Marantz 1530 User manual

AS

C4

AYN

=

=.=

bs

kh

ee

model

1530/MR230/MR235

Streyphonir

Dieceier

MARANTZ

DESIGN

AND

SERVICE

Using

superior

design

and

selected

high

grade

components,

MARANTZ

Company

has

created

the

ultimate

in

stereo

sound.

Only

original

MARANTZ

parts

can

insure

that

your

MARANTZ

product

wil!

continue

to

perform

to

the

specifications

for

which

it

is

famous.

Parts

for

your

MARANTZ

stereo

are

generally

available

within

72

hours

throughout

the

nation

via

a

toll-free

line

to

our

National

Parts

Depot

in

California.

The

sales

professionals

who

take

your

call

immediately

refer

to

their

own

desk

top

com-

puter

terminal

and

can

quickly

determine

the

availability

and

price

information

you

require.

If,

for

some

reason,

your

order

should

exceed

our

available

stock,

we

usually

can

instantly

provide

an

alternate

replacement

part

or

current

delivery

infor-

mation,

When

the

order

is

placed

and

confirmed,

the

computer

simultaneously

generates

“hard

copy”

orders

at

the

distribution

center.

As

hard

copies

come

directly

from

the

computer

to

the

national

parts

depot,

your

requested

stock

is

assembled

and

prepared

for

shipment

and

placed

on

the

first

available

carrier

for

delivery

to

you.

ORDERING

PARTS

Phone

orders

will

eliminate

mail

delays,

and

we

encourage

the

use

of

this

method.

If

you

order

by

mail,

uue

MARANTZ

parts

order

forms

which

are

available

from

our

National

Parts

Depot

located

at

the

following

address:

SUPERSCOPE

NATIONAL

PARTS

DEPARTMENT

20525

Nordhoff

Street

Chatsworth,

California

91311

Phone:

1-800-423-5108

1-213-998-9333

The

following

information

must

be

supplied

to

eliminate

delays

in

processing

your

order:

Complete

address.

Complete

part

numbers.

Complete

description

of

parts.

Model

number

for

which

part

is

required

(indicate

MARANTZ).

Account

number

(for

account

customers

only).

PUN

Direct

consumers

will

be

provided

with

the

current

retail

price

quotation

on

available

parts

in

order

to

advise

themof

the

cost

of

the

parts

and

shipping.

OVERSEAS

PARTS

ORDERING

Parts

may

also

be

ordered

from

the

following

overseas

addresses:

CANADA

AUSTRALIA

JAPAN

Superscope

Canada,

Ltd.

Superscope

(Australasia)

Pty.,

Ltd.

Marantz

Japan,

Inc.

3710

Nashua

Drive

32

Cross

Street

(P.O.

Box

604)

3622

Kamitsuruma

Mississauga

Brookvale

2100

N.S.W.

Sagamihara

Shi

Ontario,

Canada

L4V1M5

Australia

Kanagawa,

Japan

EUROPE

Superscope

Europe,

S.A.

Marantz

France

Marantz

Audio

U.K.

Ltd.

Superscope

GmbH

Avenue

Leopold

III,

2

Rue

Louis

Armand

9

London

Road,

203

Max-Planck-Strasse

22

7120

Peronnes-Lez-Binche

92600

Asnieres

Staines

D-6072

Dreieich

1

Belgium

Hauts-de-Seine

Middlesex

West

Germany

France

England

All

of

the

above

locations

are

fully

equipped

to

take

care

of

your

total

service

needs.

Because

various

countries

have

differing

configuration

requirements,

it

is

necessary

that

you

contact

the

service

facility

in

your

particular

country.

In

the

ewent

that

there

is

no

service

location

listed

for

your

country,

please

contact

the

nearest

facility

for

the

necessary

assistance.

nRaaem

Bean

Bal

2.

We

sound

better

Zor

Ts,

TABLE

OF

CONTENTS

Section

Title

Page

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1

2.

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

...

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3.

ALIGNMENT:

PROGEDURES

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Alignment

Procedures:

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Alignment

Procedures

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VOUTAGE

CONVERSION

32553

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5-epee

cs

K.6

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6

B24

..

‘Binch

Diagram:

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x

ewer

ane

wel

nee

eae

BS

ae

ER

ae

BS

BER

ee

RE

eee

6

5.2

Tuner

Board

Schematic

Diagram

and

Component

Locations-P100...

2...

20...

..

eee

ee

te

we

ees

8

5.3

Phono

Amp

Board

Schematic

Diagram

and

Component

Locations-P400

1...

2.0.2...

0.

ce

ee

te

10

5.4

Main

Amp

&

Power

Supply

Board

Schematic

Diagram

and

Component

Locations-P700

...........

0.2.0

cu

eee

ew

ee

11

5.5

Antenna

Input

Board

Schematic

Diagram

and

Component

Locations-PCOO.........

0.0...

ee

eee

12

5.6

Tone

Amp

Board

Schematic

Diagram

and

Component

Locations-PEO0

...........

2...

cee

wee

ee

eee

te ee te

eee

12

5.7

Power

Transistor

Board

Schematic

Diagram

and

Component

Locations-PNOP

..

2.2...

0.0...

eee

ee ee

we

es

12

5.8

Filter

&

Switch

Board

Schematic

Diagram

and

Component

Locations-PSOO0

........

20.0...

eee

ee

es

13

5.9

LED

Board

Schematic

Diagram

and

Component

Locations-PY01

1.1...

.

0...

ce

cee

ee

ees

13

B.

EXPLODED

VIEWS:

AND-PARTS

LIST

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14

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semaigs

16

6.4

[P01-99]

Front

Chassis

and

General

Parts

2...

cee

ee

ene

ne

es

17

6.5

[P02-99]

Assembled

P.W.

Boards

and

Other

Parts...

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21

MODEL

1530/MR230/MR235

STEREOPHONIC

RECEIVER

INTRODUCTION

This

service

manual

was

prepared

for

use

by

Authorized

Warranty

Stations

and

contains

service

information

for

Marantz

Model

1530/MR230/MR235

Stereophonic

Receiver.

Servicing

information

and

voltage

data

included

in

this

manual

are

intended

for

use

by

the

knowledgeable

and

experienced

technician

only.

All

instructions

should

be

read

carefully.

No

attempt

should

be

made

to

proceed

without

a

good

understanding

of

the

operation

of

the

receiver.

The

parts

list

furnishes

information

by

which

replacement

parts

may

be

ordered

from

the

Marantz

Company.

A

simple

description

is

included

for

parts

which

can

usually

be

obtained

through

local

suppliers.

Figure

1.

Dial

Stringing

am,

fm

Soave

receiver

‘

SYSTEM.

Ft

SPEAKERS

1.

P.W.

BOARDS

As

can

be

seen

from

the

circuit

diagram,

the

chassis

of

Model

1530/MR230/MR235

consists

of

the

following

units.

Each

unit

mounted

on

a

printed

circuit

board

is

described

within

the

square

enclosed

by

a

bold

dotted

line

on

the

circuit

diagram.

Te.

TUONO

02a

ea

Sasi

oe

k s

mounted

on

P.W.

Board

P100

2.

Phono

Amp........

mounted

on

P.W.

Board

P400

3.

Main

Amp

&

Power

Supply

.:....

mounted

on

P.W.

Board

P700

4.

Antenna

lnput......

mounted

on

P.W.

Board

PCOO

5.

Tone

Amp.........

mounted

on

P.W.

Board

PEOO

6.

Power

Transistor

mounted

on

P.W.

Board

PNO1

D2

PUSEs

woe

eck

iat

hib

ace

eee

mounted

on

P.W.

Board

PPO1

8.

Filter

&

Switch

.....

mounted

on

P.W.

Board

PSOO

BE

De.

gek

aveck:

Gein

Spe

mounted

on

P.W.

Board

PYO1

2.

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

This

table

lists

the

test

equipment

required

for

servicing

the

Model

1530/MR230/MR235

Receiver.

Manufacturer

and

Model

No.

Sound

Technology

Model

1000A

AM

Signal

Generator

Signal

source

for

AM

alignment

Test

Loop

Use

with

AM

Signal

Generator

Signal

source

for

FM

alignment

Stereo

separation

alignment

and

trouble

shooting

FM

Signal

Generator

MPX

Signal

Generator

nuns

TaehAbla

Distortion

measurements

Mode!

1700A

sv

Sinewave

and

squarewave

signal

source

Voltage

measurements

(AC)

Tektronix

Model

T932

Waveform

analysis

and

trouble

shooting

and

Philips

Model

3232

ASO

alignment

Fluke

Model

1900A

MPX

Oscillator

adjustment

(VCO)

Trouble

shooting

Voltage

measurements

(DC)

|

Monitors

primary

power

to

amplifier

Monitors

amplifier

output

under

short

circuit

condition

Distortion

Analyzer

Audio

Oscillator

AC

VTVM

Oscilloscope

Frequency

Counter

Circuit

Tester

Fluke

Model

8000

“Digital”

Simpson

Model

313,

Triplet

Model

801

Simpson

Model

1379

DC

VTVM

AC

Wattmeter

AC

Ammeter

Commercial

Grade

(1-10A)

Monitors

potential

of

primary

power

to

amplifier

Line

Voltmeter

Simpson

Model

1359

Superior

Electronic

Co.,

Powerstat

Model

116B—10A

Sharad

Plu

Use

phono

plug

with

600-ohm

Shorts

amplifier

input

to

eliminate

noise

g

rug

across

center

and

shell

pickup

Output

Load

(8

ohms,

.

Provides

8-ohm

load

for

amplifier

output

+0.5%,

100W)

eommerctalsatads

termination

Output

Load

(4

ohms,

wae

Provides

4-ohm

load

for

amplifier

output

Variable

Autotransformer

Adjusts

level

of

primary

power

to

amplifier

FTZ

REGULATION

instruction

for

the

use

in

the

range

other

than

specified

in

FTZ

codes.

Achtung

fiir

die

Leute,

die

in

dem

Gebiet

wohnen,

wo

die

FT

Z-Bestimmungen

vorherrschend

sind.

Sollte

das

Gerat

auch

fir

Frequenzen

auszerhalb

des

in

den

FTZ-Bestimmungen

angegebenen

Bereiches

empfangebereat

sein,

bitten

wir,

den

Bereich

durch

Nachstellen

des

Kernes

in

der

Oszillatorspule

(in

der

Abbildung

mit

“FTZ"’

gekennzeichmet)

so

zu

korrigieren,

dass

er

den

Bestimmungen

entspricht.

3.

ALIGNMENT

PROCEDURES

*

A

dummy

resistor

of

47

kohms

must

be

connected

across

the

tape

output

terminals

before

alignment.

3.1

FM

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

‘“FM”

position)

Signal

Source

Connection

Sweep

generator

to

point

(B)

through

5pF

capacitor

RF

generator

to

FM

antenna

terminals

(@)

through

matching

network

(300

ohms,

balanced}

Maintain

RF

level

below

limit.)

Signal

Indicator

Set

Dial

Frequency

Connection

Pointer

to:

FM

IF

ALIGNMENT

Oscilloscope

to

L104

for

maximum

and

10.7

MHz

:

2:

ont

©

symmetric

response.

market

at

e

Quiet

point

on

x

F:

10.6,

10.7

and

band.

10.8

MHz

L201

for

straight

and

i

t

4

aa

of

te

a

°

symmetric

“S”

curve

P

response,

Repeat

steps

1

and

2.

FM

RF

ALIGNMENT

87.4

MHz

with

L103

for

maximum

tuning

gang

closed.

output.

109

MHz

with

C119

for

maximum

VTVMtoLorR

tuning

gang

open.

output.

channel

output

(W002)

L101,

L102

for

90

MHz

maximum

output.

100

MHz

Ant.

RF

trimmer

for

106

MHz

106

MHz

maximum

output.

Repeat

steps

1

to

4.

Check

overall

response

curve

and

repeat

above

steps

as

necessary

to

obtain

maximum

sensitivity.

No

connection

RF

generator

1

mV

output

to

FM

antenna

terminals

(A)

through

matching

network

(300

ohms,

balanced)

RF

generator

12.5uV

output

to

FM

antenna

terminals

(A)

through

matching

network

(300

ohms,

balanced)

L201

primary

core

No

signal

DC

VTVM

{bottom)

for

‘‘0’’

voltage

1-voit

range

to

©)

‘

|

reading.

L201

secondary

core

(upper)

for

minimum

distortion.

Distortion

meter

to

R232

so

that

signal

strength

meter

M00

1

may

read

85%.

MUTING

CIRCUIT

ALIGNMENT

R233

for

12.5uV

VTVMtoRorL

threshold

level.

(During

channel

output

98

MHz

the

adjustment

turn

(W002)

the

muting

pushswitch

“ON”),

3.2

MULTIPLEX

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

“FM”

position)

Signa!

Source

Signal

Connection

Frequency

No

RF

generator

to

FM

modulation

antenna

terminals

through

matching

network

(300

ohms,

balanced),

with

1mV

FM

stereo

simulator

RE

level

and

100%

modulation

(pilot

9%)

Stereo,

left

(1,000

Hz)

Stereo,

right

(1,000

Hz)

3.3

AM

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

““AM”’

position)

Signal

Source

Signal

Connection

Frequency

Set

Dial

Pointer

to:

Indicator

Connection

R326

so

that

frequency

counter

may

precisely

read

19

kHz.

Frequency

counter

to

point

(E)

(J140)

VTVM

to

right

channel

output

(W002,

White)

R316

for

maximum

output

and

same

separation

in

both

channels.

VTVM

to

left

channel

output

terminal

(H)

(J123)

(W002,

Red)

Repeat

steps

2

and

3.

Set

Dial

Pointer

to:

Indicator

Connection

No

connection

No

signal

Sweep

generator

to

455

kHz

point

(F)

marker

515

kHz

1,650

kHz

RF

generator

to

AM

antenna

terminals

through

IHF

dummy

600

kHz

1,400

kHz

AM

IF

ALIGNMENT

R228

to

that

signal

strength

meter

MOOt

may

read

0.

L154

for

maximum

and

symmetric

response.

Oscilloscope

to

Quiet

point

on

point

G)

(J141)

band.

AM

RF

ALIGNMENT

L153

for

maximum

output.

515

kHz

with

tuning

gang

closed.

1,650

kHz

with

tuning

gang

open.

OSC,

trimmer

for

maximum

output.

VTVM

to

Lor

R

channel

output

(W002)

LOO1

for

maximum

output.

600

kHz

Ant.

trimmer

for

1,400

kHz

maximum

output.

Repeat

steps

1

to

4

as

necessary

to

obtain

maximum

sensitivity.

3.4

AUDIO

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

““AUX”’

position)

|

Signal

Source

Wait

2

min.

after

power

has

been

on.

Adjust

R717

and

R718

until

distortion

for

0.25W

output

is

minimum,

CAUTION:

After

adjustment,

discon-

nect

input

signal,

and

make

certain

that

current

flowing

from

R741

to

R744

is

10

to

30

mA.

Distortion

meter

used

AF

oscillator

to

AUX

jack

Distortion

meter

to

SPK

OUT

terminals

with

42

load.

DC

voltmeter

in

100

mV

or

50

mV

range

to

R741

(R743)

and

R742

(R744).

Adjust

R717

and

R718

until

current

is

Voltmeter

used

10mA

4,

VOLTAGE

CONVERSION

The

Model

1530/MR230/MR235

is

equipped

with

a

uni-

versal

power

transformer

that

may

be

adjusted

to

operate

at

110

V,

120

V,

220

V,

or

240

V

AC

at

50

to

60

Hz.

To

convert

the

unit

to

a

different

power

source

voltage,

reposi-

tion

conversion

plug

at

shown

in

Figure

2.

CAUTION:

DISCONNECT

POWER

SUPPLY

CORD

FROM

AC

OUTLET

BEFORE

CONVERT-

ING

VOLTAGE.

ef

&

@®

For

110V

Operation

For

120V

Operation

For

220V

Operation

For

240V

Operation

Figure

2.

Voltage

Conversion

Chart

5.

DIAGRAMS

5.1

BLOCK

DIAGRAM

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|

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SPEAKER

SYSTEM

1

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2

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FM

RF

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FM

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Marantz 1530 User manual

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