Sony BVF-V20W User manual

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1

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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

Pin

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

Pin

Assignments

Describes

function

diagrams

and

pin

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)

Pin

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

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