Sony SVBK-170P User manual

0)

yr

4

a

COMPONENT

OUTPUT

BOARD

SVBK-170P

SERVICE

MANUAL

1st

Edition

TABLE

OF

CONTENTS

SECTION

1

OPERATING

INSTRUCTION

SECTION

2

SERVICE

OVERVIEW

3-1.

NOTES

ON

SPARE

PARTS

Sed

eererreseecescsces

2-1

2-1-1.

Notes

on

Spare

Parts

Se

eeereecresccsecccccene

2-1

2-1-2.

Replacement

Procedure

for

Chip

Parts

*-*+*-

2-1

SECTION

3

ELECTRICAL

ALIGNMENT

3-1.

REFOSC

ADJUSTMENT

cetresssestsesttseresese

3-2

3-2.

HUE

ADJUSTMENT

crerrtsteesteressecseceeeeees

3-2

3-2-1.

B-Y

HUE

ADJUSTMENT

ccrreesseetreeeees

3-2

3.2-2.

R-Y

HUE

ADJUSTMENT

cvvvreesseeseeeees

3-3

3-3.

Y

OUTPUT

LEVEL

ADJUSTMENT

***°"*-*-

3-3

3-4.

R-Y

OUTPUT

LEVEL

ADJUSTMENT

°:**:--*-

3-4

3-5.

B-Y

OUTPUT

LEVEL

ADJUSTMENT

°::-:----

3-4

SECTION4

BLOCK

DIAGRAM

SECTIONS

SCHEMATIC

DIAGRAM

AND

BOARD

LAYOUT

DEC-75

Board

ctccececsresssessseseceeeeeseneeeseeeseeseees

SECTION

6

SEMICONDUCTOR

ASSIGNMENTS

SECTION7

SPARE

PARTS

7-1.

NOTES

ON

SPARE

PARTS

7-1-1.

Notes

on

Spare

Parts

cerreerceeccecerceeeeeerereres

9-2,

EXPLODED

VIEW

crereessssreeceeeceresraeeeeceeeenes

7-3,

ELECTRICAL

PARTS

LIST

srerssssrrscrsesseseseseees

SECTION

1

o.

6

§

GC

4

zo

oE

oc

‘ore

=

8a

n

Oo

QE

=

8

ri

suryo

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‘d-dA

10

:A-€

sumo

$1

‘d-dA

L0:A-U

aatyesau

ouds

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of

‘d-da

OF

SA

7A

(aa

LH

%

001

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NON

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%

OOF

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feusis

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ouds

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Feusis

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pue

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Joy

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(sayoul

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uone]e}Su]

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asojaq

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1-1

2-1.

SECTION

2

SERVICE

OVERVIEW

NOTES

ON

SPARE PARTS

2-1-1.

Notes

on

Spare

Parts

Standardization

of

Parts

Spare

parts

supplies

form

Sony

Parts

Center

may

not

be

always

identical

with

the

parts

which

actually

in

use

due

to

“accommodating

the

improved

parts

and/or

engineering

changes”

or

“standardization

of

genuine

parts”.

This

manual’s

exploded

views

and

electrical

spare

parts

list

are

indicating

the

part

numbers

of

“the

standardized

genuine

parts

at

present.”

Stock

of

Parts

marked

with

“o”

in

SP

(Supply

code)

column

of

the

spare

parts

list

are

not

normally

required

for

routine

service

work.

Orders

for

parts

marked

with

“o”

will

be

processed,

but

allow

for

additional

delivery

time.

Units

for

Capacitors,

Inductors

and

Resistors

The

following

units

are

assumed

in

schematic

diagrams,

electrical

parts

list

and

exploded

views

unless

otherwise

specified:

Capacitors

:

uF

in

schematic

diagram

:

F

of

pF

in

schematic

diagram

Resistors

:

Q

2-1-2.

Replacement

Procedure

for

Chip

Parts

Required

Tools

Soldering

iron

:

20

W

If

possible,

use

a

soldering

iron

tip

heat-

controller

at

270

+

10°C.

Braided

wire

:

SOLDER

TAUL

or

equivalent

Sony

part

No.

7-641-300-81

Solder

:

0.6

mm

dia.

is

recommended.

Tweezers

Soldering

Conditions

Soldering

iron

temperature

:

270

+

10°C.

Soldering

time:

less

than

two

seconds

per

a

pin.

CAPACITOR

RESISTOR

TRANSISTOR

DIODE

<S"

Terminal

e

Resistor

and

Capacitor

Replacement

1.

Place

the

soldering

iron

tip

onto

the

chin

part

and

heat

it

up

until

the

solder

is

melted.

When

the

solder

is

melted,

slide

the

chip

part

aside.

2.

Make

sure

that

there

is

no

pattern

peeling,

damage

and

/

or

bridges

around

the

desoldering

positions.

3.

After

removing

the

chip

part,

presolder

the

area,

in

which

the

new

chip

part

is

to

be

placed,

with

a

thin

layer

of

solder.

4.

Place

new

chip

part

in

the

desired

position

and

solder

both

ends.

Once

a

chip

part

has

been

removed

never

use

it

again.

2-1

IIHT

e

Transistor

and

Diode

Replacement

1.

2.

3.

Cut

the

terminals

of

the

chip

part

with

a

nipper.

Remove

the

cut

leads.

Make

sure

that

there

is

no

pattern

peeling,

damage

and/

or

bridges

around

the

desoldering

positions.

After

removing

the

chip

part,

presolder

the

area,

in

which

the

new

chip

part

is

to

be

placed,

with

a

thin

layer

of

solder.

Place

new

chip

part

in

the

desired

position

and

solder

the

terminals.

Once

a

chip

part

has

been

removed

never

use

it

again.

e

IC

Replacement

1.

Using

the

desoldering

wire,

“SOLDER

TAUL”

Sony

Part

No.

7-641-300-81,

remove

the

solder

around

the

pins

of

the

IC-chip

to

be

removed.

While

heating

up

the

pins,

remove

the

pins

one

by

one

using

sharp-pointed

tweezers.

Make

sure

that

there

is

no

pattern

peeling,

damage

and/

or

bridges

around

the

desoldering

positions.

After

removing

the

chip

part,

presolder

the

area,

in

which

the

new

chip

part

is

to

be

placed,

with

a

thin

layer

of

solder.

Place

new

chip

part

in

the

desired

position

and

solder

the

pins.

Once

a

chip

part

has

been

removed

never

use

it

again.

2-2

SECTION

3

ELECTRICAL

ALIGNMENT

{Equipment

Required]

e

Videocassette

Recorder/Videocassette

Player(SVO-5800P/SVP-5600P)

*

Oscilloscope(TEKTRONIX

2445B/150

MHz

or

more)

«

Frequency

Counter(ADVANTEST

TR5821AK)

«

Composite

Signal

Generator(TSG-131)

¢

VH-247

Extension

Board(SONY

Parts

No.

J-6382-470-A)

[Note]

|

When

perform

electrical

alignment,

need

the

extension

board.

(Connect

the

extension

board

after

turn

the

power

off.)

[Connecton]

RV201

RV403

1

4

£401

g

ote201

9

O°Vv40!

TPIOL

@tp3q1

TP40!

THROUGH

OFF

oy

EXT

IN

hy

e

THROUGH

e

S

VIDEO

INPUT

CONNECTOR

‘s

ADJ

DEC-75

foe

|

OQ

TSG-131

VIDEOCASSETTE

RECORDER

COMPOSITE

SIGNAL

GENERATOR

VIOEOCASSETTE

PLAYER

SVO-5800P/SVP-5600P

TTS

ETHEL

3-1.

REF

OSC

ADJUSTMENT

Machine

condition

for

adjustment

Specifications

|

Adjustments

e

VIDEO

IN

:

no

signa!

TP401/DEC-75(D-2)

@

CV401/DEC-75(D-1)

¢

STOP(E-E)

mode

«

Connect

the

frequency

counter

to

4433619

+

5

Hz

TP401(D-2)

through

an

oscilloscope.

©

S1/VH-247

:

OFF

3-2.

HUE

ADJUSTMENT

3-2-1.

B-Y

HUE

ADJUSTMENT

Machine

condition

for

adjustment

Specifications

|

Adjustments

|

¢

S

Video

Input

Connector/VH-247

TP301(B-2)

@

RV403/DEC-75(C-1)

:

75%

COLOR

BARS

t

¢

S1/VH-247

:

EXT

IN

S2/VH-247

:

ADJ

S3/VH-247

:

ADJ

S4/VH-247

:

ADJ

No

level

difference

(each

1H

signals)

(AS10mvV)

3-2

3-2-2.

R-Y

HUE

ADJUSTMENT

Machine

condition

for

adjustment

Specifications

|

Adjustments

|

e

S

Video

Input

Connector/VH-247

TP201(B-2)

@

CV402/DEC-75(D-3)

:

75%

COLOR

BARS

¢

S1/VH-247

:

EXT

IN

S2/VH-247

:

ADJ

S3/VH-247

:

ADJ

S4/VH-247

:

ADJ

No

level

difference

(each

1H

signals)

(AS10mV)

3-3.

Y

OUTPUT

LEVEL

ADJUSTMENT

e

S

Video

Input

Connector/VH-247

:

100%

COLOR

BARS

©

SIVH-247

:

EXT

IN

S2/VH-247

:

ADJ

S3/VH-247

:

ADJ

S4/VH-247

:

ADJ

A=

1.025+

0.02

Vp-p

TTT

3-4.

R-Y

OUTPUT

LEVEL

ADJUSTMENT

Machine

condition

for

adjustment

Specifications

Adjustments

e

S$

Video

Input

Connector/VH-247

TP201(B-1)

@

RV201/DEC-75(B-1)

:

100%

COLOR

BARS

¢

S1MVH-247

:

EXT

IN

S2VH-247

:

ADJ

S3/VH-247

:

ADJ

S4NH-247

:

ADJ

A=0.715

+

0.014

Vp-p

3-5.

B-Y

OUTPUT

LEVEL

ADJUSTMENT

Machine

condition

for

adjustment

Specifications

.

Adjustments

¢

S

Video

Input

Connector/VH-247

TP301(B-2)

@

RV301/DEC-75(C-1)

:

100%

COLOR

BARS

©

S1/VH-247

:

EXT

IN

S2/VH-247

:

ADJ

$3/VH-247

:

ADJ

S4/VH-247

:

ADJ

A=0.715

+

0.014

Vp-p

CHROMA

DECODER

CHROMA

DECODER

SECTION

4

BLOCK

DIAGRAM

DEC-75;

CHROMA

DECODER

NTSC:

BUFFER

PAL

:PHASE

SHIFT

10401

-

PAL

ONLY

M51271FP

TP401

FSC)

14

! I

\

2

2403

|

| 1

TP301

@-Y

OUD

aso1

0301,

302

a303

1c201

@/2),

202

@/2)

O

Pal

COMPONENT

CHROMA

00

IN|

CHROMA

B-Y

19

LPF,

TRAP

DELAY

B-Y

Bey

out

CP246

603-2

VA148,

502-28

BUFFER

“

BECODE

‘

AMP

RV301

B-Y

OUTPUT

LEVEL

|

1P201

:

R-Y

oun

0201,

202

0203

10201

172),

202

072

O

-

y

cNSO1

7

LPF,

TRAP

DELAY

nee

Ary OUT

5B

|

cp24e,

603-4

!

{

RV201

BURST

R-Y

OUTPUT

LEVEL

MUTE

PULSE

GEN

10410

!

aio!

|

cNg01

REG

+5.9V

COMPONENT

Y

00_

IN

Y

val4e8,

502-18

|

1B

|

BUFFER

10411

1

SW

REG

1005-4

SW

REG

1005-4

SW

REG

1005-4

[1

SB]

SW

REG

1005-4

-——fi4a

Peal

pmo

ES]

1c403

BURST

MUTE

-5V

PULSE

GEN

HALF

H

KILLER

TP403

{BURST

MUTE

PULSE)

TPIO1

YY

oun

FLIO1

Q103,

104,

105

1C101

O

CNSO1

3

7

Y

OUT

LPF

BELAY

he

CP2ke

O36

1

RV1O1

Y

OUTPUT

LEVEL

1

DEC-75

SVBK-170/170P

(1)

Sony SVBK-170P User manual

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