Technics QUARTZ SA-160 Manuale utente

ORDER

NO.

AD8807203C2

Service

Manual

CYUARTZ

Synthesizer

AM/FM

Stereo

Receiver

SPECIFICATIONS

(DIN

45

500)

@

AMPLIFIER

SECTION

DIN

power

output

1kHz

continuous

power

output

both

channels

driven

2x

40W

(8Q)

Total

harmonic

distortion

half

power

at

1kHz

0.07

%

(8Q)

Intermodulation

distortion

rated

power

at

60Hz:

7kHz=4:

1,

SMPTE,

8

0.5%

Power

bandwidth

both

channels

driven,

—3dB

10Hz~40kHz

(8Q)

Damping

factor

20

(89)

Input

sensitivity

and

impedance

PHONO

3mV/47kQ

CD,

VCR

1,

TAPE/VCR

2

200mV/22kQ

PHONO

maximum

input

voltage

(1kHz,

RMS)

150mV

SIN

rated

power

(80)

PHONO

68dB8

(IHF,

A:

71dB)

CD,

VCR

1,

TAPE/VCR

2

70d8

(IHF,

A:

85dB)

Frequency

response

PHONO

RIAA

standard

curve

+0.8dB

(30Hz~15kHz)

CD,

VCR

1,

TAPE/VCR

2

10Hz~70kHz

(+3dB)

5

band

graphic

equalizer

80Hz,

—-10dB~+10dB

250Hz,

—10dB~+10dB

1kHz,

—10dB~+10dB

4kHz,

~10dB~+10dB

Receiver

SA-160

Color

(K)...Black

Type

Area

Continental

Europe.

Holland.

Australia.

F.R.

Germany.

@

FM

TUNER

SECTION

Frequency

range

87.50~

108.00

MHz

Sensitivity

S/N

30dB

1.5uV

(75Q)

S/N

26dB

1.3uV

(75Q)

SIN

20dB

1.2uV

(75Q)

IHF

usable

sensitivity

1.5yV

(IHF

'58,

75Q)

IHF

46dB

stereo

quieting

sensitivity

22yuV/75Q0O

Total

harmonic

distortion

MONO

0.2%

STEREO

0.3%

SIN

MONO

60d8

(75dB,

IHF)

STEREO

58dB

(71dB,

IHF)

20Hz~15kHz,

+1dB~

—2dB

+400kHz,

65dB

Frequency

response

Alternate

channel

selectivity

Loudness

control

(volume

at

—30dB)

50Hz,

+9dB

Output

voltage

VCR

1,

TAPE/VCR

2

REC OUT

200mV

Channel

balance,

250

Hz~6,

300

Hz

+1dB

Channel

separation

55dB

:

Headphones

output

level

and

impedance

380

mV/330Q0

Load

impedance

MAIN

or

REMOTE

4Q~160

MAIN

and

REMOTE

8N~160

12.5kHz,

—-10dB~

+10dB

Technics

Capture

ratio

1.0dB

Image

rejection

at

98

MHz

40dB

IF

rejection

at

98

MHz

70dB

Spurious

response

rejection

at

98

MHz

70dB

AM

suppression

50dB

Stereo

separation

1kHz

40dB

10kHz

30dB

Carrier

leak

19kHz

—30dB

(—35dB,

IHF)

38kHz

—45dB

(—50dB,

IHF)

Channel

balance

(250

Hz~6,

300

Hz)

+1.5dB

Limiting

point

1.2uV

Bandwidth

IF

amplifier

180

kHz

FM

demodulator

1000

kHz

Antenna

terminals

75Q

(unbalanced)

Matsushita

Electric

Trading

Co.,

Ltd.

P.O.

Box

288,

Central

Osaka

Japan

SA-160

@

AM

TUNER

SECTION

Frequency

range

522~1611kHz

(9kHz-steps)

530~

1620

kHz

(10kHz-steps)

Power

supply

For

Australia

AC

50Hz/60Hz,

240V

For

continental

Europe

AC

50Hz/60Hz,

220V

Sensitivity

(S/N

20dB)

20uV,

330nV/m

Dimensions

(W

x

H

x

D)

430

x

97

x

288mm

Selectivity

at

999kHz

55dB

(16-15/16"

x

3-13/16”

x

11-3/16")

Image

rejection

at

999kHz

40dB

Weight

5.1kg

(11.2

Ib.)

IF

rejection

at

999kHz

55dB

Notes:

1.

Total

harmonic

distortion

is

measured

by

the

digital

spectrum

analyzer

(H.P.

3045

system).

M@

GENERAL

2.

Specifications

are

subject

to

change

without

notice.

Power

consumption

250W

Weight

and

dimensions

are

approximate.

i

CONTENTS

Page

ACCESSORIES

|

cis

seseceocesscnssostancecsuouetcatscvnceraessssecsssiecssassorcescoseers

2

BLOCK

DIAGRAM

..........:cccccsesesesscrscessssceenrsereessecusenserneees

13~15

CONNECTIONS

TO

EQUIPMENT..........sc:cscsccssssesserssessessseenseese

3

DESCRIPTION

OF

FLUORESCENT

DISPLAY

............s0000005

16

FRONT

PANEL

CONTROLS

AND

FUNCTIONG.................

4,5

PRINTED

CIRCUIT

BOARDG.................

DISASSEMBLY

INSTRUCTIONG.............ccccssssessesseres

.

6~8

WIRING

CONNECTION

DIAGRAN

..

PROTECTION

CIRCUITRY

.........:ccccsscsssssssvsrsesessessessvseeersnesencoes

8

SCHEMATIC

DIAGRAM

............0..s0000e

BEFORE

REPAIR

AND

ADJUSTMENT

..........cccsssscsssssssseseesee

8

CABINET

PARTS

LOCATION

...........::ccsssessesecssusresenerneers

MEASUREMENTS

AND

ADJUSTMENTS......

9,

10

REPLACEMENT

PARTS

LIST..........cscsssssseseessesseserseresnes

FUNCTION

OF

TERMINAL

...........c0ccssssssssssssssesenecsesseeseee

11,

12

RESISTORS

&

CAPACITORS.

............csccsesssssssssessseresesesee

TERMINAL

GUIDE

OF

IC’S,

TRANSISTORS

AND

DIO

DE

Si

isc

ivncceccstcnn

ete

Rites

cadesdecevascaagulnedvandacdavanin

12

Mi

ACCESSORIES

©

FM

indoor

antenna

(1)

(SSA269M

[XL])

(SPB1161)

(SSA270M

[EX,

EH,

EG))

¢

AM

loop

antenna

(1)

*

AM

antenna

holders

(2)

(SMA233-1M)

(SMA231M)

‘ie

fan

(B)

*

AC

power

supply

cord

(1)

(SFDACO5E03

{EX,

EH)])

(SJA173

[XL])

¢

Screws

(2)

S

8

(XTN3

+

10AFZ)

Note:

Configuration

of

AC

power

supply

cord

and

FM

indoor

antenna

differs

according

to

area.

Mi

CONNECTIONS

TO

EQUIPMENT

“PHONO”

terminals

Connect

a

turntable.

Note:

For

remote-contro!

operation,

be

sure

to

“VCR

1”

terminals

Connect

a

video

cassette

recorder

or

an

audio

tape

deck

etc.

(Refer

to

the

operat-

ing

instructions

of

VCR,

etc.)

Video

cassette

recorder

(option)

connect

the

ground

wire

correctly.

Turntable

(option)

ae

ers

EES

2

(GND)

(R)

(L)

Ground

wire

(option)

Stereo

connection

cable

(option)

(GND)

(R)

(L)

iN

CD

REC

PLAY

REC

PLAY

OUT

BACK

OUT

Stereo

connection

Stereo

connection

cable

(option)

(R)

(UY

(A)

AUDIO

OUT

(O(ROR)

TT

“ORO

A)

cables

(option)

AC

power

supply

cord

(included)

The

configuration

of

the

AC

outlet

and

AC

power

supply

cord

differs

according

to

area.

Stereo

connection

cables

(option)

This

unit

Lolo

[ol

o|

P11]

2]

eIeS|eS|cs

a

(RL)

LINE

OUT

b

ie

Compact

disc

player

(option)

“CD”

terminals

Connect

a

compact

disc

player.

LINE

IN

Tape

deck

(option)

“TAPE/VCR

2”

terminals

Connect

a

tape

deck

or

second

VCR.

“SPEAKERS”

terminals

mw

Load

impedance:

MAIN

and

REMOTE

:

8~169

MAIN

or

REMOTE

:

4~160

LINE

OUT

m@

“REMOTE”

terminals

For

connection

to

a

second

pair

of

speakers.

®

Twist

the

core

of

the

speaker

wires.

2

@

Lift

up

the

lever,

and

insert

the

core

until

it

Can

no

longer

be

seen.

@

Press

down

the

lever,

and

pull

the

cord

gently

to

be

sure

that

it

is

secure.

@

10

mm

+

*T

(13/32")

=

Twist

ack

Notes:

1.

To

prevent

damage

to

circuitry,

never

short-circuit

positive

(+)

and

negative

(—)

speaker

terminals.

2.

Be

sure

to

only

connect

positive

(+)

cords

to

positive

(+)

terminals,

and

negative

(—)

cords

to

negative

(—)

terminals.

3.

Connections

of

speaker

wires

should

be

made

before

connecting

the

AC

power

supply

cords.

SA-160

@

FRONT

PANEL

CONTROLS

AND

FUNCTIONS

Amplifier

section

Audio

input

selector/frequency

display

(audio

input

selector/frequency)

[4]

7}

[8]

[memory]

s

___

stereo

(2)

pal

a

FM

fi

Lt

[|

Mrz

tuner

matrix

{loudness}

[quartz

lock

Tape

indicator

(TAPE)

Loudness

indicator

(loudness)

Power

switch

(power

)

Equalizer

controls

(graphic

equalizer)

These

controls

are

used

to

adjust

the

levels

within

each

frequency

band.

The

levels

can

be

varied

continuously

over

a

range

of

+10

dB~

—

10

GB.

By

sliding

the

controls

at

each

of

the

indicated

frequencies

in

the

‘‘+”

direction,

the

frequencies

in

that

band

are

boosted,

and

by

sliding

them

in

the

“—"'

direction,

the

frequencies

in

that

band

are

attenuated.

Loudness

switch

(loudness)

Set

to

the

“on”

position

(The

loudness

indicator

will

it

luminate.)

when

listening

to

music

at

low

volume.

Auditory

perception

of

sound

in

the

low

frequency

range

falls

off

at

low

volume

but

when

the

switch

is

in

this

position,

this

deficiency

is

compensated

for,

so

that

the

full

impact

of

the

musical

per-

formance

can

be

enjoyed.

Balance

control

(balance)

Voiume-control

(volume)

Headphones

jack

(phones)

Speaker

selectors

(speakers)

These

selectors

are

used

to

switch

the

speaker

systems

ON

and

OFF.

Input

selectors

(input

selector)

These

selectors

are

used

to

select

the

sound

source

Tape-monitor

switch

(monitor)

Press

this

button

to

listen

to

tape.

No

other

sources

selected

by

the

input

selector

can

be

heard

while

the

to

be

heard,

such

as

a

disc,

radio

broadcast,

etc.

tape

indicator

is

illuminated.

To

listen

to

some

other

source,

press

this

The

selected

sound

is

shown

on

the

audio

input

button

once

again.

selector/frequency

display.

Tuner

section

Signal-strength

indicators

(signal

strength)

These

indicators

show

the

relative

strength

of

broadcast

signals

being

received

by

the

antenna.

The

best

condition

for

reception,

for

FM

and

AM,

is

when

the

indicators

illuminate

completely

to

the

top.

FM

stereo

indicator

(stereo)

This

indicator

automatically

illuminates

when

an

FM

stereo

broadcast

is

being

received.

Note:

it

will

not

illuminate

if

the

FM

mode

selector

is

pressed.

Memory

indicator

(memory)

This

indicator

illuminates

when

the

memory

button

is

pressed.

Quartz-lock

5

[memory]

=

indicator

Preset

channel

RED

Aes

(quartz

lock)

matrix

display

rm

LILA,

This

indicator

(tuner

matrix)

tuner

matrix

quartz

lock

—

illuminates

when

tuned

precisely

to

an

FM

or

AM

station.

FM

mode

selector

(FM

mode)

Memory

button

(memory)

This

unit

automatically

switches

to

the

stereo

mode

This

button

is

used

when

preset

memory

setting

of

the

when

a

stereo

broadcast

is

received.

Press

this

preset-tuning

buttons

is

made.

selector

to

listen

in

the

monaural

mode.

The

stereo

indicator

will

not

illuminate

in

the

monaural

mode.

Preset

tuning

buttons

(1

~0)

(24

channel

random

preset

tuning)

These

buttons

are

used

to

preset

FM

and

AM

broadcast

frequen-

cies

into

the

memory

of

this

unit,

and

are

also

pressed

to

select

the

desired

preset

frequencies.

Note:

The

buttons

marked

[3)

~

[6]

are

also

used

to

listen

to

radio

broad-

casts

arranged

in

convenient

groups.

Group

select

button

(select)

Assort-mode

select

button

(assort)

Change-mode

select

button

(change)

Memory-scan/group-search

button

(-M.

scan/—group

search)

Character-input/tuning

buttons

(character/tuning)

RT

s

scmtinedaiepsiliaullonpelaniaseand

phones,

Band

selectors

(band

selector)

FM

-AM

input

satector

FM:

Press

this

button

'to

listen

to

an

FM

broadcast.

AM:

Press

this

button

to

listen

to

an

AM

broadcast.

allocation:

When

the

AMbutton

is

pressed

for

about

4

seconds,

the

AM

frequency

step

will

change

to

10

kHz

per

step.

(This

step

is

set

to

9

kHz

before

shipment.)

In

order

to

return

to

the

original

frequency

indication,

press

this

button

for

about

4

seconds

again.

SA-160

@

DISASSEMBLY

INSTRUCTIONS

“ATTENTION

SERVICER”

Some

chassis

components

may

have

sharp

edges.

Be

careful

when

disassembling

and

servicing.

Ref.

No.

Ref.

No.

How

to

remove

the

power

SW

P.C.B.

and

aaah

gcc

speakers

SW/headphones

P.C.B.

1

e

Remove

the

5

screws

(Q~@).

Procedure

1-2-3

¢

How

to

remove

the

power

SW

P.C.B.

1.

Remove

the

power

SW

knob.

2.

Remove

the

1

screw

(@).

3.

Release

the

tab.

¢

How

to

remove

the

speakers

SW/headphones

P.C.B.

1.

Remove

the

1

screw

(@).

Cabinet

Screwdriver

acto

How

to

remove

the

front

panel

Procedure

1-2

1.

Remove

the

4

screws

(@~®).

2.

Remove

the

flat

cable

(J501).

How

to

remove

the

FL

P.C.B.

Procedure

1-2-4

1.

Remove

the

3

screws

(@~®).

2.

Release

the

tab.

(No

1

side)

White

line

(2)

pul

/

push

|

Connector

SA-160

Ref.No.

|

How

to

remove

the

tuner

P.C.B.

Ref.

No.

Ref.No.

|

How

toremove

the

volume

control

P.C.B.

|

Ref.

No.

;

and

main

P.C.B.

How

toremove

the

power

tc.

and

balance

control

P.C.B.

8

How

to

remove

the

key

switch

P.C.B.

Procedure

1.

Remove

the

12

screws

(9~@®).

1.

Unsolder

the

power

IC.

¢

How

to

remove

the

volume

control

P.C.B.

1.

Remove

the

2

screws

(@,

@)

and

remove

the

2.

Remove

the

tuner

P.C.B.

and

main

P.C.B.

2.

Remove

the

2

screws

(@,

@).

1.

Remove

the

volume

control

knob.

P.C.B.

holder.

2.

Remove

the

nut.

2.

Remove

the

2

screws

(@,

©).

3.

Release

the

Tabs.

¢

How

to

remove

the

balance

control

P.C.B.

1.

Remove

the

balance

control

knob.

2.

Remove

the

2

screws

(@,

@).

Volume

control

P.C.B.

Unsolder

the

power

IC

Balance

control

holder

Note:

When

mounting

the

power

IC,

apply

silicon

terminal

compound

(SZZOL15)

to

the

rear

of

the

power

IC.

Balance

Volume

control

knob

control

knob

How

to

check

the

main

P.C.B.

1.

Remove

the

4

screws

(@~®)

in

above

figure.

2.

Remove

the

9

screws

(@~@).

3.

Remove

the

bottom

chassis

in

the

direction

of

the

arrow

(Q).

Mi

PROTECTION

CIRCUITRY

The

protection

circuitry

may

have

operated

if

either

of

the

following

conditions

is

noticed:

If

this

occurs,

follow

the

procedure

outlines

below:

1.

Turn

off

the

power.

¢

No

sound

is

heard

when

the

power

is

turned

on.

e

Sound

stops

during

a

performance.

The

function

of

this

circuitry

is

to

prevent

circuitry

damage

if,

for

example,

the

positive

and

negative

speaker

connection

wires

are

“shorted”,

or

if

speaker

systems

with

an

impedance

less

than

the

indicated

rated

impedance

of

the

amplifier

are

used.

2.

Determine

the

cause

of

the

problem

and

correct

it.

3.

Turn

on

the

power

once

again

after

one

minute.

Note:

When

the

protection

circuitry

functions,

the

unit

will

not

operate

unless

the

power

is

first

turned

off

and

then

on

again.

M@

BEFORE

REPAIR

AND

ADJUSTMENT

1.

Turn

off

the

power,

discharge

both

power

supply

2.

After

completion

of

repair,

slowly

apply

the

primary

capacitors

(C701,

C702

4700yF)

through

a

109

5W

voltage

by

using

a

variac

to

avoid

over

current.

resistor

to

ground.

Do

not

short

between

C701

and

Current

consumption

at

50Hz/60Hz

in

no

signal

C702.

It

may

damage

the

capacitors.

mode

should

by

shown

with

respect

to

supply

voltage

220V/240V.

Power

supply

voltage

Bottom

chassis

50/60

Hz

120~320mA

|

100~300mA

Mi

MEASUREMENTS

AND

ADJUSTMENTS

mFM

Control

positions

and

equipment

used

¢

FM

signal

generator

(FM-SG).

Stereo

modulator

*

Distortion

analyser

¢

Oscilloscope

eAC

and

DC

electronic

voitmeter

(EVM)

e

Frequency

counter

¢Choke

coil

(100yH)

¢

Resistor

(100

kQ)

Note:

For

2201,

Z202,

L321,

L322

and

L324,

adjusted

parts

are

supplied.

So,

do

not

turn

the

cores

of

these

parts.

FM

MONO

DISTORTION

ADJUSTMENT

1.

Test

equipment

connection

is

shown

in

figure.

2.

Set

the

unit

to

“FM”

position.

3.

Set

the

radio

frequency

display

and

signal

generator

to

100.10

MHz.

4.

Adjust

T201

core

so

that

voltage

measured

in

signal

mode

is

OmV

(0+20mV)

in

300mV

range.

}.

Adjust

T202

so

that

the

distortion

factor

of

Lch

is

minimized.

.

Repeat

steps

4

and

5

a

few

times.

.

Make

sure

that

the

distortion

factors

of

Lch

and

Rch

are

nearly

the

same

with

each

other

to

minimum.

Note:

The

adjusting

screwdriver

used

should

be

made

of

resin.

MPX

VCO

ADJUSTMENT

.

Test

equipment

connection

is

shown

in

figure.

.

Set

the

unit

to

“FM

auto”

position.

.

Set

the

radio

frequency

display

and

signal

generator

to

100.10MHz.

.

Adjust

VR301

for

19.00

+0.03kHz

on

frequency

counter

reading.

%

USING

ALTERNATE

SYSTEM

1.

Apply

stereo

signa!

from

generator

or

receive

the

stereo

broadcast.

‘2.

Adjust

VR301

until

stereo

indicator

lights

up.

Cement

arm

of

VR301

as

shown

in

figure.

FM

STEREO

SEPARATION

ADJUSTMENT

(For

[EG]

area.)

1.Test

equipment

connection

is

shown

in

figure.

2.Set

the

unit

to

"FM”

mode.

3.Set

the

radio

frequency

display

and

signal

generator

to

100.10MHz.

4.Adjust

VR302

so

that

the

R-CH

output

is

minimized

when

stereo

modulator

is

in

“L”(L-CH

modulation)

mode.

FM

SIGNAL

GENERATOR

CONDITION

Modulation

frequency

1kHz

(MONO)

Output

level

FM

SIGNAL

GENERATOR

CONDITION

Modulation

0%

FREQUENCY

FM

ANTENNA

COUNTER

TERMINAL

:

Stereo

ON

position

®-

©)

-

©):

Stereo

OFF

position

-@

{indicator

lighting)

©

:

Adjust

point

of

Pilot

circuit

FM

SIGNAL

GENERATOR

CONDITION

Modulation

Stereo

“L”

mode

or

“R”

mode

‘90%,

Pilot

10%

Modulation

frequency

1kHz

(Pilot

19kHz)

Output

level

LPF

(fo=

T5kHz~

19kHz)

SA-160

FM

STEREO

DISTORTION

ADJUSTMENT

(For

[EG]

area.)

FM

SIGNAL

GENERATOR

CONDITION

Modulation

Stereo

“L’’

mode

or

“R”

mode

100%

1.

Test

equipment

connection

is

shown

in

figure.

2.

Set

the

unit

to

“FM”

mode.

3.Set

the

radio

frequency

display

and

signal

generator

to

100.10

MHz.

4.

Adjust

L1so

that

the

distortion

factor

of

L-CH

is

minimized.

5.

Make

sure

that

the

distortion

factors

of

L-CH

and

R-CH

are

nearly

the

same

with

each

other

to

minimum.

Modulation

frequency

Output

level

Notes:

1.

The

adjusting

screwdriver

used

should

be

made

of

resin.

2.L1

should

be

rotated

no

more

1/4

turn

(90

deg.)

on

either

side.

Stereo

modulator

Adjust

within

+90°

Output

mode...

Lor

R

e

Adjustment

points

AM

ANT

FM

ANT

FM

offset

coil

FM

MONO

DISTORTION

coil

FM

STEREO

SEPARATION

Adj.

MPX

VCO

Adj.

SA-160

Mi

FUNCTION

OF

TERMINAL

e

10901

(LC6554H3682):

microcomputer

DESCRIPTION

OF

TERMINAL

Segment

signal

output

Key

return

signal

input

—

-}

STAND

BY

Power

supply

terminal

OFF

Power

ON/OFF

input

1

STEREO

Stereo

signal

input

SD

signal

input

=

No

>=

20-2

N

a

NO

°o

EE

ae

<

1/0

Deck

control

terminal

=a]

(oe)

4

RELAY

Relay

control

output

:

N

Not

connected

Auto/mono

changeover

terminal

—

fo]

Muting

control

output

Attenuator

control

output

AFM

AF

signal

muting

control

output

=

ie}

Ground

terminal

vU

Vss

Ground

terminal

24

OSC1

Oscillator

terminal

OSC2

Oscillator

terminal

nD

Reset

signal

input

PFO/D1

Serial

data

output

terminal

27

PF1/CK

Clock

signal

terminal

for

serial

data

PF2/CE

Chip

enable

terminal

PF3/INT

Remote

control

input

30

Ground

terminal

[e%)

prs

le

32

Cc

Ground

terminal

n +

Control

signal

terminal

for

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(TC9163N)

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i?)

DESCRIPTION

OF

TERMINAL

Not

connected

hy

gees

|

LOUDNESS

ro.

Loudness

control

output

PJO

(R)

PJ1

(F)

iy

ae

Ne

We

ie

Power

supply

terminal

(negative

voltage)

44

$2

J

$12

Volume

motor

drive

output

Segment

signal

output

LC6554H3682

(64

PIN)

28J40CD

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MA167,

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28D1762

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MTZ6R8B,

MA4056M,

MA4110M,

MTZ15BT77,

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Technics QUARTZ SA-160 Manuale utente

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