Onkyo A-7022 User manual

SERIAL

NO.

3006

ONKYO

SERVICE

MANUAL

OLID

STATE

STEREO

PRE

MAIN

AMPLIFIER

model

A-7022

UDO

COMPOREN

SPECIFICATIONS

Main

Amplifier

Section

Power

Output

Dynamic

200W

(THF

42)

150W

(IHF

8Q)

72W

+72W

(4Q

both

channel

driven}

65W

/65W

(8Q

each

channel

driven)

52W

+

52W

(8Q

both

channel

driven)

Continuous

Total

Harmonic

Distortion

0.1%

at

Rated

Output

0.03%,

at

1OW

Output

Inter

Modulation

Distortion

0.05%

at

Rated

Output

Power

Bandwidth

10-100,

000Hz(-3dB

THD

0.2%)

Signal

to

Noise

Ratio

110dB(IHF

A

NETWORK)

Damping

Factor

80

at

8

Rated

Input

and

Impedance

1V/100kQ

Load

Impedance

4-16Q

Pre

Amplifier

Section

{

i

PHONO-1/~2:1.

2/2.

4/4.

8mV

(50kQ)|

Inputs

TUNER,

AUX,

TAPE

PLAY:

Input

Sensitivity

100mV

(100k)

Total

Harmonic

Distortion

0.03%at

Rated

Output

Intermodulation

Distortion

0.05%

at

Rated

Output

Outputs

RIAA

Deviation

Phono

Overload

+0.

5dB

(30-15,

000Hz

)

300mV

RMS

at

1kHz,1.4V

RMS

at

10kHz

PHONO

-1/-2:75dB(THF

A

NETWORK)

TUNER/AUX:90dB(IHF

A

NETWORK)

Signal

to

Noise

Ratio

Features

Output

Voltage

1V

Tone

Control]

with

2dB/step

Switch

and

Frequency

Shift

type

BASS

:400/125Hz

TREBLE:

2k/8kHz

Frequency

Shift

Bass

Control

Treble

Control

+5

steps

Boost

and

Cut

+5

steps

Boost

and

Cut

Filter

HIGH

8kHz(6dB

/oct.

)

LOW

30Hz

(6dB

/

oct.

)

!

Muting

~20dB

,

Power

Supply

Rating

Loudness

+5dB

at

70Hz,

+5dB

at

10kHz

,

Semiconductors

Controls

POWER

SPEAKERS

(OFF,

A, B,

A+B)

SELECTOR(

AUX,

TUNER,

PHONO

1,

PHONO

2,

MIC)

Weight

TAPE

MONITOR(PRINT

1-2,

TAPE-1,

SOURCE,

TAPE-2,

PRINT

2-1)

Dimensions

MODE(REV,

NORM,

R+L,

L,

R)

VOLUME/BALANCE

TREBLE

BASS

FREQUENCY

SHIFT

SWITCH

BASS

(400Hz,

125Hz)

TREBLE(2kHz,

8kHz!

MUTING

LOUDNESS

FILTER

HIGH

LOW

PHONO

SENSITIVITY

(1.2/2.

4/4. 8mV)

PRE

MAIN

SEPARABLE

SWITCH(UNITE-SEPARATE)

PHONO-1,

PHONO-2,

TUNER,

AUX,

MIC

L/R

TAPE

PLAY-1,

TAPE

PLAY-2,

MAIN

IN

SPEAKER-A,

SPEAKER-B

TAPE

REC-1,

TAPE

REC-2

PRE

OUT

AC

OUTLET

UNS

WITCHED,

SWITCHED

x2

PHONES

2

Phono

inputs

2

Tape

Monitor

and

Printing

2dB

Step

Tone

Controller

2

Choice

of

Turn

over

Frequency

ASO

type

protection

circuit

Transient

Killer

circuit

Main

Amplifier

incorporating

OCL

circuit

MIC

input

Big

Phono

Overload

ac

110/120/220/240V

50/60Hz

44

Transistors,

30

Diodes,

2

Thermistors

16

5/8°W

x

53/8"H

x

14

3/4"D

423mm

W

x

136mm

H

x

373mm

D

10.5kgr,

23lbs

1.

COMPONENT

LOCATIONS

DESCRIPTION DESCRIPTION

Amp

Box

assembly

Soft

Block

Front

Fiber

Board

Front

Cover

Eind

Cap

Flat

Screw(3S

+5F)

Joiner

Pan

head

Screw(3P+8F)

Knob—Push

Switch

Binder

Screw(3+6)

Knob—

Tone

Front

Panel

Facet

Knob—

Volume

Knob

—Balance

Knob

Sheet

Knob—

Selector

Rubber

Cushion

Tapping

Screw(4+12)

Bottom

Cover

Chassis

Toothed

Lock

Washer

Truss

Screw(4+20)

Soft

Block

Knob

Guide

Knob

—

Tape

Facet

Ring

Concave

Washer

Knob

—

Speaker

2.

ADJUSTMENT

OF

THE

IDLING

CURRENT

[40.5

cos

+6

|

Re

Ray

220/63

ae

|

R329

0301

R328

aio

~----,

Reh.

Q305

1%

8

(21)

—

0327

;

KS)

as

P

Q311.0"

0.047

LS

-

+13

0,

0

1

kK)

2

ty?

]

O71

30

10P/500

100

rat

Et

R319

—N,

=

22K

Rad7

1

AJ

(1/2

|

R367

TRL

a

($23,

R369

68

(17

2)

CO

33725

ca

yenmoss

Gum

jeouT

LO

£50my

R307

KU

0.047

ie

680

R321

L301

1apH

fe

#313

339

R309

100

/

30

|

-

mov)

‘@

Q005

6.067

0309

Scar

»

Yas

(i)

|

W2-210

|

5

‘sp.

R323

R369

0307

SS

ax4

\-24V

4.7K

SS

ELK

S471

6

Q3

(172)

1472)

[~4.3¥]

30P

IN6O

R339

5329

l

R371

333

:

22k

=

D311

01

R325

D305

wv?)

(172)

1001

680

191555

l

re

1K)

“8

ool

OE

(nau

7470/50

|

Rech

LoL

ORO

_t

Instrument

required

:

DC

Ammeter

50mA

or

100mA.

DC

Voltmeter

50mV

or

VTVM.

When

replacing

the

POWER

transistor

(Q003,

Q004,

Q005,

Q006)

or

the

DRIVER

transistor

(Q311,

Q312,

Q313,

Q314),

check

the

idling

current

of

the

POWER

transistor.

To

adjust

to

normal

value

(40+5)mA,

proceed

as

follows.

(Leh)

(1)

Cut

the

connection

between

+B

and

collector

of

Q003

on

MAIN

Amp

assembly,

and

connect

a

DC

Ammeter.

(2)

Adjust

the

current

to

(40+5)mA,

with

R319(2.2kQ)

after

switching

on

for

10

minutes.

(3)

After

adjusting,

connect

original

wiring.

If

a

DC

Voltmeter

(50mV)

or

VIVM

is

available,

connect

the

Voltmeter

betweenE]

and

TP

terminals.

Adjust

the

voltage

to

(20+2.5)mV

with

R319(2.2kQ).

(Rech)

Using

R320(2.2kQ),

adjust

in

the

same

manner

as

indicated

above.

*

Note:

Volume—Minimum.

Open

Load.

3.

PARTS

LIST

DESCRIPTION

SPECIFICATION

|Q’TY|

STOCK

NO.

Equalizer

Amp

ass’y

NAEQ-206

12939506

Tone

Amp

ass’y

NATC-186b

12939586B

Main

Amp

ass’y

NAMA~187a

12939587A

Power

Supply

ass’y

NAFI-207

12939507

Protector

ass’y

NAPC-208

12939508

Transistor

25C945(P)

2210353

ZSD¢27

25

D218(M

2200042

2200142

25899

/

PARTS

NO.

DESCRIPTION

SPECIFICATION

(QTY

STOCK

NO.

PL0O1

Pilot

Lamp

6.3V0.15A

1

210003

T001

Transformer-Power

NPT-552ADGQ

1

230056

ore

Capacitor-Electrolytic

CE62W50V8200uF

2

|

3504035A

CE04W50V33uF

2

|

325783301A

C305,

306

|

Capacitor-SP

SP04C25V2.

2uF

4

|

392250229

cea8

V

SP04C25V10uF

2

Volume

RO15

Variable

Resistor

N24RDGSOOKMN250KB2T

|

1

|

5104006

Balance

S001

S

witch-Rotaly

NRS-385-20Y

1

|

250165-1

Selector

S003

"

NRS~465-15Y

1

|

350175-2

Tape

Monitor

S004

"

NRS-125-15Y

1

250180-1

Mode

S008,

S009

”

NRS-2211-20Yb

2

250117

Tone

S013

¥

NRS-124-20Y

1

250118-1

Speakers

S002

Switch-Slide

NSS-2323

1

|

250121

Phono

Sens

S012

"

NSS-4224

1

250122

Pre

Main

$005,010

Switch—Lever

NLS-122-29S

L

4

|

2501191

Mvtng

adness

S006,

007

y

NLS~-142-29S

L 2

|

250120-1

Frequency

Shift

S01

S

witch-Power

NPS111LA2

1

|

250157

S015

Klixon

9700L-26-11

1

|

252009

S016

"

9700L-21-11

1

|

252011

Jack-Stereo

Head

Phone

3P64M

1

250126

Jack-Microphone

HJ-631S-H-3

2

|

250176~1

F001

Fuse

1.5A-T

1

|

252015

F002

"

2A-T

1

|

252002

Amp

Box

ass’y

1

|

280762

Front

Panel

1

|

280759

End

Cap

2

280367

Facet

1

|

280556

Joiner

4

|

280376

Knob-Tone

2

|

283085

Knob-Selector

1

|

283086

Knob-Volume

1

|

283087

Knob-Balance

1

|

283088

Knob-S

peaker

1

283096

Knob-Tape

ass'y

2

283103

Knob-Power

1

283071

Bottom

Cover

1

270295

Rubber

Cushion

4

|

280379

Master

Carton

Box

1

290378

Side

Pad

2

|

290203-1

NATC-186b

OO

Q201~

Q204'

Transistor

—

25

A493(GR)

4

|

2210235

=|

_

Q205,

Q206

”

25C1000(0-1)

2

|

2210280

Q207,

Q208

|

"

25C733(GR)

2

|

2210085

Q209

"

2SC734(0-1)

1

|

2210060

D201,

D203

|

Silicon

Diode

1S1554

2

|

223106

C201,C202

Capacitor-Electrolytic

CE04W

25V0.

47uF

2

|

352754791A

C205,

C206

q

CE04W6.

3V100uF

2

|

352721011A

C203,

C204

|

n

CE04W35V220uF

1

|

352762211A

C229

~

C232

SP04C25V2.2uF(M)

4

3500023

Capacitor-SP

Relay

PARTS

NO.

DESCRIPTION

SPECIFICATION

(Q’TY|

STOCK

NO.

C233~

C234]

Capacitor-SNP

|

SNP04C25V22uF(M)

|

2

|

3500027

y

|

»

2.2uF(M)

2

|

3500025

NAMA-187a

-

Q301~

Q304|

Transistor

25C€1000(0-1)

4

|

2210280

313

Q314

”

2S

A706(52)

4

|

2200032

Q307,

Q308

y

2SC735(GR)

2

|

2210245

Q309,

Q310

|

»

25

A562(GR)

2»

2210255

Q311,

Q312

y

25C1124(2)

2

2200016

Paes,

Dane

|

Silicon

Diode

1$1555

4

|

223105

D311

1

10D1

1

|

223801

Dag”

Daog

|

Germanium

Diode

1N60(N)FM

4

|

2231031

D309

Zener

Diode

W

Z-210

1

|

223921

1.301,

L302

Coil-Load

Compensation

S-1.

3B

2

231001

C309,

C310

Capacitor-Electrolytic

CE04W

6.

3V220uF

2

|

352722211A

C341

"

50V470uF

|

1

|

352784711A

R319,

R320

|

Resistor-Semi

Fixed

R-HK2.

2KB

2

|

5225005

TH301,

TH302

|

Thermistor

D-22A

|

2

|

4000003

NAEQ-206

Q101,

Q102

|

Transistor

2SA493(GR)

2

2210235

Q103,

Q104

|

n

2SC1000(0-1)

|

2

|

2210280

Q105,

Q106

|

"

2SC1124(3)

2

|

2200101

D101,

D102

Silicon

Diode

181555

2

223105

Capacitor—Electrolytic

CE04W

16V47uF

2

352744701A

"

”

6,3V220uF

2

|

352722211A

" »

25V100uF

3

|

352751011A

C101,

C102

|

Capacitor-SP

SP04C25V2.

2uF

2

|

3500023

C125,

C126

"

10uF

2

}

3500024

NAFI-207

-

Q401,Q407

Transistor

25D234(0)

2

|

2200113

|

Q403—

|

"

2SA561(0)

1

|

2210073

Q405

”

25C945(P)

1

|

2210353

D403

Silicon

Diode

10DC2R

1

|

223813

D405

"

10D1

1

|

223801

D401

Zener

Diode

|

WZ-270

1

|

223922

NAPC-208

Q501.

|

Transistor

25C945(P)

"1

|

200353

=]

Q503

n

2$C945(Q)

1

|

2210354

Q505

"

2SD235

|

1

|

2200013

Q507,

Q509

|

4

2S

C634A

(70)

2

|

2210187

Dae’

Deis

|

Silicon

Diode

10D1

4

223801

D523)

D525

'

SR3AM-6B

4

|

223815

Des.

Deon

|

Germanum

Diode

1N60(N)FM

4

2231031

D513

|

Zener

Diode

BZ-120

1

223918

©

C501

Capacitor-Electrolytic

CE04W25V1uF

1

|

392750101A

C503

"

»

16V100uF

1

352741011A

C505

y ”

—

1000uF

1

|

352741021A

C513,

C515

"

CE04W50V

47uF

2

|

302784701A

C521,

C523

n

»

25V220uF

2

|

392752211A

S501

NRSP5A-DC12

1

|

250166

4.

PACKING

PROCEDURE

1.

Tighten

SPEAKER

terminals

by

a

hand.

9

Clean

an

AMP

BOX

assembly,

attending

to

your

fingerprints.

Set

a

SENSITIVITY

SWITCH

to

center

(2.

4mV).

Clean

a

REAR

PANEL

and

a

RADIATOR.

Insert

SHORTED

into

PHONO

—

1,2

terminals.

Wrap

a

POWER

CORD

with

a

AC

CORD

WRAPPER

and

bind

it

with

a

rubber

band.

7.

Wrap

unit

with

a

AMP

COVER

and

attach

a

SIDE

PAD

to

both

sides.

g

Put

in

a

CARTON

BOX

and

make

sure

the

front

marks

of

the

carton

matches

the

unit

front.

9.

Put

an

ACCESSORY

BAG

including

an

INSTRUCTION

BOOKLET,

WARRANTY

CARD

ete.

in

the

box.

10.

Close

the

CARTON

BOX

and

seal.

a

oe

&

AMP

BOX

ASSEMBLY

pega

«|

©)

e)

(AON

Bi

|

eicledeicte

sf

|

Ey

|

REAR

PANEL

iSssss

">

SPEAKER

WSS

TERMINAL

Or

ern

VOLT

CAUTION

TAG

Fa

os

WRAPPE

Gv

LABEL

li

R

TRANSIENT

KILLER

TAG

SIDE

PAD

S007

LOW

FREQUENCY

SHIFT

125Hz.

400Hz

(400Hz)

$008

TREBLE

$10,

-8.-6.-4.+2.

FLAT.

«2.

24..6.+8.

«10

(FLAT)

S009

BASS

=10.-8

-6.-4.~+2,

FLAT

«2.64.

+658.

+10

(FLAT)

$010

LOW

FILTER

OFF.

ON.

a

$011

HIGH

FILTER

OFF.

ON.

(OFF

$012.

PRE-MAIN

UNITE.

SEPARATE.

(UNITE)

$013.

SPEAKERS

OFF.

A.

8

A+B.

(A)

$014

POWER

OFF.

ON.

(OFF)

$017.

LOUDNESS

OFF.

ON.

(OFF)

Qidt

284493(GR)

Q103

25C€1000

(0-2)

Q105

2501124

(3)

Q201.0203

25A493(GR)

Q205

25C

1000

(0-1)

Q207.G208

25C733(GR)

Q209

28€

734

(0-1)

Q301.

4303

28C

1000

(0-1)

Q305

254706(52)

-

Q307

2SC

735

(GR)

Q309

2SA562

(GR)

Q311

28C€1124(2)

Q313

284706

(52)

Q401

280234(0)

Q403

2S4561

(0)

405

2S8C945(P)

Q407

280234

(0)

Q501

2SC945(P)

deer

osoo

|

fseeae

90

ool

decane

aoo1

2SC945(P

Q003

2$0218(M)

Q005

at

yitit

oO

o

DC

VOLTAGE

((—¥1)

MEASURED

WITH

OC

VTVM

TO

CHASIS

AT

NO

SIGNAL

INPUT.

ALL

RESISTORS

ARE

IN

OHMS.

VGWATT

UNLESS

OTHERWISE

NOTED.

ALL

CAPACITORS

ARE

IN

pF

UNLESS

OTHERWISE

NOTED.

ELECTROLYTIC

CAPACITORS

(—-#R—)

ARE

IN

pF/Wy.

NAEQ-206

PHONO

-1

73

Sees

ie

coot

T

0047

PHONO

-2

(Q-¢———-—___—

'poos

GNO

TUNER

AUX

TAPE

-1

PLAY

@

Ww

FA

2

°

e

a)

SELECTOR

AUX.

TUNER.

PHONO-1.

PHONO-2.

MIC.(PHONO-1)

PHONO

SENS

1.2mV.

2amV.

48mV.(2.4mvV)

TAPE

MONITOR

12.

TAPE-1.

SOURCE.

TAPE-2.

2-~1.(SOURCE)

MODE

REV.

STEREO.

L.

L+R.

A.

(STEREO)

MUTING

0.

-20dB.

(0)

HIGH

FREQUENCY

SHIFT

2KHz.

8KHz.

(2KHz)

REC

73

S003

=3:fi

os

Se

aed

ee

cis

cng

00036)

O01

S064:

2R

coi?

oo

cos

O15

BASS-

UNIT

R179

150K

NATC-

186b

So

err

4+

83

R203

!

150K

'

Q201

-IN

é

R021

15M

zor

SOIT

Gen”

Lal

RO87

=

Rot

re

aoc!

$005

a

|

7

RoIS0

R017

g

SOOKMN

18K

—

nOwSe

7508

bs

te

yt

BALANCE

=

VOLUME

R601

3312)

wOOC2R

lah

Qi2/25

SP

:

aoe

7

R201

:

‘he

1M

BP

33K

;

ee

|

Fear

|

om

»

wn

Rg

C225

O01)

e

a

I

Ay

8

y

x2

"as

a

2

°

4

3

ral

bh

oo

oe

2

a8

ze

A211

Cz

i

0047

R215

C209

2.2K

at

Be

16

R217

1

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7.

LINE

VOLTAGE

AND

FUSE

The

model

A—7022

operates

on

one

of

the

four

line

voltages,

110V,

120V,

220V,

and

240V.

Set

the

unit

to

the

proper

line

voltage

by

following

the

procedure

described

below.

CHANGING

LINE

VOLTAGE

SETTING

AND

FUSE

Turn

the

voltage

selector

so

that

the

proper

line

voltage

marking

can

be

seen

through

the

slot

on

the

rear

panel.

4

x

Whenever

the

position

of

the

selector

is

changed,

check

the

rating

of

the

fuse.

4)

op

~

A

2A

fuse

is

to

be

used

for

either

220V

or

240V

operation

and

a

4A

fuse

for

110V

or

120V

operation.

25h

(6

YC

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WH

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(dow

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Onkyo A-7022 User manual

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