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SERVICE

ZALPIN

MANUAL

Main

Amplifier

With

Pulse

Regulated

Power

Supply

Contents

——

SPECIFICATIONS

o.060

Sn

Ske

Sok

GR We

ws

bE

ek

cota

ald

syle

Bie

we

BN

ee

OO

Sw

aed

be

2

Parts

Location

and

Disassembly

Instructions...

0.2...

00...

cece

ce

eee

eee

eee

eet

eee

e

eas

3

to

4

ACjUStMent

PROCeGuires

es.

ccie

ie

so

cela

cients

fend

des

ae

tails

Ya

ice

ab

celle

W

Slane

oS

sana

ge

eee

biedl

ee

Rye

ag'

ble

en

evel

Sola

Sd

5

Adjustment:

Location:

2ric

ekki

cae

a

elle

tend

tae

dyd

wg

Se

a

aes

Gree

digs

wk

Susi

Oe

Sheela

ow

eb

aceee

«

6

BOCK:

Diagram:

&.).

a¥a

estes

erecesepetie

eis,

ORS

Scat

ae

Sota

Grier

hud

a

gaara

wee

Sow

eat

neces

ets

Dew

a

ete

Bee

atnenata

we

2

Sata

geiete

ie

6

Parts‘ayout-on:P:C-

Board

vino

ai)

bcSaceee

al

spaces

goals

@

Dee

dere

tenes

date

Se

E

wLe

ab

Se

ek

7

to

8

Wiring

Diagram

sess

eins)

sits

ee

Sat

ce

eo

Re

sw

heen

ae

aa

og

Bis

Glan

Sef

GUS

wl

eee

ee

BUS.

He

we

Se

ES

9

to

10

Schematic

Diagram

..

1.0...

ee

ce

ee

ee

eee

es

sedge

de

late,

ariel

ec,

8

See

eos

he

oiete

ode

6

AGS

11

to

12

Exploded:

View

sis:

s

et

one

siete

Sco

nance

Suele

g

NY

Aoejade

edie

dob

Be

ara

ee

bine

el

eae.

4,

Ge

eileen

Ueda

doceee

Sia

13

to

14

Semiconductors

Lead

Identifications...

0...

ee

ne

ee

eee

eee

ee

eee

een

eee

enenaes

15

Packing

Method?

ss:

sics.3y

etnies,

Seodlcie

PbS

wate

ots

hag

wtilane

saw

wae

ede

ees

e$

Me

Se

Sek

wid

15

Parts:

iS

t5:0/2o0

05

Stil:

Sean

ce

shidicetoas

talent

ae.

ahead

aa

A

Ste

ala

va

ee

alink

ar

TmelMeite,

hig

lapeP

on

osetualeebacelns

Quer

te

gisi

ac

ananeeaas.

¢

16

to

18

Specifications

POWer

SOUIGE!.

ei0

ena

aeavelie

er

oie

Seba

Gidoe

ben

aS

ae

a

Dla

nw

glee

ei

b

daw

te

14.4

VDC

(11.5

to

16V

allowable)

OUTPUT

RPOWEE

ssc

tab

ha

Soe

ene

Caen

wre

lee

Sata

cd

ee

Beta

is

ae

ana

8

RAL

30W

(1

kHz,

0.3%

T.H.D.)/ch

Distortion:(

TsO)

a

sais

wera.

aed

eee

heed

ted

Ais

Gece

ele

doer

be

eae

0.2%

(40

Hz

©

20

kHz,

20W/ch)

Channel

Separations.

sc

.:6

a0

seein.

ee

ee

a

are

ce

kid

ates

we

aed

Me

cen

eRe

a

eee

ews

40

dB

(1000

Hz)

Frequency

Response

.......

0...

ccc

eee

ee

ee

eee

ee

ee

eee

tenes

40

Hz

Vv

20

kHz

(-—3

dB,

1W)

Input

Sensitivity

(High/Low)

DID

tenses

Sa

he

als

ae

rvelinte

ek

he

Se

wd

ade

G

Ate

iba

ea

yd

wrass

does

tarada

tet

ooh

400mV/800mV

SPEAK

Clase:

sd

assis,

herdhee

4.

oie

Sala

PSE

ahah

PE

alle

kuie

be

er

hee

Ai

aoa

ace

we

1.5V/3V

Input

Impedance

DIM

epsieeg

Sod

eas

wed

De

oleh

tas

a.tese

aM

a

ae

Pale,

haikeate

etal

a

cue

hed

ah

ce

AOL

Deiat

an

4

15k

ohm

SPCAK

CM

creas

orc

preted.

bmn

lea

MA

weg

h

ia

adie

areisiae

ace

eue

aes

wealth

GNevs:

Sol

Death

hgaat

120

ohm

Signal

to

Noise

Ratio...

ec

eee

ee

eee

eee

eben

eee

58

dB

(Din

Input)

Load

lmpedante

6.

rien

eed

Sse

758

OA

ean

bow

ae

ates

WA

engl

Saree

cde

Bk

4

ohm

DIMenst

OSs

<6

jester

cay

ete

tate

tate

hyo

RR

ON

oe

yes

ood

eet

tusee

Guta

ice

pe

yaa

g

180(W)

x

50(H)

x

151.2(D)mm

Semi-Conductors...........

2

Dual

Transistors,14

Transistors,

21

D22

Diodes,

1

Thyristor,

2

Zener

Diodes,

.

1

1C,

1

Photo

Coupler

WIGHT.

Side

aus

ried

cael

Ua

ES

Saag

Wh

tre

nea

tint

tial

Utede

a

alec

cos

oad

Wear

ail

do

ate

a

te

i

1.8

kg

y

~—

Parts

Location

and

Disassembly

Instructions

Remote

ON

Power

Indicator

Input

Sensitivity

Switch

Figure

1

J3

Ground

tnput

Leads

(Black)

(For

Use

as

Power

Amplifier)

J1

Left

Input

Lead

(Green)

(For

Use

as

Power

Amplifier)

{

'

i

!

J2

Right

Input

Lead

(Gray)

(For

Use

as

|

2

Power

Amplifier!

oe

x

a

DIN

Connector

Ground

Lead

(Black)

To

Chassis

J7

Ground

Lead

(Black)

+

Gray/Yellow

To

Chassis

J6

”

Gray/White

Right

Speaker

Leads

J8

+B

For

Tuner/Deck

or

+

Green/Yellow

Radio

Player

(Red)

—

Green/White

Left

Speaker

Leads

J7

-

Ignition

Lead

(Yellow)

(Accessory

Terminal)

14

Figure

2

1.

Removal

of

Top

and

Bottom

Covers

(1)

Remove

four

screws

marked

“

©

”’

as

shown

in

Figure

5,

and

the

top

cover

can

be

removed.

(2)

Remove

four

screws

marked

“

@

”

as

shown

in

Figure

6,

and

the

bottom

cover

can

be

removed.

"

2.

Removal

of

Front

Panel

(1)

Remove

six

screws

marked

“’

#

"

as

shown

in

Figure

3.

(2)

.

Take

care

of

lead

wires

with

a

power

indicator.

3.

Removal

of

Rear

Panel

-

(1)

Remove

six

screws

marked

‘

0

”

as

shown

in

Figure

4,

and

the

rear

panel

can

be

removed.

Bottom

Figure

6

Power

Indicator

Figure

3

oO

’

Figure

4

fe)

Figure

5

Adjustment

Procedures

©

4.

Idling

Adjustment

@

Connection

Instruction

Oscilloscope

Signal

Generator

ae

@

Procedure

.

(1)

Set

the

D.C.

supply

voltage

to

14.4

volts.

huis)”

(2)

Set

the

signal

input

level

to

20

~

300

mili-volts.

(3)

Take

off

the

crossover

distortion

of

output

by

VR101

(L

ch.)

and

VR102

(R

ch.),

observing

oscilloscope.

(See

Figure

8)

Figure

8

2.

Protector

Operating

Point

Adjustment

®

Connection

Instruction

r

‘

AC

VTVM

()

Signal

Generator

R

~~o

2

Din

Jack

Din

Connector

Figure

9

@

Procedure

(1)

Set

the

D.C.

supply

voltage

to

14.4

volts.

(2)

Connect

2

ohms

load

to

one

channel

(Another

channel

is

open.)

(3)

Increase

the

input

signal

level,

and

adjust

VR103

to

operate

the

protector

when

output

becomes

6.75

volts.

(6.75

volts

in

2

ohms

load

is

equal

to

45

watts

in

open

channel.)

Adjustment

Locations

Booster

P.C.

Board

Block

Diagram

SP,

INPUT

R

POWER

AMP

{

DIFFERENTIAL

|

ee

(CURRENT

PERCEPTION)

INPUT

SENSITIVITY

SELECT

SW

RECTIFIER

RIPPLE

FILTER

CIRCUIT

CONVERTER

TRANSFORMER

LINE

PASS

IGNITIONO

FILTER

ne

eo

Sa

a

awed

RELAY

+8

CIRCUIT

PROTECTOR

CIRCUIT

Volume

P.C.

Board

POSISTOR

{HEAT

PERCEPTION)

¢

etme

OE

a

oe

at

ante

nema

Dr

SP,

OUTPUT

Ob

ne

a

Pa

%

ie

wor

Parts

Layout

on

P.C.

Board

(

Booster

P.C.Board

Volume

P.C.Board

,

cv

Top

View

oo)

OR

Bottom

View

|

Top

View

‘

7x

i

ot

——

a

o

A

C

—_)

GRY

BLK

HYEL

UD

GRN/YEL

GRN

GRY

BLK

a

Co

a

al

ESS

cored

Bea

Wot

a

ae

:

!

;

.

.

iB

:

in

AS

YEL

fick

a.

:

bets

be

eres)

Co)

GRY

~

Tr

|

(‘Ie

es

ee

aos

|

|

a

FE:

:

ae

;

GRY/YEL

GRY

|

a

ae

ec

——

fies

[a

=

5

|

a

TE

EGR

Yo

tates,

)

|

RR

:

Pert

teh

eeben

Asst

|

y

i

LS

=

=

See

|

Sti

:

é

GRR

secant

GRN/YEL

!

—S

iv

IGRN/WHT

}~

~

R162

og

:

;

Sasa

ts

ir

ane

5

ORGie

inoporerane

t

|

sf

j

ed

ip

te

de

:

‘a

ever

1

|

Peaylics

oe

at

ps

H

.

3

i

ies

4

*

Se

e

F

‘

As

| |

.

<

El

i}

.

as

BOOSTER

P.C.B

——

|

a

ane

ies

101

a

BLK

RED

YEL

is

~

is

|

t

|

»

0)

<

oan

K

BLK/

\

SHLD

Ea

piace

BBs

Aine

C

EI-4-

EI-

|

QIol

Q103

Q105

Q1o9

EI-3-

2SA798

28C945

2SD667

2SD896

,

QI107

Qitt

2SB647

2SB776

EI-2

OQ

89

L

88

a

E!

DIN

CONNECTOR

~Lch-

LINE

RIO3

INPUT

©

5.6K

14.3V]

El-1

(

DIN.CONNE)

ae

=

Ga

@%bo

IC

101

fee

=

a.

ox

=

Oxy

AN6551

R105

a

g

Q

als

Ba

a

ee

/

SP

47K

|

ox

>

=53

N

DIL

<

INPUT

©

Oo

6

|

Det

&SO

oO]

3

|,

1181555

\

J

|

ae?

a

eG

=Se

eis

vt

ol

LL

o

Tt

1

et

DIO7

=

=|

=

se)

7

Ee

:

=e

ep

tL

2g

=9

1$1555

q

ot

zo

joys)

a

=

ay

«7

o}

_{8

|

D108

oi

2

red

°

1

2FG

r

ISI§55

Dy

.

LINE

~

L

INPUT

E!-.

|

(DIN,

CON)

Q104

QI06

QO

sp

|

2SC945

2SD667

2SD896

.

38

59

0,.5/5W

-Rch-

LINE

cis

0.2-2W

0.2-2W_—

3300

/50V}

INPUT

©

iva

ol

El-2

RI7O

RI42

_

(

DIN,

CONNE)

Fa

~

INPUT

ae

:

Oo

vt

aU

KOO

J2

ox

S

b

223

oly

&

5

ae

=

CF

IO

FUSE

=

ZSS

|

of

wo

(88

|

230

(436V}0,2mH

Isa

J4

woh

wy

=s

£5

eee

om

t

O\L—o

IGNITION

252

Lo

=i

eS.

22.2V

oe

obs

Pt

;

O¥w

|

=z

fan)

rm)

oO

QI08

Q1l2

2SB647

2SB776

JS

=

o

tB

FOR

TUNER/DECK

XRELAY(RLIOI)

l2Vor

9V

TYPE

(Following

parts

must

be

changed

In

accordance

8

or

RADIO/

PLAYER

with

change

of

RELAY

)

So

REF:

NO

=|

Ng

El

-4

-RLIOI

of

as

©

(DIN.

CONNE)

470y-I6V

220)

-I6V

:

0

cS

S65

+B

INPUT

G

10n-1/4

ae

.

oe

|.

85%

a7

by

OHS

.

:

FROM

TUNER/DECK

:

1.

All

resistance

values

are

in

ohms.

K

=

1,000

1

Nom

“g-

aS

tes

$D847-B

3,9K-1/4

8,2K-1/4

2.

All

capacitance

values

are

in

microfarads.

P

=

1.000.000

8

)

one

6800

-

1/4

3,9K-1/4

v1

3@

s

J6

4

GND

Exploded

View

(General)