Marantz TT-6000 Manuale utente

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TT-6000

service

manual

2

|

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—

CCT

8000

tote

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drive

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me

oe

MARANTZ

DESIGN

AND

SERVICE

Using

superior

design

and

selected

high

grade

components,

MARANTZ

Company

has

created

the

ultimate

in

stereo

soun

Only

original

MARANTZ

parts

can

insure

that

your

MARANTZ

product

will

continue

to

perform

to

the

specifications

fe

which

it

is

famous.

Parts

for

your

MARANTZ

stereo

are

generally

available

within

72

hours

throughout

the

nation

via

a

toll-free

line

to

ot

National

Parts

Depot

in

California.

The

sales

professionals

who

take

your

call

immediately

refer

to

their

own

desk

top

cor

puter

terminal

and

can

quickly

determine

the

availability

and

price

information

you

require.

If,

for

some

reason,

your

ord

should

exceed

our

available

stock,

we

usually

can

instantly

provide

an

alternate

replacement

part

or

current

delivery

info

mation.

When

the

order

is

placed

and

confirmed,

the

computer

simultaneously

generates

‘‘hard

copy”

orders

at

the

distrib

tion

center.

As

hard

copies

come

directly

from

the

computer

to

the

national

parts

depot,

your

requested

stock

is

assemble

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

par

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).

PWN

>

Direct

consumers

will

be

provided

with

the

current

retail

price

quotation

on

available

parts

in

order

to

advise

them

of

the

co

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

Kamitsurumé

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

Ill,

2

Rue

Louis

Armand

9

London

Road,

203

Max-Planck-Strasse

z

7120

Peronnes-Lez-Binche

92600

Asnieres

Staines

D-6072

Dreieich

1

Belgium

Hauts-de-Seine

Middlesex

West

Germany

7

France

England

Ail

of

the

above

locations

are

fully

equipped

to

take

care

of

your

total

service

needs.

Because

various

countries

have

differi

configuration

requirements,

it

is

necessary

that

you

contact

the

service

facility

in

your

particular

country.

In

the

event

th

there

is

no

service

location

listed

for

your

country,

please

contact

the

nearest

facility

for

the

necessary

assistance.

gids

Mpa

iereeeT

Bee

og

Tce

ted

owe

get

enek

OU

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aria

De

ete

ERE

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itt

INTRODUCTION

This

service

manual

was

prepared

for

use

by

Authorized

Warranty

Stations

and

contains

service

information

for

a

Marantz

Semi-Automatic

Quartz

Lock

TT-6000

Turn-

table.

Service

information

and

voltage

data

included

in

this

manual

are

intended

to

be

used

by

experienced

service

technicians,

knowledgeable

in

Turntable

designs

and

Ser-

vice.

All

instructions

should

be

read

and

no

attempt

to

repair

the

circuits

or

mechanisms

should

be

made

until

complete

operation

is

understood.

The

parts

list

in

this

manual

pertains

to

five

different

areas.

Be

sure

that part

numbers

for

your

respective

area

are

correct

before

parts

orders

are

placed.

A

simple

des-

cription

is

provided

for

parts

which

can

be

purchased

locally

or

through

the

Marantz

Parts

Facilities.

Refer

to

the

Marantz

Design

and

Service

Section

of

this

manual

for

correct

parts

ordering

methods.

TT-6000

SERVICE

MANUAL

CONTENTS

SUBJECT

MARANTZ

DESIGN

AND

SERVICE

.

CARTRIDGE

WIRE

COLOR

CODE

STYLUS

OVERHANG

ADJUSTMENT

STYLUS

TRACKING

FORCE

ADJUSTMENT

TONE

ARM

TRAVEL

ADJUSTMENT

PHOTO

CELL

DETECTION

CIRCUIT

LEAD

IN

ADJUSTMENT

ELEVATION

PLATE

ADJUSTMENT

.

ELECTRONIC

ADJUSTMENT

.

PHASE

LOCK

ADJUSTMENT

WOW

AND

FLUTTER

ADJUSTMENT

CIRCUIT

WAVEFORM

ANALYSIS

TT6000

TROUBLE

SHOOTING

CHART

TT6000

FINAL

ASSEMBLY

.

TT6000

WIRING

DIAGRAM

POWER

SUPPLY

CIRCUIT

BOARD

MOTOR

CONTROL

CIRCUIT

BOARD

SWITCH

CIRCUIT

BOARD

.

SWITCH

LOGIC

CIRCUIT

BOARD

CIRCUIT

VOLTAGE

CHARTS

.

TT6000

ELECTRICAL

SCHEMATIC

.

TT6000

SWITCH

LOGIC

CIRCUIT

SCHEMATIC

.

SWITCH

CIRCUIT

DESCRIPTION

.

AUTOMATIC

RETURN

CIRCUIT

DESCRIPTION

TT6000

MECHANICAL

ASSEMBLY

.

PARTS

LIST

.

TT6000

TECHNICAL

SPECIFICATIONS

PACKAGING

ASSEMBLY

PAGE

Oo

OnNnNN

OD

DN

FP

FF

WW

WWNY

YN

HY

NYDN

ND

=

a

ee)

=

©

©

12-13

14

14

ALIGNMENT

ADJUSTMENTS

This

service

manua!

was

prepared

for

qualified

tech-

nicians

familiar

with

turntable

maintenance

and

align-

ment

procedure.

Review

complete

adjustment

sec-

tions

before

proceeding.

CARTRIDGE

WIRE

COLOR

CODE

Before

installing

a

cartridge

to

the

headshell,

the

wires

should

be

connected

to

the

cartridge.

The

cart-

ridge

or

its

technical

sheet

will

identify

the

con-

nection

pins.

It

may

be

necessary

to

slightly

compress

the

terminal

clips

on

the

headshell

wires

with

your

fingers

to

firm

the

contact

area

to

the

pins.

Below

is

the

|headshell

color

description.

HEADSHELL

WIRES:

Right

Channel

Hot.................-.4--

Red

Right

Channel

Ground..................

Green

Left

Channel

Hot.

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

0.000

e

wees

White

Left

Channel

Ground....................

Blue

After

wire

connections

are

made,

install

the

cartridge

mounting

screws,

provided

with

the

cartridge,

through

the

mounting

slots

and

tighten

firmly

enough

to

hold

the

cartridge

in

place.

Final

adjustments

are

made

after

the

overhang

dimensions

is

adjusted.

A.

STYLUS

OVERHANG

ADJUSTMENT

A

45RPM

adaptor

is

supplied

with

the

TT-6000

turn-

table

that

will

be

used

for

adjusting

the

overhang

dimension,

An

arrow

is

marked

on

the

45RPM

adap-

tor,

and

a

gradient

scale

from

11

through

18.

1.

Place

the

adaptor

on

the

spindle

with

the

arrow

pointing

towards

the

rear

of

the

turn-

table.

The

gradient

scale

will

be

in

the

lower

left

quadrant

when

viewed

from

the

front.

2.

Remove

stylus

protective

cover

and

balance

the

tone

arm.

Place

the

tone

arm

to

the

gradient

scale

and

set

stylus

contact

to

gradi-

ent

17mm

on

the

45RPM

adaptor.

Set

the

cartridge

screws

after

checking

that

the

cart-

ridge

is

parallel

to

the

sides

of

the

headshell.

B.

STYLUS

TRACKING

FORCE

ADJUSTMENT

1.

Remove

the

stylus

protective

cover

and

adjust

the

counterweight

until

the

tone

arm

is

cap-

able

of

being

suspended

in

midair

without

movement.

2.

Set

the

counterweight

dial

to

zero.

3.

Rotate

the

counterweight

towards

the

pivot

point

to

the

manufacturer’s

specified

cart-

ridge

tracking

force.

4.

Adjust

the

anti-skate

control

to

the

same

amount

of

force

as

the

stylus

tracking

force.

TONE

ARM

TRAVEL

ADJUSTMENT

Changing

the

angle

of

the

feed

arm

assemble

deter-

mines

the

speed

of

the

tone

arm

travel.

NOTE:

Care

must

be

excercised

to

maintain

clearance

between

the

feed

arm

assembly

and

the

friction

rubber.

Refer

to

Figure

1.

FEED

ARM

CLEARANCE

FRICTION

RUBBER

FIGURE

1

Moving

the

Feed

Arm

Assembly

clockwise,

when

viewed

from

bottom

of

the

turntable,

slows

the

tone

arm

return

and

counter-clockwise

will

speed

the

return

travel.

Loosen

the

hexagon

set

screw

on

the

feed

arm

assy

(Refer

to

Figure

2)

and

turn

feed

arm

assy

in

increments

of

a

few

degrees

either

clock-wise

(slow),

counter-clockwise

(fast)

until

desired

travel

speed

is

set.

Re-tighten

set

screw

after

checking

clear-

ance

between

the

feed

arm

assy

and

the

friction

rubber

(2mm).

LEAD

-

IN

ADJUSTMENT

yw

ECCENTRIC

PIN

RETURN

ADJUSTMENT

ECCENTRIC

PIN

SELECTOR

ASSEMBLY

FEED

ARM

FIGURE

2

PHOTO

CELL

DETECTION

CIRCUIT

Install

the

tone

arm

in

its

rest

clip

and

turn

the

turntable

on.

Select

33RPM

MODE.

Adjust

voltages

below

in

the

Photo

Cell

Detection

circitit

VR1-D.C.

Voltage

between

Pins

9

and

10-0.2VDC

VR2-D.C.

Voltage

between

Pins

9

and

11-0.65VDC

After

the

tone

arm

travel

and

photo

cell

detection

circuit

is

adjusted

then

the

eccentric

pins

on

the

feed

arm

assy

can

be

used

for

fine

adjustment.

The

return

eccentric

pin

will

adjust

the

tone-arm

speed

return

while

the

Lead-in

eccentric

pin

will

position

the

tone

arm

during

lead

in

to

the

disc.

|

LEAD

IN

ADJUSTMENT

Adjust

disc

lead-in

dimension

by

turning

the

lead-in

eccentric

pin

on

the

feed

arm

assembly.

Turn

eccentric

pin

clockwise

to

adjust

tone

arm

away

from

the

disc

and

turn

counter

clockwise

to

move

the

tone

arm

toward

the

disc.

ELEVATION

PLATE

ADJUSTMENT

Cueing

elevation

of

the

tone

arm

is

adjusted

by

the

cueing

nut

located

in

the

cueing

lift

shaft

on

the

top

of

the

turntable.

Turning

the

cue

nut

clockwise

(viewed

from

the

top

of

the

turntable)

lowers

the

cueing

elevation

height

and

counter-clockwise

incre-

ases

the

elevation

height

of

the

cueing

arm.

‘

alyéh

j

S-

cack

BR

Sad

eae

eae

lsd

adecagedc@e

Ua]

ae

ed

ads

en

Ge

freee

pipet

cath

rahe

[SHEE

cet

Ghote

mo

tasted

ce

a

ag

We

atthe

goatee

2, Og

'

6

oN

Tag

ie

dg

WE

Seas

aie

cg

Pe

ere

ac

ee

eave

alee

Hef

igde

ee

Pee

pibe

es,

Be

caeutingin

cop

dg

dates

LS

ding

Hh

papel

ped

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chai:

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Hgcdy

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TH

ELECTRONIC

ADJUSTMENTS

Follow

alignment

sequence

for

electronic

adjustments

H

below.

A.

Supply

Voltage

Verification

B.

Phase

Lock

Alignment

C.

Wow

and

Flutter

Alignment

SUPPLY

VOLTAGE

Connect

a

digital

voltmeter

to

Power

Supply

Board

Pins

and

verify

DC

voltages.

A.

Pin

17-(Ground)

C.

Pin

15(~—12VDC)

B.

Pin

20-(+12VDC)

OD.

Pin

14-(+5VDC)

PHASE

LOCK

ALIGNMENT

A.

Adjust

crystal

oscillator

VC1

trimmer

by

mon-

itoring

(Pin

13)

IC-3

for:

33RPM

-

22500

+

2

Micro-Secs

(44.44Hz)

45RPM

-

16666

+

2

Micro-Secs

(60.00Hz)

B.

Connect

a

dual

trace

scope

to

(Pin

13)

IC-3

and

(T.P.)

collector

X1.

Superimpose

wave

forms

and

adjust

VR4

and

VR5.

Refer

to

Figures

below.

33RPM

-

14.0

+

0.4

M

Secs.

with

VR4

45RPM

-

11.0

+

0.4

M

Secs.

with

VR5

14.7

0.4

ms

)

1C3-13

T.P.

(33

RPM)

T.P.

(45

RPM)

|

|

11.2.0.4

ms

WOW

AND

FLUTTER

ALIGNMENT

It

is

recommended

to

align

wow

and

flutter circuit

by

both

methods

(meter

alignment),

(scope

alignment)

below.

WOW

AND

FLUTTER

METER

ALIGNMENT

A.

Connect

a

wow/flutter

meter

to

the

amplifier

output

and

adjust

VR1-Motor

Control

Circuit

Board

for

minimum

reading.

B.

Adiust

VR2

and

VR3-Motor

Control

Circuit

Board

alternately

to

minimize

flutter.

WOW

AND

FLUTTER

SCOPE

ALIGNMENT

A.

Connect

a

dual

trace

scope

(Pins

3,

8

Motor

Control

Circuit

Board)

and

superimpose

wave

forms.

Reference

Figures

below.

B.

Adjust

VR1

for

amplitude

and

VR3

and

VR4

for

90°

phase

difference.

NOTE:

The

Turntable

must

be

level

for

all

wow

and

Flutter

adjustments.

{INCORRECT

DRIVE

WAVEFORM

difference

CORRECT

DRIVE

WAVEFORM

90°

PHASE

CIRCUIT

WAVEFORMS

b—a|

33RPM-22.5mSec

45RPM-16.66mSec

COLLECTOR

}-.—____——-om

33RAPM-22.5mSec

45APM-16.66mSec

33RPM-22.5mSec

45RPM-

16.66rmS

ec

PAT

Av

Aes

fe.

IC3-8

—

33RPM-22.5mSec

45RPM-16.66mSec

]

|

|

|

5.0¥

1C3-13

33RPM-22.5mSec

45

RPM-16.66mSec

33RPM-4.0V

45RPM-4.3V

X11,

13

EMITTER

33APM-1I3mSec

45RAPM-83mSec

PINS

4,7

ad

33RPM-113mSec

45RPM-83mSec

Hane

ane

rast

oehmermenmse

sienna:

Medea

age:

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A

oe

HERE

Bata

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eg

REE

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an

ae

eel

ace

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fa

peraatek

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Eee

ite

oh

we

whip

aioe

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bug

A

ht

og

Rigi

gabe

Perdew

ty

:

1

3

Pere

STs

er

ota

ler

ae

cE

HF

PP

Ae

rai

shorty

A

Qa

ee.

EYES

TT-6000

TROUBLE

SHOOTING

CHART

|

PROBLEM

SUSPECTED

AREA

Stylus

Remains

in

One

Groove

1.

Stylus

Tracking

Force

.

Verify

Tone

Arm

Balance

2.

Tone

Arm

Lead

Wire

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