Matsushita electric Rf-973b User manual

ORDER

NO.

RD-952

-FM-AM

FM

STEREO

PORTABLE

RADIO

move.

RF-973B

*

This

service

manual

includes

only

the

changes

of

the

RF-973

service

manual

(ORDER

NO.

RD-946)

except

for

Parts

List.

*

This

manual

should

be

filed

with

the

service

manual

for

model

RF-973

(ORDER

NO.

RD-946).

|

*

When

servicing

model

RF-973B,

this

service

manual

and

the

RF-973

service

manual

should

be

used

together.

gi;

REPLACEMENT

PARTS

LIST

(MODEL

RF-973B)

Please

use

this

part

number

for

parts

orders.

—

:

;

aR

ecoa

Mindicates

the

New

Parts.

R48,

58

EVKC2AL20D14

|

10KQ

(D),

Volume

Control

1

te

OR

X—Z

rank:

X

rank

parts

will

cover

80%

of

repair

needs.

R30

EVLTOAAOOBS3

|

5KQ

(B),

Separation

Control

1

x

VARIABLE

CAPACITOR

X+Y

rank

parts

will

cover

95%

of

repair

needs.

Z

rank

parts

are

less

necessary.

C6,

14,

17,

20

Roche

[Porit

]

_Omerpon

PES]

=

-

COMPONENT

COMBINATIONS

INTEGRATED

CIRCUIT,

TRANSISTORS

AND

DIODES

EXAS5DLO4C

330PF

X3,

4.7KQ

X2

RXABPF10801C|

Coils

&

Capacitors

-

RXAF103P22HD]|

0.01

nF

x2

|

SWITCHES

M1

M2

(F

Amplifier

FM

RF

Amplifier

FM

Converter

&

AM

Oscillator

FM

IF

Amplifier

&

AM

Mixer

Distributor,

Eye

Switching,

Matrix

Amplifier,

Regulator,

Pre

Amplifier,

AF

Amplifier

AN253

|

280921

2801359

2SC829

280828

><

KOK

OK

Band

Seleclitor

Switch

Tone

Switch

Power

Source

Switch

S$1-1~S1-4}

RSH45B-A

§$2-1,

S2-2

|

RSS78A

RSS77A

2SA666

38kHz

Amplifier

X

280945

AF

Amplifier

xX

2SD227

Power

Amplifier

X

SPEAKERS

|

2SA642

Power

Amplifier

x

_

:

>

RVDKB

26533

Stabilizer

xX

EASIOP75SL

10cm

(4”)

PM

Dynamic

SPE

™®

X

RVDSC-15

FM

AFC

X

ae

OA9O

FM

AGC,

AM

Detector

&

AGC

x

2-0A90

FM

Detector,

Doubler,

(L-R)

x

ota

ane

Detector

PRYMRF973B8XG

|

Cabinet

Body

(Complete)

RVDVD1210

Operation

Compensator

x

CA1

|)

ARKM190B)

Cabinet

Body

(Not

Available

Order

LN12

Stereo

Eye

®

X

;

RY

MRF

973BXG)

1S1211

Operation

Compensator

X

i

|

RJS34A-X

Connecting

Socket

2

Zz

CA2

|

RKH47A

Handle,

Cabinet

1

@Y

CA3

RKT46A

Metal

Fitting,

Handle

2

Y

ee

XTW3D10B

Screw,

Handie

M'tg

-

2

zZ

AYDIORY

er

ee

ec

CA4

RNW1020

Washer,

Handle

M’tg

4

Z

CA5

|

RGB350

Badge,

NATIONAL

PANASONIC

Mark

1.

Zz

COILS

AND

TRANSFORMERS

CAG

|

|RGK294D

Indicating

Plate,

(©

Mark

1

|

@z

RLE53

FM

Detector

&

Oscillator

Coil

1

®

x

CA7

|

RGK

364A

Indicating

Piate,

Volume

&

be

ay

1

®

Zz

75S2-0

h

il

Deo

neO

ni

vie

ieee

‘

:

CA8

RGK325B

Indicating

Plate,

Cabinet

Front

1

|

@z

RLE2D94

AM

Antenna

Coil

1

x

CAQ

RGK326A

Indicating

Plate,

Cabinet

Front

1

®Z

RLM1X1-Y

Choke

Coil

2

Y

CA10

RGK297B

Indicating

Plate,

Power

Mark

1

®

Z

RLQY

25S5-0

Choke

Coil

1

Y

CA12

RGX387A

Ornament,

Panel

1

®

Zz

RL!14B153-M

Ist

FM

IF

Transformer

1

xX

CA13

RGX403A

Ornament,

Cabinet

Right

Side

1

eo)

z

RL

17W1050-T

1st

AM

IF

Transformer

1

xX

CA14

RGX404A

Ornament,

Cabinet

Left

Side

1

®

Z

RL14B251

2nd

FM

IF

Transformer

1

X

pRYFRF973BXG

|

Cover

(Complete),

Cabinet

Back

1

@®

X

RiL12B4500-M_

|

2nd

AM

IF

Transformer

1

X

CA15

1

((RKF129C)

Cover

Only,

Cabinet

Back

(Not.

RL14B510

3rd

EN

IF

Transformer

(Primary)

1

x

CAI6

RIS34A-X

Ceo

er

,

=

*4B5

3

M

af

f

S

1

!

.

Boo

vie

ae

ee

cine

ioeronsOy

|)

2.

:

CA17

|

RJK2402E

Case,

Battery

(With

Terminals)

|

4

@Y

RLM1

C5-K

MPX

Coil

1

x

;

XTW3D10B

Screw,

Case

M’

tg

2

Zz

RLT5H104-V

Power

Transformer

1

®

X

CA18

oo

neh

ee

M'tg

:

©

.

S

P

:

BE

CE

TQS

1268.

|

Ceramle

Fer.

:

CA19

RMA5022B

Bracket

(Plastic),

Whip

Antenna

1

Zz

VARIABLE

RESISTORS

CA20

RKK58A

Cover,

Battery

Compartment

|

1

®

xX

CA21

XEARCR217EAS|

Whip

Antenna

1

xX

RVVHC20B54-A

|

50K

(B),

Stereo

Spacer

Control,

I

®)

X

CA22

RMA88A

Bracket

(Metal),

Whip

Antenna’

1

z

hee

Sik

W/STEREO-MONO

Selector

Switch

RMS14A

Bracket,

Speaker

2

WZ

“MATSUSHITA

ELECTRIC

MATSUSHITA

ELECTRIC

TRADING

CO.,

LTD.

raion

P.

O.

Box

288,

Central

Osaka,

Japan

YDRF.973BXG.

*

Resistors

and

Capacitors,

reter

to

part

list

model

RF-973B.

CHANGES

.

Description

Remarks

|

Ref.

No.

Part

No.

Pos)

RBNI41A

“Knob,

Volume:

&°SE

Control

2

Ni

X

eee

ob

RUSS2ZA-X

Connecting

Socket;

Whip

Antenna

vie

RBN142A

Knob,.

Tuning

2°

1

NX

vines

SE

RIS30B

Jack,

EXT.

Power

Source

=

XSB3+30BNS

Sérew,

Cabinet.

Cover

M'

tg

3:

QD

Yeon

be|

OREESE

cEfERMC181A

|

Shield

Cover,

EXT.

Power

Jack.

.

fie

XYN3DF8S

~~

|

Screw,

Whip

Antenna

M'tg:

>>

“Poo

sfees

Zoe

de)

CHA

E

RMA346

“|

Bracket,

Core

Antenna

0

|e

(oe

|

RIS79>

os

oa

[

Jack.

Headphone:

280

es

LAT

Xe

PL

CABs

55

RHG@109

-

|-Rubber,

Core

Antenna’M'tg

9

me

“she

RUC44A

0

25500").

Bracket,

Headphone

Jack

eee

Zee:

soe

1

ROER2O

22S

):-Pulley,

Diab

ss

8

—

EER

TCE

as

ene

=

eee

elt

RNW230A

"E:Washer,

Pulley

:M’tg

©

7

wos

eS

CHASSIS.

o:

RNW150-2

CH1

ne

(Gj

Dial’

Scale

Assembly.

0-0

RDZO5-3

Cord,.

Dial

‘|

4

Rolk:

CHIS

ee

(RKDTSOB)

|

Sealeiee

y

cole

Mie

yae

ne

one

EAB

USE

‘|

(5001

CH1-2

(RUB58A)

Cam

RDT2201B

Shaft,

Tuning

CH1-3

|

||

(RUL183AS)....}

Bracket...

|.

#

1

CH10

1

RDD302C-

AU

BruntDiak

ees

sg

aicegeatienpes

CH1-4

|

(RUL184A)

Bracket

XSN2+4

Screw,

Tone

&

Power

Switch

M'tg

CH1-6

|

(RUSTO6A)

Spring

|

XYN26DC6

Screw,

Drum

M'tg

CH1-7

\

(RDD9OOSA)

Drum

i

|

XTN3D6F

Screw,

Lever

Assembly

M’tg

CH1-8

|

|(RDF92OAS)

|

Shaft.

|

SO.

Rie

eet

eee

[see

oe

LXNS7E

S|

Nut,

Volume

&

Tuning

Shaft

M'tg

coe

,

Deus).

‘Soe

Does

Cince

Rvalabla

cep

ST

XWV7

eo)

Washer,

Volume

&

Tuning

Shaft.M’

tg

-

crew

: :

i

:

r

j

J

cH1-11

|!

|

&TN23D88)

|

Screw

ev

anrersexe

ee

au

Peek

Risa

Sete:

Chass

M18

CH1-12

(XNG4BS)

Nut

sat

os

ee

ACCESSORY

CH1-13

(XWG2X

6BW)

|

Washer

ead

T

CH1-15

(RHD650AS)

Stay

Shaft

ey

——

CH1-16

(RHR9O37A)

Pulley

|

PACKING

CH1-17

(RHR9O3Q9A)

Pulley

CH1-18

(RHP

618A)

Sheet

1

Pd

RPP80A

Polyethylene

Cover

1

®Z

CH1-19

-|/(XTN3D6B)

~~}

Screw

P2

...|

RPN162A

|

Upper

Pad...

fea

tedn

7

2

CH1-20

(RHP622A)

Sheet

P3

RPN1217A

Bottom

Pad

1

NM

Z

CH2 ASE

132A

Lever

Assembly,

Band

Selector

1

NX

P4

RPK220A

Gift

Box

1

®

Y

aad

a

P5

|

REF

3A

Polyethylene

Bag,

AC

Cord

1

Zz

CH3

RJJ51A

|

Jack,

REC

OUT

(R—L)

1

X

P6

|

RQX5461A

Instruction

Book

1

MY

RJS34A-X

'

Connecting

Socket

1

4

Zz

7

|

RPH163A

Soft

Sheet

1

®

Z

|

Washer,

Pulley

M'tg

RDS4060A

=

BUNNINNAAQDA

0

wNNosto

<NNNNNNX<

<

=

<<NNNNNNXN

M@

SPECIFICATIONS

Power

Source:

AC

120V

60

Hz

or

6V

(Four

‘‘C”’

Size

Flashlight

Batteries)

(PANASONIC

UM-2

or

equivalent)

Power

Consumption:

4.5

W

at

120V

(AC

Only)

AC

220~240V

50-60

Hz

or

6V

(Four

‘‘C’’

Size

Flashlight

Batteries)

(NATIONAL

UM-2.

or

equivalent)

4.5W

at

230V

(AC

Only)

Speakers:

Two

4’

PM

Dynamic

Speaker

en

Two

10

cm

(4’)

PM

Dynamic

Speaker

Dimensions:

11%"

(Wide)

x

59’

(High)

x

2%’

(Deep)

282(Wide)

x

142(High)

x

72(Deep)

mm

|

(114°

x59"

x27%"’)

Weight:

4

|b.

with

batteries

1.6

kg.

(3

Ib.

8.4

oz.)

without

batteries

(Model

RF-973)

Mi

ALIGNMENT

INSTRUCTIONS

(Model

RF-973B)

FM-RF

ALIGNMENT

Connect

to

point

TP:

Output

meter

La

(FM

OSC

Coil)

|

(,)

through

FM

Dummy

90

MHz

Adjust

for

maxi-

1}

antenna,

Common

to

90

MHz

(Fig.

3)

sae

oka

ET

mum

output.

chassis

(Refer

to

fig.

7)

voice

coil.

Li

(FM

DET

Coil)

Sahai

Cis

ee

(x)

Adjust

for

max-

z

rimmer

imum

output.

(7)

G

106

MHz

(Fig.

4)

it

Cs

(FM

DET

Repeat

steps

(6)

Trimmer)

and

(7).

(*)

Three

output

responses

will

be

present:

proper

tuning

is

the

center

frequency.

(Model

RF-973)

eee

rere

ener

reer

eer

reece

eee

eer

reese

——————

FM-RF

ALIGNMENT

Connect

to

point

TP:

through

FM

Dummy

Tuning

gang

Output

meter

(x)

Adjust

for

maxi-

(6)|

antenna,

Common

to

87.2MHz

|

fully

closed.

|

across

voice

coil.

|

/¢

(FM

OSC

Coll)

mum

output.

chassis.

(Refer

to

fig.

7)

(7)

i

90

MHz

Tune

to

Signal

7

L1

(FM

DET

Coil)

|

(*)

ee

4106

MHz

Cre

ie

eee

Adjust

for

maximum

Trimmer)

Repeat

steps

(6)~(8).

(*)

Three

output

responses

will

be

present:

proper

tuning

is

the

center

frequency.

_~

(Model

RF-973B)

721161R®

Printed

in

Japan

FM.

AM

FM

STEREO

PORTABLE

RADIO.

move.

RF-973

|

ene

ceieione

Frequency

Range:

Intermediate

Frequency:

Sensitivity:

Power

Output:

Power

Source:

Power

idl

ant

FM

87.5~108

MHz

|

AM

525-~1605

kHz

FM

10.7

MHz

AM

455

kHz

FM

1zV

for

50mW

Output

AM

50vV/m

for

50mW

Output

750mW

x2

Maximum

AC

120V

60

Hz

or

6V

(Four

“C’’

Size

Flashlight

Batteries)

(PANASONIC

UM-2

or

equivalent)

4.5W

at

120V

(AC

Only)

Speakers:

-

Two.4”

PM

Dynamic

Speaker

Dimensions:

-4436"(Wide)

x

5%"

(High)

x

2%"

(Deep)

—

Weight:

4

Ib.

with

batteries

Impedance:

Speaker

--

:

-

80

Recording

‘Out

Jack-~

10ka

Headphone

Jack-------------80

Mm

TO

REMOVE

CHASSIS

1.

Remove

three

(3)

control

knobs

from

cabinet.

Screw

No.1

Screw

No.2

Screw

No.3

2.

Remove

three

(3)

cover

screws,

nos

1~3,

as

illustrated

in

fig.

1.

3.

Remove

cabinet

cover.

|

4.

Pull

out

three

(3)sockets

to

cabinet

cover,

as

illustrated

in

fig.

2.

|

5.

Pull

out

five

(5)

sockets

to

cabinet,

as

illustrated

in

fig.

2.

6.

Remove

four

(4)

red

chassis

screws,

nos.

1~4,

as

illus-

trated

in

fig.

3.

7.

To

remove

chassis

completely,

unsolder

leadwire

to

-

gpeaker

bracket.

8.

To

reassemble,

reverse

the

above

procedure.

To

Cabinet

Cover

Red

Sky

Blue

To

Stereo

Eye

To

Headphone

Jack

Fig.

2

MATSUSHITA

ELECTRIC

CORP.

OF

AMERICA

MATSUSHITA

ELECTRIC

OF

HAWAII,

INC.

MATSUSHITA

ELECTRIC

OF

CANADA

LTD.

ORDER

NO.

RD-946

apen

30BNS)

(XSB3+30BNS)

Red

Screw

No.1

Red

Screw

No.2

(XTN3D8BR).

(XTN3D8BR)

|

Red

Screw

No.3

(XTN3D8BR)

Red

Screw

No.4

(XTN3D8BR)

Fig.

3

Pan-Am

Bldg.,

200

Park

Ave.

New

York,

N.Y.

10017

320,

Waiakamilo

Road

Honolulu,

Hawai

96817

40

Ronson

Drive,

Rexdale,

Ont.

TO

REMOVE

DIAL

SCALE

ASSEMBLY

’

1.

Remove

chassis

from

cabinet.

:

2.

Remove

scale

assembly

screw,

as

illustrated

in

fig.

1.

8.

Set

the

lever

at

the

position

as

illustrated

in

fig.

2.

“4.

Insert

the

|

_

+

To

Reassemble

Dial

Scale

Assembly

~

1.

Set

tuning

gang

to

maximum

capacity.

ne

-

fig.

2:

:

;

3.

Screw

the

two

(2)

dial

scale

screws,

as

illustrated

ins

Screw

|

(XYN3DF6S)

2.

Loosen

two

(2)

dial

scale

screws,

-as

illustrated

in

ever

in

the

hole

of

dial

drum

as

illustrated

5.

Screw

the

dial

scale

assembly

to

chassis

as

illustrated

in

fig.

1.

|

-To

Mount

Dial

Scale

9

1.

Fix

the

dial

scale

drum,

as

illustrated

in

fig.

3.

9.

>

2.

Set

the

start

point

of

dial

scale

to

the

mark

of

chassis.

FMS7S~10eWHe

88

«2?

SCALE

———

0

mm

|

ae

2

fig.

2.

Start

Point

Fig.

1

“4@._

Screw

L—

(xTN3D68)

es

a=

<7

~Sheet

-

Dial

Scale

Assembly

|

_&

age

SAPROISA)

Fig.

2

M

DIAL

CORD

INSTALLATION

GUIDE

—

RF-973

RON

H

Remove

dial

scale

from

chassis.

Dial

cord

length

is

37%".

~

Set

tuning

gang

to

minimum

capacity.

|

4—

)

Vp.

tT

Tuning

Arrows

(1-~8)

indicate

correct

order

and

en

/y

Gang

direction

of

installation

dial

cord.

(CHo)

Cement

dial

cord

ends.

Fashion

loop

of

4

|

several

turns

of

wire

208

KHz

interference.

Output

meter

T2

(1st

IFT)

Adjust

for

maximum

and

radiate

signal

30%

Mod.

(on/about

she

ace

~

output

into

loop

of

pecclvek!

with

400

Hz.

|

(600

kHz

voice

coil.

Ta

(2nd

IFT)

|

copes

| :

Adjust

for

maximum

Ww

550

kHz

Ls

(OSC

Coil)

output.

Adjust

Ls

by

:

| |

(*)

Ls

(ANT

Coil)

moving

coil

bobbin

|

.

|

along

ferrite

core.

ks,

ae

|

Adjust

for

|

3

ie

1500

kHz

1500

KHz

maximum

output...

Notes:

ALIGNMENT

INSTRUCTIONS

—__

Fs

aceon

|

SAREFULLY

BEFORE

ATTEMPTING

ALIGNMENT

READ

CAR

.

Set

volume

control

to

maximum.

.

Settone

switch

totreble.

_

Set

band

selector

switch

to

AM

or

FM.

.

Set

stereo

spacer

control

to

MONO.

.

Set

power

source

switch

to

ON.

.

Set

power

source

voltage

to

6

volts

DC.

.

Output

of

signal

generator

should

be

no

higher

th

SIGNAL

GENERATOR

or

|

.

ld

RADIO

DIAL

SWEEP

GENERATOR

SETTING

(DISTANCE)

NO

Oh

OND

-

an

necessary

to

obtain

an

output

reading.

_

INDICATOR

(VTVM

or

SGOPE)|

ADJUSTMENT

REMARKS

Point

of

non-

(Fig.

2)

*

Gement

antenna

bobbin

with

wax

after

completing

alignment.

Repeat

steps

(2)

and

(3).

placer

;

amp.

of

scope

to

amplitude

and

proper

4[

Eso

pole

soz

ie

|

Ifertrance.

|

SOB:

SherePe"?

|

TEM

angie

|

nary

between

at

ie

SWP.)

100

MHz)

Common

to

(Primary)

+100

kHz

markers.

chassis.

y

(Refer

to

fig.

5)

~]

High

side

thru.

Connect

to

point

TP:

through

FM

Dummy

antenna,

Common

to_

chassis

(Refer

to

fig.

7)

Connect

vert.

Adjust

for

maximum

|

Point

of

non-

T:

(FM

1st

IFT)

Connect

vert.

amp.

of

scope

to

point

TPs.

Common

to

chassis.

Adjust

Tes

so

that

10.7

MHz

marker

appears

at

the

center.

(Refer

to

fig.

6)

:

Te

(FM

3rd

IFT)

(Secondary)

Output

meter

across

voice

coil.

La

(FM

OSC

Coil)

L1

(FM

DET

Coil)

(

*

)

Adjust

for

maxi-

mum

output.

Cis

(FM

OSC

Trimmer)

Cs

(FM

DET

Trimmer)

(

*

)

Adjust

for

max-

imum

output.

Repeat

steps

(6)

and

(7).

*

Three

output

responses

will

be

present:

proper

tuning

is

the

center

frequency.

AMANT

FMOSC

|FMOSC

FM

ist

an

fan

"BOOK

B50KHz

106MHz

90MHz

10.7MHz

|

Cis}

‘[cis|

ITT

aN

Ts

NE

[al

aike.

(P)

AM

0SC

FM

3rd

AM

2nd

550kHz

10.7MHz

455kHz

*

SoMie

S)

FIZ

3

|

Separation

Sal

©

|

8)

|

©|

ree

|S

;

MPX

Coil

5..

MPX

Coil

(S)

(

QTPo

(7

3rd

Te

Alignment

Points

RF-973

(SG

mp.500

)

--*

Stereo

Modulator

*

Signal

Generator

—

*

Oscilloscope

*VIVM

~*

Dummy

Antenna

*

Low

Pass

Filter

CONTROL

SETTING

Set

tuning

gang

NOOR

ON

Connect

to

TP1

through

dummy

antenna.

Fig.

5.

To

SG

To

Receiver

—

Fig.

7

FM

Dummy

Antenna

RF-973

~

EQUIPMENT

REQUIRED

.

Set

volume

control

to

audible

level

of

speaker

sound.

|

EQUIPMENT

CONNECTIONS

“SIGNAL

GENERATOR

VTVM

ee

Modulation

Rate

of

19

kHz

Pilot

Signal......10%.

Connect

Stereo

Modulator

output

to

EXT.

Mod.

terminal

of

signal

generator.

Modulation

Rate

by

L+R

Signal......

27%

(Alignment

Step

3)

.

_....

Output

Level......30

dB

or

60

dB

(Alignment

Step

_

Frequency.........Approximately

98

MHZ

~

Note:

When

align

&

PROCEDURE

©

1.

Set

band

selector

switch

to

FM.

|

.

Set

stereo

spacer

control

to

STEREO.

._

Settone

switchtotreble.

=

|.

©

Set

power

source

switch

toON.

Set

power

source

voltage

to

6

volts

DC.

to

approximately

98

MHz.

OSCILLOSCOPE

Connect

vert.

amp.

of

scope

to

point

TPs.

Common

to

chassis.

ADJUSTMENT

PILOT

CIRCUIT

ALIGNMENT

_

Beg

(MPX

Coil)

2&3)

.

*

eae

Ye.

ing,

set

Rao

as

illustrated

in

figure

Ee

ls

R30

5ka

REMARKS

Adjust

T7

for

maximum

Connect

across

speaker

voice

coil

of

left.

Connect

to

terminals

of

VTVM.

SEPARATION

ALIGNMENT

R30

Ts

(MPX

Coil)

(Separation

Control)

modulated.

is

modulated.

oscilloscope

pattern

of

19

kHz.

Adjust

Ts

for

the

maximum

indication

on

VTVM

from

the

left

side

output

when

the

left

side

of

Stereo

modulator

is

Adjust

R3o

for

the

minimum

indication

on

VTVM

from

the

left

side

output

when

the

right

side

of

Stereo

modulator

_

Schematic

Diagram

-

Model

RF-973

TR3

asteng

TR

TRi2

Dit

2sc921

RVDKB265J3

2801359

AVDSD-15

OA

280828

2Sc828

280945

AVDVOI210

280227

2sned2

RF-973

‘FM

RF

AMP

STABILIZER

FM

CONV

or

AM

OSC

FM

AFC.

FM

AGC

_..

FM

IF

AMP

or

AM

MIX

|

PRE

AMP

C8)

Mo.022

AF

AMP

AF

AMP

AOC

POWER

AMP

POWER

AMP

oo

|

cay

4

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|

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CnC5p

Cato

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—

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TP)

|

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Vedat

ran

|

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TS;

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DET

MATRIX

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46

f

Positive

Voltage

Line

ee

Notes

oe

ee

.

ge

ais

&

ERMEEEGE

Ncoatve

Voltage

Line

?

1.

Si-1~Si-4:

Band

selector

switch

in

“FM”

position.

6.

DC

voltage

measurements

are

taken

with

circuit

tester

.

3

2.

Sa-4—S2-2:

Tone

switch

in

“TREBLE”

position.

10Ko/V

from

negative

terminal

of

battery.

|

_

3.

Ss.

:-:

Power

source

switch

in

‘OFF’

position.

ao.

Lacan

Lea

position

4.

Sa

AC-Battery

selector

switch

in

‘Battery’

Gm

perenne

Stone

position.

7.

Battery

current:

No

signal..................

35mMA

5.

Ss

Stereo

spacer

selector

switch

in

“STEREO”

Maximum

output

......300mA

position.

(61

4IZB

121

109

BOTTOM

VIEW

Circuit

Board

Wiring

View-Model

RF-973

|

SE

CONTROL

a

:

Pa

Te

2S

See

—

Fee

oe

GO

SE

Soe

tT

|

aan

i

el

las

_

RECORDING

OUT

JACK

~~

(RIGHT)

(LEFT)

as

<

°

<

=]

6)

°

ro)

<

°

®

<

ev

av

11]

1.3V

12[

1.5V

13

14

TR4

[rene]

|

Pe

[aay

|

Pe

[ima]

[rere]

pap

sav

6

ar

iff]

BATTERY

Pp:

TR7

R

[Sree]

Pe

[or

|

fie

[oma

|

4"

PM

DYNAMIC

SPEAKER

TERMINAL

Goa

a

EXT

POWER

SOURCE

JACK

W/AC-LC

SELECTOR

SWITCH

4°

PM

DYNAMIC

SPEAKER

TERMINAL

(RIGHT)

(82).

|

(82)

|

HEAD

PHONE

JACK

:

TR

:

Da

Ds

IC

De

D3

TR2

D1

Do

TRa

Da

Dg

D7

TR

TRs

Da

Dio

TRé

TR7

TR

Dn

Tris

TR

TRi2Delki

Thin

Tkie

Rio

TRIG

TRIS.

ee

Te

Tele

le

15

43

Hoge.

te

be,

Ee

Te

be

Negative

Voltage

Line

Positive

Voltage

Line

-

TONE

CONTROL

Ls

AM

ANTENNA

COIL

sails

eee

|

eh

48,

58

10K

(D).

TR

oe

(VOLUME

CONTROL

RF-973

i

o

Part

No.-

Description

Hi

CHASSIS

PARTS

LOCATIONS

-P

ae

6.

Y

:

R1

46,5059,

10KQ,

Watt,

Carbon

COMPONENT

COMBINATIONS

6

,

.

:

R22,51,60

15KQ,

Watt,

Carbon

M1

EXAS5DLO04C

330PF

X3,4.7KN

X2

1

Y

R23,64

22KQ,

Watt,

Carbon

M2

RXABPF10801C

|

Coils

&

Capacitors

1

Y

R9,53

-|133KQ,:

Watt,

Carbon

100KQ,

Watt,

Carbon

SWITCHES

CHs

CH4

CH3

CHa

Bees

4700,

JWatt,

Carbon

ere

680K,

Watt,

Carbon

390KQ,.

Watt,

Carbon:

470KQ,

}Watt,

Carbon:

560K,

Watt,

Carbon

5.6KQ,

Watt,

Carbon

RSH45B-A

Band

Selector

Switch

Tone

Switch

Power

Source

Switch

.

SPEAKERS

|

_

|

RSS78A

|RSS77A

@@9@

*

><

Hi

ACCESSORIES

&

PACKING

PARTS

LOCATIONS

Mi

REPLACEMENT

PARTS

LIST

1.

Part

numbers

are

indicated

on

most.

mechanical

parts.

NOTES:

R35

RVVHC20B54-A

R48,58

RVVKA20D14-B

R30

ECKE1H103PF

ECMS05150K-H

C10,21,79

C24

C36

C33,37

C83

C23,38

C56,57,58,66

C30

ra

al

ECQG05223MZ-N

ECQG05333MZ-N

ECAGI6ER1-Y

ECAG16ER47-Y

ECEA6V33

ECEA6V47_

ECEA6V100

ECEA25V4R7

C26,39,41,42,

|ECEAS5OV1

43,44,

50,60,

46,49

1000,

Watt,

Carbon

2200,.

KWatt,

Carbon

3900,

Watt,

Carbon

1KQ,

-

Watt,

Carbon

2.2K0,

Watt,

22KQ,

Watt,

33KQ,

Watt,

2.7KQ,

wWatt,

4.7KQ,

Watt,

VARIABLE

RESISTORS

50K

(B),

Stereo

Spacer

Control,

W/STEREO-MONO

Selector

Switch

Carbon

10KQ(D),

Volume

Control

EVLTOAAOOBS3

|

5K

(B),

Separation

Control

CAPACITORS

4mmf,

5mmf,:

330mmf,

0.01

mfd,

15mmf,

10mmf,

12mmf,

18mmf,

22mmf,

0.01

mfd,

0.022mfd,

820mmf,

-{|1500mmf,

1000mmnf,

0.001

5mfd,

|

0.01

mfd,

0.047mfd,

0.022mfd,

0.033mfd,

0.1mfd;.

-

0.47mfd,

—

33mfd,

47mfd,

100mfd,

_

220mfd,

470mfd,

1000mfd,

470mfd,

1Omfd,

4.7mfd,

1mfd,

50WV,

5OwWV,

5OWV,

50WV,

5OWV,

50WV,

5OWV,

50WV,

5OWV,

50WV,

5OWV,

50WV,

5OWV,

50WV,

BOW,

16WV,

TEWV,

6.3WV,.

-6.3WV,

6.3WV,

6.3WV,.

6.3WV,

TOWV,

1OWV,

16WV,

25WV,

50WV,

Ceramic

Mica

Miea

Mica

Ceramic

Styrol

Polyester

E

tectrolytic

Electrolytic

-

Electrolytic

.

Electrolytic

E

tectrolytic

E

fectrolytic

Electrolytic

VARIABLE

CAPACITOR

P3

C6,14,17,20

|PVC2LX20T3MG

|

Tuning

Gang,

W/Trimmer

(C5,

15,

18,

19)

Poe

P5

|

P6

“<<<<<«<<<<<<N

NNNNNNNNNNNNNNNNNN

“<<<

<<<

«<<

<<

«KKK

KKK

<<

RDD9005A

RDF920AS

®

X

RDG5617A

XSN3D6S

®

X

XTN23D8B

xXx:

.

XNG4BS

XWG2

x6BW

|

XWA4B

RHD650AS

RHR937A

_

RHR939A

RHP618A

XTN3D6B

RHP622A

RHP620

RSE13A

RJJ51A

RJS34A-X

RJS32A-X

RJJ29A

RMC181A

RMA346

RHG109

RDR2O

RNW230A

RNW150-2

RDS4060A

RDZ05-3

RDOT2201B

RDD302C

XSN2+44

XSN26D4

XYN26DC6

XTN3D6F

XNS7

XWV7

XTN3D8BR

RJA22A

UM2DE

(P)

RPP80A

RPN1I162A

P3

RPN1163A

RPG832A

RPF3A

RQX5445A

CABINET

Dial

Scale

Assembly

Scale

Cam

Bracket

Spring

Drum

Shaft

Gear

Order

RYDRF973M

|

Screw

Nut

Washer

Stay

Shaft

Pulley

Sheet

Screw

Sheet

‘Sheet

Lever

Assembly,

Band

Selector

Switch

Jack,

REC

OUT

(R—L)

Conecting

Socket

Conecting

Socket,

Whip

Antenna

Jack,

EXT.

Power

Source

Shield

Cover,

EXT.

Power

Jack

Bracket,

Core

Antenna

Rubber,

Core

Antenna

Pulley,

Dial

Washer

ras

Pulley

M’tg

Washer

(Large),

Pulley

M’tg

Spring,

Dial

Cord,

Dial

Shaft,

Tuning

Drum,

Dial:

Screw,

Tone

&

Power

Switch

M’tg

Screw,

Tuning

Gang

M’tg

Screw,

Drum

M’tg

Screw,

Lever

Assembly

M’tg

Nut,

Volume

&

Tuning

Shaft

M’tg

Washer,

Volume

&

Tuning

Shaft

M’tg

Red

Screw,

Chassis

M’tg

ACCESSORIES

AC

Cord,

EXT.

Power

Source

Battery

Polyethylene

Cover

Upper

Pad

Bottom

Pad

Packing

Case

Polyethylene

Bag,

AC

Cord

Instruction

Book

Description

oh

Fat

PNM

-ND——$

Dw

H-

Onn]

HH

dH

HM

BSN

AHN

HM

BM

He

N

HPP

ee ee

2

—

ee es

ws

ee

@

@8@ee@

<NNNNN

SP1,2

EAS10P75SL___-|4”

PM

Dynamic

Speaker,

Imp.

80

<NNNNNN

<<<<NNNNNNONN

XX

Please

use

this

part

number

for

parts

orders.

2.

@

indicates

the

New

Parts.

:

3.X—Z

rank:

X

rank

parts

will

cover

80%

of

repair

needs.

X+Y

rank

parts

will

cover

95%

of

repair

needs.

Z

rank

parts

are

less

necessary.

L2

1

Y¥

RLQY75S2-0

Choke

Coil

RLO2B90-M

AM

Oscillator

Coil

RLF2D94

AM

Antenna

Coil

RLM1X1-Y

Choke

Coil

RLQY10G5-0

Choke

Coil

RLQY25S5-0

!

Choke

Coil

RL1I4B153-M

1st

FM

IF

Transformer

RLI7W1050-T

1st

AM

IF

Transformer

RL14B8251

2nd

FM

IF

Transformer

RLI2B4500-M

2nd

AM

IF

Transformer

RL14B510

3rd

FM

IF

Transformer

eel

RL14B552

3rd

FM

IF

Transformer

(Secondary)

RLM1C20

MPX

Coil

RLM1C5-K

MPX

Coil

RLT5H100-W

Power

Transformer

RVFCF10S12CB

|

Ceramic

F

ilter

RKM190B

RJS34A-X

RKH47A

RKT46A

XTW3D10B

RNW1020

RGB49B

RGK294B

RGK364A

RGK325A

RGK326A

RGK297B

RGP174A

RGX387A

RGX403A

Cabinet

Only

(Order

RYMRF973M)

Conecting

Socket

Handle,

Cabinet

Metal

Fitting

,

Handle

Screw,

Handle

M’tg

Washer,

Handle

M’tg

Badge,

Panasonic

Mark

Indicating

Plate,

1G

Mark

Cabinet

Front

(Complete)

Indicating

Plate,

Volume

&

Tuning

Mark

Indicating

Plate,

Cabinet

Front

Indicating

Plate,

Cabinet

Front

Indicating

Plate,

Power

Mark

Panel,

Dial

Ornament,

Panel

Ornament,

Cabinet

Right

Side

@

PES

Rome

INTEGRATED

CIRCUIT,

TRANSISTORS

AND

DIODES

RYMRF973M

IF

Amplifier

;

AN253

2SC0921

2801359

280829

250828

FM

RF

Amplifier

FM

Converter

&

AM

Oscillator

FM

IF

Amplifier

&

AM

Mixer

|

Distributor,

Eye

Switching,

Matrix

SK

OK

ek

eth

mek

eh

mech

cee

eh

week

med med

A)

ed

KK

OK

EDK

DK OK OK

OK

CS KS

OOK

OE

2SA666

280945.

Amplifier,

Regulator,

Pre

Amplifier,

AF

Amplifier

|.

38kHz

Amplifier.

AF

Amplifier

.

|

RGX404A

RYARF973M

Ornament,

Cabinet

Left

Side

Cabinet

(Complete)

Cover

Only,

Cabinet

Back

(Order

RYF

RF973M)

Conecting

Socket

RKF

129A

RJS34A-X

RJK2402E

?

RYFRF973M

XTW3D10B

XTN3D20B

RGT294A

RMA5022B

RKK58A

aaa

XEARCR217EAS

RMA88A

RMS14A

RBN141A

RBN142A

XSB3+30BNS

XYN3DF8S

RJJ79

RUC44A

Power

Amplifier:

Power

Amplifier

Stabilizer...

.

FM

AFC.0

wees.

FM

AGC;

AM

‘Detector

&

AGC

FM

Detector,

Doubler,

(L-R)

Detector

Operation

Compensator

Stereo

Eye

Operation

Compensator

280227:

2SA642

=

RVDKB265J3

RVDSC-15

OA90

2-0A90

RVDVD1210

LN12

1$1211°

Case,

Battery

(With

terminals)

Cover

(Complete),

Cabinet

Back

Screw,

Case

M’tg

Screw,

Case

M’tg

Name

Plate

Bracket

(Plastic),

Whip

Antenna

Cover

Only,

Battery

Compartment

Whip

Antenna

Bracket

(Metal),

Whip

Antenna

|

Bracket,

Speaker

Knob,

Volume

&

SE

Control

Knob,

Tuning

Screw,

Cabinet

Cover

M’tg

Screw,

Whip

Antenna

M’tg

Jack,

Headphone

Bracket,

Headphone

Jack

ERD18VJ560

ERD18VJ100

ERD18VJ270

ERD18VJ470

ERD18VJ391

ERD18VJ471

Watt,

Carbon

Watt,

Carbon

Watt,

Carbon

Watt,

Carbon

¥4wWatt,

Carbon

MwWatt,

Carbon

YwWatt,

Carbon

DKK

EDK

DK

DE

MwWatt,

Carbon

Watt,

Carbon

4wWatt,

Carbon

Watt,

Carbon

Watt,

Carbon

Watt,

Carbon

.

Watt,

Carbon

Watt,

Carbon

COILS

AND

TRANSFORMERS

ar

|

RF-973

|

_~

—

@

€0869

© @

e

QQQ@QQSSSSSSO

NON

<><

N

NOOK

INNNN<-<<N

ONNNNNNNN<NNNN-~<-<N

ONS]

ON

ANN

Ges——N

eK

KKK

KK

KKK

720958R

®

Printed

in

Japan

RF-973

| :

|

Matsushita Electric RF-973B User manual

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