Sony M-627V - Microcassette Recorder Bedienungsanleitung

SERVICE

MANUAL

Tape

GIEROCASSETTE™

(normal

position

type)

Recording

system

2-track

1-channel

monaural

Speaker

Approx.

3.6

(176

in.)

dia.

Tape

speed

2.4

cm/s

('%6

ips),

1.2

cm/s

('%z2

ips)

Frequency

range

250

—

4,000

Input

Microphone

input

jack

(minijack/PLUG

POWER)

sensitivity

0.24

for

kilohms

lower

impedance

microphone

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-E30L

power

adaptor

(not

supplied):

120

AC,

*Sony

DCC-E130L

car

battery

cord

(not

supplied):

car

battery

M-

MIGROCABSETTE

thd

SPECIFICATIONS

Model

Name

Using

Similar

Mechanism

Tape

Transport

Mechanism

Type

M-627V/671V

Model

Canadian

Mode!

M-627V/677V

AEP

Model

M-627V

Photo:

M-627V

MZ-627V-14

Dimensions

(w/h/d)

Approx,

66.7

120.8

(2%

4’

in.)

incl.

projecting

parts

and

controls

Mass

Approx.

180

(6.4

0z)

incl.

batteries

Supplied

accessories

power

adaptor

(1,

M-677V

only)

Battery

charge

adaptor

(1,

M-677V

only)

Rechargeable

batteries

(2,

M-677V

only)

Microcassette

tape

MC-30

(1,

M-627V

AEP

only)

Carrying

case

(1,

M-627V

AEP

only)

(size

AA)

batteries

(2,

M-627V

AEP

only)

Design

and

specifications

are

subject

change

without

notice.

MICROCASSETTE*CORDER

SONY.

SERVICING

NOTE

Flexible

Circuit

Board

Repairing

Keep

the

temperature

the

soldering

iron

around

270°C

during

repairing.

not

touch

the

soldering

iron

the

same

conductor

the

circuit

board

(within

times).

careful

not

apply

force

the

conductor

when

soldering

unsoldering.

Notes

chip

component

replacement

Never

reuse

disconnected

chip

component.

Notice

that

the

minus

side

tantalum

capacitor

may

damaged

heat.

SECTION

GENERAL

Parts

Identification

COUNTER

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

MARK

DOTTED

LINE

WITH

MARK

THE

SCHEMATIC

DIAGRAMS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUB-

LISHED

SONY.

ATTENTION

COMPOSANT

AYANT

RAPPORT

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

MARQUE

SUR

LES

DIAGRAMMES

SCHEMATIQUES

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

SECURITE

FONCTIONNEMENT.

REMPLACER

CES

COM-

POSANTS

QUE

PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

MANUEL

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

—

This

section

extracted

from

instruction

manual.

MIC

(PLUG

POWER)

Microphone

REC/BATT

atte

PAUSE

CUE/REVIEW

VOR

SECTION

DISASSEMBLY

Note:

the

disassembly

procedure

the

numerical

order

given.

CASSETTE

AND

BATTERY

LIDS

front

cabinet

(B)

Stop

the

cassette

lid

(B)

halfway.

lid

(B)

precision

screwdriver

cassette

lid

(B)

equivalent

precision

screwdriver

equivalent

battery

case

lid

battery

case

lid

CABINET

battery

terminal

(a)

battery

coil

spring

(c)

battery

coil

spring

(b)

BTP1.7x

Push

knob

(PAUSE-A)

from

inside

out

side.

cabinet

(rear)

MECHANISM

DECK

cabinet

(front

speaker

(3.6cm)

bracket

(microphone)

MZ-627V-14

button

(REC)

button

(PLAY)

SAP

“ew

MIC301

cushion

(microphone)

BTP1.7

NAC

screw

KNOB

torsion

spring

(toggle)

arm

(EJECT-B)

torsion

spring

(toggle)

Remove

claw

from

inside.

ARM

(EJECT-B)

FITTING

arm

(EJECT-B)

torsion

spring

Hung

(toggle)

shaft,

the

hole.

Move

the

spring

twice

three

times.

CASSETTE

LID

(B)

FITTING

cassette

lid

(B)

Hold

shaft

pushing

stop

button.

cassette

lid

(B)

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

5~13g

(0.07

—

0.18002

inch)

COM

Tape

Tension

Measurement

COQ-403M

than

(more

than

0.42

0z)

2-2.

ELECTRICAL

ADJUSTMENTS

Test

Tape

3kHz,

10dB|

Tape

Speed

Adjustment

S-2-A030!

kHz,

—

Head

Azimuth

Adjustment

Record/Playback

Head

Azimuth

Adjustment

5~13g

°cm

(0.07

—

0.1800z

inch)

than

(more

than

0.210z

inch)

setting:

VOLUME

control

mechanical

mid

TAPE

SPEED

switch

2.4cm/s

VOR

switch

OFF

Procedure:

Mode:

playback

test

tape

$-2-A030

kHz,

—

dB)

earphone

jack

Turn

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

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

1.2cm

speed

adjustable

resistors

M-627V/677V

SECTION

DIAGRAMS

Semiconductor

Lead

Layouts

4-1.

PRINTED

WIRING

BOARD

Location

ale

cee

“4

€@

XN4312

GL-8PR42

Ji02

Location

XN4601

SBN

E-12

—_

E-13

0-17

Bigs

$104

K-5

TAPE

SPEED

[2.4em]

—>[i.2cm]

H-11

{MAIN

BOARD]

1-18

weer

G-13

J103

3 F

[EAR]

D-1

ANODE

CATHODE

E-10

DRY

BATTERY

F~11

“=

tige

DESIGNATION

R6)

K-17

DA204U

YEL

2pcs

K-19

|_|

SP90I

G-14

SPEAKER

aoe

L-18

anode,

cathode

anode

J-19

JO!

cathode

Mic

ha:

anode

N.C.

(PLUG

POWER)

188335

RED

MIC9Ol

MIC

ANODE

;

CATHODE

;

RVLOL

HEAD

Note

Schematic

Diagram:

FLEXIBLE

All

capacitors

are

unless

otherwise

noted.

pF:

ppF

less

are

not

indicated

except

for

electrolytics

and

tantalums.

REC/PB

All

resistors

are

and

less

unless

otherwise

specified.

ewe

printed

resistor.

ERASE

B+

Line.

[{]:

panel

designation.

[(——]

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

Block

Diagrams

Voltages

are

taken

with

VOM

(10

MQ/V).

Voltage

variations

may

noted

due

normal

production

LA5521M

NJM2072M

tolerances,

GND

Signal

path.

CONT

INPUT

(1)

(8)

Vee

(8)—{7)—6)—)

>>):

REC

Note

Printed

Wiring

Board:

o————

parts

extracted

from

the

component

side.

Through

hole.

Pattern

from

the

side

which

enables

seeing.

®----@

;

Pattern

the

rear

side.

printed

resistor

the

rear

side.

C2)

Veco

OUT

GAIN

CONT)

()

(7)

OUTPUT

AMP

OUT

(6)

OUTPUT

RECOVERY

GNO@)

SO)

TIME

CAP

SCHEMATIC

DIAGRAM

MICSO}t

MIC

Ji0t

lesa

once

lesa

once

POWER)

eee

QI01,

102

PRE

AMP

$101

TP2

(POWER)

3.0V

POWER

AMP

IC101

NJM2073M

POWER

5102

G/4)

PB—REC

TP1O

1C101

ear}

PB=<—

SWITCHING

TPS

$106

$104

1/2)

TAPE

SPEED

-4cm|-—[1.2cn]

25818194

C701

1€701

vet

0.047

NJM2072¢

SERVO

4.7k

B®)

VOR

SWITCHING

R701

10k

1C701

RV&01,

602

TP36,

SPEED

ADJ

meee

R703

fe]

$104

(2/2)

—

MOTOR

SERVO

TAPE

SPEED

[1.

2cn]+——>[2.

4cn|

es,

M-627V/677V

BRY

BATTERY

SIZE

"AA"

{IEC

BESEGNATION

R&}

(2PCS

3V)

roy

(CHASSIS)

5P901

™

SPEAKER

TP7

SaEN

MSOI

MOTOR

NOTE:

-XX

and

-X

mean

standardized

parts,

they

may

have

some

difference

from

the

original

one.

Color

Indication

Example:

KNOB,

BALANCE

(WHITE)...

(RED)

Cabinet’s

Color

Appearance

Parts

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

Part

No.

3-318-203-51

3-358-363-11

3~914-938-01

3-318-203-72

3-914-939-01

3-$814-950-01

3-914-930-01

3-831-441-XX

3-914-948-11

3-914-947-11

3-914~-946-11

3-328-318-11

3-669-481-07

3-914-934-01

3-914-933-01

3-914-932-01

3-$14-879-01

SP901

Description

Remark

Ref.

No.

Part

No.

SCREW

(B1.

7X12),

TAPPING

X-3368-579-1

PLATE,

BLIND

3-914-931-01

KNOB

(PAUSE-~A)

(PAUSE)

3-914-936-01

SCREW

(B1.

7X5),

TAPPING

X-3368-568-1

KNOB

(FR)

X-3368-576-1

LID,

BATTERY

CASE

3-914-878-01

CUSHION

(BATTERY

CASE

LID)

3-914-952-01

SPACER,

KNOB

3-$14-949-01

BUTTON

(REC)

3-914-937-01

BUTTON

(PLAY)

3-318-382-31

BUTTON

(STOP)

A-3016-592-A

STRAP,

HAND

3-342-156-51

(DIA.

1X10),

PARALLEL

3-914-929-01

SPRING

(B),

BATTERY

COIL

3-914-S$58-21

TERMINAL

(A),

BATTERY

SPRING

(C),

KNOB

(VOR)

BATTERY

COIL

—11—-—

MICS01

1-542-136-11

SP901

1-544-657-12

Remark

Description

CABINET

(FRONT)

(B3)

ASSY

SPRING

(TOGGLE),

TORSION

ARM

(EJECT-B)

LID

(B2)

ASSY,

CASSETTE

(M-677V)

LID

(B1)

ASSY,

CASSETTE

(M-627V)

KNOB

(F-PB)

(FAST

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-627V-14)

Ref.

No.

M901

Part

No.

Description

Remark

3-704-243-11

SCREW

(P1.

7X2.

3-914-920-01

PLATE

(FR),

LOCK

3-914-919-01

SLIDER

(FR)

3-377-420-11

BELT

X-3368-702-1

FLYWHEEL

(1.3)

ASSY

3-914-903-01

SPRING

(FR),

TORSION

X-3368-486-1

LEVER

(STOP)

ASSY

3-914-906-01

SPRING

(S.

OFF),

TORSION

3-914-915-01

ARM

(S.

OFF)

X-3368-582-1

REEL

ASSY,

3-343-948-01

BELT

1-548-579-21

COUNTER,

TAPE

(SMALL

TYPE)

3-914-923-01

COVER,

3-366-892-11

SCREW

(M1.

4X1.

3-914-908-01

SPRING

(REC

LOCK),

TENSION

X-3368-583-1

LEVER

(REC)

ASSY

3-703-816-82

SCREW

(M1.

4X6.0),

SPECIAL

HEAD

Ref.

No.

HCBS01

ad.

Part

No.

Description

Remark

HCB901

M901

3-704-245-42

SCREW

(P1.

4X3.

3-378-792-01

SPRING,

COMPRESSION

3-914-914-01

GUIDE,

TAPE

3-914-913-01

LEVER

(PLAY)

X-3368-585-1

PINCH

LEVER

ASSY

3-350-945-11

WASHER

3-914-902-01

SPRING

(P),

TORSION

3-914-904-01

SPRING

(PFR),

TORSION

X-3368-584-1

ARM

(MIDWAY

GEAR)

ASSY

3-331-007-21

WASHER

3-914-916-01

ARM

(CKAW

DETECTION)

X~3368-587-1

REEL

ASSY,

3-914-907-01

SPRING

(MIDWAY

GEAR),

TORSION

X-3368-701-1

CHASSIS

(COMP.)

ASSY

(C),

MECH

1-500-135-11

HEAD,

MAGNETIC

(REC/PB/ERASE)

1-698-384-11

MOTOR,

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