Samsung SVR-433 User manual

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ELECTRONICS

©

Sarrsung

Hectronics

Co.,

Ltd.

APR.

2000

Printed

in

Korea

/AAC68-00806A,

TWANVWIW

JDIANSS

TET/TOEZ/

MOEZ/

BOEZ/EEZ/EED-UAS

SERVICE

Manual

For

rrecharical

disassembly

and

adjustrrent,

refer

to

the

“Mechanical

Manual”

(DX-9R—>

AC68-00001A).

LP

ti

2.

Alignmrert

and

Ac§ustrert

3.

Exploded

View

and

Parts

List

4.

Bectical

Parts

List

5

Schematic

Diagrams

)

IMPORTANT

SERVICEGUIDE

>}

MODE

SWITCH

(PROGRAM

SWITCH)

ASSEMBLY

POINT

1)

When

installing

the

ass’y

full

deck

on

the

M

ain

PCB,

be

sure

to

align

the

assembly

point

of

mode

switch.

Fig.

1

HOW

TO

EJ

ECT

THE

CASSETTE

TAPE

(If

the

unit

does

not

operate

on

condition

that

tape

is

inserted

into

housing

ass’y)

1)

Remove

the

Holder

Worm

@

and

the

gear

worm

@.

(See

Fig.

2)

2)

Turn

the

Gear

Worm

Wheel

@

counterclockwise

in

the

direction

of

arrow

with

screw

driver.

(See

Fig.

2)

3)

When

Slider

S,

T

are

approached

in

the

position

of

unloading,

rotate

holder

Clutch

counterclockwise

after

inserting

screw

driver

in

the

hole

of

frame's

bottom

in

order

to

wind

the

unwounded

tape.

(Refer

to

Fig.

3)

(If

you

rotate

Gear

W

orm

Wheel

continuously

when

tape

is

in

state

of

unwinding,

you

may

cause

a

tape

contamination

by

grease

and

tape

damage.

Be

sure

to

wind

the

unwounded

tape

in

the

state

of

set

horizontally.)

4)

Rotate

Gear

Worm

Wheel

@

counterclockwise

using

screw

driver

again

up

to

the

state

of

eject

mode

and

then

pick

out

the

tape.

(Refer

to

Fig.

2)

©

GEAR

WORM

WHEEL

SCREW

DRIVER

iao—

HOLDER

WORM

Fig.

2

Fig.

3

1,

Precautions

1.

Be

sure

that

all

of

the

built-in

protective

devices

are

replaced.

Restore

any

missing

protective

shields.

2.

When

reinstalling

the

chassis

and

its

assemblies,

be

sure

to

restore

all

protective

devices,

including

:

control

knobs

and

compartment

covers.

3.

Make

sure

that

there

are

no

cabinet

openings

through

which

people--particularly

children

--might

insert

fingers

and

contact

dangerous

voltages.

Such

openings

include

the

spacing

between

the

picture

tube

and

the

cabinet

mask,

excessively

wide

cabinet

ventilation

slots,

and

improperly

fitted

back

covers.

If

the

measured

resistance

is

less

than

1.0

megohm

or

greater

than

5.2

megohms,

an

abnormality

exists

that

must

be

corrected

before

the

unit

is

returned

to

the

customer.

4.

Leakage

Current

Hot

Check

(See

Fig.

1-1)

:

Warning

:

Do

not

use

an

isolation

transformer

during

this

test.

Use

a

leakage

current

tester

or

a

metering

system

that

complies

with

American

National

Standards

Institute

(ANSI

C101.1,

Leakage

Current

for

Appliances),

and

Underwriters

Laboratories

(UL

Publication

UL1410,

59.7).

5.

With

the

unit

completely

reassembled,

plug

the

AC

line

cord

directly

the

power

outlet.

With

the

unit’s

AC

switch

first

in

the

ON

position

and

then

OFF,

measure

the

current

between

a

known

earth

ground

(metal

water

pipe,

conduit,

etc.)

and

all

exposed

metal

parts,

including

:

antennas,

handle

brackets,

metal

cabinets,

screwheads

and

control

shafts.

The

current

measured

should

not

exceed

0.5

milliamp.

Reverse

the

power-plug

prongs

in

the

AC

outlet

and

repeat

the

test.

6.

X-ray

Limits

:

The

picture

tube

is

designed

to

prohibit

X-ray

emissions.

To

ensure

continued

X-ray

protection,

replace

the

picture

tube

only

with

one

that

is

the

same

type

as

the

original.

Samsung

Electronics

(READING

SHOULD

NOT

BE

ABOVE

0.5mA)

DEVICE

UNDER

TEST

[LU

TEST

ALL

EXPOSED

METER

SURFACES

2-W

IRE

CORD

ALSO

TEST

WITH

PLUG

REVERSED

+

aROuG

(USING

AC

ADAPTER

ies

PLUG

AS

REQUIRED)

Fig.

1-1

AC

Leakage

Test

7.

Antenna

Cold

Check

:

With

the

unit’s

AC

plug

disconnected

from

the

AC

source,

connect

an

electrical

jumper

across

the

two

AC

prongs.

Connect

one

lead

of

the

ohmmeter

to

an

AC

prong.

Connect

the

other

lead

to

the

coaxial

connector.

8.

High

Voltage

Limit

:

High

voltage

must

be

measured

each

time

servicing

is

done

on

the

B+,

horizontal

deflection

or

high

voltage

circuits.

Heed

the

high

voltage

limits.

These

include

the

X-ray

protection

Specifications

Label,

and

the

Product

Safety

and

X-ray

Warning

Note

on

the

service

data

schematic.

9.

Some

semiconductor

(“solid

state”)

devices

are

easily

damaged

by

static

electricity.

Such

components

are

called

Electrostatically

Sensitive

Devices

(ESDs);

examples

include

integrated

circuits

and

some

field-effect

transistors.

The

following

techniques

will

reduce

the

occurrence

of

component

damage

caused

by

static

electricity.

10.

Immediately

before

handling

any

semiconductor

components

or

assemblies,

drain

the

electrostatic

charge

from

your

body

by

touching

a

known

earth

ground.

Alternatively,

wear

a

discharging

Wrist-strap

device.

(Be

sure

to

remove

it

prior

to

applying

power--this

is

an

electric

shock

precaution.)

1-1

Precautions

11.

High

voltage

is

maintained

within

specified

limits

by

close-tolerance,

safety-related

components

and

adjustments.

If

the

high

voltage

exceeds

the

specified

limits,

check

each

of

the

special

components.

12.

Design

Alteration

Warning

:

Never

alter

or

add

to

the

mechanical

or

electrical

design

of

this

unit.

Example

:

Do

not

add

auxiliary

audio

or

video

connectors.

Such

alterations

might

create

a

safety

hazard.

Also,

any

design

changes

or

additions

will

void

the

manufacturer’s

warranty.

13.

Hot

Chassis

Warning

:

Some

TV

receiver

chassis

are

electrically

connected

directly

to

one

conductor

of

the

AC

power

cord.

If

an

isolation

transformer

is

not

used,

these

units

may

be

safely

serviced

only

if

the

AC

power

plug

is

inserted

so

that

the

chassis

is

connected

to

the

ground

side

of

the

AC

source.

To

confirm

that

the

AC

power

plug

is

inserted

correctly,

do

the

following

:

Using

an

AC

voltmeter,

measure

the

voltage

between

the

chassis

and

a

known

earth

ground.

If

the

reading

is

greater

than

1.0V,

remove

the

AC

power

plug,

reverse

its

polarity

and

reinsert.

Re-measure

the

voltage

between

the

chassis

and

ground.

14.

Some

TV

chassis

are

designed

to

operate

with

85

volts

AC

between

chassis

and

ground,

regardless

of

the

AC

plug

polarity.

These

units

can

be

safely

serviced

only

if

an

isolation

transformer

inserted

between

the

receiver

and

the

power

source.

15.

Never

defeat

any

of

the

B+

voltage

interlocks.

Do

not

apply

AC

power

to

the

unit

(or

any

of

its

assemblies)

unless

all

solid-state

heat

sinks

are

correctly

installed.

16.

Always

connect

a

test

instrument’s

ground

lead

to

the

instrument

chassis

ground

before

connecting

the

positive

lead;

always

remove

the

instrument's

ground

lead

last.

17.

Observe

the

original

lead

dress,

especially

near

1-2

the

following

areas

:

Antenna

wiring,

sharp

edges,

and

especially

the

AC

and

high

voltage

power

supplies.

Always

inspect

for

pinched,

out-

of-place,

or

frayed

wiring.

Do

not

change

the

spacing

between

components

and

the

printed

circuit

board.

Check

the

AC

power

cord

for

damage.

Make

sure

that

leads

and

components

do

not

touch

thermally

hot

parts.

18.

Picture

Tube

Implosion

Warning

:

The

picture

tube

in

this

receiver

employs

“integral

implosion”

protection.

To

ensure

continued

implosion

protection,

make

sure

that

the

replacement

picture

tube

is

the

same

as

the

original.

19.

Do

not

remove,

install

or

handle

the

picture

tube

without

first

putting

on

shatterproof

goggles

equipped

with

side

shields.

Never

handle

the

picture

tube

by

its

neck.

Some

“in-line”

picture

tubes

are

equipped

with

a

permanently

attached

deflection

yoke;

do

not

try

to

remove

such

“permanently

attached”

yokes

from

the

picture

tube.

20.

Product

Safety

Notice

:

Some

electrical

and

mechanical

parts

have

special

safety-related

characteristics

which

might

not

be

obvious

from

visual

inspection.

These

safety

features

and

the

protection

they

give

might

be

lost

if

the

replacement

component

differs

from

the

original--even

if

the

replacement

is

rated

for

higher

voltage,

wattage,

etc.

Components

that

are

critical

for

safety

are

indicated

in

the

circuit

diagram

by

shading,

(A\

or

A\).

Use

replacement

components

that

have

the

same

ratings,

especially

for

flame

resistance

and

dielectric

strength

specifications.

A

replacement

part

that

does

not

have

the

same

safety

characteristics

as

the

original

might

create

shock,

fire

or

other

hazards.

Samsung

Electronics

2.

Alignment

and

Adjustment

2-1

Reference

1)

X-Point

(Tracking

center)

adjustment,

“Head

switching

adjustment”

and

“NVRAM

option

setting”

can

be

adjusted

with

remote

control.

2)

When

replacing

the

M

icom

(IC601)

and

NVRAM

(IC605

;

EEPROM

)

be

sure

to

adjust

the

“Head

switching

adjustment”

and

“NVRAM

option

setting”.

3)

When

replacing

the

cylinder

ass’y,

be

sure

to

adjust

the

“X-Point”

and

“Head

switching

adjustment”.

4)

Among

Samsung

VCR

remote

control

used

for

adjustment

as

a

accessory,

only

the

remote

control

that

has

figures

buttons

(0

~9)

is

available

for

all

adjustment

regardless

of

chassis.

5)

How

to

adjustment.

-

Press

the

“SW718

(TEST)”

button

on

Main

PCB

to

set

the

adjustment

mode.

-

If

the

corresponding

adjustment

button

is

pressed,

the

adjustment

is

performed

automatically.

-

If

the

adjustment

is

completed,

be

sure

to

turn

the

power

off.

2-1-1

Location

of

adjustment

button

of

remote

control

EJECT

1®

@SHUTTLE@

X-Point

(Tracking

Center)

Adjustment

("5"

Button)

9

G

U

D0

NVRAM

Option

Setting

("M

ENU"

Button)

Head

Switching

Adjustment

("SPEED"

Button)

STANDBY/ON

DISPLAY

CNT.RESET

SPEED

<This

type

of

remote

control

can

adjust.>

<This

type

of

remote

control

can

not

adjust.>

Remote

Control

for

adjustment

is

not

supplied

as a

Service

J

ig.

Fig.

2-1

Samsung

Electronics

2-1

Alignment

and

Adjustment

2-1-2

SW718

(TEST)

location

for

adjustment

mode

setting

Eas

heey

at

I.

i

‘DD

heat

Desc

‘Das

one

=

«

4,

rama

:

*°

bib

)

aS

O16:

|

oe

»Oin

Wir

(4:))

SS

ao

peas

HDD

3

baec

st

A

2-2

Fig.

2-2

M

ain

PCB

(Top

View)

Samsung

Electronics

2-2

Mechanical

Adjustment

Alignment

and

Adjustment

Note

:

Refer

to

the

Mechanical

Manual

“DX-9R

(AC68-00001A)”

for

the

adjustment

and

confirmation

of

ass’y

full

deck.

2-2-1

The

number

and

position

of

test

point

Test

point:

TP601

(Control

Pulse)

TP602

(H’D

S/W

-Trigger)

TP301

(Envelope)

TP302

(Audio

output)

TP303

(Video

output)

L

AUDIO

OUTPUT

o

TP602

HO

SW

=a

1P302

A-OUT

|

TP301

aw

ENVELOPE

a

—

[|

HEAD

SWITCHING

Fig.

2-3

Location

of

Test

point

(M

ain

PCB-Top

View)

2-2-2

ACE

Head

Position

(X-Point)

Adjustment

(See

the

2-2-1(d)

ACE

Head

Position

(X-Point)

Adjustment

on

page

2-2

of

the

Mechanical

Manual)

1)

Playback

the

alignment

tape

(Color

bar).

2)

Press

the

“SW718

(TEST)”

button

on

Main

PCB

to

set

the

adjustment

mode.

(See

Fig.

2-2)

3)

Press

the

“5”

button

of

remote

control

then

adjustment

is

operated

automatically.

(See

Fig.

2-1)

Samsung

Electronics

4)

Connect

the

CH-1

probe

to

TP301

(Envelope)

the

CH-2

probe

to

TP602

(H’D

switching

pulse)

and

then

trigger

to

CH-1.

5)

Insert

the

(-)

driver

into

the

X-Point

adjustment

hole

and

adjust

it

so

that

envelope

waveform

is

maximum.

6)

Turn

the

Power

off.

2-3

Alignment

and

Adjustment

2-3

Head

Switching

Point

Adjustment

1)

Playback

the

alignment

tape.

2)

Press

the

“SW718

(TEST)”

button

on

Main

PCB

to

set

the

adjustment

mode.

(See

Fig.

2-2)

3)

Press

the

“SPEED”

button

of

remote

control

then

adjustment

is

operated

automatically.

(See

Fig.

2-1)

4)

Turn

the

Power

off.

2-4

NVRAM

Option

Setting

1)

NVRAM

Option

is

adjusted

at

production

line

basically.

2)

In

case

Micom

(IC601)

and

NVRAM

(IC605

;

EEPROM)

is

replaced,

be

sure

to

set

the

corresponding

option

number

of

the

repaired

model.

(If

the

option

is

not

set,

the

unit

is

not

operated.)

1)

Press

the

“SW718

(TEST)”

button

on

Main

PCB

to

set

the

adjustment

mode.

(See

Fig.

2-2)

2)

Press

the

“MENU”

button

on

the

remote

control

about

5

seconds

then

option

setting

display

is

appeared.

(See

Fig.

2-4

and

2-5)

3)

Select

the

option

number

(See

Table

2-1

;

Page

2-5)

of

corresponding

model

with

“FF”

and

“REW”

button

on

the

remote

control.

4)

If

selecting

the

option

number

is

completed,

press

the

“PLAY”

button

of

remote

control.

(If

“PLAY”

button

is

pressed,

the

selected

number

is

changes

reversed

color.

;

See

Fig.

2-4

and

2-5)

5)

Press

the

“OK

(VCR)”,

“MENU

(VCP)”

button

of

remote

control

again

to

store

the

option

number.

(“PLEASE

WAIT”

is

displayed

for

a

second

as

shown

Fig.

2-6,

2-7

and

this

setting

is

completed.)

6)

Turn

the

Power

off.

[>

OPTION

DIODE

x

x

*

OPTION

DIODEX*

_

|

>01

WA 03

04

[06

07 08

01

[A

03

04

GB

06

07 08

09

10

11 12

13

14

15

16

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10

11 12

13

14

15

16

yee

1G)

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pe

a

2

17

18 19

20

21

22

23

24

25

26

27

28 29

30 31

32

25

26

27

28 29

30 31

32

33 34

35

36

37 38 39

40

33

34

35

36 37 38

39 40

41

42

43

44

45

46

47

48

41

42

43

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47

48

49

50

51 52

53

54

55

56

49

50

51 52

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56

|

<>¥

CNG:

a

SAVE:

OK

|

4b

¥

CNG:

4

SAVE:

CEM,

Fig.

2-4

(VCR)

Fig.

2-5

(VCP)

|

[xk

OPTION

DIODE

x

x

i

XX

OPTION

DIODEKk

|

|

01>

03

04

[A

06

07 08

01>

03

04

[I

06

07 08

09

10

11 12

13

14

15

16

09

10

11 12

13

14

15

16

eer

Ge

ly

Mle

17

18 19

20

21

22

23

24

25

26

27

28 29

30

31

32

25

26

27

28 29

30

31

32

33

34

35

36

37 38 39

40

33

34

35

36

37 38 39

40

1

2

43

44

45

46

47

M8

41

42

43

44

45

46

47

48

49

50

51

54

55

49

50.5

54

55

56

<—

PLEASE

WAIT

>

PLEASE

WAIT

>

|

<>

CNG:

SAVE:

|

(<<

CNG:

a

SAVE:

[EM

Fig.

2-6

(VCR)

Fig.

2-7

(VCP)

2-4

Samsung

Electronics

Alignment

and

Adjustment

<Table

2-1>

COUNTRY

M

ODELS

OPTION

NUMBER

RUSSIA

SVR-433

6, 8,

11,

12,

17,

18,

22,

25,

30,

31,

32, 35,

41,

42,

45,

50,

54

SVR-233

6, 8,

11,

17,

18,

22,

25,

30, 31,

32,

34,

41,

42,

45,

50,

54

SVR-230B

8,11,

17,

18,

22, 25, 30,

31, 32,

34, 37,

38,

41,

42,

50,

54

SVR-230W

8,11,

17,

18,

22, 25, 30,

31, 32,

34,

37, 38,

41,

42,

50,

54

SVR-2301

8,

11,

17,

18,

22, 25, 30,

31, 32,

34,

37, 38,

42, 50,

54

SVR-131

8, 9,

10,

11, 17,

18,

22,

30, 31,

32,

34, 39,

42,

45

Samsung

Electronics

2-5

Alignment

and

Adjustment

MEMO

2-6

Samsung

Electronics