Marantz SUPERSCOPE CRS-2204 Manual de usuario

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UPERSCOPE

INC.

20525

NORDHOFF

STREET

CHATSWORTH,

a™.©

CALIFORNIA

91311-U.S.A.

CRS-2204

SUPERSCOPE

DESIGN

AND

SERVICE

Using

superior

design

and

selected

high

grade

components,

SUPERSCOPE

has

created

the

ultimate

stereo

sound.

Only

original

SUPERSCOPE

parts

can

insure

that

your

SUPERSCOPE

product

will

continue

perform

the

specifications

for

which

it is

famous.

Parts

for

your

SUPERSCOPE

stereo

are

generally

available

within

hours

throughout

the

nation

via

toll-free

line

our

National

Parts

Depot

California.

The

sales

professionals

who

take

your

call

immediately

refer

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,

usually

can

instantly

provide

alternate

replacement

part

current

delivery

infor-

mation.

When

the

order

placed

and

confirmed,

the

computer

simultaneously

generates

“hard

copy”

orders

the

distribution

center.

hard

copies

come

directly

from

the

computer

the

national

parts

depot,

your

requested

stock

assembled

and

prepared

for

shipment

and

placed.on

the

first

available

carrier

for

delivery

you.

ORDERING

PARTS

Phone

orders

will

eliminate

mail

delays,

and

encourage

the

use

this

method.

you

order

mail,

use

SUPERSCOPE

parts

order

forms

which

are

available

from

our

National

Parts

Depot

located

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

supplied

eliminate

delays

processing

your

order:

Complete

address.

Complete

part

numbers.

Complete

description

parts.

Model

number

for

which

payt

required

(indicate

SUPERSCOPE).

Account

number

(for

account

customers

only).

TPWN

Direct

consumers

will

provided

with

the

current

retail

price

quotation

available

parts

order

advise

them

the

cost

the

parts

and

shipping.

OVERSEAS

PARTS

ORDERING

Parts

may

also

ordered

from

the

fo!lowing

overseas

addresses:

CANADA

AUSTRALIA

JAPAN

Superscope

Canada,

Ltd.

Superscope

(Australasia)

Pty.,

Ltd.

Marantz

Japan,

Inc.

3710

Nashua

Drive

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,

Rue

Louis

Armand

London

Road,

203

Max-Planck-Strasse

7120

Peronnes-Lez-Binche

92600

Asnieres

Staines

D-6072

Dreieich

Belgium

Hauts-de-Seine

Middlesex

West

Germany

France

England

All

the

above

locations

are

fully

equipped

take

care

your

total

service

needs.

Because

various

countries

have

differing

configuration

requirements,

it is

necessary

that

you

contact

the

service

facility

your

particular

country.

the

event

that

there

service

location

listed

for

your

country,

please

contact

the

nearest

facility

for

the

necessary

assistance.

SUPERSCOPE.

Bane

Beem

eel

(

ates

CRS-2204

TABLE

CONTENTS

SPECIFICATIONS

«...--

eee

9.6

[POQ3-99]

Flywheel

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

(REATUIRES®

och

eased

teen

eae

data

9.7

[P04-99]

Parts

Assembled

the

Top

DISASSEMBLY

......-.-.

eee

the

Chassis

2...

0.0.0.0

ecu

2.1

Removing

the

Cassette

Compartment

Lid

9.8

[PO5-99]

Parts

Assembled

the

Reverse

2.2

Removing

the

Back

Cover

.........-...

the

Chassis

2.2.2...

002

eee

2.3.

Removing

the

Chassis

.-..........200.

9.9

[(HO1-99]

Packing

Materials............

2.4

Removing

the

Mechanical

Assembly

.....

9.10

Electrical

Parts

List

..............05.

SERVICE

GUIDE

...-.

wee

3.1

Battery

Voltage

.--.--...

eee

cease

3.2

Battery

Polarity

........-......00005

3.3.

Cleaning

the

Heads

.............000,

3.4

Current

Consumption

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

3.5

Voltage

Conversion

for

Version

Only

....

DIAL

STRINGING

................008,

MECHANICAL

ADJUSTMENTS

...........

5.1

Checking

the

Play

Operation

..........

5.2

Adjusting

the

Pause

Timing

...........

5.3

Adjusting

the

Fast

Forward

and

Rewind

Torque

.........2.2000e

eee

5.4

Adjusting

the

Pinch

Roller

Pressure

......

5.5

Adjusting

the

Play

Torque

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

5.6

Adjusting

the

Flywheel

Thrust

.........

5.7.

Positioning

the

Motor

Pulley

..........

5.8

Adjusting

the

Tape

Speed

........-...

ELECTRICAL

ADJUSTINGS

AND

MEASUREMENTS

..----

eee

6.1

Adjusting

the

Playback

Level

-----+--.-

6.2

Adjusting

the

Head

Azimuth

.-..-.+.---

6.3

Adjusting

the

Bias

Current

..-..-..-+--

6.4

Measuring

the

Signal-to-Noise

Ratio

(in

Playback

Mode)

....-.....-2+.-.00-

6.5

Measuring

the

Playback

Frequency

.-.....-

Response

«+--+

seer

eee

rene

nee

6.6

Measuring

the

Combined

Recording

and

Playback

Frequency

Response

.........

6.7.

Adjustingthe

ALC

Level

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

6.8

Measuring

the

Combined

Recording

and

Playback

Level

............2-0008.5

6.9

Measuring

the

Combined

Recording

and

Playback

Distortion..............

6.10

Measuring

the

Combined

Recording

and

Playback

Signal-to-Noise

Ratio

......

6.11

Measuring

the

Erasing

Level

....-......

6.12

Calibrating

the

Meter

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

ALIGNMENT

PROCEDURES

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

7.1.

Alignment

Procedure

....-....---+5

7.2

Stereo

Separation

Alignment

Procedure.

7.3.

Alignment

Procedure...........--

7.4

Alignment

Procedure

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

7.5

Alignment

Procedure

......-.-.-5-

(DIAGRAMS

bos

ante

are

8.1

Level

Diagrams...

eee

ees

8.2.

Block

Diagram

---

eee

8.3.

Schematic

Diagram

------

+--+

ese

ees

8.4

Circuit

Board

Diagram

+--+

sees

EXPLODED

VIEWS

AND

PARTS

LIST

------

9.1

[C01-99]

Front

Case-------

+--+

eee

9.2

[C0O2-99]

Rear

Lid

and

Upper

Case

-------

9.3

[MO1-99]

P.W.

Boards

and

General

Parts .--

9.4

[P01-99]

Operation

Levers

and

Buttons

....

9.5

[P02-99]

Head

Chassis

..----

+--+

eee

CRS-2204

SPECIFICATIONS

GENERAL:

DIMENSIONS

(WxHxD).

.15-7/16

9-3/16

4-15/16

in.

(39.2

23.3

12.5

cm)

WEIGHT

(with

batteries)

tbs.,

02.

(4.2

kg)

POWER

REQUIREMENT

110/220

AC,

Hz,

A.T:

240

AC,

Hz,

Six

‘‘D”’

Size

Batteries

External

NUMBER

SEMICONDUCTORS:

Integrated

Circuits

Field

Effect

Transistors

Light

Emitting

Diodes

TERMINALS:

Microphone

Plug

Type:

Mini

Input

Sensitivity:

0.25

(—72

dB)

Impedance:

4.5

Plug

Type:

Mini

Input

Sensitivity:

(—25

dB)

Impedance:

Plug

Type:

DIN

Input

Sensitivity:

Impedance:

Plug

Type:

DIN

Output

Level:

0.5

(—6

dBV)

Output

Impedance:

2.5

Plug

Type:

Mini

Output

Power

(4.Q)

External

Antennax1....

Input

Impedance:

Stereo

Headphone

Plug

Type:

Phone

Impedance:

External

Input

DIN

Input

DIN

Output

External

Speaker

Inlet

DC9Vx1

Remote

Control

TAPE

RECORDER

SECTION:

Philips

Type

Cassette

Tape

4-Track

Stereo

Bias

Erase

110

Seconds

(C-60)

125

kHz

(—5

dB)

ERASING

SYSTEM

REW/FF

TIME

FREQUENCY

RESPONSE

SIGNAL-TO-NOISE

RATIO

TAPE

SPEED

1-7/8

ips

(4.8

cm/sec)

+3%

Less

than

0.2%

rms

TUNER

SECTION:

CIRCUIT

SYSTEM

4-Band

FM/MW/SW/LW

Superheterodyne

FM:

108

MHz

MW:

525

1605

kHz

SW:

MHz

LW:

150

370

kHz

FM:

10.7

MHz

MW/SW/LW:

455 kHz

FM/SW:

Telescopic

Rod

MW/LW:

Ferrite-rod

FM:

(30

S/N)

MW:

600

uV/m

(20

S/N)

SW:

150

pV/m

(20

S/N)

LW:

900

pV/m

(20

S/N)

SIGNAL-TO-NOISE

RATIO...

FM:

(Input

mV)

MW/SW/LW:

(Input

mV/m)

STEREO

SEPARATION

(Input

mV)

INTERMEDIATE

FREQUENCY

ANTENNA

FEATURES

(1)

Full

Circuits

Construction

Audio

full-line

three-IC

stages

Each

audio

channel

consists

three

ICs:

equalizer

amplifier

having

ALC,

line

amplifier,

and

power

ampli-

fier.

The

power

amplifier

made

SEPP

circuit

that

assures

2.0

output

power

per

channel!

with

source.

The

audio

full-line

illustrated

below.

LINE

POWER

SPK

AMP

3.22

Quadrature-detection

AM/FM

and

The

quadrature

detection,

which

the

same

that

usual

hi-fi

tuners,

provides

quality

tone

with

little

distor-

tion.

The

single

hump

tuning

and

S-curve

alignment

can

accomplished

adjusting

two

points

only,

which

points

the

circuit

are

reduced.

Low-voltage,

PLL

multiplex

stereo

The

present

PLL

(phase-locked

loop)

multiplex

can

run

power

voltage

low

for

the

first

time

the

source

voltage

for

the

tuner

decreased

through

ripple

filter,

while

requires

12-V

power

source

for

good

channel

separation,

for

stable,

wide

sound

field.

Alignment

can

accomplished

very

easily

adjusting

two

semifixed

controls

only

com-

pared

with

inductor

adjustment

circuit.

(2)

Large-Sized,

Speaker

System

;

The

speaker,

the

12-cm

diameter

which

best

this

class

tape

recorder,

produces

lush,

comfortable,

dy-

namic

sound.

(3)

Large-Sized

Tripple

Meter

The

easy-to-read,

large-sized

meter

indicates

battery

voltage

the

tape

playback

operation,

tuning

state

radio

program

reception,

any

recording

operation.

(4)

Matrix

Stereo

System

The

main

signal

mixed

with

the

out-of-phase

signal

which

taken

from

the

other

channel

and

passed

through

filter

having

certain

bandwidth.

This

makes

the

reproduced

sound

far

deeper

and

wider

than

usual,

thus

providing

rather

high

stareophonic

effect.

(5)

Powerful

Output

The

output

power

high

watts,

watts

for

each

channel

4-22

load.

(6)

Variable

Sound

Monitor

recording

radio

program,

the

sound

volume

and

tone

can

freely

changed

without

affecting

the

record-

ing

level.

CRS-2204

(7)

Total

Shut-off

Mechanism

The

tape

automatically

stopped

the

end

the

play-

back,

fast

forward,

even

recording

mode

operation.

(8)

Cue

and

Review

Mechanisms

(9)

One-Touch

Recording

System

Recording

can

made

pressing

the

REC

button

only.

(10)

Large-Sized

Chassis

The

large-sized

chassis

facilitates

easy

adjustment

any

point

when

the

casing

removed.

The

number

screws

are

minimized

and

the

power

transformer,

external

jacks,

meter,

and

similar

devices

are

fit-assembled

that

main-

tenance

and

service

are

very

easy.

CRS-2204

DISASSEMBLY

2.1

REMOVING

THE

CASSETTE

COMPARTMENT

LID

2.3

REMOVING

THE

CHASSIS

While

pressing

the

point

and

the

arrow

direction,

Remove

the

seven

knobs

through

pull

the

lid

toward

shown.

The

lid

will

removed.

TUNING

TONE

(TREBLE)

TONE

(BASS)

BALANCE

1.S

SWITCH

VOLUME

Remove

the

five

screws

through

The

top

escutcheon

(G)

will

removed.

Then

the

chassis

will

removed.

Unplugging

the

speaker

connector

separates

the

front

case

from

the

chassis

body.

NOTE:

The

knobs

the

FUNCTION,

MODE,

and

AFC

switches

should

replaced

after

putting

the

inside

white

cap

the

switch

schafts.

2.2

REMOVING

THE

BACK

COVER

Open

the

battery

compartment

cover

depressing

the

finger

grip

and

pulling

down.

Remove

the

seven

screws

through

Disconnect

the

antenna

lead

connector

and

the

back

cover

will

come

off

the

casing.

REMOVING

THE

MECHANICAL

ASSEMBLY

Remove

the

four

screws

through

Disconnect

the

lead

connector

from

Motor

Switch.

CRS-2204

SERVICE

GUIDE

3.1

BATTERY

VOLTAGE

Many

customers

often

determine

that

the

set

faulty

when

malfunctioning

they

are

not

aware

used-up

battery.

Before

operation,

therefore,

make

certain

that

the

battery

voltage

higher

than

6.75

3.2

BATTERY

POLARITY

the

battery,

particular

care

should

taken

its

polarity

wrong

placing

may

damage

transistors

and

motor.

3.3

CLEANING

THE

HEADS

The

head

slit

contaminated

with

tape

chips

and

powder,

rubber,

dust,

dirt

leads

insufficient

sound

volume

and

tone

deterioration.

Wipe

such

contaminants

off

the

slit

using

soft

cloth

moistened

with

alcohol

carbon

tetrachloride.

3.4

CURRENT

CONSUMPTION

VOLUME

Maximum

Minimum

Maximum

Minimum

*Units

mA.

The

above

values

may

differ

slightly

depending

individual

sets.

Measuring

conditions

(standard

inputs)

Radio

AM:

mV,

400

Hz,

30%

mod.

FM:

mV,

400

Hz,

30%

mod.

Tape

Recorder

Recording:

mV,

kHz

mic

input

Playback:

Test

tape

MTT

112

(333

Hz,

250

nwb/m)

3.5

VOLTAGE

CONVERSION

FOR

VERSION

ONLY

This

unit

may

converted

110

operation

the

Voltage

Selector

Switch

(S002)

Located

within

the

Bat-

tery

Compartment.

MECHANICAL

ADJUSTMENTS

CRS-2204

PRECAUTIONS:

Prior

any

adjustments,

clean

the

head

slits

with

soft

cloth

cotton

swab

moistened

with

denatured

alcohol

carbon

tetrachloride,

and

fully

demagnetize

the

head,

capstan

and

similar

parts.

5.1

CHECKING

THE

PLAY

OPERATION

5.1.1

CHECKING

THE

PLAY

TIMING

normal

that

when

the

PLAY

pushbutton

depress-

ed,

the

take-up

reel

table

turns

first,

then

the

pinch

rol-

ler

rotated.

The

reel

table

and

pinch

roller

must

not

start

turning

the

same

time.

NOTE:

Make

certain

that

such

subsequent

operation

mode

irrespective

locking

state

depressed

slowly

without

the

tape.

Slowly

depress

the

PLAY

pushbutton,

and

the

take-up

reel

table

will

start

turning.

that

time,

check

make

certain

that

clearance

between

the

pinch

roller

and

capstan

less

than

0.5

mm.

5.2

ADJUSTING

THE

PAUSE

TIMING

Set

the

recorder

the

playback

mode.

Depress

the

PAUSE

pushbutton

slowly,

and

the

take-up

reel

will

pause.

that

time,

check

ensure

that

clearance

be-

tween

the

pinch

roller

and

ranges

from

0.2

0.5

mm.

out

the range,

adjust

bending

angle

the

pinch

roller

bracket

arm

(part

A).

NOTE:

increase

clearance

between

the

pinch

roller

and

capstan,

decrease

the

angle

{in

the

direction

C).

de-

crease

the

clearance,

increase

the

angle

(in

the

direction

B).

5.3

ADJUSTING

THE

FAST

FORWARD

AND

REWIND

TORQUE

Set

the

extended

parts

the

figure)

the

torque

adjustment

leaf

spring

the

figure)

the

FF/REW

idler

any

one

three

stepping

parts

the

idler.

NOTE:

increase

torque,

set

the

extended

parts

the

step-

ping

part

“INCREASE”

and

decrease

it,

set

those

the

stepping

part

“DECREASE”.

Adjusting

range:

110

g-cm

5.1.2

ADJUSTING

THE

PLAY

TIMING

out

specification,

bend

the

part

the

pinch

roller

bracket

which

faces

the

head

chassis

stopper.

the

figure

shown,

bend

the

part

the

direction

de-

crease

the

clearance.

increase

the

clearance,

bend

the

part

the

direction

0.2~0.5mm

CAPSTAN

SHAFT

PINCH

ROLLER

HEAD

CHASSIS

STOPPER

NOTE:

After

adjustment,

check

sure

that

the

pinch

roller

bracket

does

not

contact

the

head

chassis

stopper

PLAY

mode.

INCREASE

DECREASE

—ti

ILIA

CRS-2204

5.4

ADJUSTING

THE

PINCH

ROLLER

PRESSURE

Measure

the

pressure

the

pinch

roller

using

gauge

shown.

For

measurement,

draw

the

pinch

roller

the

arrow

direction

which

detached

from

the

capstan

shaft

and

gradually

return

toward

the

capstan.

Read

the

gauge

the

time

when

the

pinch

roller

starts

turning.

The

standard

pressure

30050

the

pressure

out

the

range,

bend

the

pinch

roller

spring

aroung

the

point

the

direction

5.5

ADJUSTING

THE

PLAY

TORQUE

Mount

the

extended

parts

(two)

the

disc

leaf

spring

any

one

the

stepping

parts

the

idler.

Adjusting

range:

g.cm

NOTES:

(1)

increase

torque,

mount

the

extended

parts

“INCREASE”

and

decrease

torque,

mount

them

“DECREASE”.

(2)

Check

the

take-up

clutch

for

slipping.

When

the

reel

base

paused,

the

wheel

must

smoothly

rotate.

The

wheel,

when

irregularly

rotating

stopping,

not

ac-

ceptable.

5.6

ADJUSTING

THE

FLYWHEEL

THRUST

Adjust

the

thrust

screw

the

flywheel

bracket

until

the

clearance

between

the

capstan

tail

end and

thrust

bear-

ing

0.1

0.3

shown,

using

phillips

screw

driver.

For

adjusting,

feel

axial

dropping

the

fly-

wheel

for

proper

clearance

this

cannot

been

seen

through.

Then

paint

the

screw

lock.

.———

——

Hl!

SSS

NOTE:

make

the

pressure

strong,

bend

the

direction

make

the

pressure

weak,

bend

the

direction

INCREASE

DECREASE

2227s)

ADJUSTING

SCREW

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