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44
HCD-BX3R/BX4R
IC310 PST3629NR
– AMP Board –
IC601 STK433-730S-E
VDD 2
OUT 1
GND 3
+
–
VREF
CD
5
NC
4
IC311 BA6956AN
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC321, 322 TC74HC4066AFT (EL)
1I/O
VCC
1
14
1C
13
4C
12
4I/O
11
4O/I
10
1O/I 2
2O/I 3
2I/O 4
2C 5
3C 6
GND 7
3O/I
9
3I/O
8
IC323 TC74VHC157FT (EKJ)
SELECT 11
1
1A
2
3
4
5
6
7
INPUT
INPUT
OUTPUT
OUTPUT
1A
1B
1Y
2A
2B
2Y
1B
1Y
2A
2B
2Y
GND 8
V
CC
STROBE
16
4A
15
14
13
11
12
11
10
INPUT
INPUT
OUTPUT
OUTPUT
G
4B
4Y
3A
4A
4B
4Y
3A
3B
9
3B
3Y
3Y
S
11
IN/1
10
MONITOR
13
ST-BY
4
CH1+
12
NF/1
8
+PRE
9
GND/SUB
2
-VCC
1
-PRE
3
+VCC
5
CH1-
PRE DRIVE
CH1
FINAL DRIVE
CH1
14
NF/2
6
CH2+
15
IN/2
7
CH2-
PRE DRIVE
CH2
FINAL DRIVE
CH2
STANDBY
CIRCUIT
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