Sony ST-JX311 Manuale utente

SERVICE

MANUAL

ST-JX311:

This

set

is

the

tuner

section

in

SEN-311.

ST-IX311/JX4

11

|

US

Model

Canadian

Model

E

Model

Australian

Model

Photo:

ST-JX411

SPECIFICATIONS

FM

tuner

section

Tuning

range

Antenna

terminals

87.5

-—

108

MHz

75

ohms

unbalanced

300

ohms

balanced

Intermediate

frequency

10.7

MHz

Sensitivity

(at

50

dB

quieting

)

22.1

dBf,

7

nV

(mono),

42.1

dBf,

70

pV

(stereo)

Usable

sensitivity

19.5

dBf,

5

pV

(IHF)

Signal-to-noise

ratio

(at

75

kHz

deviation)

80

dB

(mono),

75

dB

(stereo)

Harmonic

distortion

0.3%

(mono),

0.5%

(stereo)

at

1

kHz

Separation

40

dB

at

1

kHz

Frequency

response

30Hz-

15

kHz

‘33

dB

Selectivity

55

dB

at

400

kHz

AM

suppression

ratio

54

dB

Image

response

ratio

50

dB

IF

response

ratio

90

dB

Spurious

response

ratio

70

dB

Automatic

tuning

threshold

17.8

wV

(30

dBf)

Output

775

mV,

4.7

kohms

(at

75

kHz

deviation)

AM

tuner

section

Tuning

range

US,

Canadian

model:

530—1,710kHz

(10

kHz)

531—1,710kHz

(9kHz)

E,

Australian

model:

531

—1,602kHz

Antenna

AM

loop

antenna,

External

antenna

terminal

Intermediate

frequency

450

kHz

Usable

sensitivity

AM

loop

antenna:

500

pV/m

(999

kHz

or

1,000

kHz)

Signal-to-noise

ratio

54dB

Harmonic

distortion

0.5%

Selectivity

35

dB

(9

KHz)

38

dB

(10

KHz)

General

Power

requirements

—_-

US,

Canadian

model:

120

V

AC,

60Hz

_

E,

Australian

model:

240V

AC,

50Hz

Power

consumption

|

8W

(ST-JX411)

AC

outlet

(U.S.A.

model

only)

1

unswitched,

120W/1

A

max.

Dimensions

Approx.

430

x

80

x

295

mm

(w/h/d)

(17

x

31/4

x

115/g

inches)

Weight

ST-JX311:

Approx.

2.1kg

(4

Ib

1102)

ST-JX411:

Approx.

2.6kg

(5

Ib

1202)

Accessories

supplied

ST-JX311:

Flat

cord

with

11-5-5-pin

connectors

(1),

connected

to

TC-W311.

Flat

cord

with

9-9-pin

connectors

(1)

Remote

commander

RM-S102

(1)

Sony

batteries

SUM

3

(NS)

(2)

Remote

control

cord

(1)

Audio

connecting

cord

(1)

AM

loop

antenna

(1)

FM

toop

antenna

(1)

ST-JX411:

Design

and

specifications

subject

to

change

without

notice.

FM

STEREO/FM-AM

TUNER

SONY.

ST-JX311/JX411

SAFETY

CHECK-OUT

After

correcting

the

original

service

problem,

perform

the

following

safety

check

before

releasing

the

set

to

the

customer:

Check

the

antenna

terminals,

metal

trim,

‘‘metallized”

knobs,

screws,

and

all

other

exposed

metal

parts

for

AC

leakage.

Check

leakage

as

described

below.

LEAKAGE

TEST

The

AC

leakage

from

any

exposed

metal

part

to

earth

ground

and

from

all

exposed

metal

parts

to

any

exposed

metal

part

having

a

return

to

chassis,

must

not

exceed

0.5mA

(SOO

microampers).

Leakage

current

can

be

measured

by

any

one

of

three

methods.

1.

A

commercial

leakage

tester,

such

as

the

Simpson

229

or

RCA

WT-540A.

Follow

the

manufacturers’

instructions

to

use

these

instru-

ments.

2.

A

battery-operated

AC

milliammeter.

The

Data

Precision

245

digital

multimeter

is

suitable

for

this

job.

3.

Measuring

the

voltage

drop

across

a

resistor

by

means

of

a

VOM

or

battery-operated

AC

volt-

meter.

The

“limit”

indication

is

0.75V,

so

analog

meters

must

have

an

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

of

a

passive

VOM

that

is

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

a

2V

AC

range

are

suitable.

(See

Fig.

A)

To

Exposed

Metal

Parts

on

Set

AC

0.15

pF

15k

voltmeter

(0.75

V)

=

Earth

Ground

Fig.

A.

Using

an

AC

voltmeter

to

check

AC

leakage.

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

MARK

A

OR

DOTTED

LINE

WITH

MARK

A

ON

THE

SCHEMATIC

DIAGRAMS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

TO

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUB-

LISHED

BY

SONY.

TABLE

OF

CONTENTS

Section

Title

Page

Specifications

ee

a

l

Safety

Check-out

Cem

meer

eer

e

renee

sre

swerve

sresseove

2

SECTION

1.

GENERAL

1-1.

Location

of

Controls

---+--+++++ree

reese

3

1-2.

Connections

rs

4

SECTION

2.

ELECTRICAL

ADJUSTMENTS

:----

6

SECTION

3.

DIAGRAMS

3-1.

Printed

Wiring

Boards

----+---+--++++-++--

7

3-2.

Schemartic

Diagram

(Tuner

Section)

------

11

3-3.

Semiconductor

Lead

Layouts

------------>

13

3-4.

Waveforms

ee

cr

as

13

3-5.

Schematic

Diagram

(Control

and

Power

Section)

-----------

14

SECTION

4.

EXPLODED

VIEW

....------------

17

SECTION

5.

ELECTRICAL

PARTS

LIST

------

19

To

change

the

AM

tuning

interval

The

AM

tuning

interval

is

preset

at

the

factory

to

10

kHz

to

match

the

frequency

allocation

system

of

your

country.

To

change

the

interval

to

9

kHz,

proceed

as

follows.

1

Depress

the

POWER

switch

to

turn

on

the

unit.

2

Set

the

BAND

FM/AM

selector

to

AM.

3

Press

the

POWER

switch

to

turn

off

the

unit.

4

Hold

the

TUNING

knob

in

the

“+”

position,

and

depress

the

POWER

switch

to

turn

on

the

unit.

To

reset

the

interval

to

10

kHz,

follow

the

same

procedure.

Note

When

the

interval

is

changed,

all

preset

stations

which

you

have

memorized

using

the

numeric

buttons

will

be

erased

from

the

memory.

After

changing

the

interval,

be

sure

to

preset

the

stations

again.

ATTENTION

AU

COMPOSANT

AYANT

RAPPORT

A

LA

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

MARQUE

/\

SUR

LES

DIAGRAMMES

SCHEMATIQUES

ET

LA

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

LA

SECURITE

DE

FONCTIONNEMENT.

NE

REMPLACER

CES

COM.

POSANTS

QUE

PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

CE

MANUEL

OU.

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

—)—

SECTION

1

GENERAL

1-1.

LOCATION

OF

CONTROLS

POWER

switch

(ST-JX411

only)

SHIFT

button

Display

window

MEMORY

SCAN

button

AUTO

TUNING

button

[6]

TUNING

control

BAND

FM/AM

selector

MEMORY

button

[9]

Numeric

buttons

This

section

is

extracted

from

instruction

manual.

1-2.

CONNECTION

°

Connect

the

AC

power

cord

last.

Make

sure

power

is

off.

°

Cord

plugs

and

jacks

are

color

coded.

Red

plugs

and

jacks

are

for

right

channel

(R)

and

white

ones

for

the

left

channel

(L).

«

The

cable

connectors

shouid

be

fully

inserted

into

the

jacks.

A

loose

connection

may

cause

hum

and

noise.

*

Keep

speaker

cords,

connecting

cords

and

power

cords

away

from

the

AM

loop

antenna

and

the

tuner’s

antenna

lead-in

to

avoid

possible

noise

pickup.

ST-JX311

Model

@

FM

wire

antenna

(supplied)

Speaker

system

Right

Left

For

better

FM

reception

Outdoor

FM

antenna

(75-ohm

coaxial

cable)

ST-JX311

For

better

AM

reception

Extend

a

6

to

15-meter

insulated

wire

out

of

doors

ig

also

necessary

to

connect

the

supplied

M

loop

antenna.

CAUTION

Do

not

connect

any

electical

home

appliances

such

as

an

iron,

fan,

TV

or

other

high

wattage

equipment

to

the

AC

OUTLET.

CAUTION

Do

not

put

anything

like

another

unit

to

obstruct

the

ventilation

holes

on

the

top

of

the

amplifier.

The

level

surface

installation

is

required

for

essential

air

ventilation

to

prevent

internal!

heat

built

up

in

the

amplifier.

©

Speaker

cords

You

can

connect

two

pairs

of

speaker

systems:

system

A

and

system

B.

They

can

be

selected

individually

or

simultaneously

with

the

selector

on

the

front

panel.

@

Flat

remote

control

cord

(supplied)

@

AC

OUTLET

Connect

the

blue

and

black

connectors

to

the

same

color

Use

this

to

power

an

audio

component

whose

power

connector

jacks

respectively

for

controlling

each

unit.

consumption

is

less

than

the

wattage

indicated

on

the

AC

OUTLET.

~~

This

outlet

is

controlled

by

the

power

switch

on

the

“

amplifier.

Push

in

until

it

clicks.

To

disconnect.

Adding

Other

Components

to

Your

System

Turntable

system

TA-AX3114

=

to

a

wall

outlet

Line

outputs

Audio

line

outputs

.

CD

player

Note

The

supplied

flat

cords

for

tape

deck

are

already

connected

to

the

TC-W311,

ST-JX411

Model

@

FM

wire

antenna

(supplied)

@

AM

loop

antenna

(supplied)

To

attach

to

a

wall

CONTROLS

OUT

ST-JX414

mS

|@|

t

Sy

=

wp

CONTROLS

to

a

wall

outlet

or

an

:

ar

‘

a

AC

outlet

of

For

better

FM

reception

udio

connecting

a

cord

(supplied)

the

ampiifier

Flat

remote

control

P

Extend

a

6

to

15-meter

err

Outdoor

FM

antenna

insulated

wire

out

of

doors.

Amolifier

(75-ohm

coaxial

cable)

CONTROLS

Oe

It

is

also

necessary

to

connect

the

supplied

AM

loop

antenna.

®

Antenna

Ground

To

prevent

hum,

connect

the

ground

wire

to

ANTENNA

ground

terminai

(,4-).

When

an

outdoor

antenna

is

installed,

be

sure

to

connect

the

ground

wire

for

lightning

protection.

@

AC

OUTLET

(U.S.A.

model

only)

Use

this

to

power

an

audio

component

whose

power

consumption

is

less

than

the

wattage

indicated

on

the

AC

OUTLET.

This

outlet

is

controlled

by

the

power

switch

on

the

amplifier.

©

Fiat

remote

control

cord

(supplied)

IN:

Connect

to

the

CONTROL

S

OUT

connector

of

the

Soy

amplifier

for

whole

audio

system

remote

control.

OUT:

Connect

to

the

CONTROL

S

IN

connector

of

other

Sony

equipment

with

the

4-pin

flat

remote

control

cord

for

whole

audio

system

remote

control.

CAUTION

Do

not

connect

any

electicai

home

appliances

such

as an

iron,

fan,

TV

or

other

high

wattage

equipment

to

the

AC

OUTLET.

Note

to

CATV

system

indstaller

This

reminder

is

provided

to

cail

the

CATV

system

installer's

attention

to

Article

820-22

of

the

NEC

that

provides

guidelines

for

proper

grounding

and,

in

par-

ticular,

specifies

that

the

cable

ground

shall

be

connected

to

the

grounding

system

of

the

building,

as

Close

to

the

point

of

cable

entry

as

practical.

Push

in

until

it

clicks.

To

disconnect.

ST-JX311/JX411

SECTION

2

ELECTRICAL

ADJUSTMENTS

FM

SECTION

e

FM

Discriminator

Alignment

(NULL

check)

¢

FM

Stereo

Separation

Adjustment

Setting

:

Setting

:

FM

RF

stereo

signal

generator

FM

RF

stereo

"

signal

generator

Carrier

frequency

:

98

MHz

Output

level:

60

dBy

FM

ANTENNA

3002

terminals

nie

ee

CNJ2

(5

or

7

pin)

VOM

)

(DC

range)

TPi

NULL

terminal

Carrier

frequency

:

98

MHz

Output

level

:

60

dBy

|

(Soi

meees

Procedure

:

Tune

the

set

to

98

MHz,

Procedure

:

1,

Tune

the

set

to

98

MHz,

FM

stereo

2,

Adjust

T21

for

0

V

reading

on

the

VOM.

signal

generator

MBAs

VV

Note:

FM

TUNING

LEVEL

adjustment

should

be

macle

after

output.

chanhel

connection

reading

(dB)

FM

discriminator

alignment,

e

FM

TUNING

LEVEL

Adjustment

Adjust

RV21

for

minimum

reading,

Setting

:

FM

RF

stereo

signal

generator

Adjust

RV21

for

minimum

reading,

set

L-CH

Stereo

separation

:

(A)

=

(B)

R-CH

Stereo

separation

:

(c)-

(D)

FY

ONT

ENS

S008

The

separations

of

both

channels

should

be

equal,

terminals

Carrier

frequency

:

98

MHz

Output

level

:

25

dBy

Procedure

:

1.

Tune

the

set

to

98

MHz,

2,

Adjust

RV24

so

that

the

TUNED

LED

goes

on,

AM

SECTION

—TUNER

BOARD

—

(Component

side)

e

AM

Tuned

Indication

Lighting

Level

Adjustment

1C81

ie

t

Setting

:

;

!

14

pegubunas

Put

the

lead-wire

ne

antenna

close

to

Dat

Woe

set

RV21

TP

REO)

as

Oe

|

car

1021

Pu

(emaems

er

tt

RV22

30%

amplitude

modulation

by

400

Hz

signal

Output

level:

94

dBy

Procedure

:

1,

Tune

the

set

to

1,050

kHz

(US,

CANADIAN),

999

kHz

(EK,

AUS).

2,

Adjust

RV22

so

that

the

TUNED

LED

goes

on.

ST-JX311/JX411

{

2

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3

|

4

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5

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6

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7

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SECTION

3

DIAGRAMS

3-1.

PRINTED

WIRING

BOARDS

B

Note:

®

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parts

extracted

from

the

component

side.

@

|

&&

indicates

side

identified

with

part

number.

)

:

Pattern

on

the

side

which

is

seen.

c

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on

Inserting

the

Cord

to

the

Connector

on

Tuner

Board]

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Insert

the

cord

to

the

connector

fitting

@

of

the

cord

in

accordance

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the

white

mark

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the

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—Tuner

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3-2.

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[TUNER

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ST-JX311

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SEMICONDUCTOR

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LAYOUTS

EQA02-06C

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LAS667

1N4148M

RD30ESB3

10E2N

cathode

rr

comode

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l

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anode

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Note:

All

capacitors

are

in

wF

unless

otherwise

noted.

pF:

uur

50WV

or

less

are

not

indicated

except

for

electrolytics

and

tantalums,

ST-JX311/JX411

DTC114ES

28C2603-EF

28C3113-AB

285C2669-OY

2SK246GR3

28C2785-HFE

Voltage

and

waveforms

are

dc

with

respect

to

ground

under

no-signal

(detuned)

conditions.

no

mark:

FM

e

All

resistors

are

in

2

and

7,

W

or

less

unless

otherwise

specified.

4:

internal

component.

e

Eat

:

nonflammable

resistor.

fu}

:

fusible

resistor.

Voltages

are

taken

with

a

VOM.

(Input

impedance

10MQ)

Voltage

variations

may

be

noted

due

to

normal

produc-

tion

tolerances,

e

Waveforms

are

taken

with

a

oscilloscope.

Voltage

variations

may

be

noted

due

to

normal

produc-

tion

tolerances.

Note:

.

Note:

@

Circled

numbers

refer

to

waveforms.

The

components

identi-

fied

by

mark

Les

composants

identifiés

par

.

une

marque

/\

sont

critiques

©

Signal

path.

pour

la

sécurité.

c>

:FM

Ne

les

remplacer

que

par

une

piéce

portant

le

numéro

spéci-

or

dot-

ted

line

with

mark

are

critical

for

safety.

Replace

only

with

part

number

specified.

fié.

®

:

Bt

line.

®

(8

-|

:

B-

line.

©

[_—]:

adjustment

for

repair.

3-4.

WAVEFORMS

ST-JX311/JX411

3-5.

SCHEMATIC

DIAGRAM

—Control

and

Power

Section—

@

Refer

to

page

13

for

note.

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

2

22

23

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ese

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[CONTROL

BOARD]

|

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|

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INDICATOR

TUBE

REG

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PT501

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c

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POMER

TRANSFORMER

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=

503

0.01

£502

0.01

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60Hz

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s

'

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OUT LET

JU

|

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|

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100W

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BOARD

:

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i

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CN701

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fo

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602

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nen

nn

en

nn

ne

ee

en

ee

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==

15—

oe

|

NOTE:

—XX,

—X

mean

standardized

parts,

so

they

may

have

some

differences

from

the

original

one.

Color

Indication

of

Appearance

Parts

Example:

KNOB,

BALANCE

si

et

ae

SECTION

4

EXPLODED

VIEW

Items

marked

“

*"’

are

not

stocked

since

they

are

seldom

required

for

routine

service.

Some

delay

should

be

antici-

pated

when

ordering

these

items.

The

mechanical

parts

with

no

reference

number

in

the

exploded

views

are

not

supplied,

The

components

identified

by

mark

or

dotted

line

with

mark

are

critical

for

safety.

eplace

only

with

part

number

specified.

Les

composants

identifiés

par

une

marque

sont

critiques

pour

la

sécurité.

Parts

Cabinet's

e

Hardware

(#

mark)

list

is

given

in

the

color

last

of

this

parts

list.

Ne

les

remplacer

que

par

une

piéce

portant

le

numéro

spécifé.

@®

Abbreviation

AUS:

Australian

ST-JX411:

E

Model

ST-JX411:

E

Model

ST-JX311

ST-JX411

a

\

pT501

~~

“Howe

ST-JX411

supplied

not

supplied

a“

Ref.

No.

Part

No.

Description

Remark

Ref.No.

Part

No.

Description

Remark

1

4-943-466-01

KNOB

(TUNING)

18

°

€

3-703-244-00

BUSHING

(2104),

CORD

(JX411:AUS)

2

4-$946-017-01

SPRING,

RING

18

#

3-703-571-11

BUSHING

(S)

(4516),

CORD

(JX411:US,

Canadian,

£)

3

A~4323-885-A

PANEL

ASSY,

FRONT

(JX311:US,

Canadian)

3

A~4323-886-A

PANEL

ASSY,

FRONT

(JX311:E,

AUS)

19

1-569-007-11

ADAPTER,

CONVERSION

2P

(JX411:€)

3

A-4323-888-A

PANEL

ASSY,

FRONT

(JX411:US)

20

#1-638-226-11

CONNECTOR

BOARD

(JX311)

3

A-4323-889-A

PANEL

ASSY,

FRONT

(JX411:E,

AUS)

21

3-704-242-01

SCREW,

TERMINAL,

+

BVTP

CLAW

(JX311)

3

A~4325-040-A

PANEL

ASSY.

FRONT

(JX411:Canadian)

22

4-923~-836-21

CUSHION

(JX411:

Canadian)

4

X-4905-269-1

SHAFT

ASSY,

TUNING

CN501

A\1-540-057-11

OUTLET,

AC

(POLAR)

(AC

OUTLET)

6

4-928-6§35-01

SCREW,

+BV

(2.

6X8)

TAPPING

(JX411:US,

Canadian)

CN501

A\1-540-038-11

OUTLET,

AC

(NONPOLAR)

(1P)

(JX411:€)

9

A-4341-787-A

CONTROL

BOARD,

COMPLETE

(JX411:US)

CN604

1-565-949-11

SOCKET,

CONNECTOR

9P

9

A-4341-788-A

CONTROL

BOARD,

COMPLETE

(JX411:Canadian)

(JX311:US,

Canadian,

E,

AUS)

9

A-4341-789-A

CONTROL

BOARD,

COMPLETE

(JX411:E)

9

&

A-4341-790-A

CONTROL

BOARD,

COMPLETE

(JX411:AUS)

CP1

A

1-551-188-XX

CORD,

POWER

(JX411:£)

CP1

AX

1-558-945-11

CORD,

POWER

(JX411:US,

Canadian)

10

4-917-460-41

KNOB,

POWER

(JX411)

CP1

=

AV

1-559-912-11

CORD,

POWER

(JX411:AUS)

1"

3-704-366-01

SCREW

(CASE)

(M3X8)

FL701

1-519-512-11

INDICATOR

TUBE,

FLUORESCENT

12

4-993-457-01

CASE

Pdi

*

1-580-691-11

JACK,

2P

(JX411)

13

3-318-688-51

FOOT

(F58175S)

(JX411:Canadian)

PT501

A\

1-450-386-11

TRANSFORMER,

POWER

(JX411:AUS,

E)

13

X-4941-228-1

FOOT

ASSY

(JX411:US,

E,

AUS)

PT501

A\

1-450-387-11

TRANSFORMER,

POWER

(JX411:US,

Canadian)

14

&

3-346-265-11

HOLDER,

PC

BOARD

$1

A\

1-572-267-21

SWITCH,

PUSH

(AC

POWER)

(1

KEY)

(JX411)

TMt

*

1-537-264-11

TERMINAL

BOARD

15

*

A-4341-783-A

TUNER

BOARD,

COMPLETE

VS1

AY

1-570-046-21

SWITCH,

VOLTAGE

CHANGE

(JX411:€)

(JX311:US,

Canadian)

15

*

A-4341-793-A

TUNER

BOARD,

COMPLETE

(JX311:E,

AUS)

15

*

A-4341-794-A

TUNER

BOARD,

COMPLETE

(JX411:US,

Canadian)

15

*

A-4341-795-A

TUNER

BOARD,

COMPLETE

(JX411:E,

AUS)

16

*

1-638~-229-11

POWER

BOARD

(JX411)

7

*&

4-943-471-01

PANEL,

BACK

(JX411:US,

Canadian)

Note:

17

&

4-943-471-11

PANEL,

BACK

(JX411:6)

The

components

identi-

Les

Tmerdue

identifiés

par

,

:

fied

by

mark

or

dot-

|

une

marque

sont

critiques

V7

*

4-943~471-21

PANEL,

BACK

(JX411;:AUS)

ted

line

with

mark

A

pour

la

sécurité.

17

*

4-943-472-01

PANEL,

BACK

(JX311:US,

Canadian,

AUS)

are

critical

for

safety.

Ne

tes

remplacer

que

par

une

7

&

4-943-472-11

PANEL,

BACK

(JX311:E)

Replace

only

with

part

|

piéce

portant

le

numéro

spéci-

number

specified.

fié.

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