/700WSP)

BVF-v20W/vZoWCE

2-3

(E)

2:1.

Electrical

Adjustment

Using

a

Camcorder

2-1-9.

Bright

Set

Adjustment

Preparation

+

Set

to

the

4:3

mode.

*

QUTPUT/DCC

switch

(on

the

camcorder

side

panel)

—

BARS/OFF

+

BRIGHT

control

—

Mechanical

center

+

CONTRAST

control

>

Mechanical

center

Adjustment

Procedure

1,

Adjustment

point

:

@RV2

(SUB

BRIGHT)

/VF-67

Specification

:

Refer

to

lower

figure

2,

Set

to

the

16:9

mode.

3.

Adjustment

point

:

@RV4

(SUB

BRIGHT

WIDE)

/

VR-226

Specification

:

Refer

to

lower

figure

For

NTSC

model

Adjustment

method

:

Adjust

@RV2

(@RV4)

so

that

the

black

of

portions

A

(front-porch)

or

B

(back-porch)

on

the

viewfinder

screen

can

be

barely

discriminated

black.

Portions

A,

B

and

the

blanking

of

A

or

B's

side

cannnot

be

discriminated.

A

B

L

For

PAL

model

Adjustment

method

:

Adjust

@RV2

(@RV4)

so

that

the

black

of

portions

A

(front-porch)

or

B

(back-porch)

on

the

viewfinder

screen

can

be

barely

discriminated

black.

Portions

A,

B

and

the

blanking

of

A

or

B's

side

cannnot

be

discriminated.

2-4

(E)

2-1-10.

Focus

Adjustment

Note

This

adjustment,

“2-1-11.

Heater

Voltage

Adjustment”

and

“2-1-12.

Picture

Frame

Adjustment”

affect

each

other,

Therefore,

repeat

these

adjustments

until

these

specifica-

tions

are

satisfied,

Preparation.

+

Set

to

the

16:9

mode.

Shoot

the

resolution

chart

(16:9)

so

that

the

chart

frame

is

aligned

with

the

underscanned

monitor

frame.

Adjust

the

iris

of

the

lens

so

that

the

output

level

(peak-

to-peak)

at

TEST

OUT

connector/camcorder

with

the

waveform

monitor.

Spec.

:70

+2

IRE

(for

NTSC)

490

£14

mV

(for

PAL)

(Viewfinder

screen)

*

BRIGHT

control

->

Mechanical

center

«

CONTRAST

control

>

Mechanical

center

Adjustment

Procedure

1.

Adjustment

point:

@RV5

(FOCUS

SET)

/VF-67

Adjustment

method

:

Turn

@RYS

fully

counterclock-

wise,

and

slowly

turn

it

clock-

wise

to

adjust

the

best

focus

position.

2.

Confirm

that

the

best

focus

can

be

obtained

irrespec-

tive

of

its

BRIGHT

and

CONTRAST

controls

setting.

3.

Set

to

the

4:3

mode.

BVE-V20WN20WCE

4,

Set

camera

and

viewfinder

as

follows.

+

Shoot

the

resolution

chart

(4:3)

so

that

the

chart

frame

is

aligned

with

the

underscanned

monitor

frame.

+

Adjust

the

iris

of

the

lens

so

that

the

output

level

(peak-to-peak)

at

TEST

OUT

connector/camcorder

with

the

waveform

monitor.

Spec.

:

70

+2

IRE

(for

NTSC)

490

+14

mV

(for

PAL)

2-1,

Electrical

Adjustment

Using

a

Camcorder

2-1-11.

Heater

Voltage

Adjustment

Note

‘This

adjustment,

“2-1-10.

Focus

Adjustment”

and

“2-1-12.

Picture

Frame

Adjustment”

affect

each

other.

Therefore,

repeat

these

adjustments

until

these

specifica-

tions

are

satisfied.

(Viewfinder

screen)

+

BRIGHT

control

—

Mechanical

center

+

CONTRAST

control

-+

Mechanical

center

+

Confirm

that

the

focus

operation

can

be

performed.

5,

Equipment

:

Digital

voltmeter

‘Test

point

:

TP2/VE-67

(B

SIDE)

GND

:

EL/VF-67

Adjustment

point

:

@RV12

(OPAMP-ADJ)

/VE-67

Specitication

16.0

40.2

Vde

Note

After

adjustments

are

completed,

confirm

that

the

best

focus

can

be

obtained

irrespective

of

its

BRIGHT

and

CONTRAST

controls

setting.

——

a!

RVS

AVI2

4

QO

7)

:

@rP2

Hoes

*

we

sive)

RV3

CPS

ON2

¢

(TPs

CNS

cea

CFT

Ryis

Cf

om

@

[ore

i}

RVS

RVIO

Rv2

C290@

@v

RVil

RVi4

VE-67

BOARD

(A

SIDE)

BvF-veoWveOWOE

Preparation

+

Set

to

the

4:3

mode.

*

BRIGHT

control

—

Mechanical

center

+

CONTRAST

control

—

Mechanical

center

+

PEAKING

control

—

Mechanical

center

*

Iris

of

the

lens:Close

Adjustment

Procedure

1.

Equipment

Test

point

:

Digital

voltmeter

:

CP4

(H1)/VF-67

CPS

(H2)/VF-67

Adjustment

point

:

@RV6

(HEATER)/VF-67

Specification

:

635

£15

mV

de

2:

Confirm

that

the

specification

is

met

and

horizontal

noise

irrespective

of

its

BRIGHT,

CONTRAST

and

PEAKING

controls

setting.

3.

Set

to

the

16:9

mode.

4.

Confirm

that

the

specification

is

met

and

horizontal

noise

irrespective

of

its

BRIGHT,

CONTRAST

and

PEAKING

controls

setting.

2-5

(E)

2-1.

Electrical

Adjustment

Using

@

Camcorder

2-1-12.

Picture

Frame

Adjustment

Note

This

adjustment,

“2-1-10,

Focus

Adjustment”

and

“2-1-11.

Heater

Voltage

Adjustment”

affect

each

other.

Therefore,

repeat

these

adjustments

until

these

specifica-

tions

are

satisfied.

Preparation

+

Set

to

the

16:9

mode.

+

Shoot

the

resolution

chart

(16:9)

so

that

the

chart

frame

is

aligned

with

the

underscanned

monitor

frame.

+

Adjust

the

iris

of

the

lens

so

that

the

output

level

(peak-

to-peak)

at

TEST

OUT

connector/camcorder

with

the

waveform

monitor.

Spec.

:70

£2

TRE

(for

NTSC)

490

£14

mV

(for

PAL)

{Viewfinder

screen)

+

BRIGHT

contro!

>

Mechanical

center

*

CONTRAST

control

>

Mechanical

center

Adjustment

Procedure

1.

Adjustment

point

:

@RV7

(H-HOLD)

/VF-67

Specification

:

If

the

upper

left

comer

of

the

picture

is

distorted,

makes

right

angle.

2.

Adjustment

point

:

@RV11

(V-LIN)

/VF-67

@RV13

(H-LIN)

/VF-67

Lj

©

(Viewfinder

screen)

3.

Adjustment

point

:

@RV4

(H-SIZE

WIDE)

/VF-67

@RV

10

(V-SIZE)

/VF-67

@Centering

magnet

:

Adjust

@RV4

and

@RV10

so

that

the

positions

of

the

resolu-

tion

chart

are

as

shown

below.Turn

the

centering

magnet

only

when

the

left

and

Jower

comers

cannot

be

adjust-

ed.

Adjustment

method

Approx.

2mm

Torker:

:

opr

MEME

poorox.

2

mm

Picture

frame

(Viewfinder

screen)

4,

Check

that

the

required

specification

is

met.

Test

point:

TP3/VF-67

(B

SIDE)

Specification

:

8.80

£0.20

V

de

If

not,

repeat

from

step

3.

5.

Place

the

VF

tube

to

the

lower

chassis

as

shown

below,

and

confirm

that

the

picture

is

in

the

center

of

the

viewfinder

in

the

normal

installing

position.

:

Minimize

the

distortion

of

the

four

circles

at

the

corners

of

the

resolu-

tion

chart.

Specification

(To

be

continued)

2-6

(E)

Note

When

the

centering

magnet

is

tumed,

paint-lock

it

again.

BVF-VZOWN20WCE

6,

Set

to

the

4:3

mode.

7.

Shoot

the

resolution

chart

(4:3)

so

that

the

chart

frame

is

aligned

with

the

underscanned

monitor

frame.

8.

Adjust

the

iris

of

the

lens

so

that

the

output

level

(peak-to-peak)

at

TEST

OUT

connector/camcorder.

Spec.

:70

+2

JRE

(for

NTSC)

490

+14

mV

(for

PAL)

{Viewfinder

screen)

9.

Adjustment

point

:

@RV3

(H-SIZE)

/VF-67

Specification

:

Minimize

the

distortion

of

center

circle

and

the

four

circles

at

the

corners

of

the

resolution

chart.

10.

Check

that

the

required

specification

is

met.

Test

point

:TP3/VF-67

(B

SIDE)

Specification

:

6.95

+0.25

V

de

If

not,

repeat

from

step

9.

Se

eg

a

rey

900

RYS,

8g”

RVI

RV?

AV4

|

AVe_Et

a

{J

C)TP2

ave

oes

one

L]oP4

TPS

&s

(B

SIDE)

cps

CFI

avis

SU

om

2

[ere

@

IRVe_

VIO

ond

Rv2

@

cameo

@w

BY

RV14

VF-67

BOARD

(A

SIDE)

BYF-V20WAV20WCE

2-1.

Electrical

Adjustment

Using

a

Camcorder

2.2,

Electrical

Adjustment

Using

a

VF

Checker

2-2.

Electrical

Adjustment

Using

a

VF

Checker

2-2-1.

Notes

on

Adjustment

1.

When

performing

adjustment,

read

throughly

the

following

comments.

+

The

calibration

of

all

measuring equipment

should

be

completed.

+

“2-2-4,

Settings

for

adjustment”

should

be

completed.

WARNING

There

is

a

danger

of

an

electric

shock

around

the

CRT

due

to

high

voltage.

Therefore,

do

not

touch

the

CRT.

Be

very

careful

when

service

in

a

live.

2-2-2.

Equipment/Fixtures

+

Composite

signal

generator

Shibasoku

TG21AX

or

equivalent

+

Monoscope

signal

generator

Shibasoku

TG21A1001

or

equivalent

[For

NTSC]

Shibasoku

TG21A2001

or

equivalent

[For

PAL]

+

AC

adapter

Sony

AC-550/550CE

or

equivalent

*

Oscilloscope

Tektronix

2465B

or

equivalent

+

Waveform

monitor

Tektronix

1750/1751

or

equivalent

+

Frequency

counter

Advantest

TR5821AK

or

equivalent

Fixtures:

Sony

P/N

VF

cheker

J-6422-300-A

VF

extension

harness

J-6395-050-A

2-7

(E)

2-2.

Electrical

Adjustment

Using

a

VF

Checker

2-2-3.

Connections

VF

BVF-V20W

BVF-V2OWCE

AC

ADAPTOR

=p

AC-550/550CE

VF

checker

Signal

VF

generator

EXT

oc

INPUT

VIDEO

‘VBS.

Y,A-Y,B-Y)

2-2-4.

Settings

for

Adjustment

Set

switches

as

follows

before

adjustment.

VF

checker:

INPUT

VIDEO

VBS

switch

>

SG

INPUT

VIDEO

Y/R-Y/B-Y

switch

>

SG

BIA/CCIR

switch

>

EIA

[For

NTSC]

BIA/CCIR

switch

—

CCIR

[For

PAL}

16

:

9/4

:3

switch

>

4:3

COMP/VBS

switch

—>

VBS

2-2-5.

Extending

Viewfinder

1.

Remove

the

chassis

(upper).

Chassis

(upper)

a]

2.

Connect

the

viewfinder

to

the

VF

checker

using

the

VE

extension

harness

(J-6395-050-A).

2-8

(E)

2-2-6.

Vertical

Hold

Adjustment

Preparation

+

Disconnect

the

cable

from

the

VBS

connector

on

the

VF

checker.

Adjustment

Procedure

1.

Equipment

:

Frequency

counter

‘Test

point

:

CP3/VF-67

GND

>

E1/VF-67

Adjustment

point

:

@RV9

(V-HOLD)

/VF-67

Specification

:

48.0

+0.5

Hz

(For

NTSC)

38.0

+0.5

Hz

(For

PAL)

2-2-7.

Horizontal

Hold

Adjustment

Preparation

+

Disconnect

the

cable

from

the

VBS

connector

on

the

VF

checker.

Adjustment

Procedure

1.

Equipment

:

Frequency

counter

Test

point

:

CPL/VF-67

GND

+

El/VF-67

Adjustment

point

:

@RV7

(H-HOLD)

/VF-67

Specification

:

15.73

£0.05

kHz

(For

NTSC)

15.63

£0.05

kHz

(For

PAL)

RVS

BVI

O@

RVI3

@

TP2

[]cra

TPs

VF-67

BOARD

{A

SIDE)

BVF-V2OW/VZ0WCE

Sony BVF-V20W User manual

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