Onkyo A-8870 User manual

ONKY-00296

Ref.

No.

3404

ONKYO.

SERVICE

MANUAL

integrated

Stereo

Amplifier

MODEL

A-8870

Black

and

silver

models

SAFETY-RELATED

COMPONENT

WARNING!!

TAB

LE

O

F

CONTE

NTS

COMPONENTS

IDENTIFIED

BY

MARK

A

ON

THE

SCHEMATIC

DIAGRAM

AND

IN

THEPARTS

LIST

ARE

CRITI-

Specifications

is

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CALFOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

Precautions:

i.cccc

standin

aset

add

tol

cage

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THESE

COMPONENTS

WITH

ONKYO

PARTS

WHOSE

PARTS

Adjustment

procedures

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NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL.

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block

diagram:

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MAKE

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OR

RESISTANCE

MEASURE-

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diagram

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ten

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7

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TO

DETERMINE

THAT

EXPOSED

PARTS

ARE

AC-

Chassis

exploded

view

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tees

9

CEPTABLY

INSULATED

FROM

THE

SUPPLY

CIRCUIT

Printed

circuit

board

parts

list

..

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12

BEFORE

RETURNING

THE

APPLIANCE

TO

THE

CUS-

Printed

circuit

board

View

2...

6.

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16

TOMER.

Schematic

diagram

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Front

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System

CONNECTIONS

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25

ONKYO

AUDIO

COMPONENTS

A-8870

SPECIFICATIONS

Power

Output:

105

watts

per

channel,

min.

RMS,

at

8

ohms,

both

channels

driven

from

20

Hz

to

20

kHz,

with

no

more

than

0.008%

Total

harmonic

distortion.

Dynamic

Power:

303

watts

at

2

ohms,

235

watts

at

4

ohms

155

watts

at

8

ohms

Total

Harmonic

Distortion

0.008%

at

rated

power

0.008%

at

1

watt

output

Intermodulation

Distortion:

0.005%

at

rated

power

Damping

Factor:

150

at

8

ohms

(1

kHz)

Input

Sensitivity/

Phono

(MM):

2.5

mV/50

kohms

Impedance:

Phono

(MC):

160

1V/130

ohms

CD:

150

mV/30

kohms

TUNER:

150

mV/30

kohms

Tape

Play:

150

mV/30

kohms

Output

Level/Impedance:

Tape

Rec:

150

mV/1.0

kohms

(Phono)

Phono

Overload:

Phono

(MM):

200

mV

RMS.

at

1

kHz,

0.012%

THD.

Tone

Control

{Vol

-20

dB):

BASS:

+8

dB

at

100

Hz

TREBLE:

+8

dB

at

10

kHz

High

Cut:

6

kHz

(6

dB/Octave)

(TREBLE

min.)

Frequency

Response:

CD,

Tuner:

2

Hz-50

kHz

(+0,

~1

dB)

RIAA

Deviation:

Phono

(MM):

+0.3

dB,

20 Hz

~20

kHz

Subsonic

Filter:

20Hz

(-3dB,

6dB/Oct)

Signal

to

Noise

Phono

(MM):

94

dB

(5.0

mV

input)

Ratio

(\HF-A):

Phono

(MC):

75

dB

(0.5

mV

input)

CD

(DIRECT):

107

dB

Attenuator:

-20

dB

Muting:

~

09

Power

Supply:

European

models:

AC230V,

50 Hz

Dimensions

(W

x

H

x

D):455

x

170

x

420

mm

17-15/16"

x

6-11/16"

x

16-9/16"

Weight:

16.7

kg

Specifications

and

features

are

subject

to

change

without

notice.

PRECAUTIONS

1.

Replacing

the

fuses

For

continued

protection

against

risk

fire,

replace

only

with

same

type

and

same

rating

fuse.

CIRCUIT

NO.

PART

NO.

DESCRIPTION

F901

252075

2.5A-SE-EAK,

Primary

fuse

F902

252077

4A-SE-EAK,

Primary

fuse

A-8870

ADJUSTMENT

PROCEDURES

Adjustments

and

Checking

the

Protection

Circuitry

1.

Preparations

1)

Place

the

unit

on

the

workbench.

(There

should

be

about

15

mm

of

space

between

the

base

plate

of

the

unit

and

the

work

surface.)

2)

Set

up

the

unit

as

follows.

(1)

No

load

(2)

No

signal

(3)

Volume

turned

all

the

way

down

(4)

Speaker

switch

OFF

(5)

Power

switch

OFF

Note)

Check

the

following

points

before

making

adjustments

(1)

The

power

switch

should

be

OFF.

(2)

The

interior

of

the

unit

should

not

be

warm.

2.

Idling

current

adjustment

1)

Turn

the

power

switch

ON

and

allow

the

unit

to

warm

up

for

about

10

minutes.

(1)

Adjust

R535

(R536)

so

that

the

voltage

at

test

point

VCT-IID

on

the

NAAF-4209

circuit

board

is

I5mV+5mV,

Note)

Semi-fixed

resistors

enclosed

in

parentheses

(

)

are

for

the

right

channel.

3.

Check

of

operation

of

protection

circuitry

1)

Check

of

operation

of

protection

relay

(1)

Confirm

that

the

relay

turns

ON

approximately

5

seconds

after

the

power

switch

is

turned

ON.

(2)

The

SERVO

indicator

LED

should

light

at

the

same

time.

(3)

The

relay

should

turn

OFF

approximately

0.5

seconds

after

the

power

switch

is

turned

OFF.

2)

Check

of

DC

detection

and

servo

circuitry

operation

(1)

Turn

the

power

on

with

no

load.

(2)

After

the

speaker

relay

turns

ON,

apply

DC+200mV

to

the

CD

input

terminals.

Confirm

that

the

relay

turns

OFF.

(3)

Confirm

that

operation

is

the

same

as

(2)

above

when

an

input

of

DC—200mV

is

applied.

Note)

Under

no

circumstances

connect

a

load

or

short

the

speaker

terminals

when

performing

the

above

test.

3)

Signal

input

from

the

circuit

illustrated

below

with

no

load.

(1)

Confirm

that

the

speaker

relay

does

not

turn

OFF

even

when

a

2

ohm

load

is

connected

when

a

peak

value

of

30Vp

is

Output.

(2)

Next,

confirm

that

when

a

1

ohm

load

is

connected

the

speaker

relay

switchse

OFF

and

ON

a

couple

oftames

and

then

stays

OFF.

Note)

The

period

before

that

relay

stays

OFF

should

not

last

for

more

than

1

minute.

Relay

OFF

status

can

be

canceled

by

switching

the

power

OFF.

Low-frequency

oscillator

Auplifier

SP

Load

OUT

:

resistance

Differe-

ntiator

Attenua~

tor

Square

wave

The

unit’s

volume

50Hz,

1!0V¥

p-p

control

may

also

be

used.

Oscillo-

scope

3.3

KQ

0.1

uF

3.3

KQ

OUTPUT

Square

wave

input

from

low-frequency

oscillator

10

kQ

50

Hz,

10V

p-p

Ws

A-8870

IC

BLOCK

DIAGRAM

RECMUT

TMP47C440AN

(Microprocessor)

a

INPUT

a

2

0

SELECTOR

}

+5V

+5.6V

Q

TMP47C440AN

+5V

o

1

BACKUP

2

Z

3

4,

POWER

INPMUT

4

L

REC

MUT:

§

;

5

-

7

VOL

UP/DOWN

8

:

SEL

UP/DOWN

10

op

|

13

|

Lt

|

6

|

45

6p—

_—'!_hoxa

Ley

18

|

Le

8 |

Lepe=

20

|

Description

Analog

reference

voltage

for

A/D

conversion

Analog

reference

GND

for

A/D

conversion

Input

Selector,

Power

key

input

terminal.

To

read

Input

Selector

and

Power

key

by

means

of

A/D

conversion

Muting

output

terminal

for

Main

amplifier

input.

Active

“H”

Muting

output

terminal

for

Rec.

output.

Active

“H”

To

be

output

when

switching

Input

Selector.

To

be

output

continuously

in

case

of

Input

Selector

TAPE-1,

TAPE-2,

DAT,

and

DIGITAL-4.

Contro!

output

terminal

for

PLAYER.

PLAYER

“L”

will

be

output

for

200ms

if

input

K64

code

for

remote

control

and

set

Input

Selector

for

PHONO.

VOL

DOWN

UP/DOWN

output

terminal

for

volume.

Active

“H”

In

case

of

UP

(DOWN),

VOL

UP

outpout

will

be

“H”

(“L”),

while

VOL

DOWN

output

will

be

“L”

VOL

UP

(“H").

When

not

moving,

both

outputs

shall

be

“H”

(Brake).

ie

2

;

SEL

DOWN

UP/DOWN

output

terminal

for

Input

Selector.

Active

“H”

In

case

of

UP

(DOWN),

SEL

UP

output

will

be

“H”

(“L”),

While

SEL

DOWN

output

will

be

“L”

(“H”).

SEL

UP

When

not

moving,

both

outputs

shall

be

“1H”

(Brake).

{1

SI

; a

Gor

Ae

aes

Output

terminal

for

switching

digital

signal.

S2

Switch

as

follows

through

the

position

of

Input

Selector.

$3

Input

selector

Output

$3

Output

$2

Output

SI

DIGITAL-|

DIGITAL-2

DIGITAL-3

DIGITAL-4

Others

(Analog)

EXP/JPN

Input

terminal

for

remote

control

initialization

when

energizing.

—~4-

A-8870

No.

Symbol!

Description

15

DIG-4/MODE

Output

terminal

for

Input

Selector

display.

Output

of

the

position

currently

selected

will

be

“L”

16

DIG-3

:

(lighted).

17

DIG-2/AUX-2

DIG-4/MODE

output

will

be

input

terminal

MODE

for

initializtion

of

operation

switch

when

Pp

18

RIG

aU)

energizing.

19

CD

Outtput

DIG-1/AUX-1,

DIG-2/AUX-2

will

be

switched

by

initializing

MODE

into;

20

TUNER

DIG-1/AUX-1

|

DIG-2/AUX-2

AUX-1

AUX-2

DIG-1

DIG-2

21

L

|

GND

terminal

22

PHONO

23

DAT

Output

terminal

for

Input

Selector

display.

74

TAPE-1

The

output

of

the

positon

currently

selected

will

be

“L

(lighted).

25

TAPE-2

26

ENCD!

97

ENCD2

Input

terminal

for

detecting

position

of

rotary

sw

of

input

Selector.

28

ENCD3

To

be

connected

with

Encoder

output

for

position

detecting

of

Rotary

sw.

29

ENCD4

30

TEST

To

be

connected

with

GND.

31

XIN

;

: ; '

Terminal

for

connecting

with

ceramic

oscillator

(4

MHz)

32

XOUT

33

RESET

Input

terminal

for

reset

signal.

Active

“L”

Input

terminal

for

detecting

power

suspension.

34

POFF

Take

a

countermeasure

as

soon

as

possible

against

power

failure

when

turned

into

“L”.

Setat

HOLD

mode.

Input

terminal

for

detecting

Rotary

sw

position

of

Input

Selector.

35

ENCDS

‘

wd

:

To

be

connected

with

Encoder

output

for

position

detecting

of

Rotary

sw.

__—---|___-

36

SYS

OUT/SYS

EN

Ouptut

terminal

for

System

code.

Active

“L”

to

be

turned

into

SYS

EN

for

initialization

input

when

energizing.

37

REM

IN

Input

terminal

for

remote

control

signal.

Active

L

To

be

connected

with

output

of

photoreceivin

unit.

38

SYS

IN

Input

terminal

for

System

code.

Active

“H”.

\

39

M.

IND

Output

terminal

for

Muting

display.

Lighted

in

case

of

“L”

:

To

be

set

“L”

when

Muting

of

remote

control

is

ON.

Output

terminal

for

Standby

display.

Lighted

incase

of

“L”

40

STANBY

To

be

turned

into

“L”

when

Power

is

OFF.

L

Except

the

case

of

power

susupension,

the

level

inverted

of

Power

output

is

always

output,

41

POWER

Output

terminal

for

Power

control.

““L”

When

Power

is

ON

42

VDD

Power

(+5V)

Conntecting

terminal.

LB1638

(Motor

drive)

Tauth

Table

OUT

|

OUT2

7

9

IN

2}

OUT1}OUT2|

t-F

—_

NORMAL

REVERSE

L

H

L

A-8870

|

TA7291S

(Motor

drive)

M51943BSL

(System

reset)

+tnput

2

[5

]

10]

+

INPUT

3

yy

~tnPUT

2[6]

-INPUT

3

OUTPUT

2

18

Jourtput

3

TA7317P

(Protective

circuit)

8

9

O

REGULATOR

CIRCUIT

SHUMITT

RELAY

DRIVE

CIRCUIT

POWER

ON-OFF

DETECTION

CIRCUIT

OVER

CURRENT

OETECTION

CIRCUIT

¢

DIRECT

VOLTAGE

OETECTION

IR

T

OISCHARGE

CIRCUIT

SuB

STRAIGHT

-----

~O-

O

A-8870

BLOCK

DIAGRAM

REC

SELECTOR

SOURCE

DIRECT

POWER

AMP.

|

RECO

VOLUME

ia

|

RELAY

TAPE

R321

O

-——_————_©

A

-2

4

PLAYO

|

Q803

ee

we

REBSI

SPEAKERS

MOTOR

©

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Ss

ot

DRIVE

RLe@52

COM

RECO

Rch=—y

Ls

PHONES

TAPE-—

VFS

a

ATTENUATOR

BALANCE

TONE

PLAY©)

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&)

CONTROL

SUBSONIC

PROTECTOR’

62)—

+B6

Q<)

MODE

ase

QB53

COM

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REC

©

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TREBLE

BASS

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2810.

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POWER

LS

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ENCODER

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PROCESSOR

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INPUT

PowER4-

seLector

(¥)(¥)

$852

MIND

+BIO

SYSTEM

aeos

VOLTAGE

Q805

ey

ae

-~8-

ONKY-00296

/

Druck:1

A-8870

CHASSIS-EXPLODED

VIEW

A047

A304

A006

UOI5

P005

P903

u002

A044

T901

AQl6

A012

=49=—

ONKY-00296

/

Druck:2

_

A-8870

CHASSIS

EXPLODED

VIEW

PARTS

LIST

REF.

NO.

PART

NO.

DESCRIPTION

REF.

NO.

PART

NO.

DESCRIPTION

A00!

27110588-1C

|

FRONT

BRACKET

A632

27170272A

BOTTOM

BOARD

(R)

A002

27270212

SPACER

A633

28141024

20

x

240

x

2.5T,

CUSHION

A003

27270326A

SPACER

(VOL)

A634

-

27270212

SPACER

A006

QN21479A

BACK

PANEL

A636

27175251

LEG

ASS'Y

A009

-

28140859

6020

1.5T,

CUSHION

A810

28324083A

KNOB

(VOL)

[BLK]

AOIO

28140695

25x

240

X1.5T,

CUSHION

A810

28324413A

KNOB(VOL)

[SIL]

AOL

27130622A

BRACKET

(SHIELD)

A811

28324084A

KNOB

(SEL)

[BLK]

A012

27130623

BRACKET

(L)

A8II

28324084-2

KNOB

(SEL)

[SIL]

A013

27130624

BRACKET

(R)

A812

28324085B

KNOB

(D)

[BLK]

AOI4

27130656A

BRACKET

(C)

A812

28324085-2

KNOB

(D)

[SIL]

AOIS

28170025

BUSHING

A813

28324086

KNOB

(SP)

[BLK]

AOI7

27130627

BRACKET

(EQ)

A814

28324411

KNOB

(TONE)

[BLK]

A020

27300833

WS-2NS,

CRAMP

A814

28324412

KNOB

(TONE)

{SIL]

A022

27300750

#2271,

BUSHING

(AC

CORD)

ARIS

283240884

KNOB

(PUSH)

[BLK]

A023

27270213

SPACER

(PT)

A8I5

28324417

KNOB

(PUSH)

[SIL]

A024

27301394

HL-18-0,

CRAMP

Q609,

Q613

2201703

2SC3855-O

OR

A026

27160282

RADIATION

Q614,Q610

2201706

2SC3855-P

OR

A027

27160283

RADIATION

2201704

2SC3855-Y,

TRANSISTOR

A029

27301328

BFG-20,

RADIATION

SHEET

Q611,Q615

2201693

2SA1491-O

OR

A030

28140808

50x50

3T,

CUSHION

Q616,Q612

2201696

2SAI491-POR

A035

800529

BUSHING

(PC)

2201694

2SA1491-Y,

TRANSISTOR

A038

82143006

3P+6FN(BC),

PAN-HEAD

SCREW

Avot

300707

NPT-1116P,

POWER

A039

801433

3SMS8WSW+14B(BC),

SPECIAL

TRANSFORMER

[P]

TAP-TIGHT

SCREW

S10}

25030348

NRSF-102-20BU,

SWITCH

A042

834430088

3TTS+8B(BC),

TAP-TIGHT

SCREW

OPERATION

SECTION

A043

831130088

3TTW+8B,

TAP-TIGHT

SCREW

$281

25030349

NRSF-104-20BU,

SWITCH

A044

830440109

4TTC+10C(BC),

TAP-TIGHT

OPERATION

SECTION

SCREW

P00S

25060044

TERMINAL

(GROUND)

A045

801230

3STS+8BQ(BC),

TAP-TIGHT

A\P901,

P902-——-

25050337

NSCT-2P

164,

AC

SOCKET

SCREW

A

p903

253148

OR

AS-CEE

OR

A047

838440089

4TTB+8C(BC),

TAP-TIGHT

SCREW

253150

AS-CEE,

POWER

SUPPLY

CABLE

A049

831430088

3TTW+8B(BC),

TAP-TIGHT

SCREW

F901

252075

2.5A-SE-EAK,

FUSE

AOS!

837440169

ATTT+16C(BC),

TAP-TIGHT

nN

F902

252077

4A-SE-EAK,

FUSE

SCREW

u00!

1A295509-1A

=

NAAF-4209-1A,

MAINCHRCUIT

PC

A303

28184464

TOP

COVER

BOARD

ASS’Y

A304

27265155A

COSMETIC

RING

(COVER)

u002

1A295510-IA

|

NAETC-4210-IA,

SPEAKER

A305

28140695

25X240

x

1.5T,

CUSHION

TERMINAL

PC

BOARDASS’Y

A306

28140693

10x185

X1.5T,

CUSHION

A307

28141009

125

x

195X1.5T,

CUSHION

ate

Negtleane

as

ee

pane

e

A500

1A295121

FRONT

PANEL

ASS’Y

[BLK]

U005

1A293513-1

NAPS-4213-1,

POWER

SUPPLY

(A511)

27265219

COSMETIC

RING

(L)

[BLK]

CIRCUIT

(1)

PC

BOARD

ASS'Y

(A512)

27265224A

me

RING

ASS’Y

(SEL)

006

1A295514-1D

=

NAETC-4214-1D,

POWER

SUPPLY

CIRCUIT

(2)

PC

BOARD

A

SS’Y

(A516)

28198742

FACET

(A518)

27265223

COSMETIC

RING

(D)

[BLK]

a

ees

OREO

RS

He

pine

eee

ae

(A519)

27265220C

COSMETIC

RING

(R)

[BLK}

ees

ETS

Cee

U008

1A293516-1

NAAF-4216-1,

VOLUM#

&

DIRECT

(A523)

27265221A

COSMETIC

RING

(VOL)

[BLK]

A

ARSUIERC

TOS

(A524)

28135199

NAME

PLATE

(A801)

28324082A

KNOB

ASS’Y

(POW)

[BLK]

-

Moe?

Ugessiet

ee

:

ean

cay

mente

a

ee

PEATEMRE)

U010

1A293519-1

NASW-4219-1,

TONE

C)N‘TROL

ee

epee

sere

CIRCUIT

PC

BOARD

AIs’-Y

ir

TRiGS

Ib

ia

voll

1A293520-1

NADIS-4220-1,

PHOTORE

CEIVING

A500

14296121

FRONT

RANEL

355

¥

[Sit]

U012

1A293521-1

NaSWdee

Pak

Swit

(A511)

27265219-2

COSMETIC

RING

(L)

[SIL]

CIRCUIT

PCHOMRD

LS

(A512)

27265224-3A

aa

RING

AS3

S

SEL)

U013

1A293522-1

|

NADIS-4222-1,

LED

PCBCG®ARD

(A518)

27265223-3

COSMETIC

RING

(D)

[SIL]

wot

ingeee

eae

(A519)

27265220-2A

COSMETIC

RING

(R)

[SIL]

BRA

DISH2

T,

BED

PCICAARD

(A523)

27265221-1

COSMETIC

RING

(VOL)

[SIL]

peas

(A801)

28324414

KNOB

ASS’Y

(POW)

[SIL]

A503

28185359

SIDE

BOARD

(L)

A505

28185360

SIDE

BOARD

(R)

A631

27170271

BOTTOM

BOARD

(L)

-~11-

A-8870

REF.NO.

UOI5

U016

PART

NO.

1A293524-1A

1A295525-1LA

DESCRIPTION

NAETC-4224-

1A,

REMOTE

CONTROL

TERMINAL

PC

BOARD

ASS’Y

NAETC-4225-1A,

TUNER

TERMINAL

PC

BOARD

ASS’Y

NOTE:

[BLK]:

ONLY

BLACK

MODEL

[SIL]:

ONLY

SILVER

MODEL

NOTE:

THE

COMPONENTS

IDENTIFIED

BY

MARK

A\ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

ONLY

WITH

PART

NUMBER

SPECIFIED.

PRINTED

CIRCUIT

BOARD

PARTS

LIST

MAIN

CIRCUIT

PC

BOARD

(NAAF-4209-1A)

CIRCUIT

NO.

Q105,

Q106

Q109

Q110

Q519,

Q520

Q585

Q586

Q851

Q101,

Q102

QL07,

Q108

Q501,

Q502

Q503~Q506

Q507,

Q508

Q5

11,

Q512

Q5

13,

Q514

Q517,

Q518

Q581~Q584

Q589,

Q601

Q602

Q603,

Q604

Q605,

Q606

Q607,

Q608

Q617,

Q618

Q619,

Q620

Q852

Q853

PART

NO.

ICs

222902

222780205MIT

222790205MIT

222570

22240040

226007

222584

Transistors

2211535

OR

2211536

OR

2211537

2211255

2212805

OR

2212806

OR

2212807

2211733

OR

2211732

2213666

OR

2213667

2211455

OR

2211454

2211354

OR

2211353

2211255

OR

2211256

2211634

OR

2211633

2211354

OR

2211353

2202034

OR

2202035

2202024

OR

2202025

2211634

OR

2211633

2211793

OR

2211792

2212600

2211504

DESCRIPTION

NJMS5532D-D

M5F78M20L

M5F79M20L

NJM4560D-X

NJM2902N

TLP-531

TA7317P

2SK146-GR

OR

2SK

146-BL

OR

2SK146-V

2SC1815-GR

2SK389-GR

OR

2SK389-BL

OR

2SK389-V

2SC1845-E

OR

2SC1845-F

2SA1240-F

OR

2SA1240-G

2SA1015-GR

OR

2SA1015-Y

2SA949-Y

OR

2SA949-O

2SC1815-GR

OR

28C1815-BL

28C2229-Y

OR

2SC2229-O

2SA949-Y

OR

2SA949-O

2SD1763A-D

OR

2S8D1763A-E

2SB1186A-D

OR

2SB1186A-E

28C2229-Y

OR

28C2229-O

28A992-E

OR

2SA992-F

DTAI24ES

2SA950-Y

~12-

CIRCUIT

NO.

Q901

Q902

Q903,

Q904

Q905

Q906

D101~D104

D505,

Q506

D511~D516

D517~D520

D851,

D852

D853

D854

D901~D903

L101,

L102

L601,

L602

L201~L203

C103,

C104

C105,

C106

C107,

C108

C109,

C110

Cli,

Cil2

C113~C116

C17,

C118

C119~C122

C123,

C124

C147,

C148

C149,

C150

C151,

C152

C153,

C154

C155,

C156

C157,

C158

C159,

C160

C501,

C502

C509,

C510

PART

NO.

2201512

OR

2201513

2201502

OR

2201503

2211945

2211255

2211455

Diodes

225251

223163

225251

223163

224450623

223163

224450562

Coils

231133

231134

230905

Capacitors

373631024

373631514

372121014

391222217

372122024

379122434

374724334

391651017

373632224

354764719

354741019

354761019

391254717

354761019

373732234

373631014

DESCRIPTION

2SD1200-Q

OR

2SD1200-R

2SB889-Q

OR

2SB889-R

2SK246-GR

2SC1815-GR

2SA1015-GR

TLRI12,

LED

18S133

TLRI12,

LED

1SS133

MTZ6.2C,

Zener

1S8

133

MTZ5.6B,

Zener

NCHI1188

S-0.8E

BLO2RN1-R62

1000

pF,

100V,

Film

(KP

)

150

pF,

100

V,

Film

(KP)

100

pF,

SOV,

Styrene

220

pF,

6.3,

Elect.(MUSE)

2000

pF,

SOV,

Styrene

0.024

uF,

SOV,

Film

(DIW)

0.043

iF,

SOV,

Film

(TA

100

uF,

25V,

Elect.(FS)

2200

pF,

100V,

Film

(KP

)

470

uF,

35V,

Elect.

100

UF,

16V,

Elect.

100

uF,

35V,

Elect.

470

uF,

25V,

Elect.(MUS

)

100

uF,

35V,

Elect.

0.022

WF,

100,

Film

(if

3KT)

100pF,

100V,

Film

(K})

CIRCUIT

NO.

C511,

C512

C513~C516

C517,

C518

C519,

C520

C521,

C522

C523,

C524

C525~C526

C527,

C528

C529,

C530

C581

C582

C583

C605,

C606

C607,

C608

C609,

C610

C611,

C612

C613,

C614

C6

15~C622

C851

C852

C853

C855

C858,

C859

C901~C903

C905,

C906

C909,

C910

C911,

C912

C913,

C914

C915,

C916

C917

C918

RIS1,

R152

R527,

R528

R535,

R536

R601,

R602

R603,

R604

R607~R614

R615~R618

R623~R626

R633,

R634

R862

R875,

R876

R9O1~R903

R905,

R906

$101

RL851,

RL852

P104

P256

P321

P852

P10]

P103

P752

P753

JL211,JL213

JL212,JL951

PART

NO.

DESCRIPTION

372123304

33

pF,

SOV,

Styrene

391252207

22

UF,

25V,

Elect.

(MUSE)

372123304

33

pF,

50V,

Styrene

354722219

220

LF,

6.3V,

Elect.

374791044

0.1

“F,

63V,

Film

(TF)

391242217

220

UF,

16V,

Elect.(MUSE)

373732234

0.022

uF,

100V,

Film

(MKT)

373734734

0.047

pF,

100V,

Film

(MKT)

354790479

4.7

uF,

100V,

Elect.

391221027

1000/F,

6.3V,

Elect.

(MUSE)

354721019

100

uF,

6.3V,

Elect.

354764709

47

uF,

35V,

Elect.

391241017

100

uF,

16V,

Elect.(MUSE)

37379

1044

0.1

IF,

63V,

Film

(MKT)

374794734

0.047

uF,

63V,

Film

(TF)

374722235

0.022

iF,

50V,

Film

(TF)

379121035

0.01

uF,

50V,

Film

(DEW)

373791044

0.1

UF,

63V,

Film

(MKT)

354722219

220

MF,

6.3V,

Elect.

354742209

22

uF,

16V,

Elect.

354784799

0.47

UF,

SOV,

Elect.

354743319

330

MF,

16V,

Elect.

374721044

0.1

fF,

50V,

Film

(TF)

354774719

470

UF,

63V,

Elect.

354761009

10

YF,

35V,

Elect.

354724719

470

UF,

6.3V,

Elect.

354751029

1000uF,

25V,

Elect.

354754719

470

pF,

25V,

Elect.

391221027

1000uF,

6.3V,

Elect.(MUSE)

374724734

0.047

uF,

SOV,

Film

(TF)

Resistors

442523304

33

Q,

1/2W,

Metal

oxide

film

441622734

27

kQ,

1W,

Metal

oxide

film

5210062

NO6HR4.7KBD,

Semi-fixed

442522224

2.2

kQ,

1/2W,

Metal

oxide

film

442522214

220

Q,

1/2W,

Metal

oxide

film

442520224

2.2

Q,

1/2W,

Metal

oxide

film

4000078

0.33

Q,

5W,

Metal

plate

442820824

8.2

Q,

3W,

Metal

oxide

film

442525114

510

Q,

1/2W,

Metal

oxide

film

441623914

390

Q,

1

W,

Metal

oxide

film

441620684

6.8

Q,

1W,

Metal

oxide

film

442524314

430

Q,

1/2W,

Metal

oxide

film

Switch

25065439

NSS-62159,

Slide

switch

Relaies

25065316

NRL-2P7A-DC

12-043

Plug

25055100

NPLG-3P84

25055133

NPLG-3P117

25055137

NPLG-7P121

25055139

NPLG-9P123

Terminal

25045341

NPJ-2PDBL-192

Socket

ass’y

2009990200

NSAS-06P0282

2009990003

NSAS-06P0007

2009990004

NSAS-06P0008

Jumper

sockets

25050268

NSCT-4P96

25050267

NSCT-3P95

Bracket

27141059

(Ground)

27301427

(Bus)

~13-

CIRCUIT

NO.

.

Be

PART

NO.

DESCRIPTION

Cushion

28140963

Holder

clamp

27301186

MSA-

1606

27301271

MSA-1609

SPEAKER

TERMINAL

PC

BOARD

(NAETC-4210-1A)

CIRCUIT

NO.

P751,

P752

PART

NO.

DESCRIPTION

Terminals

25060162

NTM-4PDMNO88

INPUT

CIRCUIT

PC

BOARD

(NASW-4212-1A)

CIRCUIT

NO.

D201

C201

$201

$281

RL201

P201~P204

P207

P205,

P206

P103A

P211

P256

JL201

PART

NO.

DESCRIPTION

Diode

223163

1S8133

Capacitor

374721034

0.01

uF,

SOV,

Film

(TF)

Switches

25030330

NRS-2211-BA,

Rotary

25065438

NSS-84158,

Slide

Relay

25065397

NRL-2P1A-DC5-068

Input

terminals

25045305

NPJ-4PDBL164

25045304

NPJ-2PDBL163

Plugs

25055133

NPLG-3P117

25055139

NPLG-9P123

Socket

ass’y

2009990090

NSAS-6P0128

Jumper

socket

25050267

NSCT-3P95

POWER

SUPPLY

CIRCUIT

(1)

PC

BOARD

(NAPS-4213-1)

CIRCUIT

NO.

D921

D922,

D923

D934

D932

D941

L921,

L922

C921,

C922

C923~C925

C931,

C932

C933

C934

C941,

C942

C943,

C944

C945

PART

NO.

DESCRIPTION

Diodes

22380040

RBV-602L

22380012

HER303F

22380039

1D4B42

22380032

1SR139-100

22380039

1D4B42

Coils

230906

BLO2RN2-R62

Capacitors

3504246

18000

pF,

63V,

Elect.

374503345

0.33

yF,

125V,

Film

(ME)

374722235

0.022

iF,

SOV,

Film

(TF)

354741029

1000

uF,

16V,

Elect.

354744719

470

pF,

16V,

Elect.

354761029

1000uF,

35V,

Elect.

374722235

0.022

UF,

SOV,

Film

(TF)

374501045

0.1

yF,

125V,

Film

(ME)

A-8870

CIRCUITNO.

PART

NO.

DESCRIPTION

Resistors

R931

442520104

1

Q,

1/2W,

Metal

oxide

film

R932

441623314

330

Q,

IW,

Metal oxide

film

R941,

R942

442522294

0.22

Q,

1/2W,

Mctal

oxide

film

Jumper

socket

JL941

25050267

NSCT-3P95

Socket

ass’y

P104

2009990069

NSAS-6P0106

Plug

P95

1a

25055133

NPLG-3P117

Bracket

27301367

(Bus)

Radiator

D921a

27160265

RAD-82

POWER

SUPPLY

CIRCUIT

(2)

PC

BOARD

(NAETC-4214-1D)

CIRCUITNO.

PART

NO.

DESCRIPTION

Transistor

Q951

2213650

DTD113ZS

Diodes

D951

223163

1$$133

D952

22380039

1D4B42

Transformer

A\1902

2300711

©

NPT-1117P

Capacitors

C951~C955

374721034

0.01

“iF,

50V,

Film

(TF)

C956

354752229

2200

UF,

25V,

Elect.

&

C971

35000654

0.01uF,

AC400V/125V,

Film

(IS)

C972

3500065A

0.01uF,

AC400V/125V,

Film

(1S)

Condensor

cover

A

C972a,

C973a

=:

27301216

SB1925A

Resistors

R951

442520104

1

Q,

1/2W,

Metal

oxide

film

R952

441628214

820

Q,

1W,

Metal

oxide

film

Relay

A

RL901

25065248

NRL-1IPI5A-DC12-29

Terminals

25060092

NTM-1S33

Socket

ass’y

P951

2009990180

NSAS-6P0250

Fuse

holder

Z\

F901a,

F902a

25050065

YSH403T

*

NOTE:

5.6V

—~14-

CIRCUIT

NO.

PARTNO.

DESCRIPTION

Fuse

label

A

F902b

29360374

T4A/250V

MICROPROCESSOR

CIRCUIT

PC

BOARD

(NADG-4215-1A)

CIRCUITNO

=

PARTNO.

DESCRIPTION

ICs

Q801

22240377

TMP47C440AN-1997

Q802

22240358

LB1638

Q803

22240239

TA7291S

Q804

222951

M51943BSL

Q805

222780055

78MOSHE

SK

(Q805

222780565

78M56)

Transistors

Q806

2213160

DTC124ES

Q807~Q809

2213510

DTA114ES

Q810

2211255

28C1815-GR

Q8t1

2213090

DTAILL4YS

Q812

2213650

DTD113ZS

Q813

2211164

28C2120-Y

Q814

2213090

DTAII4YS

Q815

2211504

2SA950-Y

Diodes

D801,

D816

223163

18S$133

D803~D807

D802

224450562

MTZ5.6B,

Zener

D808~D815

225142DX2

SEL2913K-DX2,

LED

D817

224450562

MTZS5.6B,

Zener

Coils

L801

233409K

220

NCH-1284

L802~L807

230906

BLO2RN2-R62

Osc,

element

X801

3010150

CST4.00M3W

Capacitors

C803,

C807

354744709

47

uF,

16V,

Elect.

C808

375524744

0.47

UF,

SOV,

Film

(MMIT)

C810

3000051

0.047

F,

5.5V,

Super

C816

374721044

0.1

LF,

SOV,

Film

(TF

C819

354724719

470

UF,

6.3V,

Elect.

C821

354744709

47

uF,

16V,

Elect.

C822

354761009

10

UF,

35V,

Elect.

C824

354744709

47

UF,

16V,

Elect.

C827

353741009

0

UF,

16V,

Elect.

C829,

C830

374721035

0.01

uF,

SOV,

Film

(TR

Resistors

R817,

R8I8

49163103405

RMI/1OW

10K

X5,

Reis

tor

network

R830

441620564

5.6

Q,

IW,

Metal

oxié

film

Socket

ass’y

P211

2009990110

NSAS-18P0167

P80]

2000871

NSAS-6P827

CIRCUIT

NO

Q805a

$853

PART

NO.

DESCRIPTION

Radiator

27160145

RAD-51

Switch

25030334

NRS-112-25RSM

Holder

27190786

(LED-8)

VOLUME

&

DIRECT

SWITCH

CIRCUIT

PC

BOARD

(NAAF-4216-1)

CIRCUIT

NO.

R321

$351

P205

P206

P32]

JLA01A

PART

NO.

DESCRIPTION

Resistor

§104294

N27DGLS0KT30,

Variable

Switch

25030336A

NRS-184-25SS,

Rotary

Socket

ass’y

2000809

NSAS-6P765

2000630

NSAS-6P586

2009990179

NSAS-14P0249

Jumper

socket

25050267

NSCT-3P95

MUTING/SUBSONIC

SWITCH

PC

BOARD

(NAAF-4218-1)

CIRCUIT

NO.

C301~C304

C305,

C306

C307,

C308

R301

R302

R303

PART

NO.

DESCRIPTION

Capacitors

374721635

0.016

“uF,

SOV,

Film

(TF)

374721825

1800

pF,

50V,

Film

(TF)

374728234

0.082

pF,

SOV,

Film

(TF)

Resistors

5148107A

NI6RGMC250KMN25,

Variable

5142002

NI6RGM11C100K25,

Variable

5144011

N!I6RGM11C70K88K25,

Variable

TONE

CONTROL

CIRCUIT

PC

BOARD

(NASW-4219-1)

CIRCUIT

NO.

C331,

C332

$33]

($332)

$333

PART

NO.

DESCRIPTION

Capacitors

374724744

0.47

UF,

50V,

Film

(TF)

Switches

25035601

NPS-222-L565

25035584

NPS-122-L546

PHOTO

RECEIVING

CIRCUIT

PC

BOARD

(NADIS-4220-1)

CIRCUIT

NO.

U0l5

D83!~D833

D834~D836

C831

$852

PART

NO.

DESCRIPTION

Photo

receiving

unit

24130003

GP1USOXS

Diodes

223163

18S133

225142DX2

SEL2913K-DX2,

LED

Capacitor

354744709

47

uF,

16V,

Elect.

Switch

25035548

NRS-111-S510

Holder

27190787

(LED-1)

A-8870

SPEAKER

SWITCH

CIRCUIT

PC

BOARD

(NASW-4221-1)

CIRCUITNO.

PART

NO.

DESCRIPTION

Diode

D855

223163

1$S133

Switch

$851

25030335

NRSF-124-20BU,

Rotary

Stereo

jack

P851

25045337

HLJ4317-01-3120

Relay

RL853

25065

174

NRL-2P1

A-DC

12-09

Socket

ass’y

P852

2009990185

NSAS-18P0255

Shield

plate

27150208

LED

PC

BOARD

(NADIS-4222-1)

CIRCUITNO

PART

NO.

DESCRIPTION

Diodes

D203,

D204

225142DX2

SEL2913K-DX2,

LED

Jumper

socket

JL210

25050267

NSCT-3P95

Holder

27190787

(LED-1)

LED

PC

BOARD

(NADIS-4223-1)

CIRCUITNO.

PARTNO.

DESCRIPTION

Diode

D821

225142DX2

SEL2913K-DX2

Holder

27190787

(LED-1)

REMOTE

CONTROL

TERMINAL

PC

BOARD

(NAETC-4224-1A)

CIRCUITNO.

PART

NO.

DESCRIPTION

Mini

jack

P25!

25045172

HSJ1003-01-020

Plug

P80la

25055133

NPLG-3P117

TUNER

TERMINAL

PC

BOARD

(NAETC-4225-1A)

CIRCUITNO.

PART

NO.

DESCRIPTION

Terminal

P221

25045307

NPJ-2PDBL166

NOTE:

;

THE

COMPONENTS

IDENTIFIED

BY

MARK

AY

ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

ONLY

WITH

PARTS

NUMBER

SPECIFIED.

:

~15-

PRINTED

CIRCUIT

BOARD

VIEW

FROM

BOTTOM

SIDE

NAETC-4210

NAETC-4211

25134211

NCETC-4211

INP

SEL

REC SEL

$201

281

A-887(C

NAAF-4209

ONKY-00296

/

Druck:3

NAPS-4213

25134213

NCPS-4213

OURAO

NADG-4215

NAETC-4214

OUTL

Hoy

}

12°

VOIR

ATTENTION

SUR

LA

GAUCHE

€—

WITH

SAME

TYPE

FUSE”

AGAINST

FIR

25134222

NCDIS-4222

ONKY-00296

/

Druck:4

2494

~20-—

ONKY-00296

/

Druck:5

SCHEMATIC

DIAGRAM

MODEL

A-8870

NADG—4215-1A

TWh

KXX2

Srb11szs

TNAAF—4209-1A

(2/2)

_

aa

TL,

L101

Ryan

35.6%

=a

NcH-1168

144

Peet

Tye

7)

202J

abe

ore

$233

P13

ast

ot

[

=D

be

reas

F

+

Co

lel

=

I]

ra

a

irre

ee

109

44

C157

RB31

DBs4

330

STAND-BY

ses2_

Spot

=

i

Haat

ask

ot

2.

5mV

OM)

:

(191

160mV

Oc)

1)

Di

¢

lings

Lise

pT

eet

7

ae

eetee

jusal

Spapape

cez8

223Z

28.65

Uf

—.sn2_

SI

e810

eet

|

anes

aR

Faot

DTA114YS

—_-

-_—_-—_—_-

-

——.

rsh

NASW-4212-1A

fo]

Po

me

NASW-4279-1].

ss

tS™S*S*C«

'

SON

ATTENUATOR

SUBSONIC

P207.

[999

999999]

g

OCT

'

1

|

ax

|O—+—-@

zs

|

'

-2

1G

@

.

Le)

ce

at

a

bl

TEEITIEE

Seer

OM

ee

ot

*

—

ad

|

rite

~~

oa

Lf,

{|

1

maosazit

+8

1P4J763V.

w:

[~-

@601

6

i+

§

|i

e52

ROSS

L|

19>

|

1o9¢|

Lb

fl

ime

oa

Z2/16

330K

Fock

Cae

a

:

xe

HT

coor3s

RaBR

Res)

Ge51

eee

|

3

|

22K

1A7317°1

_|

14

aan:

C93:

Sota

14542

ry

TT

ai

pT

aa

ge

ou

aise

—

aa

a

ee

1

pet

931

MIZ6.20

223K

4183

E

beat

R931

172

Ph

>

m

?!

s|

N

s|

ul

a

4

rf

>

1

2

a

lol

lo}

a

3

@

THE

COMPONENTS

IDENTIFIED

BY

mark

AN

ARE

CRITICAL

FOR

SAFETY.

REPLACE

ONLY

WITH

PART

NUMBER

SPECIFIED.

@

VOLTAGE

(MEASURED

WITH

VOLTMETER)

CJ

1S

DC

VOLTAGE.

(NO

aes

SIGNAL)

@

ALL

PNP

TRANSISTORS

ARE

EQUIVALENT

TO

2SA1015-GQR

UNLES:

OTHERWISE

NOTED.

@

ALL NPN

TRANSISTORS

ARE

EQUIVALENT

TO

2SC1815-GR

UNLESS

OTHERWISE

NOTED.

@

ALL

DIODES

ARE

EQUIVALENT

TO

1SS133

UNLESS

OTHERWISE

NOTED.

@

ELECTROLYTIC

CAPACITORS

(4#)ARE

IN

aF/W.

@

ALL

CAPACITORS

ARE

IN

pF/SOW

UNLESS

OTHERWISE

NOTED.

EX)3pF+030,

33pF+330,

330pF+331.

0,

0334F+333

NAPS~421

3~"

Le

@601,

a6i

0511-516

Sca2zee¥,

0

'

188133

‘aeos,

606.

603,

2610

ger

im

614

|

D512

)

2501

765A-D,

E

SSCS055-O,

i

©)

r@)

©

0619,

0620

2SA392-£,

F

'

@

ALL

RESISTORS

ARE

IN

OHMS

1/4

WATTS

UNLESS

OTHERWISE

NOTED.

wm

Sere

on

o

2613,

9672

_G615

2616

@

THE

THICK

LINES

IN

PC

BOARD

ARE

THE

PRINTING

SIDE

OF

THE

PARTS.

€)

seer,

EX)

Gaetetele

PRINTING

SIDE

25511

86AcD,

&

©

0617,

0618

@

CIRCUIT

IS

SUBJECT

TO

CHANGE

FOR

IMPROVEMENT.

Q603,

9604

2802229-Y,

O

noe

Ape

ae

eR

a

Gt

a

A:

ee

A-8870

ONKYO

CORPORATION

PARTS

LIST

OF

PACKING

NAAF4218

REF.

NO.

A851

A852

A853

A854

A855

A857

A858

A901

A903

A904

A905

A906

PART

NO.

DESCRIPTION

29052259

MASTER

CARTON

BOX

[BLK]

29052261

MASTER

CARTON

BOX

[SIL]

29091425A

PAD,

LEFT

29091426A

PAD,

RIGHT

261504

PAPER

TAPE

29100035A

1020x720,

POLY-VINYL

BAG

282320

SEALING

HOOK

29110071

DAMPLON

TAPE

(W=50)

29355133A

DBP

CAUTION

LABEL

ACCESSARY

BAG

29341650

INSTRUCTION

MANUAL

29365020C

WARRANTYCARD

24140207

RC-2078,

REMOTE

CONTROL

TRANSMITTER

3010054

UM-3,

BATTERY

2010200

3.5

mm,

MINI

PLUG

ASS’Y

29100097

350

x

250,

POLY-VINYL

BAG

NOTE

[BLK]:

ONLY

BLACK

MODEL

NASW-4219

{SIL}:

ONLY

SILVER

MODEL

25134218

NCSW-4213

OURAZO

NADIS-4220

NASW-4221

25134220

STAND-BY

cp

15-4220

yy

25134221

93

=

ONKY-00296

/

Druck:6

4

FRONT

PANEL

FACILITIES

1,

Power

switch

(POWER)

2.

Remote

control

sensor

3.

Servo

operation

indicator

(SERVO

OPERATION)

4.

Input

selector

switch

(INPUT

SELECTOR)

TAPE-2,

TAPE-1,

DAT,

PHONO,

CD,

AUX-1,

AUX-2

5.

Volume

control

(VOLUME)

6.

Source

direct

switch

(SOURCE

DIRECT)

DIRECT,

TONE,

MONITOR

TAPE-

!/TAPE-2

7.

Speaker

selector

switch

(SPEAKERS)

OFF,

A,

B,

A+B

8.

Headphone

jack

(PHONES)

9.

Bass

control

(BASS)

SYSTEM

CONNECTIONS

TAPE

DECK

DAT

or

TAPE

DECK

section

PLAY

REC

TAPE

DECK

or

GRAPHIC

EQUALIZER

GND

OUTPUT

Ground

connection

is

not

necessary

for

turntables

without

ground

leads.

COMPACT

DISC

PLAYER

TURNTABLE

“Connection

for

Remote

Control”

ADDITIONAL

AUDIO

»

COMPONENT

10.

Treble

control

(TREBLE)

11.

Balance

control

(BALANCE)

12.

Muting

indicator

13.

Attenuator

switch

(ATTENUATOR)

14.

Subsonic

filter

switch

(SUBSONIC)

15.

Mode

selector

switch

(MODE)

STEREO,

MONO

16.

Recording

source

selector

switch

(REC

SELECTOR)

TAPE-!—DAT

&

TAPE-2,

DATTAPE-1

&

2

OFF

SOURCE

17.

Cartridge

selector

switch

(CARTRIDGE)

MC,

MM

SPEAKER

(A)

RIGHT

SPEAKER

(A)

LEFT

+

AG

OUTLETS

SeMTOEO

TOTAL

OW

MA,

Power

supply

SPEAKER

IMPEDANCE

A

or

B:

4

ohms

MIN./SPEAKER

A

+

8:8

ohms

MIN./SPEAKER

SPEAKER

(B)

LEFT

SPEAKER

(B)

RIGHT

—~

25

A-8870

ONKYO

CORPORATION

International

Division:

Onarimon

Yusen

Bidg.,

23-5,

Nishi-Shimbashi

3-chome,

Minato-ku

TOKYO

105,

JAPAN

Tel:

03-3432-6987

Fax:

03-3436-6979

ONKYO

DEUTSCHLAND

GMBH

ELECTRONICS

Industriestrasse

20,

8034

Germering,

GERMANY

Tel:

089

849320

Fax:

0898493

226

Printed

by:

Schaltungsdienst

Lange,

Berlin

(GERMANY)

0M3404

A106

—26—

Onkyo A-8870 User manual

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