Marantz SR800 Manuale utente

A

4

PYN

Rm

am

eam

ee

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model

SR800

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

will

continue

to

perform

to

the

specitications

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,

use

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).

OWN

=

Direct

consumers

will

be

provided

with

the

current

retail

price

quotation

on

available

parts

in

order

to

advise

them

of

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,

[nc.

3710

Nashua

Drive

32

Cross

Street

(P.O.

Box

604)

3622

Kamitsuruma

Mississauga

Brookvale

2100

N.S.W.

Sagamihara

Shi

Ontario,

Canada

L4V

1M5

Australia

Kanagawa,

Japan

EUROPE

Marantz,

S.A.

Marantz

France

Marantz

Audio

U.K.

Ltd.

Marantz

GmbH

Avenue

Leopold

II,

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

event

that

there

is

no

service

location

listed

for

your

country,

please

contact

the

nearest

facility

for

the

necessary

assistance.

name

Been

ual

z..

We

sound

better

TABLE

OF

CONTENTS

Section

Title

Page

4-4P

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3

2.

TEST

EQUIPMENT

REQUIRED

FORSERVICING

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3

3.

FM

ALIGNMENT

PROCEDURES

.........--

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4

3.1

FM

IF

Alignment

2.0.0.0

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4

3.2

FM

RF

Alignment

.

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ees

4

3.3

Muting

Circuit

Alignment

2.2.22.

60

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4

3.4

Multiplex

Alignment

Procedures

2.2...

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5

4.

AM

ALIGNMENT

PROCEDURES)

........

2...

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5

4.1

AMIF

Alignment

2.2.0.0...

0.

2

ee

tee

eee

5

4.2

AMRF

Alignment

2.0.0.0.

0

ec

cee

ee

eee

ene

ere

cent

tenes

eet

een

e

ener

5

5.

AUDIO

ADJUSTMENT

......

0...

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ee

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eee

ee

7

5.1

Voltage

Adjustment

.......

2-0

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ec

et

ee

te

ee

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7

6:

VOLTAGE

CONVERSION

....

06s

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Diagram

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Sears

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8

7.2

Tuner

Board

Schematic

Diagram

and

Component

Location-P100

..

2...

1

ee

eee

9

7.3

Main

Amp/Power

Supply

Board

Schematic

Diagram

and

Component

Locations-P700

..

1.1...

1

eee

ee

eee

11

7.4

Volume/Balance

Board

Schematic

Diagram

and

Component

Locations-PEOO

-...-----

2-2

eee

ee

eet

eee

12

7.5

Tone

Control

Board

Schematic

Diagram

and

Component

Locations-PFO0

...

2... 0...

eee

ee

ees

St

astral

as

aoe

12

7.6

Pushswitch

Board

Schematic

Diagram

and

Component

Locations-PS00.

2...

ee

eet

12

7.7

Headphone

Jack

Board

Schematic

Diagram

and

Component

Locations-PWO0

....

2.2...

1...

e

ee

eee

ee

eee

12

7.8

Speaker

Terminal

Board

Schematic

Diagram

and

Component

Locations-PW50

..

1.2...

cc

ce

ee

ees

13

7.9

Speaker

Switch

Board

Schematic

Diagram

and

Component

Locations-PXO00

........--.2-2

02

eee

ee

13

7.10

Stereo

LED

Board

Schematic

Diagram

and

Component

Locations-PY00

..

2.2...

ee

13

7.11

Dial

Pointer

Lamp

Board

Schematic

Diagram

and

Component

Locations-PZ00

...

1.2.1...

ee

ees

13

7.12

Tuning

Meter

Lamp

Board

Schematic

Diagram

and

Component

Locations-PZ50

2.0...

1...

ce

ee

ees

13

8.

EXPLODED

VIEWS

AND

PARTS

LIST

2.0...

1.

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8:4

(€01299)+

Front

Panels

5.6...

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Chassisand

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TECHNICAL

SPECIFICATIONS

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25

INTRODUCTION

This

service

manual

was

prepared

for

use

by

Authorized

Warranty

Stations

and

contains

service

information

for

Maranz

Model

SR

800

Stereophonic

Receiver.

1.

P.W.

BOARDS

As

can

be

seen

from

the

circuit

diagram

the

chassis

of

Model

SR

800

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

dia-

Servicing

information

and

voltage

data

included

in

this

gram.

manual

are

intended

for

use

by

the

knowledgeable

and

ex-

perienced

technician

only.

All

instructions

should

be

read

1.

Tuner............

mounted

on

P.W.

Board

P100

carefully.

No

attempt

should

be

made

to

proceed

without

a

good

understanding

of

the

operation

of

the

receiver.

2.

Main

Amp/Power

Supply

Se:

Seiad

eee

Fw

eas

mounted

on

P.W.

Board

P700

3.

Volume/Balance.....

mounted

on

P.W.

Board

PEOO

The

parts

list

furnishes

information

by

which

replacement

4.

Tone

Contro!l.......

mounted

on

P.W.

Board

PFOO

parts

may

be

ordered

from

the

Marantz

Company.

A

simple

5.

Pushswitch

........

mounted

on

P.W.

Board

PSOO

description

is

included

for

parts

which

can

usually

be

ob-

6.

Headphone

Jack

.....

mounted

on

P.W.

Board

PWOO

tained

through

local

suppliers.

7.

Speaker

Terminal

....

mounted

on

P.W.

Board

PW50

8.

Speaker

Switch

.....

mounted

on

P.W.

Board

PX00

9.

StereoLED........

mounted

on

P.W.

Board

PYOO

10.

Dial

Pointer

Lamp

.

Mounted

on

P.W.

Board

PZ00

11.

Tuning

Meter

Lamp...

mounted

on

P.W.

Board

PZ50

2.

TEST

EQUIPMENT

REQUIRED

FOR

SERVICING

This

table

lists

the

test

equipment

required

for

servicing

the

Model

SR

800

Receiver.

AM

Signal

Generator

aii

ieee.

Signal

source

for

AM

alignment

EM

Signal

G

Signa!

source

for

FM

alignment

MPX

ane

;

pahaed

Stereo

separation

alignment

and

trouble

Signal

Generator

shooting

Sound

Technology

Model

1000A

Distortion

measurements

Sinewave

and

squarewave

signal

source

Voitage

measurements

(AC)

Distortion

Analyzer

Audio

Oscillator

AC

VTVM

Sound

Technology

Mode!

1700A

Waveform

analysis

and

trouble

shooting

and

ASO

alignment

MPX

Oscillator

adjustment

(VCO)

Trouble

shooting

Tektronix

Model

T932

Philips

Mode!

3232

Fluke

Mode!

1900A

Oscilloscope

Frequency

Counter

Circuit

Tester

Fluke

Model

8000

“‘Digita!’’

Simpson

Mode!

313,

Triplet

Model

801

Simpson

Model

1379

DC

VTVM

Voltage

measurements

(DC)

Monitors

primary

power

to

amplifier

AC

Wattmeter

Monitors

amplifier

output

under

short

circuit

aa

Nttiee

gin

Wane

condition

Line

Voltmeter

Simpson

Model

1359

Sen

iters

potential

OF

poimaly

Rawer.to

amplifier

:

Superior

Electronic

Co.,

Variable

Autotransformer

Powerstat

Model

116B—-10A

Use

phono

plug

with

600-ohm

Shorts

amplifier

input

to

eliminate

noise

across

center

and

shell

pickup

Provides

8-ohm

load

for

amplifier

output

Output

Load

(8

ohms,

:

+0.5%,

100W)

PammereiaOlede

termination

Output

Load

(4

ohms,

:

Provides

4-ohm

load

for

amplifier

output

+0.5%,

100W)

Commercial

Stade

termination

3

Adjusts

level

of

primary

power

to

amplifier

Shorting

Piug

*

A

dummy

resistor

of

47

kohms

must

be

connected

across

the

tape

output

terminals

before

alignment.

3.

FM

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

“FM”

position)

Signa!

Source

Connection

Signal

Frequency

indicator

Connection

Set

Dial

Pointer

to:

Adjust:

3.1

FM

IF

ALIGNMENT

Oscilloscope

to

L106

for

maximum

and

Sweep

generator

to

10.7

MHz

JVO2

(TAPE

OUT)

: }

symmetric

response.

4

market

at

Quiet

point

on

point

()

through

10.6.

10.7

and

nee

.

6,10.7

a

and.

i

5pF

capacitor

FOS

MIE

|

Oscilloscope

to

L201

for

maximum

and

:

|

JVO2

(TAPE

OUT)

symmetric

response.

Repeat

steps

1

and

2.

3.2

FM

RF

ALIGNMENT

i

L105

for

maximum

87.4

MHz

87.4

MHz

with

i

tuning

gang

closed.

Output.

[i

RF

generator

to

.

FM

antenna

108.

2

MHz

108.2

MHz

with

C114

for

maximum

terminals

@®

through

matching

network

VTVM

to

LorR

channel

output

(JVO02)

tuning

gang

open.

output.

L101,

L103

for

(300

ohms,

balanced)

90

MHz

maximum

output.

Maintain

RF

level

oe

below

limit.)

(J036)

Ant.

RF

trimmer

for

106

MHz

Repeat

steps

1

to

4.

maximum

output.

Check

overall

response

curve

and

repeat

above

steps

as

necessary

to

obtain

maximum

sensitivity.

L201

lower

core

for

FM

No

connection

No

signal

~

-_

TENG

terete

pointer

indicated

its

center.

Distortion

meter

to

L201

(primary

core

upper)

L

or

R

channe!

out-

for

minimum

distortion.

FM

generator

1

mV

put

(JVO2)

output

to

FM

antenna

terminals

®

through

98

MHz

98

MHz

matching

network

(300

ohms,

balanced)

(JO36)

3.3

MUTING

CIRCUIT

ALIGNMENT

RF

generator

12.5uV

[R207

for

12.5uV

output

to

FM

antenna

VTVM

to

Rort

threshold

level.

{During

terminals

@

through

98

MHz

channel

output

98

MHz

the

adjustment

turn

matching

network

(JVO2)

the

FM

MUTING

push-

(300

ohms,

balanced)

(JO36)

switch

‘“‘ON").

Signal

Source

Connection

Signal

Frequency

3.4

MULTIPLEX

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

“FM”

and

STEREO/MUTING

position)

Indicator

Connection

Set

Dial

Pointer

to:

Adjust:

RF

generator

to

FM

antenna

terminals

through

matching

network

(300

ohms,

balanced),

with

ImV

FM

stereo

simulator

RE

level

and

100%

modulation

(pilot

9%)

(JO36)

No

modulation

Frequency

counter

to

point

(J301)

R304

so

that

frequency

counter

may

precisely

read

19

kHz.

VTVM

to

right

Stereo,

left

éhannel

ouggur

utpu

1,000

H

Cae)

(JV02)

:

VTVM

to

left

Stereo,

right

channel!

output

(1,000

Hz)

(JVO2)

98

MHz

R313

for

minimum

output

and

same

separation

in

both

channels.

4.

AM

ALIGNMENT

PROCEDURES

(Selector

switch

in

the

‘““MW”

or

‘““LW”

position)

Signal

Source

Connection

Sweep

generator

to

AM

sweep

input,

Signal

Frequency

450

kHz

marker

RF

generator

to

AM

antenna

terminals

through

IHF

dummy.

525

kHz

Indicator

Connection

4.1

AM

IF

ALIGNMENT

Oscilloscope

to

point

©

(JAQ6)

4.2

AM

RF

ALIGNMENT

1,630

kHz

VTVM

to

Lor

R

600

kHz

channel

output

(JV02)

1,400

kHz

Repeat

steps

2

and

3.

Set

Dial

Pointer

to:

Quiet

point

on

band.

520

kHz

with

tuning

gang

closed.

LAOS,

LAO6

for

maxi-

mum

and

symmetric

response.

LAO4

for

maximum

output.

1,630

kHz

with

tuning

gang

open.

O.S.C.

trimmer

for

maximum

output

©.

600

kHz

LO51

for

maximum

output.

1,400

kHz

Ant.

trimmer

for

maximum

output

®.

Repeat

steps

1

to

4

as

necessary

to

obtain

maximum

sensitivity.

Lo51

AM

ANT

coil

™.

@

©

LAOS

COIL

[1

@®

QaAo!

0402

|

LAO6

|

AM

IFT

SS

AM

SWEEP

INPUT

=

@

—

sacs

\

O))

One

commen

tacaparomeen

ced

rc)

FM

osc

\

om

~

Q

(i

O

(DO)

©

LIO6

py

TC4

\

O

[Lona

L

am

osc

ss

—_

\

oe

O&

FM

IFT

(H)

(@)

Tce

ST

\

osc

TC

Sy

@)r3!3

©

eM

Re.

©

'

QD

L302

FM

SEPARATION

~~

|

&

ADs.

ma

oF)

t

—

Q202

©

L103

D

ach

Q301

7

4

TCS

mune

be

i)

L201

2

es)

3002

UPPER:

MONO

DISTORTION

(j

\

——

J301

©

me

LOWER:

TUNING

oe

:

aTAE

P.

i)

(fF)

METER

ADJ

®

R304

R223

Qjrmmutine

()

TC!

§

VCO

take

R235

ADJ.

FM

ANT

Lio

R224

col.

Figure

1.

Adjustment

Point

Locations

Figure

2.

Dial

Stringing

5.

AUDIO

ADJUSTMENT

6.

VOLTAGE

CONVERSION

5.1

VOLTAGE

ADJUSTMENT

To

convert

the

unit

to

a

different

power

source

voltage,

1.

Turn

on

the

POWER

pushswitch

and

connect

a

DC

voit-

change

the

position

as

illustrated

in

the

drawing

below.

meter

across

the

J837

and

J723.

2.

Check

that

DC

voltmeter

reading

is

34

+1

V.

CAUTION:

DISCONNECT

POWER

SUPPLY

CORD

FROM

AC

OUTLET

BEFORE

CONVERTING

VOLTAGE.

DO

NOT

DISASSEMBLE

THE

VOLTAGE

SELECTOR

ABSOLUTELY.

~

”

_——

(N)

Version

(Note

on

safety:

The

parts

marked

with

4

are

important

parts

on

the

safety.

Please

use

the

parts

having

the

designated

parts

numbers

without

fail.)

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

2-Bestimmungen

vorherrschend

sind.

Sollte

das

Gerat

auch

fiir

Frequenzen

auszerhalb

des

in

den

FTZ-Bestimmungen

angegebenen

Bereiches

empfangebereit

sein,

bitten

wir,

den

Bereich

durch

Nachstellen

des

Kernes

in

der

Oszillatorspule

(in

der

Abbildung

mit

“FTZ"

gekennzeichnet)

so

zu

korrigieren,

dass

er

den

Bestimmungen

entspricht.

7.

DIAGRAMS

7.1

BLOCK

DIAGRAM

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