Realistic STA-78 - Schematic Diagram

20.
SCHEMATIC DIAGRAM
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NOTE:
PHONO
TAPE
oUI
TAPE
IN
AUX
DUB.OIJT
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(1)
Ss-1
-
Ss-7:
FUNCTION
SELECTOR
SWITCH
POSITION;
1
-AM,
2-
FM,
3-PHONO,4-AUx, C-COMMON.
(2)
Ps-1
-
Ps-2:
POWER
SWITCH
(3)
Sp-l
-
Sp-4:
SPEAKER SELECTOR
SWITCH.
POSITION:
1
-OUT,
2-
A,3-A, REV.
4
-8,5-A+
B
(4)
ALL RESISTANCE
VALUES
ARE INDICATED IN
,,OHM,,.
(K_
103
OHM, M
_
106 OHM)i
ToNE AMP P,
c,
B
(5)
ALL
CAPACITANCE VALUES ARE
INDICATED lN
"pF".
(P
-
1O-6pF)
(6) (
}
VALUES
IN MAIN AMP
STAGE ARE
USED
FOR
C,S,A.
MODELS ONLY.
(7}
ALL
VOLTAGES ARE MEASURED TO
CHASSIS
GROUND WITH A VOLTMETER
(10
K
OHM/V}
(8)
VOLTAGES
ARE MEASURED
UNDER
TWO
CONDITIONS:
WITH NO INPUT
AND
AT
22W
11
kHz) OUTPUT
POWER
(INSIDE
PARETHESIS).
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