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7
• IC Block Diagrams
1
2
3
4
5
6
7
8
9
TR3
R1
R2
TR4
TR6
TR7
R4
R9
TR5
TR1
TR2
R6
D4 D3
R7
R8
TR8
D1 D2
R5
R3
INPUT
NF
-VEOUT
+VEOUT
V
SS
GND
V
CC
SUB
IC303
µPC1237HA (MAIN Board)
IC602
NJM2072D (AUTO POWER Board)
1
2
3
4
5
6
7
8
INPUT
GAIN CONT
AMP OUT
GND
VCC
OUTPUT1
RECOVERY
TIME CAP
TIME CAP
OUTPUT2
1
2
3
4
5
6
7
8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
OVER LOAD DET
OFFSET DET
AUTO RESET
AC OFF DET
GND
RELAY DRIVE
VCC ON MUTE
VCC
IC301
STK350-230 (MAIN Board)
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