Akai AP-M50 Bedienungsanleitung

AKAL

service

mnt

FULL

AUTOMATIC

PLAYER

| |

mov.

AP-M50

ABBREVIATIONS

FOR

SERVICE

MANUAL

move.

AP-M50

ABBREVIATIONS

EXPLANATION

ane

Direct

Current

Main

Motor

Arm

Motor

Tracking

Sensor

O/S

Open/Close

Low

(Referring

Voltage)

High

(Referring

Voltage)

LED

Light

Emitting

Diode

Fast

Forward

FWD

ForWarD

REV

;

REVerse

FULL

AUTOMATIC

PLAYER

mopeLA

P-M50

SECTION

SERVICE

MANUAL

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

SECTION

PARTS

LIST

.............2..

222

eee

SERVICE

MANUAL

AP-M50

SAFETY

INSTRUCTIONS

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

[C]

[A],

specified

insulation

resistance

should

than

2.2

Mohms

(ground

terminals,

microphone

jacks,

headphone

jacks.

line-in-out

jacks

etc.)

PRECAUTIONS

DURING

SERVICING

008

SDS

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:

Wires

covered

with

PVC

tubing

Double

insulated

wires

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)

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

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

platter

turn

the

Voltage

Selector

located

the

top

the

cabinet

with

screwdriver

until

the

correct

voltage

indicated.

Models

for

USA,

Canada,

Europe,

and

Australia

are

not

equipped

with

this

facility.

NOTE:

Cycle

conversion

unnecessary

since

AP-M50

use

motors.

—=-

SERVICE

MANUAL

AP-M50

SECTION

SERVICE

MANUAL

TABLE

CONTENTS

SPECIFICATIONS

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

biped

died

MUGS

lens

ptt

Diet

che

eel

edi

tates

il.>.

‘DISMANTEING

UNIT

sieosnct0

oh.

Side

Sassen

teas

ove

aat

eee

wetter

eae

HERS

“CONT

ROU

485

eters

Sore

betes

oat

«Dan

Raceseien

ata

dylan

aoa

cebdarela

esha

deat

IV;

PRINCIPAL

PARTS

LOCATION

(53.53

pavedied

oes

see

here

oie

eee

tiae

nue

We.

ADIUSIMEN

Goa

ciscdas

Pate

dele

keen

Foe

eae

gee

ipa

ORDINARY

MECHANICAL

ADJUSTMENT.......

ciccateansctr

acacia

Set

actsone

wang

ELEVATION

AND

POSITION

ADJUSTMENT

...........

0.0

cece

eee

teen

ence

enes

ARM

OFFSET

VOLTAGE

ADJUSTMENT

(Refer

Fig.

5-2)

.......0.

20sec

eee

cence

eee

ees

TRACKING

SENSOR

SENSITIVITY

ADJUSTMENT

(Refer

Fig.

5-2)

.......

0.00.

sees

eee

MUSIC

INTERVAL

SENSOR

SENSITIVITY

ADJUSTMENT

(Refer

Fig.

5-2)...........-..4.

SPEED

ADJUSTMENT

(Refer

Fig.

5-3)...

ccc

cece

cence

cece

ence

nent

een

eet

enens

LEAD-IN

POSITION

ADJUSTMENT

(Refer

Fig.

5-4)

0.060.000.

cece

eee

eeee

VI.

BOARD

TITLES

AND

IDENTIFICATION

NUMBERS

............0.000

020s

cece

eeeeees

For

basic

adjustments,

measuring

methods,

and

operating

principles,

refer

GENERAL

TECHNICAL

MANUAL.

SERVICE

MANUAL

AP-MS50

Il.

SPECIFICATIONS

TURNTABLE

(PLATTER)

Aluminum

Alloy

Diecast

DRIVE

SYSTEM

‘|

Belt

Drive

MOTOR

EG-Servo

Motor

SPEED

33-1/3

rpm

WOW

FLUTTER

0.04%

RMS)

RUMBLE

70dB

(DIN-B)

TONE

ARM

Static

Balance

Linear

Tracking

Type

EFFECTIVE

ARM

LENGTH

90mm

ARM

LIFTER

Oil

Damped

OVER

HANG

Omm

CARTRIDGE

OUTPUT

VOLTAGE

CHANNEL

SEPARATION

OPTICAL

STYLUS

PRESSURE

2.5mV

+3dB

(at

1kHz)

than

18dB

POWER

REQUIREMENTS

120V,

60Hz

for

USA

Canada

220V,

50Hz

for

Europe

except

240V,

SOHz

for

Australia

110V/120V—220V/240V,

50/60Hz

Convertible

for

other

countries

DIMENSIONS

350(W)

90(H)

x320(D)

(13.8

3.5

12.6

inches)

WEIGHT

3.8kg

(8.4

Ibs)

For

improvement

purposes,

specifications

and

design

are

subject

change

without

notice.

SERVICE

MANUAL

AP-M50

ll.

DISMANTLING

UNIT

BOTTOM

COVER

case

trouble,

etc.

necessitating

dismantling,

please

dismantle

the

order

shown

the

photographs.

Reassemble

reverse

order.

SCREWS

DUST

COVER

RUBBER

SHEET

PLATTER

SCREWS

SERVICE

MANUAL

AP-M50

lil,

CONTROLS

DUST

COVER

TONE

ARM

RUBBER

MAT

)

SPEED

SELECTOR

SENSITIVITY

eral

SELECTOR

————————

—————s—sézaMm

START

CUT

(<==)

BUTTON

POWER

ON/OFF

SWITCH

PROGRAM

DISPLAY

»~rpm

FORWARD

(

<K))

and

RANDOM

PROGRAM

BACKWARD

(

)

BUTTON

PLAY

SYSTEM

BUTTONS

CUE

¥)

BUTTON

SERVICE

MANUAL

AP-MS50

SENSOR

Shey.

IV.

PRINCIPAL

PARTS

LOCATION

OPEN/CLOSE

SWITCH

sw90l

POWER

PCB

PIO4IA5O0ID

SYSTEM

CONTROL

PCB

PIO4IASOIA

MAIN

MOTOR

PCB

SWITCH

(A)

PCB

PIO41A501B

ARM

MOTOR

M902

ARM

MOTOR

PCB

PIO4IASOIM

ARM

POSITION

SENSOR

(TR)

PCB

PIO41ASOIF

ARM

POSITION

SENSOR

(LED)

PCB

PIO41A501G

SERVICE

MANUAL

AP-MSO

MOVING

BASE

PCB

PIO4IASOIK

PLUNGER

SL90]

TRACKING

SENSOR

PCB

PIO41A5OIL

Fig.

4-1

SENSOR

PCB

PIO41C5020

POWER

TRANSFORMER

T90l

APT

-1041~

APT-5-10

[F]

[o]

MOTOR

M9OI

TRANSISTOR

PCB

PIO4IASOIN

PCB

PIO4IA5OIP

SIZE

SENSOR

PCB

P1041D5030

SWITCH

(B)

PCB

PIO41AS5SOIC

Fig.

4-2

ADJUSTMENT

5-1.

ORDINARY

MECHANICAL

ADJUSTMENT

Ordinary

Mechanical

Adjustment

such

Stylus

Pressure,

Overhang

and

Tone

Arm

Height

Adjustment

are

not

necessary

since

this

model

equipped

with

Static-Balance

Linear

Tracking

Tone

Arm.

Stylus

Pressure

pre-adjusted

2.0

grams

the

factory,

and

re-adjustment

not

necessary

normal

conditions.

5-2.

ELEVATION

AND

POSITION

ADJUSTMENT

This

adjustment

not

necessary

unless

the

Elevation

prop

replaced

mis-adjusted.

Hold

the

Tone

Arm

with

the

Moving

Base

Block

and

separate

the

Elevation

Prop

from

the

Tone

Arm.

Then,

bring

the

Elevation

prop

the

Tone

Arm,

and

adjust

the

Elevation

prop

the

Tone

Arm,

and

adjust

the

Elevation

Prop

with

flat

type

screw-driver

the

place

where

the

position

the

notch

(A)

the

Elevation

Prop

coincides

with

the

projection

part

(B)

the

Tone

Arm

shown

Fig.

5-1.

MOVING

BASE

BLK

VR4

VR5

VR2

VR3

CH~I|

CH-2

CH-1

CH-2

DOWN DOWN

MUSIC

INTERVAL

SENSOR

SENSITIVITY

VRI

VRE

TRACKING

SENSOR

SENS

ARM

OFF

-SET

Fig.

5-1

SYSTEM

CONTROL

PCB

PIO4IASOIA

SERVICE

MANUAL

AP-MS50

Fig.

5-2

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