Sony TR-8460 User manual

TR-8460

SPECIFICATIONS

Circuit

System:

11-transistor

1-diode

superheterodyne

Frequency

Coverage:

108

—

136

MHz

(2.78

—

2.20

Intermediate

Frequency:

10.7

MHz

Antenna

System:

Built-in

telescopic

antenna

Sensitivity

output:

dB)

S/N

Selectivity

+200

kHz

off-resonance:

50dB

122

MHz

—200

kHz

off-resonance:

122

MHz

Power

Output

10%

distortion:

670

maximum:

900

Current

Drain

zero

signal:

10%

distortion:

240

Power

Requirement:

Four

“’D"

size

flashlight

batteries

house

current

using

adaptor

AC-601W

Speaker:

9.2

3/4")

dia.

Dimensions:

268

(W)

140

(H)

(D)

(10

Y2"x

7/2"

16")

Weight:

1.3

02)

with

batteries

SON

SERVICE

MANUAL

Section

Title

Page

Specifications:

...-2

4.4

So.

]

OUTLINE?

1-1.

External

View...

...-.-..2-.4-

1-2.

Internal

View

.....-...-.2-8.

1-3.

Block

Diagram.

.....

2-7-2...

DISASSEMBLY

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

2-1.

Rear

Cabinet

Removal.

.........

2-2.

Circuit

Board

Removal.

.........

2-3.

Cursor

Removal

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

2-4.

Dial

Cord

Stringing

...........

CIRCUIT

ADJUSTMENTS

.........

3-1.

l-f

Alignment

.........-..2.--4-.

3-2.

Frequency

Coverage

and

Tracking

Adjustment...

........2--

MOUNTING

AND

SCHEMATIC

DIAGRAM

............-...5.

4-1.

Mounting

Diagram

Component

Side

4-2.

Mounting

Diagram

—

Conductor

Side

—

4-3.

Schematic

Diagram

....-...

17.

EXPLODED

VIEW

AND

PACKING

5-1.

Exploded

View

(1)

2...

.....-..

5-2.

Exploded

View

(2).

2...

02-0

iat

SS.

PACKINGS

(s,:8

vive.

hae

ELECTRICAL

PARTS

LiST

........

TABLE

CONTENTS

Hardware

Nomenclature

Pan

Head

Screw

...

Flat

Countersunk

Head

Screw

Binding

Head

Screw

Oval

Countersunk

Head

Screw

Truss

Head

Screw

. .

Round

Head

Screw

Type

Slot

P3x

(

—

Example

——-

settee

(=)

s_]

Type

Head

—

Retaining

Ring

Washer)

Length

(L)

Flat

Fillister

Head

Screw

.....

am)

Diameter

(D)

Set

Screw

........

Nut

Tae

—

Washer

Spring

Washer

Lock

Washer

—

When

ordering

replacement

parts,

you

should

use

PART

NUMBER

listed

the

Parts

Lists

shown

the

EXPLODED

VIEW.

The

reference

number

should

not

used

for

ordering

purposes.

SECTION

OUTLINE

4.4

EXTERNAI

JiEW

coe.

EAD

RNAL

VERY

X-38405-85-7

knob

ass'Y,

VOIUING

and

squelch

control

eee

717-501-072

X-38405-84-1

Sena

eemcem

ernie

carrying

handle

assy

—

SQUELCt

;

Veo?

Al.

POWER

REC

OUT

(Yas

Q10

}

AMP

eds

>AV

Exr

power

(la

ATT

pp,

y¥

be]

POWER

AMP

thr

eee

antenna,

telescopic

SECTION

DISASSEMBLY

2-1.

REAR

CABINET

REMOVAL

2-3.

CURSOR

REMOVAL

mai

Loosen

the

screw

marked

Fig.

2-2

and

remove

the

dial

cord

from

the

dial

cord

retainer.

;

two

screw,

tapping

Remove

the

two

@P3x

and

remove

the

dial

scale

Remove

the

cursor.

dial

scale

haiding

case

DIAL

CORD

STRINGI

smove

the

circuit

Prepare

the

Fig.

2-4

—

eapacitor

screw,

tapping

XC)

screw,

tap

leg

“

@P26x8

“

@OP32x6

Fig.

2-2

3-828-820

”

spring,

dial

cord

eee

777

(30

7/32

aceeSES|

acca

aaa

7-633-

120-52

7-623-609

dial

cord

eyelet,

1.5.x

Fig.

2-5

SECTION

CIRCUIT

ADJUSTMENTS

Preparation

Test

Equipments/Tools

Required:

signal

generator

(for

a-m)

VTVM

signal

VTVM

resistor

generator

festiset

earphone

Screwdriver

for

alignment

jack

Preparation:

VTVM

Connection:

‘a

earphone

jack

with

load

resistor

parallel.

pel

eeeeeeeen

sae

hig

Qlresistor

Modulation:

1-kHz

30-%

amplitude-modulated

signal

VOL

Control

Setting:

MAX

Fig.

3-1.

frequency

coverage

and

tracking

SQUELCH

Control

Setting:

OFF

adjustment

setup

3-1.

ALIGNMENT

Signal

Generator

Frequency

10.7

MHz

kHz

30%

a-m)

Signal

Generator

Coupling

VTVM

Connection

See

Fig.

3-1

and

Fig.

3-2

Earphone

jack

with

load

resistor

parallel

Remarks

VOL

control

SQUELCH

control

MAX

OFF

Adjust

for

maximum

meter

reading.

3-2.

FREQUENCY

COVERAGE

AND

TRACKING

ADJUSTMENT

Signal

Receiver

Adjustment

Generator

Dial

Adjust

Remarks

Coupling

Frequency

Setting

Frequency

See

Fig.

3-2

107.0

MHz

Fully

osc

coil

Adjust

for

maximum

meter

Coverage

left

reading.

VOL

control

>MAX

137.5

SQUELCH

control:

OFF

trimmer

CT2

Tracking

108

MHz

Tune

coil

108

MHz

LE?

signal

136

MHz

Tune

trimmer

136

MHz

signal

from

Signal

generator

trimmer

osc

coil

osc

trimmer

CT2

cT1

coil

MFT

IFT

SECTION

MOUNTING

AND

SCHEMATIC

DIAGRAM

MOUNTING

DIAGRAM

—

Component

Side

—

SGG1S1

4-1.

E8EEST

410

010

G9ELGStT

8D0'LO

100

GAN

189

22'0

aod

FEOVIST

“90

‘vO

WIL

IOEEISE

€0

OL89SE

Ollose

20°10

-8460

4-2.

MOUNTING

DIAGRAM

—

Conductor

Side

—

LL-G9L-L8S-L

“ON

24eq

‘pseog

NID

payulig

SWMIOA

HO13N0S

ANV

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10°0

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SSS

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4070

beeen

sodb.a,

3ZIS

Live

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yuge

———

rage

Yy3MOd

ix3a

SNOHdYv3a

SCHEMATIC

DIAGRAM

43.

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1x3

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(HOS

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-8460

SECTION

EXPLODED

VIEW

AND

PACKING

5-1.

EXPLODED

VIEW

(1)

Parts

marked

are

included

carrying

handle

ass’y

(X-38405-84-1)

3-835-432

arm,

carrying

handle

3-835-431

carrying

handle

Parts

marked

are

included

battery

lid

ass’y

(X-38405-87-1)

Parts

marked

are

included

rear

cabinet

ass’y

(X-38405-89-1)

3-840-504

Parts

marked

are

included

main

cabinet

ass’y

(X-38405-88-

Fees

von

vids

neath

cabinet

ass’y

(

5-8

8-1)

‘

3-840-515

3-836-433

sash

7-685-234-21

spacer,

carrying

handle

7-685-134-21

screw,tapping

2.6

screw,

tapping

P2.6x

7-623-107-15

washer,

2.6

3-840-506

fiber

washer

7-623-639

eyelet

4x5

443-835-460

cushion,

100

10x

a3-835-401

cabinet,

main

1-502-183

speaker

3-804-510

retainer,

speaker

7-623-508-01

lug

3-835-443

7-621-722-46

_-4

“oe

battery

negative

3-835-446

ornamental

plate,

front

screw,

tapping

1-507-050-51

jack,

earphone

1-507-261-11

fack,

ext

power

7-633-120-52

dial

cord,

0.25

7-685-134-27

screw,

tapping

®P2E6x8

113-822-524

label,

caution

7-684-035-01

nut

7-623-212-12

spring

washer

3-811-538

(213-835-462

cushion

Battery

tape

terminal

plate,

antenna

AIR

(139-835-411

rear

cabinet

(

3-835-412

SSS

ene

3-840-505

cushion

220

(13-835-461

O3-840-531

cushion

spacer,

battery

cover

)3-840-510

plate,

specification

(|3-835-466

cushion,

battery

cushion

scents

gx42

(J3-835-466

3-835-467

cushion

washer,

telescopic

antenna

(17-621-255-52

1-601-072

screw

O®P2x8

antenna,

telescopic

(353-823-309

antenna

catch

—10—

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