Technics QUARTZ ST-X999 Manual de usuario

CYUARTZ

Synthesizer

AM/FM

Stereo

Tuner

SPECIFICATIONS

(DIN

45

500)

m

FM

TUNER

SECTION

Frequency

range

Sensitivity

S/N

30

dB

S/N

26

dB

S/N

20

dB

IHF

46

dB

stereo

quieting

sensitivity

Total

harmonic

distortion

MONO

STEREO

S/N

MONO

STEREO

Frequency

response

20

Hz

~

15

kHz,

Alternate

channel

selectivity

+400

kHz

Capture

ratio

Image

rejection

at

98

MHz

IF

rejection

at

98

MHz

Spurious

response

rejection

at

98

MHz

AM

suppression

Stereo

separation

1

kHz

Carrier

leak

19

kHz

38

kHz

Channel

balance

(250

Hz

~

6,300

Hz)

Limiting

point

Bandwidth

IF

amplifier

FM

demodulator

Antenna

terminals

m

AM

TUNER

SECTION

Frequency

range

MW

530

kHz

~

1620

87.50~

108.00

MHz

(0.05

MHz-steps)

1.5

pV

(IHF,

usable)

~70

dB

(—80

dB,

IHF)

—75

dB

(—80

dB,

IHF)

Selectivity

(+

9

kHz)

MW

(at

999

kHz)

iow

aot

image

rejection

1.2

pV

(759

)

0.9

pV

(750)

MW

(at

999

kHz)

28

uV/75Q

IF

rejection

MW

(at

999

kHz)

0.15%

ee

SECTION

0.3%

70

dB

(78

dB,IHF

)

Precision

65

dB

(71

dB,IHF

)

Functions

+0.5

dB

~

-1.5

dB

70

dB

1.0dB

Programmable

content

90

dB

90

dB

90dB_

Setting

intervals

55

dB

Priority

order

40dB

&

GENERAL

Output

voltage

Power

consumption

Power

supply

+1.2dB

Dimensions

(W

x

H

x

D)

1.0

pV

.

Weight

180

kHz

1000

kHz

75Q

(unbalanced)

522

kHz

~

1611

kHz

(9

kHz-steps)

kHz

(10

kHz-steps)

ORDER

NO.

AD89051

18C2

ervice

Manual

Tuner

3

T-X999

Color

|

(K)...Black

Type

|

Area

Country

Code

Area

Color

(EG)

|

F.

R.

Germany

&

Italy

(K)

Sensitivity

(S/N

20

dB)

MW

20

pV,300

pV/m

55

dB

40

dB

60

dB

Quarz-jock

type

24-hour

indication

Within

0

sec.~

+10

sec.

monthly

(at

25°C)

24-hours

programmable

weekly

(1

setting)

once

only

(1

setting)

sleep

(at

10~60

min.

10-min.

intervals)

Program

source

(FM,

MW)

Power

ON/OFF

setting

Designation

of

preset

station

1

minute

~23

hours,59

minutes

(at

1-min.intervals)

sleep,

once,

weekly

0.5

V

(1.0

V,

IHF)

9W(clock

5W)

AC

50

Hz/60

Hz.220V

360

x

64.5

x

288

mm

(14-3/16”

x

2-17/32”

x

11-11/32”)

2.1

kg

(4.6

Ib.)

Specifications

are

subject

to

change

without

notice.

Weight

and

dimensions

are

approximate.

Technics

Matsushita

Electric

Industrial

Co.,

Ltd.

Central

P.O.

Box

288,

Osaka

530-91,

Japan

@

CONTENTS

Page

ACCESSORIES.

sis

s2

Ses

seed

eee

naeneaeehesaasa

dad

2

CIRCUIT

BOARDS

AND

WIRING

CONNECTION

CONNECTIONS

2.0.0.0...

ccc

cece

eee

eet

2

DIAGRAM

So.

nasa

cetais

denied

och

eee

14~16

LOCATION

OF

CONTROLS

...............00

20

ee

eens

3

FUNCTIONS

OF

IC

TERMINALS.................0.,

17

DISASSEMBLY

INSTRUCTIONS

...............00.

4,5

DESCRIPTION

OF

FLPANEL

............2.....00.,.

18

MEASUREMENTS

AND

ADJUSTMENTS

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

6,7

RESISTORS

AND

CAPACITORS

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

19~21

BLOCK

DIAGRAM

..........

000

e

cece

eter

teens

8,9

REPLACEMENT

PARTS

LIST

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

21~23

SCHEMATIC

DIAGRAM

..............000

eee

ee

10~13

EXPLODED

VIEWS...

1...

eect

ee

ees

24

TERMINAL

GUIDE

OF

IC’S,

TRANSISTORS

AND

DIODES:

“eidsrevnatetedeig

cin

fa

Sis

She

owe

nas

Gs

14

m@

ACCESSORIES

Stereo

connection

cable

(SUPK2203-1)

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

1

©3-core

flat

cable

(SWKTX930E)

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

ccc

ve

ee

1

@FM

indoor

antenna

(SSA270M)

................-.0005

1

e@AC

power

supply

cord

(SFDACO5E03)

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

1

@AM

loop

antenna

(SPB1162T)

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

ee ee

eee

1

eRemote-control

transmitter

(EUR64754)

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

1

e@AM

antenna

holders

(SMA233-1M)

..............-065

1

Batteries

(RO3)

.....

0.

cece

eee

ee

2

(SMA231M)

.......

0.

cece

eee

1

e@Screws

(XTB3+10AFZ)

.....

0...

cee

ccc

eens

2

™@

CONNECTIONS

7

AM

LOOP

ANT

“SWITCHED”

outlet:

This

unit

CONTROL

AMPLIFIER

eet

Stereo

connection

A

cable

(included)

AC

power

supply

cord

(Included

with

amplifier)

3-core

flat

cable

(included)

Amplifier

(option)

Ze

—

@O0OOO

PQOOOO®

Audio

equipment

rated

up

to

500W

can

be

connected.

Power

is

controlled

by

power

switch

of

this

unit.

Household

AC

outlet

2)

AC

power

supply

cord

(included)

The

configuration

of

the

AC

outlet

and

AC

power

supply

cord

differs

according

to

area.

ORDER

NO.

AD8905118C2-A

CQUARTZ

Synthesizer

MW/FM

Stereo

Tuner

ST-X999

@

Frequenzzahler

@

Drosselspule(100,H)

@

Widerstand(100kQ)

m

MESSUNGEN

UND

JUSTIERUNGEN

UKW

JUSTIERUNGEN

Einstellungen

der

Bedienelemente

und

zu

verwendende

Gerate.

@

UKW-Messender(UKW-MS)

@

Stereo-Modulator

@

Verzerrungs-Analystator

@

Elektronische

Gleichstrom-Voltmeter(EVM)

Anmerkung:

Fir

2201,

Z202,

L321

und

L322

werden

bereits

justierte

Ersatzteile

geliefert.

Die

Kerne

dieser

Teil

daher

nicht

drehen.

UKW-MONO-VERZERRUNGS-JUSTIERUNG

1.Der

Testaufbau

ist

in

der

Abbildung

gezeigft.

2.Stellen

Sie

die

Einheit

auf

“"FM(UKW)”

Betrieb.

ZUSTAND

DES

UKW-MESSENDERS

Modulation

Modulationsfrequenz

Ausgangspegel

3.Die

Radiofrequenzanzeige

und

den

Messender

auf

100.10MHz

einstellen.

4.Den

Kern

von

T201

so

justieren,

daB

die

im

Signalzustand

gemessene

Spannung

OmV

(0+20mV)

im

300mV-Bereich

betragt.

5.7202

so

justieren,

daB

der

Verzerrungsfaktor

des

linken

Kanals

minimal

wird.

6.Schritte

4

und

5

einige

Male

wiederholen.

7.Versichern

Sie

sich,

daB

die

Verzerrungsfaktoren

von

Kanal

L

und

Kanal

R

annahernd

gleich

sind

und

auf

ein

Minimum

gehaiten

sind.

Anmerkung:

Fur

die

Justierung

ist

ein

Schraubendreher

aus

Kunststoff

zu

verwenden.

MPX-SGO-JUSTIERUNG

1.Der

Testaufbau

ist

in

der

Abbildung

gezeigt.

2.Den

UKW-Bertriebsart-Wahlshalter

in

die

“on/auto”-Po-

sition

stellen.

3.Radio

und

MeBsender

auf

100.10MHz

einstellen.

4.VR301

auf

19kHz

+

30Hz

auf

der

Frequenzzahleranzeige

justieren.

@

VERWENDUNG

EINES

ALTERNATIVSYSTEMS

1.Stereosignal

vom

Mefsender

eingeben

oder

eine

Stereo-Sendung

empfangen.

2.VR301

justieren,

bis

die

Stereo-Anzeige

aufleuchtet.

Den

Arm

von

VR301

mit

Lack

sichern,

wie

in

der

Abbildung

gezeigt.

Digitaler

Frequenzmesser

“Stereo”

AUS

ZUSTAND

DES

UKW-MESSENDERS

Modulation

...

100%

Modulationsfrequenz

.........0KHz

Ausgangspegel,

“Stereo”

AUS

Stellung

“Stereo”

EIN

Stellung

(Anzeigebeleuchtung)

Einstellpunkt

des

pilotschaltkreis’

ELNSTELLUNG

DER

PHASENSPERRUNG

EINES

SCHLEIFENVERSCHIUSSES

1.Der

Anschlu8

der

Testausriistung

ist

in

der

Abbiidung

dargestellt.

2.TP903

und

TP904

Uberbriicken.

3.CT901

unter

Beobachtung

des

Frequenzzahlers

auf

524,288

kHz+10

Hz

einstellen.

4.Nach

der

Einstellung

die

Uberbriickung

zwischen

TP903

und

TP904

entfernen.

5.Den

Netzschalter ausschalten.

UKW

STEREO

KLIRRFAKTOR-JUSTIERUNG

1.Der

Testaufbau

ist

in

der

Abbildung

gezeigt.

2.Stellen

Sie

die

Einheit

auf

"FM(UKW)”

Betrieb.

3.Die

Radiofrequenzanzeige

und

den

Messender

auf

100.10MHz

einstellen.

4.L1

so

justieren,

daB

der

Verzerrungsfaktor

des

linken

Kanals

minimal

wird.

5.,Uberprifen,

daB

die

Verzerrungsfaktoren

des

linken

und

rechten

Kanals

fast

gleich

sind.

Anmerkung:

Fur

die

Justierung

ist

ein

Schraubendreher

aus

Kunststoff

zu

verwenden.

Eine

MeBsonde

hoher

Impedanz

verwenden.

Digitaier

Frequenzmesser

ZUSTAND

DES

UKW-MESSENDERS

Modulation

“L”order

“R”

Betriebsart

90%

,Pilotssigna!l

10%

Modulationsfrequenz

.........1kKHz(Pilot

19kHz)

Ausgangspegel

BEBO

UKW

ANT

—

ay’

A

8

STEREO

MOOULATOR

Abgabebetried

...

L

oder

A

Printed

in

Japan

F890502,100

TW/FF/YY

m

LOCATION

OF

CONTROLS

Tuner

section

i

Power

“STANDBY

())

/ON”

switch

(POWER

“ON/STANDBY

(!)”)

Remote-control

signal

receptor

(SENSOR)

FM

mode

selector

(FM

MODE)

Tuning

buttons

(TUNING)

Band

selectors

(BAND

SELECTOR)

Preset-tuning

buttons

(1-0)

(28

CHANNEL

RANDOM

PRESET

TUNING)

Memory

button

(MEMORY)

Timer

section

Digital

frequency

display

Quartz-lock

indicator

(QUARTZ

LOCK)

Memory

indicator

(MEMO)

Channel

display

FM

stereo

indicator

(STEREO)

FM

mode

indicators

Es

Ae

oo

&

(=| [=|

[>]

[&) fs)

SS)

6||7

F

[1]

Sleep

button

(SLEEP)

[A]

Stand-by

indicator

(STANDBY)

[2]

Cancel

button

(CANCEL)

Day

display

[3]

Stand-by

button

(STANDBY)

Timer

ON/OFF

indicator

(ON/OFF)

[4]

Read

button

(READ)

[D]

Time

display

[5]

Set

button

(SET)

[E]

Colon

indicator

[6]

Select

buttons

(SELECT)

[F]

Timer-mode

indicator

(ONCE/WEEKLY/SLEEP)

Clock

set

button

(CLOCK

SET)

*

The

operating

procedures

and

features

are

similar

to

those

for

and

of

the

ST-X990.

eRemote

control

transmitter

(EUR64754)

oO

ROPE

m

DISASSEMBLY

INSTRUCTIONS

Ref.

No.

1

Removal

of

the

cabinet

|

Procedure

|

@Remove

the

4

screws

(@~Q).

|

1

-—___-

+

Ref.No.

|

Removal

of

the

front

panel

3.

Remove

the

3

screws

(Q@~®).

2

4.

Remove

the

front

panel

in

the

direction

of

the

arrow.

|

Procedure

|

1.

Remove

the

flat

cable

(J901,

J902).

1-2

2.

Push

the

front

panel

in

the

direction

of

the

arrow

@

and

remove

the

holder

in

the

direction

of

the

arrow

@).

Removal

of

the

flat

cable

Pull

out

the

flat

cable

while

pressing

the

Flat

connector

cable

Connector

Ref.

No.

3

2.

Remove

the

3

screws

(@~®).

3.

Slightly

pull

the

front

panel

toward

you

and

remove

the

main

P.C.B.

Removal

of

the

main

P.C.B.

Procedure

|

1,

Remove

the

10

screws

(Q@~®).

133

Removal

of

the

preset

tuning

SW

P.C.B.

and

band/tuning/timer

operation

SW

P.C.B.

Band/

tuning

/

timer

operation

SW

P.C.B.

Procedure

12-4

1.

Remove

the

4

screws

(@~O).

2.

Remove

the

band/tuning/timer

operation

SW

P.C.B.

3.

Remove

the

1

screw

(@).

4.

Push

the

4

claws

and

remove

the

preset

tuning

AA

rae

SW

P.C.B.

Preset

tuning

SW

P.CB,

~~

4A)

§

-

‘

e

Ref.

No.

5

=

Procedure

Removal

of

the

remote

control

j

1.Remove

the

battery

cover

lid.

3.Insert

a

screwdriver

blade

between

the

2.

Remove

the

one

screw

(@).

upper

and

lower

covers

inside

the

battery

compartment

and

them

slowly

loosen

the

bottom

cover.

Battery

cover

lid

m@

MEASUREMENTS

AND

ADJUSTMENTS

FM

ADJUSTMENT

Control

positions

and

equipment

used

@

FM

signal

generator(FM-SG)

@

Frequency

counter

e@

Stereo

modulator

@

Choke

coil({100uH)}

@

Distortion

analyser

@

Resistor(100kQ)

@

DC

electronic

voltmeter(EVM)

Note:

For

Z201

(AM-ANT/OSC),

Z202

(AM-IFT),

L321

(L.P.F)

and

L322

(L.P.F),

they

are

supplied

as

adjusted

parts.

So,

do

not

turn

the

cores

of

the

parts.

It

is

not

necessary

to

adjust

the

AM

circuit.

FM

MONO

DISTORTION

ADJUSTMENT

FM

SIGNAL

GENERATOR

CONDITION

1.Test

equipment

connection

is

shown

in

figure.

Modulation

2.Set

the

unit

to

"FM”

mode.

Modulation

frequency

3.Set

the

radio

frequency

display

and

signal

generator

to

Output

leve!

100.10MHz.

4.Adjust

the

core

of

T201

so

that

the

voltage

measured

in

signal

mode

is

OmV(O0+20mV)

in

300mV

range.

5.Adjust

T202

so

that

the

distortion

factor

of

L-CH

is

mini-

mized.

6.Repeat

steps

4

and

5.

7.Make

sure

that

the

distortion

factors

of

L-CH

and

R-CH

are

nearly

the

same

and

minimum.

Note:

The

adjusting

screwdriver

used

should

be

made

of

resin.

MPX

VCO

ADJUSTMENT

1.Test

equipment

connection

is

shown

in

figure.

2.Set

the

unit

to

“on/auto”

position.

3.Set

the

radio

frequency

display

and

signal

genarator

to

100.10MHz.

4.Adjust

VR301

for

19kHz+30Hz

on

frequency

counter

reading.

USING

ALTERNATE

SYSTEM

1.Receive

the

stereo

broadcast.

2.Adjust

VR301

until

stereo

indicator

lights

up.

Fix

the

arm

of

VR301

as

shown

in

figure.

Frequency

counter

"*Stereo"’

OFF

FM

SIGNAL

GENERATOR

CONDITION

Modulation

one

100%

Modulation

frequency

........

OkHz

Output

level...

eee

66dB

@-®,

O-©.......

“Stereo”

OFF

position

®-®.......

“Stereo”

ON

position

(indicator

fighting)

Os

edieicvece

Adjust

point

of

pilot

circult

PLL

CLOCK

FREQUENCY

ADJUSTMENT

Use

a

high

impedance

probe.

P : :

‘

‘s

Frequency

Counter

1.Test

equipment

connection

is

shown

in

figure.

2.Short

TP903

and

TP904.

3.Adjust

CT901

for

524.288kHz+10Hz

on

frequency

counter

reading.

4.

After

the

adjustment,

open

up

the

shorting

between

TP903

and

TP904.

5.

Turn

off

the

power

switch.

kHz

a

TP901

0

Ee?

FM

ANT

(750)

TP902

(GND)

FM

STEREO

DISTORTION

ADJUSTMENT

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.Adjuste

L1

so

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

and

minimum.

Modulation

Output

level

Note:

The

adjusting

screwdriver

used

should

be

made

of

resin.

eADJUSTMENT

POINTS

AMLOOP

ANT

FMANT

75Q

OUTPUT

|

(100.0

MHz)

fa]

FM

FRONT-END

PACK

FM

offset

FM

MONO

distortion

PLL

Clock

FM

MPX

VCO

(19

KHz

output)

]

~S

@|

PLL

Clock

GND

{C901

FM

MPX

VCO

(19

kHz)

Modulation

frequency

FM

offset

(—)

adj

FM

offset

(+)

adj

FM

SIGNAL

GENERATOR

CONDITION

“L”mode

or

“R”mode

90%,

Pilot

10%

1kHz(Pilot

19kHz)

66d

FM

ANT

AM

ANT

AM

Signal

Zi

FM

FRONT

END

faa

ae

m@

BLOCK

DIAGRAM

CF201

CF

202

8

sf

FM

OSC

Q201,202

r

i

a

wi

|

©

eat)

Qld!

|

Qi02

FM/AM

Loop

filter

aa

FM

MONO

DISTORTION

adj.

See

°

¢

T201,202

“iy

AN7273A

det,

coil

FM/AM

IF

AMP.

DET,

16

I7

de

4

med

AMP

O==0

7

L

C201

Q205

Signal

receive

detector

X10

(AM)

Q207~209

(72MHz)

FM/AM

=

Power

supply

a

Y

selector

=

ry

—

SDC

INT

©

PLL

FREQUENCY

RESET

©

SYNTHESIZER

DgIU

ogi!

p33}

0912

:

BA

Ko

;

D913

py

re

PO3Q

m

Ty

T

q

901

$902 $903

$904

|

goo

(1)

(So)

3

(2)

ie

re

(3)

$s

4

(4)

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Hf

«se

IC

901

$905

$906

$907

$908

p

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Technics QUARTZ ST-X999 Manual de usuario

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