JVC 4VR-5436X Manuale utente

No,

2333

MODEL

4VR-5436X

FM/AM

4CHANNEL

STEREO

RECEIVER

WITH

CD-4

DEMODULATOR

DIMENSIONS:

H-—

6-3/8”

(16.4em)

MULTI

LTMMILLLRULLLUML

EEUU

LU

LIWILUI

UML

DL

AMPLIFIER

SECTION

RMS

Power

All

Channels

Driven,

20Hz~20kHz

Power

Bandwidth

RMS

Power

All

Channels

Driven,

at

1kHz

Total

Dynamic

Power

(IHF)

{HF

Power

Bandwidth

Total

Harmonic

Distortion

Intermodulation

Distortion

Load

Impedance

W—

20”

(50.8cm)

15W

per

channel

at

82

15W

per

channel

at

422

35W

per

channel

at

82

(BTL)

68W

(17W

x

4)

at

82

T2W

(18W

x

4)

at

42

TAW

(37W

x

2)

at

82

(BTL)

110W

(27.5W

x

4)

at

82

140W

(35W

x

4)

at

42

10Hz~

25kHz

0.8%

at

rated

output

0.2%

at

half

rated

output

1.0%

ar

rated

output

0.2%

at

half

rated

output

49

~162

(82~162;for

BTL)

D—15-3/8""

(39.1cm)

SPEC

ECA

T

IONS

SEA

Control

Range

(Front)

Bass

Control

(Rear)

Treble

Control!

(Rear)

Loudness

Control!

Low

Cut

Filter

High

Cut

Filter

Crosstalk

FM

TUNER

SECTION

Tuning

Range

Usable

Sensitivity

Total

Harmonic

Distortion

(at

400Hz,

100%

Mod)

Weight:

31.5

lbs

(14.3

kg)

ST

UTTAULT

LLM

LLL

LEGIT.

LUM

LUMGLY

GRILL

+12dB

+10dB

at

100Hz

+10dB

at

10kHz

+12dB

at

50Hz

+6dB

at

10kHz

-10dB

at

50Hz

-10dB

at

10kHz

50dB

at

1kHz

:

88MHz~

108MHz

:

2.0uV

(IHF)

MONO

0.5%

STEREO

0.8%

|

ignal

t

i i

:

Damping

Factor

30

at

82

ue

bil

:

ses

Input

Sensitivity,

Phono

1.5mV/100k2,

65dB

Capture

Ratio

:

2.0dB

Impedance

and

S/N

Ratio

Aux-1,-2

200mV/50k2,,

75dB

Muting

Level

-10uV

Tape

Mon.

200mV/50k2,

75dB

200mV

20Hz~

30kHz,

+1dB

40,

250,

1k,

5k,

15kHz

MW

TUNER

SECTION

Tuning

Range

Usable

Sensitivity

Selectivity

Recording

Output

Level

Frequency

Response

SEA

Center

Frequency

(Front)

:°520KHz~

1605KHz

:

380uV,

200uV/m

:

30dB

IMRAN

A!

VICTOR

COMPANY

OF

JAPAN,

CEMET

ED.

TAMERUIUUNERIE

MONI

IERERDNIARRIGAIORDII

NE

REMOVAL

OF

THE

TOP

COVER

AND

BOTTOM

PLATE

1.

Remove

4

screws

through

the

both

sides

of

the

top

cover.

2.

Remove

the

top

cover

3.

Remove

screws

from

bottom

plate

and

remove

the

bottom

plate

from

the

chassis.

DL-ED92382

E48193-002

SDSP4012MS

E48599-001

SDSB3012N

E1756-001

SDSB4008N

SDSB3008N

G2@O@Q

©©L00

Fig.

1

FINAL

PACKING

ASS’Y

PARTS

NAME

PARTS

NO.

Envelope

Carton

Case

Packing

Materials

4VR-5436X

E32332-017

4VR-5436X-PK

4VR-5436X-NZ

Wooden

Case

Washer

Screw

Foot

Tapping

Screw

Bottom

Plate

Tapping

Screw

xX

2

Tapping

Screw

x

9

|

MAIN

PARTS

ARRANGEMENT

|

TOP

VIEW

S.E.A.

Coil

C.B.

ASS'Y

(TAC-303)

TUNER

C.B.

ASS’Y

(TFM-207GUA3

OR

TFM-207GUA6)

BOTTOM

VIEW

POWER

SWITCH

SELECT

SWITCH

C.B.

ASS’Y

(TAC-305B)

PROTECTOR

C.B.

ASS'Y

(TAP-238)

Py

i

||

Fig.

2

Fig.

3

AP

TT

1

——_@@@

GD

@

©

6

GB

© ©

@

GB

i)

a

we

ELECTROLYTIC

CAPACITOR

(QEY3513-121}

POWER

TRANS

(E03077-14

OR

E03077-14C)

POWER

SUPPLY

C.B.

ASS'Y

(TAP-212)

TONE

CONTROL

AMP.

C.B.

ASS'Y

(TAC-360)

CD-4

C.B.

ASS'Y

(TDM-22B)

POWER

AMP.C.B.

ASS'Y

(TAD-151)

4VR-5436X%

&

|

HOW

TO

FIT

THE

DIAL

CORD

|

.

Set

the

variable

capacitor

on

maximum

capacity.

.

Be

sure

dial

drum

is

firmly

fixed

to

the

shaft.

.

Fit

the

dial

cord

in

accordance

with

arrow

marks.

.

Wind

the

cord

around

the

tuning

shaft

3

turns

and

dial

drum

3

turns.

.

Place

the

pointer

on

the

rail

and

fix

to

the

dial

cord.

ao

fF

ON

GQ)

‘Dial

drum

QZD1205-002

@)

—

Spring

E45679-001

(3)

Tension

control

E46061-0018S

(4)

Needle

pointer

E33502-001

Fig.

4

POWER

TRANSFORMER

VOLTAGE

&

WIRE

COLOR

POWER

TRANS

VOLTAGE

POWER

TRANS

VOLTAGE

E03077—14C

E03077-14

PRIMARY

SECONDARY

PRIMARY

SECONDARY

iso

eo

BED

+8V(2.5A)

120V

o-

BLUE

RED

19V

(2.5A)

BLACK

OV

100V

GREEN

BLACK

OV

100v

o

RED

18V

RED

18V

YELLOWS

17.5

(0.2A)

ay

o

NELLOW YELLOW

4

1

7.5V(0.2A)

WHITE

OV

120V

ORANGE

WHITE

OV

YELLOW

pepey

‘onan

Qoen

YELLOW

,

44

cy

.

F

10.8V

(2.

caus

2

oe

Bau

0.8V(2.3A)

2

R

oy

oSROWN

=e

5.

09

Ov

o

BROWN

BLUE

OV

(FOR

AMERICA

AND

CANADA)

Big.

5

AVR-5436X

on

ee

REMOVAL

OF

THE

POWER

AMPLIFIER

CIRCUIT

BOARD

ASS‘'Y

1.

Pull

out

the

wire

connector

ass’y

(Fig.

@,

Q,

@),

@)

from

power

amplifier

circuit

board.

2.

Remove

the

3

screws

(Fig.

©,

@)

fixing

the

sub

heat

sink

to

the

rear

panel.

3.

Remove

the

4

screws

(Fig.

®,0),

i)

:

@).

@,.@

Socket

E03565-5B

@,®

"

E03565-7B

®,©.@

Tapping

Screw

SDSB3008M

®.9O,0,0

"

SDSB3008N

Q

Sub

Heat

Sink

=

E33513-001

HOW

TO

REPAIR

&

CHECK

THE

TUNER

CIRCUIT

BOARD

ASS’‘Y

&

CD4

DEMODULATOR

CIRCUIT

BOARD

ASS'Y

1.

Remove

the

2

screws

(Fig.@,

@).

2.

Turn

up

the

circuit

board

bracket

with

CD-4

demodulator

circuit

board

ass’y.

(Fig.(3))

@

‘Tapping

Screw

SDSB3008N

@

"

SDSB3008N

@)

CD-4

Unit

Ass’y

CD4U-17

Fig.

7

CD-4

C.

B

Ass’y

TDM-22B

C.

B

Bracket

E33449-001

ay

ee

AVR-5436X

|

REPLACEMENT

OF

POWER

TRANSISTOR

|

Fig.

8

TRANSISTOR

LEADS

2SA489Y

2SC789Y

2SD325C

or

Dore

:

SS:

B

TA7061AP

4VR-5436X

2SC710B

or

CorD

28C711E

or

F

2SC711AE

or

AF

2SA726F

2SA628E

2SA628AE

2SC871E

or

F

2SC1312F

or

G

ae

Ass’y

Screw

(2SC789Y

or

2SA489Y)

@

_LPSP3016NS

(2)

Transistor

(3)

Mica

Film

2SA673ACS

28C1213ACS

2SC458LGC

2SC458ALGC

2SC458LD

28C1213AC

2SC1166Y

2SC829B

SS

———

B

Pit

3

E

LA3301

gee4

E03450-005

1413

121110

9

8

P2345

6-9

TTT

TOP

VIEW

V4.

BES

ELS

Fig.

9

—

6

TUNER

ALIGNMENT

TUNER

C.B.

ASS’Y

IS

DISTINGUISHED

TWO

TYPES

AS

FOLLOWS

;

FM

DE-EMPHASIS

|

TUNER

C.B.

ASS’Y

DESCRIPTION

50uSec

TFM-207GUA6

FOR

EUROPE,

AUSTRALIA

75uSec

TFM-207GUA3

FOR

AMERICA,

CANADA,

OTHERS

BEFORE

ALIGNMENT

1.

Tuning

dial

is

set

to

the

proper

point

corresponding

to

no

radio

stations.

2.

Connecting

the

RF

generator

to

antenna

terminal

use

the

dummy

antenna,

refer

to

figure.

3.

Use

the

insulated

screw-driver

adjusting

the

IFT.

STANDARD

DUMMY

ANTENNA

aso

ee

1

|

204H

|

[ory

Sta

a

es

>

9

30.

125PF

4

ee

5a

ah

cues

4

cia

|

Ti

|

320

400PF

ssc

|

ANTENNA

299

|

ANTENNA

750

|

ce

|

3000

son

|

1500

|

enn

p+

7

;

—_

ie

ieee

eee

|

Base

Sates

a

Sa

4

FM

AM

Fig.

10

Fig.

11

AM

ALIGNMENT

|

S

=

R312

‘eee

JO

"ose

Cz

@

—

TP5

1200-f@

[OHS

AM

i

M

TCA

o

TP4

(AM

IN)-+-o2

=

Fig.

12

ADJUSTING

IF

STAGE

1.

Connect

the

output

of

sweep

generator

set

to

455kHz

to

the

AM

INPUT

(TP4)

of

Tuner

Circuit

Board

Ass’y

(TFM-207).

2.

Connect

the

input

of

sweep

generator

to

the

(TP5).

8.

Adjust

the

core

of

I.F.T.

T301

so

that

output

is

at

max

and

symmetry

as

figure

of

right.

Fig.

13

a

oe

4VR-5436X

ADJUSTING

TRACKING

&

SENSITIVITY

LOW

FREQUENCY

1.

Connect

the

RF

generator

set

to

600kHz

modulation

of

30%

at

400Hz

to

the

antenna

terminal

of

the

rear

panel.

2.

Connect

VTVM

to

REC

jack

or

speaker

terminal.

3.

Set

dial

pointer

to

600kHz

on

the

dial

calibrations.

4.

Adjust

the

OSC-trans

T303

and

ferrite

bar

antenna

so

that

output

is

at

max.

HIGH

FREQUENCY

1.

Connect

RF

generator

set

to

1400kHz

modulation

of

30%

at

400Hz

to

antenna

terminal

of

the

rear

panel.

2.

Connect

VI'VM

to

REC

jack

or

speaker

terminal.

3.

Set

dial

pointer

to

1400kHz

on

dial

calibrations.

4.

Adjust

trimmer

Tco

AM

and

TcA

AM

of

FRONT

END

so

that

output

is

at

max.

FM

ALIGNMENT

TPi—-o

gg

6

y

FM

IFT

EM

LA

FM

Lo

@)

ADJUSTING

DISCRIMINATOR

1.

Connect

sweep

generator

set

to

10.7MHz

to

FM

test

point

(TP1)

through

resistor

33k.

2.

Connect

oscilloscope

to

the

FM

DET

OUT

(TP2).

3.

Adjust

the

primary

and

the

secondary

of

T101

so

that

wave

form

to

be

‘‘S”

curve

as

figure

of

right

and

to

be

maximum

gain.

ADJUSTING

CENTER

METER

&

DISTORTION

1.

Connect

RF

generator

the

modulation

of

400Hz,

the

deviation

of

75kHz

to

the

antenna

terminal

of

the

rear

panel]

through

the

dummy

antenna.

.

Connect

the

oscilloscope

and

distortion

meter

to

REC

jack

or

speaker

terminal.

.

Set

the

dial

pointer

to

the

proper

position

so

as

not

to

be

tuned.

.

Adjust

the

secondary

of

T101

so

that

the

center

meter

indicates

just

0.

.

Set

the

generator

to

98MHz

and

output

60dB.

.

Set the

dial

pointer

98MHz

just

tuned

.

Adjust

the

primary

core

of

T101

so

that

distortion

is

at

minimum,

less

than

0.5%.

A

Dorp

WO

WD

Caution

:

T101

Primary

Core

is

located

at

lower

portion.

Secondary

Core

is

located

at

upper

portion.

4VR-5436X

=

80>

ADJUST

TRACKING

AND

SENSITIVITY

LOW

FREQUENCY

.

Connect

RF

generator

to

the

antenna

terminal

of

the

rear

panel

through

dummy

antenna.

.

Connect

VTVM

and

oscilloscope

to

REC

jack

or

speaker

terminal.

.

Set

dial

pointer

to

88MHz

on

dial

calibrations.

ao

pep

WYN

.

Adjust

coil

Lo

and

La

of

front-end

so

that

output

is

at

max.

HIGH

FREQUENCY

.

Set

RF

generator

to

88MHz

the

modulation

of

400Hz,

the

deviation

of

75kHz

and

input

10zV.

1.

Set

RF

generator

to

108MHz,

the

modulation

of

400Hz,

the

deviation

of

75kHz

and

the

input

of

10uV.

2.

Set

dial

pointer

to

108MHz

on

dial

calibrations.

3.

Adjust

trimmer

FM

Tco

and

TCA

of

Front-end

so

that

output

is

at

max.

ADJUSTING

MUTING

LEVEL

.

Connect

VTVM

and

oscilloscope

to

REC

jack

or

speaker

terminal.

.

Switch

the

source

select

to

FM

MUTING.

.

Cut

out

R101

when

muting

is

operated

under

input

level

of

25dB.

Pp

WN

ADJUSTING

OF

MPX

TP3

(Pin

no

13)

©&

|~—1201

(Yellow)

OOF

OU)

L-out

R-out

Fig.

16

1.

Set

stereo

signal

modulator

to

the

following

Modulation

>

1000Hz

Deviation

Pilot

only

>

7.5kHz

MAIN

&

SUB

>

67.5kHz

Output

>

EXT

jack

of

RF

signal

generator

.

Connect

RF

generator

to

the

antenna

terminal

of

the

rear

panel

through

dummy

antenna.

.

Connect

VTVM,

Oscilloscope

and

distortion

meter

to

REC

jack

or

speaker

terminal.

.

Set

RF

generator

to

98MHz,

and

the

input

60dB

(1mV).

.

Set

dial

pointer

to

98MHz

on

dial

calibrations.

.

Connect

oscilloscope

to

TP3.

(terminal

of

IC201

No.

13)

.

Adjust

T201

black

core

so

that

19kHz

level

is

at

max.

.

Set

stereo

demodulator

sub

and

pilot.

oon

oaw#r

wow

ADJUSTING

SEPARATION

.

Set

RF

generator

to

98MHz

modulation

of

400Hz,

deviation

of

75kHz

and

input

of

24~34dB.

10.

11.

12.

13.

14.

Switch

selector

of

stereo

modulator

to

LEFT.

Adjust

VR201

so

that

RIGHT

channel

output

is

at

min.

Switch

selector

of

stereo

modulator

to

RIGHT.

Adjust

VR201

so

that

LEFT

channel

output

is

at

min.

In

case

of

difference

between

right

and

left,

set

VR201

to

average.

—

9

—

.

Adjust

T201

yellow

core

so

that

L-channel

or

R-channe}

output

is

at

maximum

gain

and

at

minimum

distortion.

4VR-5436X

AUDIO

ALIGNMENT

ADJUSTING

IDLING

CURRENT

ADJUSTING

WITH

AMMETER

1.

Connect

DC

ammeter

to

collector

of

power

transistor

X713

and

+B.

2.

Adjust

R745

semi

fixed

volume

so

that

ammeter

reading

is

20mA.

3.

Repeat

same

procedure

as

all

the

other

channels.

(08)+8

=

X704

X713

POWER

TRANSISTOR

LOAD

OPEN

DC

AM

METER

——

(709)

-B

Fig.

17

ADJUSTING

WITH

MILIVOLT

METER

1.

Connect

DC

milivoltmeter

to

both

end

of

emitter

resistor

R735,

that

is

to

connect

milivoltmeter

to

the

Test

point

of

TAD-151

and

speaker

terminal

correspponding

to

it.

2.

Adjust

R745

semi

fixed

volume

so

that

milivoltmeter

reading

is

10mV.

3.

Repeat

same

procedure

as

all

the

other

channels.

TAD-151

DCMILIVOLT

METER

FRONT

LEFT

REAR

LEFT

FRONT

RIGHT

//

REAR

RIGHT

Fig.

18

Note:

When

you

do

it,

set

volume

to

minimum

and

take

loads

away

from

speaker

terminal.

4VR-5436X

—

10

—

JVC 4VR-5436X Manuale utente

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