Panasonic RX-5025 - MEASUREMENTS AND ADJUSTMENTS; Alignment Instruction; AM, FM Alignment; AM-IF Alignment

RX-5025 oe
-
Procedure
:
~To.remove
200%
: |
Remove
—.
Shown
in
Fig.
—.
|
" MEASU REM ENTS AND ADS USTM ENTS
ALIGNMENT
INSTRUCTION
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Be
Pe ee os
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Front
Cabinet
(*1)
READ
CAREFULLY
BEFORE:
ATTEMPTING
ALIGNMENT
|
Lot,
pen
see!
annie
|
1.
Set
volume
control
to
MaXiMUMrse
ere
:
5.
Set.
tape/radio/line
selector
to
radio.
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ee
re
foe
ee
Sees.
ee
cee
2.
Set
tone
control
to
treble.
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ee
)
a
6.
Set
power
source
voltage
to
9V
DC.
|
ge
Ee
ane
:
)
:
3.
SetbandswitchtoAMorFM.
=
~—~—~——_
7.
Output
of
signal
generator
should
be
no
higher
|
Dial
Scale
(#2)
|
~DialScale
......-
ee
Sonar
4. Set balance control to center.
@ AM, FM ALIGNMENT
| than negescety to obtain an output reading.
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ADJUSTMENT
REMARKS
GUGUIE
Board
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“CONNECTIONS
|
FREQUENCY)
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SCOPE)
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AM-IF
ALIGNMENT
Dial
chassis
as
2s
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Sowa
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age
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arr
=
see
Fashion
loop
a
See
:
=
ge
oe
6
es
:
several
turns
0
4
z
|
Point
of
non-
utput
meter
oe
[Eas
eae
*
1.
Insert
the
Cassette
Arm
with
Pushing
the
Spring
to
Cassette
Arm
Holder
Fig.
Z
(1)|
AM
|
wire
and
radiate
|
30%
Mod.
|
interference.
(on/
|
across
voice
72
(
AM
|FT)
ES
for
maximum
#2,
@
Push
the
catch
in
the
direction
of
arrow
@
and
pall
up
the
dial
scale
Fig.
4.
signal
into
loop
of
|
at
400
Hz
about
‘BOCKEZ
coil.
a:
put.
e
Remove
the
dial
scale
in
the
direction
of
arrow
w@e
:
:
:
receiver.
|
oe
,
|
“AM:
RF
ALIGNMENT
_
:
|
:
i
550kHz
Output
meter
L4
(AM
2
Chin
baa
Nat
La
by
@
ALIGNMENT
POINTS
2)
AM
Sen
tar
across
voce
(+1)
L3
(AM,
|
moving
call
bobbin
cee
abi
at
oll)
|
along
ferrite
core.
* Please refer to Circuit Board which is located test points. Pee ae : CT4 ( aN OSC Adjust for maximum
BIAS
BIAS
(3)|
AM
d
1,500kHz
[100mm
:
‘
rimmer)
output.
" CT3 (AM ANT | Repeat steps (2)
OSC
CURRENT
|
Pa
|
Poe
cn
|
and
(3).
VR
302
(*
1)
Cement
antenna
bobbin
with
wax
after
completing
alignment.
BMAF ALIGNMENT é
Connect
to
test
|
Connect
vert.
|
7
|
|
point
&
through
10.7MHz
Point
of
non-
amp.
of
scope
to
|
74
(FM
1st
IFT)
Adjust
for
maximum
(4)
FM
0.001u.
Negative
(SWP.)
interference.
(on/
|
test
point
&
.
'
|
amplitude.
side
to
test
point
about
90
MHz)
Negative
side
to
|
|
(Refer
to
fg.
Jey:
|
Vv. : test point YW .
:
eee
ae
fort
maximum
-
oS
TS4EM
2nd
EY)
amplitude.
—
ic
“Cassette
aie
Holder
| :
AHeiCe
to
fig:
AS)
FM-RF ALIGNMENT
Fig.
oe
;
=
:
IREADING
i
er
@
DIAL
THRE
: | 7
Fig.
8
point
W
through
07).
osin
a
(FM
ANT
~
|
mum
output.
Cord
length
is
100cm
(397/,)
:
FM
dummy
:
,
etc
Coll)
|
a
amen
eee
406
MHz
CT2
(FM
Osc
|
(*2)
Adiust
for
maxi-
side to test poin Trimmer) - mum. output.
(7)) FM : 106MHz come | CT1(FMANT |. Repeat steps
16 bee Trimmer) | ©. (6) and (7).
Lo
ON
:
(*
2)
Three
output
FeSpOnses
will
be
present;
proper
tuning
is
the
center
ipaquency.
CT FM ANT
joeMnz ff SEPARATION ALIGNMENT
EQUIPMENT : bs
my
oat
ee
o
CT
3]
SodKHt
—
GENERATOR
|
CONNECTION
Pane
ae
7MH
z
aus
Gore
Dial
zh
z
ITEM
||
SOURCE.
ELECTRONIC.
|
_ADJUS
STMENT
SPECIFICATION
:
REMARKS
:
CONNECTION
_
COUNTER
es
oe
|
ee
7
FM
OSC
|¢
ae
:
Pat
a
eer
cas
Adjust
VR1,
for
19kHz
Adjustment
of
|
90MHz,
60dB
WV
4)
Toye
|
.
{USE
ests
JOT
IOSMHz
:
:
:
y
oe
F
:
a
oe
—
lS}
VRII
MSG.
pilot
signal.
|
(CW
Mod)
W
.(-)
ee
la
is
bomcigr
feeding
on
a
FM
OSC
oe
:
:
90MHz
mee
oe
=
&
AUDIO
ADJUSTMENT
S
~
A
oe
|
|
18)
se
CT
4]
AM
Osc
|
ITEM
|
INPUT.
MEE
|
SPECIFICATION
|
pADeUSTIMEN)
REMARKS
|
Tuning
Shatt
:
AM
IF
73
es
ae
a
|
:
|
see
ih
on
Hg
a
:
ace
Se
name
S
|
|
asekHe
|
12
|
~QZZCFM
2
‘
;
..|
Maximum
F
Sc
ne
:
:
}
|
Azimuth
(8kHz,
—20dB)
across
voice
coil
output.
Azimuth
screw
Playback
mode
|
Spring
|
oo
|
7
oo
=a
1
oan
:
Bes
-
|.
24
AM
OSC
IAS
01
|
Record
mode
ae
10.7
MHz
LTS
oS
ay
L4
S50kHz
oscillation.
ns
oe
ae
70+3kHz
L301
Beat
proof
switch
>
Il
oe
ees
:
frequency
=
|
:
oa
|
Tape
selector
>
CrOQ,
-
ee
‘
:
)
or(eeh
7
Fig.
10
Fig.
9
Bias
Use
metal
“TRoh}
BUT
mV
VR302
Record
mode.
eurrent
tape
by)
bch
m
2
eat
proof
switch
>
Il
:
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Reh
|
Tape
selector
~
Normal
|
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