Sony M-527V Manuale utente

SERVICE

MANUAL

Tape

CMICROCASSETTE)™

(normal

position

type)

Recording

system

2-track

1-channel

monaural

Speaker

Approx.

3.6

(1%e

in.)

dia.

Tape

speed

2.4

cm/s

('%e

ips),

1.2

cm/s

ips)

Frequency

range

250

4,000

Output

Earphone

jack

(minijack)

for

300

ohms

earphone

Power

output

160

(at

10%

harmonic

distortion)

Battery

life

(recording)

SONY

SUM-3

(NS)

5.5H

SONY

ALKALINE

AM3

(N)

14H

Power

requirements

Two

(size

AA)

batteries:

Sony

AC-E30M

power

adaptor

(not

supplied):

220

AC,

(European

model)

120/220

AC,

50/60

(model

for

other

countries)

Sony

DCC-E130L

car

battery

cord

(not

supplied):

car

battery

Model

Canadian

Model

AEP

Model

Tourist

Model

VOR

VOICE

GPERATRD

ARCOROING

MICROCARSSET

atta

Model

Name

Using

Similar

Mechanism

NEW

Tape

Transport

Mechanism

Type

MZ-425-14

SPECIFICATIONS

Dimensions

(w/h/d)

Approx.

66.7

120.8

incl.

projecting

parts

and

controls

Mass

Approx.

180

incl.

batteries

Supplied

accessories

Microcassette

tape

MC-30

(1)

(AEP,

UK)

(size

AA)

batteries

(2)

(Tourist)

Carrying

case

(1)

(tourist)

Design

and

specifications

are

subject

change

without

notice.

MICROCASSETTECORDER

SONY.

SERVICING

NOTE

Flexible

Circuit

Board

Repairing

Notes

chip

component

replacement

Keep

the

temperature

the

soldering

iron

around

Never

reuse

disconnected

chip

component.

‘270°C

during

repairing.

Notice

that

the

minus

side

tantalum

capacitor

may

not

touch

the

soldering

iron

the

same

conductor

damaged

heat.

the

circuit

board

(within

times).

careful

not

apply

force

the

conductor

when

soldering

unsoldering.

SECTION

This

section

extracted

from

GENERAL

instruction

manual.

Parts

Identification

EAR

Microphone

FAST

TAPE

im?

tome

PAUSE

CUE/REVIEW

VOR

SECTION

DISASSEMBLY

Note:

the

disassembly

procedure

the

numerical

order

given.

CASSETTE

AND

BATTERY

LIDS

ront

cabinet

(A)

Stop

the

cassette

lid

(B)

halfway.

precision

screwdriver

equivalent

lid

(B)

cassette

lid

(B)

precision

screwdriver

battery

case

lid

CABINET

battery

terminal

(a)

battery

coil

spring

(c)

battery

coil

spring

(b)

B7P1.

Push

knob

(PAUSE-A)

Rae

from

inside

out

side.

cabinet

knob

(PAUSE-A)

knob

(FR)

MECHANISM

DECK

cabinet

(front

speaker

(3.6cm)

knob

spacer

bracket

(microphone)

MZ-425-14

button

(REC)

MIC901

cushion

(microphone)

BTP1.7x3

screw

KNOB

torsion

spring

(toggle)

arm

(EJECT-B)

torsion

spring

(toggle)

Remove

claw

from

inside.

"Se

‘

Remove

claw

from

inside.

knob

(VOR)

ARM

(EJECT)

FITTING

Jif

torsion

spring

Hung

(toggle)

hait.

Put

through

the

hole.

Move

the

spring

twice

three

times.

CASSETTE

LID

(B)

FITTING

cassette

lid

(B)

cassette

lid

(B)

Hold

shaft

pushing

stop

button.

Put

the

stopper

portion

the

hole.

SECTION

ADJUSTMENTS

2-1.

MECHANICAL

ADJUSTMENTS

AND

MEASUREMENT

PRECAUTION

Clean

the

following

parts

with

denatured-alcohol-moistened

swab:

record/playback/erase

head

pinch

roller

rubber

belts

capstan

Demagnetize

the

record/playback

head

with

head

demagentizer.

not

use

magnetized

screwdriver

for

the

adjustments.

The

adjustments

should

performed

with

the

rated

power

supply

voltage

unless

otherwise

noted.

Power

supply

voltage

Vdc

TAPE

SPEED

switch

2.4cm

Torque

Measurement

Tape

Tension

Measurement

Meter

Reading

Torqu

Meter

5~13g

*cm

(0.07

—

0.1800z

inch)

5~13g

*cm

(0.07

—

0.1800z

inch)

CQ-103M

CQ-201M

than

g*cm

(more

than

0.210z

inch)

Meter

Reading

than

CQ-403M

(more

than

0.42

02)

2-2.

ELECTRICAL

ADJUSTMENTS

Test

Tape

[om

[ee

[eee

kHz,

—

Tape

Speed

Adjustment

WS-24

S-2-A030}

kHz,

—

}

Head

Azimuth

Adjustment

Record/Playback

Head

Azimuth

Adjustment

setting:

VOLUME

control

mechanical

mid

TAPE

SPEED

switch

2.4

cm/s

VOR

switch

OFF

Procedure:

Mode:

playback

test

tape

S-2-A030

kHz,

dB)

earphone

jack

Tur

the

adjustment

screw

obtain

the

maximum

reading

VTVM.

Note:

Several

peaks

may

appear,

but

the

maximum.

Adjustment

Location:

First

remove

the

cover

(azimuth).

head

azimuth

adjustment

screw

Tape

Speed

adjustment

Setting:

VOLUME

control

mechanical

mid

VOR

switch

OFF

Procedure:

Reform

2.4

speed

adjustment

before

1.2

cm/s

speed

adjustment

mode

playback

speed

checker

LFM-30

test

tape

WS-24:

tape

speed

2.4

frequency

counter

WS-12:

tape

speed

1.2

kHz,

—

10dB)

earphone

jack

£3%

3,000

Frequency

difference

between

the

beginning

and

the

end

the

tape

should

within

0.5%.

2.4cm/s

(15

Hz)

1.2

cm/s

(15

Hz)

Adjustment

Location:

RV601

1.2c0m

speed

adjustable

resistors

M-527V

SECTION

DIAGRAMS

Semiconductor

Location

4-1.

PRINTED

WIRING

BOARD

Ref.

No.

[Location|

gemiconductor

Lead

Layouts

XN4312

GL-8PR42

10101

H-11

1C601

J-18

1¢701

H-13

Q101

D-10

0102

E-10

0103

F-10

0601

K-19

ANODE

CATHODE

0701

G-14

Q703

J-18

DA204U

0704

L-17

anode,

cathode

anode

cathode

anode

N.C.

18S335

ANODE

CATHODE

—p>{-_—

Note

Schematic

Diagram:

All

capacitors

are

unless

otherwise

noted.

pF:

pyF

less

are

not

indicated

except

for

electrolytics

and

tantalums.

All

resistors

are

and

less

unless

otherwise

specified.

—Ew-+

printed

resistor.

B+

Line.

{__]

panel

designation.

Cc]

adjustment

for

repair.

Total

current

measured

with

cassette

installed.

Power

voltage

and

fed

with

regulated

power

supply

from

external

power

voltage

jack.

Voltages

are

with

respect

ground

under

no-signal

conditions.

mark:

PLAY

(

REC

Voltages

are

taken

with

VOM

(10

MQ/V).

Voltage

variations

may

noted

due

normal

production

tolerances.

Signal

path.

x»

REC

Note

Printed

Wiring

Board:

e®

oO——

parts

extracted

from

the

component

side.

Through

hole.

Pattern

from

the

side

which

enables

seeing.

Pattern

the

rear

side.

[]

printed

resistor

the

rear

side.

@®

“um

[

oe.

Jl02

Oc}

S106

S104

REC

[MAIN

BOARD]

(24en}

[L2en]

J103

DRY

BATTERY

—

SIZE

"AA"

YEL

™_

(IEC

DESIGNATION

R6)

[eal

2pcs

EAKER

vet

RED

M901

MOTOR

RViOj

HEAD

FLEXIBLE

REC/PB

(i)

$103

S105

[vor]

[H]+[cl+

paca!

Block

Diagrams

LA5521M

NJM2072M

vue

INPUT)

Vee

GAIN

CONT)

OUTPUT

AMP

OUT

OUTPUT

(I)}-—(2)

(4)

RECOVERY

GNO

Vee

OUT

TIME

CAP

23>

4-2.

M-527V

SCHEMATIC

DIAGRAM

[

BOARD

}

‘

| :

POWER)

2.4V

2.7V

3.0V

R103

(2.

3V)

fito

R15

C194

220

cud

J102

cae

1.6V

MIC9O1

H-]

oe}

MIC

oIPt!

[

POWER

AMP

TP18

R104

R106

£108

pyigy

DRY

BATTERY

15k

c103

0.038

fe)

Slee

MARE

rye

C107

voy

gre

NINZO7

(IEC

BESIGNATION

R6)

6.01

2PCS

HEAD

$102

B/4)

FLEXIBLE

TBI9

TP4

REC/PB

]}

2108

EAR

HCBS01

(CHASSIS)

sage

SP901

SPEAKER

nal

erase

5103

a704

PSS

25818194

LED

SWITCHING

Mao!

THP6O2

210/72700PPM/*

C127

0,022

TPS

(2.3¥)

ant

V>—H

R125

R124

R126

4.7k

1.5K

2.7K

$104

4/2)

TAPE

SPEED

Q703

2581819A

SERVO

SWITCHING

1701

NJM2072M

VOR

[C701

VOR

1.5K/3900npa/"

NOTE:

-XX

and

-X

mean

standardized

parts,

they

may

have

some

difference

from

the

original

one,

Color

Indication

Appearance

Parts

Example:

KNOB,

BALANCE

(WHITE)...

(RED)

Parts

Color

Cabinet's

Color

SECTION

EXPLODED

VIEWS

Items

marked

“>”

are

not

stocked

since

they

are

seldom

required

for

routine

service.

Some

delay

should

anticipated

when

ordering

these

items.

The

mechanical

parts

with

reference

number

the

exploded

views

are

not

supplied.

Hardware

mark)

list

and

accessories

and

packing

materials

are

given

the

last

the

electrical

parts

list.

(1)

GENERAL

SECTION

Ref.

No.

weoOomn

[—]

Part

No.

3-318-203-51

3-358-363-11

3-914-938-01

3-318-203-72

3-$14-339-01

3-914-3950-01

3-914-930-01

3-831-441-XX

3-914-948-21

3-914-947-01

3~914-946-01

3-914-934-01

3-914-933-01

3-914-932-01

3-914-879-O1

MZ-425-14

Description

Remark

Ref.

Part

No.

SCREW

(B1.

7X12),

TAPPING

X-3368-573-1

PLATE,

BLIND

3-914-931-01

KNOB

(PAUSE-A)

3-914-936-01

SCREW

(B1.

7X5),

TAPPING

X~3368-570-1

KNOB

(FR)

3-914-878-01

LID,

BATTERY

CASE

3-914-952-01

CUSHION

(BATTERY

CASE

LID)

3-914-949-01

SPACER,

KNOB

3-914-937-01

BUTTON

(REC)

3-318-382-31

BUTTON

(PLAY)

A-3016-591-A

BUTTON

(STOP)

3-342-156-51

SPRING

(B),

BATTERY

COIL

3-914-929-01

TERMINAL

(A),

BATTERY

3-914-958-11

SPRING

(C),

BATTERY

COIL

MICS01

1-542-136-11

KNOB

(VOR)

eee

SP901

1-544-657-12

Description

Remark

CABINET

(FRONT)

(A3)

ASSY

SPRING

(TOGGLE),

TORSION

ARM

(EJECT-B)

LID

(BQ)

ASSY,

CASSETTE

KNOB

(F-PB)

COVER

(AZIMUTH)

BRACKET

(MICROPHONE)

CUSHION

(MICROPHONE)

SCREW

(1.

7X3),

TAPPING

MAIN

BOARD,

COMPLETE

SCREW

PAPER,

SHIELD

CABINET

(REAR)

MICROPHONE,

ELECTRET

CONDENSER

SPEAKER

(3.

6CM)

(2)

MECHANISM

SECTION

(MZ-425-14)

Mgo1

—

HCB901

Ref.

No.

Part

No.

Description

Remark

Ref.

No.

Part

No.

Description

Remark

3-704-243-1141

SCREW

(Pi.

7X2.

_3-378-792-01

SPRING,

COMPRESSION

3-914-920-01

PLATE

(FR),

LOCK

3-914-914-01

GUIDE,

TAPE

3-914-919-01

SLIDER

(FR)

3-914-913-01

LEVER

(PLAY)

3-377-420-11

BELT

3-350-945-11

WASHER

X-3368-702-1

FLYWHEEL

(1.3)

ASSY

X-3368-585-1

PINCH

LEVER

ASSY

3-914-903-01

SPRING

(FR),

TORSION

3-914-902-01

SPRING

(P),

TORSION

X-3368-486-1

LEVER

(STOP)

ASSY

3-914-904-01

SPRING

(PFR),

TORSION

3-914-906-01

SPRING

(S.

OFF),

TORSION

3-914-907-01

SPRING

(MIDWAY

GEAR),

TORSION

3-914-915-01

ARM

(S.

OFF)

X-3368-587-1

REEL

ASSY,

X-3368-582-1

REEL

ASSY,

3-914-916-01

ARM

(CKAW

DETECTION)

3-914-923-01

COVER,

3-331-007-21

WASHER

3-366-892-11

SCREW

(M1.

4X1.

X-3368-584-1

ARM

(MIDWAY

GEAR)

ASSY

3-914-908-01

SPRING

(REC

LOCK),

TENSION

X-3368-701-1

CHASSIS

(COMP.)

ASSY

(C),

MECH

X-3368-583-1

LEVER

(REC)

ASSY

HCB901

1-500-135-11

HEAD,

MAGNETIC

(REC/PB/ERASE)

3-703-816-82

SCREW

(M1.

4X6.0),

SPECIAL

HEAD

MSO1

1-698-384-11

MOTOR,

3-704-245-42

SCREW

(P1.

4X3.

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