Panasonic SG-5090 Manuale utente

Questo manuale è adatto per i seguenti modelli

1

Indice

Altri manuali Panasonic Radio

Panasonic

Panasonic RF-D100BT Manuale utente

Panasonic

Panasonic RF-NA20R Manuale utente

Panasonic

Panasonic SE-5508 Manuale utente

Panasonic

Panasonic RF-U350 Manuale utente

Panasonic

Panasonic RF-D10EG Manuale utente

Panasonic

Panasonic RF-D1 Manuale utente

Panasonic

Panasonic TOYOTA CQ-MS7920A Manuale utente

Panasonic

Panasonic RF-4800 Manuale utente

Panasonic

Panasonic RF-2800LBS Manuale

Panasonic

Panasonic RF-ND200R Manuale utente

Panasonic

Panasonic RC-800 Manuale utente

Panasonic

Panasonic RF-B600 Manuale utente

Panasonic

Panasonic RX-M40 Manuale utente

Panasonic

Panasonic RF-D10 Manuale utente

Panasonic

Panasonic RF-521 Manuale utente

Panasonic

Panasonic RC-D8 Manuale utente

Panasonic

Panasonic RF-3100 Manuale utente

Panasonic

Panasonic RF-D20BT Manuale utente

Panasonic

Panasonic TBB 120335 Manuale utente

Panasonic

Panasonic RF-2400 Manuale utente

Panasonic

Panasonic RF-SW70 Manuale utente

Panasonic

Panasonic RF-D20U Manuale utente

Panasonic

Panasonic RF-D10 Manuale utente

Panasonic

Panasonic RF-B65 Foglio di istruzioni

Manuali Radio popolari di altre marche

EisSound

EisSound KBSound iSelect Manuale utente

Midland

Midland 1001LWX Manuale utente

Konig

Konig HAV-SR41 Manuale utente

Roberts

Roberts exprssion Manuale utente

VDigi

VDigi DD3.0 Manuale utente

Radio Shack

Radio Shack 21-1863 Manuale utente

Roberts

Roberts Stream 207 Manuale utente

Sony

Sony Walkman SRF-M97 Manuale utente

Stanley

Stanley FatMax FMC770 Manuale utente

auna

auna DAB-Radio 10026947 Manuale utente

SOUNDMASTER

SOUNDMASTER UR190 Manuale utente

HYT

HYT TC-320 Manuale utente

auna multimedia

auna multimedia Yellowstone 10026851 Manuale utente

B-Tech

B-Tech GMRS-V2 Manuale utente

Weierwei

Weierwei VEV-V8 Manuale utente

SOUNDMASTER

SOUNDMASTER DAB750 Manuale utente

Telefunken

Telefunken TF-1505 Manuale utente

Makita

Makita LXRM03 Manuale utente

ORDER

NO.

TSD-7808-321

Service

Manual

Compact

Stereo

FM/AM/FM

STEREO

RADIO

WITH

FM

“SENSOR

TOUCH”

PRESET TUNING

SYSTEM,

G

us

5O90/

DOLBY*

NOISE

REDUCTION

SYSTEM,

(M)

CASSETTE

TAPE

DECK

AND

RECORD

PLAYER

Specifications

[GERMANY

|]

AMPLIFIER

SECTION

Power

Output.

|

eS

_—

|

fe}

|

fle)

oO

One

Channe!

Driven

One

rel

D

)

RMS

2x

30W

HD

1%,

4

ohms)

|

(T

Both

Channel.

Driven.

10

Hz

I

1

=

Hz

.

200

mV,

60k

IN:

380

mV

TAPE

DECK

SECTION

1

2

L

8

uv

45d

:

45d

f

SW:

20d

Cc

70

RECORD

PLAYER

SECTION

44.

Player

System

75

Turnta

:

(

04

Turntab

ds

3

and

POWER

CONSUMPTION

.....220W

POWER

SUPPLY

raiceae

ONS

soe

H

x

D)

>

for

furt

subject

to

change

without

n

National

Panaso

Matsushita

Electric

Trading

Co.,

Ltd.

Box

288,

Cent

aka

Japan

n

woah

2

c

LOCATION

OF

C

~~

L

ea

|

(w)/060S-9S

—

SG-5090/(m)

DISASSEMBLY

INSTRUCTIONS

@

To

Remove

Dust

Cover

@

To

Remove

Record

Player

Record

Player

©

To

Remove

Knobs

Dust

Cover

®

To

Remove

Screws

Vas

Remove

o—

Remove

gor

m=

To

Remove

Cabinet

........0....0.00

ee

Refer

to

@

~

@.

®

To

Remove

Escutcheon.......................0.

Refer

to

@

~

©.

@

To

Remove

Tape

Deck......................0....

Refer

to

@

~

©.

SERVICING

AID

@

To

Remove

Remote

Wire

Assembly

Lift

remote

wire

assembly

upward

by

pushing

the

lower

portion

of

plastic

hook

with

a

suitable

screwdriver.

Rempve

@

Note

for

Handling

of

Remote

Wire

Assembly

When

servicing

remote

wire

assembly,

be

sure

to

hold

it

gently.

Do

not

bend

sharply.

Before

lifting

the

cassette

deck

(or

circuit

board),

be

sure

to

remove

remote

wire

assembly

carefully

to

prevent

it

from

being

damaged.

Do

Not

Bend

peice

———

eee

Good

Good

ee

No

Good

No

Good

SG-5090/(m)

ALIGNMENT

INSTRUCTIONS

(RADIO)—1

2

AM

Alignment

Control

Positions:

FM

DUMMY

ANTENNA

wae

Tey,

BR

ON.

SOO

OND

OPO

Volume

Control

Treble

Control

Bass

Control

Balance

Control

Function

Selector...

Power

Switch

FM

Preset....

Loudness

High

Filter

Selector...

Muting

Switch

.

FM

Preset

Volume

(VR101~

Maximum

(AM-IF

and

RF,

FM-RF);

Minimum

(FM-IF)

LW,

MW,

SW,

FM

MONO

and

FM

AUTO

ON

MANUAL,

P1,

P2,

P3, P4,

P5

and

P6.

OF

them

fully

counterclockwise.

Preset

Volume

(VR108~VR112)

reading.

(or

use

42

dummy

load

resistors.)

F

VR106)...

Turn

Turn

set

to

the

center

point.

.

Output

of

signal

generator

should

be

no

higher

than

necessary

to

obtain

output

.

Make

certain

that

speaker

system

is

connected

to

the

receiver

when

aligning.

To

SSG

(Imp.

75Q)

To

Receiver

SW

DUMMY

ANTENNA

T

302

20uH

125pF

To

SSG

3202

400pF

o

Receiver

if

SIGNAL

GENERATOR

or

SWEEP

GENERATOR

CONNECTION

FREQUENCY

RADIO

DIAL

SETTING

INDICATOR

(VTVM

or

SCOPE)

5

ADJUST

REMARKS

AM-IF

AND

RF

ALIGNMENT

Fashion

loop

of

several

turns

of

wire

and

radiate

signal

into

loop

of

receiver.

455

kHz

30%

Mod.

with

400

Hz

Point

of

non-

interference

(on/about

600

kHz)

145

kHz

30%

Mod.

with

400

Hz

350

kHz

30%

Mod.

with

400

Hz

145

kHz

(15.44

mm)

350

kHz

(201.13

mm)

550

kHz

30%

Mod.

with

400

Hz

550

kHz

(21.83

mm)

1500

kHz

30%

Mod.

with

400

Hz

1500

kHz

(196.72

mm)

Connect

to

EXT.

antenna

and

ground

through

SW

Dummy

antenna.

SG-5090/(m)

5.9

MHz

30%

Mod.

with

400

Hz

5.9

MHz

(15.64

mm)

18

MHz

30%

Mod.

with

400

Hz

18

MHz

(172.30

mm)

Output

meter

across

speaker

jack

(L).

(Imp.

42)

T201

(AM

1st

IFT)

T202

(AM

CFT)

T203

(AM

DET)

Adjust

for

maximum

output.

L202

(LW

ANT

Coil)

L205

(LW

OSC

Coil)

CT202

(LW

ANT

Trimmer)

CT205

(LW

OSC

Trimmer)

Adjust

for

maximum

output

by

sliding

coil

L202

along

ferrite

core.

Adjust

for

maximum

output.

Honest

steps

(2)

and

(3).

L201

(MW

ANT

Coil)

L204

(MW

OSC

Coil)

Adjust

for

maximum

output

by

sliding

coil

L201

along

ferrite

core.

CT201

(MW

ANT

T:

immer)

CT204

(MW

OSC

Trimmer)

Adjust

for

maximum

output.

Repeat

steps

(4)

and

(5).

L203

(SW

ANT

Coil)

L206

(SW

OSC

Coil)

Adjust

for

maximum

output.

C7203

(SW

ANT

Trimmer)

CT206

(SW

OSC

Trimmer)

Adjust

for

maximum

output.

Repeat

steps

(6)

and

(7).

NTS

(RADIO)

ALIGNMENT

POi

=

=)

D °

we

O

2]

neter

AND

RF

ALIGNMENT

FM-IF

Re

IENT

INSTRUCTIONS

(RADIO)—2

iba

aligned.

Do

not

touch

it

he

drift

of

is

pre-

ignment

M

fe:

When

aligning

separation,

disconnect

frequency

counter.

=<

i.

|

ALIGNMENT

INSTRUCTIONS

(TAPE

DECK)

®

Tape

Deck

Alignment

t

|

CGontrol

Po

i

i

1

j

Cc

:

Kae

Seg

ATARI

RE

_

VTVM

CONN

|

he)

|

PA

Aine

aera

eon

|

Positive

|

I

ss

i

efeat

sw

|

defeat

swi

|

i

|

Sn

SER

Eee

a

T

|

i

5

|

5

[vests

|

|

|

a

sea

betic

|

|

i

6

|

|

|

|

*

Connect

TP801

to

i

|

|

+

Turn

Dolby

switch

to

7

we

———|

to

REC/PLAY

term

|

|

-

yea

|

at

+3

dB

(OQmark

|

|

eae

j

YRA08”

|

and

VR408

for

0.6

mV

Notes:

i.

Do

not

touch

R/P

Head

and

Erase

Head when

aligning.

|

|

2.

L801

and

L802

are

pre-aligned.

Do

not

touch

them.

i

3.

MTT-150

is

DOLBY

LEVEL

calibration

tape.

i

acesrrsnseenemneninnentansneumntonnsestettnnenaensarenen

ents

Pere

ne

uncnenso

sescmnmannorcn

rte

nnn

ements

__t

RECORD/PLAYBACK

HEAD

AZIMUTH

ADJUSTMENT

Playback

a

Standard

Alignment

Tap

e

and

turn

Azimuth

Adjusting

Screw

for

maximum

loudn

ess.

es)

«

Test

Tape

(6.3

kHz)

VTT-652

orEquivailent

$G-5090\m)

[7]

SG-5090/(m)

MECHANICAL

ADJUSTMENT

OF

CASSETTE

TAPE

DECK

PRESSURE

ROLLER

ADJUSTMENT

1.

Switch

set

to

PLAY.

(Do

not

insert

cassette.)

2.

Hook

gauge

to

arm

of

pressure

roller.

Pressure

Roller

Capstan

.

Pull

pressure

roller

away

from

the

capstan

in

the

direction

of

arrow

1

with

spring

gauge

and

slowly

permit

the

pressure

roller

to

return

toward

capstan

inthe

direction

of

arrow

2.

.

Measure

tension

at

time

when

pressure

roller

makes

contact

with

capstan

(or

when

pressure

roller

starts

rotating.)

.

The

standard

tension

of

pressure

roller

should

be

250

~

380g.

.

If

pressure

is

not

within

these

limits;

Clean

the

rubber

roller

and

capstan

with

a

soft

cloth

moistened

with

alcohol

or

replace

pressure

spring.

TAKE-UP

TORQUE

ADJUSTMENT

f&ONM-

*

Test

Tape:

QZZSRK-CT

(Take-up

Torque

Meter)

.

Insert

test

tape.

.

Rewind

the

tape

to

its

starting

point.

.

Switch

set

to

PLAY.

.

Read

‘®”

mark

of

indicator

on

take-up

side.

Indicator

CASSETTE

TORQUE

METER

QZZSRK-CT

Torque

Scale

5.

Repeat

PLAY-STOP

several

times

and

read

the

average

tension.

6.

The

standard

take-up

tension

should

be

30

~

70

g.cm.

If

take-up

tension

is

not

within

these

limits;

a)

Clean

main

belt,

take-up

reel

and

all

parts

which

contact

them

with

a

cotton

swab

moistened

with

alcohol,

and/or

b)

Switch

set

to

“OFF”,

remove

main

belt

and

make

sure

that

take-up

reel

and

take-up

clutch

are

rotating

smoothly.

c)

Change

take-up

clutch

tension

by

turning

the

friction

spring

under

reel

table,

and/or

d)

Replace

take-up

clutch.

Friction

Spring

Take-up

Clutch

Assembly

MOTOR

PULLEY

ADJUSTMENT

When

replacing

the

motor,

adjust

the

clearance

between

motor

and

motor

pulley

as

in

figure

below.

$¢-5090/(m)

SERVICING

THE

RECORD

PLAYER

CARTRIDGE

REPLACEMENT

1.

Remove

the

headshell

fixing

nut

by

turning

it

clockwise

and

remove

headshell

from

pickup

arm.

2.

Remove

cartridge

from

headshell

by

removing

the

two

screws

and

disconnecting

the

lead

wires

from

cartridge.

3.

Using

the

two

nuts

attached,

mount

a

new

cartridge

onto

headshell

so

that

the

cartridge

is

perpen-

dicular

to

the

disc

surface.

4.

Install

headshell

to

pickup

arm.

Note:

Correct

stylus

position

can

be

obtained

by

relocating

the

cartridge.

fe

~

Screws

©

,

Stylus

Setting

Position

hes

is

FO

|

ie)

S)

——-

a

x

r

|

io

|

<a

Ye

Nuts

STYLUS

REPLACEMENT

1.

Lift

pickup

arm

to

a

position

that

will

make

the

stylus

accessible.

2.

Gently

remove

worn

stylus

and

replace

it

with

a

new

one.

STYLUS

PRESSURE

ADJUSTMENT

1.

Release

pickup

arm

from

its

seated

position.

Place

a

record

on

the

turntable.

Then,

balance

the

pickup

arm

by

turning

in

or

out

the

balance

weight

until

the

stylus

is

leveled

to

the

surface

of

the

record

(as

viewed

from

the

turntable

unit

side).

SG-5090/m)

2.

Set

the

stylus

pressure

dial

to

“0”,

and

since

the

specified

stylus

pressure

of

the

cartridge

is

2.0

grams,

set

the

balance

weight

dial

to

“2”

by

turning

the

weight

counterclockwise

(as

viewed

from

the

front

panel

side).

Tone

Arm

Ass'y

—-———-Balance

Weight

LUBRICATION

The

record

player

has

been

thoroughly

lubricated

at

the

factory

and

under

normal

use

should

not

be

required

additional

lubrication.

When

replacing

some

parts,

however,

it

may

be

necessary

to

lubricate

the

parts

as

specified.

Note:

Do

not

allow

grease

to

touch

motor

pulley,

pelt

and

turntable.

Grease

Grease

DOLBY

NOISE

REDUCTION

SYSTEM—1

GENERAL

DESCRIPTION

The

Dolby

B-Type

Noise

Reduction

System

is

used

in

this

equipment.

It

reduces

the

level

of

background

noise,

normally

introduced

during

tape

recordings

without

changing

the

frequency

response

of

the

audio

signal.

METHOD

OF

DOLBY

SYSTEM

Signal

deviation

of

Dolby

System

is

shown

in

Fig.

1.

Fig.

1

shows

the

Record

(Encoding)

and

Playback

(Decoding)

characteristics

for

a

signal

of

about

5

kHz

at

different

signal

levels.

For

example,

following

a

level

in

Fig.

1.

1.

When

—30

dB

REC

signal

is

applied.

It

is

boosted

to

~—20

dB

and

recorded

on

a

magnetic

tape.

[ENCODED

or

COMPRESSED]

2.

Playing

back

this

recorded

tape

(at

—20

dB).

The

output

signal

is

attenuated

by

the

Dolby

System

and

reproduced

at

—30

dB,

the

same

level

as

recorded.

[DECODED

or

EXPANDED]

0

dB

Dolby

Level

(a

=

el

Z.

aah

Sae

Ze

OUTPUT

LEVEL

(dB)

20 10

0

+10

INPUT

LEVEL

(dB)

FIG.

1

Tape

DOLBY

ENCODER

REC

PRE

AMP

(Rec)

Rec

Signal

Input

RPH

(Play)

REC RPH

PRE

AMP

(Red)

Fig.

2

shows

the

boosting

characteristics

of

the

fre-

quencies

for

different

signal

levels.

GAIN

(dB)

nm

is}

TEN

DUAL

HEED

G

0.1

FREQUENCY

(kHz)

FIG.

2

Fig.

3

shows

the

general

boosting

vs.

attenuation

Characteristics

for

record

and

playback

with

the

resulting

overall

Record

Playback

response.

The

point

at

which

the

Record

and

Playback

curve

flattens

out

the

0

dB

level

and

it

is

called

the

Dolby

Level.

The

Dolby

level

corresponds

to

a

level

at

which

the

magnetic

flux

density

of

the

signal

recorded

on

tape

is

200

pwb/mm

and

is

indicated

by

+3

dB

on

the

VU

meter

of

this

unit.

GAIN

(dB)

FREQUENCY

(kHz)

FIG.

3

DOLBY

PLAYBACK],

InECODER

MAIN

eee

PRE

AMP

(Play)

AMP

DOLBY

NOISE

REDUCTION

SYSTEM—2

PRINCIPLE

OF

NOISE

REDUCTION

Much

of

the

audible

noise

is

a

hiss

noise

in

the

medium

and

high

frequencies

created

during

the

recording

process

on

magnetic

tape,

while

some

of

the

noise

is

playback

amplifier

noise.

At

high

input

levels

the

noise

is

suppressed,

however,

at

low

input

signal

levels

the

Signal

to

Noise

Ratio

(S/N)

decreases

and

the

noise

is

heard.

The

Dolby

System

in

this

unit

is

designed

to

solve

this

problem

by

boosting

the

low

level

mid

and

high

fre-

quencies

by

about

10

dB

during

recording

(com-

pressing)

and

attenuating

(expanding)

the

same

signals

during

playback

by

an

equal

amount,

as

shown

in

Fig.

4.

The

amount

of

boost/attenuation

depends

on

the

level

and

the

frequency

of

the

signal.

Fig.

5

shows

the

noise

reduction

with

Dolby

“IN”

vs.

Dolby

“OUT”.

DOLBY

OUT

Approx

10

dB

—

DOLBY

IN

NOISE

LEVEL

100

1k

10k

FIG.

5

CIRCUIT

OPERATION

The

operation

of

the

Noise

Reduction

System

is

shown

in

the

Block

Diagram

of

Fig.

6.

By

turning

the

Rec/Play

switch

to

Record

or

Play

and

the

Dolby

In/Out

switch

to

IN

this

circuit

operates

either

in

the

Encode

or

Decode

mode,

as

follows:

[ENCODE]:

ST3,

ST7,

ST11

and

ST9

in

RECORD

position.

The

recording

signal

is

applied

to

the

REC

AMP

and

passes

through

AMP

“A”

of

the

Dolby

IC

and

the

low-

pass-filter

(LPF),

and

enters

AMP

“B”

the

LPF

attenuates

unwanted

frequencies

such

as

tape

recorder

bias

of

FM

MPX

sub.

carrier

signals

to

the

level

which

will

not

influence

the

Dolby

circuit

operation.

The

out-

put

signal

of

AMP

“B”

is

divided

into

two

paths;

one

is

directly

supplied

to

ADDER

“E”,

and

is

called

a

direct

signal,

while

the

other

controls

the

noise

reduction

signal.

This

signal,

passing

through

ST9,

S801-3,

high-

pass-filter

(HPF),

variable

resistance

‘“F”

and

AMP

“C”,

enters

ADDER

“E”

and

increases

the

direct

signal.

As

a

result

the

REC

signal

from

INVERTER

“K”

is

boosted.

[DECODE]:

Essentially

the

same

circuitry.

ST3,

ST7,

ST11

and

ST9

in

PLAY

posi-

tion.

The

playback

signal

from

the

playback

head

(RPH)

is

applied

to

PLAYBACK

PRE

AMP

and

passes

through

ST7,

AMP

“A”

of

the

Dolby

IC,

“LPF”

and

AMP

“B”,

and

then

it

enters

ADDER

“E”

as

the

direct

signal.

One

part

of

output

signal

from

INVERTER

“kK”,

passing

through

ST8,

is

supplied

to

the

MAIN

AMP,

and

the

other,

as

Noise

Reduction

Signal,

passes

through

$801-3,

“HPF”.

Variable

Resistance

“F”

and

AMP

“C”,

are

applied

to

ADDER

“E”

in

opposite

phase.

As

a

result,

the

level

of

the

playback

signal

is

attenuated.

This

circuit

operates

to

boost

at

REC

position

[ENCODE]

and

to

attenuate

at

PLAY

position

[DECODE].

“G”

is

the

rectifying

and

smoothing

circuit

of

Noise

Reduction

Signal

and

controls

Variable

Resistance

“F’,

And

“F”

and

“HPF”

compose

the

dynamic

high

pass

filter,

and

control

the

boosting

and

attenuating

degree

of

high

and

medium

frequency

in

response

to

the

signal

level

(Fig.

2

and

Fig.

3).

‘“T”

is

the

circuit

set-

ting

the

response

time

of

Dolby.

[rv

|

1c

80l

L803

oN

DOLBY

B

TYPE

INTEGRATED

CIRCUIT

RBIS

(6)

INVERTER

NE646B

ca37t

ds

x

lev

10070

a

(4)

sT7

Rel7

=

cals

iK

Flov

pray

Back

“La

4]

aRee

(9)

Ba

PRE

AMP

Lx

RPH

O00

6)

Cy

5

are

Y.

is

C835

R8IZ

35V

0.68

IK

High

Level

Signal

——

=

Wy

—Wu

a

ee

St

WrWu

earner

on

ADAG

—10

dB

—20

dB

WU

=

Wu"

4

Low

Level

Signal

——

VL

Wu

0

dB———=""_

fj

High

Level

Signal

——~

30

dB

——=

"|

fP

Low

Level

Signal

—40

dB

Tape

Noise

=

www

—e

www

=

—50

dB

wewew

Tape

Noise

(DOLBY

OUT)

www:

—.

—

60

dB

———a=»

Wawwww

Tape

Noise

(DOLBY

IN)

FIG.

4

SG-5090/(m)

O=—D—O—)

0)

49

9)

rae

gay

—?

1

Val

r=

tats

a

Sign

of

|

Play

R

R423

Sj

a

ip

7

Rep

SS

Se

a

R825

|R827

I

tlt

Ree

Vea

oy

Sse

Slonal

Tb

gy

tr4

|

|

4

4

IRgig

+!

Ea

20K

VR403

!

|

Play

Rel

13.3K2

ogo)

-ca2sze

|

7p

°

10K

|

Eee?

da

ajoopT

IV

¥

|

+

a0

m

831]!

C833]!

5

33)

|

!

fat

5

y

27

C829

c

LE--~L--~

|

rig

0.097,

|

35V|35vo,

Dolby

level

REC

VR

Vegis

eae

mee

|

1

oO!

Adjust

LPF

cen3!5600°

230

K

i

i

STil

184

—T

~~

1

pe

T

aa

R447

Play[

4

4

|

Rec

REC

AMP

47K

To

VU

METER

R449

?

at

Pa

O09

IM

TO

MIC

AMP

4.7K

he

‘i

TO

MAIN

AMP

SG-5090/(m)

FM

“SENSOR”

TOUCH

PRESET

TUNING

SYSTEM

GENERAL

DESCRIPTION

The

FM

“Sensor

Touch”

Preset

Tuning

System

of

the

equipment

is

designed

for

an

easy

soft

touch

selection

of

six

stations.

This

system

is

composed

of

an

electronic

tuning

circuit

equipped

with

varactor

diodes

and

sensing

driver

cir-

cuit

using

two

integrated

circuits,

|C101

SN94041

and

IC102

SN94042.

CIRCUIT

OPERATION

The

operation

of

FM

“Sensor

Touch”

Preset

Tuning

System.

iC101

SN94041

operates

to

select

the

station

for

MANUAL,

P1

and

P2,

and

1C102

SN94042

is

for

P4,

When

the

sensor

button

of

P1

is

touched

with

a

finger,

the

detecting

circuit

of

P1

operates

to

energize

LED

driver

and

channel

out

circuit

and

then

a

LED

lights.

While

applying

voltage

that

is

adjusted

by

VR101

to

the

varactor

diode

of

the

electronic

tuning

circuit,

the

station

is

selected.

Muting

circuit

enables

to

decrease

selection

noise

when

selecting

channels,

by

flowing

the

signal

from

No.

6

pin

of

IC

101

to

Q101.

Hold

circuit

and

reset

circuit

are

provided

to

lock

the

selected

station

when

releasing

the

finger.

Initial

Set

circuit

of

C101

operates

to

tune

the

station

of

turned

ON

again

after

turning

OFF.

VR111

P5,

P6

and

P7.

FM

TUNER

1c101

1

i

P41

|

o-#b

fa

i\

2

O-

S

!

[LED

Driver

|

Driver

ph

MANUAL

p2

|

sen.

|

[Hoi

|

rp

pL

tse

ene]

=

ee

ale

il

©

ne

a

Sen

Hold

aaa

lea

ou

vacant,

©

Qi

2

@-

Terminal

ia

7

7

+

|

es

(8)

WANUAL

VA)

VRTOF

ahah

VR107

Vacant

1

(

—|

Channel

Out

iG

)

Terminal

SG-5090/(m)

3)

[cetO-

rT

LED

Driver

ph

=o

Be

OP

VV

[feb

aby

VR108

4153

(y/

DD

jy’

©)

”

moet

e

EY

[Tn

7

OPE

FM

DIAL

METER

One

Shot

Multivibrator