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Panasonic RX-5220LS Service Manual page 7

Fm/lwimwisw stereo radio cassette

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ALIGNMENTS
(5)
MW
a
1,500 MHz
CT3 (MW ANT
Repeat steps (4)
Trimmer)
and (5).
™ ALIGNMENT INSTRUCTION
m@ LED METER ALIGNMENT
READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT
ITEM
ADJUSTMENT
REMARKS
1. Set volume control to maximum.
4. Set tape/radio selector to radio.
*
7. Set timer switch to OFF.
1. Supply DC 9.3 V through the DC IN jack,
:
ts
2. Set tone control to center.
5. Set power source voltage to 12V DC.
Battery check
VR301
2. Adjust VR301 so that the Sth LED from right begins to
3. Set band switch to MW, LW, SW or FM.
6. Output of signal generator should be no higher than
illuminate.
:
necessary to obtain an output reading.
;
@ LW, MW, AND SW ALIGNMENT
m@ SEPARATION ALIGNMENT
SIGNAL GENERATOR or
INDICATOR
SIGNAL
EQUIPMENT
P
RADIO DIAL
(ELECTRONICS
aa
ee
SETTING
VOLTMETER
ahi
al
REMARKS
ITEM
GOMEZ 80GB | CONNECTION | ADJUSTMENT | SPECIFICATION
REMARKS
AM IF ALIGNMENT
Mayle
Ww
_(+) side
Adjust VA1 for 19kHz
Fashion loop of
°
pilot signal.
vy "-(-) side
(+200Hz) reading on
several turns of
455 kHz
:
Output meter
F
:
;
electronics counter.
(1)}
MW_
| wire and radiate
30% Mod.
Point of non- | across voice
13 (AM ist IFT)
Adjust for maximum
signal into loop of
at 400 Hz
interference.
coil
T4 (AM 2nd IFT)
output.
receiver.
|
LW-RF ALIGNMENT
MEASUREMENT
SPECIFICATION
ADJUSTMENT
REMARKS
Pare
Output meter
L7 (LW wot
Adjust a erp ld
(2)}
LW
"
145 kHz
Zz |
across voice
re
ulput,
adiuat 2 by
;
(Leh) W
4.1+0.2mV
VR101 (Lch)
Record mode
[11.2mm 9/32")
:
(* 1) L2 (LW ANT
moving coil bobbin
Bias current
Rech
siete
sa
2]
coil
Goll
Sone teniteceore.
:
tee hth)
(Use CrO, tape)
VR201 (Reh)
Beat Proof -> |
CT6 (LW OSC
Adjust for maximum
,
Weagi
285 kHz
H
:
Bias oscillation
47.5 kHz+0.3 kHz
Record mode
i
¥
Trimmer)
output.
_—
L301
at
C
(3);
LW
285 kHz
pea
oTé uw ANT
Reteut stade:(2)
frequency
vv
(Use CrO, tape)
(Beat Proof > 1)
rimmer)
and (3).
QZZCFM
=
(*1) Cement antenna bobbin with wax after completing alignment.
Pleypgen level
(315Hz, OdB)
Speaker
ween)
RiePPar NRE
a
lotes
MW-RF ALIGNMENT
1S
a IMA OSC
RRS
|
ADJUSTMENT PARTS LOCATION
ie
550 kHz
Output meter
Coil
i t. Adj st L2 b
AN
LW ANT
3. Se
1)
MW
.
Seo Ke
[129 mm (i, | 2CFoss voice
(#2) L2(MW
moving coll bobbin"
lanier aeare
owe "Sommer Wenn Shoes
wee
1S.
coil
ANT Coil)
along ferrite core.
f
Gi
Gay
len
os
(2
5. S
CT7 (MW OSG
Adjust for maximum
Battery Check
6.
Ps
Trimmer)
output.
[VR301 | @c
7. S&.
8.
9.
0.
(*2) Cement antenna bobin with wax after completing alignment.
S
SW-RF ALIGNMENT
ere
L9 (SW OSC
Output meter
:
j
6 MHz
;
Coil
Adjust for maximum
:
(6)
SW
ee
EAL
6 MHz
[8 MM hel
poate voice
L3 (SW ANT.
output.
|
:
through ceramic
Coil)
:
capacitor (10 PF).
18 MHz
CT8. (SW OSC
Adjust for maximum
CL
(7)
Sw
Negative side
18 MHz
[188 mm
>
Trimmer)
output.
to earth.
13
CT5 (GSW ANT
Repeat steps (6)
!
1"
(7°20)
Trimmer)
and (7).
2
@ FM ALIGNMENT
|
na
SWEEP GENERATOR —
INDICATOR
fen @
A
RADIO DIAL
BAND
:
ADJUSTMENT
REMARKS
CONNECTIONS | FREQUENCY | SETTING
IMCL Sere
Connect to test
Connect vert. amp.
;
eae
Bias
(1) | FM
point W through
10.7 MHz __ | Point of non-
of scope to test point | 71 (FM IFT)
peal i Mex
Vv
(rior
0.001nF. Negative
;
interference.
'WW Negative side
(Primary)
inefer 'Of
12
\
.
:
:
side to earth,
|
to test point YW
(
ig.
12)
a
|
Adjust for maximum
Gi
7
""
"
wn"
"
T2 (FM
IFT)
+
ei
(2)|
FM
amplitude.
|
0
te
:
a
|
(Secondary)
(Refer to fig. 13.)
Ereausicy @
et
,
NE
|dee @
FM-RF ALIGNMENT
oF
MN
ae
Connect to test
Suet
x
~
{
Neral
3) | EM
pony
oe
87.5 MH
Variable
Output meter
:
(*3) Adjust for maxi-
O
rake
oO
2
antenna. (Rete to
oa
ily cae:
Bclose vuice cell:
si
a
Mum Output:
\
can
ad
fig. 14.)
[Fig. 10]
[Fig. 11]
a
90 MHz
%
L4 (FM
(*3) Adjust for maxi-
i
EM
|
9OMHz
| (26.1mm (1/-)')}
TUNE Coil)
mum output.
ee
cee
me
sen
CT2 (FM OSC
(#3) Adjust for maxi-
A
%
1
Zz
Ps
Trimmer)
mum output.
EM
106 MHz
[168mm 6)"
CT1 (FM TUNE
Repeat steps.
TO SG
TO RECELVER
Trimmer)
(3)~ (5).
(SG IMP 502)
(*3) Three output responses will be present; proper tuning is the center frequency.
-
£
an cee re re ee
ee
ee
750
as
[9]
[Fig. 12]
[Fig. 13]
[Fig. 14] FM Dummy Antenna

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