JVC TM-41 EG Manuale utente

JVG

Service

Manual

COLOUR

VIDEO

MONITOR

more.

TM-41

EG/EK

VICTOR

COMPANY

JAPAN,

LIMITED.

JVC

Service

Manual

move.

TM-41

EG/EK

VICTOR

COMPANY

JAPAN,

LIMITED.

TABLE

CONTENTS

GENERAL

DESCRIPTION

INTRODUCTION

FEATURES

SPECIFICATIONS

PRECAUTIONS...........

HANDLING

CONTROLS

AND

CONNECTORS

POWER

SUPPLY

.........

RECHARGING

THE

PBP-1

BATTERY

PACK

CONNECTIONS

DISASSEMBLY

TOPCOVER......

POWER

CORD

ASSEMBL

FRONTPANEL....

CRT

sjagts

stay

etind

hte

stot

VIDEO/AUDIO

BOARD-1.

-8

VIDEO/AUDIO

BOARD-2

NRNVNANNYONNN

ALIGNMENT

PROCEDURE

VOLTAGE

(10.5Vj

............0..

PAL

COLOR

CIRCUIT

ADJUSTMENT

SECAM

COLOR

CIRCUIT

ADJUSTMENT

PURITY

......

ate

CONVERGENCE

...

WHITE

BALANCE

...............-4,

SUB-CONTRAST

AND

SUB-BRIGHTNESS

SUB-COLOR

WOWKKWYAWWYW

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EXPLODED

VIEWS

AND

PARTS

LIST

5.1

SAFETY

PRECAUTION

5,2

GENERAL

RULER

FOR

NUMBERING

METHOD

SCREW/WASHER/E-RING

5.3)

GENERAL:

ASSEMBLY

22:2.

.0e°sfese

eis

aoma

nqiestin

bd:

ogo

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ates

ergeS

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DIAGRAMS-AND.

CIRCUIT

BOARDS

6.1

BLOCK

DIAGRAM

............

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die

SOE

ase

SMT

6-1

NNN

waVNonhwnu

ELECTRICAL

PARTS

LIST

MAIN

P.W.B.

ASSEMBLY

PAL/SECAM

P.W.B.

ASSEMBLY

POWER

P.W.B.

ASSEMBLY

VIDEO/AUDIO

BOARD-1

toate

VIBDEO/AUDIO

BOARD-2........

POWER

SWITCH

P.W.B,

ASSEMBLY

VOLUME

P.W.B,

ASSEMBLY

.....

CRT

SOCKET

P.W.B.

ASSEMBLY

COLOR

SYSTEM

P.B.W.

ASSEMBLY

L.E.D.

P.W.B.

ASSEMBLY

......,-.-0-05

.11

JACK

P.W,B,

ASSEMBLY

...

0.2.0...

eee

SECTION

GENERAL

DESCRIPTION

1.1.

INTRODUCTION

This

manual

provides

service

information

for

the

JVC

TM-41EG/EK

Color

Video

Monitor.

The

manual

de-

scribes

the

instruction

and

adjustment

electrical

operation.

Service

procedures

given

herein

cover

only

field

maintenance

services.

Adjustments

which

require

high-level

instruments,

jigs

and

techniques

are

excluded,

since

they

should

per-

formed

the

factory.

Due

design

modifications,

the

service

procedures

and

data

given

this

manual

are

subject

posssible

change

without

prior

notice.

WARNING:

PREVENT

FIRE

SHOCK

HAZARD,

NOT

EXPOSE

THIS

UNIT

RAIN

MOISTURE.

POWER

SYSTEM

The

operating

voltage

this

set

preset

220

~(EK-version:

240

V~\}

the

factory.

Before

connectiong

mains,

check

that

the

vol-

tage

selector

the

rear

panel

set

the

same

voltages

your

local

mains

supply.

Adapting

local

power

line

This

set

operates

either

110,

127,

220

240

Vv.

The

voltage

selector

can

reset

follows.

Turn

the

voltage

selector

using

screw-

driver

until

the

proper

voltage

appears

the

cutout.

IMPORTANT

{In

the

United

Kingdom)

Mains

Supply

(AC

240

Vv,

only)

IMPORTANT

not

make

any

connection

the

Larger

Ter-

minal

coded

Green,

The

wires

the

mains

lead

are

coloured

accordance

with

following

code:

[ees

Blue

{Neutral}

Black

Brown

(Live)

Red

these

colours

not

correspond

with

the

terminal

identifications

your

plug,

connect

follows:

Blue

wire

terminal

coded

(Neutral)

coloured

Black.

Brown

wire

terminal

coded

(Live)

coloured

Red.

Connection

the

mains

suppiy

MAINS

POWER

SWITCH

The

mains

power

switch

located

the

rear

connector

panel,

Setting

this

switch

OFF

removes

all

applied

power

from

the

unit.

1.2

FEATURES

PAL/SECAM

switchable

colour

system

with

three-

position

switch

for

PAL,

AUTO

and

SECAM.

Compact,

lightweight

and

handy

use.

®@

G-inch

(13-cm

viewing

area)

in-line

black

stripe

picture

tube

capable.

accurate,

well-defined

colour

reproduction.

Flexible

AC/DC

power

supply

—

household

built-in

exclusive

rechargeable

battery

pack

—

enabling

both

indoor

outdoor

use.

Built-in

speaker

enabling

simultaneous

audio

and

video

monitoring.

Dual

circuits

provided

for

audio

and

video

signals.

LED

indicator

warn

jow

battery

power.

Recharging

the

exclusive

battery

pack

PBP-1

(optional)

possible

with

the

AA-PATEG/EK/S

Power

Adapter

(optional).

1.3.

SPECIFICATIONS

Colour

video

monitor

PAL/SECAM

switchable

+6”

(13-cm

viewing

area)

110/427/220/240

AC,

{exclusive

battery

pack

PBP-1}

(AC)

(DC)

{about

1.5

hours

with

fully

charged

battery

pack)

Vp-p

circuits}

Input

impedance

—

OPEN/75

ohms

selectable

Vp-p,

ohms

—6

dBs

(more

than

ohms)

1-6

dBs

dia,

(16

ohms)

500

110°

+40°

10°

70°

22.0(W)

13.5(H)

x34.5(D)

r4..kg

Hood,

Power

cord,

Earphone

Auilio

cable,

Video

cable

Type

Colour system

Picture

tube

Power

requirement

Power

consumption

Video

input

Video

output

Audio

input

Audio

output

Built-in

speaker

Speaker

output

Operating

temperature

Storage

temperature

Dimensions

Weight

Accessories

Design

and

speciticarians

subject

change

without

notice,

1.4

PRECAUTIONS

vent

inflammables,

water

and

metallic

objects

entering

the

unit.

not

remodel

disassemble

the

unit.

the

unit

incorporates

circuitry

generating

high

voltage,

physical

danger

and

malfunctioning

the

unit

itself

may

result.

Remove

the

power

cord

from

the

outlet

when

you

are

not

using

the

unit

for

long

period.

not

damage

the

power

cord,

This

could

result

electric

shock,

1:5

HANDLING

not

apply

shocks

vibrations.

Malfunctioning

the

unit

likely

result,

not

place

the

unit

near

appliances

generating

strong

electric

magnetic

fields.

Noisy

unstable

pictures

are

likely

result.

not

use

extremely

hot

places.

Exposed

the

direct

sunlight

for

!ong

period

time

placed

near

heater,

the

cabinet

could

become

deformed,

1-2

the

performance

the

internal

components

may

deteriorate.

Special

attention

required

summer.

Inside

closed

car

the

temperature

can

climb

high

80°

the

summer

sun.

Keep

the

monitor

clean

wiping

the

cabinet

and

the

CRT

screen

with

piece

soft

cloth.

not

apply

thinner

benzine.

These

chemicals

can

damage

the

surface

finish

and

cause

printed

letters

erased

Ciean

excessive

soiling

with

diluted neutral

cleanser,

then

wipe

away

the

cleanser

with

dry

cloth.

not

block

the

ventilation

slots.

For

outdoor

usage

Apply

screen

hood

(provided)

outdoors

eliminate

reflections

The

monitor

can

inclined

erecting

the

stands

the

bottom,

Fig.

1-7

1.6

CONTROLS

AND

CONNECTORS

BRIGHTness

control

knob

Tur

counterclockwise

darken

the

picture

and

clockwise

illumine

it.

CONTRAST

control

knob

Tum

counterclockwise

soften

contrast

anc

clockwise

sharpen.

COLOUR

control

knob

Turn

clockwise

deepen

the

colour

tone

and

vice

versa.

TINT

control

knob

Turn

counterclockwise

emphasize

reds

and

clockwise

emphasize

greens,

Normally

set

this

knob

its

center

click-stop

position.

EARPHONE

jack.

Plug

the

provided

earphone;

audio

monitoring

possible.

BATT

ALARM

indicator

This

iamp

lights

green while

the

unit

being

operated

power.

this

lamp

lights

red

during

battery

operation,

indicates

that

the

battery

pack

installed

the

unit

nearing

the

end

its

power.

Immediately

recharge

the

battery

pack

replace

with

fresh

one.

Fig.

1-2

{a}

13°14

Fig.

1-2

(b)

INPUT

SELECT

“VTR™

switch

Push

this

switch

monitor

audio

and

video

signals

from

unit

connected

the

VTR

input

terminals

the

rear

panel.

INPUT

SELECT

“LINE”

switch

Push

this

switch

monitor

audio

and

video

signals

from

unit

connected

the

LINE

input

connectors

and

@4)

the

rear

panel.

OFF/VOLUME

control

knob

Turn

this

switch

clockwise

dill

clicks

for

power-

ing

the

TM-44EG/EK.

turing

the

knob

further

you

can

adjust

the

volume

the

audio.

Turn

the

knob

fuliy

counterclockwise

remove

power

from

the.unit.

Make

rude

put

this

switch

the

OFF

position

after

operating

the

unit

and

before

recharging

the

installed

battery

pack.

10.

Ww.

12,

13.

Battery

compartment

Install

the

exclusive

PBP-1

battery

pack

(optional)

here.

MAINS

POWER

switch

Switching

applies

mains

power

the

set.

switch

off

the

set

completely,

set

the

power

switch

OFF,

socket

Using

the

provided

power

cord,

connect

the

terminal

the

monitor

outlet.

When

this

terminal

being

used,

the

installed

battery

cannot

employed.

Make

rule

unplug

the

power

cord

from

this

terminal

when

employing

the

exclusive

battery

pack.

VOLTAGE

SELECTOR

reset

the

operating

voltage,

see

“POWER

SYSTEM”

page

1-1.

15.

16.

17,

18,

19,

20.

24.

22,

23.

24.

25.

26,

27,

V/CHARGE

socket

Recharging

the

installed

battery

pack

possible

connecting

the

output

plug

the

AA-

P41EG/EK/S

Power

Adapter

this

terminal.

HOLD

control

Turn

counterclockwise

when

the

picture

slanting

the

right

and

clockwise

when

slanting

the

left.

V.HOLD

control

Turn

either

direction

stop

vertical

rolling

the

picture.

HEIGHT

control

Turn

either

direction

adjust

the

picture

it's

too

narrow

elongated,

using

screwdriver,

VTR

(8-pin)

connector

Connect

the

monitor

the

video/audio

monitor

terminal

VTR

other video

sources.

VTR

termination

switch

Set

this

switch

terminate

the

input

signals

the

VTR

connected

the

8-pin

connector

(8)

set

OPEN

make

these

signals

available

the

VTR

AUDIO

and

VIDEO

inpuvVoutput

connectors

and

VTR

AUDIO

input/output

DIN

socket

VTR

VIDEO

input/output

connector

Connect

the

audio

and

video

outputs

from

video

tape

recorder

other

video

sources

these

two

connectors.

use

these

connectors

produce

signals

bridged

from

the

VTR

connected

the

8-pin

connector

PAL/AUTO/SECAM

colour

system

select

switch

PAL:

—

Set

this

position

when

the

input

signal

conforms

PAL.

AUTO:

The

circuit

automatically

switched

either

for

PAL

SECAM

depending

the

input

signal.

This

position

sufficient

for

most

purposes.

SECAM:

Set

this

position

when

the

input

signal

conforms

SECAM,

VIDEO

LINE

AUDIO

LINE

DIN

connector

Connect

the

audio

and

video

outputs

from

video

tape

recorder

other

video

sources

monitored

these

two

connectors.

OUTPUT

VIDEO

connector

OUTPUT

AUDIO

DIN

socket

Use

these

connectors

produce

audio

and

video

signals

being

monitored

with

the

front

panel

input

select

switches

bridged

from

the

LINE

connectors

and

@3)

termination/OUTPUT

select

switch

Set

this

switch

terminate

the

input

signals

connected

the

LINE

VIDEO

and

AUDIO

connectors

and

@4)

set

this

switch

OPEN

BRIDGE

OUT

when

you

wish

make

avilabie

the

OUTPUT

VIDEO

and

AUDIO.

connectors

and

@6)

signals

connected

the

LINE

connectors

and

@4)

(“Fe

smionitor

etgnals

applied

the

&-pin

VTR

connector’

the

audio

and

video

inpury

output

connectors

and

@})

push

the

front

penel

INPUT

SELECT

“VTR”

switch,

monitor

signals

applied

the

video

and

audio

LINE

connectors

and

push

the

front

panel

INPUT

SELECT

“LINE”

switch.

1.7

POWER

SUPPLY

Using

outlet

Plug

the

provided

power

cord

into

outlet.

Fig.

1-3

The

monitor

cannot

powered

from

the

battery

]

pack

the

power

cord

plugged

into

the

Monitor.

Make

sure

the

power

cord

discon-

nected

from

the

monitor

before

the

battery

pack

used.

Installing

the

exclusive

PBP-1

battery

pack:

Loosen

the

screw

the

battery

compartment

cover

the

rear

panel

the

unit

and

remove

the

cover.

Insert

the

battery

pack

with

its

cord

outward

and

Power

Adapter

can

recharge

two

PBP-1.

battery

packs

the

blue

ribbon

top

the

battery

pack.

simultaneously;

one

installed

inside

the

monitor

and

the

other

separate

from

the

unit

—

spare

battery.

Plug

the

provided

power

cord

into

the

terminal

the

AA-P41EG/EK/S.

Connect

the

Power

adapter

power

supply.

When

the

battery

pack

installed

within

the

monitor

recharged,

connect

the

output

cable

the

adapter

the

V/CHARGE

connector,

The

monitor

should

set

OFF.

The

battery

cannot

recharged

unless

the

OFF/VOLUME

Fig,

1-5

control

knob

positioned

Plug

the

battery

cord

into

the

socket

near

the

opening

and

replace

the

cover,

Fig.

1-8

When

spare

battery

pack

recharged

simultaneously,

connect

the

PBP-1

battery

pack

the

EXT

BATTERY

terminal

the

adapter,

—

the

BATT

ALARM

indicator

should

tight

red

after

installing

the

battery

pack,

recharge

replace

the

battery

pack

with

fresh

one,

battery

pack

running

out

power

should

recharged

immediately.

Fig.

1-9

1.8

RECHARGING

THE

PBP-1

BATTERY

PACK

Set

the

adapter’s

power

switch

ON.

Recharging

will

begin.

The

AA-P4TEG/EK/S

Power

Adapter

required

Check

the

charging

condition

with

the

meter

rechange

the

exclusive

PBP-1.

The

AA-P41EG/EK/S

provided

the

adapter.

Fig.

1-7

Meter

select

switch

VCR

BATTERY:

check

the

charging

condition

the

battery

pack

installed

the

monitor.

EXT

BATTERY:

check

the

charging

condition

the

battery

pack

directly

connected

the

power

adapter.

NOTE:

About

hours

are

required

fully

charge

the

battery

pack,

However,

it is

recommendable

con-

How

check

the

charging

condition

tinue

charging

little

longer

fabout

10—12

hours).

The

meter

needle

deflects

the

right

when

charging

starts.

Exclusive

PBP-1

battery

pack

not

short-circuit

the

outer

rim

the

piug

‘ts

centre

pin.

Even

when

you

are

not

using

the

battery

pack

for

long

period

time,

recharge

from

time

This

because

the

battery

pack

will

gradually

dis-

Fig.1-11

charge

itself.

Ajways

recharge

the

battery

pack

after

use

and

store

The

meter

needle

deflects

towards

the

left

100%

charged.

charging

proceeds.

Once

the

battery

pack

fully

discharged,

becomes

unusable.

The

PBP-1

lead/acid

battery.

Therefore,

when

used

temperatures

below

5°

(41°

F),

its

capacity

may

reduced

much

half.

Fig.

1-12

aft

When

the

meter:

needle

points

FULL,

the

battery

has

been

fully

charged,

Plug

1.9

CONNECTIONS

Using

combination

with

JVC

VHS

recorder

The

TM-41EG/EK

most

convenient

when

you

use

combination

with

portable

recorder

and

camera

Fig.

1-14

monitor

camera

work

when

operating

outdoors.

Meter

select

switch

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