Onkyo Tx-850 User manual

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

a

so

J

SAFETY-RELATED

COMPONENT

WARNING!

!

COMPONENTS

IDENTIFIED

BY

MARK

A

ON

THE

SCHEMATIC

DIAGRAM

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

THESE

COMPO-

NENTS

WITH

ONKYO

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL.

MAKE

LEAKAGE-CURRENT

OR

RESISTANCE

MEASUREMENTS

TO

DETERMINE

THAT

EXPOSED

PARTS

ARE

ACCEPTABLY

INSULATED

FROM

THE

SUPPLY

CIRCUIT

BEFORE

RETURNING

THE

APPLIANCE

TO

THE

CUSTOMER,

ONKYO

AUDIO

COMPONENTS

SPECIFICATIONS

AMPLIFIER

SECTION

Power

output

Musical

Power

Output

Continuous

Power

Output.

Total

Harmonic

Distortion:

IM

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:

IF

Rejection

Ratio:

Signal-to-

Noise

Ratio:

Alternate

Channel

Attenuation:

Selectivity

AM

suppression

Ratio:

Harmonic

Distortion:

Frequency

Response:

Stereo

Separation:

Mating

Level:

AM:

Tuning

Range:

Usable

Sensitivity:

Image

Rejection

Ratio:

IF

Rejection

Ratio:

Signal

to-

Noise

Ratio:

Harmonie

Distortion:

GENERAL

Dimensions(W

*

HD):

Weight:

68

watts

per

channel,

min,

RMS,

at

80hms.

both

channels

driven.from

20Hz

to

20kHz,

with

no

more

than

0.04"

total

harmonic

distortion.

2x175

watts

at

4

ohms,

1kHz

(DIN)

2110

watts

at

8

ohms,

1kHz

(DIN)

2100

watts

at

4

ohms,

1kHz

(DIN)

2x75

watts

at

8

ohms,

1kHz

(DIN)

0.04%

at

rated

power

0.04%

at

1

watts

output

0.04%

at

rated

power

0.04%

at

1

watts

output

40

at

8

ohms

20-30,000Hz

+1dB

20

O00Hz

+0.8dB

Phono:

"/50

kohms

cD:

30

kohms

Tape

Play:

30.

kohms

Tape

Rec:

kohms

120mV

RMS

at

1kHz,

0.04%

THD.

Phono:

85dBiat

10mV

input,

A

weighted)

T5dBUIHF

A-202)

CD/Tape:

95dBtA

weighterd)

80dBUHF

A-202)

Bass:

+10dB

at

100Hz

Treble:

+10dB

at

1l0kHz

~220V/240v/

pang

models~

steps)

or

‘KN

T5ohms

0.9

wV(SEN

26dB40kHz

Devid

75ohms

DIN

18.0dBf,2.2

4¢V,750hms

N

46dB40kHz

Devi.)

75ohms

DIN

Mono:

18.0dBE2.2

WV

Stereo:

372d

Bi

20pV,

1.5dB

85dB

90dB,

Mono:

Stereo:

50dB

DIN(

+300KHz40kHz

dev)

50dB.

Mono:

0.15%

Stereo:

0.25%

30

15,000Hz

+1.5dB

45dB

at

1k

30dB

at

100

10,000Hz

17.2dBf,

4.0¢V

16KHA

9kHz

steps)

522

1611kHz(

9kHz

steps)

or

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

pV

Mono:

172dBi40

pV

Stereo:

37.2dBiA0uV

1.5dB

40dB.

40dB

Mono;

Stereo:

5odB

50dB

Mono:

Stereo:

30

15,000H2

+1

5a

dodB

at

kHz

30dB

at

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*

18

176mm

2-1/2"

x3/4"

x

7"

Weight:

M0grams

5.00z{including

batteries)

Specifications

and

features

are

subject

to

change

without

notice.

SERVICE

PROCEDURES

1,

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

5A

(ST-6),

Primary

G

(220V)

and

Q

(240V)

models

Circuit

no.

Partno.

—

Description

F902

252075

2.5A-SE-EAK,

Primary

F903

252075

2.SA-SE-EAK,

AC

outlet

(Only

220V

model)

F906

252070

1A-SE-EAK,

Secondary

W

(Worldwide)

model

Circuitno.

Partno,

Description

F901

252050

5A

(ST-6),

Primary

F902

252075

—

2.5A-SE-EAK,

Primary

2.

Change

of

FM/AM

band

step.

With

the

exception

of

the

models

below,

a

BAND

STEP

selector

switch

is

not

provided.

(FM)

MODEL

BAND

STEP

|

_D717,J753

R119

UD

200kHz>S50kHz

|

Additional

|

15k2—24kQ

UG/UQ

|

SOkHz+200kHz

|

Eliminated

|

24kQ+15k2

(AM)

BAND

STEP

|

D716,

3754

10kHz+

9kHz

|

Additional

9kH2>10kHz

|

Eliminated

In

D716/7

188133

(Part

No.

223163)

is

used.

In

J753/4,

a

jumper

lead

must

be

inserted.

R119,

with

the

muting

amplitude

determined.

is

on

the

back

panel

side

of

FM/AM

tuner

and

selector

circuit

printed

circuit

board

assembly

test

points

TP-1

and

TP-2.

—

Worldwide

model

—

Worldwide

models

are

equipped

with

a

step

band

selector

switch.

This

switch

is

located

on

the

back

panel.

This

switch

is

set

to

SOkHz

(FM)

and

9kHz

(AM)

at

the

factory,

but

may

have

to

be

reset

to

200kHz

and

10kHz

depending

on

the

area

where

the

unit

is

used.

De-emphasis

FM

step

AM

step

Europe:

50

usec

SOkHz

9kHz

US.A.:

75

psec

200kHz

10kHz

3.

Memory

preservation.

This

unit

does

not

require

memory

preservation

batteries.

A

built-in

memory

power

back-up

system

preserves

contents

of

the

memory

during

power

failures

and

even

when

the

unit

is

unplugged.

The

unit

must

be

plugged

in

BACK

PANNEL

A

F906

FM/AM

TUNER

AND

SELECTOR

CIRCUIT

Pe

BARD

roo

A

rsa

A,

a

e901

£8

POWER

SUPPLY

CIRCUIT

PC

BOARD

DISPLAY

PC

BOARD

and

the

power

switch

turned

on

and

off

once

in

order

to

charge

the

back-up

system.

Note

that

since

this

is

not

a

permanent

memory

the

power

switch

must

be

turned

on

and

off

a

few

times

each

month

to

keep

the

back-up

system

operative.

The

period

of

time

during

which

memory

contents

are

preserved

after

power

has

last

been

turned

off

varies

depending

on

climate

and

placement

of

the

unit.

On

the

average,

memory

contents

are

protected

over

a

period

of

3

to

4

weeks

(a

minimum

of

2

weeks)

after

the

last

time

power

has

been

turned

off.

This

period

is

shorter

when

the

unit

is

exposed

to

very

high

humidity

or

used

in

an

area

with

an

extremely

humid

climate.

4.

Safety-check

out

(Only

U.S.A.

model)

After

correcting

the

original

service

problem

perform

the

following

safety

check

before

releasing

the

set

to

the

customer.

Connect

the

insulating-resistance

tester

between

the

plug

of

power

supply

cord

and

terminal

GND

on

the

back

panel.

Specifications:

3.3

Mohm

+10%

at

S00V.

5.

Change

of

voltage

Worldwide

models

are

equipped

with

a

voltage

selector

to

conform

with

local

power

supplies.

This

switch

is

located

on

the

back

panel.

Be

sure

to

set

this

switch

to

match

the

voltage

of

the

power

supply

in

your

area

before

turning

the

power

switch

on.

This

switch

is

set

to

220V

at

the

factory.

Voltage

is

changed

by

sliding

the

groove

in

the

switch

with

the

screw-

driver

to

the

right

or

left.

Confirm

that

the

switch

has

been

moved

all

the

way

to

the

right

or

left

before

turning

the

power

switch

on.

EXPLODED

VIEW

P902,903

(G/a/w)

EQ

PARTS

LIST

REF.

NO.

PART

NO.

Al

AQ

A3

Ad

AS

AT

AS&

AQ

Alo

All

Al2

AlS

Al4

Al5

Al7

Al’

Ald

A20

A21

A22

A23

A24

A25

A32

Al

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

LH

Bracket

RH

Radiator

Bracket

SH

Bracket

H

Holder,dial

plate

Joint,power

Back

plate

Dial

plate

Spacer

3

X8xX0.8t,Nylon

washer

4

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

A

Knob

SPEAKER

B

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

3X

14mm,Terminal

GND

P901

253123,

+,

AS-UC-6

#

18,Power

supply

cord

253136,

<D/PX

253140

or

253146

253148

or

A

AS-CEE,Power

supply

cord

<G/

253150

Ww

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

or

—

2SC3856(Y)

or

2201655

2SC3856(P),Power

amplifier

tran-

sistor

Q523,Q524

2201663,

2SA1492(0),

2201664

or

2SA1492(Y)

or

2201665

2SA1492(P),Power

amplifier

tran-

sistor

$903,

25065123,

|,

NPS-1258P,Voltage

selector

switch

<W>

TOOL

2300303

NPT-992D,Power

transformer

<D>

2300304

4,

NPT-992G,Power

transformer

<G>

2300305

*,

NPT-992DG,Power

transformer

<w/PX>

2300339

A

NPT-992Q,Power

transformer

<Q>

Ul

1A090576-1

NAAR~-3276-1,FM/AM

tuner

and

selector

circuit

pe

board

ass'y

<D>

1A090576-1A_

NAAR~-3276-1A,

FM/AM

tuner

and

selector

circuit

pe

board

ass'y

<G/®

1A091576-1B

NAAR~-3276-1B,

FM/AM

tuner

and

selector

circuit

pe

board

ass’y

<W/PX>

U2

1A090577-1_

NAAF~-3277-1,Power

amplifier

pe

board

ass'y

U3

1A090578-1

=

NASW~-3278-1,Speaker

switch

pe

board

ass'y

1A090578-1A_

NASW-~-3278-1A,

Speaker

switch

pe

board

ass'y

<G/Q>

U4

1A090579-1_

NAETC-3279-1,Speaker

terminal

pe

board

ass’y

<D>

1A090579-1A_

NAETC-3279-1A,

Speaker

termi-

nal

pe

board

ass'y

REF.

NO.

PART

NO.

DESCRIPTION

US

1A090580-1

NAETC-3280-1,Const.

voltage

cir-

cuit

pe

board

ass'y

U6

1A090581-1_

NADIS-3281-1,Display

pe

board

ass'y

<D>

NADIS-3281-1A,

Display

pe

board

ass'y

<G/Q>

NADIS-3281-1B,

Display

pe

board

ass'y

<W/PX>

NAAF-3282-1,Volume

pc

board

ass'y

<D>

NAAF-3282-1A,

Volume

pe

board

ass'y

NAAF-3283-1,Preamplifier

pc

board

ass’y

<D>

NAAEF-3283-1A,

Preamplifier

pc

board

ass'y

<G/W/PX/Q

1A090581-1A

1A091581-1B

U7

1A090582-1

1A090582-1A,

Us

1A090583-1

1A090583-1A,

ug

1A090584-1

=

NAAF-3284-1,Switch

pce

board

ass'y

Ul0

1A090585-1

=

NADIS~3285-1,Volume

indicator

pe

board

ass’y

Ul

1A090586-1

=

NAETC-3286-1,Video

terminal

pc

board

ass'y

<D/PX>

NAETC-3286-1A,

Video

terminal

pe

board

ass'y

<G/W/Q>

NAPS-~3287-1,Power

supply

circuit

pe

board

ass'y

<D>

NAPS-3287-1A,Power

supply

cir-

cuit

pe

board

ass'y

<G>

NAPS-3287-1B,Power

supply

cir-

cuit

pe

board

ass'y

<W/PX>

NAPS-3287-1C,Power

supply

cir-

cuit

pe

board

ass'y

<Q?

Equalizer

amplifier

<D

Equalizer

amplifier

pe

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

PX

model

<Q:

Only

240V

model

NOTE:

THE

COMPONENTS

IDENTIFIED

BY

MARKA\

ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

ONLY

WITH

PART

NUMBERS

SPECIFIED.

BLOCK

DIAGRAM

—120V

MODEL—

TUNER

SECTION

001

ANTENNA

TERMINAL

[ru001

Teew

FM

IF

AND

AM

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

FL

TUBE

SW

RELAY

K+

‘c202

HI-BLEND

SWITCH

STEREO.

2206

MUTE

‘SwiTcH)

207

care

circuit

9208

Wore

SWITCH

a

ern

AMPLIFIER

SECTION

LAYER.

gs

Bin

ao

Been

ken

-

eh

awe

ry

a

sam

me

ane

'

R351

1

=

hen

-Teiae

a

VOLUME

a

=

i

ee

TEE

oncn

Beg

Vee

:

‘On

[ANALOG

SWITCH

[CONTROL/SHIFT

REGISTOR/LATCH/

LEVEL

SHIFT.

@

if

—

J

efisuer

ire

ete

oa

ee!

oe

o2st

1252-0254

Tr

“si

ciRCUIT

Oe

iis

ae

ssi

bad

os

PSO3

L901

ourcer

Relay

ao

1901

POWER:

Fo)

NEE

sate

fa201

ele

..

|

[tex

-O-#

a

Op

geaae

_

Lat

D908

[asoe

i

_

const,

assy)

ae

VOLTAGE

fe

Sires

ero!

L_++estzav

bate

ae

908

2t-13v)

sPeaKer

TERMINALS

BLOCK

DIAGRAM

—OTHER

MODELS

—

TUNER

SECTION

Poo!

ANTENNA

TERMINAL

eM

Jo101-ai03

750

aM

FMF

ame

[FM

IN

704

REMOTE

CONTROLLER

-voP:

VER

RELAY:

-

POWER’

EM

IF

AND

‘AM

RADIO

SYSTEM

R102

SIGNAL,

LEVEL

MICROPROCESSOR

SEGMENT

OUT

o1GIT

OUT

MUTING.

+———

Se.

MUTE.

PROTECT.

703

FLUORESCENT

TUBE

-—

ISI

&

AM

TUNED

LEVEL

+84

RL7OI

FL

TUBE

SW

RELAY

Tai

Eiteed

pate

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CONNECTION

VIEW

OF

MICROPROCESSOR

wa_[

ws

|

we

[

wT

|

we

rewore|

sere]

wo

[coo

|rwmrd

uP

au_[

Fm

_|pnono!

rapes

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ver

KEY

MATRIX

lotooe

Brsten|

mone

[aWoK

(eb

us

micropaocesscr

14

AM

RADIO

‘SYSTEM

STEREO

[e201

45:

STEREO

‘AlpIo

Mure

stereo

oo

stop

oy

POWER

AMP

TO

SP

TERMINAL

faces

HIcLENo

a

Bam

L

oe

et

og

ges

gy

5a

set

eur

narrne

207

‘GATE

CIRCUIT

PROTECT.

VIDEO

SECTION

vert

REC

vere

REC

MontroR:

5"

vineo

sw

BLOCK

DIAGRAM

OF

ICS

LC6568H-3643

(MICROPROCESSOR)

Terminal

Descriptions

Pin No.

Terminal

Description

1

DI

These

are

the

digit

and

key

scan

signal

terminals.

2

D2

"H”

when

active.

3

D3

4

D4

5

D5

6

D6

7

D7

8

D8

9

DISPLAY

Display

output

terminal."H”

when

active.

10

Ko

These

are

the

input

terminal

for

key

return

signal

u

Kl

source

and

diode

matrix.”H”

when

active.

12

K2

13

K3

i

sD

Auto

stop

signal

input

terminal.Auto

tuning

stops

when

this

terminal

becomes

the

high

level.

15

STEREO

This

is

the

input

terminal

for

detection

of

the

stereo

broadcast.”L”

when

active.

16

PROTECT,

This

is

the

detection

terminal

for

protection

circuit.The

speaker

relay

turns

off

when

this

terminal

becomes

the

high

level.

Ww

POWER

OFF

|

This

is

the

input

terminal

for

detection

of

the

stoppage

of

electric

current."L”

when

the

stoppage

of

electric

current.

18

RELAY

This

is

the

output

terminal

for

control

of

the

speaker

relay.”L”

when

active.

19

SEL

MUTE

This

is

the

muting

output

terminal

when

the

selector

key

is

operated.”H”

when

active.

20

TU

MUTE

This

is

the

output

terminal

for

muting

control

of

tuner

section.”L”

when

active.

a

AUTO/MONO

_|

This

is

the

AUTO/MONO

switching

output

terminal.

“L”

when

AUTO.

22

VDP

These

are

the

output

terminal

for

control

of

video

signal.

23

VCR

24

MUTING

This

is

the

output

terminal

for

muting

control.

“H”

when

active.

5

POWER

This

is

the

output

terminal

for

power

source.It

is

"H”

for

power

on

26

HBON:

‘This

is

the

output

terminal

for

indication

of

HI-BLEND

ON. “L”

when

active.

aT

HB

OFF.

This

is

the

output

terminal

for

indication

of

HI-BLEND

OFF.

“L”

when

active.

28

DX

This

is

the

output

terminal

for

indication

of

DX.

"L”

when

active.

29

LOCAL

This

is

the

output

terminal

for

indication

of

LOCAL.

”L”

when

active.

30

TEST

Test

terminal.Connect

to

the

ground.

31

Vss

Ground

terminal.

32

Osci

Connect

to

the

4.00MHz

ceramic

oscillator.

33

osc2

34

RES

This

is

the

input

terminal

for

reset.

"L”

when

active

35

PLL

Connect

to

the

terminal

CE

of

PLL

IC(LM7001).

36

DATA

This

is

the

serial

data

output

terminal.Connect

to

the

terminal

DATA

of

PLL

IC

and

terminal

DI

of

analog

switches.

(LC7821/LC7823)

37

CLOCK

This

is

the

serial

clock

output

terminal.Connect

to

the

terminal

CI

of

PLL

IC

and

terminal

CL

of

analog

switches.

38

SEL

Connect

to

terminal

SEL

of

analog

switch(LC7821).

39

SYSTEM

IN

_|

This

is

the

input

terminal

for

system

code.

"H”

when

active.

40

SYSTEM

OUT

|

This

is

the

input

terminal

for

system

code.

"L”

when

active.

41

MONO

This

is

the

output

terminal

for

indication

of

MONO.

"L”

when

active.

42

AUTO

This

is

the

output

terminal

for

indication

of

AUTO.

"L”

when

active.

43

NRON

This

is

the

output

terminal

for

indication

of

NR

ON.

“L”

when

active.

44

NR

OFF

This

is

the

output

terminal

for

indication

of

NR

OFF.

“L”

when

active.

45

VREF

This

is

the

input

terminal

for

comparator

reference

voltage.

46

SIN

This

is

the

signal

strength

input

terminal.

47

vo

This

is

the

output

terminal

for

comparator

reference

voltage.

48

Vi

This

is

the

output

terminal

for

comparator

reference

voltage.

49

v2

This

is

the

output

terminal

for

comparator

reference

voltage.

50

RF

IN

This

is

the

input

terminal

for

control

of

AGC.

"H”

when

active.

31

VP.

Pull-down

resistor

connection

terminal

of

FIP

controller/driver.

Pin No.

Terminal

Description

52

Sa

53

Sb

54

Se

55

Sd

These

are

the

output

terminal

for

segment

signal.

56

Se

“H”

when

active.

57

Sf

58

Se

39

Sh

60

Si

61

Si

62

Sk

63

SI

64

VDD

This

is

the

divice

power

Source

terminal.At

the

time

of

operation,the

supply

is

5V.The

internal

data

memory(RAM)

is

maintained

by

means

of

the

super

capacitor.

FM5OK

(FM

band

setting)

FM50K

Region

Frequency

range

Channel

space

Reference

frequency

IF

frequency

1

Europer

87.50

~108.00MHz

|

50kHz 25kHz

10.7MHz

0

USA.

87.9

~107.9MHz

200kHz

25kHz

10.7MHz

AMS

AM9K

Region

Frequency

range

Channel

space

Reference

frequency

IF

frequency

1

Europer

522

~

1611

kHz

|

9kHz

450kHz

0

USA.

530

~

1620

kHz

10kHz

450kHz

Connection

of

fluorescent

tube

and

microprocessor

ANODE

CONNECTION

8G(D8) 7G(D7)

6G(D6)

|

5G~D5)

|

4G(p4)

|

3G(D3)

|

2G(pD2)

|

16(D1)

a

SLEEP

==

a

a a

a

b

cb

DIRECT

b

bd

b b

b

¢

MEMORY

c ©

¢

c

©

¢

d

11-20

d

a

4

ad

4

e

110

FM

|

FM

MUTE

e e

e

e e

e

¢

|

[aupio

mure

STEREO

f f t f

f

8

=

AM

& g

g

8 g &

h

|

[remonrror

OFF

= =

=.

h

=

h

i

-

ON

i

=

i

= -

i

j

-

MIN

j

2

= =

FS

j

k

-

kHz

- -

k

-

ke

é

-

MHZ,

- =

DP

- =

cH

m

PRESET

STATION

- -

- - -

-

=

nS

Eger

2

iz

= 5 &

5

=

° -

SIONALSTRENGTH.

- -

-

P

- = x

=

es

= =

uPA81C

(BUFFER)

6

15

14 13

12

n

10

g

q

ee

RBI

~

RBZ

oe

ars

ae

-

7

2

3

5

6

7

RBI:

20K

RI:

20KA

RBZ!

2A

AZ

:

100K

7—BT-95GK

(FLUORESCENT

TUBE)

8G

|

‘SIGNAL

STRENGTH

SIGNAL

FREQUENCY7INPUT

SELECTOR

PRESET

STATION

[FM

MUTE]

[ON

(OFF[STEREO

SLEEP)[CD_DIRECT

)[AUDIO

MUTE!

1-2

MONITOR

MEMORY

][1-10]

[11-20]

z

Z

z

9

fad

iad

fa

fan

es

Zz

.

ZN

a

OX

ep

7

oP,

7

I I T

I

T T

7

a

5G

4s

36 26

76

IG

(=.

oT

DATA

composition

Switch

BS

oR!

Bg

les

AO}

A1/A2/

a3}sw)

2}

3}

4]

5]6/7)8

ee

LTH]

HI)

HI

4

Bt

Pee

ADDRESS

2

a

ey

a8

7

!

ee

0

5

ne

§

a

3%

©

RCOM2

<<a

[a

a

ja ja

4

|

FF

oO lo

6

lo

a

Bt

ee

Be

tr

The

source

becomes

ON

when

the

bit

of

switch

becomes

©

RCOMS

high

—pe—leer

,

!

RCOM4-

|

ot

des

No.

|

Terminal

Description

No.

|

Terminal

Description

11)

|

TAPE2

REC

16

|

Vss

Ground

terminal.

2(L2)

|

TAPE

2PB

;

3

LCOM1

17

s

Selector

terminal.

4(L3)

|

CD-D

f

oe

18

|

RES

Reset

terminal.

When

power

is

turned

5(L4)

|

CD-D

Input/output

terminals

of

audio

signal

ON,

the

condition

of

the

analog

switch

6

LCOM

2

obleft

charac]:

,

is

not

determined,

but

when

this

ter-

705)

|

CD-D

Control

to

the

inside

analog

switch

at

final

la

"L"

all

abalog

switches

ae

8a

|

CD

the

serial

data.

See.

9

,

Lcom

3

19

Power

supply

terminal.

(+15V)

1047)

|

DD

_

1

LCOM4

20

aR

[12

VEE

Negative

power

supply

terminal.

}

22

(-15V)

23

(R6)

inpuiioutoearainal

skeudieeandl

13

CE

Chip

enable

terminal.

Connect

to

SEL

|)

24

(RS)

mput/autput

terminals

of

sudio'signal

terminal

of

LC6568H-3643,

25

Of

sieht

channel.

:

26

(R4)

Control

to

the

inside

analog

switch

at

14

|

DL

Serial

data

input

terminal.

Connect

to

|)

95

(R3)

|

the

serial

data.

DATA

terminal

of

LC6868H-3643.

3

i

5

[cL

Serial

clock

input

terminal.

Connect

to

||

29

(R2)

CLOCK

terminal

of

LC6868H-3643.

|

30

(R1)

|

TAPE

2

REC

ne

ADJUSTMENT

PROCEDURES

Preparation

©

Standard

knob

position

@

Input

TAPE

MONITOR

.

SOURCE

FM

mono:

1kHz,

75kHz

devi.,

60dB/uV

VOLUME

...

ers

.

Maximum

FM

stereo:

1kHz,

L+R

67.5kHz

devi.:

Pilot

signal

19kHz

BASS/TREBLE/BALANCE

....

-..,.

Center

7

SkHz

devi.

VCR:2

MODE:

30-434

ya.

Rote

haw

wt

STEREO

AM:

400Hz,

30%

mod.,

Set.

©

Output

.

OFF

Connect

the

non-inductive

type

resistor

of

8

ohms

to

the

DYNAMIC

BASS

EXPANDER

....

..

OFF

speaker

terminal

A

of

left

and

right

channels

unless

other-

STEREO

IMAGE

EXPANDER

....

..

OFF

wise

noted.

SELECTIVE

TONE

CONTROL

...

.

OFF

Amplifier

section

1.

Idling

current

adjustment

Connect

the

DC

voltmeter

to

the

terminals

[1D

and

VCT

on

the

power

amplifier

pc

board.

Adjust

the

semi-fixed

resistors

R533

and

R534

so

that

the

indication

of

voltmeter

is

7.5

+

1.5mV.

Notes:

VOLUME

............

Maximum,

Open

load,

Adjust

after

switching

on

for

5

minutes.

Power

amplifier

pc

board

|

section

Connection

Stereo

modu-

|

Turning

:

-

7

Item

Step

|

otinstrument

Ierortinpel

|

slal

aey

Output

indicator

Adjustment

|

Adjust

for

Remarks

unr

u

DC

voltmeter

101

OV

=

20mV

Mode

switsh:

MONO

Le

T

|

otstoarion

il

Bone

Repeat

the

steps

1

pve

jawarzen

1F

2

|

Fig.1

kHz,

75kHz

devi.

99.1MHz

|

AC

voltmeter

a

ii

Maximum

and 3

until

no

Tea

I

tent

ens

further

adjustment

ac

2)

Distortion

analyzer

1102

Minimum

is

necessary

|

eee

‘VOUTMETER

=

Fe

1

r7zapeazdsy

— |

ER:

Ake

Light

on

Tes

Stereo

Exh

modulation

;

Mode

switch:

Hwa

couNrEn

sister

ioe

Fig.

3

99.1MHz

|

Stereo

indicator

R101

STEREO

GuNtRATOR

z

2

16.24BE

(114B)

Light

off

‘Use

the

high

impedance

probe,

(10:1)

Ext.

modulation

|

7.5kHz

devi.

Fer

EXT.

MODE

OUT,

vco

Fig.

2

kHz,

7SkHz

devi.

99.1MHz

|

Frequency

counter

R201

19kHz

+

LOHz

rete

ok

3

{

unit

oT]

pisroarion

ant

Re

es

sek

TERMINAL,

tum

more

Fig.

3

Lor

Reh.

LkHz

|

99.1MHz

|

Distortion

analyzer

on

Minimum

“

:

ac

Sear

font

nd

whan

#18"

wer

[SSemvereat

|

foutscrcor

Sites

1

Re

osname

LR

AC

tomate

a

Minimum

Mace

cal

gti

[er

Ext.

modulation

Leh.

AC

voltmeter

Minimum

seen

penton

TPS

-blend

level

Fig.

3

35.2dBF

(30dB)

99.1MHz

|

Hi-blend

indicator

R102

Light

off

Ae

kHz,

7SkHz

devi.

f

section

Reference

specifications

2)

~——————

FM

Tuned

voltage

87.9MHz

2.0

+0.5V

=

5

tep

AMSG.

Adjust

for

107.9MHz

7.7

+0.5V

1

output

frequency

(120

model)

87.5MHz

2.0

+0.5V

c

S30kHz

Tuoo!

OMHz

7.7

+0.5V

1

[522kH42]

13V

201

ios:

one

Sassy

2

<S31kH2

‘

1s!

S00KH2(603KH2)

coo

yr,

corgen

-

:

ae

oe

Gan

2

|

400H230%

mod.

|

ostttay

Maximum

.

604B/m

AM

Tuned

voltage

S30kHz

13+05V

1620kHz

8.0+05V

1000kHz

(120V

model)

(999kH2)

1000kHz

zi

S22kHz

13+

05V

iis

3

|

40082

30%

mod.

|

(999KHz)

Maxine

1611kHz

8.02

05V

[e]uio

604B/m

(Other

models)

oe

100k

RIO

«|

samearatove

|

1008

Liston

oo

@®

12

Ris!

Garo

vat

IERATOR

‘606m

=|

aN

‘oor

ant

[J+

10kHz

step

model

(>:

Wmodet

(2

9kHz

step

model

FM/AM

tuner

and

selector

switch

pe

DISPLAY

PC

BOARD

PRINTED

CIRCUIT

BOARD-PARTS

LIST

DISPLAY

PC

BOARD(NADIS-3281-1/1A/1B)

CIRCUIT

NO.

U701

Q701

Q704

Qi02

Q705

Q703

Q706

D702-D715

D716,D717

D718,D720

D719

D720

D733-D735

D721,D723

D725,D727

D729-D731

D722,D724

D726,D728

D732

X701

PART

NO.

DESCRIPTION

ICs

24130001

GP1US01S

22240153

LC6568H

-3643-

22240150

LC6527C-3608

Transistors

2211255

or

2SC1815(GR)

or

2210746

2SC945A(P)

2211455

or

—

2SA1015(GR)

or

2210803

2SA733(P)

Fluorescent

tube

212054

7-BT-95GK

Lamp

2100644.

6.3V,0.25A

Diodes

223163

1$5133

223163

188133

<G/W>

224650822,

05AZ8.2Y,

224150822

or

HZ8.2EB2

or

224450822

MTZ8.2B

223163

1SS133

224150562

or

05AZ5.6Y

or

224650562

HZ5.6EB2

223163

18$133

L.E.Ds

225137CG,

SEL2413ECG,

225137DG

or

SEL2413EDG

or

224137DY

SEL2413EDY

225142

SEL2913K

225142

SEL2913K

225141

SEL2213C

Osc.

elements

3010099

CSA4.00MG,Ceramic

X702

3010119

Capacitors

C702

3020027

or

3000051

C704

354780109

C707,C715,

354782299

C708

354741009

Resistors

R710

49163473404

R734,R735

49163104404

Switches

S701-S724

25035548

S725

25065286

Relay

RL701

25065298

Holder

27190643A

TX-850

CSB-1000D,Ceramic

0.047F,5.5V

or

0.047F,5.5V

Super

1

wF50V

Elect.

0.22uF,50V

Elect.

10¢F

16V

Elect.

47kohm

x4,

1/10W,Network

100kohm

x4,

1/10W,Network

NPS-111-S510

NSS-22112,Band

<W>

NRL-1P1A-DC12-40

LED

SPEAKER

SWITCH

PC

BOARD(NASW-3278-1/1A)

CIRCUIT

NO,

PART

NO.

R549,R550

442520474

R551,R552

441623914

$502,S503

25035517

P503

25045187

25045139

DESCRIPTION

4.7ohm,1/2W,Metal

oxide

film

resistors

3900hm,1W,Metal

oxide

film

resis-

tors

NPS-~222-L479,Push

switch

HLJ-0541-01-010,Stereo

headphone

terminal

<D/W>

HLJ-0540-01-010,Stereo

headphone

terminal

<G>

PREAMPLIFIER

PC

BOARD(NAAF-3283-1/1A)

CIRCUIT

NO.

Q352

Q353

Q851

Q853

D351

D352,D353

C359,C360

C363,C364

C367,C368

€373,C374

C375-C378

C389

€390,C392

C393,C851

R371,R372

R379,R380

R451

S354

PART

NO.

ICs

222579

or

222570

222465.

Transistors

2212600

221281

Diodes

224650623

or

224150623

223163

Capacitors

354780229

354741009

352983396

354780229

354781099

354780229

354781099

354780339

Resistors

5104216

5104225

Switch

25035590

DESCRIPTION

NJM4560D

or

NJM4560DX_

NJM4558D.

DTAIL24ES.

DTCI4YS.

HZ6.2EB3

or

05AZ6.2Z

1SS133

2.2

wF,50V

Elect.

10uF.16V

Elect.

0.334F,50V,Non-polar

elect.

22

wF.S0V

Elect.

0.1

wF50V

Elect.

2.2

wF,50V

Elect.

0.1

wF,50V

Elect.

3.3

4F,50V,Elect.

N14RLCS0KC22Z,

Variable,Bass

NI4RLC50KC22Z,

Variable,Treble

N1IRGLC250KW22Z,

Variable,Bal-

ance

NPS-122-L552

SPEAKER

TERMINAL

PC

BOARD(NAETC-3279-1/1A)

CIRCUIT

NO.

P501,P502

PART

NO.

25060110

DESCRIPTION

NTM-4PDMN44,Speaker

termi-

nals

SPEAKER

SWITCH

PC

BOARD

NOTE:

«D>:

Only

120V

model

<G>:

Only

220V/240V

models

<W>:

Only

Worldwide

model

u

|

6

7

|

SCHEMATIC

DIAGRAM

-

TUNER

SECTION

—

-

120V

MODEL

—

708

7-87-95cK

ONKYO

CORPORATION

1

|

2

3

4

5

6

I

7

SCHEMATIC

DIAGRAM

-

AMPLIFIER

SECTION

—

-

120V

MODEL

—

EU

wow

were

PHONO

co

‘

nec

E

Thee

:

7

i

PLAY

Ho

secriaw

e

REC

TAPE-2

PLAY

earn

Bae

cee

voR

be

eae:

sea

2S

ete

=

a

ten

|

S12

i

tee

a

;

2

aS

pi

eet

et

ONKYO

CORPORATIO

PRINTED

CIRCUIT

BOARD-PARTS

LIST

FM/AM

TUNER

AND

SELECTOR

CIRCUIT

PC

BOARD(NAAR

-3276-1/1A/1B)

CIRCUIT

NO.

TUOOL

Quod

Q201

Q301

Q302

Q7ai

Qu01

Q102

Qu03

Q105

Q106,Q207

Q202-Q204

Q205,Q206

Q303,Q304

Q451,Q452

Q501,Q502

Q503-Q506.

Q507-Q510

Q511,Q512

Q313,Q514

Q732

Q733,Q801

Q802,Q892

Q881,Q891

Q903

Q951,Q971

Q972

Q952

Q953

D101,D102

D801-D804

D881

D891

D91

D902,D903.

D904

D905

DgO8

D951

D971,D972

L101

L102

L152

PART

NO.

Front

end

240070

2

8

22240079

22240158

22240090

Transistors

22121

2211354

223132

223163

224651001

or

224151001

223163

223880

or

223896

224153001

or

224653001

223163

224650623

or

224150623

Transformers

89

233390,

232139

DESCRIPTION

TFFGIUL6A

<D>

TFFG3E

<G/W>

LA1266

#PCI1I6IC3

LC7821

LC7823

LM7001

2SK24(GR)

<G/W>

2SC1923(0)

<G/W>

2SC1815(GR)

or

2SC945A(P)

2SA1015(GR)

2SK246(GR)

2SD653(E)

or

2SD1468(R)

2SC1815(GR)

or

2SCH5A(P)

2SC2878(A)

or

25C2878(B)

2SC225KO-001)

or

28C2259(0-002)

2SA1015(GR)

2$C€2229(0)

or

2S8C2229(Y)

K108(D)

2SA1015(GR)

2SA949(0)

or

2SA9IHY)

2SC1815(GR)

or

2SCH45A(P)

2SA965(0)

or

2SA965(Y)

2SA992(F)

or

2SA992(E)

1K60

1$$133

HZ10EB1

or

035AZ10X

1$$133

KBU4D

05ZA13X

or

HZ13EB1

WLO1

or

WOIRL

GP101N4003

or

1N4003F

05AZ30X

or

HZ30EBL

1SS133

HZ6.2EB3

or

05AZ6.2Z

NFIF-

4066

NFIF-4067

NMIF-4062

CIRCUIT

NO.

L103

L104

1201,L202

L801

Lisl

‘X101,X102

‘X101-X103

X11

X152

‘X731

COOL

C105

C106

C110

cll

chié

C151

C204

€207,C208

€209,C210

C910,C911

CI2

CAT

C918

C919

Col,

Cc

R11

R102

R151

R201

R202

R339,R340

R529,R530

R531,R532

PART

NO.

Coils

233383

233105

233355A,

231081

or

233031

RF

block

232148

DESCRIPTION

NMC-6070

<G/W>

NCH~-1005

NMC-4059

NCH-2129

or

NMC-9-1

NMRF-7050,

Ceramic

filters

3010071

3010137

3010123

3010076

Xtal

3010073

Capacitors

354741009

354742209

354784799

354741019

354780109

354780229

354780339

354741009

354780479

354741009

354782299

354742209

354744719

354741009

354780229

354782299

354780109

354780339

370134714

354784799

354780339

354781009

354722219

354790479

354721019

354780479

354782299

354784799

354780229

354780109

335251039A

3504224

354761019

354744719

335251039A

354764709

354761019

354741009

354761019

5210064

5210062

49163105404

442522704

442529104

SFE10.7MA5

(RED)

<D>

SFE10.7MMK

<G/W>

SFZ450JL.

BFU450C

XTL-7.2M

10¢F.16V

Elect.

22

uF

,16V

Elect.

0.474

F

SOV

Elect.

100

wF16V

Elect.

1

wF50V

Elect.

2.2

wF.50V

Elect.

3.3

nF

SOV

Elect.

10uF16V

Elect.

4.7

xF

SOV

Elect.

104

F.16V

Elect.

0.22zF

SOV

Elect.

22

F

16V

Elect.

470

2

F,16V

Elect.

10xF

16V

Elect.

22

uF

SOV

Elect

F,50V

Elect.

1

#F50V

Elect.

33

wF.S0V

Elect

470pF_

+£5%,100V,APS

0.47pF,50V

Elect.

2.2

wFS0V

Elect.

33

pF,50V

Elect.

10uF,50V

Elect.

220

pF,

6.3V

Elect.

4.7

nF,

100V

Elect.

100

wF,

6.3V

Elect.

4.7

wF50V

Elect.

0.22yF

SOV

Elect.

0.47

uF

SOV

Elect.

22

wF\50V

Elect.

1

wF50V

Elect.

0.01

F

300V

Ceramic

10000

zF.56V

Elect.

100

#F,35V

Elect.

470

2F,16V

Elect

0.014

F.500V

Ceramic

47F

35V

Elect.

2200,

F

33V

Elect

100

2F,35V

Elect.

10¢F

16V

Elect

100

zF.35V

Elect.

NO6HR33KBD,Semi-fixed

NO6HR220KBD,Semi-fixed

NO6HRI1OKBD,Semi-fixed

NO6HR4.7KBD,Semi-fixed

N06HR220KBD,Semi-fixed

IMohm

*4,1/10W,Network

27ohm,1/2W,Metal

oxide

film

9lohm,1/2W,Metal

oxide

film

Onkyo TX-850 User manual

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