Sanyo M-G12 Manuale utente

SERVICE

MANUAL

STEREO

CASSETTE

RECORDER

Power

Source

DOS

Det

het

hepsi

eethate

dye

Anakaaciave

(UM-3,

Cell,

Mignonzelle,

Output

Power

.......0.0000.c

ccc

cece

30mW

(Max.)

Current

Consumption

(at

Vol.

Min.)

Playback

mode

...................0.0005.

140mA

Fast

Forward/Rewind

mode............

170mA

Tape

Speed

2.0.0.0...

cece

ees

1-7/8ips.+

Fast

Forward/Rewind

Time

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

160sec.

(with

C-60)

Torque

PIAVDACK

si.00seieateds

cool

een

occu

60g-cm

Fast

Forward/Rewind

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

than

50g-cm

—Specifications

subject

change

without

notice.—

142

385

Wow

Flutter

......0....

0...

cece

eee

0.55%,

RMS

Frequency

Response

(Playback)

POQOS

cen

Gucevin

See

eantascdiaeteasonia

63Hz

8,000Hz

MGs

ies

ues

aalonas

bandana

aus

63Hz

10,000Hz

Signal

Noise

Ratio

(with

Fe2Os)

......

than

40dB

Crosstalk

(with

Fe203)

Tack40

Track.

scjccssesizicssiveme

ass:

than

53dB

Channel

Separation

(with

Fe2O3)

.......

than

30dB

Hum

Noise

(at

Vol.

Min.)

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

—38dBs

Terminal

Impedance

FICAGDNONG

bcdc

ical

cidedeacaseaendcouseres

320,

WM-9390

DISASSEMBLY

INSTRUCTIONS

GENERAL

REMARKS

Before

disassembling

the

unit,

spread

soft

rubber

mat

cloth

the

workbench

avoid

scratches

and

grease

stains.

LED

Donotusea

material

which

likely

cause

static

electricity

because

transistors

and

ICs

may

easily

damaged

it.

Reassemble

the

unit,

noting

the

kinds

screws,

the

solder-

ing

and

arrangement

the

leads.

Refer

“Circuit

Diagram

and

Exploded

Views”

for

correct

assembly.

Orange

Before

disassembling

the

unit,

take

out

the

cassette

tape

and

the

batteries.

White

CABINET

BOTTOM

REMOVAL

Open

the

Cassette

Compartment

Lid

pressing

the

Stop

Button

and

take

out

the

cassette

tape

from

the

Compartment.

Turn

over

the

unit

with

front

side

down

soft

surface

and

remove

the

Battery

Compartment

Lid.

Then,

remove

the

(6)

batteries.

Remove

the

five

screws

fastening

the

Cabinet

Amplifier

P.C.Board

Bottom

and

lift

the

Cabinet

Bottom

away

from

the

unit.

Cabinet

Bottom

Turn

over

the

P.C.Board

toward

the

front

the

unit

with

cau-

tion

not

damage

the

Playback

Head,

Motor

and

Battery

Terminal

leads.

Reassembie

reverse

order.

NOTE:

When

unsoldering

the

removed

lead

wires,

refer

the

wiring

Reassemble

reverse

order.

diagram

avoid

miswiring.

AMPLIFIER

P.C.BOARD

REMOVAL

MECHANISM

CHASSIS

REMOVAL

the

instructions

for

the

“Cabinet

Bottom

Removal”.

the

instructions

for

“Cabinet

Bottom

Removal”

and

“Amplifier

P.C.Board

Removal”.

Remove

the

screw

(6)

fastening

the

P.C.Board

and

unsolder

the

LED

leads

(White

and

Orange)

from

the

P.C.Board

pro-

Remove

the

two

posts

and

the

screw

(9)

holding

tect

the

LED

indicator.

the

Mechanism

Chassis.

Cabinet

Top

DISASSEMBLY

INSTRUCTIONS

(continued)

Mechanism

Chassis

After

the

Cassette

Compartment

Lid

opened,

set

the

mechanism

the

playback

mode

pressing

the

Play

Button.

detach

the

Mechanism

Chassis,

lift

the

Mechanism

Chas-

sis

the

direction

the

arrow

until

the

Play

Button

re-

moved

from

the

button

hole

the

Cabinet

Top.

Then,

left

the

motor

side

the

Mechanism

Chassis

away

from

the

Cabinet

Top.

Reassemble

reverse

order.

ADJUSTMENTS

GENERAL

REMARKS

Before

adjusting

the

mechanism

this

unit,

wipe

the

tape

contacting

surfaces

the

Head,

Pinch

Roller

and

Capstan,

and

the

surfaces

the

driving

parts

such

the

Drive

Belt,

Take-up

Belt,

Flywheel

and

Pulley

with

soft

cloth

soaked

alcohol.

Trouble

may

occur

because

oil

and

grease

stains.

Carefully

handle

the

belt

because

grease

easily

attaches

it.

Then,

check

the

used

rubber

parts.

the

rubber

has

dete-

riorated

scratched,

replace

the

parts

with

new

ones.

NOTES

HANDLING

THE

CHIP

ELEMENT

Pay

due

caution

the

following

items:

Chip

Element

Solder

not

use

the

removed

chip

element

again.

Chip

Element

Solder

YU)

(Incorrect)

(Correct)

P.C.Board

Use

soldering

iron

less

than

30W.

The

soldering

iron

should

not

touch

the

body

the

chip

element.

Complete

soldering

short

time.

Apply

solder

the

chip

element

illustrated

below.

EQUIPMENT

REQUIRED

VTVM

Frequency

Counter

Dummy

Load

(330

)

Test

Tapes

3kHz

test

tape

(Example:

TEAC

MTT-111)

for

the

Tape

Speed

Adjustment

10kHz

test

tape

(Example:

TEAC

MTT-114)

for

the

Head

Azimuth

Adjustment

Alignment

Tool

NOTE:

Before

the

Electrical

Adjustments,

set

the

unit

follows:

TORE

SWICD):

tc2

avd

Radeakntn

escllcarenuddets

ouiece

bout

ves

HIGH

Mute

Switch

...........

ccc

cece

eeccneceueeeuceuavens

OFF

Balance

Control

................0ceceeeee

(Center

Position)

Supply

regulated

power

the

Ext.

Power

Jack.

TAPE

SPEED

ADJUSTMENT

Remove

the

Battery

Compartment

Lid

and

take

out

the

bat-

teries

from

the

compartment,

and

connect

the

regulated

power

supply

the

Ext.

Power

Jack.

Connect

frequency

counter

the

Headphones

Jack

il-

lustrated

and

insert

3kHz

test

tape

(Example:

TEAC

MTT-111)

into

the

Cassette

Compartment.

Frequency

Counter

3kHz

PHONES

Dummy

Load

330

While

playing

back

the

test

tape,

adjust

the

tape

speed

Potentiometer

for

Tape

Speed

Adjustment

turning

the

potentiometer

(P301)

the

P.C.Board

with

alignment

tool

until

the

frequency

counter

reads 3kHz.

ADJUSTMENTS

(continued)

HEAD

AZIMUTH

ADJUSTMENT

Open

the

Cassette

Compartment

Lid

and

remove

the

Azi-

muth

Cover

from

the

Lid

pushing

with

tweezers

the

direction

the

arrow.

Cassette

Compartment

Lid

Azimuth

Cover

Connect

two

VTVMs

and

synchroscope

the

Headphone

Jack

illustrated.

Set

the

synchroscope

follows:

MMOD

crease

partner

tecerin

cnet

neato.

CHOP

(chopped)

“SOURCE

acs

acess

INT

(internal),

CH1

CH2

AUTO

(automatic)

Dummy

Load

330,

qn)

Dummy

Load

330

anny

jaa=

PHONES

Insert

10kHz

test

tape

(Example:

TEAC

MTT-114)

into

the

Cassette

Compartmnt

and

play

back.

—5-—

Azimuth

Adjusting

Screw

While

playing

back

the

test

tape,

slowly

turn

the

azimuth

ad-

justing

screw

until

the

amplitudes

both

channel

output

wave

forms

become

maximum

and

the

wave

forms

overlap

well

possible

the

maximum

condition

the

VTVM

iilustrated.

Adjustment

ry”)

Playback

Head

After

the

adjustment,

secure

the

adjusting

screw

with

paint

glue.

PARTS

LIST

ner

Part

No.

Description

Q’ty

PACKAGE

141

1419

65300

—_

individual

Carton

141

1449

82600

Styrofoam

Case

141

2519

08015

Poly

Cover

150

141

3919

42000

Plain

Pad

141

2519

12090

Poly

Cover

141

4559

00100

Serial

No.

Sheet

141

4729

37300

Red

Label

(Red)

ACCESSORIES

1529

70240

Headphones

141

1259

02700

Belt

Clip

Assy

141

1769

05100

Shoulder

Strap

141

1819

13900

Carrying

Case

141

4519

07700

Warranty

Card

141

4729

37321

POP

Label

141

4119

31586

Instruction

Manual

HEADPHONES

1529

70240

Headphones

141

1769

06800

‘Slider

141

8219

32600

Stopper

141

1769

06700

Hanger,

Left

141

1769

06701

Hanger,

Right

141

1259

04900

Housing

1529

70280

Ear

Speaker

141

2449

44200

Baffle

141

4469

41900

Ear

Pad

9 4

2369

73640

Plug

Cord

141

3529

38200

Slide

Adjustor

CABINET

141

2449

45800

Sheet

141

2899

14000

Adhesive

Sheet

CAI

141

1119

88106

Completed

Cabinet

Top

(Silver)

CAI

141

1119

88105

Completed

Cabinet

Top

(Red)

CA2

141

4219

10602 Screw

(Silver)

+M1,7x4.0

CA2

141

4219

10601

Screw

(Red)

+M1.7x4.0

CA3

2029

71160

LED,

SLP-151B

(Battery)

(D1]

CA4

141

2419

27400

Azimuth

Cover

(Silver)

CA4

141

2419

27402

Azimuth

Cover

(Red)

CA5

141

7539

24300

Post

CA6

1329

78100

Amplifier

P.C.B.

Assy

[See

PCB1]

(Silver)

CA6

1329

78105

Amplifier

P.C.B.

Assy

[See

PCB1]

(Red)

CA7

141

4419

14901

Sheet

CA8

141

4219

08900

Screw

CA9

141

1639

50500

Volume

Knob

(Silver)

CAS

141

1639

50501

Volume

Knob

(Red)

CA10

141

4469

39000

Cushion

CA11

+141

1659

08900

Mute

Button

CA12

141

1649

19800

Tone

Knob

(Silver)

CA12

141

1649

19801

Tone

Knob

(Red)

CA13

141

1119

88200

Cabinet

Bottom

Assy

(Silver)

CA13.

141

1119

88202

Cabinet

Bottom

Assy

(Red)

CA14

141

2149

18300

Cabinet

Bracket

CA15

141

4219

27200

Screw

+M1.7x5.0

CA16

§=141

1339

28600

Battery

Lid

(Silver)

CA16

141

1339

28602

Battery

Lid

(Red)

CA17

141

4469

43200

Cushion

CA18

141

4219

30000

Screw

(Silver)

+M2.0x10

CAi8

141

4219

30001

Screw

(Red)

+M2.0x10

oO)

Ref.

No.

Part

No.

Description

Q’ty

CX1

101

1302

00711

Screw,

Pan

Hd.

+M2.0x7

CX2

101

1702

00614

Screw,

Bind

Hd.

(Silver)

+M2.0x6

CX2

101

1702

00618

Screw,

Bind

Hd.

(Red)

+M2.0x6

CX3

110

2101

70013

Spring

Washer-2

M1.7

CX4

127

1317

04014

Screw-1,

Pan

Hd.

+M1.7x4.0

NOTES:

Parts

order

must

contain

Model

Number,

Part

Number

and

Description.

Ordering

quantity

screws

and

resistors

must

multiple

pcs.

CABINET

EXPLODED

VIEW

HEADPHONE

EXPLODED

VIEW

Ref.

No.

MC1

MC2

MC3

Mc4

MC5

MC6

MC7

MC8

MC9

MC10

MC11

MC12

MC13

MC14

MC15

MC16

MC17

MC18

MC19

MC20

MC21

MC22

MC23

MC24

MC25

MC26

MC27

MC28

MC29

MC30

MC31

MC32

MC33

MC34

MC35

MC36

MC37

MC38

MC39

MC40

MC41

MC42

MC43

MC44

MC45

MC46

MZ1

MZ2

MZ3

Part

No.

MECHANISM

141

3119

21600

141

4459

26800

141

4219

23300

5279

71240

141

4539

27601

141

7419

36700

141

8519

07500

141

3529

36500

141

8519

47400

2429

72250

141

4219

24500

141

8559

02500

141

5369

01900

141

4839

17500

141

4539

30600

141

5519

47200

141

5459

02000

141

8529

11600

141

4539

19800

141

5219

09400

141

5649

20600

141

5219

03701

141

7319

54700

141

7419

36600

141

7419

36500

141

7439

31000

141

3519

60800

141

8549

06800

141

8519

71200

141

8549

18200

141

4219

29900

141

7439

31100

141

3519

21500

141

3229

40300

141

4579

01400

141

4539

13000

141

5519

47000

141

5649

09900

141

5319

07300

141

8529

11700

141

7439

30700

141

5519

47500

141

4539

15700

141

7419

36400

141

5519

47100

141

4539

31500

101

1802

00311

101

2502

00611

112

1301

50082

MECHANISM

PARTS

LIST

Description

Chassis

Assy

Cushion,

Motor

Screw

Motor

[M1]

Washer

Play

Lever

Assy

Spring,

Stop

Lever

Base

Head

Spring,

Head

Play

Back

Head

[HD1]

Screw

Spring,

Supply

Reel

Assy

Washer

F.FWD

Gear

Pinch

Roller

Assy

Spring,

Pinch

Roller

Washer

Flywheel

Assy

Drive

Beit

Sub

Flywheel

Assy

Lock

Plate

Stop

Lever

Assy

Rewind

Lever

Assy

Review

Arm

Plate

Spring,

Lock

Plate

Spring

Screw

Power

Arm

Reel

Plate

Assy

Shield

Plate

Washer,

Take-up

Pulley

Washer

Take-up

Pulley

Take-up

Belt

Take-up

Reel

Assy

Spring,

ASO

Cancel

Take-up

Arm

Take-up

Gear

Washer

Fast

Lever

Assy

Fast

Gear

Washer

Screw,

Truss

Hd.

Screw,

Cylinder

Hd.

Ring

M6.0x10x0.25

+M2.0x3

-M2.0x6

M1.5

Q’ty

ee ee

a a

mrs

NOTES:

Parts

order

must

contain

Model

Number,

Part

Number

and

Description.

Ordering

quantity

screws

and

resistors

must

multiple

pcs.

MECHANISM

EXPLODED

VIEW

(Chassis

Top)

&——me14

MC13

——

M12

——-G

MC21

MC20

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