Sony TRINITRON PVM-8020 Manual de usuario

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SERVICE

MANUAL

March,

1985

SPECIFICATIONS

NTSC

system’

Microblack

Trinitron

tube

8-inch

picture

measured

diagonally,

70-degree

deflection

Resolution

230

TV

lines

(B/W)

Color

temperature

9300°

K

Frequency

response

Color

system

Inputs

Picture

tube

4

MHz

(-3

dB)

Horizontal

linearity

+8%

Outputs

Vertical

linearity

+8%

Line

pull

range

Horizontal

+

500

Hz

Vertical

8

Hz

Overscan

of

the

picture

6%

Underscan

of

the

picture

5%

H/V

delay

Horizontal:

Approx.

1/4

line

Vertical:

Approx.

1/2

line

Return

loss

5

MHz,

—30

dB

(INPUT

A,

INPUT

B)

Zooming

Within

3

%

Convergence

Central

area

0.5

mm

Periphery

0.7

mm-

Brightness

More

than

50

foot-lamberts

MICROFILM

US

Model

Chassis

No.

SCC-629A-A

A

VIDEO

IN

(INPUT

A):

BNC

connector

VIDEO

(INPUT

B):

BNC

connector.

Composite

1V

p-p

+

6

dB,

75

ohms,

unbalanced,

sync

negative

AUDIO

IN

(INPUT

A):

minijack

AUDIO

(INPUT

B):

minijack

~—5

dBs,

47

k

ohms

or

more

VIDEO

OUT

(INPUT

A):

BNC

connector

VIDEO

(INPUT

B):

BNC

connector

1

V

p-p,

75

ohms,

unbalanced,

sync

negative

AUDIO

OUT

(INPUT

A):

minijack

AUDIO

(INPUT

B):

minijack

Output

level

0.8

W

TUNER

connector

6-pin

DIN

connector

Pin

No.

1:

not

in

use

Pin

No.

2:

video

input,

composite

1

V

p-p

+

6

dB,

75

ohms,

unbalanced,

sync

negative

Pin

No.

3:

ground

Pin

No.

4:

audio

input,

—5

dBs,

47

k

ohms

or

more

Pin

No.

5:

power

output

Pin

No.

6:

not

in

use

TRINITRON®

COLOR

VIDEO

MONITOR

SONY.

PVM-8020

VF-501

Power

requirements

.

120

V

ac,

50/60

Hz

12

V

de,

with

the

optional

Sony

NP-1

battery

pack

or

12

V

car

bat-

tery

using

the

optional

DCC-16AW

car

battery

cord

Power

consumption

47

W

ac,

max.

38

W

dc,

max.

Dimensions

(115/s

inches)

232mm

(94/4

inches)

293mm

(17/4

inches)

~

(942

inches)

Weight

Approx.

7.2

kg

(15

Ib

14

oz)

not

incl.

accessories

Accessories

supplied

AC

power

cord

(1)

Hood

(1)

Design

and

specifications

subject

to

change

without

notice.

OPTIONAL

ACCESSORIES

-

TV

tuner

unit

TU-1110

Battery

pack

NP-1

Car

battery

cord

DCC-16AW

POTS

PVM-8020

VE-501

Section

Title

Page

Section

Title

Page

1.

GENERAL

5.

DIAGRAMS

j-1.

Features

ec

eds

cis.

jee

helaa

dhs

LS

Se

faved

5

5-1.

Circuit

Boards

Location

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

30

1-2.

Precautions

.........00

0.

ce

cece

ee

ence

eee

5

5-2.

Block

Diagram

.............200¢s-

ceacte’

31

1-3,

Location

and

Function

of

Controls

.......

6

5-3.

Schematic

Diagrams

.................00-5

35

1-4.

Power

SOUICES

......

6.

cee

eee

eee

eee

10

5-4,

Semiconductors

........

0.00

e

eee

ee

eee

eee

42

1-5.

System

Connections

...........+-.-..005-

11

5-5.

Printed

Wiring

Boards

...............-+4.

43.

1-6,

Use

of

the

Stand

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

2c

eee

eee

12

6.

EXPLODED

VIEWS

1-7.

Attaching

the

Supplied

Hood.............

12

6-1.

Bezel,

Cabinet

Ass’y

..........0-..00e

eee

50

2.

DISASSEMBLY

6-2.

Cabinet

Bottom

ASs’y

...........0.ce

cence

51

2-1.

Cabinet

Removal

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

00.

ee

eens

13

6-3.

ChassisvASS

yoo

ate

ta

sied

Saat

eee

oe

52

2-2.

Bezel

Removal

(HA,

HB,

X

Board)

.......

13

7.

ELECTRICAL

PARTS

LIST

................0408

53

2-3.

Cabinet

Bottom

Removal.................

14

2-4.

DA

Board

Removal

.............e0

eee

eee

15

2-5.

BA,

BB

Board

Removal

............-.0045

15

2-6.

CRT

Removal

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

2

cece

eee

ees

16

3.

SET-UP

ADJUSTMENT

3-1.

Beam

Landing............

02.

e

eee

eee

17

3-2.

Focus

Adjustment............6

cece

ee

eee

17

3-3,

CONVETZENCE

00...

cece

eet

eee

ences

18

3-4,

White

Balance

.........6..

ee

ce

sence

eee

e

ee

19

4.

CIRCUIT

ADJUSTMENT

41.

BA

Board

Adjustments

..............-0065

20

4-2.

Safety

Related

Adjustments...............

23

4-3.

DA

Board

Adjustments

............--.05-

24

44.

BB

Board

Adjustments

.................5.

27

4-5,

HA

Board

Adjustments

............--+++5

28

WARNING

!!

AN

ISOLATION

TRANSFORMER

SHOULD

BE

USED

DURING

ANY

SERVICE

TO

AVOID

POSSIBLE

SHOCK

HAZARD,

BECAUSE

OF

LIVE

CHASSIS.

;

THE

CHASSIS

OF

THIS

RECEIVER

IS

DIRECTLY

CON-

NECTED

TO

THE

AC

POWER

LINE.

SAFETY-RELATED

COMPONENT

WARNING

!!

COMPONENTS

IDENTIFIED

BY

SHADING

AND

MARK

ON

THE

SCHEMATIC

DIAGRAMS,

EXPLODED

VIEWS

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

!N

SUPPLEMENTS

PUBLISHED

BY

SONY.

CIRCUIT

ADJUSTMENTS

THAT

ARE

CRITICAL

TO

SAFE

OPERATION

ARE

IDENTIFIED

IN

THIS

MANUAL.

FOLLOW

THESE

PRO-

CEDURES

WHENEVER

CRITICAL

COMPONENTS

ARE

REPLACED

OR

IMPROPER

OPERATION

IS

SUSPECTED.

*VM-8020

F-501

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

poorly-soldered

connections.

Check

the

entire

board

surface

for

solder

splashes

and

bridges.

2.

Check

the

interboard

wiring

to

ensure

that

no

wires

are

‘“‘pinched”

or

contact

high-wattage

resistors.

3.

Check

that

all

control

knobs,

shields,

covers,

ground

straps,

and

mounting

hardware

have

been

replaced.

Be

absolutely

certain

that

you

have

replaced

all

the

insulators.

4.

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.

5.

Look

for

parts

which,

though

functioning,

show

obvious

signs

of

deterioration.

Point

them

out

to

the

customer

and

recommend

their

replace-

ment.

6.

Check

the

line

cord

for

cracks

and

abrasion.

Recommend

the

replacement

of

any

such

line

cord

to

the

customer.

7.

Check

the

condition

of

the

monopole

antenna

(if

any).

Make

sure

the

end

is

not

broken

off,

and

has

the

plastic

cap

on

it.

Point

out

the

danger

of

impalement

on

a

broken

antenna

to

the

customer,

and

recommend

the

antenna’s

replacement.

8.

Check

the

B+

and

HV

to

see

they

are

at

the

values

specified.

Make

sure

your

instruments

are

accurate;

be

suspicious

of

your

HV

meter

if

sets

always

have

low

HV.

9.

Check

the

antenna

terminals,

metal

trim,

“metallized”

knobs,

screws,

and

all

other

exposed

metal

parts

for

AC

leakage.

Check

leakage

as

described

below.

To

Exposed

Metal

Parts

on

Set

AC

voltmeter

|

|

{0.75

V)

0.15

uF

=

Earth

Ground

Using

an

AC

voltmeter

to

check

AC

leakage.

—4—

LEAKAGE

TEST

The

AC

leakage

from

any

exposed

metal

part

to

earth

ground

and

from

all

exposed

metal

parts

to

any

exposed

metal

part

having

a

return

to

chassis,

must

not

exceed

0.5mA

(500

microampers).

Leakage

current

can

be

measured

by

any

one

of

three

methods.

1.

A

commercial

leakage

tester,

such

as

the

Simpson

229

or

RCA

WT-540A.

Follow

the

manufacturers’

instructions

to

use

these

instru+

ments.

2.

<A

battery-operated

AC

milliammeter.

The

Data

Precision

245

digital

multimeter

is

suitable

for

this

job.

3.

Measuring

the

voltage

drop

across

a

resistor

by

means

of

a

VOM

or

battery-operated

AC

volt-

meter.

The

“limit”

indication

is

0.75

V,

so

analog

meters

must

have

an

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

of

a

passive

VOM

that

is

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

a

2V

AC

range

are

suitable.

(See

Fig.

A)

HOW

TO

FIND

A

GOOD

EARTH

GROUND

A

cold-water

pipe

is

guaranteed

earth

ground;

the

cover-plate

retaining

screw

on

most

AC

outlet

boxes

is

also

at

earth

ground.

If

the

retaining

screw

is

to

be

used

as

your

earth-ground,

verify

that

it

is

at

ground

by

measuring

the

resistance

between

it

and

a

cold-

water

pipe

with

an

ohmmeter.

The

reading

should

be

zero

ohms.

If

a

cold-water

pipe

is

not

accessible,

connect

a

60—100

watts

trouble

light

(not

a

neon

lamp)

between

the

hot

side

of

the

receptacle

and

the

retaining

screw.

Try

both

slots,

if

necessary,

to

locate

the

hot

side

of

the

line,

the

lamp

should

light

at

normal

brilliance

if

the

screw

is

at

ground

potential.

(See

Fig.

B)

Trouble

Light

-

Ohmmeter

=

AC

Outlet

Box

N

Cold-water

Pipe

Fig.

B.

Checking

for

earth

ground.

PVM-8020

VF-501

SECTION

1

GENERAL

1-1.

FEATURES

Microblack™

Trinitron®

picture

tube

The

Microblack

Trinitron

picture

tube

gives

a

high

resolution,

high

contrast

picture.

Push-to-lock

controls

In

the

locked

position,

the

controls

are

protected

from

damage

during

carriage

of

the

unit.

The

protruding

posi-

tion

allows

easier

operation.

Monitor

of

sync

signals

The

HV-DELAY

switch

allows

horizontal

and

vertical

sync

signals

to

be

displayed

on

the

screen.

Blue

only

picture

By

using

the

B-ONLY

switch,

the

picture

can

be

displayed

in

blue

and

black

only,

facilitating

hue

adjust-

ment

or

observation

of

VTR

noise.

Underscan

mode

The

signal

normally

scanned

outside

of

the

screen

can

be

monitored

in

the

underscan

mode.

6-pin

DIN

tuner

connector

The

TUNER

connector

allows

easy

connection

of

a

TV

tuner,

which

is

equipped

with

the

6-pin

DIN

connector,

using

a

single

cable.

Three

power

sources

The

monitor

can

operate

on

either

house

current,

a

rechargeable

battery

or

a

12

V

car

battery,

allowing

use

indoors

or

outdoors.

The

battery

charge

function

is

incorporated.

1-2.

PRECAUTIONS

On

safety

@

Operate

the

unit

only

on

120

V

ac

or

12

V

dc.

For

ac

operation,

use

only

the

supplied

ac

power

cord.

Do

not

use

any

other

type.

For

battery

operation,

use

only

the

optional

NP-1

battery

pack.

Do

not

use

any

other

batteries.

For

car

battery

operation,

use

only

the

optional

DGC-16AW

car

battery

cord.

Do

not

use

any

other

car

battery

cord.

@

Should

any

liquid

or

solid

object

fall

into

the

cabinet,

unplug

the

unit

and

have

it

checked

by

qualified

person-

nel

before

operating

it

any

further.

@

Unplug

the

unit

from

the

wall

outlet

if it

is

not

to

be

used

for

several

days.

@To

disconnect

the

ac

power

cord,

pull

it

out

by

the

plug.

Never

pull

the

cord

itself.

On

installation

:

@

Allow

adequate

air

circulation

to

prevent

internal

heat

build-up.

Do

not

place

the

Unit

on

surfaces

(rugs,

blankets,

etc.)

or

near

materials

(curtains,

draperies)

that

may

block

the

ventilation

holes.

@

Do

not

install

the

unit

in

a

location

near

heat

sources

such

as

radiators

or

air

ducts,

or

in

a

place

subject

to

direct

sunlight,

excessive

dust,

mechanical

vibration

or

shock.

On

cleaning

To

keep

the

unit

looking

brand-new,

periodically

clean

it

with

a

soft

cloth.

Stubborn

stains

may

be

removed

with

a

cloth

lightly

dampened

with

a

mild

detergent

solution.

Never

use

strong

solvents

such

as

thinner

or

benzine,

or

abrasive

cleansers

since

these

will

damage

the

cabinet.

As

a

safety

precaution,

unplug

the

unit

before

cleaning

it.

On

repacking

Do

not

throw

away

the

carton

and

packing

materials.

They

make

an

ideal

container

in

which

to

transport

the

unit.

When

shipping

the

unit

to

another

location,

repack

it

as

illustrated

on

the

carton.

If

you

have

any

questions

about

this

unit,

contact

your

authorized

Sony

dealer.

2»VM-8020

'F-501

1-3.

LOCATION

AND

FUNCTION

OF

CONTROLS

FRONT

PANEL

oe

Carrying

handle

CHARGE

indicator

®

INPUT

select

switch

@

B-ONLY

switch

@

POWER

switch

HV-DELAY

switch

BATT

indicator

V

HOLD

control

VOL

control

SHARP

control

PICTURE

control

HUE

control

BRIGHT

control

COLOR

control

@

Carrying

handle

@

POWER

switch

To

turn

the

monitor

on,

depress

the

POWER

switch

(ON).

To

turn

it

off,

press

the

switch

again

(OFF).

©

BATT

(power/battery)

indicator

This

indicator

lights

when

the

power

is

turned

on.

When

the

rechargeable

battery

becomes

weak,

the

indicator

flashes

for

about

five

minutes.

Then

it

goes

out,

and

the

power

is

automatically

turned

off.

©

VOL

(volume)

control

.

Turn

this

control

clockwise

or

counterclockwise

to

ob-

tain

the

desired

volume.

@

PICTURE

control

Adjusts

the

contrast,

intensity

and

brightness

simul-

taneously

in

the

proper

ratio.

@

BRIGHT

(brightness)

control

Adjusts

the

brightness.

Normally

set

this

control

at

the

center

detent

position.

@

COLOR

control

Adjusts

the

color

intensity

of

the

picture.

Clockwise

rotation

makes

the

picture

more

vivid;

counterclockwise.

rotation

makes

it

paler.

©

HUE

control

Use

to

obtain

the

most

natura!

skin

tones.

Clockwise

rotation

makes

the

skin

tones

more

greenish;

counterclockwise

rotation

makes

them

more

purplish.

©

SHARP

(sharpness)

control

Adjusts

the

sharpness

of

the

picture.

Clockwise

rota-

tion

makes

the

picture

sharper;

counterclockwise

rota-

tion

makes

it

softer.

@

V

HOLD

(vertical

hold)

control

If

the

picture

rolls

vertically,

correct

it

with

this

control.

Before

turning

one

of

the

controls

@

to

@,

for

easier

operation

press

on

it

to

release

the

control

to

a

pro-

truding

position.

@

HV-DELAY

switch

Normally

keep

this.

switch

released

(NORM).

To

monitor

the

sync

signals,

depress

the

switch

(oH/V).

The

picture

is

shifted

horizontally

and

vertically.

The

horizontal

sync

is

displayed

in

left

approximately

one

quarter

of

the

screen

and

the

vertical

sync

is

displayed

near

the

center

of

the

screen.

®

B-ONLY

(blue only)

switch

Normally

keep

this

switch

released

(GNORM).

Depress

the

switch

(2

BLUE)

to

turn

off

the

red

and

green

beams.

The

picture

will

be

displayed

in

blue

and

black

only.

This

facilitates

hue

adjustment

or

observation

of

VTR

noise.

PVM-8020

VF-501

@®

SCAN

mode

select

switch

Keep

this

switch

released

(NORM)

for

normal.

scan-

ning.

Depress

the

switch

(aUNDER)

to

reduce

the

display

size

by

about

5%

(underscanning

mode)

and

to

view

a

picture

which

does

not

appear

in

normal

scanning.

@®

INPUT

select

switch

Keep

this

switch

released

(1A)

to

monitor

the

signal

from

the

INPUT

A

connectors.

Depress

the

switch

(8)

to

monitor

the

signal

from

the

INPUT

B

connectors.

®

CHARGE

indicator

Lights

during

charging.

When

charging

is

compliers

the

indicator

goes

out.

»VM-8020

‘F-501

REAR

PANEL

INPUT

B

21)

VIDEO

input/output

connector

INPUT

A

—)

750

termination

switch

VIDEO

IN

connector

G

&)

AUDIO

input/output

connector

750

termination

switch

@

TUNER

connector

VIDEO

OUT

connector

3

€

RIGIB

BKG

controls

AUDIO

IN

connector

€

RIGIB

DRIVE

conitrols

AUDIO

OUT

connector

@)

531)

EXT

BATTERY

DG

IN

12V

jack

1)

OPERATE/CHARGE

select

switch

AC

IN

socket

EJECT

buttons

Battery

compartments

@

INPUT

A

To

monitor

the

input

signals

connected

to

these

con-

nectors,

keep

the

INPUT

select

switch

released

(GA).

@®

VIDEO

IN

connector

(BNC

type)

Connect

to

the

video

output

of

video

equipment,

such

as

a

VTR

or

acolor

video

camera.

@®

750

termination

switch

When

only

the

VIDEO

IN

connector

is

used

(the

VIDEO

OUT

connector

is

not

used),

set

this

switch

to

ON.

When

both

the

VIDEO

IN

and

VIDEO

OUT

connectors

are

used

together

for

a

loop-through

connection,

set

the

switch

to

OFF.

@®

VIDEO

OUT

connector

(BNC

type)

Loop-through

output

of

the

VIDEO

IN

connector.

Con-

nect

to

the

video

input

of

a

VTR

or

another

monitor.

@®

AUDIO

IN

connector

(minijack)

Connect

to

the

audio

output

of

a

VTR

or

to

a

micro-

phone

(through

a

suitable:

microphone

amplifier).

@

AUDIO

OUT

connector

(minijack)

Loop-through

output

of

the

AUDIO

IN

connector.

Con-

nect

to

the

audio

input

of

a

VTR

or

another

monitor.

INPUT

B

To

monitor

the

input

signals

to

these

connectors,

depress

the

INPUT

select

switch

(=B).

@

VIDEO

input/output

connector

(BNC

type)

Connect

to

the

video

output

of

a

VTR

or

a

color

video

camera.

When

a

TV

tuner

is

connected

to

the

TUNER

connector

and

the

75Q

termination

switch

@

is

set

to

OFF,

this

connector

can-be

used

as

a

loop-through

output

of

the

TUNER

connector.

Connect

to

the

video

input

of

a

VTR

or

another

monitor.

:

@

750

termination

switch

Normally

set

this

switch

to

ON.

When

both

the

TUNER

and

VIDEO

connectors

are

used

together

for

a

loop-

through

connection,

set

the

switch

to

OFF.

@

AUDIO

input/output

connector

(minijack)

Connect

to

the

audio

output

of

a

VTR

or

to

a

micro-

phone

(through

a

suitable

microphone

amplifier).

When

a

TV

tuner

is

connected

to

the

TUNER

connector

and

the

752

termination

switch

@

is

set

to

OFF,

this

connector-can

be

used.as

a

loop-through

output

of

the

TUNER

connector.

Connect

to

the

audio

input

of

a

VTR

or

another

monitor.

@

TUNER

connector

(6-pin

DIN)

Connect

to

the

6-pin

DIN

connector

of

a

TV

tuner.

The

video

and

audio

signals

are

supplied

to

the

monitor

and

the

power

from

the

monitor

is

fed

to

the

tuner

using

a

single

cable.

PVM-8020

VF-501

Note

The

TUNER

input

and

the

VIDEO/AUDIO

inputs

@,

®

cannot

be

used

simultaneously.

When

connecting

a

TV

tuner

to

the

monitor,

be

sure

to

disconnect

any

input.

source

equipment

from

the

VIDEO

and

AUDIO

connec-

tors,

or

vice

versa.

@®

R/G/B

BKG

(background)

controls

Used

for

adjusting

the

white

balance

of

the

background.

@

RIG/B

DRIVE

controls

Used

for

adjusting

the

white

balance

at

the

white

peak.

@

AC

IN

socket

Connect

the

supplied

ac

power

cord.

@

Battery

compartments

Insert

the

NP-1

battery

pack.

@

EJECT

buttons

Press

the

EJECT

button

upwards

to

remove

the

battery

pack.

—

@

OPERATE/CHARGE

select

switch

Normally

set

this

switch

to

OPERATE.

To

charge

the

battery

pack,

set

to

CHARGE.

The

CHARGE

indicator

on

the

front

panel

lights.

When

charging

is

complete,

the

CHARGE

indicator

goes

out;

reset

the

switch

to

OPERATE.

@

EXT

BATTERY

(external

battery)

DC

IN

12

V

jack

Connect

the

optional

DCC-16AW

car

battery

cord.

2VM-8020

1-4.

POWER

SOURCES

HOUSE

CURRENT

Connect

the

supplied

ac

power

cord

to

the

AC

IN

socket

and

to

a

wail

outlet

(120

V

ac).

to

a

wall

outlet

When

the

ac

power

cord

is

plugged

into

the

AC

IN

socket,

the

battery

pack

(if

installed)

or

the

car

battery

(if

connected)

is

automatically

disconnected.

RECHARGEABLE

BATTERY

Insert

the

Sony

NP-1

battery

pack

(optional)

into

the

bat-

tery

compartment

as_

illustrated.

The

monitor

can

operate

with

one

or

two

battery

packs.

For

extended

use,

two

battery

packs

are

recommended.

EJECT

buttons

SONY

mark

OPERATE/CHARGE

switch

downwards

To

remove

the

battery

pack,

press

the

EJECT

button

upwards.

Note

:

Make

sure

that

the

ac

power

cord

and

the

car

battery

cord

are

disconnected

from

the

monitor.

Otherwise,

the

monitor

cannot

operate

on

the

battery

pack(s).

Caution

Do

not

use

any

other

batteries

than

the

NP-1,

even

if

any

can

be

inserted

into

the

compartment.

Charging

the

battery

pack

Before

using

the

monitor,

be

sure

to

fully

charge

the

bat-

tery

pack.

The

charging

time

is

about

6

hours

at

normal

temperatures.

1

Connect

the

supplied

ac

power

cord

to

the

AC

IN

socket

and

then

to

a

wall

outlet.

2

Insert

the

battery

pack(s)

into

the

battery

com-

partment(s).

3

Set

the

OPERATE/CHARGE

switch

to

CHARGE.

4

Depress

the

POWER

switch.

The

CHARGE

indicator

lights

and

charging

begins.

When

charging

is

complete,

the

CHARGE

indicator

goes

out.

Be

sure

to

reset

the

OPERATE/CHARGE

switch

to

OPERATE.

When

the

OPERATE/CHARGE

switch

is

set

to

CHARGE,

the

picture

cannot

be

monitored.

@For

quicker

charging,

use

the

optional

BC-1WA

bat-

tery

charger

for

NP-1.

Battery

life

At

normal

temperatures,

the

picture

can

be

monitored

continuously

for

about

60

minutes

using

two

battery

packs

and

operating

the

TV

tuner

connected

to

the

monitor.

When

the

TV

tuner

is

not

used,

longer

battery

life

can

be

expected

(about

75

to

80

minutes).

When

the

battery

is

exhausted,

the

green

BATT

in-

dicator

flashes

for

about

five

minutes,

and

then

the

power

is

turned

off

automatically

to

prevent

excessive

battery

discharge.

When

the

BATT

indicator

goes

off,

press

the

POWER

switch

and

replace

the.

exhausted

°

battery

pack(s)

with

fully

charged

one(s),

or

use

another

power

source.

CAR

BATTERY

Use

the

Sony

DCC-16AW

car

battery

cord

(optional)

fora

42

V

car

battery.

Connect

the

car

battery

cord

to

the

EXT

BATTERY

DC

IN

12

V

jack

and

to

the

cigarette

lighter

socket

of

a

car.

For

further

details,

read

the

instruction

manual

of

the

car

battery

cord.

to

a

cigarette

lighter

socket

to

EXT

BATTERY

DC

IN

12

V

When

the

car

battery

cord

is

plugged

into

the

EXT

BAT-

TERY

DC

IN

12

V

jack,

the

battery

pack

(if

installed)

is

disconnected

automatically.

Note

Use

only

the

recommended

car

battery.

cord

manufac-

tured

by

Sony.

Polarity

of

the

plugs

of

other

manufac-

turers

may

be

different.

Polarity

of

the

plug

of

Sony

car

battery

cord

:

—10—