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Panasonic RX-5025 Service Manual page 6

Fm-am-fm stereo radio cassette recorder

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RX-5025
RX-5025
Set volume control to maximum.
. Set tone control to treble.
|
. Set band switch to AM or FM.
. Set balance control to center.
mg AM, FM ALIGNMENT
SIGNAL GENERATOR or
SWEEP GENERATOR
CONNECTIONS | FREQUENCY
Fashion loop of
several turns of
wire and radiate
signal into loop of
receiver.
5. Set tape/radio/line selector to radio.
6. Set power source voltage to 9V DC.
7. Output of signal generator should be no higher
than necessary to obtain an output reading.
hon
INDICATOR
(ELECTRONICS
VOLTMETER
or SCOPE)
AM-IF ALIGNMENT
RADIO DIAL
ADJUSTMENT
REMARKS
455 kHz
~ 30% Mod.
at 400 Hz
Point of non-
interference. (on/
about 600 kHz)
Output meter
across voice
coil.
Adjust for maximum
AM-RF ALIGNMENT
550 kHz
[11.0mm
Iie )I
1,500 kHz
L4 (AM OSG
(*1) L3 (AM
ANT Coil)
CT4(AM OSC
Trimmer)
CT3 (AM ANT
Trimmer)
Adjust for maximum
output. Adjust L3 by
moving coil bobbin
along ferrite core.
Adjust for maximum
output.
Repeat steps (2)
and (3).
Output meter
across voice
coil.
ted test points.
3
RENT
302|
Connect vert.
amp. of scope
to
test point
:
Negative side to
test point Y .
Connect to test
point W through
0.001 .. Negative
side to test point
Point of non-
interference. (on/
about 90MHz)
10.7 MHz
Adjust for maximum
(SWP.)
amplitude.
(Refer to fig. 12.)
T1 (FM 1st IFT)
T3 (FM 2nd IFT)
oe
(Refer to fig. 13.)
L2 (FM OSC
Output meter
;
:
Coil)
(* 2) Adjust for maxi-
(6)|
FM
Cont
trough
ie VOIEe
L1 (FM ANT
mum output.
FM dummy
C
EQUIPMENT
CONNECTION
ELECTRONIC
COUNTER
)
FM SIGNAL
(SOOKHZ
TEM
GENERATOR
SOURCE
CONNECTION
Adjustment of | 90MHz, 60dB
arde
pilot signal.
(CW Mod)
|
current
tape
Ss
£4
Adjust VR1, for 19kHz
(+150Hz) reading on
electronics counter.
VR1
19kHz
Record mode
Beat proof switch > Il
|
Tape selector > Normal
<RADIO>
:
IC |
eS
:
|
-
FM IF AMP cF|
FT
0000
06
n
=
vn
nn
{s
Oo
m
ml |
<POWER>
ANT
osc
UM-I|
9V
ih},
T3Ol
REGULATOR
— Q30I
T2
CF2
J
AF AMP
VCO
alee
@—~
ich
©
L
oe
:
Rech
FM
MONO
AM
ses ST
B
St-2
STEREO
4%
IND
D305
@
<PLAYBACK>
(Lch)
<RECORDING>
(Lch)
LINE
IN
©
BALANCE
VOLUME
VR301
—-VRIOI
@) 4 } aio2,103
=
TWEETER
REC IND
CPLA
REM
SHER
COMERS
bE S E E
SRSA
LOYD PRE
ELLE
DIDS
PEELED,

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