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Panasonic SG-160A - Page 4

Panasonic SG-160A
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ALIGNMENT
INSTRUCTIONS
(RADIO)
(SG-160F)
Control
Setting
and
Procedure:
4.
Volume
Control
.........0cccee
Maximum
(AM-IF
and
RF,
FM-RF),
5.
Minimum
(FM-IF)
6.
POWER
SWIIGCW
cesseccpiceetwaanarie
ON
Output
of
signal
generator
should
be
no
higher
than
2.
Tone
Control...
eee
Maximum
necessary
to
obtain
output
reading.
3.
Balance
Control..
Center
7.
Make
certain
that
speaker
system
is
connected
to
4.
BandiSeleCtOr
cvcu.sscsssasnesveneasives
AM,
FM
AUTO
AM
ANT.
Trimmer
the
tuner
when
aligning.
(1500
kHz)
Cc
AM
2nd
IFT
AM
3rd
IFT
)
(455
MHz)|
1208
(455
kHz)
ego
AM
1st
IFT:
Z)
i
Pr
=Li02-=A=7A5-=
=]
ji
iy
aa
ore
|
(455
MHz)
/
a0BCROOE
FM
Disc.
IFT
FM
Det
Trimmer
!
P
201
L201
7202
1205
fe]
(10.7
MHz)
ele
fe
CONNECTION
FREQUENCY
Fashion
loop
of
severa
turns
of
wire
and
radiate
signal
into
loop
of
receiver.
455
kHz
30%
Mod.
with
400
Hz
Point
of
non-
about
600
kHz)
|
(Imp.
4)
AM-IF
AND
RF
ALIGNMENT
FM
OSC
(106
MHz)
;
Oc
Tri
@
cT101,
*
|
(106
Miz)
AM
OSC
Trimmer
ioe
|
S|
@
|
SS
ei
is
de
ieee
tpt
103
g@
Riot
ic.
T204
Lame
(10.7
MHz)
i
®
ol
T201
(a
FM
Ist
IFT
(99
yt
D
(10.7
MHz)
(Primary)
|
pe
a
FM
2nd
IFT
(10.7
MHz)
FM
1st
IFT
LS
aan
‘ea
=
(10.7
MHz)
(Secondary)
AM
OSC
Coil
(10.7
MHz)
(550
kHz)
SIGNAL
GENERATOR
OR
STEP
SWEEP
GENERATOR
RADIO
DIAL
INDICATOR
ADJUST
REMARKS
SETTING
(VTVM
or
SCOPE)
Output
meter
across
interference
(on/
|
speaker
jack
(L)
T202
(1st
IFT)
T205
(2nd
IFT)
T208
(3rd
IFT)
output.
Fashion
loop
of
severa
2
turns
of
wire
and
radiate
a
hae
signal
into
loop
of
with
400
rae
receiver.
Fashion
loop
of
severa
3
turns
of
wire
and
radiate
Eales
signal
into
loop
of
with
400
Hy
receiver.
High
side
through
0.001
10.7
MHz
1
mfd
to
point
TP
1.
(400
kHz
Common
to
chassis.
SWP.)
{|
__
————
550
kHz
(7.5
mm)
(Imp.
42)
1500
kHz
(83.9
mm)
(Imp.
4@)
*
Cement
antenna
bobbin
with
wax
after
completing
alignment.
FM-IF
AND
DETECTOR
ALIGNMENT
Point
of
non-
interference
(on/
about
98
MHz)
|
[PS.
High
side
through
0.001
10.7
MHz
2
mfd
to
point
TP
1.
(400
kHz
Common
to
chassis.
SWP.)
a)
|
Output
meter
across
speaker
jack
(L)
L1
(ANT
Coil)
Output
meter
across
speaker
jack
(L)
Connect
vert.
amp.
of
scope
to
point
Common
to
chassis.
L201
(OSC
Coil)
(L1)
along
ferrite
core.
CT202
(OSC
Trimmer)
CT201
(ANT
Trimmer)
output.
T101
(FM
1st
IFT)
T102
(FM
ist
IFT)
T201
(FM
2nd
IFT)
T204
(FM
3rd
IFT)
T206
(FM
Disc.
IFT)
amplitude
and
(Refer
to
Fig.
6)
Connect
vert.
amp.
Common
to
chassis.
Point
of
non-
rs
amplitude and
proper
interference
(on/
ca
©
polns
EM
Dieo
IFT)
linearity
between
about
98
MHz)
‘
+100
kHz
markers.
(Refer
to
Fig.
7)
Adjust
for
maximum
Adjust
for
maximum
output
by
sliding
coil
Adjust
for
maximum
Repeat
steps
(2)
and
(3).
Adjust
for
maximum
symmetrical
curve
Adjust
for
maximum
*
Before
aligning
step
1,
turn
the
core
of
T207
fully
counterclockwise.
*
Before
aligning
step
1,
unsolder
lead
of
test
point
3
(TP3)
and
resolder
it
after
alignment.
FM-RF
ALIGNMENT
Connect
to
antenna
clip
through
90
MHz
1
Dummy
antenna.
30%
Mod.
Common
to
chassis.
with
400
Hz
(Refer
to
Fig.
8)
90
MHz
(15.8
mm)
|
(mp.
40)
Output
meter
across
speaker
jack
(L).
—r
L104
(FM
OSC
Coil)
L102
(FM
DET
Coil)
|
output.
Adjust
for
maximum
Connect
to
antenna
clip
through
106
MHz
2
|
Dummy
antenna.
30%
Mod.
Common
to
chassis.
with
400
Hz
(Refer
to
Fig.
8)
CT101
Adjust
for
maximura
Output
meter
across
:
106
MHz
speaker
jack
(L)
(FM
OSC
Trimmer)
|
output.
(79.9
mm)
(imp.
49)
CT102
Repeat
steps
(1)
and
Pp.
(FM
DET
Trimmer)
|
(2).
10.7
MHz
FIG.
6
SG-160A/160F
*
As
three
output
readinas
will
be
present,
adjustments
must
be
made
at
center
frequency.
10.7
MHz
SSG
|
(Imp.
75
Q)
759
|
|
FIG.
7
FIG.
8
DUMMY
ANTENNA
ALIGNMENT
INSTRUCTIONS
(CASSETTE
DECK)
Notes:
1.
Function
Selector
2.
Power
Source
3.
Push
Buttons
CIRCUITS
AC
BIAS
OSCILLATOR
&
ERASE
VOLUME
VTVM
CONNECTION
CONTROL
ADJUSTMENT
REMARKS
Connect
positive
side
to
TP2
and
negative
side
to
TP1.
MIN
VR801
(OSC
Level
Adjust)
Adjust
VR801
for
6+0.2
V
reading
on
VTVM-1.
AC
BIAS
OSCILLATOR
&
ERASE
Connect
positive
side
to
TP4
and
negative
side
to
TP3.
AC
BIAS
OSCILLATOR
&
ERASE
Connect
positive
side
to
TP5
and
negative
side
to
TP3.
L802
(AC
Bias
Trap
Coil)
L803
(AC
Bias
Trap
Coil)
Adjust
L802
for
3.2
+
0.2
mV
reading
on
VTVM-2.
Adjust
L803
for
3.2+
0.2mV
reading
on
VTVM-2.
Repeat
steps
(1),
(2)
and
(3)
and
check
each
indication
of
VTVMs.
Notes:
1.
1801
is
pre-aligned.
Do
not
touch
it.
.
Do
not
touch
R/P
Head
or
Erase
Head
when
adjusting.
VTVM-2
oe
pls
ue
L803
Bias
Trap
Coil
(R)
L802
Bias
Trap
Coil
(L)
Les
uell
oa
|
©
|
FIG.
9
RECORD/PLAYBACK
HEAD
AZIMUTH
ADJUSTMENT
Play
back
a
Standard
Alignment
Tape
and
turn
azimuth
adjusting
screw
for
maximum
loudness.
=
L803
L
©
T801
OSC
Coil
VR801
OSC
Level
Adjust
TP
Nh
Azimuth
Adjusting
Screw
REC/PLAYBACK
HEAD
SG-160A/160F

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