Sanyo MGP17 Manuale utente

SERVICE

MANUAL

STEREO

CASSETTE

PLAYER

SANYO

MGP17

EUROPE

142

429

35

(Black)

142

429

36

(White)

SPECIFICATIONS

Power

Source

DG

snttinoxan

Sach

dhiSectn

alee

dees’

3V

(UM-3,

HP

7,

AA

Cell,

Mignonzelle,

R

6)

x

2

Output

Power

..............cebeccceeseecees

25mW

x

2

(Max.)

Current

Consumption

(at

Vol.

Min.)

Playback

mode

............0.....cceceeee

170mA

Fast

Forward

.............cc.ccceceseacees

240mA

Rewind

mode

....................cceceees

240mA

Tape

Speed

ooo...

cece

cee

eceeeeeeeeeees

1-7/8ips.

+3%

Fast

Forward

................cccececnceusece

160sec.

(with

C-60)

Rewind

Time

..............c.cceeeeseceees

160sec.

(with

C-60)

Torque

Playback

.........c.ccccsceceseeceeeueeeees

32

~

60g-cm

Fast

Forward/Rewind

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

more

than

50g-cm

Wow

&

Flutter

................cceeseeeseeeee

0.5%,

WRMS

Frequency

Response

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

63Hz

~

10,000Hz

Graphic

EQ.

Control

(100Hz/1kHz/10KHz)

UO

assacsidavicagserdsedes

eget

secede

sectors

+8dB

+3dB

Ove

Sits

8

Shes

behets

Ponts

ieeeteasee

ce

-8dB

+3dB

Signal

to

Noise

Ratio

..........0.0.........

more

than

43dB

Crosstalk

Track

to

Track

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

more

than

50dB

Channel

Separation

(with

Fe2O3)

.......

more

than

30dB

Hum

&

Noise

(at

Vol.

Min.)

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

—65dBs

Terminal

Impedance

Headphone

................ccccceeeceeeaes

320,

Dimensions

...............0.e.cccaeas

86(W)

x

120(H)

x

36(D)mm

Weight

(w/o

battery)

.............0.....008

225g

(Approx.)

—Specifications

subject

to

change

without

notice.—

WM-17085

DISASSEMBLY

INSTRUCTIONS

GENERAL

REMARKS

@

Before

disassembling

the

unit,

spread

a

soft

rubber

mat

ora

cloth

on the

workbench

to

avoid

scratches

and

grease

stains.

@

Do

not

use

a

material

which

is

likely

to

cause

static

electricity

because

transistors

and

ICs

may

be

easily

damaged

by

it.

Reassemble

the

unit,

noting

the

kinds

of

screws,

the

soldering

and

arrangement

of

the

leads.

Refer

to

“Circuit

Diagram

and

Exploded

Views’

for

correct

assembly.

Before

‘disassembling

the

unit,

take

out

the

cassette

tape

and

the

batteries.

CABINET

BOTTOM

REMOVAL

1.

Open

the

Cassette

Compartment

Lid

by

pressing

the

Stop

Button

and

take

out

the

cassette

tape

from

the

compartment.

Turn

over

the

unit

with

the

front

side

down

on

a

soft

surface

and

remove

the

Battery

Compartment

Lid.

Then,

remove

the

batteries.

Remove

the

four

screws

(1

~

4)

fastening

the

Cabinet

Bottom

and

lift

the

Cabinet

Bottom

away

from

the

unit.

Cabinet

Bottom

©

4.

Reassembie

in

reverse

order.

P.C.BOARD

REMOVAL

1.

Remove

the

Cabinet

Bottom

by

following

the

instructions

for

the

“Cabinet

Bottom

Removal”.

Unsolder

the

FPC

of

the

Graphic

Equalizer

from

the

P.C.Board.

Remove

the

screw

(5)

fastening

the

P.C.Board.

Turn

over

the

P.C.Board

in

the

direction

of

the

arrow

with

caution

not

to

damage

the

Playback

Head

and

Motor

leads.

ni

.

Reassemble

in

reverse

order.

NOTE:

When

mounting

the

Amplifier

P.C.Board,

check

to

see

that

the

power

switch

operates

correctly

by

pressing

the

Play

Button.

CASSETTE

MECHANISM

REMOVAL

.

Remove

the

P.C.Board

by

following

the

instructions

for

“Cabinet

Bottom

Removal”

and

“P.C.Board

Removal”.

2.

Remove

the

three

screww

(6

~

8)

holding

the

Cassette

Mechanism.

3.

To

detach

the

Cassette

Mechanism,

lift

the

Mechanism

in

the

direction

of

the

arrow.

4.

Reassemble

in

reverse

order.

ADJUSTMENT

PROCEDURES

GENERAL

REMARKS

3.

While

Playing

back

the

test

tape,

adjust

the

tape

speed

by

©

Before

adjusting

the

mechanism

of

this

unit,

wipe

the

tape

turning

the

potentiometer

(P401)

on

the

P.C.Board

with

an

contacting

surfaces

of

the

Head,

Pinch

Roller

and

Capstan,

alignment

tool

until

the

frequency

counter

reads

3kHz.

and

the

surfaces

of

the

driving

parts

Such

as

the

Drive

Belt,

Take-up

Belt,

Flywheel

and

Pulley

with

a

soft

cloth

soaked

in

alcohol.

Trouble

may

occur

because

of

oil

and

grease

stains.

©

Carefully

handle

the

belt

because

grease

easily

attaches

to

it.

Then,

check

the

used

rubber

parts.

If

the

rubber

has

deteriorated

or

is

Scratched,

replace

the

Parts

with

new

ones.

EQUIPMENT

REQUIRED

©

Frequency

Counter

Dualtrace

Oscilloscope

VTVM

(2

sets)

Dummy

Load

(32:0)

Test

Tapes

#

3kHz

test

tape

(Example:

TEAC

MTT-111)

for

the

Tape

Speed

Adjustment

*

10kHz

test

tape

(Example:

TEAC

MTT-114)

for

the

Head

HEAD

AZIMUTH

ADJUSTMENT

Azimuth

Adjustment

1.

Connect

two

VTVMs

and

a

dualtrace

Oscilloscope

to

the

©

Alignment

Too!

Headphone

Jack

as

illustrated,

NOTE:

Set

the

osci

lloscope

as

follows:

Before

the

Electrical

Adjustments,

set

the

Switch

and

EM

ODE

siscasntpsi

tir

scnesslecicve:

CHOP

(chopped)

Control

as

follows:

B

SQURCE

kee

elt

cuag

i

«:

INT

(internal),

CH1

or

CH2

¥

VOLUME

COMLNOL

sseevsssessdovisaresoasedectessec:

As

desired

PSWEEP

MODE

o.oo

occcscccscscas

cs...

AUTO

(automatic)

#

Graphic

EQ.

Controls

«00...

0

(click

position)

#

Install

new

two

batteries

to

the

battery

compartment

for

the

adjustment.

TAPE

SPEED

ADJUSTMENT

1.

Remove

the

Battery

Compartment

Lid

and

take

out

the

batteries

from

the

compartment,

and

connect

the

regulated

DC

3V

power

Supply

to

the

Ext.

Power

Jack.

2.

Connect

a

frequency

counter

to

the

Headphones

Jack

as

illustrated

and

insert

a

3kHz

test

tape

(Example:

TEAC

MTT-111)

into

the

Cassette

Compartment.

Frequency

Counter

LJoloooigo]

a

[Fic

cong:

Gd

:

I

PHONES

2.

Insert

a

10kHz

test

tape

(Example:

TEAC

MTT-114)

into

the

Cassette

Compartment

and

play

it

back.

ADJUSTMENT

PROCEDURES

(continuea)

3.

While

playing

back

the

test

tape,

slowly

turn

the

azimuth

adjusting

screw

until

the

amplitudes

of

both

channel

output

waveforms

become

maximum

and

the

waveforms

overlap

as

well

as

possible

as

illustrated.

:

Then

the

VTVMs

must

be

read

at

the

maximum

as

much

as

possible.

Azimuth

Adjusting

Screw

4.

After

the

adjustment,

secure

the

adjusting

screw

with

paint

or

glue.

PARTS

LIST

fet.

Part

No.

Description

Q’ty

oe

Part

No.

Description

Q’ty

PACKAGE

CA8

141-2-4219-30001

Screw,

+M1.7x10.0

(Black)

6

141-6-1419-88602

Individual

Carton

1

CA8

141-2-4219-30001

Screw,

+M1.7x10.0

(White)

2

141-6-1469-13300

Case

Styrofoam

1

CA8-1

141-2-4219-30002

Screw,

+M1.7x10.0

(White)

4

141-6-2519-12090

Poly

Cover

1

CAQ

141-2-3829-45200

Spring

Battery

1

141-6-3919-52100

Plain

Pad

1

CA10

—-

141-2-1639-63200

Knob

Volume

1

141-6-4559-03300

Serial

No.

Sheet

3

CAI

141-2-3829-45100.

Spring

Battery

Anode

1

141-6-4559-03979

Label

Color

BK

(Black)

1

CA12

—-141-2-1339-38000

Lid

Battery

(Black)

1

141-6-4559-03952

Label

Color

W

(White)

1

CA12

141-2-1339-38003

Lid

Battery

(White)

1

CA13.

—s-

141-2-4419-20100

Sheet

3

CA14.

—

141-2-1129-41403

Cabinet

Bottom

(Black)

1

ACCESSORIES

CA14

—«-141-2-1129-41404

Cabinet

Bottom

(White)

1

¢

4-1529-70671

Headphones

1

142-6-4119-32947

Instruction

Book

1

Cx1

128-3-1314-04018

Pl

Screw-3,

Pan

Hd.,

+M1.4x4.0

1

CX2

428-3-1317-04014

Pl

Screw-3,

Pan

Hd.,

+M1.7x4.0

1

CX3

443-3-1302-00618

Screw,

Pan

Hd.

Tapping-B,

+M2.0x6

1

CABINET

Cx4

110-3-2101-70013

Spring

Washer-2,

M1.7

1

CAI

141-0-1249-40002

Lid

Cassette

Assy

(Black)

1

CAI

141-0-1249-40003

Lid

Cassette

Assy

(White)

1

PCBI1

141-0-1939-14001

Amplifier

P.C.B.

Assy

1

CA2

4-2262-25860

FPC,

Equalizer

i

PCB2

_

141-0-1939-14130

Graphic

Equalizer

P.C.B.

Assy

1

CA3

141-2-3659-21900

Holder

Equalizer

(Black)

1

CA3

—_—-141-2-3659-21901

Holder

Equalizer

(White)

1

NOTE:

CA4

—141-2-4219-21700

Screw,

+M1.4x4.0

3

1.

Parts

order

must

contain

Model

Number,

Part

Number

and

CAS

141-2-8549-17200

Spring

Eject

1

Description.

CAG

141-2-1419-18615

Rating

Plate

1

2.

Ordering

quantity

of

screws

and

resistors

must

be

multiple

of

CA?

141-0-1129-18300

Cabinet

Top

Assy

1

10

pcs.

Adjustment

CABINET

EXPLODED

VIEW

—5—

CA8

(Black)

(Red)

S—

CA8-1

(White)

(Blue)

(Yellow)

CA8-1

(White)

(Blue)

(Yellow)

Ref.

No.

Part

No.

HEADPHONES

PARTS

LIST

Description

Q’ty

HEADPHONES

4-1529-70671

141-0-1769-01701

141-2-1259-10300

141-2-1259-10400

4-1529-70680

141-2-4469-55800

4-2369-76090

anh

wh

~~

+

NOTES:

Headphones

-

Headphone

Band

Assy

Housing

Left

Housing

Right

Ear

Speaker

Ear

Pad

Plug

Cord

|anne--

—

1.

Parts

order

must

contain

Model

Number,

Part

Number

and

Description.

HEADPHONES

EXPLODED

VIEW

MECHANISM

PARTS

LIST

ner

Part

No.

Description

Q’ty

MECHANISM

MC1

141-0-3119-25000

Chassis

Assy

1

MC2

141-2-4459-33400

Cushion

Motor

1

MC3

4-5279-71470

Motor

[M1]

1

MC4

141-0-7419-42600

Lever

Play

Assy

1

MC5

141-2-3529-46200

Head

Base

1

MC6

141-2-8519-47400

Spring

Head

1

MC7

141-4-2429-72390

Playback

Head

[HD1]

1

MC8&

141-2-4219-24500

PC

Screw,

Pan

Hd.-3,

+M2.0x4.0

1

MCc9

141-2-8559-02500

Spring

Supply

1

MC10

~—-

141-2-4539-18100

Washer,

M1.6x3.0x0.13

1

MC11

141-0-5369-01901

Reel

Supply

Assy

1

MC12

=

141-2-4539-17500

Washer,

M1.25x3.0x0.25

2

“MC13

=

141-2-4539-30600

Washer,

M1.25x4.0x0.25

1

MC14

=:

141-2-5519-47200

Gear

F.FWD

1

MC15

—-

141-0-5459-02000

Pinch

Roller

Assy

1

MC16

=

141-2-8529-25800

Spring

Pinch

Roller

1

MC17

—-141-2-4539-35000

Washer,

M1.6x3.2x0.4

1

MC18

=

141-2-4539-27601

Washer,

M2.1x3.5x0.13

2

MC19

141-2-8519-07500

Spring

Lever

Stop

1

MC20

=.

141-2-4539-19800

Washer,

M2.1x5.0x0.13

2

MC21

141-0-5219-11900

Flywheel

Assy

1

MC22

=

141-2-5649-25700

_

Belt

Drive

1

MC23

=

141-2-4729-09200

Lug

1

MC24

~—-

141-2-4219-10600

Screw,

+M1.7x4.0

1

MC25

~—s-

141-0-7419-39601

Lever

Stop

Assy

1

MC26

~—-

141-0-7419-39501

Lever

Rewind

Assy

1

MC27

~—s:

141-2-7439-31000

Arm

Review

1

MC28

=

141-2-8529-14600

Spring

Plate

Lock

1

MC29

~—s-:

141-2-3519-64901

Plate

1

MC30

=:

141-2-8549-06800

Spring

Plate

Lock

©

{

MC31

141-2-8519-71200

Spring

2

MC32

=

141-2-4219-29900

Screw,

Pan

Hd.

Tapping-B

+M1.7x4.0

4

MC33

—-

141-2-7439-31100

Arm

Power

1

MC34

+

141-0-5319-07302

Reel

Take-up

Assy

1

MC35

~—s-

141-2-8529-11700

Spring

Cancel

ASO

1

MC36

—-

141-0-3519-21500

Plate

Reel

Assy

1

MC37

—-

141-2-4539-13000

Washer,

M1.6x4.0x0.13

1

MC38

141-2-5519-47000

Pulley

Take-up

1

MC39

=

141-2-5649-09900

Belt

Take-up

1

MC40

=:

141-2-8549-18200

Spring

1

MC41

141-2-7439-30700

Arm

Take-up

1

MC42

141-2-5519-47500

Gear

Take-up

1

MC43.—s-

141-2-4539-15700

Washer,

M1.5x3.5x0.4

1

MC44

~—s-

141-0-7419-39401

Lever

Fast

Assy

1

MC45

~—s-

141-2-5519-47100

Gear

Fast

1

MC46

~—s-:

141-2-7319-57300

Plate

Lock

1

MZ1

101-3-1802-00311

Screw,

Truss

Hd.,

-+M2.0x3

1

MZ2

101-3-3702-00611

Screw,

Bind

Hd.,

=M2.0x6

1

MZ3

128-3-1317-03518

Pl

Screw-3,

Pan

Hd.,

+M1.7x3.5

1

MZ4

112-3-1301-50082

E

Ring,

M1.5

1

NOTES:

1.

Parts order

must

contain

Model

Number,

Part

Number

and

Description.

2.

Ordering

quantity

of

screws

and

resistors

must

be

multiple

of

10

pes.

(Chassis

Top)

MECHANISM

EXPLODED

VIEW

&—mecl2

MC11

mctO

S

mcg

gy

g

o&—we13

MCs

Co

>—wers

do—mz4

MC15

MECHANISM

EXPLODED

VIEW

«continuea)

(Chassis

Bottom)

MC46

P.C.BOARD

PARTS

LIST

Ref.

Part

No.

Description

Q’ty

oer

Part

No.

Description

Q’ty

AMPLIFIER

P.C.B.

ASSY

C602.

=

CG1-8-2500-KHOOB

Chip

Capacitor

0.00184F

50V

+10%

1

PCBI

441-0-1939-14001

Amplifier

P.C.B.

Assy

1

C603

CG2-7-2500-KHOOB

ChipCapacitor

0.0027uF

50V

+10%

1

141-2-4729-05000

Staple,

5mm

;

17

C604

CG8-2-2500-KHOOB

ChipCapacitor

0.00824F

50V

+10%

1

Ji

4-2359-77750

—

Jack

3P

(Headphones)

1

C605

CG1-2-3250-KHOOB

Chip

Capacitor

0.012uF

25V

+10%

1

J2

4-2359-78080

Ext.

Power

Jack

1

C606

CG1-0-3250-KHOOB

Chip

Capacitor

O.01uF

25V

+10%

1

S1

4-2319-76920

Leaf

Switch

(Power)

1

C701

CG1-0-4250-ZI00B

Chip

Capacitor

O1uF

25V

+80-20%

1

P401

4-2229-76480

Potentiometer,

B-2.2k0.

1

R501

401-038-6406

Chip

Resistor

47kQ

10W

+5%

1

VRO1

4-2229-75580

Rotary

Volume

(Volume/A-20kQ)

1

R502

401-037-6803

Chip

Resistor

12kQ

1N0W

+5%

1

TH401

4-2219-70540

Thermistor,

200

1

R503

401-038-9209

Chip

Resistor

6.8kQ

110W

+5%

1

or

204-5-9000-00200

.

Thermistor,

SDT

20

1

R504

401-038-6406

Chip

Resistor

47kQ 110W

+5%

1

10301

4-2069-75070

IC,BA3506A

1

R505

401-038-6406

Chip

Resistor

4.7kQ

110W

+5%

1

1C401

=.

207-5-1895-52310

+

IC,

LA

5523

1

R506

401-038-0800

Chip

Resistor

22kQ

1/10W

+5%

1

C101

=

CC1-0-2500-KEOQ1R

Ceramic

0.001uF

50V

+10%

1

R507

401-037-9309

Chip

Resistor

18kQ

1N0W

+5%

1

C102

CD3-3-663A-0001V

Electrolytic

33uF

6.3V

1

R508

401-037-9309

Chip

Resistor

18kQ

110W

+5%

1

C103.

=

CM2-2-3500-JOOBV

Mylar

0.022uF

50V

+5%

1

R509

401-038-3702

Chip

Resistor

33kQ

1/10W

+5%

1

C104

CD4-7-5500-0001V

Electrolytic

47uF

50V

1

R510

401-038-0800

Chip

Resistor

22kQ

1N0W

+5%

1

C105

CD4-7-5500-0001V

Electrolytic

474F

50V

1

R511

401-037-5806

Chip

Resistor

IMO

110W

+5%

1

C106

CC1-0-2500-KE01R

Ceramic

0.001mF

50V

+10%

1

R601

401-038-6406

Chip

Resistor

47kQ 110W

=+5%

1

C107

~=CT1-0-563A-MO0OAV

Tantalum

wF

63V

+20%

.

1

R602

401-037-6803

Chip

Resistor

12kQ

1/0W

+5%

1

C108

CD2-2-7100-0001V

Electrolytic

220uF

=

10V

1

R603

401-038-9209

Chip

Resistor

6.8kQ 1/10W

+=5%

1

C201

CCi-0-2500-KE01R

Ceramic

0.001MF

50V

+10%

1

R604

401-038-6406

Chip

Resistor

4.7kQ

110W

+5%

1

C202

=

CD3-3-663A-0001V

Electrolytic

33uF

66.3V

1

R605

401-038-6406

Chip

Resistor

4.7kQO

110W

+5%

1

C203.

CM2-2-3500-JOOBV

Mylar

0.022uF

50V

+5%

1

R606

401-038-0800

Chip

Resistor

22k.

10W

+5%

1

C204

=

CD4-7-5500-0001V

Electrolytic

4.74F

=650V

1

R607

401-037-9309

Chip

Resistor

18kQ

110W

+5%

1

C205

CD4-7-5500-0001V

Electrolytic

47uF

50V

1

R608

401-037-9309

Chip

Resistor

18kKQ

1/10W

+5%

1

C206

=

CC1-0-2500-KE01R

Ceramic

0.001MF

50V

+10%

1

R609

401-038-3702

Chip

Resistor

33kQ

1/10W

+5%

1

C207

=

CT1-0-563A-MO0AV

=

Tantalum

1uF

63V

+20%

1

R610

401-038-0800

Chip

Resistor

22k.

10W

=+5%

1

C208

CD2-2-7100-0001V

Electrolytic

220uF

=10V

1

R611

401-037-5806

Chip

Resistor

1MQ

110W

+5%

1

C301

CD3-3-663A-0001V

Electrolytic

33uF

6.3V

1

C302

=

CD2-2-7100-0001V

Electrolytic

220MF

=10V

1

C303

CD2-2-7100-0001V

Electrolytic

220uF

=

10V

1

NOTES:

C304

CD2-2-7100-0001V

Electrolytic

220MF

=10V

1

1.

Parts order

must

contain

Model

Number,

Part

Number

and

C401

CD2-2-5500-0001V

Electrolytic

2.2uF

50V

1

Description.

C402

—CD2-2-6160-0001V

Electrolytic

22uF

16V

1

2.

Ordering

quantity

of

screws

and

resistors

must

be

multiple

of

R101

401-029-9706

Carbon

2200

1/8W

+5%

1

10

pes.

R102

401-032-0608

Carbon

5.6kQ

1/8W

=5%

1.

R103

401-029-2004

Carbon

150kQ

1/8W =+5%

1

R201

401-029-9706

Carbon

2200

1/8W

+5%

1

R202

401-032-0608

Carbon

5.6kQ

1/8W

+5%

1

R203

401-029-2004

Carbon

150kQ

1/8W

+5%

1

R301

401-031-8308

Carbon

560

1/8W

+5%

1

R302

401-028-3200

Carbon

1kQ

1/8W

+5%

1

R401

401-029-7900

Carbon

2000

1/8W

+5%

1

R402

401-031-2405

Carbon

3.9kQ

1/8W

+5%

1

R403

401-031-6601

Carbon

4.7kQ

1/8W

45%

1

R404

401-032-4606

Carbon

6.8kQ

1/8W

+5%

1

GRAPHIC

EQUALIZER

P.C.B.

ASSY

PCB2

141-0-1939-14130

Graphic

Equalizer

P.C.B.

Assy

141-0-1939-15420

PCB,

Graphic

Equalizer

4-2262-27420

FPC,

Graphic

Equalizer

141-2-2899-55800

Adhesive

Sheet

141-2-4359-42400

Insulator

VR2

4-2229-76390

Slide

Volume

(Equalizer/W-100kQ)

Q501

203-5-4422-81216

Transistor,

2502812

Q601

203-5-4422-81216

Transistor,

2SC2812

C501.

=

CG3-9-1500-KHOOB

Chip

Capacitor

390pF

50V

+10%

C502)

=

CG1-8-2500-KHO0B

ChipCapacitor

0.0018uF

50V

+10%

C503

€CG2-7-2500-KHOOB

ChipCapacitor

0.0027uF

50V

+10%

C504

=

ChipCapacitor

0.0082uF

50V

+10%

C505

CG1-2-3250-KHOOB

Chip

Capacitor

0.012uF

25V

+10%

C506

CG1-0-3250-KHOOB

Chip

Capacitor

O.01uF

§=625V

+10%

C601

=

=CG3-9-1500-KHOOB

Chip

Capacitor

390pF

50V

+10%

Pa

ne

a

Car

a

en

on

rr

Cone

Cs

Ce

Cn

—~10—

IC

&

TRANSISTOR

LEAD

IDENTIFICATION

TRANSISTOR

|

FRONT

VIEW

|

BOTTOM

VIEW

28C2812

TERMINAL

NAMES

B—

BASE

C—

COLLECTOR

E—

EMITTER

.

BA3506A

BOTTOM

VIEW

LA5523

FRONT/

BOTTOM

VIEWS

il

}

2

5

BA3506

BLOCK

DIAGRAM

LA5523

BLOCK

DIAGRAM

Bias

PreiN)

=

Pre

NF}

Pre

OUT!

Power

INI

Power

OUT!

Ne

15

|

GND

Vref

OUT}

Vref

OUT

2

AMPLIFIFER

P.C.BOARD

&

WIRING

DIAGRAM

(BOTTOM

VIEW):

3}

14)15

|

16

451.4

|

1.4

1

1.4}

1.4]

1.4

11

|

12

1.44

1.

O

5

eG

(3)

mo

s

°°.

>

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