Marantz Pm243 User manual

9

Using

superior

design

and

selected

high

grade

components,

MARANTZ

company

has

created

the

MARANTZ

DESIGN

AND

SERVICE

ultimate

in

stereo

sound.

.

Only

original

MARANTZ

parts

can

insure

that

your

MARANTZ

product

will

continue

to

perform

to

the

-

specifications

for

which

it

is

famous.

Parts

for

your

MARANTZ

equipment

are

generally

available

to

our

National

Marantz

Subsidiary

or

Agent.

'

ORDERING

PARTS:

Parts

can

be

ordered

either

by

mail

or

by

telex.

in

both

cases,

correct

part

number

has

to

be

specified.

If

bis

TECHNICAL

ASSISTANCE

|

Should

you

require

any

other

technical

support,

do

not

MARANTZ

EUROPE

&

Co.

order

by

mail,

fulfil

MARANTZ

order

forms.

The

following

information

must

be

supplied

to

eliminate

delays

in

processing

your

order:

.

Complete

address

«

Jeu

iption

Wi

pars

.

Way

of

shipment

.

MO

OF

&

Gd

PN

—

:

Complete

part

numbers

and

quanties

required

Th

me

oe

oyers

rm

>

on

mF

naris

.

Model

number:

for

which

part

is

required

.

Signature:

any

order

form

or

telex

must

be

signed.

_

otherwise

such

part

order

wil

be

considered:

as

null.

and.

mee

PARTS

ORDERING

__.

Parts

may

be

ordered

at.the

following

addresses:

AUSTRIA.

HORNYPHON

'

.

Vertriebsgeselischaft

GmbH

Wienerbergstrasse

1

‘

A1101

Wien

Austria,

Telex:

132.332.

EIRE

MARANTZ:

IRELAND

Ltd.

Newstead

©

Glonkeagh

Dublin

4

Telex:

25200

:

FINLAND

|

-

AUSTRALIA

-

MARANTZ

AUSTRALIA

-

PTY.,

itd.

.

19

Chard

Road

|

Brookvale,

NSW

2100

Australia’

Telex:

24121

BELGIUM

SVD

DIVISION

MARANTZ

‘

Industrialaan

1

1720

Groot-Biigaardan

Belgium.

Telex:

24466

CHILE

MARANTZ

i

~

DIVISION

OF

PHILIPS

S.A.:

AV.

Santa

Maria,

0760

Casilla

2687

Santiago

Telex:

240.239

DENMARK

MARANTZ

es

DIVISION

OF

PHILIPS

SERVICE

A/S

.

Prags

Boulevard

80

Postbox

1919

DK-2300

Ke@benhavn

S

Denmark

Telex:

31201

~

Telex:

529821

MARANTZ

DIVISION

OF

OY

PHILIPS

Ab

Kaivokatu8

;

00100

Helsinki

Finland

©

Telex:

124811

FRANCE

|

MARANTZ

FRANCE

.

4

Rue

Bernard

Palissy

92600

Asniéres

Franca

Telex:

611651

GERMANY

—

MARANTZ

GERMANY

GmbH

Max-Planck-Strasse

22

_-

6072

Dreieich

1

Germany

THE

NETHERLANDS

MARANTZ

De

Limiet

3

.

4131

NR

Vianen.

The

Netherlands

Telex:

47679

t

-NORWAY

ss

-.

MARANTZ

us

“

<

DIVISION:

OF

PHILIPS

AIS

it,

Sandstuveien

40

i

oa

"Oslo

6

:

Norway.

-.

Telex:

72640.

,

‘GREAT

BRITAIN

-

:

MARANTZ

AUDIO

U.K.

Ltd

>

Unit

15/16

Saxon

Way

Industrial

Estate

Moor

Lane

Harmondsworth

UB7

OLW

.

|

Great

Britain

—

Telex:

935196.

GREECE

sw

ADAMCO

S.A.

P.O.Box

21025

_

Hippocratus

Street

188

Athens

71410

—

a

.

Greece

Telex:

216.

795.

-

MARANT

TZ

ITALIANA

S.p.A..

Via

Monte

Napoleone

10

20121

Milano

Italia

-

JAPAN

MARANTZ

JAPAN,

Inc..

-

35-1,

7-chome,

Sagamiono

.

_

Sagamihara-shi,

Kanagawa

—

Japan.

~-—1-Telephone:

(02)

6407830-(1011)-—

|

Telex:

26602

Ignacio

iglesias

10

Avenue

Louise

326

-

Bte.

32

B-1050

Brussels

Belgium

hesitate

to

contact

the

Technical

Department

of

Fax.:

(02)

649.29.20

KUWAIT

*

“AL.ALAMIAH

ELECTRONICS

.

Ussama,

‘Building

:

.

._.

Fahd

al

Saleem

Street

~

P.O.Box

23781.

.

Safat-Kuwait

Telex:

22694

-

SAUDIARABIA:

it«s

"AL

ALAMIAH

ELECTRONICS

—

P.O.Box

5954:

University

Street

Riyadh

11432

_

Saudi

Arabia

»

.

Telex:

201530

SOUTH

AFRICA

-MARANTZ

°

7

DIVISION

OF

PHILIPS

SA

Rainer

House

Ove

Street,

10

Doornfontein

—

_

Johannesburg.

—

_

Telex:

483.456

SPAIN

PHONO

S.A.

Badalona

eareerons)

~

Spain

|

‘Telex:

§9355

—

SWEDEN

©

MARANTZ

_

DIVISION

GF

PHILIPS

Férsaljning

AB

_~

Tegeluddsvagen

1

~§-115

84

Stockholm

a

Sweden.

iz,”

%

SP

Telex:

14060

SWITZERLAND

_

DYNAVOX-

ELECTRONICS

'

Route

de

Villars

105

-

1701

Fribourg

-

.

Switzerland.

—

-

Telex:

942377

TURKEY.

~

DOGRUOL

Ltd.

1LM.C.

6

Blok

N°6310°

Unkapani

-

Istanbul

|

~

Turkey

7

Telex:

22085

_

MALTA.

CACHIA

&

GALEA

-

Republic

Street,

68D

_.

Valetta

|

Telex:

1682

-

'

U.S.A.

MARANTZ

COMPANY,

inc.

National

Service.

Department:

.

_

P.O.Box

877

|

weg

Usa.

CA

91317

©

“og

All

of

the

above

locations

:

are

fully

equipped

to

take

care

2

of

your

total

service

needs.

Because

various

countries

ave

-

differing

configuration

requirements,

it

is

necessary

that

you

contact

the

service

facility

in

your

particular

country.

In

—

__

the

event

that

there

is

no

service

location

listed

for

yout

country,

please,.

contact

the

nearest

facility

for

the

necessary

7

assistance.

M

199

In

case

of

difficulties,

do

not

Reeneie

to.

contact

the

Technical

Department

at

abovementioned

address.

mancanccamntz:

)

wa

om

seen

noe

To

2

ee

;

‘

+

Fi

.

‘

5

‘

+

.

*

‘

%

4

:

-.

5

:

oar

a

2.

Se

SYS

et

adege

ay

ifn

=

ae?

5919

93

398

ety

‘

* .

ie

ae

sw

Mek

tens

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eae”

‘TABLE

OF

CONTENTS

SECTION

:

PAGE

INTRODUCTION.............cceceeeeees.

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ead

eee

ee

1

APM

RORAOS

con

cins

sasuke

n

eeenanedaurueie

canta

tenance

eaeees

need

1

2.

FUNCTION

OF

EACH

PART

...

1...

ccc

eee

teen

anne

eenes

wee

eeees

1

3,

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

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

ee

4.

uPC1270H

(0701,

0792)

POWER

AMPLIFIER

DRIVE

..........0..0cccceceeeeeeeeeeeee:

baie

2

5.

NJM7815

(0801)

—

3

TERMINAL

CONSTANT-VOLTAGE

REGULATED

POWER

SUPPLY

.

eee

4

6.

VOLTAGE

CONVERSION

...........

t

chabeace

eas

seebas

Saya

Stenicosaeetia

ane

ee

5

7.

BLOCK

DIAGRAM

............0.0000

socieatin

saa

tonee

iene

sae

bereits

ee

er

6

8.

SCHEMATIC

DIAGRAM

AND

COMPONENT

LOCATIONS

...........-..-.0-00--

sta

daneeaee

7

8.1

Main

Amp

Assembly

(P700)

Schematic

Diagram

and

Component

Locations

.........0.0ceceneoes

7

8.2

Indicator

Assembly

(PS00)

Schematic.

Diagram

and

Component

Locations

Sein’

fies

crate

acutaieg

2

a

eae

7

8.3

6P

Connector

Assembly

(PV50)

Schematic

Diagram

and

Component

Locations

i

:

.

bu

ise

argue

an

Ante

aselaie

8

8.4

16P

Connector

Assembly

(PV00)

Schematic

Diagram

and

Component

Locations

:

sa

eres

eee

8

8.5

Power

Switch

Assembly

(PGOO)

Schematic

Diagram

and

Component

Locations

.

cei

etie

Ad

teases

creas

8

9.

EXPLODED

VIEW

AND

PARTS

LIST

6:22.34

ee

re

ee

nuit

een

enetee

eae

nies

9

10.

ELECTRICAL

PARTS

LIST

...-....0ce0ceicnececccccccceecencneeaeenteccenecuceeenes

12

11.

TECHNICAL

SPECIFICATIONS...........20cscceccececceeeecseceeseuseesseeeeeaeenes

15

12..

SCHEMATIC

DIAGRAM

ici.

o

co

iSite

Veo

eee

te

a

ie

ee

Nea

ae

ee

16

Marge

MODEL

PM243/143

STEREO

PRE

MAIN

AMPLIFIER

:

#¥

oo”

gia

ae

Ee,

SILRES

ame

ER

SMODEL

#263

INTRODUCTION

This

service

manual

was

prepared

for

use

by

Authorized

Warranty

Stations

and

contains

service

information

for

the

Marantz

Model

PM243/143

Stereo

Pre

Main

Amplifier.

Servicing

information

and

voltage

data

included

in

this

manual

are

intended

for

use

by

knowledgeable

and

ex-

perienced

personnel

only.

All

instructions

should

be

read

carefully.

No

attempt

should

be

made

to

proceed

without

a

good

understanding

of

circuitry

operation.

The

parts

list

furnishes

complete

ordering

information.

Most

replacement

parts

should

be

ordered

from

the

Marantz

Company.

However,

a

simple

description

is

in-

cluded

for

parts

which

can

be

obtained

locally.

2.

FUNCTION

OF

EACH

PART:

(1)

TREBLE/BASS/MIDDLE

SWITCH

By

using

the

loudness

circuit

and

setting

the

tap

position

on

sch

VR

to

70%,

100

Hz

and

10

kHz

are

boosted.

A

TR

1.

P.W.

BOARDS|

As

can

be

seen

from

the

circuit

diagram

the

chassis

of

Model

PM243/143

consists

of

the

following

units.

Each

unit

mounted

on

a

printed

circuit

board

is

discribed

within

the

square

enclosed

by

a

bold

dotted

line

on

the

circuit

diagram.

:

4.

Main

Amp

.........

mounted

on

P.W.

Board

P700

2.

Power

Switch.......

mounted

on

P.W.

Board

PGOO

3.

Indicator..........

mounted

on

P.W.

Board

PSOO

4.

16P

Connector

......

mounted

on

P.W.

Board

PVQOO

5.

6P

Connector.......

mounted

on

P.W.

Board

PV50

impedance

element

is

inserted

in

the

NF

lines

of

the

main

arenes

to

achieve

boosting

of

the

middle

range.

|

100

Hz

+6

dB,

1

kHz

+4

dB,

10

kHz

+3

dB.

(2)

POWER

AMPLIFIER

_For

voltage

amplifier,

monolithic

IC

uPC1270H

|

covering

as

far

as

the

driving

step

is

used;

and

for.

the

final

step,

a

discrete

transistor

ts

used,

making

up

the

power

amplifier.

No

idling

adjustment

is

required;

if it is

needed

according

to

varistor

diode’

s

rank,

it

is

done

by

changing

the

serial

resistance.

The

0

rank

is

used

for

this

unit.

(3)

MUTING/LIMITER

Muting

is

enabled

when

the

power

is

turned

ON/OFF

by

controlling

the

voltage

at

2

of

uPC1270H

(the

+

side

sf

the

front

step)

with

OQNO1

—

OQNO3.

An

abnormal

voltage

caused

by

short-circuiting

of

the

speaker

system,

etc.,

detected

by

QNO6

and

ONO7

so

that

the

above

muting

circuit

is

driven

by

QNOS

and

ON10.

N

aaqt

3.

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

This

table

lists

the

test

equipment

required

for

servicing

the

Model

PM243/

143

Stereo

Pre

Main

Amplifier.

a)

Voltage

measurements

(AC)

_ | |

ACVTVM

—

Oscilloscone

—

Waveform

analysis

and

trouble

shooting

and

ASO

alignment

=

Trouble

shooting

| |

.

| |

DC

VTVM

a

|

4

Voltage

measurements

(DC)

Circuit

Tester

Variable

Autotransformer

(0

~

140V

AC,

10A)

Adjust

level

of

primery

power

to

amplifier

|

Shorting

Plug

Shorts

amplifier

input

to

eliminate

noise

pickup

4.

yPC1270H

(0701,

0792)

POWER

AMPLIFIER

DRIVE

|

te

uPC1270H

is

a

semiconductor

integrated

circuit

developed

Connections

for

driving

stereo

Hi-Fi

power

amplifier.

The

internal

circuits

consist

of

a

voltage

amplifying

circuit,

T

pinno.

|

Connection

pre-drive

circuit,

drive

circuit,

and

protection

circuit.

It

has

wai

+Vcep

(Pre

Driver

Regulator)

.

an

external

shape

of

a

12-pin

smiall-size

single

in-line

package.

eel

+Vccp

(Pre

Driver

Regulator)

|

3s

MUTING

|

INPUT

~

Fg

—Veccp

(Pre

Driver

Regulator)

[|

10

—Vccd

(Drive

Regulator)

LOWER

OUTPUT

UPPER

OUTPUT

:

+

cop

.

+V

cep

MUTING

(FORWARD)

(ORIVER}

12

NO

INVERTING

{POWER

DRIVER)

INPUT

Differentiat

Protection

INVERTING

Amplifier

Circuit

INPUT

OUTPUT

2

(POWER

DRIVER)

—Vecp

FREQUENCY

COMPESATION

(BIAS

}.

~V

cep

Wecnecros

(DRIVER

}

Mae

_—

Maximum

Ratings

(Ta

=

25°C)

ae

Characteristics

,

;

No-Operating

Supply

Current

Storage

Temperature

_

A

O~

+160

—*Ta=75°C

100mm

x

106mm

x

imm

Alminium

Heat

Sink

Closed

Loop

Voltage

Gain

|

E

ji

Output

Offset

|

Voltage

No-Operating

Supply

Current

Maximum

Output

Voltage

3

Open

Loop

Voltage

Gain

|

~

Output

Noise

Voltage

an

|

Band

Width

PBW.

|

atio

Mute

ON

Output

Vv

|

Offset

Voitage

_

OFF

(MUTE)

i

ri

a8

*h

Operating

Supply

Current

|

Vecp

+45

|

me

we

—

Maaqe

5.

NJM7815

(0801)

—

3-

TERMINAL

CONSTANT-VOLTAGE REGULATED

POWER

SUPPLY

NJM7815

is

a

regulator

IC

with

3

positive

output

terminals,

integrating

series

regulator

circuits

on

1

chip.

LOCATION.

|.

OUTPUT

2.

GND

3.

INPUT

Maximum

Rating

Characteristics

fi

Input

Voltage

i

1

}

i

Storage

Temperature

Operating

Temperature

Characteristics

|

Junction-Circumference.

|

0

ja

70

:

Temperature

Resistance

ey

CAN

Junction-Case

6G

j

Electric

Caracteristics

Vo

|

V

Output

Voltage

Vin

=

23V,

Io

=

0.54

14.4

15.6

Reactove

Current

—

la

|

Vin

=

23V,

lo

=

OMA

—

6.0

|

mA

Load

Reguration

AVo—lo

Vin

=.23V,

Io

=

0.05~

1.54

Line

Reguration

|

AVo

—

Vin

=

17.5

~

30V,

Io

=

0.5A

Ripple

Rejection

Ratio

|

RR.

|

Vin

=

23V,

ein

=

2Vp-p:

f

=

120Hz

Noise

Voltage

Vu

My

=

23V,

19

=

0.5A

Vin

=

23V,

Io

=

5mA

Output

Voltage

6.

VOLTAGE

CONVERSION

@e

EUROPEAN

MODEL

ONLY

To

convert

the

unit

to

a

different

power

source

voltage,

.

change

the

position

as

illustrated

in

the

drawing

below.

CAUTION

7

|

DISCONNECT

POWER

SUPPLY

CORD

FROM

A

OUTLET

BEFORE

CONVERTING

VOLTAGE.

Voltage

Conversion

Chart

-

VOLTAGE

SELECTOR

|

Note

on

safety:

Symbol

A

Fire

or

electrical

shock

hazard.

Only

original

parts

| |

should

be

used

to

replace

any

part

marked

with

symbol

A

.

Any

other

component

substitution

(other

than

original

type),

may

increase

risk

of

fire

or

electrical

shock

hazard.

dee

TNE

8

=

ee

one

BLOCK

DIAGRAM

7,

nee

usNvads

ou

3

AlddNS

YaMOd

~

TSNNVHD

HOVE

_

oo

¢

=

ONILAW

J3NNVHO

.

YSH.LO

|

MALIN

INa8YND

LINDYID

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LiNdYId

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=

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|

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|

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we

2*

2

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adv

m

OL

YOLOSNNOD

L310

d9i

|

~

Ma3o2

Peaata

SCHEMATIC

DIAGRAM

AND

COMPONENT

LOCATIONS

8.

8.1

Main

Amp

Assembly

(P700)

Schematic

Diagram

and

Component

Locations

en

"}

ow’

:

A

ae

PEE

ID

4%

MANS

1

:

ce

ewe

eat

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ee

eee

ea

:

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ONO

nner

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ne

N

:

422

—_

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:

ais

4

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ey

we

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ee

=

,

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OK

OSE

nez

;

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b1Ld

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yer

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:

Zz

BOF

s

i

ae] kas

ASE

d~

3089

CONN

mt

ag

3

4

Pad

=

:

x

oct.

9INY

oa

y

+

A0G/0i

POND

AD/O

a

9000°T

+

a

losoy

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Marantz PM243 User manual

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