Onkyo TX-850 Manuale utente

TX-850

SERIAL

NO.

3292

ONKYO

SERVICE

MANUAL

QUARTZ

SYNTHESIZED

TUNER

AMPLIFIER

MODELS

TX-850/TX-850M

Black

model

BHUD,

BHUDN,

MBHUDN

120V

AC,

60Hz

BHUG

220V

AC,

50Hz

BHUQA

240V

AC,

50Hz

BHUW,

MBHUWX

120/220V

AC,

50/60Hz

SAFETY-RELATED

COMPONENT

WARNING!

COMPONENTS

IDENTIFIED

MARK

THE

SCHEMATIC

DIAGRAM

AND

THE

PARTS

LIST

ARE

CRITICAL

FOR

RISK

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

THESE

COMPO-

NENTS

WITH

ONKYO

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL.

MAKE

LEAKAGE-CURRENT

RESISTANCE

MEASUREMENTS

DETERMINE

THAT

EXPOSED

PARTS

ARE

ACCEPTABLY

INSULATED

FROM

THE

SUPPLY

CIRCUIT

BEFORE

RETURNING

THE

APPLIANCE

THE

CUSTOMER,

ONKYO

AUDIO

COMPONENTS

SPECIFICATIONS

AMPLIFIER

SECTION

Power

output

Musical

Power

Output

Continuous

Power

Output.

Total

Harmonic

Distortion:

Damping

Factor:

Frequency

Response:

RIAA

Diviation:

Sensitivity

and

Impedance:

Phono

Overload(MM);

Signal-to-

Noise

Ratio;

Tone

controls:

TUNER

SECTION

FM:

‘Tuning

Range:

Usable

Sensitivity:

50dB

Quieting

Sensi

Capture

Ratio

Image

Rejection

Ratio:

Rejection

Ratio:

Signal-to-

Noise

Ratio:

Alternate

Channel

Attenuation:

Selectivity

suppression

Ratio:

Harmonic

Distortion:

Frequency

Response:

Stereo

Separation:

Mating

Level:

AM:

Tuning

Range:

Usable

Sensitivity:

Image

Rejection

Ratio:

Rejection

Ratio:

Signal

to-

Noise

Ratio:

Harmonie

Distortion:

GENERAL

Dimensions(W

HD):

Weight:

watts

per

channel,

min,

RMS,

80hms.

both

channels

driven.from

20Hz

20kHz,

with

than

0.04"

total

harmonic

distortion.

2x175

watts

ohms,

1kHz

(DIN)

2110

watts

ohms,

1kHz

(DIN)

2100

watts

ohms,

1kHz

(DIN)

2x75

watts

ohms,

1kHz

(DIN)

0.04%

rated

power

0.04%

watts

output

0.04%

rated

power

0.04%

watts

output

ohms

20-30,000Hz

+1dB

O00Hz

+0.8dB

Phono:

"/50

kohms

cD:

kohms

Tape

Play:

30.

kohms

Tape

Rec:

kohms

120mV

RMS

1kHz,

0.04%

THD.

Phono:

85dBiat

10mV

input,

weighted)

T5dBUIHF

A-202)

CD/Tape:

95dBtA

weighterd)

80dBUHF

A-202)

Bass:

+10dB

100Hz

Treble:

+10dB

1l0kHz

~220V/240v/

pang

models~

steps)

‘KN

T5ohms

0.9

wV(SEN

26dB40kHz

Devid

75ohms

DIN

18.0dBf,2.2

4¢V,750hms

46dB40kHz

Devi.)

75ohms

DIN

Mono:

18.0dBE2.2

Stereo:

372d

20pV,

1.5dB

85dB

90dB,

Mono:

Stereo:

50dB

DIN(

+300KHz40kHz

dev)

50dB.

Mono:

0.15%

Stereo:

0.25%

15,000Hz

+1.5dB

45dB

30dB

100

10,000Hz

17.2dBf,

4.0¢V

16KHA

9kHz

steps)

522

1611kHz(

9kHz

steps)

530.

1620kHZ(10KHz

steps)

(Worldwide

model)

300

40aB

s0aB,

svdB

0.7%

435

130

351mm

17-1/8"

5-1/8"

X13-13/16"

askg.

19.4lbs.

-120V

model-

-107.9kHz(200kHz

steps)

Mono:

10.8dBE19¢V

Stereo:

17.2dBi4.0

Mono:

172dBi40

Stereo:

37.2dBiA0uV

1.5dB

40dB.

40dB

Mono;

Stereo:

5odB

50dB

Mono:

Stereo:

15,000H2

dodB

kHz

30dB

100°

10,000Hz

17.2dBf.

4.02V

030°

1620kH2(10kHz

steps)

30nV

40dB

4udB

40dB

0.7%

REMOTE

CONTROL

TRANSMITTER

RC-119S/RC-118S

‘Transmitter:

Infrared

Signal

range:

Approx.

Smeters(16ft.4")

Power

supply:

TWO

"AA”

batteries

(1.5V

*2)

Dimensions(W

HD):

64*

176mm

2-1/2"

x3/4"

Weight:

M0grams

5.00z{including

batteries)

Specifications

and

features

are

subject

change

without

notice.

SERVICE

PROCEDURES

Replacing

the

fuses

For

continued

protection

against

fire

hazard,

replace

only

with

same

type

and

same

rating

fuse.

D(120V)

model

Circuit

no.

Partno.

Description

F901

252050

(ST-6),

Primary

(220V)

and

(240V)

models

Circuit

no.

Partno.

—

Description

F902

252075

2.5A-SE-EAK,

Primary

F903

252075

2.SA-SE-EAK,

outlet

(Only

220V

model)

F906

252070

1A-SE-EAK,

Secondary

(Worldwide)

model

Circuitno.

Partno,

Description

F901

252050

(ST-6),

Primary

F902

252075

—

2.5A-SE-EAK,

Primary

Change

FM/AM

band

step.

With

the

exception

the

models

below,

BAND

STEP

selector

switch

not

provided.

(FM)

MODEL

BAND

STEP

_D717,J753

R119

200kHz>S50kHz

Additional

15k2—24kQ

UG/UQ

SOkHz+200kHz

Eliminated

24kQ+15k2

(AM)

BAND

STEP

D716,

3754

10kHz+

9kHz

Additional

9kH2>10kHz

Eliminated

D716/7

188133

(Part

No.

223163)

used.

J753/4,

jumper

lead

must

inserted.

R119,

with

the

muting

amplitude

determined.

the

back

panel

side

FM/AM

tuner

and

selector

circuit

printed

circuit

board

assembly

test

points

TP-1

and

TP-2.

—

Worldwide

model

—

Worldwide

models

are

equipped

with

step

band

selector

switch.

This

switch

located

the

back

panel.

This

switch

set

SOkHz

(FM)

and

9kHz

(AM)

the

factory,

but

may

have

reset

200kHz

and

10kHz

depending

the

area

where

the

unit

used.

De-emphasis

step

Europe:

usec

SOkHz

9kHz

US.A.:

psec

200kHz

10kHz

Memory

preservation.

This

unit

does

not

require

memory

preservation

batteries.

built-in

memory

power

back-up

system

preserves

contents

the

memory

during

power

failures

and

even

when

the

unit

unplugged.

The

unit

must

plugged

BACK

PANNEL

F906

FM/AM

TUNER

AND

SELECTOR

CIRCUIT

BARD

roo

rsa

e901

£8

POWER

SUPPLY

CIRCUIT

BOARD

DISPLAY

BOARD

and

the

power

switch

turned

and

off

once

order

charge

the

back-up

system.

Note

that

since

this

not

permanent

memory

the

power

switch

must

turned

and

off

few

times

each

month

keep

the

back-up

system

operative.

The

period

time

during

which

memory

contents

are

preserved

after

power

has

last

been

turned

off

varies

depending

climate

and

placement

the

unit.

the

average,

memory

contents

are

protected

over

period

weeks

minimum

weeks)

after

the

last

time

power

has

been

turned

off.

This

period

shorter

when

the

unit

exposed

very

high

humidity

used

area

with

extremely

humid

climate.

Safety-check

out

(Only

U.S.A.

model)

After

correcting

the

original

service

problem

perform

the

following

safety

check

before

releasing

the

set

the

customer.

Connect

the

insulating-resistance

tester

between

the

plug

power

supply

cord

and

terminal

GND

the

back

panel.

Specifications:

3.3

Mohm

+10%

S00V.

Change

voltage

Worldwide

models

are

equipped

with

voltage

selector

conform

with

local

power

supplies.

This

switch

located

the

back

panel.

sure

set

this

switch

match

the

voltage

the

power

supply

your

area

before

turning

the

power

switch

on.

This

switch

set

220V

the

factory.

Voltage

changed

sliding

the

groove

the

switch

with

the

screw-

driver

the

right

left.

Confirm

that

the

switch

has

been

moved

all

the

way

the

right

left

before

turning

the

power

switch

on.

EXPLODED

VIEW

P902,903

(G/a/w)

PARTS

LIST

REF.

NO.

PART

NO.

AS&

Alo

All

Al2

AlS

Al4

Al5

Al7

Al’

Ald

A20

A21

A22

A23

A24

A25

A32

Ad2

A43

ADL

ASS:

AS7

A61

A8l

A82

A83

A84

A85,

A86

A87

A88

A89

F901

F902

27100163

27121106

27121107

27121109

27121110

27121111

27141261A

27141262

27160225,

27141263

27141264

27190644

27273098A

28133198A

28130249

27270147

870048

27300750

27190524

834430088

831130088

830440089

834430108

834230108

82143006

82142004

833430080,

271104184

28184394

834430088,

801230

1A091121

833430080

28191466A

27175142

28323241

28323361

28323363

28323365A.

28323310

28322925,

28323367

27190647

28323369

252050

252075,

DESCRIPTION

Chassis

Back

panel

<D>

Back

panel

<G>

Back

panel

<W>

Back

panel

<PX>

Back

panel

<Q>

Bracket

Radiator

Bracket

Holder,dial

plate

Joint,power

Back

plate

Dial

plate

Spacer

X8xX0.8t,Nylon

washer

Strainrelief

Holder

38TTS+8B(BC),Tapping

screw

3TTW+8B,Tapping

screw

A4TTC+8C(BC),Tapping

screw

3TTS+10B(BC),

Tapping

screw

3TTS+10B(Ni),Nickel

screw

3P+6FN(BC),Pan

head

screw

2P+4F(BC),Pan

head

screw

3TTP+8P(BC),Tapping

screw

Front

bracket

ass'y

Top

cover

3TTS+8B(BC),Tapping

screw

3STS+8BQ(BC),

Tapping

screw

Front

panel

ass’y

3TTP+8P(BC),Tapping

screw

Clear

plate

Leg

Knob

POWER

Knob

SPEAKER

Knob

SPEAKER

Knob

VOLUME

Knob

TONE

Knob

SLIDE

Knob

PUSH

Knob

SLIDE

Knob

PUSH

\A(ST-6),Primary

fuse

»SA-SE-EAK,Primary

fuse

<G/

W/PX/Q>

REF.

NO.

PART

NO.

DESCRIPTION

F903

252075,

2.5A-SE-EAK,AC

outlet

fuse

<G>

F906

252070

1A-SE-EAK,Secondary

fuse

<G/Q>

P304

25060044

14mm,Terminal

GND

P901

253123,

AS-UC-6

18,Power

supply

cord

253136,

<D/PX

253140

253146

253148

AS-CEE,Power

supply

cord

<G/

253150

253118

‘

AS-SAA,Power

supply

cord

<Q>

P902

25050341

NSCT-4P168T,AC

outlet

<D/PX>

P902,P903

25050337

NSCT-2P164,AC

outlet

<G/W>

2501653,

2SC3856(0),

2201654

—

2SC3856(Y)

2201655

2SC3856(P),Power

amplifier

tran-

sistor

Q523,Q524

2201663,

2SA1492(0),

2201664

2SA1492(Y)

2201665

2SA1492(P),Power

amplifier

tran-

sistor

$903,

25065123,

NPS-1258P,Voltage

selector

switch

<W>

TOOL

2300303

NPT-992D,Power

transformer

<D>

2300304

NPT-992G,Power

transformer

<G>

2300305

NPT-992DG,Power

transformer

<w/PX>

2300339

NPT-992Q,Power

transformer

<Q>

1A090576-1

NAAR~-3276-1,FM/AM

tuner

and

selector

circuit

board

ass'y

<D>

1A090576-1A_

NAAR~-3276-1A,

FM/AM

tuner

and

selector

circuit

board

ass'y

<G/®

1A091576-1B

NAAR~-3276-1B,

FM/AM

tuner

and

selector

circuit

board

ass’y

<W/PX>

1A090577-1_

NAAF~-3277-1,Power

amplifier

board

ass'y

1A090578-1

NASW~-3278-1,Speaker

switch

board

ass'y

1A090578-1A_

NASW-~-3278-1A,

Speaker

switch

board

ass'y

<G/Q>

1A090579-1_

NAETC-3279-1,Speaker

terminal

board

ass’y

<D>

1A090579-1A_

NAETC-3279-1A,

Speaker

termi-

nal

board

ass'y

REF.

NO.

PART

NO.

DESCRIPTION

1A090580-1

NAETC-3280-1,Const.

voltage

cir-

cuit

board

ass'y

1A090581-1_

NADIS-3281-1,Display

board

ass'y

<D>

NADIS-3281-1A,

Display

board

ass'y

<G/Q>

NADIS-3281-1B,

Display

board

ass'y

<W/PX>

NAAF-3282-1,Volume

board

ass'y

<D>

NAAF-3282-1A,

Volume

board

ass'y

NAAF-3283-1,Preamplifier

board

ass’y

<D>

NAAEF-3283-1A,

Preamplifier

board

ass'y

<G/W/PX/Q

1A090581-1A

1A091581-1B

1A090582-1

1A090582-1A,

1A090583-1

1A090583-1A,

1A090584-1

NAAF-3284-1,Switch

pce

board

ass'y

Ul0

1A090585-1

NADIS~3285-1,Volume

indicator

board

ass’y

1A090586-1

NAETC-3286-1,Video

terminal

board

ass'y

<D/PX>

NAETC-3286-1A,

Video

terminal

board

ass'y

<G/W/Q>

NAPS-~3287-1,Power

supply

circuit

board

ass'y

<D>

NAPS-3287-1A,Power

supply

cir-

cuit

board

ass'y

<G>

NAPS-3287-1B,Power

supply

cir-

cuit

board

ass'y

<W/PX>

NAPS-3287-1C,Power

supply

cir-

cuit

board

ass'y

<Q?

Equalizer

amplifier

Equalizer

amplifier

board

ass'y

<G/W/PX/Q

1A090586-1A

Ul2

1A090587-1

1A090587-1A,

1A091587-1B

1A091587-1C.

Ula

1A073554-2

1A086554-3

NOTE:

“D>:

Only

120V

model

<G>:

Only

220V

model

<W>:

Only

Wolrdwide

model

<PX>:

Only

model

<Q:

Only

240V

model

NOTE:

THE

COMPONENTS

IDENTIFIED

MARKA\

ARE

CRITICAL

FOR

RISK

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

ONLY

WITH

PART

NUMBERS

SPECIFIED.

BLOCK

DIAGRAM

—120V

MODEL—

TUNER

SECTION

001

ANTENNA

TERMINAL

[ru001

Teew

AND

RADIO

SYSTEM

L__vco

sto.

azo1

STEREO

DECODER

roe

aovust

‘SIGNAL

OUT:

REMOTE

CONTROLLER

701

SEGMENT

OUT

VCR

RELAY.

Power:

MUTING.

SEL

MUTE:

PROTECT

Rioz

SIGNAL,

Cever

MICROPROCESSOR

oisit

out

703

FLUORESCENT

TUBE

fae

+24

RLTOL

TUBE

RELAY

K+

‘c202

HI-BLEND

SWITCH

STEREO.

2206

MUTE

‘SwiTcH)

207

care

circuit

9208

Wore

SWITCH

ern

AMPLIFIER

SECTION

LAYER.

Bin

Been

ken

awe

sam

ane

R351

hen

-Teiae

VOLUME

TEE

oncn

Beg

Vee

‘On

[ANALOG

SWITCH

[CONTROL/SHIFT

REGISTOR/LATCH/

LEVEL

SHIFT.

—

efisuer

ire

ete

ee!

o2st

1252-0254

“si

ciRCUIT

iis

ssi

bad

PSO3

L901

ourcer

Relay

1901

POWER:

Fo)

NEE

sate

fa201

ele

[tex

-O-#

geaae

Lat

D908

[asoe

const,

assy)

VOLTAGE

Sires

ero!

L_++estzav

bate

908

2t-13v)

sPeaKer

TERMINALS

BLOCK

DIAGRAM

—OTHER

MODELS

—

TUNER

SECTION

Poo!

ANTENNA

TERMINAL

Jo101-ai03

750

FMF

ame

[FM

704

REMOTE

CONTROLLER

-voP:

VER

RELAY:

POWER’

AND

‘AM

RADIO

SYSTEM

R102

SIGNAL,

LEVEL

MICROPROCESSOR

SEGMENT

OUT

o1GIT

OUT

MUTING.

+———

Se.

MUTE.

PROTECT.

703

FLUORESCENT

TUBE

-—

ISI

TUNED

LEVEL

+84

RL7OI

TUBE

RELAY

Tai

Eiteed

pate

R201

ADuUST.

Kiss

ast

Switch

azo

eee

eral,»

angus

[is

eee

reat

Ree

AMPLIFIER

SECTION

PLAYER

cam

webre

runero—

Cnncuuen

228

bn}

casserve

cae

808

puono

Hono

VCR

1/VOP.

nec

TAPE

nec

eed

(aa

wees

rec

sasibssafssss

ver

[

Janaos

swrren

[enrmocranirt

fessor

wore

smT

Lah]

MODE

‘cERCUIT

100

aes

svsvew

our

ver

VOR

Sere

const

Sty

VOLTAGE

‘ORIVE

225

-~O

ven

nec

Sirren

iROPROCESSO

wowrto

cureee

tenorrone

RELAY

POWER,

}oos1

eal

SPEAKER:

Fo05)

Eel

ane

threw

Ske

ean

eons.

sosisyy

SATE

P902

903

VOLTAGE

cpa

osor

L_.

+a3(22v)

B6(-28¥)

CONNECTION

VIEW

MICROPROCESSOR

wa_[

[

rewore|

sere]

[coo

|rwmrd

au_[

_|pnono!

rapes

[rarer|

ver

KEY

MATRIX

lotooe

Brsten|

mone

[aWoK

(eb

micropaocesscr

RADIO

‘SYSTEM

STEREO

[e201

45:

STEREO

‘AlpIo

Mure

stereo

stop

POWER

AMP

TERMINAL

faces

HIcLENo

Bam

ges

set

eur

narrne

207

‘GATE

CIRCUIT

PROTECT.

VIDEO

SECTION

vert

REC

vere

REC

MontroR:

vineo

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