Sanyo JA 250 Bedienungsanleitung

SERVICE

MANUAL

PWER

AMPLIFIER

JA

250

(EUROPE)

This

is

a

service

manual

for

mode!

JA250

and

only

items

changed

from

model

JA300

are

indicated.

For

other

items,

refer

to

Service

Manual

for

model

JA300

(WM-8507).

#

mark

represents

a

non-interchangeable

part.

(PACKING

&

ACCESSORY)

141-6-133T-38802

141-6-133T-46

100

Individual

Carton

=

141-6-410T-81802

141-6-410T-93100

Instruction

Manual

#

(CABINET)

,

1

141-0-122T-46500

141-0-122T-46501

Front

Panel

Assy

#

3

141-2-163T-91900 141-2-163T-91930

Rotary

Knob,

Function

#

4

141-2-163T-81730

141-2-163T-81740

Rotary

Knob,

Volume

#

6

141-2-160T-09700

141-2-160T-09701

Push

Button

#

7

141-2-160T-16500

141-2-160T-16501

Push

Button,

Power

SW

#

(CHASSIS)

13

141-2-126T-41302

141-2-126T-41307

Back

Lid

_

#

25

141-2-453T-01701

(Not

used)

Washer

3x10

x

Imm

)

(Add)

141-2-421T-43900

Special

Screw

Add

this

sheet

to

Model

JA300

Service

Manual.

SANYO

ELECTRIC

TRADING

CO.,

LTD.

33,

Hoyoshi-cho

2-chome,

Moriguchi-shi,

Osaka-fu,

570

Japan.

Apr./'83/2000

KA

Printed

in

Japan

WM-9992

NOTE:

The

below

mentioned

specifications

are

mainly

based

on

the

IHF

measurements

standard.

directly

be

compared

with

specifications

based

on

the

DIN

standard

or

ther

standards.

Continous

output

power

.......

re

e

8

# @

@#

Total

harmonic

distortion

Input

sensitivity

and

impedance

PHONO”

s63725

oars

ee

ea

Sees

AUX/TUNER/TAPE

PLAY

.

Phono

overload

level

..........

Output

level

PACE

OREC

oo

eso

ee

tees

Frequency

response

ss

8

#*

©

@

8&8

@

6

SPECIFICATIONS

25W

x

2

(at

8.ohms,

0.3%

distortion)

0.1%

(20

W

output,

8

ohms)

2.5

mV/47

kohms

.

180

mV/47

kohms

130

mV

RMS

(at

1kHz)

150mV

20

—

20000

Hz

Graphic

equalizer

controls

...

High

filter

response

........

Loudness

control

response

100

Hz/10

kHz

Power

consumption

Weight

(Approx.)

.........

Specifications

subject

to

change

without

notice.

Signal

to

noise

ratio

.......

Power

requirements

.......

AC

output

socket

.........

Dimensions

(Approx.)

......

They

can

therefore

not

Shama

+10

dB

(63/250/1000/

4000/16000

Hz)

eee

7

kHz

(—6

dB/oct.)

Satoh

We

+8

dB/+4

dB

ie

hee

90

dB

ay

hea

ees

AC:

220V,

50Hz

ere

130

W

5

Sb,

ase

AC:

18

V,

300

mA

satan

420

(W)

x

220

(D)

x

85

(H)

mm

(16-1/2”

x

8-5/8”

x3-3/8"’)

BS

ach

es

4

kg

(9

Ibs.)

WM-8507

AS

DISMOUNTING

OF

CABINET

AND

FRONT

PANEL

e@

_

Perform

disassembly

of

amplifier

after

removing

the

power

supply

cord

with

out

fail.

@

Revove

parts

in

order

of

disassembly

as

numdered.

1.

TO

DISMOUNT

CABINET

(1).

Take

out

total

4

screws

(Binding

head

tapping

4

x

8mm

1)

from

cabinet.

|

(2).

Take

out

1

screw

(Binding

head

tapping

3

x

6mm

2

)

from

cabinet.

2.

TO

DISMOUNT

FRONT

—

PANEL

(1).

Remove

volume

control

knob

and

function

select

knob.

(2).

Take

out

total

6

screws

(Binding

head

tapping

3

x

12mm

6)

from

front

panel.

ADJUSTMENT

OF

BIAS

.

CONDITIONS

VOLUME

KNOB

:

“0°

(Minimum)

GRAPHIC

EQUALIZER

KNOB

~

:

*“Q"”

(Center)

BALANCE

KNOB

:

“0”

(Center)

FUNCTION

KNOB

:

“aux”

MONITOR

BUTTON

:

“source”

H!

—

FILTER

BUTTON

:

“off”

LOUDNESS

BUTTON

:

a

©

oh

i

ad

SPEAKER

BUTTON

:

“on”

Note

:

No-input

@

No-Load

@

Lol

To

DC

Volt

Meter

—-/+

SVR701

To

DC

Volt

Meter

(L-ch)

SVR

801

(R-ch)

MAIN

AMP

PCB

After

the

power

switch

is

turned

on,

adjust

SVR701

and

SVR801

respectively

as

follows.

1

—

Channel

:

SVR701

for

3mV+0.5mV

reading

beteen

the

both

leads

of

R758.

R

—

Channel

:

SVR801

for

3mV+0.5mV

reading

beteen

the

both

leads

of

R858.

EXPLODED

VIEW

PARTS

LIST

PARTS

LIST

Description

PACKING

&

ACCESSORY

141-6-133T-38

802

GRAPHIC

EQUALIZER

AMP

P.

C.

B.

ASS'Y

MAIN

AMP

P.

C.B.

ASS'Y

PHONO

AMP

C.

B.

ASS’Y

Individual

Carton

141-4-250T-61671

|

P.C.B.

Ass’y,

Phono

Amp

1

71

1

76

141-4-250T-62102

|

P.C.B.

Ass’y,

Graphic

1

77

141-4-250T-62273

|

P.C.B.

Ass’y,

Main

Amp

PCB

1

141-6-144T-8&000

|

Foam

Plastic

Case

2

|

4-240T-06900

|

Socket,

4p

RCA

1

|

Equalizer

Amp

P.C.B.

4-240T-11276

|

Socket,

9p

1

141-6-331T-11

600

|

Protector

Sheet

1

4-240T-07000

|

Socket,6p

RCA

1

Q709,809

Transistor

2SA1016

2

.

141-2-381T-04200

|

Bracket

Fuse

4

141-6-231T-3600

|

Inner

Polye

Cover

1

1C701

iC

LA6458SS

1

Q710,711,

Transistor

2SC2362

4

SVR701,801

4-222T-73573

|

Semi-Variabie

Resistor

1K

ohm

2

141-6-410T-81

802

|

Instruction

Manual

1

CAPACITORS

810,811

701,801

4-265T-07930

|

VHF

Coil

2

141-6-415T-32

300

|

Notic,

FTZ

1

C704

,804

Electrolytic

4.7u4F

25V

2

Q706

806

Transistor

2SA608K

2

4-240T-11200

|

Socket,

3p

1

C713,813

Electrolytic

14F

(Nonpolar)

50V,

2

Q701,702,

Transistor

2SC536

AUD

SP

5

Q714,814

Transistor

2SC3179

2

C710,711

Electrolytic

220uF

25V

2

703,704,

ss

Q715,815

Transistor

2SA1262

2

C707

807

Electrolytic

22uF

10V

2

705

Q712,812

Transistor

2SC2274K

2

C708

,808

Mylar

0.018uF

+5%

50V

2

Q801,802,

Transistor

2SC536

AUD

SP

5

Q713,813

Transistor

2SA984K

2

C709,809

Mylar

0.0047uF

15%

SOV

|

2

803

804,

Q716,816

Transistor

2SD612

2

-C712,812

Mytar

0.0039uF

+10%

50V

2

805

D707

807

Diode

DS442

X

2)

.

C706

,806

Mylar

0.0015uF

+10%

50V

2

Q707,708,

Transistor

2SA999

NF

4

D901

902

Diode

DS135

D

4

1

141-0-122T-46500

|

Front

Panel

Ass’y

1

C705,805

Ceramic

220pF

+10%

50V

2

807,808

903

904

2

141-0-1111T-54901

|

Cabinet

Assy

1

C702,703,

Ceramic

0.01yuF

+80—20%

3

D703,801,

Diode

DS442X

4

D906

Diode

DS135D

1

3

141-2-163T-91

900

|

Rotary

Knob

1

701

50V

802,803

4

141-2-163T-8

14

730

|

Rotary

Knob

1

C717,718

Ceramic

0.01uF

+10%

50V

2

D708

Zener

Diode

GZA15Y

1

CAPACITORS

5

141-2-164T-30700

|

Slide

Knob

6

C001,002,

Ceramic

220pF

+10%

50V

6

'

.

C903

,904

4-163T-10100

|

Electrolytic

3300uF

35V

2

6

141-2-160T-09700

|

Push

Button

4

003,004,

CAPACITORS

C907

908

Electrolytic

220uF

35V

2

7

141-2-160T-16500

|

Push

Button,

Power

SW

1

005,006

C909

Electrolytic

220uF

16V

1

C906

Electrolytic

220uF

25V

1

8

141-2-174T-119200

|

Stand

2

RESISTORS

ald

te

Electrolytic

10QuF

oo

2

C739

839

Electrolytic

1uF

(Nonpolar)

5042

;

C730,8

Electrolytic

10uF

16V

2

C902

4-2237T-13771

Capacitor

0.022uF

+20%

200V

1

All

Resistors

are

Carbon

T-type

+5%

‘AW,

unless

C732,832

Electrolytic

4.7uF

25V

2

|

|C738,838

Mylar

0.047uF

+10%

50V|

2

otherwise

noted.

C721,821

Mylar

0.15uF

+10%

50V|

2

C910,911

Mylar

0.1yF

420%

100V|

2

CHASSIS

R703,803

330

ohm

2

C723,823

Mylar

0.334F

+10%

50V|

2

|

C912

Ceramic

O.1uF

+10%

SOV]

1

R706,806

560

ohm

2

C725

825

Mylar

0.0082uF

+10%

50V|

2

C735,835

Ceramic

47pF

+10%

50V|

2

141-2-311T-423800

|

Chassis

1

|

R701,801

1.5K

ohm

2

C727

827

Mylar

0.0018uF

+10%

50V|

2

|

|C743,744,

Ceramic

220pF

§

+10%

50V|

4

141-2-125T-29600

|

Bottom

Lid

1

|

705,805

TSK

ohm

2

C729,829

Mylar

470pF

+10%

50V|

2

843,844

|

141-2-126T-41302

|

Back

Lid

1

|

R702,802

47K

ohm

2

C734

834

Mylar

470pF

+10%

50V|

2

|

{C903

Ceramic

0.1uF

+80—20%

50V|

1

141-2-310T-68400

|

Bracket,

Heat

Sink,

Right

1

|

R707,807

100K

ohm

2

C737

837

Mylar

0.014F

+10%

50V|

2

141-2-310T-68500

|

Bracket,

Heat

Sink,

Left

1

|

R704,804

270K

ohm

2

C731,831

Ceramic

220pF

+10%

50V!

2

RESISTORS

141-2-143T-92601

|

Marking

Plate

1

R700

10

ohm

i

C742,842

Ceramic

3pF

+10%

50V

2

All

Resistors

are

Carbon

T-type

15%,

%W

unless

141-2-329T-08700

|

Reflector

1

|

R0O1,002,

aS

On

6

C913

Mylar.470pF

+10%

50V|

1

otherwise

noted.

441-2-464T-14400

|

Fixer,

AC

Cord

1

003,004,

RESISTORS

R758,759,

Metal

0.33

ohm

P-type

1W

4

141-2-310T-69700

|

Bracket

1

005

,006

All

Resistors

are

Carbon

T-type

45%

%W,

unless

858

859

|

141-2-135T-86702

|

Cover

1

otherwise

noted.

R760

860

FP-Carbon

5.6

ohm

P-type

AW

2

141-2-464T-40500

|

Fixer

1

FUNCTION

SWITCH

P.

C.

B.

R752

852

FP-Carbon

390

ohm

P-type

2

R901

FP-Carbon

1

ohm

P-type

1

141-2-464T-29900

|

Fixer

1

R908

FP-Carbon

4.7K

ohm

P-type

1

R757,857

FP-Carbon

82

ohm

P-type

2

141-2-421T-28800

|

Special

Screw

1

141-4-250T-61771

|

P.C.B.

Ass’y,

Function

Switch

R749

849

15K

ohm

2

R762,763

FP-Carbon

33

ohm

P-type

2

141-2-464T-20600

|

Fixer

5

4-238T-56000

|

Rotary

Switch

R742,842

330K

ohm

2

R906

Metal

82

ohm

P-type

1W

1

141-2-453T-01701

|

Washer

3

x

10x

Imm

1

R725,726,

150K

ohm

5

R909

Metal

100

ohm

P-type

2W

1

727,728,

R748

848

56K

ohm

2

729

R764

864

100K

ohm

2

SWITCH

P.

C.

B.

ASS’Y

R825

,826,

150K

ohm

5

R903,904

2.2K

ohm

2

827,828

R775

875

1.5K

ohm

2

73

141-4-250T-61871

|

P.C.B.

Ass’y,

Switch

829

R774,874

3.9K

ohm

2

Pan

Hd.

Screw

2

x

4mm

$5

6,7

4-238T-56100-

|

Push

Switch

R720,721,

56K

ohm

5

R865

3.3K

ohm

1

Pan.

Hd.

Tapping

Screw

722,723,

R907

Metal

330

ohm

P-type

2W

1

W/Washer

3

x

6mm

CAPACITORS

724

R902

,905

FP-Carbon

1.5K

ohm

P-type

2

Pan.

Hd.

Tapping

Screw

C716,816

Mylar

0.056uF

+10%

50V

R820,821,

56K

ohm

5

R761,861

FP-Carbon

10

ohm

P-type

“W

2

W/Washer

3

x

8mm

C714,814

Mylar

0.0068uF

+10%

50V

822,823,

Pan.

Hd.

Tapping

Screw

C715,815

Ceramic

150pF

+10%

50V

824

W/Washer

4

x

8mm

R730,731,

15K

ohm

5

SPEAKER

SWITCH

P.C.

B.

ASS’Y

Binding

Hd.

Screw

3

x

6mm

RESISTORS

732,733,

Binding

Hd.

Screw

3

x

8mm

R710,711,

1M

ohm

734

78

141-4-250T-62373

|

P.C.B.

Ass’y,

Speaker

Switch

1

Binding

Hd.

Tapping

Screw

810,811

R830,831,

15K

ohm

5

S2

4-238T-49700

|

Switch

1

3x

6mm

R712,812

10K

ohm

832,833,

Binding

Hd.

Tapping

Screw

R709

809

3.3K

ohm

834

3

x

8mm

R744,745,

10K

ohm

4

Binding

Hd.

Tapping

Screw

,

844

845

HEADPHONE

P.

C.

B.

ASS’Y

|

3

x

10mm

:

R735,736,

1K

ohm

5

Binding

Hd.

Tapping

Screw

VOLUME

P.

C.

B.

ASS’Y

737,738,

79

141-4-250T-62402

|

P.C.B.

Ass’y,

Headphone

1

3

x

12mm

=

739

4-240T-29971

|

Socket

:

1

Binding

Hd.

Tapping

Screw

74

141-4-250T-61971

|

P.C.B.

Ass’y,

Volume

R835

836,

1K

ohm

5

R766,866

FP-Carbon

270

ohm

P-type ZW}

2

4x8mm

VR701,801

4-220T-03400

|

Variable

Resistors

837,838,

Spring

Washer

3

x

10

x

1t

839

External

Tooth

Lock

Washer

R746,846

1.5K

ohm

2

3x

6.5t

x

0.45t

R747

847

330

ohm

2

AC

POWER

SWITCH

P.C.

B.

ASS’Y

GRAPHIC

EQUALIZER

CONTROL

P.

C.

B.

ASS'Y

R750,751,

27

ohm

4

3

:

Sse

ont

are

Aniee

Boe

Seren

;

2,

141-4-250T-62573

|

P.C.B.

Ass’y,

AC

Power

Switch

S

175

141-4-250

C.B.

Ass'y,

Graphic

Equalizer

:

ohm

4-238T-30100

|

Switch,

Power

ELECTRICAL

PART

|

Control

R743

843

3.3K

ohm

2

|

|c901

4-223T-12100

|

Capacitor

0.01uF

400V

4-300T-GO600

|

Power

Transformer

1

VR703,704,

4-220T-03500

|

Variable

Resistor

5

R741,

5.6K

ohm

1

141-4-381T-04200

|

Bracket

Fuse.

4-243T-84971

|

Power

Cord

;

705,706,707

|

141-2-368T-26100

|

Heat

Sink

4-240T-16571

|

Socket,

TUNER

AC

1

‘CAPACITORS

:

.

4-234T-10583

|

Fuse,

T800mA

250V

(F901)

1

C720,820

Electrolytic

1uF

50V

2

4-234T-10588

|

Fuse,

T2.0A

250V

(F701,801)

2

C722,822

Electrolytic

0.33uF

50V

2

141-2-243T

09800

|

Base

.

4

C724

824

Mylar

0.082uF

+10%

50V

2

141-2-327T-26100

|

Insulator

6

C726,826

Mylar

0.022uF

+10%

50V

2

C728

828

Mylar

0.0047

uF

+10%

50V

2

SCHEMATIC

DIAGRAM

M

|

[

MAIN

AMP

PCB.

POWER

SWITCH

PcBIA\

|

PHONO

AMP

PCB.

1C701(1/2)

AN

O

:

0901

0S135D

R701.

1.5K

ger,

m3,

Neer

5

iy

o

R903

1

+

601

704

Jerns

od

oat:

in|

|

SWITCH

|

VOLUME

seal

ree

A

ee

|

cB.

jPce.

ia

a

3

:

i]

:

fy

VR7

01

8

250KCX2

‘

C=)

he

']

i]

A

et

3/5V

dita

'

A

220V

&110V

2

50H

PHONO

(S)

its.

>

>|

2

C717

a

~“

gla

0,01

bay

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Q816

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REC

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AC

18V

|

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PCB.

FUNCTION

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TERMINAL

PCB.

LAMP

PCB

mae

HEADPHONE.

PCB,

R768.

VR701

t|

|

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801

VOLUME

PCB.

SPEAKER

SWITCH

PCB.

HEADPHONE

LED

METER

PCB.

BALANCE

PCB.

GRAPHIC

EQUALIZER

CONTROL

PCB

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805

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SWITCH

PCB.

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BA6124

PARTS

LIST

mom

[mm

[om

[ow

LAMP

P.

C.

B.

ASS’'Y

141-4-250T

62674

P.C.B.

Ass’y,

Lamp

4612T-17400

|

Lamp

12V,

100mA

SPEAKER

TERMINAL

P.

C.

B.

ASS’Y

141-4-250T-62773

|

P.C.B.

Ass’y,

Speaker

Terminal

4-237T-110717

Terminal

Board

009,

‘010

C007

,008

Mylar

0.0056uF

+£10%

50V

LED

METER

P.

C.

B.

ASS‘Y

|

141-4-250T-645714}

P.C.B.

Ass’y,

LED

Meter

iC

LB1403

)

Ic

BA6124/°°

LED

SLP251B

Green

Electrolytic

10nF

16V

Carbon

10K

ohm

T-type

“W

BALANCE

P.C.

B.

ASS’Y

141-4-250T-6467

1

P.C.B.

Assy,

Balance

4-220T-03600

|

Variable

Resistor

Carbon

1K

ohm

T-type

4W

Carbon

1K

ohm

P-type

“W

IC

BLOCK

DIAGRAM

LA

6458S

(Dual

Operation

Amplifier)

_

Vcc

BA6124

(LED

Level

Meter)

ee

Constant

Curtent

SANYO

ELECTRIC

TRADING

CO.,

LTD.

33,

-Hiyoshi-cho

2-chome,

Moriguchi-shi,

Osaka-fu,

570

Japan.

Aug./’82/2000

KM

Printed

in

Japan.

Sanyo JA 250 Bedienungsanleitung

Beliebte Verstärker Handbücher anderer Marken