Onkyo Tx-7430 User manual

TX·7430

SER

IAL

NO. 3258

ONKYO

,

~

,

SERVICE MANUAL

aUARTZ

SYNTHESIZED

TUNER AMPLIFIER

MODEL TX-7430

-

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFI ED BY MARK

L.

ON THE

SCHEMATIC DIAGR

AM

AND IN THE PARTS LIST ARE

CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.

REPLACE THESE COMPONENTS WITH ONKYO PARTS

WHOSE PARTS NUMBERS APPEAR AS SHOWN IN THIS

MANUAL.

MAKE LEAKAGE-CURR ENT OR RESISTANCE MEA-

SUREMENTS TO DETERMINE THAT EXPOSED PARTS

ARE ACCEPTABLY INSULATED FROM THE SUPPLY

CIRCUIT BEFORE RETURNING THE APPLIANCE TO

THE CUSTOMER.

TABLE OF CONTENTS

Specifications 2

Service procedures 3

Exploded view _. . . . . . . . . . . . . . 4

Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Circuit description s 6

Block diagram - Amp. section - . . . . . . . . . . . . . . . 12

-Tuner section -

.,

. . . . . . . . . .

..

13

Block diagram

of

IC 14

Packing view

..

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

..

17

Adjustment procedures __.

..

18

Pc bcard view/parts list

Power amp . . . . . . . . . . . . . . . . . . . . . . . . . .

..

21

FM

/AM tuner 25

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Preamp. . _. . . . . . . . . 30

Remot e cuntrol . . . . . . . . . . . . . . . . . . . . . . . . 31

Switch

31

Spea ke r 32

Volume 32

Schematic diagram

Amp. section " 23

Tuner section 27

Disassembling prccedu res 33

ON

KYO

®

AUDIO

COMPONfNTS

- 1-

SPECIFICATIONS

AMPLlr-IER

SECTION

Power

Output

:

Musi

c

~1

Power

Output

:

Continuous

Power

Outp

ut:

Total

l larmo nic Dis tor tio n:

IM

Distort

ioll

:

D~rllping

Factor:

FroClu8

11

CY

Responso:

RIAA

Ouvia tio n:

Se

ns iti vit v

aud

lmp

cda nco :

Pho

no

Ovet lo ad:

Signal-lo-Noisu

Ratio:

Tone

COIlIIOls:

MUl

ing:

TUNER

SECTION

FM

:

Tuning

Rango :

Usabio

Sunsiti

vitv:

50cJO

Ouio rinp

Snnsitivitv

:

Captute Ralio:

Imago Hei

ectiou

Ratio:

Ir: Rojocli

oll

R~lio:

Signal

-lo

-Noiso Ratio:

Selecti vity

AM

Suppression

Ratio:

ll arruo

nic

DIslortion

:

Fro

quuncv

Rosp

onso

:

Storeo Separ ari on:

AM:

Tuning

Rango:

Usable

Sensitivitv:

Image Rejo

clion

Hario:

IF Rejeclion

Ralio

:

Signal

-Io-Noise

Ratio :

Harmonie

Otstoulou:

GENERAL

Dimensions

(W

x H x

D):

Weight:

45

watts

per

channel,

min.

RMS.

at 8 ohrns,

both

channels

driven

. from

20Hz

to

20kHz.

w ith no

more

than

0.08% TH D.

2 x

126

watts

at 4

ohrns.

1kHz

(DIN)

2 x 78

watts

at 8 ohms,

1kHz

(DIN)

2 x 70

watts

at 4

ohms,

1kHz

(DIN)

2 x 55

watts

at 8

ohrns,

1kHz

(DIN)

0.08% at rated

power

0.08% at 1

watt

outpur

0

.08

% at

rate

d

power

0.08% at 1

watt

ouput

35 at 8

ohms

20 - 30

.000

Hz ± 1

dB

20 -

20.000

Hz ± 0

.8dB

Phono

:

2.5mV/50

kohms

CD/Tape

Play:

150mV/50

kohms

Tape Rec:

150mV/3

.5

kohms

(phono)

120mV

RMS

at 'lkHz,

0.08%

THD

Phono

:

85dB

(at

10rnV

input

, A

weighted)

75dB

(IHF

A-202)

CD/Tape:

95dB

(A

weighted)

80dB

(IHF

A-202)

Bass: ±

10dB

at

100Hz

Treble:

±10dBatl0kHz

-20dB

87.5 - 108

.0MHz

(50kHz

steps)

Mono

:

12.8dBf.

1.2~V.

75

ohms

1

.0\lV

(S/N

26d

B.

40kH

z

Devi

.)

75

ohms

DIN

Stereo: 18

.0dBf.

2

.2~V.

75

ohms

23~V(S/N

46dB.

40kHz

Devi.)

75

ohms

DIN

Mono:

18

.0dBt.

2.2~V.

75

ohms

Stereo:

37.2dBf

.

20~V.

75

ohms

1

.5dB

85dB

90dB

Mono

:

72dB

Stereo:

66dB

50dB

DIN

(±300kHz

.

40kHz

dev.)

50dB

Mono

:

0.15

%

Stereo: 0.30%

30 -

15.000Hz

±

1.5dB

45dB

at 1kHz

30dB

at

100

- 10

.000Hz

522

- 1611 kHz

(9kHz

steps)

30~V

<lOdB

40dB

0.7%

435

x 110 x

3<15

m[n

17

-1/S"

x

<1

-3/S

"x

13-1/r

7.5 kg.. 16.5 Ibs.

Spec

llicatiorts arid Ieatures are

subject

to

chanqe

without

notice.

-2-

TX·7430

Remote

Control

transmitter

RC

-82S

Tr

ansmiu

er:

Inlrar

ed

S

ign

nl range:

Appr

ox. 5

meters

(1

6ft.

4")

Power

supply:

Two

"AA"

baueries

(l

.5V x 2 )

Dim ensrions (W x H x

0)

: 64 x 18 x

149

mm

2-1/2"

x

11/16"

x

5-7/8

"

Weight

:

110

grams 3.9 oz.

(in

clutl

ing

uaueri

es)

SERVICE PROCEDURES

1. R

eplacing

the

fuses

f or co nt

inucd

prrn

cc tion ;);:;Ullst lir c ha za rd.replnc e

0111\' w ith saure tvpe

and

s.uuc

rat

ing (use.

Circu it no.

Part

no. Des

cripti

on

f9

02

25207

5

2.5A-SE

-EAK, Pri

mary

f903

, P9 04

252078

5A-SE-EAK,

Sec

ondary

P905

252070

lA-SE-EAK

, Scc

ondary

2.

Change

of

FM/AM

band

step.

This mo de l is not loca red Ihe band sclcc to r swilch.

If th e PM b

and

step is eha nged from

50k

Hz 10 200k Hz , rcm ovc rwo

died es

(lSS133)

to

07

09 and

0710

on th e display PC boar d.

If th e AM

band

stcp is chungcd from

9kH

z to 1

0kHz,

rernov

e

01

diodc

(lS

S133)

10

0711

on

the displuy PC board.

3.

Memory

preservati

on

Th

is un it

does

1I

0t req uire m

emor

y pr

eserva

tion b

au

cries .

A hu il

t-

in me

mory

p

ower

bac

k - up sy stem prese

rves

co nten ts

01 th e m

emory

durin

g p

owe

r

lailur

es

and

eve

n when t he

Pli

.

unit

is unplugged .

Th

e unit

rnust

he pl

ugge

d in

and

the

power sw itch t

urn

ed Oll and

oll

on ce in order to

char

ge the

ba ck

-up

system. No te rhnt since this is not a

perma

nent

mem ory ,the pow

er

switch rnust be

turn

ed

00

and off a few

times

eac

h

mont

h 10

keep

the back

-u

p sy stern ope ra

tive

.

Th

e

per

iod of time

dur

ing

whic

h mem ory co

nte

nts ar e

preserved

after

pow

er

has

last

been

turned off va ries

d

cpen

din g on

climat

e

and

placement

of th e

unit.

On the

ave

r

age,

mem ory contents

ar

e pro tec ted

over

a

peri od of 3 10 4

wee

ks (a mi

nimu

m of 2

wee

ks) af ter

the last time pow

er

has been

turncd

off. T his pe

riod

is

shor l

er

when

the

un it is ex

pos

cd to very high

hum

idit y or

used

in an arc a

with

an ex tremel y

humid

clima te.

o I I 0

o ,

o

0 110

0'

o vc r

TX·1430

o

0 '

Q

-

>

C

;:

W

C

o

--I

a.

><

w

-4-

PARTS LIST

REF.NO

. PART NO.

DESCRIPTION

Al

27100

121 A Chassis

A2 27

1209

43 A Back panel

A3 27 13 0470 Bracket , shie lded

A4 27 130 46 8A Bracket, rad iat or

A5 27

16020

1

A6

27130

469

A

A8 27

190

359

A

A9

272

73

030C

A

I0

28 133

176A

A l l 2

8130242A

A12 27

300750

A13

27141122

AI4 27 14 1123 A

A15

272702

16

A2 1 27

110338

8

27110339

8

A22 27

190525

27

190526

A23 27

190

105

A3 1 28 18

4356A

28

184357A

A51 l AOO1121

lA

OI0 12 1

A52

28140

220

A61 27 175 13 0

A71 2832

2796

283 22795A

A72 28

322469

28322304 -1

A73

28322

470

2832230

5-1

A74 28

322

92 2B

283

22923B

A75

28322928

28322929

A76

2832292

4

28322925

A77

28322926A

28322927

A

BI 834

430068

B2 83 1

1300

88

B3 838 4

4008

9

B4 834

4301

08

B5 82 1

4300

6

B6 8304

40089

B7 82 1

4200

4

833430080

B9

8800

11

BIO

830

440109

Radiator

Bracke

t, po wer transforrner

Holder, dial plat e

Join t L

Back

platc

Dial plate

~

Strainrclicf

Bracket

F

Brack et R

Spacer

Fro nt bracket ass 'y < S>

Front br acket ass'y

H

older,

slide r < S>

Hold er, slider

H

old

er, ante nna

Top cover <

S>

Top cove r

Fr

ont

pane

l ass'y <

S>

Fro nt pa nel ass'y

Cushion

Leg

Knob,

Power < S>

Kno b, Power

Knob,

Speak er A <

5>

Knob

, Speakcr A

<8

'>

Kriob , Spcaker B

<5

>

Knoh, Speaker II

Knob, Volun••

$'

Kno b. Volume

Kn ob, Ton e < S>

Kno b, T on e

Knob, Slide <5>

Knob, Slide

Knob , Push <S>

Knob , Push

3T r S+6B(BC),

Tappi

ng scrcw

3Tn \'+8f\, Tapping scrcw

4TTB"'SC( BC), Tap ping screw

31TS+I0B

(B(' ), Tapplug screw

3P+6 FN(BC), Pan hcad screw

4TTC+8C(BC),

Tapp

ing screw

2P+4F(BC), Pan

hcad

screw

3TTP+

8P(BC),

Tapping

screw

Rivet

4TT

C+I 0C(BC),

Tapping

s

crew

REF .NO.

Bll

F902

F90 3,

1"

904

1"

905,

F906

P304

P901

Q508

, Q608

Q509,

Q609

Q902

,

Q905

T901

UI

PART

NO.

870060

252074

252078

252070

250600

44

253 128B or

2531

30A

220 178 3,

2201 784 or

2

201786

220

1773,

220

1774 or

220

1776

2201 754 ,

220

1755

,

22014040

r

220

1405

2300

199

I A008569 ·2A

U2 I A008570·2A

U3

IA

0085

71·

2A

U4 I AO

I3572

·1

U5 1A01 3573-1

U6 l

A013574

·1

U7

lA0

08575-2A

UR I A01 3576·1A

U9 I AO

I3577

·1 A

UI0

I A008578·2

Ull

1A008579-2

DESCRIPTION

Flat washer

~

2A-SE-EAK, Fuse, prirna ry

~

5A-SE-EAK , Fuse, secondary

~

1A-SE-EAK, Fuse, secon

dary

Termin

al GND

~

AS-CEE, Power

supply

cor d

2SC3854(0),

2SC3854(Y)

or

2SC3854(P)

2SAI490(0),

2SA

I490(Y

) or

2S AI4

90(

P)

2SDI9 13( R) ,

2SDI9

13(S),

2SDI

406(Y)

or

2S DI

406(G

R)

.6.

NPT-955G, Power transformer

NAAR-2869-2 A, FM/ AM

tune

r

pc b

oard

ass'y

NADlS-2870-2A

, Display pc

b

oard

ass'y

NAAF-2871-2A,

Prearnpli f'ier pc

board

ass'y

NAAF-2872-1,

V

olum

e pc boa rd

ass'y

NAETC-28 73-1 , V

olum

e rnotor

pc board ass'y

NAD IS-287 4-1, Vo l

ume

in

dicato

r

pc

boa

rd ass'y

NAPS-2

875

-2A, Power

amplifi

er

and

powe

r

supp

ly pc

boar

d ass'y

NASW-2876-1A,

Speake

r switch

pc

boar

d ass'y

NAETC-2877 -1A,

Speaker

termina l

pc bo ard ass' y

NA

ETC-2878-2,

Rem

ot

e contro l

terminal pc

board

ass' y

NAAF-2879-2,

Switch

pc

boa

rd

ass'y

NOTE:

:

Only Black mo del

<

S>:

On ly Silver mo de l NO TE:

TH

E

CO

M

PON

ENTS

IDE

N

TIF

IE D BY

MARK~

AR

E

CR IT ICA L F

OR

RISK O F FIRE AN D

ELE

CTI C

S

HOCK

.

REPL

A

CE

ON LY WIT H P

ART

NU MBE RS

SP

EC

IFIE D .

88

---

-- - - - --

--

----

---

CIRCUIT DESCRIPTIONS

1:

Remote

control

decoder

(LM6405G)

x.i o t

o---E

Ta

tun nr {

- -

INDIC fl TOR

-

-t-

- - - ..

-

-t-

-

-r-

-PHo

PE, ( PLfI , )

-~

---

..

PEo

(PLA

O)

f---

---

PE I (P

LA'

)

-

~---

..

T -2 PG ,

Ph

(P

Lfl7)

PG2

..

-

+-

---

P

G,

PHI

TEST

PH,

PGo

-

~---

-+-

-

t

PA '

PA>

POo

po,

PAO

-

~---

-j

P

I2

PB

2 -

-I

,----- -

-j

)

0--

PB I

PC]

po ,

Pl

I

PI O

PH,

P

A'

IN T P Oo

--I

'---

-

--j

V

oo(

'5V)

PCo

PB'

- - f-- -

-I

;>0

EX

.la

l

PF> ( PL fI

.)

pc

,

~ES

po>

PE > (P LA 2 )

~

f----

Vss

Ta v

alu

me [

can

tra

l lC

Ta

mut

e [

r Sw

itc

h

..

VCR - 2

VCR - ,

c.p

PH

---.-L!J

T- I

Ta casset te

t

erminal

• 12V

;,.0---

-Ta CD term inal

LM 64

05G

M

AIN

OFF

SP CTL

BACK UP

I N I T

STAND BV

POWER CTL

PROTEC

T

REMOTE S

ENSOR

T- 2 ON IOFF

Descrlpti on

!'ill No . Code

X't al Ccr.unic rcso ua tor

I

Pr

oset

STATION

U!'

sigIlai o utput

ter

min

al

O utput

"L

"

durin

g pu

shin

g o f rc mo tc co n tro l ST AT

IO

N LiI'

KEY

2

ST.

ur

l'r

esct S

TATION

D

OWN

sig nal

outpur

te

rmin

al

Output

"

L"

durin

g pu

shillg

o f rc

mote

co utro l ST

AT

IO

N D O W N K

EY

3 5

1'.

D N

(NDI

T

erminal

Ior

indic ntiug Light re cci v

ed

by r

cm

otc

c

out

rol ;

during

liglu

rec

cpti

on

,

"L

" is

output

5

7 Re

set

termin

al

RE

S

VO L.

U!'

V

OLUME

U!'

signa l o utpur tc

rmiu

al

Outputs

"L"

during

push

ing of

VOLLiME

ur

KEY

8

VOL.

DN

V

OLUM

E D

OW

N signa l outpur t

erm

inal

OUlpUI " LU

durin

g pu

shing

o f

VOI.UM

E

DOWN

KE Y

9

10

MUTIN

G

MUTI

NG

O

N/OFF

oUl

pull

erlllinal

Switchin

g

of

" L"

++"

H"

(ON

= "

H")

by nieans of

renr

ote

co ntro l A

UDI

O M

UTIN

G K

EY

-6-

TX-7430

No .

Code

Descrlprion

11

MUT-2

Muting

signal

out

put

terminal

for T A

PE-2

cha nge-ove r ''\-'1''

during

200mS

chang

e-over

tim e

loTAPE-2

Sele

ct

or

signal o utput te

rminul

f

or

VCR-

2 cha nge-ove r

"L"

during

200mS

aftcr

pu

shing

rcmote

contr

ol

VCR-2

KEY

12

VCR-2

13 V

CR

-1

Select

or

signal ou tp ut

terminal

for

VCR

-I change- ov c r

" L"

during

200mS

afr

er

pu

shing

r

emote

control

VCR

-1

KEY

14 C D

Select

or

CD

changc-over

signal

outpur

terminal

"

L"

during

200 mS aft

cr

pu

shing

r

emot

e

control

C D

KEY

Select

or

PHONO

chang

e-

over

signal

out

put

terminal

"L"

during

200mS

after

pu

shing

remote

co utrol

PHONO

KEY

Sele

ct

or

signal output t

erminal

for

TUNER

cha nge-o vc r

"L"

during

200mS

aftcr

pu

shing

renr

ote

control

TUN

ER

KEY

Selc

ct

or

signal o utput t

erminal

forT

A

PE

-I change- o vcr

" L"

during

200mS

after

pu

shing

r

emote

cont

rol

TAPE-I

KEY

Select

or

signal o utpul

terminal

for

TA

I'E-1 change-ovcr

Swit

chin

g

of

" J-I"+->" L" by

mcans

of rem o te co ntro!

TA

PE

-2 KEY

GND

terminal

R

cmote

control

signal

input

terminal

TAPE-

20N/OFF

control

input

terminal

1'-2

outpur

is

chang

ed-ov

cr

wiih

"L

"

input

Pror

eeti on

function

input

terminal;

with

"

J-I

"

input

,

out

put

SI'

CTL

" H"

Power

so urce

condiiion

input

terminal

;

conn

ccts to

POWER

output

;

POWER

ON

with

"

H"

15

PH

16 T U

17

1'

-1

18

1'-2

21 G ND

22

REMIN

23 T -

2CTL

24

PRO

TECr

25 CO

NT

IN

26

POWER

Power

so urce

control

outpur

terminal

Switching

of

"H"

+->

"L"

(ON

=

"H

")

27

STBY

--

T

erminal

f

or

incli

cati

on

during

STANDI3Y

;

POWER

rever

sing

outpur

Output

t

erminal

for

stnrt

of

s

elector

" L" c1ur

ing

300mS

wh cn pow

er

so urcc is

ON

O utput

terminal

f

or

back

up

during

S

TANDI3Y

Speaker

c

ontrol

outpur

terminal

(

"L

" =speake r o utput O N)

28

INIT

29 B .

UP

30 SP

CTL

31 M .

OFF

Main pow

er

sour

cc

OFF

det

cction

t

ermina

I

S

erial

signal

outpur

t

ermin

al f

or

CD

co ntrol usc

Cassett

e

deck

controi

signal

outpur t

erminal

"H"

during

200m

S aft

er

pu

shing

rernore

conrr

ol

REW

KEY

33 CD

MO

D E

35

REW

36 Fr -C

asse

ue

d

eck

control

signal o utpul te rminal

" H"

tluring

200mS

after

pu

shing

rern orc

cont

rol

rr

K

EY

C asse tte deck c

ontrol

signnl outpur

terminal

" H"

durin

g 200mS a fte r pu

shing

r

em

ore

cont

rol

REC

KEY

C assc tte

deck

c

ontr

ol

signal

o utput

terrninnl

"H"

ehrring pu

shing

of

rcin

orc co ntro l ST O P K

EY

Ca

ssett

e d

eck

control

signal o utpur t

erminal

"/-I"

timin

g

200mS

after

pu

shing

rem

ote

cout

rol

PAUS

E K

EY

Cass

ette c1eck

contr

ol signal o utp ur t

ermin

al

"

1-1

"

durin

g

200m

S a fte r pu sh ing renr ot e

cont

r

oll'LA

Y

KEY

37

REC

38

STOI'

39

PAUSE

40

PLAY

41 Von P

ower

so

urce

terminal

Ccr

ami

c re

sonator

c

onnccti

on

terminal

42 Extal

TX-7430

2.

Controller

co nnectio n

\..T CGP

Sg

-;

--"

c z r

rn

~c

rn

()O

!>JJ

-:i m

O (J)

JJ()

rn

z

-;

SI

Se

Sd

Se

Sb

f

0

Ig ib

-. l

KE

Y/O

/OOE

So

K3

K2

el

--

le KI

d MATRIX

KO

(J)

_ (J)

<0

0 ;:: -"

(J)

::E3:

0

__

(Jl

~

C

D

GlI-I-1

o

~

-

(J)

0 1- 1- 1

N - -

~

C

D

;>;

;:: ;::

OII

m

O)N

N

~(f)

(J) (J) o c>-

0<0

JJ

-<

--

rn 0

C --J

-q

0

-" .l> -

m

.o -

L......-

5

T

06

05

04

03

02

0 1

XO

XI

Voo

!

~

\J

4 2

I

4 1

2 4 0

3 3 9

4

38

5

37

6

36

7

35

8

34

9

10

I I 3 3

12

32

3 1

13

30

29

14

/5

28

/6

27

17 2 6

18

25

24

19 2 3

20

2 1 22

MUT E

AUTO/MA NUAL

UP Irorn

DO

WN re

mot

e con trol

INT

A

B

070

5

BCD TO

C DECIMAL

D

ECODE

R

0

FM 0 1

12

, 0 111 AM + B

AM+BSW

MW

~

LW

SHIFT

~

AM 10

PSC I

AM I Q701

PULSE FM

FM 1

1--

SWALLOW 10 I

. PRESCALER LOCAL

CE

~

OSC

EOI

~

I

01

04,

0105

VT t

E

02

L.P.F.

I

07

03 . NOISE

SO GATE

I IF LEVEL

CIRCUIT

I'in No .

I

Symbo l

(

'(J

P

Te

rmi

nal

- - -

..

O utp ut t

erm

inal

Ior sound

- - - -

Dcscri

ption

'

'I'E

E'' .

2 - 8 S;l - SI' Segment

Oll

Iput s

Displ

ay tube

s

i

g

n

~

1

te

rmina

l ou tp ur an d kc y rc

ruru

signa l source te

rmi

nals:

activc high. Sincc Ihesc t

ermi

nal-, can h,lIl dle JO

V,

they are co nncc rcd d

irec

tly

to the seg

meut

terminuls

of

ih e tl u

or

escen t displa y

tub

e.

lJ - 12

-

KO - KJ Key return sigll<!l

inpui s Te

rmiuat

s ror in put o f thc key ret urn sigllals

lr

om extcrual

maui

x circuit.

D-

IS

IJI

-

1)6

D igit

ou

tpu

ls D isplay tubc digil out pul signal te n u iua is:

rc tur n signal sourcc to diodc

matri

x. nctive low. 0 1 is uscd the key

IlJ, 20 X I . X 2 X 'l al

Conu

ect 10 the 4

.5M

Hz

cry

sral oscil

lutor.

21 V DO Pow

er

sot I rce

inpu

t

Dev

ice powcr so1Irce tcrmi nal; slipplie5

5V

dnr

illg no rma l operanon and

[roru the super capaci tor C7 14 Ior memo ry preservat ion. 2.5 V

- 8-

TX-7430

Pin No .

Symb

ol Te rminal Dcscripiion

22 SO Sta tion det e

etor

signal input Input terminal for deteeting

whethcr

or not a brondcast signal is bcing

reeeived during uu

io-

tuning.

Stopped

by the high level.

2:\, 24 EOI, E02

Err

or ourpurs

Char

ge pum p ou tpur of thc phas e detecror with

cons

iirures the PLL. High

level is outpu t whcn t he dividcd oscillation frcqucucy is highcr rhan

ih

c

refcrencc frcqu cncy. In the op posiie case , low level is output. Floating

occ urcs whcn thc frcq ucucies match . T he o

utp

ur is npp licd 10 the varia ble

capaci

tor

diode in rhe fro nt

end

thr

ough rhc low pass filler Q

I04

and Q

I05

.

T he

ou

lp

ut from bot h tcrm iuals is same, but only E02 is usctl.

25 CE Chip

enab

le Deviee selcction signal input t

ermin

al. High lcvcl

l.ow level ... Memory presc rv.uion ... No rma l op era no n

26 FM FM local ose illator

slgnal

input

Input terminal [or FM loeal oscill.uor is divided by I/l o or 1/17 by prcscalcr

Q7()1.

--- ---

27 AM AM loeal oscillaror

signa l

inp

ut

Termin

al for input of ihe A M local oscill.uor signal.

2R PSC Pulse swallow

com rol ou tpu t Thi s t

ermin

al

outpu

ts a signal tluu swirchcs the presc.iler division r.uio of

Q70 1 to 1/10 or 1/17 when rhc pu lse swallow meihod is used [or division.

(FM only)

29 GNO

Grou

nd

---

-

30 S

HIFT

Preset rcve rsc

indieation ou tpur Te rminal for ind iennon ou tp ul whei her

MI - M8: Low lcvcl M9 - M 10: High MI - MS or M9 - MI Il the prese t key.

level

31

32

LW

MW

Band switching

signal ourputs

Terminal

s for signal outpul switehing of cach band. High level is outpul frorn

terminal of FM (pi n 11

0.

33) .md low lcve l is out put lro rn orher t erminals

(pin no. 31 & 32) duriug r M rece prion

33

34

35

30

37

r-M

A

B

C

0

Preset srarion

indica rion OUlpU

IS

Te

rmi nals for

MI M2

A I ()

n () I

C () ()

0 () ()

..

--

ßCO

code outpur of pre sct stutio n indic.

uor.

M3 M4 M5 MIl M7 MS

I () I 0 I ()

I () 0 I I 0

() I I I I ()

() () () () () I

3R INT Not

uscd.

39

MEMO

RY Mernory down

inpu t

Terminal

for down signal input of preset

Acrive low. mc m

ory.

-

,.j()

4 \

42

ME M

OR

Y

UP

AUTO

I

MANUAL

MUTE

Memory up

inpu

t

Au

to/Ma

nual

indi

cation

outp

ur

Muring outpu l

-

T

ermin

al for up signa l inpu t of pre sct memory.

Aciive low.

Te

rminal Ior irulication

output

whether or auto i he tuni ng mod e.

This t

erm

inal becom es high dm ing ,1

11

10 morle and low (hlring mununl mode,

Output t

ermin

al which

mute

s rhe shock noisc oeeurring whcn rhe PLL is

released; nctivc high. T in: muti ug signal is outpur as shown below.

UP/OOWN

of manu ul/auto moc le , presel Illelllory is reealled , b.uid swirching

ancl

preset

scan.

TX·7

430

Control key and diode matrix connections

K3('1) K2(

111)

KI

(II)

KII( 12)

' -

--

Sg(2)

M4 /M 14 M3 /

MIJ

M2/M 12 MI

/MII

Sr(3) MH

/MI

H M

7/M17

MU

M I(, M

5/M1

5

-

--

----

S

e(4)

I'IU

,SET

MIIJIM20

M3/M

IY

SC

A N

_ .

---

..

_-

-.

--

S

d(5)

S I-

f1n

LW M W " M

Sc(6)

A U

TO

M

EM

OI

~

Y

I)

OWN

UI'

MAN

UAL

Sb(

7) HI -l l L

l'NIJ

I) IS I'

I.A

Y

I'R

O

GI

~

A

M

W I

DEI

NA R

IW

W

--

---

-

Sa( H)

'l0/'ik

Hz '

LW

2 ' LW I

'A

M

- -

-----

[) I(I H) ' I3A N I) 0 ' IJA N D I ' I

11tH

ST

AT

IC/

DY

N A

•

Dio

de

111"1

rix rnblc I

llA

N DIl BA N D I

I

~E GI

O

N

FI~E

QUEN

C

Y

C I IA NN E L

H

AN

G E S

I'A

CE

-- - _ . -

D7 J0 1)70 '1

0 0 U S .A . R7.'1- 107.'1M Hz 200k H ,.

1 I Europe 87 .50-

I08

.00 M H z

50k

Hz.

A M IOkH ,J9

kH

z

FI~

E

Q

UE

N

C

Y

I

~A

N

GE

CII ANN EL SI'AC E

D711

lJ 0 530- 1620 kH z 10kH z

0

--

I

1

522

- 161l k

Hz

9k

Hz

11

53 1- I

W2k

Hz

'1k Hz

.-

0:

Op

en I:

Co

nue ct

the

diocle (I S

SI3

3) . tnhle 2

11

: Open I: Councct the diode ( 1

.'1.'1

133). iable 3

n A N DII,

DANDI

.. ..

"M

I" I/\(I oc llillgs . See tnble 2.

lO

/lIkH

z .

....

AM

I

,,"

\(I oe ll illgs . See tub le 3.

3. Muting circuit

lro m

mUl

in9 Ou

IPU!

0 ' c o o

trou

er rc

070

2 ri1\ '12

Lch

from

TKC

020

4

8

,-

- -

-,

0 106

011 2

0 7 15

R7 5 3 M

ONO

Reh

01 03

FM IF &

AM rad io

svstam

16

0 20 1

S

tereo

dec

oder

The

rn

uting

cir

cuit

operat es in the follo

wing

cases ,

1.Wb ile pi1l 4 2 of co ut roller IC ou t pu ls thc high lcvc l.

Q207

and

Q208 are

tumed

on and

muting

is

clo

sed in

the foll ow ing "cascs

.f

Ü

While

the manu al

UP

/DOWN

swi tch

is

being

held

down.

(2)When

a stat ion in th e m

emory

is

recalled

.

and

(3)

Whil

e a

radi

o sta tio n is be ing received

using

aut

o search

tuning

.

2.

When

an FM st ati on is not being rec

eive

d (a nd

the

muti

ng s

witch

is on) .

Thc IF levcl in thc I:M

110

systcru (

sct

at

IUOI

SO

llllll

ili g

is 0 I'C llC U a t 17 .Zd Br

and

zer o-c

ross

d ct c

cti

ou

c

irc

uit

(Iuning

po int 55k Hz

(100kHz

step) :

30kHz.

(5 0 kHz. stcp) -arc o utput

a t piu R th rough the A ND circuit. Wheu a slation is tur ued ,

tlie o

utp

ut goe s to lhe 10

11'

levcl .

"'h

en output gocs 10 the 1

011'

level,

Q1l

5 tur ncd of'I,

Q I 16 is tu rn ed

Oll

and

Q207

nn d Q2

08

are

tunr

ed off,

so

rnut

ing is

operred.

At

the

sarne

, pin 16 of

ster

eo

de cod er Q201 g

oes

to th e low level . so

the

VCO

oscillator st

art

s ,

-1

0-

TX·7430

4.

PLL

tuned

circuit

26 I

r-

sc

A

block

diagram

of

the

tuned

of

the

PLL

is

shown

in

the

above

diagram.

Operation

during

AM

reception

The

reception

frequency

is

applied

to

the

pro gr

arn

ma

ble

divider

wnere

it is divi ded to

lI

N

and

outpur

as fv .

This

is applied

to

the

phase

c

ornpar

aror

where it is

cornparated

with

frequenc

y

reference

fr (9k H z for G

/W

model

s a nd

10kHz

for

D rn odel l . If fr

and

fv di

ffer

. Eo

equal

to

the

difference

in Irequency is

output.Since

err

or outpur Eo

is a

pulse

waveforrn

. it is

passed

t

hr

ough

the

low

pass

filter

t o

change

it

into

oe

volt

age

Vd ,

which

is

applied

to

the

variable

capacitor

diode

in

the

front

end to

change

the

reception

frequenc

y .

Thi

s

continues

unt

il fv

and

fr

are

the

sarne

and

Eo·O

.

Operation

du rin g FM

reception

The

pulse

s

wallo

w

metho

d is

used

in

the

pr e

scaler

of

thi

s

unit

. In th is t

ype

of

pre

scaler

. a supplernent

ary

number

5.

Auto

search

tuning

circuit

TONED

INDICATOR

Q103

8 +B

FM

IF&AM

cc

w

SY

STEM

-.J

07

03

-.J

12 2

2N

0

TO P

OCC

STEREO r-- f--

DE

CODER

06

u

Q113 D107

N

OI

SE

1""1

DETECTOR

(chan

ged

acc

ordirng

to

the

program

code

input)

and

the

divided

reception

frequency

from

the

presca

ler

are

combined

in

the

c

ontro!

c

ounter

an d

the

presca

ler' s

divi si

on

Iac

ror is s

wit

ch ed

1/16

or

1/!7

acco rding

to ex

tern

al contro l

(I/!6

whe n th e PSC t

ermin

al is "H "

and 1

/17

when it is " L" ).

The

st

at

ion osc illat or

frequenc

y is

app

lied

to

the

program

-

m

able

div

ider

.

but

the

pr

ograrnm

abl

e d

ivider

has

an

upper

frequenc

y

limit

of

only

30MHz.

so

the

pulse

swallow-type

pr

escaler

i

which

can

be

used

up to

ISOMHz.is

insert

ed for

divi

sion

to

1/Np;

The

sign a l is

applied

to

the

pr

ogr

ammab

le

divider

and

divided

t o l

/N

. T he

result

is c

om

pared

with a

25kHz

frequ

ency re fere nce in

the

phase

derector

and

e

rro

r

is

outpur

as Eo

until

a

rnatch

is obta ined a s in AM

oper

at

ion

.

During

FM

recept

ion

.

this

is operated by

the

IF

leve

l

dere

c-

ti on a nd

zer

o

cr

oss

detecti

on ci rc uits incl ud ed in

the

FM

IF & AM systern IC of Q

I03

and by th e

no

isc co m

po

nent d

ete

ct io n

circuit of Q113 . When a sta tion is

tu

ned , the o utp ur of all

ou t puts go t o th e l

ow

level so Q

703

goes from o n to off,

causing pin 22

of

the

con

tro ller IC t o go to the h igh leve l

(0

co mp lete 3U to sea rch t

unin

g.

During

AM

recepti

on.

this

is

operared

by

the

IF

level

derec-

tion

included

in th e FM

IF

& AM

system

JC of Q

I03.

When

a

station

is

tumed

. Q

703

goes to

off,

causin

g pin 22 of th e co

ntr

oll er

JC to go to th e high level to co mplete a ut o search tu ning.

-11-

TX·

7430

z

.

o

z

o

z

~

oe:(

a:

Cl

-

oe:(

0

~

U

0

...J

m

I .

z

Z

0

f-

U

w

CI)

er:

w

-

u..

-

...J

Q.

IOtfJN

O)

]l

Ol"

J l:l

UJ J.U I"I

S:TW)

S l "' NI

"t:lH

l O t:l J NO '

ll

C!t' )1f

1 11' "

0

Q

0 ,

2

~

«

<C

c r u

~

> >

~

I U>>

-12-

TX-7430

I

I I

z

0 I

I-

I

u

UJ

CI) L_

0:::

UJ

Z

z

. ,

~

.

2

~

.

~

c a

::J .0

I-

0

I

BLOCK DIAGRAM OF IC

LC7818

(Function

Switch)

115w I

I 1 1SW A}

Al

~

o

-'...:'

-

--j

~

,I 11sw8J

BI

0

~

C

l

~

'

SCl

o1

~

-'-,

'-

I

-+<:

>\---I

~

s/ _ ll 'iw I

EI

-,I

I 11

swGI

l

M'~

,I

mw"

O

U

T

1

-

~

' MGUI

<>-

I

~

O

~

I

-

-:;

l

f-

"I1MC1L

.,....;

"-'-

---~

>_

-01

o

o:

z

8

o

u:

-;

;;.

~

w

>

w

-----.l!.-..o

'JOD

I"

-----0

VS \

~V

,

'

11Sw ....) 1,0 A2

I !.W8 )

1"

8 1

I SwCl I"

I" C1

rt sw )

02

rt sw I I"

I"

oE

1

SOUilCE7

11

,w

G) I"

1M7

11Sw' l I" O

Uf]

p PC1161C3 (Stereo

decoder)

I

IU 11

- "I

t..Cl l

O----

BCTL

o--'

,

!..

,I_ _

-,-

-OL>

--j

10

I"

MU

TE

Voo VEE

TM2

LC7818

TM!

OU

T1

50UR

CE

2 SOURCEI

E2 EI

02 01

C2 CI

82 8 1

AI

pPA80C

(Buffer)

16 2 15 3 14 13 5 12 6 10

-14-

" 7

Rl

20K

R2

20 K

TX·7430

LB1630

(Motor

Drive)

TRUTH

TABLE

IN 1 IN 2

OU

T\

OUT

2 MOTOR

H L H L Normal

L H L H Reverse

H H

OFF

eH

Wail

L L

OFF

Wait

Voull Voul2

7

,--....,.---t--~..,...+-t-..,....~--,.---t---....,.--OVcc

Vinl

Vconl

2

l---+-------+..-II-~:)C>ND

V

in

2

Pin6:NC

74LS145

(BCD to decimal decoder)

O

uTP

UTS

INP

UTS

NO 0 ,, ) .s6 1,

0 CB A •

LH H H HHH HH H

I

0 LLL L

H H HHHHHHH

L

L L L H

, H H LHHHHH H H

HL

lL

H., HLH HHHH H

) H H

l I .

, HHHHLHHHH H

L HLL

H HHHHLHHH H

LHLH

s

H H HHHH LHHH

I

6 LH HL

LH HH

" H H H HHH HLH H

• C LL HH H HH H H H l H

• HH HH H HHHlHll H "

H HHHH H H HHH

Hl H H HHHHHH H H

HHl HHHHHHHHH

HLHL

:1:

HHl HHHHHH H H H

HHH HHHHHHHHH

~

I:

HHHH H HHHHHHHHH

LA1266

(FM

IF and AM radio system)

.

~

"

0

~~

. x

~

s

~

• s

~

o

z

oo

"

~

o

~

o

I1PA81C (Buffer)

15 14 13 12

11

10

16

,..----<_-+-I-.-

--.-_-+-+-

- __-

--.

-+-_ - .._-

..-

H

>-

----<

t-

---<

H

4-

- _ - _ --+_ - _ -

+_+------<1

9

RBI

'--

t-

--

-+-

-+

---

..--

+-

--

--..

---,I-

--~

_+_

--

---..

-

f---

--~-

_D

8

67

20KO RB2 : 2KO R2 100KO

2 5

RBI ' 20KO Rl

TX-7430

f1

PB553AC (Prescaler)

Pin Connection

Block Diagram

PSC

(HK

IN

NJM4558!4559!4560

(Op.

amplifier)

Vcc

J. Pin J (Vcc)

2. Pin 2 (IN)

3. Pin 3 (CHK)

4. Pin 4 (GND)

5. Pin 5 (OUT)

6. Pin 6 (PSC)

7. Pin

7,8

T

iming

Chart

........ +5 volts Supply

........ FM Jocal oscillator sigual inpu t

........ Check terminal

........ Ground terminal

........ Prescaler terminal

........ Prescaler control terminal

........ Not con nected

IM

CHK

PSC

X ((NADLE

OUI

PUl

St)

+-

- - -

-..1

L j

-+-

-+

f---

- -

-17

pvlus - -

--+

-

--16

PJh~s--

~

BA6124!LB1403

(Signal meter driver)

4066B!LC4966

(Analog

switch)

SW 0 SW C

CONT A ' IN/ OUT 'b UT/ IN

CaNT0 OUTI IN INI OUT

12 10 B

1 5

INl a UT OUTIIN Ca NT B

Vss

CaNT/ IN!, IN/ OUT! CONTC

'----

---

~

SW A SW B

TX·7430

PACKING PROCEDURES

8 Aeeessary bag ass' y

2934 1115

292 092

232 119

2010 141

20 10

159

30 10054

241

40003

29365020

29

100006A

DES

CR

IPTION

850

X650 mm, Poly-vinyl bag

Master ear to n box (Silver mod el)

Master car to n box (Black mod el)

Sealing hoo k

Pad R

Pad L

Tape

Dam plon tapc

REF. NO.

1

2

3

4

5

6

7

PART

NO.

29 100034

2905 1456

290514 58

282301

290911 58A

29091157

2911003 2

260012

Instruetion manu al

FM antcnna

NMA-3052, AM loop ante nna

Co nnecti on

cord

for easselle deck

Connect ion cor d for CD player

UM-3, Two

batter

ies

RC-82S,

Remote

contro!

trans

mitter

Wa

rranty

card

250 X

350mm

, Poly-vinyl bag

ADJUSTMENT PROCEDURES

P

reparation

•

Standard

knob

position

•

Input

TAPE MONITOR SOURCE

FM mono: 1kHz, 75kHz devi., 60d B/pV VOLUME Maximum

FM stereo: 1kHz, L+R 67.5kHz devi.: Pilot signal 19kHz BASS/TREBLE/BALANCE Center

7.5kHz devi. MODE STEREO

AM:

400Hz , 30%mod. , SPEAKER

'"

, A

•

Output

SIMULATED STEREO ,

OFF

Connect the non-inductive type resistor of 8 ohms to the SELECTIVE TONE CONTROL OFF

speaker terminal A of J

en

and right charmels unless other-

wise noted.

Amplifier

section

J . Idling current adjustment

Connect the DC voltmeter to the terminals IID and VCT on

the power amplifier pc board .

Adjust the serni-fixed resistors R507 and R607 so that the

indication of voltrneter is 7.5 ± 1.5mV.

Notes: VOLUME Maximum, Open load,

Adjust after switching on for 5 minutes.

J

~

x u -

'"

-"

~

<X

°0 ° ° u°0°

.J 0

00

~

0

00

,

<X

P

ower

amplif

ier pe board

_

o:

F

90

2 6

I H I

F 9 01 6

~

<]

~~

~

-18-

TX·7430

PRINTED CIRCUIT BOARD - PARTS LIST

POWER

AMPLIFIER

AND

POWER SUPPLY pe

BOARD

(NAPS

·2875·2A)

CIRCUIT NO. PART NO. DESCRIPTION

Q805

Q807 , Q903

Q904

2211793

2211256

22 11255,

22 10746 0r

2SA992( E)

2SC18 15(BL)

2SCI8 15(GR),

2SC945 A(P) or

Trans istors 2212485 JC50 1(Q)

Q501, Q601 22 11371 0r

2211372 2SC225 9(0 ·001) or

2SC2259

(0·

002) Q902, Q905 220 1754,

2201755, 2S0 1913( R),

2S0

1913(S),

05 02, Q602 221 1732 0r

2211 733

2SCl

845(F) or

2SCI 84 5(E) 2201404 0r

2201 405

2S0

1406 (Y) or

2S0

1406 (GR )

Q503, Q603 2211 353 0r 2SA949

(0

) or Diodes

Q

504,0604

0 505, Q605

0 506 , Q606

22 11354

22116

33 0r

2211634

22 11255

22 12653 0r

2SA949(Y)

2SC2229

(0)

or

2SC2229(Y)

2SC I8 1

5(GR)

2SC34 21

(0)

or

050

1

,0

502

05

03

,06

03

0802

090

1·0904

223 163

4000068

223163

223897

0r

223

80003

ISSI B

VOI222

ISS 133

P300

0L

or

I

N5402F

Q507 , Q607 2212654

22 1164 3 0r 2SC3421(Y)

2SA965(0 ) or

0905

,

0906

2239651 0r

2243 241 R0 1.3EBl or

MTZ1.3A

2211644

0508,

0608·~

2201 78 3, 2SA965(Y)

2S08

54(O),

0907

22386 2 0r

223890

WLOl or

WOI RL

2201784 0r

220 1786 2SC38S 4(Y) or

2SC3854(P)

0908

2238960r

223880

1N4003F or

GP10 1N4003

Q509 ,

0609

o: 220 1773,

2

201774

0r

2201776

2SA 1490(

0),

2SA I49 0(Y) or

2SA 1490( P)

0 909

0910

223163

2239631 or

22

4323

1

ISS133

RO

l2E

BI or

MTZ12A

0911 22 39

4930r

R06

.2EB3 0r

2243 163 MTZ6.2C

CAUTION: Replaccment for tra nsistor of rnark c if neeessary,

must be made from the same bcta group (HFE) as thc Capacitors

original type. C50 l

,C

601

CS13, C6 13 354

780229

35472 1019 2.21lF, 50V, Elect,

100ll F, 6.3V, Elect.

C515 35

47222

19 2201lF, 6.3V, Eleet.

Ex. 2SC385 4(

0)

T 2SA1490fO)

T C516

,C5

17

C552 35

4790

479

35472 2219 4.71lF, 100V, Elect.

2201lF, 6.3V, Elect,

('553 3547

80109

IIlF, 50V. Elect.

Same beta group C806 354 744709 471lF, 16V. Elcct .

0551·

0 553

2211732

0r 2SCI845(1') or C90 1 3500065A O.OIIlF, AC400V/l 25V, IS

06

51 22117 33 2SCl845 ([ ) C904

,('

905 350 4207 6800ll F, 50 V, Eleet.

0554,

0 804 221 1792 or 2SA992 (I:) or C906, ("907 35476 1019 100llF, 35V,

E1

eet.

C908, C909

3912422

17 2201lF, 16V, Eleet.

J57.

n

CD

J545

J544

~

J

5

4

3

E

8 ?3'

cr

-"

--l

I

•

f L

'"

...

""

~

*

'" .

I

L

'"

n

ce

o

'"

J556

1----

f:';

''''

, 0

,

L I

"'

.

~

.

I

I fL

n

.",

~

,

~

ce JJ

CD

W

E B

Q903

Q902

B Q509

POWER

AMPLI

FIER AND

POWER

SUPPLY

.,

'"

o

"D

CD

~'"

~

c~

~

<D

J

..-

_

I

~

JNto

C907 C909 I

0

_

~

1

_

CD

R8386!°Ls

0 "' _

"' ''' 0

J l l l l

CD

R903

R902

C906

0905

C908

PRINTED CIRCUIT BOARD VIEW FROM BOTTOM S

ACI IGI

ACllDl

E

00000

gl s

-

"

r

-

~

5e

8

o

~

0 C 0

W N CD CD

o 0

w ...

NOTE : THE COMPONENTS lDENTIFIEO BY MARK

.6-

ARE CRIT ICAL FOR RISK OF FIRE ANO

ELECTRI C SHOCK. REPLACE ONLY WlTH

PART NUMBER SPECIFIEO.

- 21-

TX-7430

C911

C912

C914

C915

C916

C918

C919

C920

C921

35475 222 9

3547410 19

354744709

354 744 719

35476 1019

354743319

3547247 19

3547 62209

35476 10 19

~

8

AC-H

5901

POWER

5901

C901

I-

C902

o

51<'

RL901

AC

PTlO) J503

8 -JS0

2-

-8--.-.8

5WlGl

SWIOI

PTIGI

8 [

ID~

~

r

lE J5 86 J587

J585

- '-Js

ä4-

-

·

-

~

[

~

.

3

-

RL801

-(

>!.

5..?l

110

0

R611

C

UI

N m

J527

EE

C Q609

BO

ARD

-22-

22001lF, 25V, ElceL

1001lF, 16V, Elect .

471lF, 16V, EleeL

4701lF,

16V,

Elect.

100ll F, 35 V, Eleet.

33

0llF

, 16V, E!eet .

470

llF , 6.3V, Eleet.

221lF, 35V , Eleet.

10011

F, 35 V, Elect .

AC3

E AC210l AC2lGl

8888888

.,

J523

R50 7, R60 7

R510 , R610

R511 , R611

R512 , R61 2

R51 3

,R61

3

R516 , R616

R521

R902-R905

R908

R912

R914

S90 1

RL801

RL902

P1l6

P352

F90

2a·F

906a

F902

F90 3, F904

F905. F906

Resistars

52

1006

4

442

522714

44

1620

104

40

000

63

400 006 3

442520824

442

5201 04

441 62

3914

4416

204 74

441 721 804

442 5

222

04

Switch

25

0353

98

Relays

25065 134

25

0652

98

Socket

25050 270

Plug

25055

133

Fuseholders

25

0500

65

Fuses

25207 4

252078

252070

N

06HR1

0KB D, Serni-Iixed

270o hm, 1/2W, Metal oxide film

l

ohm,

1W, Metal oxide film

0.47ohm, 2W, Meta! plate

0.47ohm, 2W, Meta! plat e

8.2o

hm, 1/2W, Metal oxide film

lo

hm, 1/2W, Meta! oxide film

390o

hm, 1W, Metal oxide film

4.

7ohm

, 1W, Meta! oxide film

l Sohrn, 2W, Metal oxide film

22o hm, 1/2W, Metal oxide film

NPS-111-L362P, Power

NRL-2P5A-DC 24-07

NRL-1PI A-DC12-40

NSCT·6P98

NPLG·

3Pl1

7

~

YSH403 T

~

2A-SE-EAK, Primary

~

5A-SE·E AK, Second ary

~

1A-SE-EA K, Seco ndary

Onkyo TX-7430 User manual

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