National SG-970A User manual

ORDER
NO.
SDT-160
FET/SOLID
STATE
AM/FM
MULTIPLEX
STEREO
RADIO-PHONO
WITH
SEPARATE
SPEAKER
SYSTEM
mover
SG-970A
SPECIFICATIONS
Frequency
Range:
FM
87.5~108MHz
(3.43
~
2.78
m)
0A90
FM
AGC
AM
525~1605kHz
(571
~
187m)
0A90
FM
AGC
Intermediate
Frequency:
FM
10.7
MHz
0A90
FM
_
Discriminator
Pair
AM
455
kHz
OASO
FM
_
Discriminator
Transistors:
2SK19
FM
RF
Amplifier
(FET)
O0AS0
AM
_
Detector
2SC920
FM
Mixer
OA90
Doubler
;
2SC829
FM
Oscillator
OA90
Doubler
|
Pair
2SC829
FM
1st
IF
Amplifier
0AS0
L—R
Detector
2SC829
AM
Converter
OA90
L—R
Detector
|
Pai
2SC829
FM
2nd
IF
Amp.
&
0A90
_—_L=R
Detector
j
Tera
AM
ist
IF
Amp.
OA90
L—R
Detector
2SC829
FM
3rd
IF
Amp.
&
EYV-320D1R2J2
AOC
AM
2nd
IF
Amp.
Thermistors:
ERT-D2FGK750S
2SC829
Distributor
Temperature
Compensator
(four)
2SC829_
19kHz
Amplifier
Sensitivity:
FM
3uV/50
mW
for
30
db
Quieting
2SA101
38kHz
Amplifier
AM
100nV/m/50mwWw
2SC829
DC
Amplifier
Power
Output:
5W—5SW
MPO
(IHF)
2SB178
DC
Switching
Power
Source:
AC
110V, 125V,
210V,
240V
2SA564
1st
AF
Amplifier
(left)
50
~
60
Hz
;
2SA564
1st
AF
Amplifier
(right)
Speakers:
Two
16cm
PM
Dynamic
(162)
2SB173.
2nd
AF
Amplifier
(left)
Recorded
Changer:
FA-707A
2SB173.
2nd
AF
Amplifier
(right)
Cartridge:
EPC-34TTCD
Magnistate,
with
Stylus
2SB173
3rd
AF
Amplifier
(left)
Stylus:
EPS-13TTSD
Flipover
Diamond
2SB173.
3rd
AF
Amplifier
(right)
Phonomotor:
AC
Motor
(120V
50
Hz)
4
Speed
2SB176
4th
AF
Amplifier
(left)
Cabinet
Dimensions:
Tuner
Cabinet
2SB176
4th
AF
Amplifier
(right)
430
(W)
x
175(H)
x
409(D)
mm
2SB473
Power
Output
(left)
(16-5/16")
(6-7/8"’)
(161/16)
2SB473
Power
Output
(left)
Speaker
System
2SB473
Power
Output
(right)
232
(W)
x
345(H)
x
190(D)mm
2SB473
Power
Output
(right)
(9-1/8")
(13-9/16")
(7-1/2’)
Diodes:
SC-15
AFC
Weight:
Tuner
Cabinet
10
kg.
(22
Ib.)
OAS0
FM
AGC
Speaker
System
2
kg.
(4
Ib.
6%
oz)
each
TT
TT
TT
eo
<EXPORT
DIVISION)
MATSUSHITA
ELECTRIC
TRADING
CO.,
LTD.
MATSUSHITA
ELECTRIC
INDUSTRIAL
CO.,
LTD.
P.O.
Box
288,
Central
Osaka,
Japan
RADIO
and
STEREO
DIVISION

MODEL
SG-970A
CONTENTS
PARTS.
IDENTIFICATION.
4
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DISASSEMBLY
INSTRUCTIONS
To
Remove
Speaker...
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2
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Baffle
Board
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Record
Changer...
.
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EKER
CHS
3
To
Remove
Escutcheon
From
Chassis
....
2...
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GUIDE
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DIAGRAM
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5
CIRCUIT
BOARD
WIRING
VIEW
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ALIGNMENT
INSTRUCTIONS
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SERVICING
THE
RECORD
CHANGER
...........
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12-13
RECORD
CHANGER
REPLACEMENT
PARTS
LIST
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14-15
REPLACEMENT
PARTS
LIST
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16,
18-21,
23-24
EXPLODED
VIEW
OF
RECORD
CHANGER.
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17
EXPLODED
VIEW
OF
CABINET

MODEL
SG-970A
PARTS
IDENTIFICATION
Knobs
sreataiieaae
Baffle
Board
Ass‘y
Selector
Knobs
(SBN-302)
uning
Knobs
(SY
B-18)
(SBN-300)
Bass,
Treble
Ballance
Loudness
Screw
No.
1
(Black)
Screw
No.
2
(Black)
Top
Cover
Mounting
Record
Changer
__
(FA-707A)
N
Badge
Ass’y
(SYE-94)
Trim
A
j
(SG
X-506)
SEARLE
SEE
oe
National
Bad
:
(SG8-348)
—
=~
__
Side
Panel
(R)
(SGW-1820)
Side
Panel
at
il
Lea
Phone
Jack
(SJJ-32)
Panel
(SGX-254)
Push
Button,
Power
Switch
(SBN-342)
Fig.
1
FRONT
VIEW
Tee
Cover
ae
B
:
:
—
Terminal
Placement
Screw
No.1
Screw
No.3
(SKM-2360-1)
(SGK-258)
Bottom
Cover
Bottom
Cover
Jack
A
Holder,
Mounting
Mounting
(SJJ-40)
FM
Feeder
Line
Voltage
(SHR-404)
Selector
A
f
(RSR-26)
Screw
No.2
Rubber
Legs
Screw
No.1
Top
Cover
(SHG-314)
Bottom
Cover
Top
Cover
Mounting
(SKF-1200)
Mounting
Side
Panel
Indicator
<£
Complete
(L)
Label
A
(SY
K-668)
Terminal
Placement
Jack
B
(SGK-256)
-64
Screw
No.4
Side
Panel,
(SJE-64)
Screw
No.2
Bottom
Cover
Complete
(R)
Bottom
Cover
Mounting
(SY
K-666)
Mounting
Fig.
2
REAR
VIEW
Fig.
3
BOTTOM
VIEW
Band
Selector
Switch
(ESR-E245F30AE)
Bass
Control
(EVF-NOAL35B54)
Pulley
Shaft
Treble
Control
(EVF-NOAL35B54)
Pulley
D
(RDR-14)
(RDY-1)
Pulley
D
__Pulley
Shaft
(RDY-8)
(RDR-14)
Tuning
Shaft
(SDT-1242)
"
Agee
Pulley
Shaft
(RDY-1)
een
Pulley
D
(RDR-14)
Balance
Control
Dial
Light
:
(EVC-B2AL35G15)
(XAN-437)
Dial
Plate
(SKD-2560)
Loudness
Control
(EVG-K1AL35B54)
Dial
Pointer
(SDP-96)
Light
Holder
(SJF-105)
Fig.
4
CHASSIS

MODEL
SG-970A
To
Remove
Speaker
(Refer
to
Figs.
5
&
6)
1.
Remove
four
(4)
rear
cover
mounting
screws,
Nos.
1-4,
as
shown
in
Fig.
5.
2.
Unsolder
wires
from
speaker
terminal.
3.
Remove
four
(4)
speaker
mounting
nuts,
Nos.
7-10,
as
shown
in
Fig.
6.
4.
To
reassemble,
reverse
above
procedure.
To
Remove
Baffle
Board
(Refer
to
Figs.
5
&
6)
1.
Remove
four
(4)
rear
cover
mounting
screws,
Nos.
1-4,
as
shown
in
Fig.
5.
2.
Remove
four
(4)
speaker
mounting
nuts,
Nos.
7-10,
as
shown
in
Fig.
6.
3.
Remove
six
(6)
baffle
board
mounting
nuts,
Nos.
1-6,
as
shown
in
Fig.
6.
4.
To
reassemble,
reverse
above
procedure.
To
Remove
Record
Changer
(Refer
to
Figs.
3
&
7)
1.
Remove
four
(4)
bottom
cover
mounting
screws,
Nos.
1-4,
as
shown
in
Fig.
3
on
page
1.
2.
Unplug
receptacle
housing
from
plug
housing,
as
shown
in
Fig.
7.
3.
Unplug
two
pin
plugs
from
changer
jacks,
as
shown
in
Fig.
7.
4.
Remove
four
(4)
changer
mounting
circlips
and
wash-
ers,
as
shown
in
Fig.
7.
5.
To
reassemble,
reverse
above
procedure.
Screw
No.
2
Circlip
&
Washer
Circlip
&
Washer
DISASSEMBLY
INSTRUCTIONS
Screw
No.
1
Screw
No.
3
Indicator
Plate
(SGK-300)
Speaker
Lead
(SWJ-28)
Fig.
5
Speaker
(E
AS-16P
24SF)
Nut
No.
1
Nut
No.
4
Nut
No.
7
7
Ser
7
Nut
No.9
Nut
No.
27%
Nut
No.
5
Nut
No.
8
Nut
No.
10
Nut
No.
3
Nut
No
6
Fig.
6
-
Gray
(Right)
-
Pin
Plug
-Brown
(Left)
-Circlip
&
Washer
No.
4
Fig.
7
BOTTOM
VIEW
(BOTTOM
COVER
OPEN)
i
DF
ae

MODEL
SG-970A
MODEL
SG-970A
DISASSEMBLY
INSTRUCTIONS
DIAL
CORD
STRINGING
GUIDE
To
Remove
Chassis
(Refer
to
Figs.
1,2,
8
&
9)
1.
Remove
two
(2)
top
cover
Pin
Plug
(Giey
Lead
mounting
screws
(left
&
(RJP-5)
Receptacle
Housing
(SJJ-20)
right),
Nos.
1-2,
as
shown
in
Pin
Plug
(Brown
Lead)
Plug
Housing
(SJJ-34)
(RJP-5)
ae
i?
Fig.
1
on
page
1.
2.
Remove
two
(2)
top
cover
mounting
screws
(rear
side),
ee
ae
Nos.
1-2,
as
shown
in
Fig.
2
Chassis
Mounting
on
page
1.
3.
Remove
four
(4)
chassis
mounting
screws
(left
&
right),
Nos.
1-4,
as
shown
in
Fias.8&
9.
4.
Unplug
receptacle
housing
from
plug
housing
and
four
pin
plugs
from
pin
jacks
C,
as
shown
in
Figs.
8
&
9.
Fig.
8
RIGHT
SIDE
VIEW
oe
5.
Remove
lead
holder
from
chassis
as
shown
in
Fig.
7.
Screw
No.
2
Chassis
Mounting
Screw
No.
3
Chassis
Mounting
3
Turns
Y
Tuning
Shaft
6.
To
reassemble,
reverse
above
Fig.
12
procedure.
:
‘
Dial
Drum
Screw
No.
5,
Chassis
Moujting
Notes:
To
Mount
Dial
Pointer
R
as
one
He
_
_
Vin
eeed
Holder
(SUS-14)
1.
Tuning
capacitor
should
be
positioned
at
minimum
capacity
(open).
1.
Set
tuning
capacitor
to
fully
closed
position.
Dial
Springs
[4
=
.
Pin
Plug
(Brown
Lead)
2.
Numbered
arrows
(1-12)
indicate
correct
order
of
stringing
dial
cord.
2.
Set
dial
pointer
to
starting
point.
(RDS-414)
=
(RJP-5)
3.
Cement
dial
cord
ends.
3.
Attach
dial
cord
to
dial
pointer.
Pin
Plug
(Grey
Lead)
Screw
No.
4
(RJP-5)
Chassis
Mounting
, ‘
Screw
No.
6,
Chassis
Mounting
PARTS
IDENTIFICATION
To
Remove
Escutcheon
From
Chassis
(Refer
to
Figs.
9,
10
&
11)
1.
Follow
instruction
1
to
5
above.
2.
Remove
seven
(7)
chassis
mounting
screws
Nos.
1-7,
as
shown
in
Figs.
10
&
11.
ik
3.
To
reassemble,
reverse
above
es
Fig.
9
LEFT
SIDE
VIEW
guy
eon
zeit
il
ie
ale
7
it
i—
fe
"te
i
.
ts
©
0
foo
von
Line
Voltage
Selector
(RSR-26)
ae
—
Tuning
Capacitor
Tis
(ECV-5XR27B185)
cre
Power
Transformer
-
(SLT-5L18-D)
DIT
Screw
No.
4
Screw
No.
7
O
Screw
No.
1
Screw
No.
2
{____
Screw
No.
3
4
”
SoiainGrS
Screw
No.
6
S
Fig.
10
Fig.
11
Fig.
13
RF
SECTION
(FM
&
AM)
Fig.
14
POWER
SUPPLY
SECTION
Ale:

EXT
FAT
ANT
x
3BV
XS
nett
wf
»
3}
7R,
Drein
Ds
G
6
=
Source
7
Ren
7
Ry
TRy
CoMeclop
B
Base
ash
Er:
é
Emitter
TR
TR
CoMecbor
Emiler
7K
TR
Tk
~
Tho
Meckor
Ci
—
Dot
Base
>
2
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A
36
136
37 38
ee
4|r
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$3
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Ss
A
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—
SCHEMATIC
DIAGRAM
MODEL
SG-970A
ISTRIBUTOR
19KHz
Amp.
DOUBLER
Base
>
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alt
&
oa!
Emitler
/
op
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5
4,6
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MIX.
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SWITCHING
7
8
9
11
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15
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106
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17
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iz
4
3
1
Band
Selector
Switch
in
“FM
STEREO”
position.
:
FM
AFC
ON-OFF
Switch
in
“ON”
position.
:
Power
Source
Switch
in
“OFF”
position.
:
Shut
Off
Switch
in
“OFF”
position.
:
Power
Source
Voltage
Selector
in
“110V”
position.
®
Du
~
13
20A90_x
4
L-R
DET
©OOO89
135
55
(18
19
48
107
21
20
22
5
5.
DC
voltages
measured
with
vacuum
tube
voltmeter
under
no
signal
condition
in
‘‘FM”
position.
Measured
DC
voltages
shown
polarity
with
respect
to
chassis
ground.
TRs
[J
TRi~9
TR15
~
24
TR10
~
14
(
COMMON
AUX
PH
ZH
744
STEREO
4M
23
62
63,
04
ss
63
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433127
65
9
ge
2122,
128:129
59
617981
67
68
28
53 57
27110
58
29
65
104
54102
24
56
25
26
61
52
64_51
TR,
14
2SA564
x
2
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hig:
Aux
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AF
Amp.
>
’
AM
position
FM
position
FM
position
.
FM
stereo
position
a
FM
au
IF
Amp.
AM
DET
a
a
acc
DET
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OK
(®)
96
111
112 106
115
123
113 107
116
32
103
34
120
104
114
108
117
93
92
84
95
126
31
99
35
100
101
102 121
105
8
124
36
33 34
80
8397
93
95
60_84
85
86 87
9188
98
89
92.90
94 96
7
108
109
3171
73
32
100
101
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WOOK
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AF
Ath
Amp.
2409-210V-
1257-1100
———
POSITIVE
LINE
GROUND
LINE
———
NEGATIVE
LINE
(AF
CIRCUIT)
NEGATIVE
LINE
(IF,
RF
&
FM
MPX
CIRCUIT)
NATIONAL
RADIO
PHONOGRAPH

MODEL
SG-970A
PARTS
IDENTIFICATION
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SECTION

MODEL
SG-970A
PARTS
IDENTIFICATION
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Fig.
16
AUDIO
SECTION
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CIRCUIT
BOARD
WIRING
VIEW
MODEL
SG-970A
TR20
Cc
—10V
B
—2.15\
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—2V
|
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Dial
Light
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|
Ti
Bal
i
Ie
ed
fe
|
Wi)
=
(2)
Green
Gi)
_
Red
Lo)
Yellow
Fower
Source
Sefector
19
TR10
TRil
TR8
|
rm
|FMsTeREO
|_|
rm
|rmsterco|
|
|_
c
~0.08V
Zz
-2V
c
|
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ev
|
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tiv
026v.
|
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B
—4.5V
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—3V
[B|
24v
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|
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0.9V
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1.6v
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0.2V
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le
0.75mA
Ic
2mA
[Ie]
Oma
0.8mA
|
—
|Ic|
3.6mA
1.8mA
|
sf
te]
Si

TR14
TR20
TR19
TR18
TR16
L
FM
FM
STEREO
TR17
TRis
e
—10V
.
—10V
zx:
—5.9V
c
-5.4V
c
|
-5v
-5V
€
—5.9V
c
—5.8V
B
|
-2.15v
B
—2.15V
B
—1.6V
B
—0.6V
il
ia
i
—2.4V
B
—1.6V
B
—0.62V
E
~2V
E
~2V
E
—1.4V
E
—0.46V
E
|
-1.8v
—1.8V
E
—1:4V
E
—0.48V
Ic
5mA
[lc
5mA
Ic
|
1.4mA
Ic
1mA
Ic|
0.3mA
0.3mA
Ic
1.4mA
[Ie
1mA
Vio
td.)
Jeg
o7/
0
\\
ST
(astue
1]
(Contr
]
ja
Wy
4
Vez
AOR
Lee
rail
@)
TRB
FM
|
em
STEREO
c
|
—5v —5V
B
|
-2v
—2.4V
ole
[E
|
—1.8Vv
—1.8V
Va
Ic
|
0.3mA
0.3mA
2
=
Met
Sad
2,3
LT
@
supe
2120
e
7
P-N?4
Mmmm
POSITIVE
VOLTAGE
LINE
mmm
GROUND
LINE
mums
NEGATIVE
LINE
(AF
CIRCUIT)
NEGATIVE
LINE
(IF,
RF
&
FM
MPX
CIRCUIT)
NATIONAL
aravio
PHonocraPu
-
PRINTED
IN
JAPAN

MODEL
SG-970A
ALIGNMENT
INSTRUCTIONS
FREQUENCY
&
DISTANCE
ON
DIAL
SCALE
To
accurately
align
to
the
proper
frequencies
on
the
dial
Table
scale,
refer
to
Table
at
right
and
mark
the
edge
of
the
dial
scale
accordingly,
using
the
“Start
Point’
mark
on
the
dial
Band
{
Fesueey
Distance
from
“‘Start
Point”
scale
as
a
reference
point.
550 kHz
9.2
mm
1500
kHz
82.8
mm
oa
90
MHz
|
15.44
mm
106
MHz
|
75.04
mm
Notes:
1.
Loudness
Control
.......
Maximum
(AM-IF
&
RF,
FM-RF),
Minimum
(FM-IF)
2.
BassControl
..........
Maximum
3.
Treble
Control
.........
Maximum
4.
BandSelector
.........
AM,
FM,
FM
STEREO
5.
AFC
Switch
..........
OFF
(FM-IF
&
RF)
6.
Output
of
signal
generator
should
be
no
higher
than
necessary
to
obtain
output
reading.
7.
Make
certain
that
speaker
system
is
connected
to
the
tuner
when
aligning.
SIGNAL
GENERATOF.,
or
RADIO
DIAL
INDICATOR
STEP
SWEEP
GENERATOR
SETTING
(VTVM
or
ADJUST
REMARKS
CONNECTION
FREQUENCY
|
(DISTANCE)
SCOPE)
AM-IF
&
RF
ALIGNMENT
Fashion
loop
of
Point
of
.
1
several
turns
of
wire
455
kHz
noninterference
eae
Jaa
tae
Ls
oe
pal
Adjust
for
maxi-
and
radiate
signal
30%
Mod.
(on/about
speanc!
Jer
.
"
mum
output.
into
loop
of
receiver.
|
with
400
Hz.
|
600
kHz)
(imp.
1682)
T9
(3rd
IFT)
Fashion
loop
of
Adjust
for
maxi-
|
2
|
several
turns
of
wire
a
oa
550
kHz
rh
pine
Na
L5
(ANT
Coil)
mum
output
by
and
radiate
signal
etek
vin
(9.2
mm)
“p
!
:
L6
(OSC
Coil)
sliding
coil
(L5)
:
with
400
Hz
(Imp.
162)
into
loop
of
receiver.
:
P.
along
ferrite
core.
Fashion
loop
of
Adjust
for
maxi-
3
_
|
several
turns
of
wire
bce
laed
1500
kHz
~~
EL
CT4
(ANT
Trimmer)
mum
output.
and
radiate
signal
with
"400
Hz
(82.8
mm)
|
lies
160)
.
CT5
(OSC
Trimmer)
Repeat
steps
(2)
into
loop
of
receiver.
. .
and
(3).
EE
*
1.
Cement
antenna
bobbin
with
wax
after
completing
alignment.
2.
Make
certain
that
speaker
system
is
connected
to
tuner
when
aligning.
FM-IF
AND
DETECTOR
ALIGNMENT
Adjust
for
maxi-
A
;
Pi
T1
(FM
1st
IFT)
7
pa
ermek
cme
10.7
MHz
Sine
detsees
Connect
vert.
amp.
of
T2
(FM
2nd
IFT)
ie
till
elas
T
Ips
(400
kHz
on/
scope
to
point
TP2.
T3
(FM
3rd
_
IFT)
pe
RLOD
;
-
SWP.)
on/about
Common
to
chassis
T5
(FM
4th
IFT)
linearity
between
Common
to
chassis.
:
98
MHz)
:
T7
(EM
Disc.IFT)
+100
kHz
markers.
as
(Refer
to
Fig.
18)
os
ee
Adjust
for
maxi-
High
side
thru.
Point
of
mum
amplitude
2
.001mfd
to
point
aon
ites
noninterference
Connect
Vere
ellis
ae
T8
AEM
Disc.
FT)
and
proper
TP
1,
2
(on/about
scope
to
point
Irs.
A
CAPT.
linearity
between
Common
to
chassis.
SWP.)
98
MHz)
Common
to
chassis.
+100
kHz
markers.
(Refer
to
Fig.
19)
—_—_—___1
—
lL
*
1.
When
aligning
step
1,
unsolder
lead
between
TP2-a
&
TP2-b
before
alignment
and
resolder
it
after
step
1
alignment.
2.
Turn
the
core
of
T8
(FM
Disc.
IFT)
fully
counterclockwise
before
alignment.
FM-RF
ALIGNMENT
Connect
to
EXT.
FM
antenna
terminal
.
through
Dummy
90
MHz
90
MHz
Sutout
(aterecross:
|,
LA
(EM
OSC
Cail)
Adjust
for
maxi-
1
antenna
30%
Mod.
(15.44
mm)
speaker
jack
(L).
L1
(FM
ANT
Coil)
-
fun
outous
ATI
Or
with
400
Hz.
,
(Imp.
162)
L2
(FM
Collector
Coil)
:
(Refer
to
Fig.
20)
Connect
to
EXT.
FM
antenna
terminal
CT3
(FM
OSC
Tri
Adiust
fo
i-
>
|
through
Dummy
Ba
ihe
loeMHe
|
ee
|
ert
(FM
ANT
Trimmer)
|
mon
output.
antenna.
:
with
"400
Hz
(75.04
mm)
‘imp.
160)
:
CT2
(FM
Collector
Repeat
steps
(1)
oe
Hao
Trimmer)
|
and
(2).
:
sil
*
As
three
output
readings
will
be
present,
adjustments
must
be
made
at
center
frequency.
9
=
MODEL
SG-970A
ALIGNMENT
INSTRUCTIONS
Li
FM
ANT
Coil
(90
MHz)
CTs
AM
OSC
Trimmer
(1,500
kHz)
Dis
UIT
ITTT
TT
77777777
L2
FM
Collector
Coil
(90
MHz)
CT1
FM
ANT
Trimmer
(106
MHz)
T2
FM
1st
IFT
(Secondary
)
(10.7
MHz)
CT2
FM
Collector
Trimmer
T1
FM
1st
IFT
(Primary)
MEOGsraNSe)
(10.7
MHz)
AM
ANT
Trimmer
La
FM
OSC
Coil
NOG
Nice)
(90
MHz)
CT3
FM
OSC
Trimmer
(90
MHz)
Le
AM
OSC
Coil
(550
kHz)
TP4
T3
FM
2nd IFT
T1i2
FM
MPX
Coil
(10.7
MHz)
(38
kHz)
T4
AM
1st
IFT
(455
kHz)
Te
AM
2nd
IFT
(455
kHz)
T7
FM
Disc
IFT
Ts
FM
3rd
IFT
(10.7
MHz)
(10.7
MHz)
T9
AM
3rd
IFT
T11
FM
MPX
Coil
(455
kHz)
(19
kHz)
Ts
FM
Disc
|FT
T10
FM
MPX
Coil
(10.7
MHz)
(19
kHz)
R37
Separation
Adjust
TP2
we
Ls
MW
ANT
Coil
(550
kHz)
Fig.
17
ALIGNMENT
POINT
10.7
MHz
pace
eae
esas
1
10.7
MHz
SG
37.52
2259,
(SG
imp
752)
|
752
To
Receiver
|
Fig.
18
Fig.
19
Fig.
20
FM
DUMMY
ANTENNA
—~10—

WIUVEL
0U-IJJUA
ALIGNMENT
INSTRUCTIONS
FM
STEREO
ALIGNMENT
Notes:
60
1.
Stereo
Modulator
..
Connect
Stereo
Modulator
to
EXT.
Mod.
terminal
of
signal
generator.
2.
Signal
Generator
..
Modulation
Rate
of
19
kHz
Pilot
Signal
.
.
10%
Output
LEGVED
pees:
coh
tests
ore
suk
aw
Be
ee
30
dB
Fig
21
Frequency
............0-
ee
eee
Approximately
89.5
MHz
:
pone
a
¥
R37
SEPARATION
3)
TUNED
hate
wx
sha
Approximately
89.5
MHz
CONTROL
19
kHz
AMP.
ALIGNMENT
TI
EQUIPMENT
CONNECTION
ADJUST
REMARKS
SIGNAL
GENERATOR
OSCILLOSCOPE
Connect
to
EXT
FM
antenna
Connect
vert.
Amp.
of
scope
T10
(19
kHz
Coil)
Adjust
T10
—
T12
for
maxi-
terminal
through
dummy
to
point
TP4.
T11
(19
kHz
Coil)
mum
oscilloscope
pattern
of
antenna.
(Refer
to
Fig.
19)
Common
to
chassis.
T12
(38
kHz
Coil)
38
kHz.
*
When
aligning,
set
separation
control
(R37)
as
shown
in
Fig.
21.
SEPARATION
ALIGNMENT
Notes:
1.
Signal
Generator........
Modulation
Rate
of
19
kHz
Pilot
Signal
.....
10%
Modulation
Rate
of
Right
and
Left
Signal
..
.
.
27%
Output
Level...
........
2.00000
e
eae
60
dB
2.
Balance
Control
........
Adjust
balance
control
so
that
output
level
from
both
units
becomes
equal.
EQUIPMENT
CONNECTION
ADJUST
REMARKS
SIGNAL
GENERATOR
VTVM
OSCILLOSCOPE
Connect
to
EXT
FM
antenna
terminal
through
dummy
antenna.
(Refer
to
Fig.
19)
antenna
terminal
through
dummy
antenna.
(Refer
to
Fig.
19)
Oscilloscope
(B)
-
(Left)
Connect
to
EXT
FM
Connect
across
speaker
jack.
(left
side)
(Imp.
162)
Connect
across
speaker
jack.
(left
side)
(Imp.
162)
Connect
to
.
mum
indication
on
VTVM
terminals
of
ai
Hla
el
from
the
left
side
output
when
VTVM.
the
right
side
of
stereo
modula-
Connec
terminals
of
R37
(Separation
Control)
VTVM.
Before
separation
aligning,
disconnect
lead
between
TP4
and
Oscilloscope
(A).
Oscilloscope
(B)
-
(Right)
Adjust
T12
&
T10
for
mini-
tor
is
modulated.
Adjust
R37
for
minimum
in-
dication
on
VTVM
from
the
left
side
output
when
the
right
side
of
stereo
modulator
is
modulated.
t
to
Stereo
Modulator
Signal
Generator
Dummy
Antenna
162
162
(10W)
(10W)
=
Oscilloscope
(A)
r
Fig.
22
RECOMMENDED
EQUIPMENT
CONNECTION
FOR
SEPARATION
ALIGNMENT
|
MODEL
SG-970A
SERVICING
THE
RECORD
CHANGER
SPECIFICATIONS
Operating
Voltage.................02.0.
120
Volts,
AC
Turntable
Speeds
................0000.
16-2/3,
33-1/3,
45
and
78
RPM
n(c.o10)
(0
|
Wo:
to
|
ee
Up
to
six
7”,
10”
or
12”
records
with
any
intermix
at
the
same
speed.
LUBRICATION
The
Record
Changer
mechanism
is
well
lubricated
before
leaving
the
factory;
after
prolonged
use,
it
is
advisable
to
relubricate
certain
parts.
A
medium
grease
should
be
applied
to
the
points
as
shown
in
Fig.
27.
ADJUSTMENT
Stylus
Set-Down:
During
automatic
operation
the
stylus
sets
down
1/8
inch
from
edge
of
record.
Turning
the
stylus
set
down
adjustment
screw
counter-clockwise
causes
the
stylus
to
set
down
further
in
from
the
edge
of
the
record.
(See
Fig.
24)
Pickup
Arm
Height:
To
raise,
turn
screw
head
by
hand
counter-clockwise;
to
lower,
turn
screw
head
clockwise.
Adjust
stylus
to
clear
a
full
stack
of
records
by
1/8
inch.
(See
Fig.
24)
Stylus
Pressure:
The
needle
pressure
is
adjusted
at
the
factory
for
the
correct
pressure
of
6
grams.
Move
the
spring
to
different
holes
to
set
other
pressure.
(See
Fig.
24)
DISASSEMBLY
INSTRUCTIONS
1.
Turntable
Assembly
Remove
Circlip
and
carefully
lift
Turntable
Assembly
off
its
bearing.
When
replacing
Turntable
Assembly,
push
the
Idler
Wheel
Assembly
towards
the
Turntable
Center.
This
action
will
allow
turntable
to
drop
in
position
without
damaging
Idler
Wheel.
2.
Record
Support
Arm
Assembly
Make
sure
the
Unit
has
completed
its
cycle
and
the
Pickup
Arm
returned
to
the
Rest.
Remove
the
Circlip
and
Washer
from
the
bottom
of
the
Record
Support
Arm
Spindle.
The
Record
Support
Arm
Assembly
can
then
be
removed
from
the
top
of
the
Unit.
3.
Pickup
Arm
Assembly
The
Unit
should
be
disconnected
from
Power
supply
before
attempting
to
remove
the
Pickup
Arm
Assembly.
The
Pickup
Arm
leads
should
be
detached
from
the
Terminal.
Remove
the
Pickup
Arm
Spindle
Nut
pull
the
Pickup
Arm
Assembly
upward.
4.
Center
Spindle
Assembly
Move
the
Feed
Link
fully
toward
the
Switch,
then
release.
Remove
the
Center
Spindle
Assembly.
5.
Idler
Wheel
Remove
the
turntable
(step
1).
Remove
Circlip
carefully
and
lift
off
the
Idler
Wheel.
Replace
new
Idler
Wheel
carefully
'
on
shaft.
DO
NOT
TOUCH
OUTSIDE
EDGE
OF
IDLER
WHEEL
OR
LET
IT
CONTACT
ANY
OIL
OR
GREASE.
Note:
Refer
to
FA-707A
Service
Manual
for
more
detailed
service
information.
REPLACING
CARTRIDGE
AND
STYLUS
Stylus
1.
Lift
the
Pickup
Arm
to
a
position
that
will
make
the
stylus
accessible.
2.
Gently
remove
Stylus
and
place
new
Stylus
in
to
correct
position
as
shown
Fig.
26.
Cartridge
1.
Lift
the
Pickup
Arm
to
a
position
that
will
make
the
Cartridge
accessible.
2.
The
leads
are
removed
gently
by
pulling
the
connectors
off
the
Cartridge
terminals.
3.
Gently
remove
Cartridge
by
spreading
the
Cartridge
Holder
spring
as
shown
in
Fig.
25.

MODEL
SG-970A
SERVICING
THE
RECORD
CHANGER
Record
Support
Arm
Pickup
Arm
Led:
Center
Spindle
Turntable
Speed
Selector
Lever
Stylus
Selector
Fig.
23
‘Dy
Cartridge
Yi
Attaching
Spring
Fig.
25
REPLACING
CARTRIDGE
FRONT
VIEW
Reject
Lever
Pickup
Arm
Height
Adjustment
Screw
Stylus
Pressure
Adjustment
Stylus
Set
Down
Adjustment
Fig.
24
PICKUP
ARM
ADJUSTMENT
Fig.
26
REPLACING
STYLUS
BACK
VIEW
Grease
Here
Grease
Here
_
Turntable
Shaft
ay,
Grease
Here
Idler
Wheel
Ass’y—
Oil
Here
Capstan
Grease
Here
|
Arm
Plate
7
|
.
i
|!
—
Operating
R
*
|
Plate
Ass’
~
Cam
Gear
Ass‘y
|
¥
Grease
Here
Fig.
27
LUBRICATION
=43=

MODEL
SG-970A
REF.
NO.
RECORD
CHANGER
REPLACEMENT
PARTS
LIST
PART
NO.
DESCRIPTION
Automatic
Record
Changer
PER
SET
REMARKS
(pcs.)
=
FA-707A
Automatic
Record
Changer
2
FU-PWROO9
Circlip
3
FU-TCA013
Turntable
Rubber
1
4
FU-TTA048
Turntable
Assembly
i
1
5
FU-ADA005
45
RPM
Adapter
Complete
1
6
FU-JSA004
Center
Spindle
1
7
FU-KKP036
Speed
Change
Label
1
8
FU-MPL082
Escutcheon
Moulding
2
9
FU-KLE009
Lever,
Speed
&
Reject
2
10
FU-KKP035
Reject
Lavel
1
11
FU-JIKO76
Joggle
Screw
3
12
FU-GBS044
Cushion
Rubber
3
13
FU-PWM018
T.
T
Washer
2
14
FU-PZB081
Idler
off
Lever
1
15
FU-PTD043
Ball
Race
Assembly
1
16
FU-PWFO009
Felt
1
17
FU-GAA010
Cam
Gear
Assembly
1
18
FU-JBS138
Nut
(Pickup)
1
19
-
EPU-13TTCD
Pickup
Arm
Assembly
1
20
FU-PWFO055
Washer,
Pickup
2
21
FU-ETA1
13
Record
Support
Arm
Assembly
1
|
22
FU-NPAO12
Actuating
Slide
Assembly
1
23
|
FU-RSA033
Pickup
Arm
Rest
Assembly
1
24.
FU-MPLO79
Record
Support
Housing
1
25
FU-PWM049
Washer,
Record
Support
1
26
FU-BWR081
‘Spring;
Record
Support
1
27
FU-JBS150
Boss,
Record
Support
1
28
FU-ETA110
[
Main
Plate
Assembly
1
29
FU-ETA104
Arm
Plate
Holder
Assembly
1
30
FU-MPLO78
Cam,
Speed
Change
1
31
FU-GBS039
Rubber
Cushion
4
32
FU-BCP059
Spring
(Arm
Plate)
1
33
FU-JSCO86
Screw
A,
Rubber
3
34
FU-CPC7H-5
Capstan
1
35
FU-PSP042
Motor
Plate
Holder
1
36
FU-JPCO91
Stud
A
1
37
FU-FPC092
Stud
B
2
38
2E-10GPL
Motor
Assembly
1
39
FU-IPA010
Idler
Wheel
Assembly
1
40
i
FU-UPA037
Idler
Holder
Assembly
1
41
FU-BTNO95
Spring
(Idler
Holder)
1
=
44.

MODEL
SG-970A
RECORD
CHANGER
REPLACEMENT
PARTS
LIST
(Cont'd)
PER
PART
NO.
DESCRIPTION
Nees
REMARKS
FU-UPA036
Arm
Plate
Assembly
Not
used
FU-ETA105
Feed
Link
Assembly
FU-PFT
239
Switch
Base
Assembly
AM-77909
Micro
Switch
ESL-1812
Short
Switch
Assembly
FU-PDRO13
Operation
Lever
A
FU-ETA102
Operation
Lever
B
FU-BWRO96
Spring
FU-ETA143
Operating
Plate
Assembly
FU-PKA010
Main
Sub
Plate
Assembly
FU-JSC087
Screw
B,
Rubber
Cushion
FU-ETA142
Index
Plate
Assembly
FU-GPLO12
Rubber
Cushion
FU-ETA106
Selector
Assembly
FLPV-3N
Terminal
FU-ETA133
Socket
Holder
Assembly
FU-PWM059
Washer
FU-ETA108
Pickup
Plate-A
Assembly
FU-JIKO60
Pickup
Arm
Raising
Spindle
Ass’y
FU-BCP055
Magnet
(Actuating
Slide)
Spring,
Pickup
Plate
A
FU-BTNO084
Spring
(Feed
Link)
ER-30S
Circlip
ER-40S
Circlip
ER-50S
Circlip
OHW-30W
Toothed
Lock
Washer
JMP-3060UF2
Self
Tapping
Screw
+
JMP-3080UF2
Self
Tapping
Screw
JMP-30100UF2
Screw
JMP-30160UF
2
Self
Tapping
Screw
JMP-40120UF2
Self
Tapping
Screw
FU-PWF062
Washer
FU-PWFO59
Washer,
Actuating
Plate
KPW-40SB2
Washer
FU-PWF019
Washer
L18U17R475
Lead
Wire
A
Red
L18U17C475
Lead
Wire
B
Brown
EPG-1396P1
Plug
Housing
ERD-12TK684
680k2
1/6Watt
+10%
Solid
ECK-DO5100MY
10pF
50WV
+1pF
Ceramic
EPC-34TTCD
Cartridge
ESP-13TTSD
Stylus
(Diamond)
=
45=

MODEL
SG-970A
TR1
PART
NO.
REPLACEMENT
PARTS
LIST
DESCRIPTION
TRANSISTORS
2SK19
FM
RF
Amplifier
PER
SET
(pes.)
REMARKS
TR2
2SC920
FM
Mixer
TR3
2SC829
FM
Oscillator
TR4
TR5
2SC829
FM
1st
IF
Amplifier
2SC829
AM
Converter
TR6
2SC829
TR7
2SC829
FM
2nd
IF
Amp.
&
AM
1st
IF
Amp.
FM
3rd
IF
Amp.
&
AM
2nd
IF
Amp.
TR8
2SC829
Distributer
TRO
2SC829
19kHz
Amplifier
TR10
2SA101
38kHz
Amplifier
TR11
2SC829
TR12
2SB178
TR13,
14
2SA564
DC
Amplifier
DC
Switching
1st
AF
Amplifier
(L
&
R)
TR15,
16
2SA173
TR17,
18
TR19,
20
TR21,
22,
23,
24
2SA173
2nd
AF
Amplifier
(L
&
R)
3rd
AF’
Amplifier
(L
&
R)
2SB176
4th
AF
Amplifier
(L
&
R)
2SB473
Power
Output
(L
&
R)
SC-15
$<.
DIODES
AFC
OA90
FM
AGC
0A90
FM
Discriminator
(pair)
OA90
AM
Detector
O0A90
OAS0
Doubler
(pair)
L-R
Detector
(pair)...
D10,
11
&
D12,
13
O0A90
AM
D.
AGC
10DC-1
Rectifier
10DC-1R
Rectifier
12B-2B1P-M
Rectifier
EYV-320D1R252
AOC
(Ceramic
Diode
Varister)
THERMISTORS
ERT-D2FGK750S
Temperature
Compensator
—_—
COILS
AND
TRANSFORMERS
SLA-4P6
FM
Antenna
Coil
SLD-4Y4
FM
Collector
Coil
SLQ-Y11G-2
IF
Trap
Coil
16S

MODEL
SG-970A
EXPLODED
VIEW
OF
RECORD
CHANGER
47

MODEL
SG-970A
REF.
NO.
PART
NO.
SLO-4Y2
SLF-2E10
SLO-2C12M
REPLACEMENT
PARTS
LIST
(Cont'd)
DESCRIPTION
FM
Oscillator
Coil
PER
SET
(pcs.)
1
REMARKS
AM
Ferrite
Antenna
Coil
AM
Oscillator
Coil
SLO-V394-2Y
Multiplex
Filter
SLO-Y35G-2D
RFC
T1,2
SLI-4B102
1
FM
1st
&
2nd
IFT
T3
SLI-4C32M
FM
3rd
IFT
T4
SLI-2C14M
AM
1st
IFT
TS
SLI-4C22M
FM
4th
IFT
T6
SLI-2C22M
AM
2nd
IFT
T7
SLI-4C56M
T8
SLI-4C58M
FM
Disc.
tFT
FM
Disc.
IFT
T9
SLI-2C42M
AM
3rd
IFT
T10
SLM-2C4K
T11
SLM-2C2K
T12
SLM-3C2K
Multiplex
19kHz
Coil
Multiplex
19kHz
Coil
Multiplex
38kHz
Coil
T13,
14
SLT-3H4
T15
SLT-5L18-D
Input
Transformer
Power
Transformer
COMPONENT
COMBINATION
i
a
M1
EXA-F
2032471
0.02uUFZ,
4702
(two)
M2
EXA-5DL04C
4.7kQ
(two),
330pF
(three)
M3,
4
EXA-6FCO2
22kQ
(two),
10k2,
200pF
(two),
410pF
RESISTORS
R107,
109,
112,
114
ERD-14VJ270
272
1/4Watt
+5%
4{—__
Carbon
4
R10
ERD-14VJ470
472
1/4Watt
+5%
Carbon
1
R19,
26, 28,
41, 43,
48,
57,
127,
110
ERD-14VJ101
1002
1/4Watt
+5%
Carbon
9
R12
ERD-14VJ121
1202
1/4Watt
+5%
Carbon
1
R11,
18, 22,
25,
120,
121
ERD-14VJ221
2202
1/4Watt
+5%
Carbon
6
R24
ERD-14VJ331
3302
1/4Watt
+5%
Carbon
1
Bred
g
NO
ERD-14VJ391
3902
1/4Watt
+5%
—
Carbon
3
3
a
ae
78, 80,
ERD-14VJ471
4702
1/4Watt
—
+5%
Carbon
4
2
R9,
137
ERD-14VJ561
5602
1/4Watt
+5%
Carbon
2
R27,
65,
67
ERD-14VJ681
6802
1/4Watt
+5%
Carbon
3)
R21,
29,
30,
38,
49,
53,
54,55,
56,
84,
85,
94,
95
ERD-14VJ102
1kQ
1/4Watt
+5%
=
1G
Carbon
13
MODEL
SG-970A
REF.
NO.
R86,
88,
106,
108,111,113
PART
NO.
ERD-14VJ122
REPLACEMENT
PARTS
LIST
(Cont'd)
1.2kQ
DESCRIPTION
1/4Watt
+5%
Carbon
PER
SET
(pes.)
6
REMARKS
IF
|
AF
|
P.S
6
R23
ERD-14VJ182
1.8kQ
1/4Watt
+5%
Carbon
1
R4,
35,
45,
46,
52,
82,
83,
98,
99
ERD-14VJ222
2.2k0
1/4Watt
+5%
Carbon
R122
ERD-14VJ272
2.7kQ
1/4Watt
+5%
Carbon
R17,
20,
100,
101
ERD-14VJ332
R6,
31,
70,
71,
128,
129,
134
ERD-14VJ472
3.3k2
1/4Watt
+5%
Carbon
4.7kQ
1/4Watt
+5%
Carbon
R5,
47,
64,
66
R16,
40,
136
R68,
69,
74,
76,
79
ERD-14VJ562
ERD-14VJ682
5.6kQ
6.8k2
1/4Watt
+5%
Carbon
1/4Watt
+5%
Carbon
ERD-14VJ822
8.2k2
1/4Watt
+5%
Carbon
R42,
72,
73,
81,102,
103
ERD-14VJ103
10kQ
1/4Watt
+5%
R91,
93
ERD-14VJ153
R7,
34
|
15k2
1/4Watt
15%
Carbon
$2.
$$
Carbon
ERD-14VJ223
22kQ
R44
R90,
92
R8
ERD-14VJ473
47kQ
1/4Watt
+5%
Carbon
1/4Watt
+5%
Carbon
ERD-14VJ563
ERD-14VJ683
56k.
68kQ
1/4Watt
1/4Watt
+5%
+5%
Carbon
Carbon
R75,
77,
130,
131
ERD-14VJ823
82kQ
R13,
32,
60,
61,
96,
97
ERD-14VJ104
100k2
1/4Watt
1/4Watt
+5%
+5%
Carbon
Carbon
R2,
14, 36,
132,
133
ERD-14VJ224
220k2
1/4Watt
R39
R1,
15,
62,
63
R135
ERD-14VJ334
ERD-14VJ474
330k2
470k
1/4Watt
1/4Watt
+5%
Carbon
+5%
Carbon
+5%
Carbon
ERD-14TJ330
332
1/4Watt
+5%
Carbon
=
R123,
124
R89
ERD-14TJ331
3302
1/4Watt
ERD-14TJ391
3902
1/4Watt
+5%
+5%
Carbon
Carbon
R33
ERD-14TJ103
10kQ
1/4Watt
+5%
Carbon
R51
ERD-1PZK680
R50
ERC-12GK681
R126
ERC-12GM105
682.
1Watt
+10%
Carbon
6802
1/2Watt
+10%
Solid
IMQ
1/2Watt
R115,
116,
117,
118
ERM-12P1R5
1.52
1/2Watt
+20%
Solid
+10%
Wire
CAPACITORS
C7,9
|
ECC-D05010C
50WV
+0.25pF
Cefamic
C20,
30
ECC-D05020C
SOWV
+0.25pF
Ceramic
C3,
5,
28
ECC-D05040C
50WV
+0.25pF
Ceramic
C107
ECC-D05050C
50WV
+0.25pF
Ceramic
C12,
15,
29
ECC-D05070C
50WV
+0.25pF
a04G:=
Ceramic

MODEL
SG-970A
REPLACEMENT
PARTS
LIST
(Cont'd)
PER
SET
REMARKS
NO.
PA
REF.NO
RT
NO
DESCRIPTION
(pcs.)
[RE
|
IF
|
AF
[P.S|
CH
C104,
106
ECC-D05100F
10pF
50WV
H1pF
Ceramic
2 2
C11
ECC-D05150K
15pF
50WV
+10%
Ceramic
1 1
ECC-D05180K
18pF
5OWV
+10%
Ceramic
2
2
C1,
14
C32
ECC-D05470K
47pF
50WV
+10%
Ceramic
C91,
92
ECC-D05101K
100pF
50WV
+10%
Ceramic
C2,
4,
13
ECK-D05102MY
0.001nF
SOWV
+20%
Ceramic
C8,
18,
19,
21,
22
ECK-D05103MY
0.01uF
50WV
+20%
Ceramic
C55,
93, 94,
+80%
97,
98
—20%
C10,
16,
105,
+80%
25,
35,
52,
ECK-D05203ZV
0.022uF
50WV
20%
Ceramic
17,
108,
109
°
ECK-D05103ZV
0.01uF
50WV
Ceramic
C27,
31
UKD-12J223M
0.022uF
S50WV
+20%
Ceramic
+100%
—0%
150pF
SOWV
+5%
Styrol
1
1
C101
BP-21
100pF
1400WV
Ceramic
1 1
C37
ECQ-S05121JZ
a
|
C6
ECQ-S05181KZ
180pF
50WV
+10%
Styrol
1
1
C24,
46
ECQ-S05152KZ
1500p
F
50WV
+10%
Styrol
2 2
C43
ECQ-S05182JZ
1800p
F
50WV
+5%
Styrol
C23,
33
ECQ-S05271JZ
270pF
50WV
+5%
Styrol
2
2
C40,
44
ECQ-S05472KZ
4700pF
50WV
+10%
Styrol
C47,
48
ECQ-M05222MZ
0.0022uF
SOWV
+20%
Polyester
2 2
C42,
56,
57
ECQ-M05103MZ
0.01uF
50WV
+20%
Polyester
3
1
2
C39
+20%
ECQ-M05153MZ
0.015uF
SOWV
Polyester
C45
ECQ-M05223MZ
0.022uF
50WV
+20%
Polyester
1 1
C68,
69
ECQ-M05563MZ
0.056uF
SOWV
+20%
Polyester
2
2
10uF
6.3WV
Electrolytic
2
2
C70,
72
ECQ-M05683MZ
C75,
78
ECE-A6V
10N
C26,
58,61,
|
ECE-A6Vv33N
33uF
6.3WV
Electrolytic
5
1
|
4
86,
87
|
C84,
85,
103
ECE-A6V47N
47uF
6.3WV
Electrolytic
3
1
2
Scien
FOeM
ee
a
Cab:
88,
88,
|
ECE-A6V220N
220,F
6.3WV
Electrolytic
3
oo
10WV
C110
ECE-10V33N
33uF
Electrolytic
Sou"
oe”
8%
|
ECE-a10v220N
220uF
10WV
Electrolytic
4
1
|
2/1
C59,
60
C62,
63,
66,
67,
81,
82
C41,
102
ECE-A10V470N
470uF
10WV
Electrolytic
2
2
ECE-A16V3R3N
3.3uF
16WV
Electrolytic
6
6
ECE-A16V4R7N
4.7uF
16WV
Electrolytic
2
1
1
C51
ECE-A16V47N
47uF
16WV
Electrolytic
cg90,
99
ECE-A16V470N
470uF
16WV
Electrolytic
2
1
1
c49
ECE-A25V1N
1uF
25WV
Electrolytic
—90—=

MODEL
SG-970A
PART
NO.
ECE-B16V4R7N
DESCRIPTION
4.7uF
16WV
Electrolytic
REPLACEMENT
PARTS
LIST
(Cont’d)
PER
SET
(pes.)
REMARKS
IF
AF
|
P.S
|
CH
C95,
96
ECE-B16V2200
C64,
65
AL-10V0.1M
2200uF
16WV
Electrolytic
0.1nF
10WV
Electrolytic
AL-10V0.15M
AL-10V0.22M
AL-10V0.68M
ee
|
0.15uF
10WV
Electrolytic
0.22uF
10WV
Electrolytic
0.68uF
10WV
Electrolytic
VARIABLE
RESISTORS
EVG-K1AL35B54
50kQ
Loudnéss
Control
EVC-B2AL35G15
100kQ
Balance
Control
VR4,
5
EV
F-NOAL35B54
|
50k2
Treble
Control
(Left
&
Right)
VR6,
7
EVF-NOAL35B54
50k2
Bass
Control
(Left
&
Right)
VR8
(R37)
EVL-SOAA00B13
1kQ
FM
Separation
Adjust
VARIABLE
CAPACITORS
ECV-5XR27B18S
ECV-1ZW10P12
ESR-E245F30AE
Tuning
Capacitor
Trimmer
Capacitor
SWITCHES
Band
Selector
Switch
EVQ-BOGL30
SSH-10
ee
AFC
Switch
Power
Switch
Ass’y
SPEAKERS
EAS-16P
24SF
16
cm
PM
Dynamic
Speaker,
162
SXE-18
XAN43T
MISCELLANEOUS
Stay
Mechanism
Assembly
Dial
Light
Old
Part
No.
:
SVL-205
XAN37T
100
“Stereo’’
Light
Old
Part
No.
:
RVL-212-2
SHG-950
Rubber
Holder,
‘‘Stereo’’
Light
SDD-96
Dial
Pointer
SDH-98
RDD-60-3
Back
Plate,
Dial
Dial
Drum
RDS-414
Drum
Spring
RDR-14
Pulley
D,
Dial
SDT-1242
Tuning
Shaft
SDE-8
Shaft
Assembly,
Selector
Switch
SME-44
Shaft
Connector,
Selector
Switch
SR-3P-4
Bushing
SWJ-30
Pickup
Input
Cable
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