National SG-970A Service 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
<EXPORT DIVISION)
MATSUSHITA ELECTRIC
TRADING CO.,
LTD. MATSUSHITA
ELECTRIC INDUSTRIAL
CO., LTD.
P.O. Box 288, Central
Osaka, Japan
RADIO
and STEREO DIVISION