Sony MGV-41E User manual

Table of contents

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MGV-41E

SERVICE

MANUAL

AEP

Model

UK

Model

French

Model

LKMA

CoM

A

0

SPECIFICATIONS

System

LCD

(Liquid

Crystal

Display)

Colour

Monitor

Picture

4

inches

measured

diagonally

approx.

8.2

x

6.2.cm

(3%

x

2%

inches)

On-screen

display

TL

LCO/TFT

active

matrix

method

Picture

element

112,

086

(479

x

234)

Lighting

system

Built-in

type

(small

fluorescent

tube)

Inputs/outputs

A/V

IN

12-pin

termianl,

for

GV-U5E

PHONES

Stereo

minijack,

8

ohms,

for

earphones

Power

requirements

6

V

DC

supplied

from

A/V

IN

terminal

Power

consumption

3.5W

Operating

temperature

0°C

to

40°C

(32°F

to

104°F))

Storage

temperature

—

20°C

to

60°C

(—4°F

to

140°F)

Dimensions

Approx.

133

x

96

x

38

mm

(w/h/d)

(5%

x

3%

x

1%

inches)

including

projecting

parts

and

controls

Weight

Approx.

340g

(12

02)

Supplied

accessories

Monitor

cable

(1)

Stereo

earphones

(1)

Carrying

case

(1)

Hood

(1)

Handstrap

(1)

Design

and

specifications

are

subject

to

change

without

notice.

Note

This

appliance

conforms

with

EEC

Directive

87/308/EEC

regarding

interference

suppression.

LD

COLOR

MONITOR

ONY.

MICROFILM

TABLE

OF

CONTENTS

Section

Title

Page

1.

GENERAL

-

Location

of

Parts

and

Controls*

+

-*

°c

°°

3

‘Connections

«*

se

ote

tte

ewe

3

*Playing

Back

the

Tapes*

>

*

*

ss

et tt

ete

4

-

Watching

TV

Programmese

sss

ss

te

tt

tt

tt

4

*

On-Screen

Displays

-

oe

ae

eee

ees

ee

4

-

Using

Accessories

Supplied

and

Not

Supplied

-

-

5

2.

DISASSEMBLY

9-1.

Removal

of

Lower

Cabinet

-*-

°°

sere

*

6

9-2.

Removal

of

RG-24

Board

-**

+c

ec

°°?

226

&

9-3.

Removal

of

Converter

Unit?

«>

se

see

*

6

9-4.

Removal

of

LCD

Modules

+++

creer

rere

7

9-5.

Removal

of

Control

Panel

«+

+e

eee

ee ee

7

3.

DIAGRAMS

3-1.

Block

Diagrams

> *

ss

ee

ee

ee

ee ee ee

B

4.

PRINTED

WIRING

BOARDS

AND

SCHEMATIC

DIAGRAMS

4-1.

Semiconductor

Lead

Layouts

>

+

*

see

eee

ell

4-2.

Printed

Wiring

Boards

and

Schematic

Diagrams

-

11

*

RG-24

Board

++

642

+

JK-71

Board

-

se

ee

ee

ee

ee

ee

ee

ee

oe

Ih

4-3.

Waveformse

«et

tt

et

ee

ee

ee

ee

MG

re

Section

Title

Page

5.

EXPLODED

VIEWS

----*--+--ssree:°19

6.

ELECTRICAL

PARTS

LIST---+---->-+-

+20

7.

ELECTRICAL

ADJUSTMENTS

7-1.

Preparation

for

Adjustment

-***

s+

eee?

1-1-1.

Using

Instruments’

»--*

se

eee

eee

7-1-2.

Connection

of

Instruments’

+

*****¢*°

7-2.

Power

Soure

Part

Checkingy

**

+

seers

*

7-3,

Contrast

Adjustment(RG-24

board)

**

+++

+>

7-4.

R

Contrast

Adjustment(RG-24

board)

+

+--+

+>

7-5.

B

Contrast

Adjustment(RG-24

board)

+ °

=

7-6.

Sub

Bright

Adjustment(RG-24

board)

--

+

°°

7-1.

White

balance

Adjustment(RG-24

board):

+

+ °

7-8.

fse

Adjustment(RG-24

board):

** +s

see?

7-9.

V

COM

DC

Adjustment(RG-24

board)

-

+--+

+>

7-10.

Character

Position

Adjustment(RG-24

board)

7-11.

Anti

PAL

Adjustment

1(RG-24

board)

+

+++

°

7-12,

Anti

PAL

Adjustment

2(RG-24

board)

-

+++

+>

7-13.

Anti

PAL

Adjustment

3(RG-24

board)

-

+++

°

Adjusting

Parts

Location

Diagram

*>******

SAFETY

CHECK-OUT

After

correcting

the

original

service

problem,

perform

the

following

safety

checks

before

releasing

the

set

to

the

customer:

1.

Check

the

area

of

your

repair

for

unsoldered

or

4.

Look

for

parts

which,

though

functioning,

show

poorly-soldered

connections.

Check

the

entire

obvious

signs

of

deterioration.

Point

them

out

board

surface

for

solder

splashes

and

bridges.

to

the

customer

and

recommend

their

replace-

2.

Check

the

interboard

wiring

to

ensure

that

no

ment.

wires

are

“pinched”

or

contact

high-wattage

5.

Check

the

B+

voltage

to

see

it

is

at

the

values

resistors.

specified.

3.

Look

for

unauthorized

replacement

parts,

par-

ticularly

transistors,

that

were

installed

during

a

previous

repair..Point

them

out

to

the

customer

and

recommend

their

replacement.

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

MARK

A

OR

DOTTED

LINE

WITH

MARK

A

ON

THE

SCHEMATIC

DIAGRAMS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

TO

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUB-

LISHED

BY

SONY.

Supplied

Accessories

Monitor

cable

(1)

Da.”

Hood

(1)

Stereo

earphones

(1)

Carrying

case

(1)

Handstrap

{1}

ATTENTION

AU

COMPOSANT

AYANT

RAPPORT

A

LA

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

MARQUE

/\

SUR

LES

DIAGRAMMES

SCHEMATIQUES

ET

LA

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

LA

SECURITE

DE

FONCTIONNEMENT.

NE

REMPLACER

CES

COM-

POSANTS

QUE

PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

CE

MANUEL

OU

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

SECTION

1

GENERAL

This

section

is

extracted

from

instruction

manual.

Location

ro)

j

Parts

F

Vato

|

Controls

Refer

to

the

pages

indicated

in

_

for

details.

Front

Rear

POWER

ON/OFF

switch

Turns

on

and

off

the

power

of

the

GV-USE

8mm

video

cassette

recorder

and

the

TGV-1E/1B

tuner

timer

unit

as

well

as

the

MGV-41E.

BRIGHT

(brightness)

control

@

COLOUR

control

@

DATA

SCREEN

ON/OFF

button

@

COUNTER

RESET

button

@

il

(pause)

button

How

to

use

the

stand

<@4

(rewind)

button

eS

PP

(fast

forward)

button

0

@

D

(play)

button

O

(stop)

button

Adjust

the

angle

of

the

screen

so

that

the

picture

is

most

visible.

Screw

hole

for

the

TV

arm

stand

LCO

screen

(not

supplied)

AIV

IN

(audio/video

input)

terminal

@

(12-pin)

MEGA

BASS

switch

@

VOL

(volume)

control

PHONES

jack

(stereo

minijack)

4

5

oxeyalar-veg

tre)

ary

For

Tape

Playback

Use

the

supplied

monitor

cable

to

connect

the

A/V

IN

terminal

(12-pin)

on

the

MGV-41E

LCD

colour

monitor

and

the

A/V

OUT

terminal

(12-pin)

on

the

GV-U5E

8mm

video

cassette

recorder.

Before

connecting,

check

that

the

power

of

the

GV-USE

is

turned

off.

Stereo

earphones*

How

to

insert

or

remove

the

cable

to

PHONES

Monitor

cable

to

A/V

IN

terminal

(supplied)

(12-pin)

to

AV

OUT

terminal

(12-pin}

GV-U5E

Holding

the

plug

to

CAMERA

TUNER

terminal

to

PHONES{

Stereo

*

I

earphones

Adjust

the

volume

ay

with

the

GV-US5E.

PHONES

IN

cable

*

You

can

listen

to

the

sound

by

connecting

earphones

to

both

or

either

the

MGV-41E

or

the

GV-USE.

>

TUNER

OUT

TGV-1E/18

OUT

eable

Power

Source

te

6E

AC

power

adaptor

Battery

packs

DC

pack

The

power

of

the

MGV-41E

is

supplied

from

the

GV-USE.

Install

the

power

source

in

the

GV-USE.

(For

details,

refer

to

the

operating

instructions

of

the

GV-U5E.}

Playing

Back

the

Tapes

There

are

buttons

with

the

same

function

on

both

the

MGV-41E

LCD

colour

monitor

and

the

GV-USE

8mm

video

cassette

recorder.

You

can use

either

of

the

two.

Turn

the

power

on,

The

power

of

the

GV-USE

is

also

turned

on.

MGV-41E

Slide

POWER

POWER

to

the

right.

ON/OFF

1304

While

pressing

the

greer

bulton,

slide

POWER

to

the

right.

(The

switch

returns

automatically.)

Insert

a

recorded

tape

into

the

GV-US5E.

Press

the

D

button

to

start

playback.

PLAN

Adjust

the

volume.

To

increase

volume

When

listening

through

the

earphones

connected

3

to

the

GV-U5E,

adjust

the

volume

with

the

VOL

x

control

on

the

GV-U5E.

To

decrease

volume

To

stop

playback

Press

the

D

button.

To

rewtnd

the

tape

Press

the

<4

button.

To

advance

the

tape

Press

the

PP

button.

To

turn

the

power

off

MGV-41E

GV-U5E

T_™

cauene

ttn

oor?

OR

e

POWER

ON/OFF

Slide

POWER

While

pressing

the

green

to

the

right.

button,

slide

POWER

to

the

right.

(The

switch

returns

automatically.)

ous

Playback

Modes

To

stop

the

tape

for

a

moment

—

Still

picture

Press

the

If

button

during

playback

To

resume

normal

playback,

press

the

If

button

again

or

the

>

button.

The

pause

is

automatically

released

after

§

minutes

and

the

unit

enters

the

stop

mode.

To

locate

a

particular

point

while

viewing

the

picture

—

Picture

search

———}—

Press

the

®®

button

or

the

<4

button

during

playback

To

view

the

picture

at

high

speed

—

FR

picture

search

While

rewinding,

press

the

<4

button.

While

fast

forwarding,

press

the

PP

button.

Horizontal

bands

appear

in

the

screen.

When

you

release

the

button,

the

previous

mode

resumes.

Notes

©

Horizontal

bands

will

appear

in

the

still,

picture

search

and

FR

picture

search

modes.

No

sound

is

heard.

A

still

picture

recorded

in

the

SP

mode

will

have

more

noise

than

in

the

LP

mode.

There

are

buttons

with

the

same

function

on

both

the

MGV-41E

LCO

colour

monitor

and

the

GV-U5SE

8mm

video

cassette

recorder.

You

can use

either

of

the

two.

On-Screen

Displays

Display

the

Data

of

the

GV-U5E

8mm

Video

Cassette

Recorder

To

display

the

following

indications

of

the

GV-US5E

8mm

video

cassette

recorder

on

the

screen,

press

the

DATA

SCREEN

ON/OFF

button

of

the

MGV-41E

LCD

colour

Turn

the

power

on,

The

power

of

the

GV-US5E

and

the

TGV-1E/1B

tuner

timer

unit

is

also

turned

on.

the

right.

MGV-41E

Slide

POWER

to

slide

POWER

to

the

night.

(The

GV-U5E

—

poweR

om

CAMERA

©

0

YTR

ONOFF

al

OR

a

While

pressing

the

green

button,

switch

returns

automatically.)

2

To

display

#

TV

programme,

slide

the

LINE

switch

to

CAMERA/TUNER

on

the

GV-USE.

CAMERA

TUNER®

ouTe

en

LINE

3

Select

the

desired

programme

with

the

—/+

buttons

on

the

TGV-1E/18.

"

(&!

4

Adjust

the

volume.

control

on

the

GV-U5E.

To

turn

the

power

off

MGV-41E

The

power

of

the

GV-USE

and

a

TGV-1E/1B

is

also

turned

off.

POWER

ON/OFF

Stide

POWER

to

the

right.

When

listening

through

the

earphones

connected

3

to

the

GV-U5E,

adjust

the

volume

with

the

VOL

x

To

increase

volume

To

decrease

volume

GV-USE

POWER

aie

cawenae

2vTH

ONOFF

oR

&

While

pressing

the

green

bution,

slids

POWEA

switch

to

the

right.

(The

swilch

returns

automatically.)

14

monitor.

To

delete

them,

press

the

button

again.

DATA

SCREEN

ON/OFF

button

loput

[LINE{SPH—

Recording

mode

[0:24:48}}—

Counter

Tape

transport

operation

Alarm

indications

the

screen

of

the

MGV-41E:

If

some

trouble

occurs

inside

the

GV-USE,

the

following

alarm

indications

appear

on

Screen

Indications

Meaning

BATTERY

Battery

will

run

out

(flashing

slowly)

soon.

BATTERY

Battery

has

run

out

(flashing

quickty)

completely.

DEW

Moisture

condensation

gi

dect

has

occured.

The

indication

appears

here.

CLOG

The

head

is

clogged.

13

On-Screen

Displays

To

Display

the

Data

of

the

TGV-1E/1B

Tuner

Timer

Unit

To

display

the

following

information

of

the

TGV-1E/iB

tuner

timer

unit

on

the

screen,

press

the

DISPLAY

button

of

the

TGV-1E/1B.

To

delete

the

indications,

press

the

button

again.

Current

time

‘Programme

number

TV

system

@

When

the

DISPLAY

button

is

pressed

while

you

are

selecting

the

channel

with

the

—/+

buttons,

the

VHF

or

UHF

channel

range

appears

on

the

screen.

*

To

display

the

data

of

the

GV-USE

8mm

video

cassette

recorder

together

with

those

of

the

TGV-1E/1B

on

the

screen,

press

the

DATA

SCREEN

ON/OFF

button

on

the

MGV-41E

LCD

colour

monitor.

TGV-1E/1B

Display

button

During

channel

presetting

During

timer

setting

for

recording

17:30

1

sP

ON

TIME

OFF

TIME

Wine

14

Using

Accessories

Supplied

and

Not

Supplied

To

Attach

the

Handstrap

(supplied)

Handstrap

Installation

hole

for

handstrap

To

Attach

the

Hood

(supplied)

=

When

using

the

MGV-41E

outdoors

or

in

the

car,

attach

the

hood

to

make

the

picture

more

visible.

Installation

The

hood

is

also

used

for

protecting

the

screen

by

2

folding

as

below:

Fasten

the

hooks.

To

avoid

damaging

the

hood,

Attach

the

Velcro

tapes

loosen

the

Velcro

tapes.

To

Use

the

MGV-41E

as

a

Mon

of

the

8mm

Video

Camera

MGV-41E

*\

VMC-120

adaptor

/

(not

supplied)

mm

video

camera

Se”

15

MGV-41E

SECTION

2

DISASSEMBLY

Note:

Follow

the

disassembly

procedure

in

the

numerical

order

given.

2-1.

REMOVAL

OF

LOWER

CABINET

@

screw(M2

x

6)

@

two

screws(M2

x

6)

@/lower

cabinet

O

three

screws(M2

x

4)

2-2.

REMOVAL

OF

RG-24

BOARD

@two

screws(P2

x

3)

@connector

to

RG-24

board

>

~

Co

-

rw

©

flat

cable

(1.O0MM

pitch)

(76P)

SS)

Be

:

®

connector

to

RG-24

board

(CNOO2

7P)

2-3.

REMOVAL

OF

CONVERTER

UNIT

@converter

unit

2-4.

REMOVAL

OF

LCD

MODULE

2-5.

REMOVAL

OF

CONTROL

PANEL

screw(P2

X

3)

@

DA

ground

plate

©

LCD

lower

plate

control!

panel

MGV-41E

3-1.

BLOCK

DIAGRAM

SECTION

3

DIAGRAMS

BACK

LIGHT

REG +5V

REG

+13V

(

CONVERTER

REG

-8V

REG

-20V

F

POWER

CONT

1

Voo

POWER

CONT

2

RESET

LCD

POWER

ON

1

LCD

POWER

ON

2

SW.BLOCK

OATA

ON/OFF

POWER

DATA

ON/OFF

COUNTER

RESET

COUNTER

RESET

PAUSE

fof

fofofefeafet

[-}

——

—

———

—

et

fr

ET

wo

REW

FF

PB

|

@

@

Ve

1C0O1

@5)

7.5¥p-(H)

RvOO7 Rvoo9

AVOOE

RVOO4

R.GAIN

Z

BRIGHT

cv2o1

1c201

cnoo2

CHARA]

CHARACTER

DISPLAY

010

R

=]

ete

fel

ely

el

4S

RP

eIGAIN

CTRL

|

R

ay

EXT

[BUFFER

rs]

6G

~

al

DRIVE

Ul

|

eur

BE]

SW

CLAMP

|

B

Q007

fl

as

ae

or

eres}

a009

i

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