Technics SH-8075 EH

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Catz 20022
C7 25v100
D12
(Band pass filter circuit and Power supply circuit)
41 42
Operation of muting circuit
0.7V
(Q1 Base)
—0.9V
Q1 ee)
Q2 Base
(Q2 Collector)
OV
Relay Relay
OFF
OFF
AC110/120/220/240V
(50/60Hz)
Power ON Power OFF a re
BLU BRN
qunmem (—23V) line POWER
SUPPLY
Quam
(+23)
line
51002
:
A C)
VOLTAGE © O
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|
POWER SUPPLY
31332
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(POWER)
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O
C1001
0.01
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SVD1S2076
D9 D140 D2
MAI220M MAIG62M = @9 MA50
22V ZENER 42V ZENER
at, 2 1C{ 1C2 DI
280458 AN18 M24. SvIuPC7918H SVD 1B4B42
MUTE SWITCHING +B VOLTAGE -B VOLTAGE RECT
RELAY DRIVE REGULATOR REGULATOR
REGULATOR
IC1 (AN78M24)
—= Output voltage 24V,
IC2 (SViu PC7918H) —~ Output voltage —18V,
Max. input yaoltage 40V
Max. input veltage —35V
Peak output current 0.7A,
Peak output current 2.1A,
30)