Harman kardon 730 User manual

The Harman/Kardon

Model 730

AM/FM/Stereo

FM

Solid State Receiver

harman/kardon

PRECAUTIONS

1.

Always disconnect

the

chassis from power line when soldering. Turning

the

power switch

OFF

is

not

enough.

Power line leakage passing through

the

heating element may destroy

the

transistors.

2. Never

attempt

to

do

any work

on

the

transistor amplifiers

without

first disconnecting

the

AC line cord and

waiting until

the

power supply filter capacitors have discharged.

3. Replacement for

output

and driver transistors, if necessary,

must

be made from

the

same beta group

as

the

original

type.

4.

If

one

output

transistor burns

out

(open

or

short) always remove

all

the

output

transistors

in

that

channel

and

check

the

bias adjustment,

the

control and

other

parts

in

the

network

with an

ohmmeter

before inserting a new

transistor.

All

transistors

in

one channel will be destroyed if

the

base biasing circuit

is

open

on

the

emitter

end.

5. When mounting a replacement power transistor, be sure

that

the

bottom

of

the

flange,

the

mica insulators

and

the

surface

of

the

heat sink are free

of

foreign

matter,

for

they

may cause transistor failure.

6. Silicon grease must be applied between

the

transistor and

the

mica insulator, and between

the

mica insulator and

the

heat

sink for

better

heat

conduction.

7. Fuses must be replaced with size and

type

indicated. Use

of

other

types

can expose

components

to

destructive

current

levels.

-2

ALIGNMENT

PROCEDURES

Step

1

2

3

Step

1

2

3

Step

1

2

3

SEPARATION ADJUSTMENT

INSTRUMENTS: Stereo Signal Generator

VTVM

NOTE: Set

Function

Selector Switch

to

FM.

Connect Signal

Source

to

FM

Antenna

Terminals.

DIAL

FREQUENCY

SIGNAL

STRENGTH

SETTING

CONNECT

OUTPUT

TO

98MHz

1mV

(60dB)

Tune

for

Zero

VTVM

to

Left

Right Signal

Volts

DC

at

Tape

Out

Jack

R220

(15

kohm)

98MHz

VTVM

to

Right

Left

Signal Tape

Out

Jack

Get best balanced

minimum

output

after

repetitive

check between

right

and

left

above.

STEREO INDICATOR LAMP ADJUSTMENT

INSTRUMENTS: Stereo Signal Generator

NOTE: Set Function Selector Switch

to

FM.

Connect Signal Source

to

FM

Antenna

Terminals.

DIAL

FREQUENCY

SIGNAL

STRENGTH

SETTING

OUTPUT

98MHz

32µV

(30dB) Tune

for

Stereo

Indicator

(Stereo Zero

Volts

Lamp

Signal)

DC

at

R220

(15 k

ohm)

ADJUST

VR302

ADJUST

VR353

Check Pilot level

that

Stereo

Indicator

lights

at

6%

of

pilot

level and

that

the

indicator

does

not

light

at

1

%.

Return

pilot

level

to

9% and check Stereo Separation

at

1

kHz,

100Hz

and 1

0kHz.

QUIETING METER ADJUSTMENT

INSTRUMENT:

FM

Signal Generator

NOTE: Set

Function

Selector Switch

to

FM.

Connect

Signal Source

to

FM

Antenna Terminals.

DIAL

FREQUENCY

SIGNAL

STRENGTH

SETTING

OUTPUT

ADJUST

---

-----

Quiet

Point Quieting Meter VR351

on

Band

---

-----

VR352

98MHz

20µV

(26dB) Tune

for

Zero VR351

Volts

DC

at

R220

(15 k

ohm)

-3-

ADJUST FOR

Minimum

Output

Minimum

Output

ADJUST FOR

Light

ON

ADJUST FOR

Needle

to

Deflect

Over Zero

(to

Right)

To

Indicate

Zero

To

Indicate 6

I

I>

Step

1

2

3

4

5

6

7

8

9

10

Step

1

FM

ALIGNMENT

PROCEDURE

INSTRUMENTS:

FM

Signal Generator

modulated

with

1000Hz

at

100%. (75kHz)

AC/DC VTVM and Oscilloscope.

NOTE: Set

Function

Selector Switch

to

FM.

Connect ~ignal Source

to

FM

Antenna

Terminals.

DIAL

CONNECT

OUTPUT

FREQUENCY

SIGNAL

STRENGTH

SETTING

METER

TO

---

-----

Quiet

Point

Oscilloscope

to

on

Band

R220

(15

kohm)

---

-----

Near

-1dB

of

Limiter

Tune

for

Oscilloscope

to

98MHz

Saturation Zero

Volts

Tape

Out

Jack

DC

at

R220

(15

k

ohm)

Repeat Steps 2 and 3

until

no

further

improvement

is

noticed.

90MHz

Approx.

10µV

90MHz

Oscilloscope

to

R220

(15

k ohm)

106MHz

Approx.

1

0µV

106MHz

Repeat Steps 5 and 6

until

no

further

improvement

is

noticed.

90MHz

-3dB

of

Limiter

Tune

for

VTVM

and Oscilloscope

Saturation Zero

Volts

to

Tape

Out

Jack

DC

at

R220

(15kohm)

106MHz

Repeat Steps 8 and 9

until

no

further

improvement

is

noticed.

MPX ADJUSTMENT

INSTRUMENT: Frequency

Counter

Signal Generator

NOTE: Set

Function

Selector Switch

to

FM.

Connect Signal Source

to

FM

Antenna Terminals.

DIAL

FREQUENCY

SIGNAL

STRENGTH

SETTING

CONNECT

OUTPUT

TO

98MHz

1mV

(60dB) Tune

for

Frequency

Counter

(unmodulated) Zero

Volts

to

LP301

DC

at

R220

(15 k

ohm)

-4-

ADJUST

IF

Top

and

Bottom

(on

Front

End)

T201

Top

T201

Bottom

LO(on

Front

End)

TC0(on

Front

End)

LR1

LR2

LA

TCR1

TCR2

TCA

ADJUST

VR301

ADJUST FOR

Maximum

Noise

Zero

Volts

DC

Maximum

Symmetry

on Oscilloscope

Zero

Volts

DC

Zero

Volts

DC

Maximum

Output

Maximum

Output

ADJUST FOR

19kHz

±50Hz

AM ALIGNMENT PROCEDURE

INSTRUMENTS:

AM

Signal Generator modulated

with

400Hz

at

30%.

VTVM.

AM

Sweep

Generator

and Oscilloscope.

NOTE:

Set

Function Selector Switch

to

AM

Connect signal source

to

a

test

loop placed

to

radiate signals into

AM

Antenna Loop Stick (L252).

CONNECT

OUTPUT

DIAL

Step

SIGNAL

SOURCE

FREQUENCY

METER

TO

SETTING

ADJUST

FOR

1

AM

Sweep Generator

455kHz

VTVM

and Oscilloscope Quiet

Point

T252

Maximum

and

Top

to

R272

(4.7 k

ohm)

Near (Ceramic Flat Pattern

1600kHz

Filter)

on

Oscilloscope

2

T253

Maximum

Output

3

T254

Maximum

Output

4 Repeat Steps 1

through

3

for

best

sensitivity.

5

AM

Signal Generator

600kHz

VTVM

and Oscilloscope

600kHz

L251

Maximum

Output

to

R272

(4.7 k

ohm)

6

1600kHz 1600kHz

TC1

Maximum

Output

(on

Front

End)

7 Repeat Steps 5 and 6

for

best

dial

accuracy.

8

AM

Signal Generator

600kHz

VTVM

and Oscilloscope

600kHz

L252

to

R272

(4.7 k

ohm)

T251

Maximum

Output

9

1600kHz

TC2

Maximum

Output

TC3

10

Repeat Steps 8 and 9

for

best

sensitivity.

POWER

AMPLIFIER

IDLING

ADJUSTMENT

INSTRUMENTS:

DC

VTVM

NOTE: Set Function Selector Switch

to

AUX

Set Volume Control

to

minimum and set Tone/Balance controls

to

mid position.

Set Stereo/Mono Switch

to

Stereo.

Speaker Switch

to

ON.

Connect

8

ohm

(50W) resistor across left and right speaker terminals.

Step

CONNECT

OUTPUT

TO

ADJUST

FOR

1 DC

VTVM

between

0418

(collector)

VR402

35mV

±5mV

and

0420

(Collector)

2 DC

VTVM

between

0417

(collector)

VR401

35mV±5mV

and

0419

(Collector)

-5-

SCHEMATIC DIAGRAM -FRONT END

0

<:t

~

en

C")

1-

w

LL

1-

LLL::::,

LL-o

a:

_,J

.....

-

.....

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M-..,t

ro

['-..

+N

..--

r-,0

a:~

.....

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.......

......

.......

.....

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......

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u,

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....

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m

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....

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botto~

,~

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T201

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bottom

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4

1-''

ff.

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i

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r-..::,

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,~

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~~

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·-

..._,

~-C)

-~

-~~

"-'

<C

VR401

VR402

;

VR302

LO

TC

0

IF

T201

top top

R220

15

k ohm

Li

-----L252

..

TC

1

I.

TC

2

,

..

_.,I· TC3

..

-. '

~

:!JI

TC

R2

~

•

~-

TCR1

i,

Si!

,-,,~

TC

A

~•iw:J

LR1

~

~~"/'

1

F''

1

1l1t

:::

LA

1

i'.

·11

LR2

.. ,I

L251

I I T251

~

,~

T252

,

ti.

T253

I

II

T254

)>

...

c5

z

3:

m

z

....

-a

0

z

~

I

II

R272

--

·11

4.7

k

ohm

VR301

LP301

::

VR

353

VR352

VR351

WIRING

DIAGRAM-

REGULAR

AND

MULTIVOLTAGE

FRONT END

,-

I

--7

I

YELLOW

GREEN

BLACK

ORANGE

I

C220

I

C219

I

-9-

MAIN

RECTIFIER

P.C.

BOARD

TO

LP10

TO

LP11

-~===:::::!J

TO

LP2

TO

LP3

GREEN

RED

PURPLE

VR354

MUTE ADJUST

SW2

FM

MUTING

MODE/CONTROL

CIRCUIT

SIDE B

WHITE

TO

LP603

LAMP

P.C.

BOARD

:,

/:_i

',:

:

/~Jt:1'~~~4,;§;~;

0

1~

1

:E"

BLUE

YELLOW

GRAY

TO

LAG RECTIFIER

P.C.

BOARD

BLACK

BLUE

~--+~B~LA~c~•~•TO

EARTH

TO

MAIN

RECTIFIER

P.C.

BOARD

.___--,

GREEN

SPEAKER

PROTECTOR

-10-

RED

ORANGE

RED

WHITE

GREEN

PURPL

08-t\NGJ:

BLUE

YELLOW

GRAY

BLUE

TO LP19

:::::::::::_.

SUB

RECTIFIER -

RED

P.C.

BOARD

MODE/CONTROL

CIRCUIT

SIDE

A

BLUE

ORANGE

WHITE

WIRING DIAGRAM

FU5

rG.:.:,R~E:;,;EN:,:_

_________________________________________________

~~

250V

3A

GREEN

BLACK

BLUE

GREEN

TO LP502 BLUE

TONE CONTROL

P.C.

BOARD-="'"-----+

TO CHASSIS

YELLOW

-

11

-

TO

LP503 RED

S01

~

SWITCHED

"'

(!)

GRAY

0

TO

MAIN

A~P

IN JACK

(L)

(RI

W.J

2

-'

LJJ

g,

LJJ

::J

"'

>===o..=.J

1

I

)BLACK

_

_l!IE--,-+B:;.;L;;:.A.;;q~..L.

TO

LP501

(J

BLACK

I

,-.rn J2 EARTH

I

i

GREEN

'----=:.:a:.~-+--+--SPEAKER

BLUE OUTPUT

.._

__

(_)

.;;.;;.;;;.=..---4---41---1EARTH

I

S02

UN SWITCHED

P1

CB1

(R)

PL1

POINTER LAMP

PL9

RED

GREEN

BLACK

PWR

SWITCH

LAMP -~-.....:B~L~U~E

_______

_,

SUB

RECTIFIER

CIRCUIT

SIDE

~r-ll---------1---.:.:G.:.:,R.._EE=,:N.:....;-TO

LP559

~

PURPLE

_.

TO

LP

560

TO

SWS

(!)

CB2

(L)

SPEAKER

PROTECTOR

-

12

-

,.,:

u

<(

-'

a,

:c

s:

w

(!)

z

<(

cc

0

TO

CO-AA5

0

AM/FM

TUNER/

IF,

P.C.

BOARD

TO CO-GG3

FUNCTION SWITCH

L...:~-TO

CO-AA7

AM/FM

TUNER/IF,

P.C.

BOARD

FU6

250V

1A

WIRING DIAGRAM -MULTIVOLTAGE

GREEN

BLACK

WHITE

BLACK

RED

FUS

rG~R~E~E~N

_________________________________________________

_..:;~~

250V

3A

GREEN

BLACK

BLUE

GREEN

TO LP502 BLUE

TONE CONTROL

P.C.

BOARD•=~---+

TO CHASSIS

-13-

S01

~

SWITCHED

a:

<..?

GRAY

MAIN RECTIFIER 0

0

S02

UN SWITCHED

TO MAIN AMP IN JACK

(L) (R)

-BB

LE

'"

...J

0..

a:

::J

0..

z

w

a:

<..?

BLACK

LP501

J2

EARTH

GREEN

Pl

CB1

(R)

PL1

POINTER LAMP

PL9

RED

GREEN

BLACK

PWR

SWITCH

LAMP

-~-B~L~U~E._

______

.J

SUB RECTIFIER

CIRCUIT

SIDE w

<..?

z

"'

~

Q

...J

w

a,

t:::

.u

<..?

z

<(

a:

0

TO

CO-AAS

AM/FM

TUNER/

IF,

P.C.

BOARD

-----TO

CO-GG3

~---------...,_

__

_.G_.R,._E,.EN"'----

TO LP559

~

PURPLE

..

TO

LP

560

TO

SWB

<..?

CB2

(L)

SPEAKER

PROTECTOR

-14-

FUNCTION SWITCH

'--,;,,;R.=.ED:;.,;i

► TO

CO-AA7

AM/FM

TUNER/IF,

P.C.

BOARD

GREEN

FU6

250V

1A

SCHEMATIC DIAGRAM -MODEL

730

SYSTEM

INTERCONNECTION

.......

'-AM-4---------<"JLP201

10

PHON0(2)

PHON0(1)

AUX(2)

AUX(1)

TAPE

IN(1I

TAPE

IN(2)

TAPE OUT(1

PHON0(2)

PHONO(I)

SW1E

AUX(2)

AUX(1)

TAPE IN(1)

TAPE

IN(2)

TAPE

OUT(1)

TAPE OUT(2)

FRONT ENO

3.7

LP25t

C253

5p

CO-HH4

L

CH

IN

C0-HH1

R

CH

IN

LP252

TC3

+B3

L201

270p

IC219

LP253

TCl

VCl

LP703

+B

LP701

OUT

LP702

-B

LP704

OUT

SW1C

SW7B

CONTOUR

-15

-

LP511

+B

LP508

L

CH

IN

LP504

LP509

-B

LP506

R

CH

IN

LP505

AM

OUT

C0-A2

+

X

ME1

FM

QUIETING

AM TUNING

CO-A3

LP512

OUT

!..P509

I

LP511

+B

LP510

,OUT

LP509

-B

+B1

CQ-A6

A1

L

CH

-B1

FM

STEREO

OUT

R

CH

FM

STEREO

QlJT

CO-A

A2

CO-A7

CO-A5

CO-A1

CO-A12

+B

LP511

LP503

~

LP6

C0-8

_co-sss

+B2

+B1

SP

SVTEM 1

C0-01

CO-B

L

CH

OUT

IN

LP502

~LP7

LP509

-B2

_CO-BB4

-B

CO-B4

-B1 A438

LOW

CUT HI CUT 330

½W)

SW10B SW6B

i°J2

HEADPHONE

LP511

_co-cc5

3~~rY,W)

co-cs

LP509 +B2

CO-Cl

CO-C6

R

CH

OUT

IN

SP

SYSTEM 2

100k

co-c

----:~2

CC4

-16-

SCHEMATIC

DIAGRAM -

MULTIVOLTAGE

-

MODEL

730

AM/FM

TUNER.IF, MPX

,,.,,0-----------------------------------------------------------1-----------,

CO-HH4

L

CH

IN

CO-HHl

R

CH

IN

..,

TO

FRONT

END

"''"

EQUALIZER

AMP

0701,

0702

2SA872(E)

C702

22/lOV

R704

220

R702 R706

TOOk TOOk

C701

22/10V

R703

220

R701

TOOk

c,

..

10/16V

0253

2SC460{CI

0703,

0704

0705,

0706

2SC1345(E) 2SC1345(E)

LP511

+B

LPSOS

L

CH

IN

LP701

LP504

L

CH

OUT

LP509

-B

+ LP506

R

CH

IN

LP704

LPSOS

R

CH

OUT

-

17-

TONE/

PRE

AMP

100k

I

lcso2

!0,061

I

I I

' '

BALANCE

VOLUME

i i

I I

I

VR501 /

100k

R214

""

D252~0254:

1N60P

CO-A2

CO-AJ

AM

OUT

METER

• OUT

X

0501·,0502

0503---

0508

2SA844(E) 2SC1345(E)

VR506

50k

LP512

L

CH

OUT

'

I )

I I

I I R540

I I 220k

I I LP509

I I

BA

0

SS '

TREBLE

I I

~

I

LP511

',

VR505 I

'50k

I

R517 I

6.Bk

LP510

R

CH

OUT

~--------------->-----~LP509

""

,,

R3S7

,oo

0304-.....0J14

2SC13351EJ

0501,

D502

0503,

D504

EOA01-20 SIB01-02

LP503-LP6

+B2

LP511

LP509

LPso2-LP7

D503

-82

LP511

LP509

POWER

CO-Bl

+

L

CH

C402

IN

100/l0V

CO-Cl

R

CH

C401

IN 100/lOV

0301,

0302

2SC133S(EI

AMP

0401

..........

0406

2SC1400(UA)

0411,

0412

2SD415(R)

D401~0406:

1S2076

18 -

""'

"

LOW

PASS

FILTER

'

0407,0408

2SD549(0)

0413,0414

2S8549(R)

""'

"

----<"1-;.------+-lf--6co-Ae

L

CH

FM

STEREO

OUT

f-+----;-<)

~-o---!------1---+---f>co-A9

fl.CH

R32I

4.7k

0409,

0410

2SC853(L)

0415,

0416

2SD415(R)

~~83

0318

2SA83&(El

0417,

0418

2S8541{SorR)

C0-85

CO-B4

0419,

0420

2SD388{SorR}

co- 5

~REC

out

CO-A7

+83

CO-AID

CO-All

0-Aa

_____,.CO-BBS

+B1

CO-B6

L

CH

OUT

_____.CO-B84

81

_____,..CO-CC5

+82

co-cs

R

CH

OUT

,,

-~·

SCHEMATIC DIAGRAM -MODEL

730

AM/FM

TUNER.IF,

MPX

,,,,,,A---------------------------------------------------------------------,

LP:251

AM

ANT

CO-HH4

L

CH

1N

CO-HHI

R

CH

IN

<BJ

TO

FR~J

EQUALIZER

AMP

0701.

0702

2SA872(EJ

A702

100k

C701

22/10V

+ R703

220

R701

100k

-0703.

0704

0705,

0706

2SC1345(EJ

+

""

10/16V

LP703

+B

LP701

L

CH

OUT

LP704

R

CH

OUT

LP511

+e

LP508

L

CH

IN

LP504

LP509

-B

LP506

A

CH

IN

LP505

-19-

TONE/PRE

AMP

I

R214

""

D252-D254:

1N60P

0501·,0502

0503-....

0508

2SA844(EJ

2SC1345(EJ

I

I '

~

I

C0-A2

AM OUT

•

X

R540-

CO-AJ

•TER

OUT

LP512

L

·CH

OUT

I I I 220k

I I I

~-----'-----'------+-~~--'----,;-------+-_;;;=----~LPS09

I

VOLUME

i

I

VR501

100k

I I

eAss

I

TREBLE

l I

\ I

I

',

VA505

I

' 50k I

R517 I

6.Bk

Q507

._,,.._..Nll'-.,__-'LP510

A

CH

OUT

c_

_

_,.,

____________

._

____

4LP509

'

""

(sw ""'

O.IM7

0304--..0314

2SC133S(El

D501.

0502

0503.

D504

EClA0l-20 SIB01-02

LP511

:l-__.-+iw,,.._~N\'-llol--!>LPS02

-

LP7

-B2

LP511

LP509

0301.

0302

2SC133S(El

POWER

AMP

0401-.....0406

2SC1400(UAJ

0411.0412

2S0415(RJ

CO-Cl

~~H--h'V'----.,-ff

R

CH

IN

D401 ~D406: 1S2076

-20-

LPF1

LOW PASS

FILTER

LOW

PASS

FILTER

0407.0408

2S0549(0J

,

0413,0414

2SB549(RJ

""

.,

C0-A6

L

CH

FM

STEREO

OUT

f----+----r-0

---o--!-----+-+--6co-;i,9

A CH

FM

""

4,7k

0409,

0410

2SC853(LJ

0415,

0416

2SD415(RJ

STEREO

OUT

CO-A7

+BJ

c_

________

o.,..,

0417,

0418

2SB541(SorR)

0419,

0420

2SD388(SorR)

..._,__.,

___

---0co-cs

A

CH

OUT

SCHEMATIC

DIAGRAM

-MULTIVOLTAGE -MODEL

730

SYSTEM

INTERCONNECTION

PHONO(2)

PHONO(1)

AUX(2)

AUX.Pl

TAPE

IN(1)

TAPE

IN(2)

PHONO(l)

AUX(2)

AUX(1)

TAPE

IN(1)

TAPE

IN(2)

FM

AM JOOOHM

SW1D

SW1E

R202

18k

r-'IMN'-+--------OLP201

CO-HH4

L

CH

IN

CO-HHl

R

CH

IN

LP252

I

C219

270p

+B3

LP253 TC1

vc,

LP7030------,,------------0LP511

+B

LP701 <..>---+t+-.,_~

OUT

~-----0LP508

L

CH

IN

LP504

LP702

U-~-+t--+-----,H-+-+-+==-----0

LP509

-B

LP704

0---+t---<1-'

OUT

SW1C

.,_

_____

OLP506

SW7B

CONTOUR

R

CH

IN

LP505

-

21

-

Al/!

OUT

C0-A2

ME1

FM

QUIETING

AM TUNING

CO-A3

CO-A6

L

CH

FM

STEREO

OUT

CO-AlO

CO-A11

CO-AB

A1

ON

SW11D

LP551

....

,

6 5 4

._

___________________________________

.....,

MONO

+B

LP511

--+-----+--UCO-Bl

L

CH

IN

LP509

Q----+------l--,--+------+----Q

LP502

~LP7

-B2

LP510u-----

0UT

LP509

-B

'---+-oco-c,

R

CH

IN

LP5090----------------+-------'

-B

-

22

-

D1

S4VB20

CO-B

CO-B4

co-c

_c0-8B5

+B1

_co-eB4

-B1

_co-cc5

+B2

_co-cc4

-B2

FU7

FUSE

2A;

22D/240V

4A:

100/120V

SP

SYTEM 1

~~1w)

i°J2

HEADPHONE

3~ir½w)

SP

SYSTEM 2

SCHEMATIC

NOTES

AND

VOLTAGES

NOTES:

Unless

otherwise specified

1.

Resistors

are

1/4 watt. Values

are

in ohms, K =1000, M = 1000K.

2.

Capacitor

values

are

in microfarads, UF, P= UUF.

VOLTAGE

CHART

AC120V Volume Control at Minimum

No

Signal Tone Control at Mechanical Center

Chassis

Ground

+B1, +B2 ............................... +39.78V

-B

1,

-B2

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

-39.

78V

+83

........................................ +12.74V

IC201

1...............................

2...............................

3...............................

4...............................

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

IC202

1.·····.........................

2...............................

3...............................

4...............................

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

1.43V

1.44V

ov

9.13V

9.85V

1.44V

ov

9.39V

10.12V

IC203

1···········....................

2...............................

3...............................

4...............................

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

IC204

1...............................

2...............................

3...............................

4...............................

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

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

7...............................

TRANSISTOR

ELEMENTS

VOLTAGE

CHART

base

emitter collector

06

13.42V 12.74V 20.58V

0201 1.53V 1.03V 11.38V

0202

11.38V 12.00V 5.88V

0301,302 1.83V 1.21V 5.05V

0304

0.57V 0.012V 1.18V

0305

1.18V 0.58V 6.74V

0306

0.58V 0.011 V 1.41V

0307

1.41

V 0.82V 12.64V

0308

2.71

V 2.04V 12.74V

0309

1.16V

0.57V

12.64V

0310

1.23V 0.55V 0.56V (mute OFF)

0311 0.56V 0.55V 12.14V (mute OFF)

0312

0.87V

av

0.05V (mute OFF)

0313

1.34V 0.67V

0.68V

(mute

OFF)

0314

0.68V 0.67V 12.67V (mute OFF)

0316

9.90V 10.59V 7.93V (mute OFF)

0315

0.60V

av

0.01 V (mute OFF)

0251 0.74V 0.11 V 11.28V

0252

0.87V 0.36V 11.78V

0253

1.89V 1.38V 11.01 V

0254

1.19V 0.52V 11.63V

0255

2.11V 1.42V 6.09V

0256

3.68V 3.12V 8.94V

-23 -

Equalizer

Amp

+B

............... +14.87V

Equalizer

Amp

-B

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

-14.87V

Tone/Pre/Filter

+B

.............. +18.12V

Tone/Pre/Filter

-B

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

-18.12V

1.44V

ov

9.01V

10.68V

2.03V

9.11V

av

10.11 V

2.04V

2.03V

IC301

1...............................

2...............................

3...............................

4...............................

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

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

7...............................

8...............................

9...............................

10...............................

11

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

12...............................

13...............................

14......................•........

11.93V

3.04V

5.08V

8.49V

8.43V

12.66V

ov

0.08V

2.27V

1.53V

2.15V

2.32V

2.31V

3.17V

Function Selector Switch to phono-1 Position

base

emitter collector

0401,402

-0.052V

-0.60V

38.30V

0403,404

-0.067V

-0.60V

38.03V

0405,406

-37.55V -38.25V

-0.60V

0407,408

38.27V 38.73V 0.61V

0409,410

0.013V

-0.63V

0.61V

0411,412

-38.25V -38.72V

-0.63V

0413,414

-0.61V

-0.03V

-39.23V

0415,416

0.58V

0.02V

39.20V

0417,418

39.23V 39.78V 0.020V

0419,420

-39.23V -39.78V

-0.023V

0501,502

0.008V 0.54V

-17.42V

0503,504

-17.42V -18.12V

1.29V

0505,506

0.61V

0.05V

5.44-V

0507,508

5.44V 4.80V 18.12V

0509,510

-0.09V

-0.48V

16.90V

0511,512

16.90V 17.49V

-0.48V

0701,702

0.55V 0.007V

-10.71V

0703,704

-10.71V -11.39V

1.14V

0705,706

-0.60V

-1.24V

14.78V

TONE/PREAMP

PC

BOARD

CIRCUIT REF.

H/K

PART NO.

00132097

VARIABLE RESISTOR

VR501, 502 22031320

VR503, 504 22031319

VR505-508 22031321

CAPACITOR, ELECTROLYTIC

C503,

504,515,516

31831322

C505, 506 31832152

C517, 518 31818932

C531-534 31832153

DIODE

D501, 502

D503, 504

TRANSISTOR

0501, 502

0503-508

42032154*

41631295*

43031312*

43029483*

-

24-

DESCRIPTION

P.C.

Board Assy., Tone/Preamp

1

0OK

Ohm, Balance Control

100K Ohm, Volume Control

50K Ohm,

Bass

and

Treble Control

22UF, 10V

220UF, 6.3V

100UF, 10V

1000UF, 25V

Zener, EOA01-02 20V

±1

V

SIB01-02

PNP,

2SA844(E)

NPN, 2SC1345(E)

OUTPUT

INPUT

JACKS

PC

BOARD

VIEWED FROM CIRCUIT SIDE

1234567

FUNCTION

SELECTOR

SWITCH

PC

BOARD

VIEWED FROM

CIRCUIT SIDE

am

A SW1A

fm®

aux

2@

\

aux1

©

phono

2®

®

phono1

1 2 3 4 5 6 7 8 9 10

11

12 13 14 15 16

-25-

CIRCUIT REF.

sw,

H/K

PART NO.

00132104

65432171

H/K PART

NO.

00132105

24032172

DESCRIPTION

P.C.

Board Assy.,

Output/Input

Jacks

16

RCA Jack

DESCRIPTION

P.C.

Board Assy., Function Selector

Switch, Rotary Function Selector

OUTPUT

INPUT

JACKS

PC

BOARD

MULTIVOLTAGE

VIEWED FROM

CIRCUIT

SIDE

-

26-

AM/FM

TUNER,

IF,

MPX

PC

BOARD

CIRCUIT REF.

H/K

PART NO. DESCRIPTION

00132094

P.C.

Board

Assy.,

AM/FM

Tuner, IF,

MPX

VARIABLE RESISTOR

VR301, 351, 352 23530554 4.7K Ohm

VR302, 353 23532130 220 Ohm

DIODE

D201, 202, 251, 41039552* 1S2076

351,352,354,355

D252, 253, 254 41029290* 1N60P

VARISTOR

D353 41632133* VD1211

TRANSISTOR

0201,

256,301,302,

43030569* NPN, 2SC1335(

E)

304-315

0202

43031312*

PNP,

2SA844(E)

0251, 253, 254, 43029472* NPN, 2SC460(C)

255

0252

43029471 * NPN,

2SC461

(B)

0316

43032132*

PNP,

2SA836(A)

-

27-

CIRCUIT REF.

H/K

PART NO.

INTEGRATED CIRCUIT

IC201, 202, 203 43131313*

IC204 43131314*

IC301

43132131*

COIL

L251

12031316

L253, 351, 353 12032144

TRANSFORMER

T201 11031318

T251

11032146

T253, 254 11030557

MISCELLANEOUS

REL1

13032134

LPF1

12032135

T252 12032136

CF201, 202 12032137

AM/FM

TUNER,

IF,

MPX

PC

BOARD-MULTIVOLTAGE

DESCRIPTION

BA401,

FM

IF Amp

BA402, FM IF Amp

HA1156W,

FM

MPX

AM

OSC

3.3UH

FM

Discriminator

AM

RF

AM IF

DC

Relay

Low

Pass

Filter

Ceramic Filter, AM IF

Ceramic Filter,

FM

IF

CIRCUIT REF.

MULTIVOLTAGE

SW301

-

28-

H/K

PART NO. DESCRIPTION

24531335 Switch, Slide,

De-emphasis

MODE/CONTROL

SWITCH A

PC

BOARD

B

H

B

8

B

0 0

SW4

SPEAKER 1

Reh

Leh

to

SP

1

CIRCUIT REF.

SW4,

5, 6, 7

DIAL LIGHT

PC

BOARD

VIEWED

FROM

CIRCUIT

SIDE

CIRCUIT REF.

LAMP

PL2-7

PL8

H/K PART NO.

00132098

25032155

H/K PART NO.

00132103

46532169*

46531326*

-

29-

os

so.

C525~

~C526

R549 R550

DESCRIPTION

P.C.

Board Assy.,

Mode/Control Switch A

Switch Pushbutton

Contour/Hi Cut/Tape Mon 1/Spkr 1

DESCRIPTION

P.C.

Board Assy., Dial

Lamps

Dial

and

Meter Lamp, 8V, 300MA

Stereo Indicator Lamp,

6.3V,

40MA

SW

7

CONTOUR

MODE/

CONTROL

SWITCH

B

PC

BOARD

SW9

SW

10

SW8

SPEAKER 2 TAPE

MONITOR 2

LOW

CUT

C 8

81

swg}:

8

·~;W8A

8

83

38

o.

8

84

.

48

LP560 8

9;W8B

SW9:

8

Leh

AMP

8

86

68

OUT

0

LP559

Reh

0

O·

Reh

Leh

to

SP

2 0

E

CIRCUIT REF.

H/K

PART NO.

00132099

CAPACITOR, ELECTROLYTIC

C529, 530 31818932

TRANSISTOR

0509, 510

0511,512

43029483*

43032132*

SWITCH PUSHBUTTON

SW8,

9,

10,

11

23532156

-30-

Reh

Leh

0 0 0 0 0

PRE AMP

-B

+B

LP551

OUT

-18.12V+1B.12V

DESCRIPTION

P.C.

Board Assy.,

Mode/Control Switch B

100UF, 10V

NPN

2SC1345(E)

PNP

2SA836(E)

Mono/Low Cut/Tape Mon 2/Spkr 2

SW

11

MONO

EQUALIZER

AMP

PC

BOARD

LP701 LP702

0 0

Leh

OUT

-B

~-14.87V

~

R734

220

~

Q706~

LP703 LP704

0 0

+B

Reh

OUT

0

+14.87V~

E~

R733

220

~

~0705

~

C717

~-

0.1/35V~

(eC707•)

0.012

•

0704

__;,..=---,,6

14

d':;:-:;-:::;::::~~

~0703

R

72

___:_~:v

C

7 19 100

0702

'-----=---"

'-----=--"

;g:701

C704 C703

47p

r--~--...

47p

R712 R711

470

R704

220

R703

220

(1,

~~

L ch

l~Rch

IN

~

CO-HH

CIRCUIT REF.

H/K

PART NO.

00132096 DESCRIPTION

CAPACITOR, ELECTROLYTIC

C701, 702 31832147

C709, 710 31818932

C713, 714 31832148

C717, 718 30731310

C719, 720 31832149

C721, 722 31832150

TRANSISTOR

0701, 702

0703-706 43032151*

43029483*

-

31

-

P.C.

Board Assy., Equalizer

Amp

22UF, 10V

100UF, 10V

33UF, 10V

0.1

UF, 35V Tantalum

1UF, 50V

220UF, 25V

PNP

2SA872(E)

NPN

2SC1345(E)

MAIN

RECTIFIER

PC

BOARD

0

CIRCUIT REF. H/K PART NO.

00132100

CAPACITOR, ELECTROLYTIC

C5,

6,

9,

10 31832157

DIODE

D1, 2

FUSE HOLDER

42132159*

65432158

SUB

RECTIFIER

PC

BOARD

0

CIRCUIT REF. H/K PART NO.

00132101

CAPACITOR, ELECTROLYTIC

C1,

3,

4 31832161

C2

31828611

DIODE

D3,4

D5

TRANSISTOR

06

41631295*

42029566*

43032160*

-

32-

DESCRIPTION

P.C.

Board Assy., Main Rectifier

4700UF, 50V

Bridge, Silicon, S4VB20

Holder

for

FU1,

2,

3, 4

DESCRIPTION

P.C.

Board Assy.,

Sub

Rectifier

220UF,

16V

470UF,

16V

SIB01-02

Zener EOA01-02, 13.2V ±0.

7V

NPN

2SC1162(C)

0

c::

...,

Harman Kardon 730 User manual

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