Panasonic RF-562DGU Manuale utente

Order No. MD0401005C3

FM-AMPORTABLE RADIO

RF-562DGU / RF-562DGC

Colour

(K)... Black

SPECIFICATIONS

Specification

RADIO

FrequencyRange

FM 88-108 MHz

MW 530-1605 kHz

SW 4.75-18 MHz

Power Requirement Battery; 3V, twoUM-1(R20/LR20)

batteries

Speaker 8 cm

Power output 800 mW(RMS max)

Jack

Output Earphone

Dimensions(WxH x

D) 210 x120 x65 mm

Weight 650 g(without batteries)

Notes:

1. Design and specificationsaresubject to changewithoutnotice.

2004 PanasonicAVCNetworks Singapore Pte. Ltd. All rights

reserved. Unauthorized copying and distribution isaviolation of

law.

1. Operating Instructions

1.1. Location of control

1. Speaker

2. Telescopicantenna

FM :Pull out the telescopicantenna and adjust its length and

anglefor optimum reception.

MW :The sensitive ferrite core antenna inside the unitwill provide

excellent MW reception inmost areas. For optimum reception,

turn the unitinthe direction which gives the best results, since

the ferrite core antenna isdirectional.

SW :Extend the telescopicantenna fullyand keep itvertical.

3. Tuning control

4. Earphone jack

-Avoidlistening for prolonged periods of time to prevent

hearing damage.

-The speaker isautomaticallycut off when an earphone is

connected.

5. On-off/volume control switch

Turn clockwise to switch the radioon, and adjust the volume level.

6. Batterycompartment

2. Disassembly and Main Component Replacement

Procedures and Operational Check

“ATTENTION SERVICER”

Some chassis components maybe have sharpedges. Be careful whendiassembling and

servicing.

1. Thissection describes procedures for checking the operation of

the major printed circuitboards and replacing the main

components.

2. For reassemblyafter operation checks or replacement, reverse

the respective procedures. / Special reassemblyprocedures are

described onlywhen required.

3. Select items from the following index when checks or

replacement are required.

Content

-Checking Procedure for MainP.C.B.

2.1. Checking Procedure for MainP.C.B.

Step1 : Remove the BatteryCover.

Step2 : Remove all the screws.

Step3 : Remove the rearcabinet as arrowshown.

Step4 : Remove the Volume Knob.

Step5 : Remove all the screws.

3. Notes of Schematic Diagram

(All schematic diagrams maybe modifiedat anytime withthe development of the new

technology)

Note:

SW1

:BAND switch

VR1

:VariableResistor

-The voltage value and waveforms are the reference voltage of this

unitmeasured byDC electronicvoltmeter (high impedance) and

oscilloscope on the basisof chassis. Accordingly, there mayarise

some error involtage values and waveforms depending upon the

internal impedance of the tester or the measuring unit.

< > :FM

-Importance safetynotice :

Components identified bymark have special characteristics

important for safety. Furthermore, special parts which have

purposes of fire-retardant (resistors), high-qualitysound

(capacitors), low-noise (resistors), etc. are used. When replacing

anyof components, be sure to use onlymanufacturer's specified

parts showninthe parts list.

Caution !

IC, LSI and VLSI are sensitive tostatic electricity.

Secondarytrouble canbe preventedbytaking care during repair.

-Cover the parts boxes made of plastics with aluminium foil.

-Put aconductive mat on the work table.

-Ground the soldering iron.

-Donot touch the pins of IC, LSI or VLSI with fingers directly.

4. Schematic Diagram

5. Printed Circuit Board

6. Wiring Connection Diagram

7. Measurements and Adjustments

7.1. Tuner Section

READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT

1. Set volumecontrol to maximum.

2. Set band switch to MW, SW, AMand FM.

3. Set function selector to radio.

4. Set finetunning to centre.

5. Set power source voltageto 6VDC.

6. Outputofsignal generator should beno higher than necessaryto obtain an outputreading.

MW-RFALIGNMENT

READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT

1. Set volume control to maximum.

2. Set band switch to MW, SW, AM and FM.

3. Set function selector to radio.

4. Set fine tunning to centre.

5. Set power source voltage to 6V DC.

6. Output of signal generator should be no higher than necessary to obtain an output reading.

MW-RF ALIGNMENT

Signal Generator or Sweep

Generator

Radio Dial

Setting

Indicator (Electronic

Voltmeter or

Oscilloscope)

Adjustment

(Shown in

Fig.1)

Remarks

Connections Frequency

Fashion a loop of

several turns of

wire and radiate a

signal into loop

ant. of receiver.

511 kHz (GU)

514 ± 3 kHz

(GC)

Tuning

capacitor fully

closed.

Output meter across

voice coil.

L8 (MW OSC

MIN)

Adjust for

maximum

output.

Fashion a loop of

several turns of

wire and radiate a

signal into loop

ant. of receiver.

1,650 kHz (GC)

1639 ± 5 kHz

(GU)

Tuning

capacitor fully

open.

Output meter across

voice coil.

CT2 (MW

OSC MAX)

Adjust for

maximum

output.

Fashion a loop of

several turns of

wire and radiate a

signal into loop

ant. of receiver.

550 kHz Tune to signal. Output meter across

voice coil.

[*1] L3 (MW

ANT Coil)

Adjust for

maximum

output.

Adjust L3

moving

coil

bobbin

along

ferrite core.

Fashion a loop of

several turns of

wire and radiate a

signal into loop

ant. of receiver.

1,500 kHz Tune to signal. Output meter across

voice coil.

CT1 (MW

ANT MAX)

Adjust for

maximum

output.

Repeat

steps

(2) ~ (5).

SW-RF ALIGNMENT

Signal Generator or Sweep Generator Radio Dial

Setting

Indicator (Electronic

Voltmeter or

Oscilloscope)

Adjustment

(Shown in

Fig.1)

Remarks

Connections Frequency

Fashion a loop of

several turns of wire

and radiate a signal

into loop ant. of

receiver.

4.7 MHz Tuning

capacitor

fully closed.

Output meter across

voice coil.

L9 (SW OSC

MIN)

Adjust for

maximum

output.

Fashion a loop of

several turns of wire

and radiate a signal

into loop ant. of

receiver.

18.5 MHz Tuning

capacitor

fully open.

Output meter across

voice coil.

CT5 (SW

OSC MAX)

Adjust for

maximum

output.

Fashion a loop of

several turns of wire

and radiate a signal

into loop ant. of

receiver.

4.8 MHz Tune to

signal.

Output meter across

voice coil.

L4 (SW ANT

MIN)

Adjust for

maximum

output.

Fashion a loop of

several turns of wire

and radiate a signal

into loop ant. of

receiver.

18.0 MHz Tune to

signal.

Output meter across

voice coil.

CT6 (SW ANT

MAX)

Adjust for

maximum

output.

Repeat

steps

(6) ~ (9)

AM-IF ALIGNMENT

Signal Generator or Sweep

Generator

Radio Dial Setting Indicator (Electronic

Voltmeter or

Oscilloscope)

Adjustment

(Shown in

Fig.1)

Remarks

Connections Frequency

Fashion a loop of

several turns of

wire and radiate a

signal into loop

ant. of receiver.

455 kHz 30

percent Mod.

at 400 Hz

Point of non-

interference. (on/

about 600 kHz)

Output meter across

voice coil.

T2 (AM IF) Adjust for

maximum

output.

[*1] Cement antenna bobbin with wax after completing alignment.

FM-IF ALIGNMENT

Signal Generator or Sweep

Generator

Radio Dial Setting Indicator (Electronic

Voltmeter or

Oscilloscope)

Adjustment

(Shown in

Fig.1)

Remarks

Connections Frequency

High side thru.

0.001Micro Farad to

test point TP3.

Negative side to test

point TP2.

10.7 MHz

(SWP)

Point of non-

interference. (on/

about 90 MHz)

Connect vert. amp. of

scope to test point

TP4. Negative side to

test point TP2.

T1 (FM-IF) [V] Adjust for

maximum

amplitude.

(Refer to

fig.

3).

High side thru.

0.001Micro Farad to

test point TP3.

Negative side to test

point TP2.

10.7 MHz

(SWP)

Point of non-

interference. (on/

about 90 MHz)

Connect vert. amp. of

scope to test point

TP5. Negative side to

test point TP4.

T3 (FM-IF) Adjust for

maximum

amplitude.

(Refer to

fig.

2).

FM-RF ALIGNMENT

Signal Generator or Sweep Generator Radio Dial

Setting

Indicator (Electronic

Voltmeter or

Oscilloscope)

Adjustment

(Shown in

Fig.1)

Remarks

Connections Frequency

Connect to test

point TP1 through

FM dummy antenna.

Negative side to test

point TP2.

86.2 MHz (GU)

87.35 MHz ± 50

kHz (GC)

Variable

capacitor

fully closed.

Output meter across

voice coil.

L2 (FM OSC

MIN)

[*2] Adjust

for

maximum

output.

Connect to test

point TP1 through

FM dummy antenna.

Negative side to test

point TP2.

109.2 MHz (GU)

108.28 MHz ± 70

kHz (GC)

Variable

capacitor

fully open.

Output meter across

voice coil.

CT4 (FM OSC

MAX)

CT9 must

prealign to

center

before

inserting

into

P.C.B..

Then [*2]

Adjust for

maximum

output.

Connect to test

point TP1 through

FM dummy antenna.

Negative side to test

point TP2.

106 MHz Tune to

signal.

Output meter across

voice coil.

CT3 (FM ANT

MAX)

[*2] Adjust

for

maximum

output.

Repeat

steps

(3) ~ (5)

[*2] Three output responses will be present; proper tuning is the center frequency.

ALIGNMENT POINT

* Please refer to Circuit Board and wiring Connection Diagram for test point locations.

DIALTHREADING

1. Remove chasisfrom cabinet (Refer to 2. Disassemblyand Main

Component Replacement Procedures and Operational Check)

2. Turn dial drum to fullycounter-clockwise. (Turn dial gear to fulley

clockwise.).

3. Route dial cord inordered character (1-6), turn 3times at Tuning

Shaft.

4. Cement dial cord ends.

DIALTHREADING

1. Turn dial drum to fullycounter-clockwise. (Turn dial drum to fully

clockwise.)

2. Set dial pointer to start point (0) of dial scale.

3. Attach dial cord to dial pointer.

8. Type Illustrations of ICs, Transistors & Diodes

9. Parts Location and Replacement Parts List

Notes:

-Important safetynotice:

Components identified bymark have special characteristics

important for safety.

Furthermore, special parts which have purposes of fire-retardent

(resistors), high-qualitysound (capacitors), low noise (resistors),

etc are used.

When replacing anyof these components, be sure to use only

manufacturer’sspecified parts showninthe parts list.

-The parenthesized indications inthe Remarks columns specifythe

areas or colour. (Refer to the cover page for area or colour)

Parts without these indications can be used for all areas.

-Capacitor values are inmicrofarads ( F) unless specified

otherwise, P= Pico-farads (pF), F= Farads.

-Resistance values are inohms, unless specified otherwise, 1K=

1,000 (OHM).

-The marking (RTL) indicates that the Retention Time islimited for

thisitems. After the discontinuation of thisassemblyin

production, the item will continue to be availablefor aspecific

period of time. The retention period of aavailabilityisdependent

on the type of assembly, and inaccordance with the laws

governing part and product retention. After the end of thisperiod,

the assemblywill no longer be available.

-[M] markings inthe Remarks columns indicates parts supplied by

PAVCSG.

-Reference for O/I book languages are as follows:

Ar: Arabic Du: Dutch It : Italian Sp:

Spanish

Cf : CanadianFrenchEn: English Ko: Korean Sw:

Swedish

Cz : Czech Fr: French Po: Polish Co:

Traditional

Chinese

Da : Danish Ge : German Ru: Russian Cn:

Simplified

Chinese

Pe : Persian

9.1. Cabinet

9.1.1. Cabinet PartsLocation

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