Sanyo JT250L Manuale utente

SERVICE

MANUAL

STEREO

TUNER

JT250!

Looe

eID

VI

Le

(EUROPE)

This

is

a

service

manual

for

model

JT2501L

and

only

items

changed

from

model

JT3OOL

are

indicated.

For

other

items,

refer

to

Service

Manual

for

model

JTSOOL

(WM-8681)}.

#

mark

represents

a

non-interchangeable

part.

(PACKING

&

ACCESSORY)

141-6-133T-39902

141-6-410T-83302

141-6-133T-46201

-141-6-410T-83308

~

(CABINET)

1

141-0-122T-46201

4

141-2-163T-81330

5

141-2-163T-91900

12

141-2-126T-41102

16

141-2-160T-09700

17

141-2-160T-16500

27

141-2-247T-11800

141-0-122T-46205

141-2-163T-81340

141-2-163T-9

1930

(CHASSIS)

141-2-126T-41109

141-2-160T-09701

141-2-160T-16501

Not

used

Individual

Carton

+

Instruction

Manual

|

#

Front

Panel

Assy

#

Rotary

Knob,

Timing

#

Rotary

Knob,

Selector

#

Back

Lid

.

i

Push

Button,

MONO/STEREO

#

Push

Button,

POWER

SW

#

Sheet

.

°

Ty

ic

.

~~

ee

1

|

Add

this

sheet

to

Model

JT300L

Service

Manual.

|

Apr./’83/2000

KA

Printed

in

Japan

SANYO

ELECTRIC

TRADING

CO.,

LTD.

33,

Hiyoshi-cho

2-chome,

Moriguchi-shi,

Osaka-fu,

570

Japan.

SERVICE

MANUAL

STEREO

TUNER

JT

300L,

(EUROPE

)

SPECIFICATIONS

NOTE:

The

below

mentioned

specifications

are

mainly

based

on

the

[HF

measurements

standard.

They

can

therefore

not

directly

be

compared

with

specifications

based

on

the

DIN

standard

or

other

standards.

FM

section

87.5

—

108

MHz

(nominal)

Frequency

range...

eee

cece

eee

Usable

sensitivity

.............2++.+

2,0NV

(mono)

Signal

to

noise

ratio

(1

mV

ANT.).....

/.

70

dB

(mono)

Hermonic

distortion

(1kHz)..:...5.+.

0.2%

©

..

Frequency

response

......-0+0+0%

2,30

Hz

—

15

kHz

Stereo

separation

(1

KHz)

......

.:+...+

40dB

IF

rejection

2.0...

err

Soyaee

Ode.

|

*

Aerial

input...

2...

Coutts

sae:

20

ohms

unbalanced

AM

(MW

and

LW)

section

Frequency

range...

2.

ee

eee

Sensitivity

(ferrite

aerial)

|

Signal

to

noise

ratio

(5

m

V/m)

Selectivity

....+e+eeeee-

Pe

ee

eee

General

Power

requirements

|

Power

consumption

Dimensions

(Approx.)

se

see

ene

meeeereterteeaes

2

8

*#

fF

ee

He

ee

MW:

531

—:

1602

kHz

LW:

150

—

285

kHz

MW:

350

wV/m,

LW:

500

wV/m

MW:

40

dB

30

dB

AC:

18

V,

50

Hz

|

AC:

18

V,

300

mA

(maximum)

420

x

(W)

x

220

(D)

x

85

(H)

mm

(16-1/2”

x

8-5/8”

x

3-3/8”)

2.6

kg

(6

Ibs.)

*

Specifications

subject

to

change

without

notice.

NOTE:

The

power

switch

is

mounted

on

the

secondary

side

and

does

not

disconnect

the

set

from

AC-powe

r,

even

when

switched

off.

WM-8681

ASA

HOW

TO

REMOVE

THE

PANEL

.

Pull

out

the

power

cord

from

outet.

_

1.

Cabinet

|

| :

Remove

Four

screws

”a’’

(binding

head

tapping

Screw

4

x

8

mm)

and

one

screw

"b”

{binding

head

tapping

screw

3

x

8

mm)

securing

the

cabinet,

a

2.

Front

panel

| |

Pull

out

rotary

knobs

(Tuning

and

Band

Select).

Remove

six

screws

“'c’’

(binding

head

tapping

screw

3

x

10mm)

securing

the

front

panel.

3.:

Bottom

lid

|

Remove

two

screws

“‘d”

(binding

head

tapping

screw

3

x

6mm)

securing

the

bottom

lid,

and

slide

the

lid

from

left

side.

|

4.

Bracket

dial

scale:

| : :

Remove

three

screws

“‘e”

(binding

head

tapping

screw

3

x

8mm)

securing

the

bracket

dial

scale.

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9

PARTS

LIST

PACKING

&

ACCESSORY

.

CABINET

CHASSIS

141-6-133T-39902

141-6-144T-85000

|

141-6-231T-35600

1416-231T-25350

141-6-33

1T-1

1600

141-6-415T-23500

1416-4157

-32301

141-6-410T-83302

|

4-245T-00700

141-0-122T-46201

141-2-111T-54900

141-2-125T

-25900

141-2-163T-8

1330

141-2-163T-91900

141-2-174T-11200

141-2-221T-10600

|

141-2-126T

41102

141-2-125T-30100

141-2-146T

-30601

141-2-231T-013906

141-2-160T-09700

141-2-160T-16500

141-2-511T-24500

1410566T-13600

141-2-329T

08600

141-2538T-13200

141-2-855T-38700

141-2-340T-05003

141-2-447T-96001

141-2-661T-71300

141-0-661T-36300

141-2-247T-11800

141-2421T-20900

141-2-310T-76000

141-2472T-01001

141-2464T-14400

141-2-464T-11800

141-2-464T-20600

141-2-3.10T-81

100

141-2-310T-81200

141-2-852T-43500

141-2-247T-12500

141-2-464T-29900

141-2-464T-39500

123-2-472R-00401

|

441-2-247T-11801

|

Individual

Carton

Foam

Plastic

Case

inner

Polye

Cover,

Set

Inner

Polye

Cover,

Inst.

M

Protector

Sheet

|

Notice

|

Instruction

Manual

Antenna

Front

Panel

Ass’y

Cabinet

Bottom

Lid

Rotary

Knob,

Tuning

Rotary

Knob,

Selector

Stand

Bracket

Panel

Back

Lid

Bottom

Lid

Dial

Scale

Bracket

Diai

Scale

Push

Button,

MONO/STEREO

Push

Button,

POWER

SW

Pointer

Tuning

Shaft

Ass’y

Reflector

Drum

Spring

Coil

Rope

Cushion

Pulley

Ass’y

Sheet

Special

Screw

Bracket,

Pulley

(Left)

Lug

Fixer

Fixer,

AC

Cord

Fixer,

Lead

Bracket,

Pulley

(Right)

Bracket,

Pulley

(Center)

Spring

Wire

Sheet

Fixer,

Output

Lead

_

Fixer,

Output

Lead

Lug,

Earth

Sheet,

Shield

Plate

|

Pan.

Hd.

Tapping

Screw

2.3

x

6mm

Pan.

Hd.

Tapping

Screw

W/Washer

3

x

6mm

Pan.

Hd.

Tapping

Screw

W/Washer

3

x

8mm

Pan.

Hd.

Tapping

Screw

3x

20mm

Binding

Hd.

Screw

3

x

8mm

Binding

Hd.

Tapping

Screw

3x

4mm

.

Binding

Hd.

Tapping

Screw

3

x

6mm

Binding

Hd.

Tapping

Screw

3

x

8mm

pee

Hd.

Tapping

Screw

3x

10mm

Binding

Hd.

Tapping

Screw

4x8mm

Pan.

Hd.

Screw

W/Spring

Washer

3

x

4mm

wh

eek awh web ooh

oh

eb

ob

coh

wom

fy

eh eh

ee

eek

A

ee ed

ek

wed

Bek

ek

Be ek ek

wed

ek ek ed ed

ed

td

ow

od

ed

re

FIXING

PARTS

Y12

Y13

Y14

ELECTRICAL

PARTS

TUNER

P.C.

B.

ASS‘Y

|

71

CT3,4,5

CT6,7

L701

L102

L103

L104

L106

L108

L109

T201

T202,203

T204

T205

T206,207

T208

T301

CF201,20

D206

D203

,204

D207

,208

D201

202,

102,103,

101,205,

301

,302

D303

D304

€107

C209

C106

C206

C114

C108

C116

4-243T

-19974

4-236T-20000

4-240T-32800

141-4-250T-15704

4-224T-08372

4-224R-11600

4-224T-15471

4-265T-03700

|

4-265

T-03800

4-265R-15100

4-265T-51340

4-258T-28640

4-258T-28840

4-253T-15014

4-2561-05146

4-256R-19540

4-256T-04540

4-256T-04040

4-256R-00141

4-256R-00241

4-255T-02900

4-256T-81000

141-2-322T-40800

141-2-322T-18900

141-2-322T-72101

4-238T-58200

4-238T-39000

4-222T-97572

4-222T-97574

4-222T-97578

123-2-471R-10900°

4-240T-11200

4-240T-11271

CAPACITORS

4-257T-52701

Pan.

Hd.

Screw

W/Spring

_

Washer

3.x

8mm

Hexagon

Hd.

Bolt

2.6

x

6mm

Hexagon

Nut

9¢

Antenna

Coil

Ass‘’y

Lead

Cord

Plug

Socket

P.C.B.

Ass’y,

Tuner

Variable

Capacitor

Trimmer

~—-——7~"OO0O0<<<

MX

Coil

1

F

Filter.

Shield

Plate

Shield

Plate

Shield

Plate

Rotary

Switch

Push

Switch

»

Semi-Variable

Resistor

1K

ohm

Semi-Variable

Resistor

5K

ohm

Semi-Variable

Resistor

{OOK

ohm

Core

Socket,

3p

Socket,

4p

IC

LA3350

S

1C

LB1426

Transistor

2K212

Transistor

2SC2840

Transistor

2SC930

CONV

Transistor

2SC1571

|

Transistor

2SC930

IF

Transistor

2SC930

IF

Transistor

2SC536

AUD

Transistor

2SC945

Transistor

2SA608

Transistor

2SD325

_

Zener Diode

GZA13Y

Diode

1$189

Diode

1$189

Diode

18189

Diode

DS442X

Diode

DS17

Diode

DS18

Ceramic

1pF

NPO

40.5pF

50V

Ceramic

2pF

+0.25pF

50V

Ceramic

3pF

NPO

£0.25pF

S50V

|

Ceramic

6pF

+0.25pF

50V

Ceramic

10pF

NPO

+0.5pF

50V

Ceramic

6p>F

NPO

+5%

50V

Ceramic

15pF

+5%

50V

CORN)

=

A)

G)

=

A}

=

oh

ob

ak

eek ooh

awh

woh

ab

oh

PARTS

LIST

10121

Ceramic

15pF

N1500

410%

50V}

1

-Ci01

Ceramic

18pF

N220

+5%

50V

1

)

C105

Ceramic

18pF

N220

+5%

50V

1

316,

C113

Ceramic

18pF

N220

+5%

50V

1

R212

470

ohm

1

C102

Ceramic

20pF

§§§

45%

50V

1

R201

560

ohm

1

C210

Ceramic

30pF'N750

+*5%

50V

|

1

R208

680

ohm

1

C115.

Ceramic

33pF

NPO

45%

50V

1

R118,217,

1K

ohm

6

C221

Ceramic

100pF

5%

SOV

1

218,219,

C109

Ceramic

220pF

15%

50V

i

220,224

:

C216

_

Ceramic

220pF

45%

50V

1

R215,324,

1.5K

ohm

3

C307,311

Ceramic

560pF

+10%

5OV

2

205

.

C104,217,

Ceramic

0.001nF

+10%

SOV

<

R334,335,

33

ohm

3

218

:

336

1.

C204,208

Ceramic

0.0047pF

£10%

50V

|

2

R308

,309

2.2K

ohm

2

C124

~

Ceramic

2p

NPO

+0.25pF

50V

1

Rii1

2.7K

ohm

1

C130

|

Ceramic

180pF

NPO+5%

SOV

1

R107,115,

3.3K

ohm

6

C125

.

Ceramic

33pF

+5%

50V

1

R303,304,

| 7

C337

+

Ceramic

100pF

-

+5%

50V

1

305,321

~

C132

Ceramic

220pF

+5%°

50V

1

R325,122

5.6K

ohm

2

C140

;

Ceramic

47pF

.

5%

50V

1

R318,319

4.7K

ohm

2

C141,

143

|

.

Ceramic

0.01nF

+80—20%

50V

2

R105,221,

5.6K

ohm

3

C142

=

Ceramic

0.022uF

+80—20%

50V;

1

222.

C103,110,

Ceramic

0.

OipF

+80—20%

"14

R306,307,|

|

8.2K

ohm

5

141,112,

50V

310,314,

117,201,

320

.

202,203,

R114,213,

10K

ohm

7

325,333,

126,132,

334,335,

331,223,

336,133

344

:

C112,205,

Ceramic

0.022uF

+80—20%

10

R233

1.2K

ohm

1

207,211,

5OV

|

R127

,231,

3.3K

ohm

4

212,213,

234,134

223,225,

R135,130

1K

ohm.

2

316,222

foe

R110,119

12K

ohm

2

C127

BC

Con

0.0033nF

220%

50V

1

R109,204,

15K

ohm

4

C308

,312,

BC

Con

0.0022nF

+20%

25V

2

226

333

C118,119,

~~

BC

Con

0.01nF

+20%

25V

4

R

106,203,

22K

ohm

4

219,220

|

225,302

C315

|

BC

Con

0.047pF

+20%

25V

1

R113,125

39K

ohm.

2

C310,314

|

°

BC

Con

0.0033uF

+20%

25V

2

R322

328,

56K

ohm

3

C302,303

-

BC

Con0.015uF

+20%

25V

2

229

C227

|}

BCCon0.047uF

+20%

25V

1

R332

~

|

68K

ohm

1

Ci20

Styrol

340pF

+5%

50V

1

R214

82K

ohm

1

C317

|

PP

Con0.0015nF

15%

100V

1

R101,227,

|.

100K

ohm

5

C228

BC

Con

0.01uF

+20%

25V

1

228,313,

.

'

C332

Electrolytic

470uF

25V

oo

317

-

C329

Electrolytic

470uF

16V

1

R327

...

1.450K.0hm

1

C301

Electrolytic

220uF

16V

1

R123

.

100K

ohm

1

C331

Electrolytic

100nF

25V

1

R230

27K

ohm

1

C214,330

|

Electrolytic

100uF

16V

2

R323

18K

ohm

1

C328

| .

Ps

Electrolytic

10uF

16V

1

R311,315

470K

ohm

2

C229

Electrolytic

4.7uF

25V

1

R330

1M

ohm

1

i

C215,224,|

j

Electrolytic

47

BF

25V

8

H

R2

2

|

H

390K

chm

:

Hy

1

306,326,

|

R301

Solid

82

ohm

P-type

“ZW,

+10%

4

321,324

:

|

-R337

100

ohm

P-type

#%W,

£10%

4

C309,313

Electrolytic

O.14F

50V

2

R340

Solid

390

ohm

P-type

“%W

+10%

|}

1

C320,327

2

Electrolytic

1F

50V

2

R338

FP

5.6

ohm

P-type

%4W

£5%

1

C304

,305

|

Electrolytic

O.1uF

SOV

2

R341

Metal

150

ohm

P-type

2W

15%

1

C318,322

|

.

Electrolytic

0.47uF

50V

2

R342

Solid

470

ohm

P-type

“ZW

410%}.

1

C323

Electrolytic

1uF

50V

4

R131

390K

ohm

1

C319

Electrolytic

0.22uF

50V

1

:

C226

Electrolytic

10uF

25V

1

:

|

C128

{1

Styrol

250pF

+5%

50V

1

C126

©

BC

Con

0.0022uF

+20%

25V

1

METER

LED

P.

C.

B.

ASS’Y

RESISTORS

141~4-250T-64200

|

P.C.B.

Ass‘y,

Meter

LED

Alt

Resistors

are

Carbon

T-type

+5%,

“W,

unless

LED

SIP151B

Red

otherwise

noted.

|

LED

SLP251B

Green

R102,117,

10

ohm

.

3

128.

R112,211,

56

ohm

3

124

| |

-R108,116,

100

ohm

6

209,326,

329,121

es

R216

%

|

180

ohm

1

R206

a

220

ohm

1

R103

,104

;

270

ohm

2

PARTS

LIST

|

EXPLODED

VIEW

rom]

rome

|

__en_itn

POWER

SWITCH

P.

C.

B.

ASS’Y

141-4-250T-15901

P.C.B.

Ass’‘y,

Power

Switch

4-238T-41200

|

Push

Switch

Ceramic

0.01uF

+80—20%

50V

LAMP

P,

C.

B.

ASS’Y

141-4-250T-64300

4-612T-17400

P.C.B.

Ass’y,

Lamp

|

Lamp

POINTER

LED

P.

C.

B.

ASS’Y

P.C.B.

Ass’y,

Pointer

LED

)

LED

SLP135BB

Red

141-4-250T-18902

OUTPUT

P.

C.

B.

ASS'Y

1414-233T-22502

P.C.B.

Ass’y,

Output

4-265R-12600

|

VHF

Coil

Ceramic

47pF

+10%

50V

|.

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