Akai AP-M77 Bedienungsanleitung

START

CUT

—

-a5—_—

Fwo

swo

AUTOMATIC.

PLAVER,

AP-M77

FULL

AUTOMATIC

PLAYER.

move.

AP=M77

ABBREVIATIONS

FOR

SERVICE

MANUAL

MODEL

M77

ABBREVIATION

EXPLANATION

“|

AD3Just,

ADJustment

A.M

Arm

Motor

BWD-

BackWarD

;

ae)

CD:

Compact

Disc

DAD

Digital

Audio

Disc

‘Decimal

point

—

FWD

FoWarD

“H”

High

(Refferring

voltage)

‘

IPLS

Instant

Program

Locating

System

ies

Low

(Referring

voltage)

LED

Light

Emitting

Diode

MI-COM

MIcroCOMputer

MM.

Main

Motor

PCB

Printed

Circuit

Board

PTR

;

Photo

TRansistor

RPPS

Random

Program

Play

System

SENS

SENSor,

SENSitivity

S.M

Slide

Motor

SWitch

SYS-CON

SYStem

CONtrol

mere

Variable

Resistor

_—™

FULL

AUTOMATIC

PLAYER

wove.

AP-M77

SECTION

SERVICE

MANUAL

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

SECTION

PARTS:

LIST

24230440033

can

Gow

cae

SAFETY

INSTRUCTIONS

OOO

SAFETY

CHECK

AFTER

SERVICING

Confirm

the

specified

insulation

resistance

between

power

cord

plug

prongs

and

externally

exposed

parts

the

set

greater

than

Mohms,

but

for

equipment

with

external

antenna

terminals

(tuner,

receiver,

etc.)

and

intended

for

[A],

specified

insulation

resistance

should

than

2.2

Mohms

(ground

terminals,

microphone

jacks,

headphone

jacks.

line-in-out

jacks

etc.)

PRECAUTIONS

DURING

SERVICING

Parts

identified

the

symbol

parts

are

critical

for

safety.

Replace

only

with

parts

number

specified.

addition

safety,

other

parts

and

assemblies

are

specified

for

conformance

with

such

regulations

those

applying

spurious

radiation.

These

must

also

replaced

only

with

specified

replacements.

Examples:

converters,

tuner

units,

antenna

selector

switches,

cables,

noise

blocking

capacitors,

noise

blocking

filters,

etc.

Use

specified

internal

wiring.

Note

especially:

1).

Wires

covered

with

PVC

tubing

‘2)

Double

insulated

wires

3).

High

voltage

leads

Use

specified

insulating

materials

for

hazardous

live

parts.

Note

especially:

“Insulation

Tape

PVC

tubing

Spacers

(Insulating

Barriers)

Insulation

sheets

for

transistors

Plastic

screws

for

fixing

microswitch

(especially

turntable)

oat

When

replacing

primary

side

components

(transformers,

power

cords,

noise

blocking

capacitors,

etc.),

wrap

ends

wires

securely

about

the

terminals

before

soldering.

Observe

that

wires

not

contact

heat

producing

parts

(heatsinks,

oxide

metal

film

resistors,

fusible

resistors,

etc.).

Check

that

replaced

wires

not

contact

sharp

edged

pointed

parts.

Also

check

areas

surrounding

repaired

locations.

Use

care

that

foreign

objects

(screws,

solder

droplets,

etc.)

not

remain

inside

the

set.

VOLTAGE

CONVERSION

Each

machine

preset

the

factory

according

its

destination,

but

some

machines

can

set

110V—120V

220V-—-240V

required.

your

machine’s

voltage

can

converted:

Before

connecting

the

power

cord

assembling

the

melee

edb

AC110-120V

platter,

turn

the

Voltage

Selector

located

the

top

SETTING

VOLTAGE

the

cabinet

with

screwdriver

until

the

correct

voltage

indicated.

Models

for

Japan,

USA,

Europe,

and

Australia

are

not

equipped

with

this

facility.

NOTE:

Cycle

conversion

unnecessary

since

this

model

employs

motors.

VII.

SECTION

SERVICE

MANUAL

TABLE

CONTENTS

SPECIFICATIONS

0...

ice

ete

eet

nee

scene

DISMANTLING

UNIT

0.0.0...

ccc

eee

CONTROES

50555

esraiend

ese

Sens

cca

nels

Geka

Botan

PRINCIPAL

PARTS

LOCATION

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

0.00000

cece

eens

DESCRIPTION

MISCELLANEOUS

OPERATIONS

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

5-1

OUTLINE

AP-M77

FUNCTIONS................0000055

5-2

SPECIFICATION

VARIOUS

KEY

OPERATIONS

...........

5-3.

SPECIFICATION

VARIOUS

LEDS

...............0.....

SPECIFICATION

COMMON

BUS

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

5-5

TIMING

VARIOUS

OPERATIONS

..............0..0005

ADJUSTMENTS:

oii

G20

6001

wane

Pare

Sid

lee

aed

inl

Clee

pce

6-1

ORDINARY

MECHANICAL

ADJUSTMENTS

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

6-2

ELEVATION

ARM

POSITION

ADJUSTMENT.................

6-3

POSITION

SENSOR

SENSITIVITY

ADJUSTMENT

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

6-4

OFF-SET

VOLTAGE

ADJUSTMENT...................0005

6-5

TRACKING

SENSOR

SENSITIVITY

ADJUSTMENT

...........

6-6

MUSIC

INTERVAL

SENSOR

SENSITIVITY

ADJUSTMENT

......

6-7

SPEED

ADJUSTMENT..................

“dh

gdh

Mifesiungs

Mace

once

6-8

LEAD-IN

POSITION

ADJUSTMENT

..........0.........000.

6-9

PLAY

(SW902)

POSITION

ADJUSTMENT

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

6-10

CHASSIS

(FOR

SW:

SW2

LIMIT

PCB)

POSITION

ADJUSTMENT.......

P.C

BOARD

TITLES

AND

IDENTIFICATION

NUMBERS

...........

For

basic

adjustments,

measuring

methods,

and

operating

principles,

refer

GENERAL

TECHNICAL

MANUAL.

SERVICE

MANUAL

AP-M77

SPECIFICATIONS

TURNTABLE

(PLATTER)

Aluminum

alloy

diecast

DRIVE

SYSTEM

Belt

drive

full

automatic

MOTOR

servo

motor

SPEED

33-1/3

rpm

WOW

FLUTTER

0.04%

(WRMS)

RUMBLE

(DIN-B)

TONEARM

Linear

tracking

dynamic

balanced

type

EFFECTIVE

ARM

LENGTH

ARM

LIFTER

Oil

damped

OVER

HANG

0mm

CARTRIDGE

;

type

OUTPUT

VOLTAGE

3.5mV

CHANNEL

SEPARATION

STYLUS

RS-77

OPTIMAL

STYLUS

PRESSURE

1.25

(Pre-adjusted)

POWER

REQUIREMENTS

POWER

CONSUMPTION

DIMENSIONS

WEIGHT

100V,

50/60

for

Japan

120V,

for

USA

Canada

220V,

for

Europe

except

240V,

for

Australia

110—120V/220—240V,

50/60

switchable

for

other

countries

15W

(A,

Models)

350(W)

115(H)

250(D)

(13.8

4.5

9.8

inches)

6.7

(14.7

Ibs)

For

improvement

purposes,

specifications

and

design

are

subject

change

without

notice.

SERVICE

MANUAL

AP-M77

iH.

DISMANTLING

UNIT

case

trouble,

etc.

necessitating

dismantling,

please

dismantle

the

order

shown

the

photographs.

Reassemble

reverse

order.

PULL

All

the

adjustments

can

accomplished

within

MAIN

MOTOR

COVER

the

steps.

UNPLUG

FOUR

CONNECTORS

UPPER

CHASSIS

BLOCK

AUDIO

PCB

STYLUS.

CHANGE

PLATE

PLATTER

DRIVE

BELT

SCREWS

RUBBER

SHEET

UNSCREW

FROM

OTHERSIDE

BOTTOM

HOLDER

SCREWS

UPPER COVER

SCREWS

‘SERVICE

MANUAL

AP-M77

ill.

CONTROLS

Fig.

3-1

RANOOM

PROGRAM

PLAY

eYSTem

Ooo

ARM

UFTER

Fig.

3-2

MAIN

MOTOR

COVER

ARM

LIFTER

BUTTON

CRANK

DISK

(RECORD

SENSING

PIN)

(¥),

DOWN

(W)

SPEED

33/AUTO/45

SELECTOR

10.

FWD

(<#4),

BWD

(be)

BUTTONS

SENSOR

SENSITIVITY

LOW/MID/HIGH

SELECTOR

W/IPLS

FUNCTION

STYLUS

CHANGE

PLATE

11.

POWER

ON/OFF

SWITCH

DOOR

(CABINET)

OPEN/CLOSE

BUTTON

12.

PROGRAM

DISPLAY

START

(<@)/CUT

(=m)

BUTTON

13.

INTRO

SCAN.

INDICATOR

RANDOM

PROGRAM

PLAY

SYSTEM

BUTTONS

14.

SPEED

33/45

INDICATORS

INTRO

SCAN,

PROGRAM,

CLEAR,

1~7

(PROGRAM)

SERVICE

MANUAL

AP-M77——————_____"-

eee

iV.

PRINCIPAL

PARTS

LOCATION

9°90

NUS

BELT

(1.2

D26)

ARM

MOTOR

MMN-5C2RG

(M901)

REST

PCB

P1035A501L

SYNCHRO

BELT

POSITION

SENSOR

(LED)

PCB

P1035A501G

LEAD-IN

POSITION

ADJUSTER

POSITION

SENSOR

(PTR)

PCB

P1035A501H

RELAY

PCB

P1035A501F

AUDIO

PCB

P1035A501B

STYLUS

PRESSURE

FINE-ADJUSTER

11.

12.

13.

14.

15.

16.

17.

SERVICE

MANUAL

AP-M77

Fig.4-1

Top

View

PLUNGER

SOLENOID

(SL901)

TRACKING

PCB

P1035A501P

PHOTO

SENSOR

(PH1)

FOR

MUSIC

INTERVAL

DETECTION

SENSOR

SENSITIVITY

LOW/MID/HIGH

SELECTOR

(SW1)

SPEED

45/AUTO/33

SELECTOR

(SW2)

MAIN

MOTOR

BLOCK

MMI-5P2R

(M903)

REST

POSITION

(SW1)

wig

hes

PpowoenN>r

FoS

>So)

POS

OUR

ee.

(iy

fay

IND

PCB

P1035A501M

PROGRAM

IND

PCB

P1035A501K

MAIN

MOTOR

BLK

(M903)

MMI-5P2R

KEY

BOARD

(B)

PCB

P1035A501E

KEY

BOARD

(A)

PCB

P1035A5010

SLIDE

PCB

P1035A501N

SYSTEM

CONTROL

PCB

P1035A501A

(sw2)

LIMIT

PCB

P1035A501J

OPEN

(sw1)

AUDIO

PCB

P1035A501B

PLAY

POSITION

(SW902)

POWER

SUPPLY

PCB

P1035A501C.

SYNCHRO

BELT

15.

16.

17.

18.

19.

20.

SERVICE

MANUAL

AP-M77

Fig.

4-2

Inside

View

POWER

TRANS

(7901)

APT-77-10

([J]

MODEL)

APT-77-20

((a]

MODEL)

APT-77-30

([C]

MODEL)

APT-77-40

({E]

MODEL)

APT-77-50

([B]

[S]

MODELS)

APT-77-70

({U]

MODEL)

VOLTAGE

SELECTOR

(SW901)

MODEL

ONLY

GEAR

BLOCK

SLIDE

MOTOR

MMN-5C2R

(M902)

WIND

BELT

SLIDE

MOTOR

BELT

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