Harman kardon 75+ User manual

The Harman-Kardon

Model

75+

AM/Stereo

FM

Multichannel Receiver·

Technical Manual

harman/kardon

ALIGNMENT

PROCEDURES

Step

1

2

3

4

5

6

7

8

9

10

11

12

13

FM

IF

& RF

ALIGNMENT

INSTRUMENTS: FM S.S.G., modulator

with

400Hz at 100%,

V.T.V.M.,

Oscilloscope, and Distortion Meter.

NOTE: Set TONE control

to

flat

response (or mechanical center

of

both

of

BASS control and TREBLE control)

Set

FUNCTION

selector

to

FM.

SIGNAL

SOURCE

OUTPUT

METER

ADJUST

FOR

Check mechanical zero center

of

TUNING

indicator,

M101

at

POWER

switch

OFF.

Adjust

it

if

necessary.

None

(FM

ANTENNA

TUNING

indicator,

Zero

or

center

indication

ON

terminals

opened).

Tuning

connect

osci

11

oscope TOP adjuster

of

T101

TUNING

indicator

M101

control

at

no signal. and

V.T.V.M.

to

(or

RAT

CAN)

observing noise

output

with

TAPE

OUT.

output

meter._

Same

as

above. Same

as

above.

Bottom

adjuster

of

T101.

Maximum

noise

output

on

V.T.V.M.

Same

as

above. Same

as

above. TOP and

bottom

ad- Same

as

above.

justers

of

'IF'

in

FRONT-END

Connect

SSG

to

FM

ANT

terminal,

with

no

signal Same

as

above. Readjust TOP adjuster

Zero

or

center

indication

ON

(or

SSG

OFF).

Tuning

of

T101.

TUNING

indicator,

M101.

control

at

no

signal.

Set

SSG

output

to

88MHz,

Same

as

above.

LO,

LR

and

LA

in

Maximum

noise

output

on

Tune

radio

to

88MHz

of

FRONT-END.

V.T.V.M.

SSG.

Set

SSG

output

to

106M

Hz, Same

as

above.

TCO,

TCR

and

TCA

in Same

as

above.

and

tune

radio

to

106MHz.

FRONT-END.

Repeat step 6 and 7

for

best sensitivity.

Use

very weak signals

of

Same

as

above.

LA

and

LR.

Zero

or

center

indication

of

88MHz.

TUNING

indicator

M101.

Tune

radio

to

88MHz.

Use

very weak signals

of

Same

as

above.

TCA

and

TOR.

Same

as

above.

106MHz.

Tune

radio

to

106MHz.

Repeat step 3

through

5

for

best setting

under

SSG

connected

but

no

signal.

Use

98MHz,

1

mV

signals

Minimum

harmonic

distortion

from

SSG

modulated

with

Connect

distortion

Bottom

adjuster

of

on

distortion

meter keeping

400Hz

at

100%.

Tune

radio meter,

V.T.V.M.

and

T101.

noise

output

to

3V

on

to

98MHz.

(Note:

If

oscilloscope

to

V.T.V.M.

(adjust

VOLUME

another

signal exists,

SPEAKER

out.

CONTROL

VR301

through

shift

to

quiet

point)

VR601,

if

necessary).

Observe

output

waveform

with

oscilloscope

at

S/N

=

20

to

30dB.

Observed

waveform

will

be

(1

), (2)

or

(3),

below:

(1)

1\;No,se

,,,

\ (3) t

MODU-

LATING

FREQ.

400Hz.

Same

as

above. Same

as

above.

UNACCEPTABLE

ACCEPTABLE

Wave

form

(1) and (2)

will

result

from

misalignment.

(1)

To

correct,

carefully

adjust

two

adjusters

of

IF

on

the

FRONT-END

and

bottom

adjuster

of

T101.

(2) Check

TUNING

meter

zero center again

under

no

signals

of

SSG.

If

necessary, adjust

the

zero

point

with

TOP

adjuster

of

T101.

(3)

For

ANTENNA

input

of

1mV

from

SSG,

distortion

shall

be

adjusted

with

bottom

adjuster

of

T101,

if,

necessary.

-2-

AM

ALIGNMENT

PROCEDURE

INSTRUMENTS: SSG,

modulated

with

400Hz

at

30%, V.T.V.M.,

AM

IF Sweep Generator, and Oscilloscope.

NOTE:

Set

FUNCTION selector

to

AM.

Connect

signal source

to

a loop placed

to

radiate signals

into

AM

ANT

LOOP STICK.

SIGNAL

SOURCE

CONNECT

OUTPUT

Step

OUTPUT

METER

TO

DIAL

SETTING

ADJUST ADJUST

FOR

1

455kHz

of

sweep

V.T.V.M.

& oscillo-

Quiet

point

near

T162

(Black)

Maximum

and

-generator scope

to

TAPE

OUT

1600kHz

symmetrical

2

T161,

input

side

pattern

on

SCOPE

~

3

T161,

output

side

4 Repeat step 1

through

3

for

best

sensitivity

and

symmetrical

pattern

on oscilloscope.

5

525kHz

of

S.S.G.

V.T.V.M.

to

TAPE

Gang

fully

closed L

162

(Black)

OUT

1 and

distortion

meter

together

with

Maximum

output

6

1700kHz

of

S.S.G. oscilloscope

to

Gang

fully

opened

AM

oscillator

speaker

out

trimmer

7 Repeat step 5 and 6

for

best

sensitivity

8

600kHz

of

S.S.G.

600kHz

AM

ANT

LOOP

Same

as

above

STICK

Same

as

above

9

1400kHz

of

S.S.G.

1400kHz

AM

ANT

trimmer

10

Repeat step 8 and 9

for

best

sensitivity.

SIDE CHAIN

ALIGNMENT

FOR

MUTING

& STEREO THRESHOLD

Step

SIGNAL

SOURCE

OUTPUT

METER

11

ADJUST

FOR

14

Repeat 1, 2 and 3

for

optimum

setting.

15

STEREO

THRESHOLD

1.50V

on DC

voltmeter

VR012.

~

Connect

SSG

to

FM

ANT

D.C.

Voltmeter

16

terminal.

from

ground

to

L101 and SSG

output.

Maximum

on DC

voltmeter;

Quiet

point

near

98MHz.

R141.

keep DC voltage

to

1.50V

SSG

set

on

CW

by

adjusting SSG

output.

TUNING

indicator,

M101

must

indicate

zero center

all times.

17

Same

as

above,

but

set

MUTING

ADJUSTER,

Finally,

audio

output

must

SSG

output

to

26dB.

VR

101.

drop

by

3dB

with

FM

(or

20

µV)

MUTING

switch

ON.

18

Check again zero center on

TUNING

INDICATOR,

M101

with

no

signal.

-3-

MPX

ALIGNMENT

PROCEDURE

Step

1

-2

-3

-4

5

6

7

8

9

10

11

INSTRUMENTS: S.S.G.,

Stereo

Generator,

V.T.V.M., Oscilloscope, Oscilloscope

of

low

input

capacitance,

and

Distortion Meter

L + R = 90%,

Pl

LOT=

9%,

modulation

NOTE:

Set

TONE

control

to

flat response (or mechanical

center

of

both

of

BASS

control

and

TREBLE

control).

Set

FUNCTION

selector

to

FM

STEREO.

SIGNAL

SOURCE

OUTPUT

METER

ADJUST

FOR

L102

For

maximum

on

scope

connected

to

T.P.

at

Connect

SSG

modulated

Connect

low

input

L103

minimum

resistance

(or

with

MPX

Generator

to

capacitance oscilloscope

extreme

counter

clock-

FM

ANT

terminals.

to

TEST

POINT

TP.

L104

wise)

of

VR101

and

Output

level:

1mV

Connect

oscilloscope

maximum

resistance

(or

Pilot

level: 6%

to

TAPE

OUT

of

extreme

clockwise

of

both

channels.

VR102.

VR101

Adjust

VR101

until

STEREO

INDICATION

lights.

The

INDICATION

will

go

out

for

the

Pl

LOT

level

of

lower

than

6%.

Same

as

above,

but

PILOT

LEVEL:

9%,

L102

For

maximum

stereo

only

RIGHT

channel separation.

is

modulated

with

main

signal

of

1

kHz.

Change

main

signal

For

maximum

stereo

modulation

to

LEFT

L102

separation.

channel.

Repeat step 5

and

6, and

if

unbalance

of

stereo separation between

LEFT

and

RIGHT

exists,

correct

it

with

VR102.

Check

PILOT

level

that

STEREO

INDICATION

lights

at

5.5%

to

6.5%

of

PILOT

LEVEL

andthat

the

INDICATION

does

not

light

at

1%

of

P.L.

Return

Pl

LOT

LEVEL

to

9% and

check

stereo separation

at

1

00Hz

and

10kHz.

At

32dB

(40µV)

of

SSG

output,

adjust

STEREO

THRESHOLD,

VR012

for

STEREO

INDICATION

ON.

Remove oscilloscope

from

test

point,

TP and

adjust

again L

104

for

best stereo separation.

POWER AMP.

UNIT

(Alignment of Idle current of output

transistors).

INSTRUMENTS: High sensitivity D.C.

voltmeter

or

synchroscope.

NOTE:

Set

VOLUME

control

to

minimum

output.

No signal.

Step

CONNECT

M.S.

VOLTMETER

TO

ADJUST

FOR

1 Across

emitter

of

0347

and

collector

of

0348.

VR341

5.5mV

on

voltmeter.

2 Across

emitter

of

0447

and

collector

of

0448.

VR441

Same

as

above.

3 Across

emitter

of

0547

and

collector

of

0548.

VR541

Same

as

above.

4 Across

emitter

of

0647

and

collector

of

0648.

VR641

Same

as

above.

-4-

SQ

UNIT

INSTRUMENTS: AF Oscillator, 2-V.T.V.M.,

and

Oscilloscope

NOTE:

Set

MODE selector

to

ENHANCE

STEREO.

Keep AF oscillator

output

to

1.0V

at

1000Hz

during alignment.

Step

SIGNAL

SOURCE

OUTPUT

METER

ADJUST ADJUST

FOR

1

Connect

AFO

to

LT.

Connect

scope

and

VR201 1.0V

on

V.T.V.M.

to

LF

2

Same

as above.

Connect

scope

and

VR202

1.0Von

V.T.V.M.

to

LB

3

Connect

AFO

to

RT

Connect

scope

and

VR203

1.0V

on

V.T.V.M.

to

RF

4

Same

as above.

Connect

scope

and

VR204

1.0V

on

V.T.V.M.

to

RB

DIAL

LAMP

BOARD

-

TOP

~

~~

~

,,---

!-----------------------------------------

PLOIS

PL

014

I 1 1 I

11

,,.

oc

DIAL

LAMP

BOARD

-

BOTTOM

-5-

PREAMP

BOARD-TOP

PREAMP

BOARD-BOTTOM

----

- +

C702

IOOuF

35V

- +

........

C511

IOuF

25V

un---

I z 3 4 5 6 7 8 9

10

II

12 13 14

10

16 17

18

19

20

21

22

-~

-6-

- +

•·U-•

C611

IOuF

2W

POWER

AMP

BOARD

-

TOP

Q347

@447)

547

Q647

rn:c'

RED

GRN

BLU

To:

PCB(INV.ANP)

VR341

rR441)

VR541

VR641 TO

:51

l(STEIIEO._.

QUAD

RED

TO:"e"

GRN

BLU

TO:FUSE HOLDER

(Sl'K"S)

POWER

AMP

BOARD

-

BOTTOM

,~~=:

mii

,g~~:1

gm:~

f:~1)

Q346

~

C341

~

--

~

646

g~::)

0347 R341,R441,R541,R641

2.7K

@~:l\.

~

,Q

646

(:~~).

g;:~

R342,R442,R542,R642

33K

cs

41

.i!-

C C

..::.i

.:':-.

j , @ , R557 °

64

7

R343

R443

R543

R643

390

R641

✓

+

C343 R657

""-

V

(

R541

0341 034 @ (C443~R345 \

©.

~

I/

0

R344

R444

R544,R644

6.8K

m:)f

~~:'®8i:~)

~i~

R;:~)

R

347

CR

34~

~

R345

R445,R545

R645

180

l

\,

f

Q641/

\0642

!

R645

447)

(CR44

...,.~

/4.

R346

,R446

R546

R646

3.9K

- + C345

+~

R547

CR

54

.--

R347 R447

-4

R647

C352 T

._,,._.

~445,-

R647

R355

CR642

00'

• •

n~

7,

5.6K

(C452) •C342 C344 C545 (R455)

(ID

R348

R448

R548

R648

33K

C552

I

(g;:~)~44)

C645 R356

:~;

O

R349,

R449

,R549

,R649

3.3K

cs

52 j C642 c

544

(R

VR~

R350

R4!!0

R550

R650

180

C64

4 R556

~VR541

._

___

_.

R342

VR441)

R351

R451

R551

R651

100-

1

/2

(R

442

)

---..

, fr

CR

344

VR341

R352,

R452,

R552,R652

Io-

I

R542

JUMPER

~CR444

t

f-=-cc==c½===="==~-c'-=--1

R642!

08\l!COPPER

RR3

44

49

9 ~3

44

48

C

349

~

CR544

R353,

R453,

R553,R653

Q27-3

R3

5B

(R549

R54g\

(C44!!'J

1

R354,

R454

, R554,R6

54

IO-

I

(R458) R649/

R64el

~::1!

0344

l

R355

R455

11555

R655

0.21-3

R558

(Q444)

C346

Q348

R356

R456

R556,1(956

100-

/2

RB5B

L341

~

544

c

445

0448

R357,

R457

R557,

R657

3-3-

Y2

41

0644

C546

Q54

8

1

C64

Q648

R358,R458,

R558,R658

27

/2

R353

oe-

,--.;

r2

C341,

C441,

C541,

C64

I

220JJF-16V

(

glgg!

(~;g~)

(g:m;

-1

~

o

C342,C442,C542,C642

70P

C650

-W,,--..

Q345

R6531

CR543

✓

:::,-'

C343

C443,

C543,C643

47uF-35V

(

0445)

CRs

43

,C/

/4

C344,C444,C544,C644

220uF-16V

----,1--e

(~ii)

!Ri~

3

wg:~)

g~:g

R352 1

k:=WJ®

C345,

C445,C545,C645

47!JF-35V

R654 R543

0543

QJ452

C346

,C446,C546

,C646

ODl,iF

(c

g~5g5:1)

fi

R~

3 6~

•@

l~~

~ijl)

<,347,

C447,

C547

C647

150P

,!+

V ..,.,

<-348,

C448,

C548

,C648

47uF-35V

C651

~

+

lc

347

~~:

IG349,C449,C549,C649

0.001,iF

(

g~:)

R

tgm)

C350,C4~

,Ci!50,C650

0.1.uF

CC564488

(~65%8

-\cs47

C351,

C451,

C551,

C651

0,1

,iF

R65cl/

C352

C452

,C552

C652

0.1,iF

L341,

L44

I,

L541

L641

L6

•F

VR341, VR441,

V_l,VIH41

4.7K

0341+0348

CR341.CR343

C341.C352

R341.R357

L341,

VR341

LF(LEFT

FRONT)

044,.Q448

,

CR441•CR443

C441~

..

52

IM4-«17

L441

V"441.

L9'1.£FT

•ACK)

Qll41-0,-t8

,C~i

♦

CR543

,C,-tl•C5'52

R54~57

L541

VR541

-..iTl'-TI

0841•08-tl

CIIIS41•CR643

C84i+C852

R841-57,

L.41

VIH41

"•MlettT

IIACKI

--

7 -

AM-FM

TUNER

BOARD-TOP

TO:

S4(FM-MUTING)--

OIi~

Cf3!5 C/34

~~

2

~Q~

Rl40R

.0108@

~<C3'C!)Rl31

a,

Rl299

~

-Rl20

1~

• • •

-.

c11;--4tfi

LIOI

0

\S

3

<CJ>

lit,E

f J

C~31

....

Rl38

,a.

u • •

<CJ>

r,

106Q

Rl3'6

.!5

<C3>

.137

(;-~~

l ......

Rl34

B

··Ee

.;'1· 7c.a.

R133f

5•aw

,r--,.

~'jg,

Cl2J

~

t,

~Cll7

• • •

v1ob20CY

e12s

C:;:>c1rs

QIO~

Cl2oJDQI:

•Cl27

~'Z!J~

Rl!59

029

•

...

Cl24~

~ ~

-

Rl24

Rl2!5

RII

RIIS

r1!'0104 (tJ QIOI

~

R12a...e

RI;·~

._aus

TO:FUNCTION

SW.S1-A,8,C,D

Cl86

TO:FUNCTION

SW.

S1-E

4F

(AM-METER)

• •

Cll9

------

----------------

----

/r-::..==.;::;=

=-=--=-----_-::,_-c:_-=-

-=-----=----=-

..=-_-_--:::,.-_

I"----------------------

111

i

II

I

II

,l{

,tt

'

CHASSIS

WHT

GRN

YEL

LK

LOOP

STICK

VOLUME CONTROL BOARD -

TOP

VOLUME CONTROL

BOARD -BOTTOM

TO:

SB (CONTOUR)

TO '

SB

(CONTOUR )

TO:

SB (CONTOUR)

TO:

SB

(CONTOUR)

T o:pcB(CONNECTOl!D-I5,•

BRN/BLU

-..:::::;::=:;:::::::::::1----

TQ:

S2

• B

½(MODE•

SW)

0

TO:

PCB(CONNECTORllf-1I,

12

ORG/BLU

-::::;:~~:'.:'.'.:'.:'.:'.'.:'.'.::r--

To:s2-A2tz(MODE·SW)

-8-

~OJ.

VR

601

~~-r

--->M-----

C60I

0.22pF

t

-i-'~IOV

,·

AM-FM

TUNER BOARD -BOTTOM

"

z

<(

"'

z

I

Rl31

Cl22

Cl23

Rl32

Rl20

JOO

~I~

~~

~

Rll

91

!OK

:-

Rl30

IK

Rl29

100

-1\,\.

,r

.,.,._

~

r-----7

Cll8

0.01).JF

~

68

1

~•1LIOI

__,,_.. @

QI03

: :

CRl02

-

Rl28

15K 127 : :

0108

8~11JF

Cl35

,!)

Cl3211·1

-1

~~,

o.o,.uF1 © r

+.

+.v

.·

0110

Rl38

C;.74

Rl40

IK

o'\,\o

~139i

~K

e

C•

fl

3.3K

..

"-U'.7

CRI0I

.¥,

..y,,.5.6K

~-----J

Cll7o---M---o

Cl21

0.0IJ.!F

~0.0liJ.{F

o.oij.JF--H_.

Ri'gg

~

Gli00.01.UF

i~

--o-7

;~

3:

·c116

o.rnuF--u-o

R117'f

o--i,-..

Y101

L

---"

•

RI

18-'v\o

.W30

-"ho

-¥,.

o--!>--Cl24

Rl

37

Cl31

0.0IUF

i

--,,-.

QQl09

470

__,,_!

135

l3K,136

Q

5.6K

~

Rl

25

Rl24

500P

QI0I

l.2K~~

120

'.fr3>QI04

B C ® @

,½>

Ql02

Rll6

.¥,;,

'1J·

6K "'Ii,,

.,,1,,.R\rlK

.

56K

Cll5

O.0IJ.JF

Rl23

Cl

19

E

o--1

,__

68

K

---,

,__

0.OJJ.lf

Rll4

RI03

Rl34

IK

Cl26

IK~QI06

o'\,\o

0.01

µF

"fl,

C

It

QIOS Cl29

oCJfJFl

(95~1

+1

~0107

Mo

r© r

~cf

.l.LF

-c73o·¥'

RI

58

'·.

Cl28 16V

I0UF

rt·

15K

Q0IJJF

76V

~K JK t \

~RI07

Rl93

~

FJ02 Rl21

IK

TIO!

1c,so

JOO

~

r,

1

IK

_

1

Fio,

c,

03

,·,

c1051c1s1

ao

7 c6

98F

c15sj

7 I

33PF

CJ02

~6;:1c1010.01r:•:

IC

102°-~0.0JJ.!F1c1030.0IJ.H"o.

4 I

331PF:~:

200PFI

c:-~rY'

1

:.;

14-,..-y,

J;

• 1

;:011

13u

1 I

:cf'

0f

~

t-l~

r

:-

h.>-J.2r

J.

I3 r

~

r r I : :!

*cR,o3

10

RI02,r

CI04

0.0IUF

~

CI06.Q.QJJ.!F

IC

I0

4

CI09

: 1

CJ0I o¥,;.

.W,,.

JK

-W,,.

-'Wlt4 o'W\,-

00~/..lfL

____

J •

200P"1

Rl92

Rl91

RI04

'.Rl05

RIOS RIOS

RI09

150K

IK

'

33

IK

47

-~

22

RIO!

Rll2

J.

~

RII0

c,so

i'it'B,-c,

38

22

68

~

-. -.

,.

2K

Rl94~

•-H--

Rl48

LI05

4.7µF/J6V

\0.05UF

Cl39

CIII

RIii

22

-.

~'81'1.iF

-~

;,--,,

c,/jgpf

2c~d8PF

~

1

,ooooPfoo,e.,_..

"2K

c113

I 1

......

~

1

......

C.158--,,-.

~~22).jf

Cl

55

Rl

49

¾

1Cl48t

.rY"-)

4

Rl42

000!~

RISS 16V

47Q-4'1sy!0K

'T'OCJOI

' ,

,----7

2·2K -

r-----,

56K

•

---

·.uF

'---

✓

1 1

,.,,,,..

",

1 1 R15ro.01w ·

•-11--

LI06

CJ52 1

LI04,

1

~70~"

LI03

1.

.W,,,.

1-CJ56

~ 1

--

,

470PF

I I f I I

(YYY'\

1

Rl56

5.6K

l+

_[Q!!E

R:5~'f

1Qc6iv

\ l :

~:

\ j

:,

' •:

CJ!0-~00IJ.,F

16V

Rl59

).IF\

°'--v"

) r 1

- - -

··

-

_J

VRJ0I

··

-

____

_J

Cll4

• ;12

"'Iv-

, 1

Cl49

.!Q1iE.

•-··-··--II--

···

·-

"Vii"

Cl50

Rl46'-'

C/44

o--1.il'V

22UP

-

Cl65

Rl61 Rl51 IO.UF

~l~

330

.lQfil

-,0JJF

IC

105

CJ36

IGV

~1g~F

i.gfuF

0.04){

j6K

330

!~6V

RJ~i

!

1-16V

Cl~,_j6V

47!JE1-

Rll3

~

.........

....;t--o

1

~

'\"

1

J.

r+

"'NY-

f

J+

c,4'~

Rl44

16V

I+

•-l~OK

...........

,--3--[-~

r

Rl63

rCJ61'"wQ'ge

V__Rl_0,2

~Qllb

:14iio2

f~39K

,J.J.9['2_,

Cll2

CJ63 : ,

RJ64~,K

i;J

o.o4JJF

/~

0

~f.147

' i 1 I

10

: :

o.o'fF

RJ41

450PF,

: IK I

,2.2K

I 9 6 I I

:-'

K

I

It

J.

-V,,. \ /

J.

0V,,

8 7 : :

'I

~

L----~

..

'\°

Rl 50

•-

-

✓

'\"

R/45

Cl41 L J C/37

Ll62

Ql61

Rl62

Rl52

470K

0021JF

"

---

--

IOOOOP

1

.Ql62

RIBB

47~;:_I,(

CJ79

,-...

Rl83

CJ66

~

Rl67

TISI

IK

Rl7068K

~

><

RJ761~-----.POI

CRl64

Cl80

oi

~47K

0·

02

/..l"l'tj)j

IK

:~---t--1--J-

-[-7

$oui

~~

~¾

~c

~

i

TI

[ i

rf~

00

r~~~~~

~

~I~~

""tv-~

68

J

CRl61

:

',.

I : a:__,~

'J;)

1:I3

1

CRl62

,,:

o'C:-.:,.

l+C/84

♦

----cf6~7F:_

___

~--~-----J

Rl~K,f174Q02JJ

,

54

:_

____

J

•---::--:~IK

w1o:·-~+lc185

Rl65!

1 s

·1

1 1 Cl71

l~l~~~:$

~~gl

1

~

+ -

;;!1~1

•

/+

'0165

Rl86

-1

470.UF

'0

~,eaT

t~r

1~

~

0.04UFT8I~gTgI~1'rr~T

r

Rl77

~'a"~1~1

l(g\i

~ ~ ~

,oK

,sv

004UF

Rl66

Cl70

C,:~?,r

2.2K N ;::

ro

~

!:::

0:

!:::

Cl77 3.3K 4

;1:;Az;

!!1

RIBIIT6V

Rl82 Rl84

'

560

0.04JJF

~

t5

ii:

!:::

0

o:

u f

04UF

u u 3.9K

5.6K

680

u - .

~~E,·;:11-:,

~

. J

SWITCH DIAGRAM

:;

:J

'J

:;

0 0 0 0

2:

> > >

ID

mm

iii

u u u u

0.. 0.. 0.. 0..

0 0 0 0

I-

I- I-

~

a,

S3

LOW

CUT

S4

FM

MUTING

S5

TAPE

MON.I

S6

SPKRS(REM0TE)

S7

HIGH CUT

SB CONTOUR

~,

S9

EXT

DOLBY

NR

(TAPE

M0N,2)

S10 SPKRS(MAIN)

S10

S9

SB

S7

S3

S4

S5 S6

-9-

_I;

r'

:(

("

r-·

.

(,.)

·.

(""--,'

,)

/j '\~f)'·r

"\

~r::,,P

~,.,,..:1"

11P'

SCHEMATIC

DIAGRAM-MODEL

75 +

ANTENNA

/

,,,

.""

',

·--

----

........

,

,>--

........

/,'

........

__

i ;

,

__

FM/AM

____

_

DISCRETE PHO

NO/AUX

{LF)

FUNCTION

I.PHONO

2.STEREO

FM

""

4.DISCRETE

FM/AIJX

5.0rSCRETE

PHONO/AUX

6.AM

I

FUNCTION

I

S1-A-Sl-F

24028729

SI-A

DISCRETE

FM/AUX(LF}(cif-+---

MODE

I.MONO

2.STEREO

3.

SQ

MATRIX

I

4.SQ

MATRIX

2

5.ENHANCED

STEREO

6.4CH

DISCRETE I

MODEi

S2-A-S2-D

24028730

I

IFM

OUT PUT

Fo-;:========-----.-------=~---------------,-----.------1+-~

4R

DIAL

SCALE

i

:

'

~

!I--

i

I -

S1-F

i

--------

----------------------

.,..

+'="::I+ s

---='-------------"

--

.,,

,,.

_____

_J,

,------ri~~i"---:;;;-;;:;;-::-;;;;;;:;;-;;~;;;;;;------===F=:o=~=·~=:=::=:=g=u=Nl=N=G=M=E=T=E=R=={PA=•T=O=,='=UN=CT==•o=•=so=•=TC=H=l========:~~::~~:~~~~M:E-T=E~R~il=A:PM~P=•=ss=~=~-,=3~7~~~=-·=i1!==·===============================:::l-.l-..\85

I

BASS

I VR321 -VR621 23028769

,-----------

--

- -

--------

------

---

--------

----

- - -

-----

----

4,

--

-7

0311

ITREBLEI

VR322-VR622

230

BWi~

9

0313

1

"'ii~=:l~;:;.:==-:;;:.::::;:=:::::===:::::::::::;::::==~-~

, ,

------------------7

I

--:

:

!POWER

··11-

;I

l

: I i :

~~-o-~

:

I 1 :

pw;:;::i[KJ

';'.-'-:!:..+-----0--fl::] :

SPKRS

4-

8-16

OHMS

r----------,

~LS-'

ON1

MAI

+

LB

:

MAI

'

ON

:1

;1t'

OUT:

IN

[!}-r---;====:::::::t====-'.!+--1

r-----,-'------<:,--I_B_§J:

r---<?-:c""!',clii,;-~-O~-•~=::::~::~::i::I::~::~~::le::~:~;~:_-~-":_-,~~-;_~-::_I:~:;-_=-~:;-~=~----<~::_--B_=_=_,.-

-

--+-n'

~~~~~~-e':_p_o~-ET-s+--~

'

POWER

TRANSFORMER

TOIi

10128713

NOTES

DISCRETE PHONO/AUX (L.B)

(Ole-+----..

DISCRETE

FM/AUX

LB

(Ol~t-~-

DISCRETE

PHONO/AUX

(RBl@,----

DISCRETE

FM/AUX(RB)@P----

I.ALL

RESISTORS

IN

OHMS

UNLESS

FOLLOWED

BY

K

110

31ORM

110

6 l

2.ALL

CAPACITORS

IN

FARADS

UNLESS

FOLLOWED

BY

JI

(ICT

6)

OR

P_(ICT'~l

3.ALL

VOLTAGES

TAKEN

WITH

"O"

SIGNAL

-10-

$1-C

SI-

D

"!l

I 2 : TAPE

TAPE

our:

MON. I

'55

I

TAPE

MONI

I

APE

our:

MON

r

'

D◊:LBY

'

OOLBY

TAPEMON2

RT

PL021

PL022

PL023

PL024

fGJGJ

0 0

MODE

INDICATOR

LAMPS

46528739

L______

C:605

C6~

00082µ

00021,,

~S7

r-----------

i

'I

0022

3

1------1-+---~-0-._,f-<>--,r,

\ VR301

~

VR602

L...~-1rc11=-,-,--t1:J

<::&-__.---==

_,,,,_!rr

..._

-_.,i--t~':':.:::-"---'""""t"'Wr--r1--¢----c"--":>---H

E3

l___

-

~

--

-11-

PHONES

BACK

+

'

RF

i MAI

'

: +

' RB

:

MAI

'

:

: +

:

LF

I

REM

'

:

i : +

~LB

1 1 REM

'

°'''

' '

.-W---4

L:

0

,:

RF

: REM

'

':

' '

' ' +

~RB

ION I

REMOTE

1----f-..____

' '

Ff'L

_________

..J

:..C.C.....--'------

- '

L

__

-----

r-

,

'

NOT

USED

1

'

- I

POWER

TRANSFORMl:R

10128713

-

12

-

(PART

OF

MOOE

SWITCH)

PLOOI

STEREO

INDICATOR

LAMP

46528738

POWER

INDICATOR

I.AMP

46528787

J'

-,

SCHEMATIC DIAGRAM -MODEL

75

+

ANTENNA ~

--~-----~------

~

-

------

M-FM

TUNER B T P

-----------

'

: : r<'.Hlf--+-K. '

'

' '

'

/

~~----------~'

..../

___

FM/AM

FRONT

END_

00328740

______

j

-------------------

AM

LO0PSTICK

ANTENNA

20528752

B<U

FUNCTION

I.PHONO

2.STEREO

FM

3.FM

4 DISCRETE

FM/AUX

5.0ISCRETE PHONO/AUX

6.AM

IFUNCTION I

SI-A-51-F

24028729

DISCRETE PH0N0/AUX

(LF)<r>>--+----<

DISCRETE

FM/AUX(LF)ll>f---+-----.

SI-A

GRN

YE<

MODE

I.MONO

2.STEREO

3.

SQ MATRIX I

4.SQ MATRIX 2

5.

ENHANCED STEREO

6.4CH

DISCRETE

0161

Cl92

Io.ow

L

162

0101

IMODEi

S2·A-S2·D

24028730

016

ON

:1

;1il

OUT:

IN

LTH-------~~~~~~~~-------_t~~~~~~---l---,_+-1-

NOTES

DISCRETE PH0N0/AUX (LB)

(0:f--+----..

DISCRETE

FM/AUX LB

(0,)--j---

AM

SI

-C

DISCRETE

PHONO/AUX(RF)@

DISCRETE

FM/AUX

(RF)

@>------.

SI

- D

\

DISCRETE

PH0N0/AUX

(RB)@----__.__~

DISCRETE

FM/AUX(RB)@

• 0

.-

✓

u

I.

ALL

RESISTORS

IN

OHMS

UNLESS

FOLLOWED

BY

K

!10

3 l

OR

M

(10

6 l

2.ALL

CAPACITORS

IN

FARADS

UNLESS

FOLLOWED

BY

JJ

oo-

6)

OR

P(I0-,2)

3.ALL

VOLTAGES

TAKEN

WITH

"O"

SIGNAL

-10-

'S5

ITAPE

MON

I I

00:LBY

,

JtPi

I 2 : TAPE

OUT

IN

TAPE

our:

MON 1

DOLBY

',

I

,

I

I 2 TAPE

TAPE

OUT

MON I

R561

330

R661

330

sz-c

S2-D

[

I

1

I

l

I

_j

I

'

I

0102 0103

PL021

PL022

PL023 PL024

'--+---4----+----1

0

MODE

INDICATOR

LAMPS

46528739

0104

I

BASS

I

VR321

-

VR62i

23028769

0311

~

VR32~-~~~~--~--

MIOI

+ I -

.,..

+

'="":I

+

co~r

co~2

22p

FM-~~

287

R'NING

METER

-11-

I

_____

_j

(PART OF FUNCTION SWITCH}

:R5

'5

I

C548

SI-F

DIAL SCALE

LIGHTS

46528736

Fi,

_____

_

i

·~

: R2

1120

C2

,o

"f

-

METER

LAMP

46528737

L

__

47

)l

'------------,s,mc"'-Wv--'>-;c;ct,lc-c:t-----<:;>---

. .

i

:

C64

+

L

___

47µ

'-_._._

------=c-,-;=w.~<--=.,~__._---o--

s[fil]

~Q~47

SPKRS

4-8-16

OHMS

r---:;

FUSE

4A•{3AG

PHONES

~

FRONT :

~

p

'~

"

~

o3:4s

----t-----

I : : +

>--------@ii]

,------J--L.J~

PHONES

BACK

p

I

I I

/ : +

'

' '

I

Ni

M

,:

I

: I

~

LioN:

_

I M

I

'

I

'

I

'

KRS:

~

:

RE

FF:

I

I I

' +

'

N i

RE

I

FF1

I I

c±HF

-n

:

REM

--!/<>'''

' '

-----t---1L

__

L_,:,

N i

@RB

v,--..1

1

=-

: REMOTE 1

OFFL

_________

j

STEREO

R291

IOOK i

--

_"

,_

..

·.

__

_j_

POWER

TRANSFORMER

10128713

-12-

l

PART

OF

MOOE

SWITCH)

S2-

B ~

2

PLOOI

r~::R

INDICATOR

46528787

,~,

J'\

/ .--¥

>--

?

,:.,·

:i

.\

_c

---

.

..1

J

..

-.

)

v

v..l

V'

,Pf"

\.0,

\,,]-

CONNECTOR

BOARD

ro:FUNCTI~

SW.

SI-C-3F

ro:FuNCTION

SW.

SI-A-IF

6 7 8 9

10

11

12

13

14

15

16

17

18 19

20

21

22

3 4 5 6 7 8 9

10

11

12

13

14

15 16

17

18

19

20·2

I

22

/

a//c

/

a//c

/

a//c

/

a//c

\_

b\.

~

\

b"

'{

\.

b\_t

///I/Ill

[C}-

3 4 5

I 2

"' "'

"'

"' "'

"'

_,

~

N"

_,

_!,..

m m m m m m

' '

:...

' ' '

"' "' "' "'

"'

II)

Cl) Cl) Cl)

II)

3:

~

3: 3: 3:

.,

II)

.,

'{'

.,

.:,

~

.:, .:,

~

0

"'

0 g 0

~

0 0 0

::;;

0 0 b 0

~

0

>- >- >- >-

I-

~---~-ROM---,

rWIRECOLOR;

r--TO---,

CONNECTOR-l"CBrn

4/GNO~i5

VLT/YEJ-s2-al/:2

(MOOE-SW)

" - " IT] 5 /

GND--{

I

GRN/YELl-s2-8

1

12

")

• - "

rn

S I

GNO--(

RED/YEl)------s2-B

1

12

")

~

1 I

ONO--(

Bl!N

/GRlf---S2-8?/2

-

")

CCJ

I /

GND

--+(~

ORG

I

GRW--s2-B?/2

- ' )

[g

9 /

GND

--<@

VLT

/

GRy).._._s2-e

~2 ( - ' )

rn

10

I

GND

--(€,

GRN

/

GR'r}---S2-B

Y2

( -

")

@)

11

/

GND

--<@

RED

/

GRY)--s2-ao/2

( -

,")

[i)7/8

GND

--+(@

GRY)

~PC8(VOLUME)

m

'

"'

.,

3:

'{'

"'

0

::;;

0

>-

[])

9a

/10

b

---<@

GRY

/VLT)-souND

FILO BALANCE

[!]9c

/IOd

--(@

GRY/BL~-S7(HIGH

CUT)

[!J

11/12

GND

-.(@)

ORG)'----pqi(VOLUME)

[!]

13a

/14b

_.(@

ORG

/VLT)-----SOUND

FILO BALANCE

[I]

13c

/i4d

--(~

ORG/BU<)---Sr(HIGH

CUT)

[!)1Ms

GND--(@

BRN)----PCl(VOLUME)

[!)

17a

Iii

b --<@

IIRN

/VLT)-SOUNO

FILO

BALANCE

[!)11c

/lld

--@

BRN/BL~~sr(HIGH

CUT)

[!]

19/20GNO --(@)

YELJ----PCll(VOLUME)

[!)21a722b

--(8

YELlvLTJ--SOUNO

FILO BALANCE

[!)21c/22d

--<@

YEL/BLK)-sr(HIGH

CUT)

6 7 8

8

-13-

9

10

II

9

10

II

-~

~

_!,'!

..

' ' '

"' "' "'

Cl)

., .,

3:

~

(/) (/)

.:,

0 0 0

::;;

0 0 0

I-

>- >-

12

14-(g

13

12 13

14

-[Q]

>-

z

r

0:

:<

"'

' '

>- >-

0:

"' "'

~

.-,::

•°V

N_,

~

"'

.,,

..

'

"'

.,

Cl)

3: 3: 3:

(/)

.,

(/)

.:,

0 0 0

::;; ::;; ::;;

0 0 0

>- >- >-

~[,WHT/CRY

TO:MOOE

S2-Al/2

.-FROM

---,

r-

T

0--------,

i:114/llJl4(GNO)--so-PC.B

-

[i;],IQ]-

14(GND)

&11

!fl:i1

IGND)--

-[g,[l!j- l(GND)

i!:]13/GND----

{QelGNO----

~7

/GND----

itl2

/GNO----

-IQ-1:,(GND)

-

[g-8(GNO)

-[Q-7(GNO)

-(Q-2(GND)

REGULATOR

BOARD-TOP

CR 901

·EE

Q)

CR

902

·IE,

TO >C033 0 E 3

f.---'C:::~===-'

BLK

@'-----

INVERTER

BOARD

-

TOP

REGULATOR

BOARD

-

BOTTOM

Q901

&

~

-c:=~~=:::J--+TO:SI-E

(FUNCTION)

T0@-19

(CONCTOR)

TO,PCB(INV

AMP)R854,R852

.c::=:::===:3-------

TO'

C033

EtJ

@ORG

Q903

Q901

~

R901 IOK

~

INVERTER

BOARD

-

BOTTOM

-14 -

/c9o,

I

r

j10~F

50V

CR

901

------+-

..lQQL.

35V

C903

-:!:a:..

CR

902

------+-

+ -

-

C904

220~F

16V

SQ

BOARD

-

TOP

SQ

BOARD

-

BOTTOM

Q

--

I 2 3 4 5 6 7 8 9

10

II

12 13

14 Q

-15-

TONE

CONTROL

BOARD

-

TOP

,----FROM-

7 rWIRE

NO,

COLOR,

,--TO----

TONE

CONTROL

PCB@-1

YEL/WHT

-PCB(CONCTR)

{lt-22

,,

@-

YEL/GRN

- • {lt-21

n

©-

YEL/BLK

- •

~20

,,

@)-

ORGIWHT---.

• 00-14

n

@-

~

ORGIGRN

~

00-

13

©-@

ORG/9LK

- •

~-

12

®-I

BRNIWHT-

IAl-18

@-

BRN/GRN

-

IA}-

17

<l)-

BRN/BLK

-

[!1-16

(j)-

GIIY/WHT-

[Al-10

<ii)-

GRY/GRN

--

(Al-9

~

(])-@

GRY/BLK

- '

(»-

8

SOUND

FIELD

BALANCE

TONE

CONTROL

BOARD

-

BOTTOM

ro:P.C.B(CONNECTOR)~

9a

,rob-c:==::.,

-16-

LOW

CUT

BOARD/HIGH

CUT

BOARD-TOP

@

YEL/REO

TO-SIi

(STEREO-QUAD)

a

t~

c"8

"'

Q:

I!:

4J

~

1i

0 -

STRINGING DIAGRAM

S3 LOW-CUTSW.

S7

HIGH-CUT

SW.

SHAFT

6-

--7

LOW

CUT

BOARD -BOTTOM

-"Iv-

-....-

R632

C632

820K

0_047pF

820K

0.047)1f

R432

C432

-"Iv-

o-il-"

.y,.

-.-.

R431

C431

820K

0.0l!!pF

820K

0.015pF

R631

C631

.y,.

_

......

.A/v>

.......i----

R532

C532

820K

0.047pF

820K

Q047pF

R332

C332

""Iv-

o-il-"

-"Iv-

_

......

R331

C331

820K

0.015pf

820K

0.015pF

R531

C531

.A/v>

.......

._...

'

HIGH

CUT

BOARD -BOTTOM

~OINTER

(AT LOG

SCAL

"o"J

FLY

WHEEL

(TUNING GANG CLOSED)

-

17-

WIRING DIAGRAM

(A)

STEREO

S-11

---►

OUAD

......

~YE.L

TO:P.C.B~OWER

AMP)R641---

-

~~=:::::=::::::::::~

ro:s3(LOW

CUTIC632R632--

- -

TO:P.C.B(INV.)R856SC853----

- -

TO:

P.C.B(INV)R756SC753---

--

---y~-1-l==:lll~=:.~1:~!::='!.lJ:..::..fiei.L!:fc#===,

TO:S3(LOW

CUT)C432R432----

-

TO:P.C.B

g(POWER

AMP)R441----~ef:::;;;;:::;;:~::::;~

TO:P.C.Bl!rr)CPOWERAMP}~(GND)

TO:P.CB

IRE)(POWER

AMP)IE2-0UTHGN[t

TO:P.C.B

fr§CPOWERAMP)~(GND)

TQ:P.c.BIB]i(POWERAMP)~(GND)

TO:P.C.B

il!§)f'OWERAMP) C650SC

TO:P.C.B

l!ITICPOWER

AMP)

C650SCR543

To:ss([i)sPKRS(REMOTE)- -

TO:

S6@5PKRS(REMOTE)----~===Y

TO:P.CB

IQ'.JCPOWER

AMP)

C352SCR352:---c;::':';=;~=====;:=c~

TO:P.CB~(POWER

AMP)

C4528oCR452:----«!~~~=!-==,)~~===!!c==!b

u)

0

:;;

uJ

!I

@,

~i

I

,_I

a:

(!)

'

><

..J

m

~

\2

<.)

"'

~

z

a:

~

"'

..J

CD

'°'

1--

SPKP.

TERMINAL

.......

TO:s,o-·3 To:s10-

10.

SPKRS

(MAIN)

L (MAIN)R

+

0 0

'::;

~

15

:~-,

,I<\

·~ ID

BLK/YEL

T 021

r,i,i!,::==.as=e,=dJ

ro:P.C.8

IREGJ

~D)------

-~~====~~=#==="

TO:P.C.B

CONNECTOR)GND--------,l!~~~=J11~1H/-_,,

TO:P.C.B-R(INVJGND-------o>----a~;=!i!!!::==dl

T

OIi

~=--11----TO:P.C.B(REG)IQ]

l!::===--ll---TO:P.c.B(LAMP)

TO:P.C.B-L

UNVJGND-----------.i!!!!:~.a::=='11.========-============.!J

-18-

AC

PLUG

501

POWER

SUPPLY

SW.

HEAD

PHONE

JACK

BACK

WIRING DIAGRAM

(B)

FUNCTION SWITCH MODE SWITCH

PHOO<M\UX(LFJ

FM/AUX(LF)

FM/AUX(LB)

PHONO/AUX(LB)

SI-T

'WIRE

NO.

TO,

NO

,99GRY/BLK

@-@

ORG/81.K

@-@

101

BRN/BLK

@-@

I

YEUBLK

@-@

PH0001'lUX(RF)

FM/AUX(RBJ

FM/

AUX(RB)

PHONO/AUX(RB)

ro:P.C.BlTUN)Cl84,

Rl85

PNK

•AMIMET]

TO:P:C.B(TUN)

•

FM

®B

► ro:P.C.B(REG)C905,

0902

I-A

1-8

='="=/=ii==a'=-s1-T

.SI-C

-Sl-0

-S1-E

-s1-F

(FUNCTION SWITCH)

TO:P:C.B(CONNECTOR)

~5]

•

TO:P.C.B(voUvR(l),

<D

TO'.P.C.B(CONNECTOR)<~iJ

TO.PC.8(CONNECTOR)<£j%]

ro:P.c.s(coNNECTORk~NtJ

TO:PCB(CONNECTOS)<~5]

rn:ec.e(CONNECTORl<Bibl

--

19 -

~

PL021

PL022

PL.023

PL024

[gJ

TO:P.C.B(REG)

•

TO:

P.CS(CONNECTOR)~-12,

GNO

S2-T

~

IRE

NO.

TO.

NO

GRY/BLK(§)e,@)

' OAG/

BLK

@)<,@

~BRN/BLK

~

q9ZYEL/BLK

(j).@

WHT/t¾:P:C.B(CONNECTOR)(m-6,

GNO

1

EOl_~ro:P.C.B(COf'.NECTOR@5.

'3ND

II

VLT/BRN

'11--it-:---==:::=~~~::=::,--

ro:P.C.B(CONNECTOR)[ID-3,

GNO

""""<:!::::!:::~;=':::

2

:::R::Ne-/BR=+N

ro:P.C.B(CONNECTOR)

[Q]-4,

GND

_s2~I12

~s2-A212

=<s===l~====--s2-T

(MODE SWITCH)

-52-81/2

~s2-B2/2

Harman Kardon 75+ User manual

Popular Receiver manuals by other brands