Panasonic RF-542 Manuale utente

ORDER

NO.

1D&7100270C2

Service

Manual

FM/AM

Portable

Radio

RF-

(WHITE)

(Black)

This

the

Service

Manual

for

the

following

areas.

[Z].

..For

all

European

areas

except

United

Kingdom,

F.R.

Germany,

France,

Italy

and

Finland.

[ZE]

...For

United

Kingdom.

[Z]]

...For

Italy

and

Finland.

[ZG]

...ForF.R.

Germany.

[ZY

]

...For

Spain

and

Greece.

Panasonic

SPECIFICATIONS

Frequency

Range:

87.5

~—

108MHz

Power

Requirement:

AC;

[Z}

[Zl]

[ZG]

[ZY]---220V,

50h

520

1610kHz

(577

186m)

(Ze)

eer

240V,

SOH:

Intermediate

Frequency:

10.7MHz

Battery;

(Four

“AA”

Penlight

Batteries)

455kHz

(470KHz:::{(ZE]

Only)

(Panasonic

UM-3

equivaient)

Sensitivity:

4.0uV

for

50mW

Output

Power

Consumption:3W

(AC

only)

(—3dB

Limit,

Sens)

Speaker:

8cm

Dynamic

Speaker

159uV/m

for

50mW

Output

Dimensions:

212(W)

161(H)

56(D)mm

Power

Output:

720mW

RMS.

(Max)

Weight:

610g

Without

Batteries

Impedance:

Earphone/EXT

Jack:::--::::

8043.5

Design

and

specifications

are

subject

change

without

notice.

Matsushita

Electric

Trading

to.,

Ltd.

PO.

Box

288,

Central

Ogk.a

Japan

Panasonic

LOCATION

CONTROLS

AND

COMPONENTS

ania)

°°

Speaker

(8cm,

4°)

Tuning

Control

(TUNING)

On-

Off/Volume

Control

(VOLUME)

External

Speaker/Earphone

Jack

([>

¢)

IMP

ONLY)

Handle

Telescopic

Antenna

Battery

Compartment

Socket

Band

Selector

(BAND)

DISASSEMBLY

INSTRUCTIONS

Remove

the

Battery

Compartment

Cover

(Fig.

HiRemove

the

Front

Cabinet

(Fig.

1.Remove

the

Battery

Compartment

Cover

(A)x1

1.Remove

screws

(B)

(8x20)mmx

—____

Fig.

mRemove

the

PC.

Board

(Fig.

1.Remove

the

Socket

(C)x1

Pull

out

the

Board

with

driver

the

direction

arrow

(D)

shown

(Fig.

Remove

screws

(E)

(8x12)mm

Notes:

Set

the

variable

capacitor

minimum

position.

Turn

the

tuning

knob

clockwise

until

reaching

end

scale

position.

Before

inserting

the

radio

PWB

into

the

rear

cabinet

(C)

sure

insert

completely

the

variable

capacitor

shaft

into

the

tuning

knob

cabity.

[Z]

-:-For

all

European

areas

except

[ZE]

[Z1]

[ZG]

[ZY]

[ZE]---For

United

Kingdom.

[Z|]

---For

Italy.

Fig.

[ZG]---For

Germany.

[ZY]:--For

Spain

and

Greece.

ALIGNMENT

POINTS

Please

refer

Circuit

Boara

and

Wiring

Connection

Diagram

locate

the

test

points.

ANT

(1628kHz---

Sar

SEOks

(21)

(26)

Only)

LTA)

anH2

511kHz

(87.3MHz:---

(Z1}

(ZG)

Only)

(Z!)

(ZG)

Only)

(470kHz---

(ZE)

Only)

2nd

10.7MHz

ANT

OSC

1500kHz

1650kHz

cra

ANT.

106MHz

ANT

90MHz

2nd

CT1

455kHz

OSC

(470kHz:::

109.3MHz

(ZE}

Only)

(108.3MHz---

(ZI)

(ZG)

Only)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

MEASUREMENTS

AND

ADJUSTMENTS

ALIGNMENT

INSTRUCTIONS

READ

CAREFULLY

BEFORE

ATTEMPTING

ALIGNMENT

Notes:

Set

volume

control

maximum.

Set

band

switch

FM.

Set

power

source

voltage

volts

DC.

Output

signal

generator

should

higher

than

necessary

obtain

output

reading.

INDICATOR

ADJUSTMENT

REMARKS

(AM

1st

IFT)

‘Adjust

(AM

2nd

IFT)

maximum

output.

SIGNAL

GENERATOR

SWEEP

GENERATOR

RADIO

DIAL

(ELECTRONICS

SETTING

VOLTMETER

(DISTANCE)

SCOPE)

AM-IF

ALIGNMENT

Point

non-

interference.

(on/about

600

kHz)

CONNECTIONS

FREQUENCY

Fashion

loop

455kHz

Several

turns

wire

(470kHz:-:-

and

radiate

signal

--[ZE]

only)

into

loop

receiver.

30%

Mod

400Hz

511kHz

Tuning

”

(S14kHz

----

capacitor

(Z!]

[ZG]

only)

fully

closed.

1650

kHz

Tuning

(1628kHz-:--

capacitor

[Z1]

[ZG]

only)

fully

open.

Adjust

for

maximum

;

*1)L1

(AM

output.

Adjust

550

kHz

Tune

signal.

”

ANT

Coil)

moving

coil

bobbin

along

ferrite

core.

Adjust

for

maximum

”

1500

kHz

Tune

signal.

aes

output.

Repeat

steps

(2)~(5)

(*1)

Cement

antenna

bobbin

with

wax

after

completing

alignment.

Connect

vert.

Pea

amp.

scope

Adjust

for

maximum

10.7

MHz

(on/about

point

(FM

1st

IFT)

amplitude.

MHz)

Negative

side

(Refer

fig.

1).

;

point

Adjust

for

maximum

”

(FM

2nd

IFT)

amplitude.

(Refer

fig.

2).

Connect

point

Output

meter

across

voice

coil.

CT3

(AM

OSC

Trimmer)

High.

side

thru.

0.001uF

point

Negative

side

point

86.2MHz

through

dummy

Tuning

antenna

Negative

side

(87.3MHz

capacitor

Output

meter

(FM

OSC

Goil)

(*2)

Adjust

for

maxi-

(ZI)

(ZG)-:-

fully

closcd.

across

voice

coil

mum

output.

Only)

109.3

MHz

(108.3MHz

(ZI

(ZG)---

Tuning

capacitor

fully

open.

CT1

(FM

OSC

Trimmer)

Adjust

for

maximum

output.

Repeat

steps

(8)~(11).

point

WwW

“1

Only)

poe

(*2)

Three

output

responses

will

present;

proper

tuning

the

center

frequency.

CT2

(FM

ANT

Trimmer)

Fig.

RF-542

SCHEMATIC

DIAGRAM

IC2_TA8100N

ere

ate

eee,

eee

Sea,

ae,

eee

IC1

nol

festa

RVITA7358P

022-7

ANTENNA

pee

-10V3

2SC829BNCTA

cag

EARPHONE

dsedbaale

eee

SPEAKER

Notes:

gcm(3”)4Q

1.S1-1~S1-2:

Band

switch

“FM”

position

Gonnins

FM,

3----

AM)

2.82:

Power

select

switch

“DC”

position

S200;

Power

switch

“OFF”

position

4.DC

Voltage

measurements

are

taken

withan

electronic

—

BATTERY

voltmeter

based

negative

terminal

Battery.

---FM

position,

(

):--AM_

position.

Battery

Current

signal---

20mA

Maximum

output

-----:------225mA

VR1---

+--+

Volume

Control.

ome

(B)

Voltage

Line

meee

Signal

Line.

C18

M0.047

The

mark

(W)

Shows

test

point.

e.g.

JI5P

(

--Test

point

(J24P

Important

safety

notice

[Z1][ZG]

MO.001

K22P

Components

identified

the

symbol

have

special

Only)

K20P

(k27P

S+

characteristics

important

for

safety.

(K24P

[ZI

[ZG]

680

rite

220V50Hz

When

replacing

any

these

components,

use

only

[ZI][ZG]

Only)

(ZI[ZI[ZG]

On!

manufacturer's

specified

parts.

Only)

nly

Peeps

Ser

She

eyes

eee

(240V50Hz

;

iE]

Only)

™

REPLACEMENT

PARTS

LIST

(T)

Indicates

parts

that

are

supplied

TAMACO.

IC2

D1,2

Important

safety

notice

TA8IO0N

RVDIN4002

Components

identified

the

symbol

have

special

char-

actristics

important

for

safety.

IF/AM

IF/POWER

AMP

RECT

When

replacing

any

these

components,

use

only

manufacturer’s

specified

parts.

[Z]

---For

all

European

areas

except

[ZE]

[Z!]

[ZG]

[ZY]

iad

RESISTORS

CAPACITORS

PARTS

LIST

Ref.

No.

Part

No.

Part

Name

Description

[ZE]---For

United

Kingdom.

[Zl]

---For

Italy.

INTEGRATED

CIRCUIT;

TRANSISTOR

AND

DIODES

IC1

RVITA7358P

LS:

Numbering

System

Resistor

Numbering

System

Capacitor

IZG]:-For

Germany.

Example:

[ZY]

-«-For

Spain

and

Greece.

2SC829-B

Transistor

ERD

101

ECKD

102

D1,D2(T)

RVD1N4002

Diode

Type

Wattage

Shape

Tolerance

Value

Type

Voltage

Value

Tolerance

_Peculiarity

eres

peices

(1009)

(1000

pF)

Ref.

Part

silo

vin

arene:

RLO2B113

Oscillator

Coil

_ERJ

__2R2

ECEA

R47

RESISTORS

ECCD1H220KC

RLO4Y19

Antenna

Coil

Type

Wattage

Shape

_‘

Tolerance

Value

Type

Voltage

Peculiarity

Value

ERDS2TJ560

ECCD1H270KC

RLO4Y70

Oscillator

Coil

(2.2)

(0.47

pF)

ERDS2TJ101

ECFD1C223MD

ERDS2TJ220

ECFD1C103MD

ERDS2TJ331

ECEA1AS221

ERDS2TJ472

;

RCBS1H681KB

ERDS2TJ680

RCBSOJ153MY

ERDS2TJ392

18,

ECFD1C473MD

ERDS2TJ473

RCBS1C103MY

ERDS2TJ470

ECEA1CS100

ERDS2TJ273

L4(ZI)(ZG)

RLO4N148

Oscillator

Coil

L5(ZN

(ZG)

RLQY10S3

Choke

Coil

RLQY50S5

Choke

Coil

RLQZB100K

Choke

Coil

RLI4B153

Transformer

RLI4B158

Transformer

RLI2B465

Transformer

RLI2B215

Transformer

RLT5I2G4A

Power

Transformer

+10%

+20%

+5%

+2%

+1%

+0.25pF

+0.5pF

t1pF

Carbon

Resistor

Solid

Resistor

Incombustible

Box-Shaped

Wire-Wound

Resistor

Metal

Oxide-Film

Ceramic

Capacitor

(ECCD,

ECKD

Type)

(Chitacon)

50V

Ceramic

Capacitor

(ECFD

Type)

(Chitabari)

:12V0C

Semiconductor

50V

Ceramic

Capacitor

Electrolytic

Capacitor

Tantalum

Fixed

Electrolytic

Capacitor

ECEAOJS471

ERDS2TJ102 ECEA1AS331

ERDS2TJ681

ECEA1AS471

ECEA1AS102

CAPACITOR

ECKD1H223ZF

ECCD1H470KC

ECCD1HO30CC

ECCD1HO50CC

ECEAOJS

221

RCBS1H150JC

C3(Z1)

(ZG)

RCBS1H240JL

RCBS1H102KB

ECKD1H102MD

ECCD1H200KC

C7(ZI)

(ZG)

ECCD1H240KT

ECCD1H120KC

(Z)

(21)

(ZG)

T5(T)(ZE)

RLTS5I2ZA2A

Power

Transformer

VARIABLE

RESISTOR

VR1(T)

RVV5C6A14

Volume

(With

Power

$3)

VARIABLE

CAPACITOR

VC1-4

RCV4LC2V1K

—=_

Tuning

Capacitor,

W/Trimmer

Capacitor

(CT1~

CERAMIC

FILTER

RVFSFE107MAZ

Ceramic

Filter

SWITCHES

Resistor

Wire-Wound

Resistor

Superstable

Metal

Film

Resistor

Metal-Film

Resistor

Chip

Resistor

NOONHO

Polystyrenc

Film

10V

Capacitor

25V

Polystyrene

Film

SOV

Capacitor

100V

Polypropylene

Film

Capacitor

—

T.F

Capacitor

RSS139

Switch,

Band

SPEAKER

Chip

Capacitor

Cylindrical

Ceramic

Capacity

are

microfarads

(iF)

unless

specified

Capacitor

1(T)

EAS8P307TZ

—

Speaker

otherwise,

P=Pico-farads.

JACK

Resistance

are

ohms

(Q),

unless

specified

J1(T)

RJJIA4Y

Jack,

(With

Battery

otherwise,

1K=1,000Q,

1M=1,000KQ

(Z)

(20

(ZG)

Jack

$2)

;

J1(T)(ZE)

RJJ1A5Z

Jack,

(With

Battery

Jack

S2)

RJP3G1TZ

Plug

RJJD3M6Z

Jack,

Headphones

CIRCUIT

BOARD

AND

WIRING

CONNECTION

DIAGRAM

BAT

TERY

[ZI

[ZG]

Only

es,

eet:

eee

DYNAMIC

meal

[Z]

-:-For

all

European

areas

except

SPEAKER

a:.4

[

ZE}

[Zl]

[ZG]

[ZY]

[ZE]---For

United

Kingdom.

[Z|]

---For

Italy.

[ZG]---For

Germany.

[ZY]---For

Spain

and

Greece.

CAUTION

RISK

ELECTRIC

SHOCK

voitage

line.

Pleasedo

not

touch

this

portion.

Anode

Cathode

Cao—4q--—0

D1,2

CABINET

AND

ELECTRICAL

PARTS

LOCATION

Panasonic

[Z]

---For

all

European

areas

except

REPLACEMENT

PARTS

LIST

[ZE]

[Zl]

[ZG]

[ZY]

(T)

Indicates

parts

that

are

supplied

TAMACO.

[ZE]---For

United

Kingdom.

NOTES:

Important

safety

notice

(BK)

....

Black

Components

identified

the

symbol

have

special

char-

[21]

For

Italy.

(WT)

....

White

actristics

important

for

safety.

[ZG]---For

Germany.

When

replacing

any

these

components,

use

only

[ZY]---For

Spain

and

Greece.

manufacturer's

specified

parts.

CABINET

PARTS

F2(T)

RBT238TZ8

Knob,

Tuning

(WT)

K1(T)(Z)(ZE)

RYMF542ZKT

Front

Cabinet

Ass’y

(BK)

JE3(T)

RBT239TZ

Knob,

Volume

(BK)

K1(T)(Z)(ZE)

RYMF542ZKT8

Front

Cabinet

Ass’y

(WT)

JE3(T)

RBT239TZ8

Knob,

Volume

(WT)

K1(T)(ZI)

(ZG)

RYMF542ZiIKT

Front

Cabinet

Ass’y

(BK)

|E4(T)

RJT235TZ

Terminal

K1(T)(Z1)

(ZG)

RYMF542ZIKT8&

Front

Cabinet

Ass’y

(WT)

[E5(T)

RJC263TZ

Battery

Terminal

(+)

K2(T)(Z)

RYFF542ZKT

Rear

Cabinet

Ass'y

(BK)

|E6(T)

RJC264TZ

Battery

Terminal

(—)

K2(T)(Z)

RYFF542ZKT8

Rear

Cabinet

Ass’y

(WT)

[E7(T)

M17+4

Screw

K2(T)(ZE)

RYFF542ZEKT

Rear

Cabinet

Ass’y

(BK)

|E8

XYN3

+F8FN

Screw

K2(T)(ZE)

RYFF542ZEKT8

Rear

Cabinet

Ass’y

(WT)

|E9

XSN26+5

Screw

K2(T)(Z0)

RYFF542ZIKT

Rear

Cabinet

Ass’y

(BK)

|E10

XTV3+12C

Screw

K2(T)(Z0)

RYFF542ZIKT8

Rear

Cabinet

Ass’y

(WT)

XWA26B

Washer

K2(T)(ZG)

RYFFS42ZGKT

Rear

Cabinet

Ass’'y

(BK)

[E12(T)

QEFO75TY

Souce

Wire

Ass’y

K2(T)(ZG)

RYFF542ZGKTS8

Rear

Cabinet

Ass’y

(WT)

[E13

RMC163

Shield

Cover

K3(T)

RYNF542XKT

~——

Battery

Cover

Ass’y

(BK)

ACCESSORIES

K3(T)

RYNF542ZKT8

Battery

Cover

Ass’y

(WT)

JA1(Z)

(ZI)

(ZG)

RJA20Z

Power

Cord,

K4(T)

RJC262TZ

Battery

Terminal

(+&—)

[A1(ZE)

RJA86Z

Power

Cord,

K5(T)

RMS202TZ

Spring

A2(T)

RQX578TZ

Instruction

Manual

K6(T)

RKH211TZ

Handle

(BK)

K6(T)

RKH211TZ8

Handle

(WT)

XTN3

20C

Screw

PACKING

MATERIALS.

P1(T)

RPK388TZ

Carton

Box

P2(T)

RPP264TZ

Polyethylene

Cover

P3(T)

RPNA1033TZ

Polylon

ELECTRICAL

PARTS

E1(T)

XEARK162DAY

Telescopic

Antenna

RBT238TZ

Knob,

Tuning

(BK)

TD[ZI/[ZEV{ZW/ZG)/[ZY]

T.Y

Printed

Taiwan

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