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A-809

Ref.

No.

3404

ONKYO.:

SERVICE

MANUAL

Integrated

Stereo

Amplifier

MODEL

A-809

Black

and

silver

models

120V

AC,

60Hz

230V

AC,

50Hz

240V

AC,

50Hz

120V/220V

AC,

50Hz/60Hz

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

MARK

A

ON

THE

SCHEMATIC

DIAGRAM

AND

IN

THE

PARTS

LIST

ARECRITI-

CAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

THESE

COMPONENTS

WITH

ONKYO

PARTS

WHOSE

PARTS

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL.

MAKE

LEAKAGE-CURRENT

OR

RESISTANCE

MEASURE-

MENTS

TO

DETERMINE

THAT

EXPOSED

PARTS

ARE

AC-

CEPTABLY

INSULATED

FROM

THE

SUPPLY

CIRCUIT

BEFORE

RETURNING

THE

APPLIANCE

TO

THE

CUS-

TOMER.

ONKYO

AUDIO

COMPONENTS

A-809

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

m/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,

64B/Oct)

Signal

to

Noise

Phono

(MM):

94

dB

(5.0

mV

input)

Ratio

(IHF-A):

Phono

(MC):

75

dB

(0.5

mV

input)

CD

(DIRECT):

107

dB

Attenuator:

=20

dB

Muting:

-0o

Power

Supply:

European

models:

AC230V,

50

Hz

U.S.A

&

Canadian

models:

AC120V,

60 Hz

U.K

&

Australia

models:

AC240V,

50

Hz

Worldwide

models:

AC120

and

220V

switchable,

60/60

Hz

Dimensions

(W

x

H

x

D):455

x

170

x

420mm

17-15/16"

x

6-11/16"

x

16-9/16"

Weight:

16.7

kg,

36.8

Ibs.

PRECAUTIONS

L

3.

Replacing

the

fuses

For

continued

protection

against

risk

fire,

replace

only

with

same

type

and

same

rating

fuse.

CIRCUIT

NO.

PART

NO.

DESCRIPTION

P9OL

252052

7A

ST-6,

Primary

fuse

(120V,

120V/220V

model)

FOO!

52075

2.5A-SE-EAK,

Primary

fuse

(230V

model)

F902

252077

4A-SE-EAK,

Primary

fuse

(230V,

240V,

120V/220V

model

}

Insulation

resistance

mesurement

(Only

U.S.A.

model)

Connect

the

insulating-re:

More

than

10

MQ

at

SOOV.

ance

tester

between

the

plug

of

power

supply

cable

and

the

terminal

GND

on

the

back

panel.

Specifications;

Voltage

selector

(rear

panel)

Worldwide

models

are

equipped

with

a

voltage

selector

to

conform

with

local

power

supplies.

Be

sure

to

set

this

switch

to

match

the

voltage

of

the

power

supply

in

your

area

before

turing

the

power

switch

on.

Voltage

is

changed

by

sliding

the

groove

in

the

switch

with

a

screwdriver

to

the

up

or

down.

Confirm

that

the

switch

has

been

moved

all

the

way

to

the

up

or

down

before

turning

the

power

switch

on.

Models

without

a

voltage

selector

can

only

be

used

in

areas

where

the

power

supply

is

the

same

as

that

of

the

unit.

220V

~

220V

~

»

at

AC

220V

at

AC

120V

Vv

120V

~

120V

~

A-809

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

15mV+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

of

times

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

Anplifier

SP

Load

Differe-

Attenua~

|

CD

IN

OUT

resistance

ntiator

tor

|

Square

wave

The

unit’s

volume

SOHz,

10V

p-p

contro!

may

also

be

used.

Oscillo-

scope

3.3

KQ

Ol

uF

3.3

KQ

OUTPUT

°

o—w—

Square

wave

input

from

low-frequency

oscillator

10

KQ

ue

50

Hz,

10V

p-p

Tp

40

A-80!

IC

BLOCK

DIAGRAM

TMP47C440AN

(Microprocessor)

Te

av

1s6v

iss

*

sruerceaan

Be

a

vane

2

:

NAS

ROWERL

>

rs

>

Power

KEY

‘STANDBY

{orower

NEMS

§

t

newut

mp

>

een

ve

eat

5

leer

38

Se

:

6

nunl

at

ororeccime

<2

ox

tow

3

Out

vo.

vepows

{

8

35

3

jee

lat

34

POWER

semen

{<9

:

|

is

<

ra

ena

RESET}

a

RESET

12

cea

EEE)

13

=

30

14

weil

18

MODE.

ENCDS|

a

ENCODER

18

sce}

22

ave

Exc!

cs

25

=

varex,

2

__

a

=

WET

2s

=

sv

~

21

ol

22

—

¥

vss

HOR

Pin

No.

Symbol

Description

1

VAREF

Analog

reference

voltage

for

A/D

conversion

2

VASS

Analog

reference

GND

for

A/D

conversion

3

KEY

Input

Selector,

Power

key

input

terminal.

:

To

read

Input

Selector

and

Power

key

by

means

of

A/D

conversion

4

INPUT

Muting

output

terminal

for

Main

amplifier

input.

Active

“H”

Mating

output

terminal

for

Rec.

output.

Active

“H™

5

RECMUT

To

be

output

when

switching

Input

Selector.

To

be

output

continuously

in

case

of

Input

Selector

TAPE-1,

TAPE-2,

DAT,

and

DIGITAL-4.

Control

output

terminal

for

PLAYER.

6

PLAYER

“L”

will

be

output

for

200ms

if

input

K64

code

for

remote

control

and

set

Input

Selector

for

PHONO.

7

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”

8

VOL

UP

CH").

When

not

moving,

both

outputs

shail

be

“H”

(Brake).

9

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”).

10

SEL

UP

When

not

moving,

both

outputs

shall

be

“H”

(Brake).

Wl

Sl

Output

terminal

for

switching

digital

signal.

12

S2

Switch

as

follows

through

the

position

of

Input

Selector.

13

83

Input

3

2

éeletor

Output

S.

Output

S:

Output

SI

DIGITAL-1

ti

L

L

DIGITAL-2

L L

H

DIGITAL-3

L

H

L

DIGITAL-4

L

H H

Others

(Analog)

H

Ht

e

14

EXP/JPN

Input

terminal

for

remote

control

initialization

when

energizing.

Pin

No.

Symbol

Description

15

DIG-4/MODE

Output

terminal

for

Input

Selector

display.

Output

of

the

position

currently

selected

will

be

“L”

Is

PIGS

(lighted).

17

DIG-2/AUX-2

DIG-4/MODE

output

will

be

input

terminal

MODE

for

initializtion

of

operation

switch

when

18

DIG-1/AUX-1

energizing.

19

cD

Outtput

DIG-1/AUX-1,

DIG-2/AUX-2

will

be

switched

by

initializing

MODE

into;

20

TUNER

MODE

DIG-1/AUX-1

|

DIG-2/AUX-2

L(0)

AUX-1

AUX-2

H(1)

DIG-1

DIG-2

VSS.

GND

terminal

PHONO

DAT

Output

terminal

for

Input

Selector

display.

TAPE-1

‘The

output

of

the

positon

currently

selected

will

be

“L

(lighted).

25

TAPE-2

26

ENCD1

27

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

we

§ .

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

tured

into

“!

mode.

35

ENCDS

Input

terminal

for

detecting

Rotary

sw

position

of

Input

Selector.

:

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:

ae

To

be

connected

with

output

of

photoreceivin

unit.

38

SYS

IN

Input

terminal

for

System

code.

Active

“H”.

5

NG

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

tumed

into

“L”

when

Power

is

OFF.

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

CONTROL,

our

|

our

IN

1]

IN

2

|0UT1/O0UT2)

£-F

H

L

H

L

|NORMAL

L H

L

H

|REVERSE

H H L L

BRAKE

L L

|

OFF

|

OFF

|

WAIT

BLOCK

DIAGRAM

REC

SELECTOR

SOURCE

DIRECT

POWER

AMP.

pee

VOLUME

R321

TAPE-2

PLAY

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ATTENUATOR

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301

RO

PROCESSOR

A-809

CHASSIS-EXPLODED

VIEW

A006

ugis

CHASSIS

EXPLODED

VIEW

PARTS

LIST

REF.

NO.

A001

AQU2

A003

A006

A006

A006

A006

A009

A010

AOIL

AOI2

AOI3

AOI4

AOLS

A016

AOI7

A020

A022

A023

A024

A026,

A027

A029

A030,

A035

A038,

A039

A042

A043

A044

A045

A047

A049

AOSI

A303

A304

A305

A306

A307

A500

(ASIN)

(A512)

(A516)

(A518)

(A519)

(A520)

(A518)

(AS19)

(A523)

(A801)

AS03

ASOS

A631

PART

NO.

27110588-1C

27270212

272703264

27121477B

271214784,

271214804,

27121525

28140859

28140695

271306224

27130623

27130624

27130656A

28170025

27190846

27130627

27300833

27300750

27270213

27301394,

27160282

27160283

27301328

28140808

800529

82143006

801433

834430088

831130088

830440109

801230

838440089

831430088

837440169

28184464

272651554

28140695,

28140693

28141009

1A293121

27265219

272652244

28198742

27265220C

28198742

27265221A

28135199

283240824

28191568

28198753

28198742

28199190

1294121

27265219-2

27265224-3A

27265223-3

27265220-2A

272

28324414

28185359

28185360

27170271

DESCRIPTION

FRONT

BRACKET

SPACER

SPACER

(VOL)

BACK

PANEL

[D]

BACK

PANEL

|P]

BACK

PANEL

[W]

BACK

PANEL

[Q)

6020

x

1ST,

CUSHION

25

240

X1.ST,

CUSHION

BRACKET

(SHIELD)

BRACKET

(L)

BRACKET

(R)

BRACKET

(C)

BUSHING

HOLDER

(CAPACITOR)

BRACKET

(EQ)

WS-2NS,

CRAMP.

#2271,

BUSHING

(AC

CORD)

SPACER

(PT)

HL-18-0,

CRAMP.

RADIATION

RADIATION

BFG-20,

RADIATION

SHEET

50-50-3T,

CUSHION

BUSHING

(PC)

3P+6FN(BC),

PAN-HEAD

SCREW

3SMS8WSW-+14B(BC),

SPECIAL

TAP-TIGHT

SCREW

3TTS+8B(BC),

TAP-TIGHT

SCREW

3TTW+8B, TAP-TIGHT

SCREW.

ATTC+10C(BC),

TAP-TIGHT

SCREW

38TS+8BQ(BC).

TAP-TIGHT,

SCREW

ATTB+8C(BC),

TAP-TIGHT

SCREW

3TTW+8B(BC),

TAP-TIGHT

SCREW

ATTT+16C(BC),

TAP-TIGHT

SCREW

TOP

COVER

COSMETIC

RING

(COVER)

25240

x1,5T,

CUSHION

10180

I.ST,

CUSHION

125

x

195

x1.5T,

CUSHION

FRONT

PANEL

ASS"Y

[BLK]

COSMETIC

RING

(L)

[BLK]

COSMETIC

RING

ASS’Y

(SEL)

[BLK]

FACET

COSMETIC

RING

(D)

[BLK]

COSMETIC

RING

(R)

[BLK]

FACET

COSMETIC

RING

(VOL)

[BLK]

NAME

PLATE.

KNOB

ASS"Y

(POW)

[BLK]

CLEAR

PLATE

(RE)

FACET

FACET

FILM

FRONT

PANEL

ASS'Y

[SIL]

COSMETIC

RING

(L)

[SIL]

COSMETIC

RING

ASS’Y

(SEL)

[SIL]

COSMETIC

RING

(D)

[SIL]

COSMETIC

RING

(R)

[SIL]

COSMETIC

RING

(VOL)

{SIL]

KNOB

ASS"Y

(POW)

[SIL]

SIDE

BOARD

(L)

SIDE

BOARD

(R)

BOTTOM

BOARD

(L)

REF.

A632

A633

A634

A636

A8I0

A810

A&I

ABIL

ABI2

A812

A813

A813

-

A814

A8I4

ABIS

A8IS

609.

Q614,

Q610

Q611

Q616,

Q612

ATo01

Arvo

Aro0i

Aro

S101

S281

Ass

POOS:

A

pw

A903

Apo

F901

POOT

F902

oO!

002

003

woos

U00S

006

U006

U006

NO.

.

Q613

,

Q615

|.

P9O2

|.

P9O2

PART

NO.

271702724,

28141024

27270212

27175251

28324083,

283244134.

283240844,

28324084-2

28324085B~

28324085-2

28324086

28324416

28324411

28324412

283240884

28324417

2201703

2201706

2201704

2201693

2201696

2201694

2300706

2300707

2300708,

2300709

25030348

25030349

25065287

25060044

25050337

253168

253148

OR

253150

253092-1A

253170

252052

252075

252077

1A293509-1

1A293510-1

1A293511-1

1A293512-1

1A293513-1

1A293514-1

1A293514-1A

1A293514-1B

DESCRIPTION

BOTTOM

BOARD

(R)

20x

240x2.5T,

CUSHION

SPACER

LEG

ASS'Y

KNOB

(VOL)

[BLK]

KNOB

(VOL)

[SIL]

KNOB

(SEL)

[BLK]

KNOB

(SEL)

[SIL]

KNOB

(D)

[BLK]

KNOB

(D)

{SIL}

*

KNOB

(SP)

[BLK]

KNOB

(SP)

[SIL]

KNOB

(TONE)

[BLK

KNOB

(TONE)

[SIL]

KNOB

(PUSH)

[BLK]

KNOB

(PUSH)

[SIL]

2SC3855-O

OR

28C3855-P

OR

2SC3855-Y,

TRANSISTOR

28A1491-0

OR

2SA1491-P

OR

2SA1491-Y,

TRANSISTOR

NPT-1116D,

POWER

TRANSFORMER

[D|

NPT-1116P,

POWER

TRANSFORMER

|P|

NPT-1116DG,

POWER

TRANSFORMER

|W]

NPT-1116Q,

POWER

TRANSFORMER

[Q|

NRSF-102-20BU,

SWITCH

OPERATION

SECTION

NRSF-104-20BU,

SWITCH

OPERATION

SECTION

NSS-22113P,

SLIDE

SWITCH

[W]

TERMINAL

(GROUND)

NSCT-2P

164,

AC

SOCKET

(P]

NSCT-2P173,

AC

SOCKET

[Q|

AS-UC-6

#18

OR

AS-UC-6

#18

OR

AS-UC-6

#18

OR

AS-UC-6

#18,

POWER

SUPPLY

CABLE

[D]

AS-CEE

OR

AS-CEE,

POWER

SUPPLY

CABLE

{PI

AS-CEE-2,

POWER

SUPPLY

CABLE

|W]

AS-SAA,

POWER

SUPPLY

CABLE

Al

TAST-6,

FUSE

[D,

W]

2.5A-SE-EAK.

FUSE

[P]

4A-SE-EAK,

FUSE

[P,

W.

Q]

NAAF-4209-1

MAIN

CIRCUIT

PC

BOARD

ASS’Y

NAETC-4210-1

SPEAKER

TERMINAL

PC

BOARD

ASS*Y

NAETC-4211-1

AC

SOCKET

PC

BOARD

ASS’Y

[D]

NASW-4212-1

INPUT

CIRCUIT

PC

BOARD

ASS"Y

NAPS-4213-1

POWER

SUPPLY

CIRCUIT

(1)

PC

BOARD

ASS*Y

NAETC-4214-1

POWER

SUPPLY

CIRCUIT

(2)

PC

BOARD

ASS"Y

[D]

NAETC-4214-1A,

POWER

SUPPLY

CIRCUIT

(2)

PC

BOARD

ASS'Y

[P]

NAETC-4214-1B,

POWER

SUPPLY

CIRCUIT

(2)

PC

BOARD

ASS"Y

|W]