Panasonic RF-544 User manual

ORDER NO. MD9207070C2
Service Manual
FM-AM
Portable
Radio
Radio
RF-544
Pa
aoe
Black
Type
Area
© 0
F.R.Germany & Italy
(EG)
i SPECIFICATIONS
General : Radio Section :
Power Requirement : AC; 230~240V, 50Hz Frequency Range : FM; 87.5 ~ 108 MHz
Battery; 6V, four R6/LR6 (UM-3) batteries AM; 520 ~ 1610 kHz
Power Output : 680mW ...RMS (max.) Intermediate Frequency : FM; 10.7 MHz
Power Consumption : 3W (AC only) AM; 459 kHz
Speaker : 8cm PM Dynamic Speaker (4Q) Sensitivity : FM; 18 dB/S50 mW output
Jacks
:
Output;
Earphone
(8Q,
370mW)
(-3
dB
Limit
Sens.
)
Dimensions : 222 (W) x 121 (H) x 79 (D) mm AM; 57 dB/m/50 mW output
Weight : 560g without batteries.
Notes :
1. Weights and dimensions shown are approximate.
2. Design and specifications are subject to change without notice.
Panasonic

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_RF-544 |
MB MEASUREMENTS AND ADJUSTMENTS
@ ALIGNMENT INSTRUCTIONS
READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT
1. Set volume control to maximum. 3. Set power source voltage to 6V DC.
2. Set band switch to AM or FM. 4. Output of signal generator should be no higher than necessary
to obtain an output reading.
i AN-IF ALIGNMENT
SIGNAL GENERATOR or INDICATOR
SWEEP GENERATOR RADIO DIAL (ELECTRONIC ADJUSTMENT
SETTING
VOLTMETER
or
—_|
(Shown
in
Fig.3)
REMARKS
CONNECTIONS
FREQUENCY
OSCILLOSCOPE)
Headphones Jack
Fashion a loop of several 459kHz Point of non- (16 ~ 32Q)
turns of wire and radiate 30% Mod. interference.(on/ | /Fabicate the plug as showny | T2(AM IFT) Adjust for maximum
signal into loop of receiver. at 400Hz about 600kHz) (se cael haa °) output.
the measuring instrument.
Mi AM-RF ALIGNMENT
Fashion a joop of several
output.
signal into loop of receiver. | 514+3kHz(EG) | fully closed.
CT1-3 (AM OSC | Adjust for maximum
Trimmer output.
Adjust for maximum
(*1] L8 (AM ANT] output. Adjust L3 by
moving coil bobbin
along ferrite core.
“
CT1-4 (AM ANT ; Adjust for maximum
Trimmer) | output.
1639+5kHz(EG) | fully open.
[*1] Fix antenna coil with wax after completing alignment.
Mi FM-IF ALIGNMENT
INDICATOR
SWEEP GENERATOR RADIO DIAL (ELECTRONIC ADJUSTMENT
SETTING VOLTMETER or (Shown in Fig. 3)
CONNECTIONS FREQUENCY OSCILLOSCOPE)
Connect
to
test
point
Point
of
non-
cone
lt
amp
of
through
ceramic
capacitor.
10.7MHz
interference.(on/
ipa
saa
T1
(FM
IFT)
ere side to test point (Sweep) about 90MHz)
REMARKS
Waveform is shown
Negative side to test in Fig. 2
point BiGEH.
Mi FM-RF ALIGNMENT
Headphones Jack
| _ | (16 ~ 320) ae
86.2MHz(E/EB) Variable capacitor | sFabicate the plug as shown, |L5 (FM OSC Coil) [*2] Adjust for
Connect to test point 87.35+0.05MHz(EG) | fully closed. e Fig.1 and then connect maximum output.
through
FM
dummy
antenna.
the
lead
wires
of
the
plug
to
the
measuring
instrument.
ry tive side to test point oMHZ(EEB) | Variable capacitor
108.2540,05MH2(EG)' fully open.
106 MHz Tune to signal.
{*2] Three output response will be present; proper tuning is the center frequency.
¢ ALIGNMENT POINT
¢ Please refer to Circuit Board and Wiring Connection Diagram for test point locations.
= to
=> Measuring
a7 = Instrument
Ay = R= 16-320
Fig.1 Fig2

FM OSC AM IFT FM ANT
1108.25 « @ OSMEL (459kHz) (106MHz)
108.25 + 0.05MHz)...EG
| T2 | ICT 1-2 | -2
CT1-1
FM IFT
(10.7MHz)
FM OSC
AMANT
(86.2MHz)...E/EB
(550kHz)
(87.35 + 0.05MHz)...EG
ry
=
AM OSC AM OSC AM ANT
(511kKHz)...-/EB 1650kHz)...E/EB — (1500kHz)
(514 + 3kHz)...EG te29 45 Hz)...EG
Fig. 3
lM TERMINAL GUIDE OF IC'S, TRANSISTORS & DIODES
CXA1019S RVD1SR139TA

@ CABINET PARTS LOCATION
T101(POWER
TRANSFORMER)
[
(MAIN P.C.B.]

Mm REPLACEMENT PARTS LIST
Notes: * Important safety notice:
Components identified by Z\ mark have special characteristics important for safety.
Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low noise (resistors), etc are used.
When replacing any of these components, be sure to use only manufacturer's specified parts shown in the parts list .
* The parenthesized indications in the Remarks columns specify the areas. (Refer to the cover page for area)
Parts without these indications can be used for all areas.
Part Name & Description
* [MJ Indicates in the Remarks columns indicates parts supplied by MESA.
VARIABLE CAPACTTOR(S)
Cl RCV4LCTOV-R | VC, TRIMMER
Toons) Teansronven
Li RLQY505S5 COIL
L2 RLQY50S5 COIL
RLF2C63-0Z COIL, AM ANT
LS RLD4Y43W COIL, FM OSC
| L5 RLO4N214-0 COIL, FM OSC
L101 RLQZBIROKT-D) COIL
L102 RLQZBIROKT-Dy COIL
TL_| RLMBIS3-M
Part No. Remarks
Part Name & Description Remarks
CABINET & CHASSIS
Vv
M]
[M] (E)
[M] (EG)
[M} (EB)
DIAL PANEL [M] (E/EB)
X0002B-K | DIAL PANEL [M] (EG)
RGVX0008-H | KNOB, SELECTOR [M
RGWX0009-H | KNOB, TUNING [M]
RGWX0008-H | KNOB, VOLUME — [M]
XYN3+F8FY | SCREW
XTV3+12G-M_ | SCREW
—
EAS8P307JC- [M
M
RKMX0009A-H | FRONT CABINET
| RKSX00t1A-H_ | REAR CABINET
RFKHFS44EGK | REAR CABINET ASS'Y
RFKHFS44EBK | REAR CABINET ASS'Y
RKDX0002A-K
i) aml
}
&
Nine
oo}
T2 RLI2B251-M | AMIF
T RLO2B118-M | AMOSC . -
T101__| RTP1I1B002-V | POWERTRANSFORMER | (M] A
— FILTERS)
3
F
CF2 RVFSFU459R AM CF [M]
I
I
K
12
3
14
15
—
RDGX0006 VARICON GEAR [M
RKHX0001-H HANDLE [M
RKKX0001-H BATTERY COVER
!
j
]
]
RIC93005-1 | BATTERY SPRING [M}
XEARK162DA- [M]
]
]
]
}
17
8
9
20
21
22
es
comics A
| sir CHEE)
S
RSS3B45XA-H
|
SW,
FUNCTION
ma
S101
RJJ1SE01-H
SW,
JACK
W/SW
(JK101)
AN
IK! RJJD3M9ZA-H | JACK, EARPHONE [MI]
JK101 | RJJISEO1-H =| JACK, ACIN man
| | Accrssorres
—y
RMEX0001 ANTENNA ROD SPRING [M
RJC70031ZB BATTERY TERMINAL (-) [M
RGCATOED r
IE
INTEGATED CIRCUIT(S)
CXA1019S IC, POWER AMP/AM-FM IF
_
F
—
t
Cl
DIODE(S)
RYDISR139TA |; DIODE
RVDISR139TA | DIODE
RVDISR139TA
D101
D102
D103
D104
[M]
RQT1579-E INSTRUCTION MANUAL (M} (E/EG)
RQT1579-E | INSTRUCTION MANUAL __| [M] (EB) /\
AC CORD (mI BG) /\
AC CORD (My EB) AA
A
A
A
A
VARIABLE RESISTOR(S)
VR, VOLUME
VRI
1
]
2
EVJF8AF15B14 2

Remarks
patna, Part Name & Description
Ns PACKING MATERIAL(S)
=
= al
[ais sor
=
=
RPNX0007 POLYFOAM [M]
XZB30X25A04 POLYBAG
Mi RESISTORS & CAPACITORS
* Capacitor values are in microfarads (uF) unless specified otherwise, P=Pico-farads (pF) F=Farads
“ Resistance values are in ohms, unless specified otherwise, 1K=1,000 (OHM).
“ Bracketed indications in Ref. No. columns specify the area (Refer to the first page for area).
Parts without these indications can be used for all areas.
Values & Remarks Values & Remarks
C102 ECKR1H103ZF5 | 0.01 50V
RESISTORS. c1o3.- [ECKRIH103ZF5 |0.01 sov.
nee
| RESISTORS
C104 |ECKRIH103ZE5
fxosznet_— 27m, V4W_(E/EB
|
| | CaPacrrors |
eee | aNES|
47P SV
5.6P 50V
ov
Ref. No. Ref. No. Part No. Ref. No. Part No.
Values & Remarks
5
R2
R3
R4
Cl
C2
G3
C4
C5
C6
C7
C8
ECBT1H8R2KCS5| 8.2P
ECBT1H1203C5 | 12P 50V (E/EB)
20P 50V (EG)
5
50V
6.3V
B
©2;98;21@ Ni | oO
|
ECBT1H2003C5
ECBT1H2205C5 | 22P
ECBTIH8R2KC5| 8.2P
ECBT0J223NS5 | 0.022
C13
C14
C15
C16
C17
cis |BCEAICUL00B | 10 16V
C19. |ECBAIAU47IB | 470 —«10V
C20 [BCEAIHU2R2B | 2.250
| co fecEAsu221B | 220 63V
C22 |FCRA1AU471B
C23. |ECFRIC223KR
C214 |ECBA1AU330B | 33
C25 | ECBT1H102KB5
C101 ECKR1H103ZF5