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〔10〕 CIRCUIT DIAGRAM
1
2
3
KEP‑539
ANALOG
A
‑12V
12V
CN1
●
●
1
1
B13B‑PH‑K‑S
1
2
2
A‑12
2
AGND
●
●
●
3
AGND
4
A+12
B
5
SIG‑MR
6
SIG‑ML
7
SPMUTE
8
HPMUTE
HP SW
9
SIG‑SR
10
SIG‑SL
11
LINE‑R
12
C
LINE‑L
13
●
1
D
2
1
2
E
CN2
B6B‑PH‑K‑S
F
1
2
3
4
5
●
6
●
G
U3(3/3)
NJM4580L
4
H
V‑
1
●
473C/16V
I
J
1
2
3
KEP‑539
RELAY
A
CN6
B
B11B‑PH‑K‑S
GND
1
+5V
2
3
VO
4
RSTX
PNLSS
5
PNLSCK
6
●
C
7
PNLSDI
8
PNLSDO
9
PNLACK
10
PWAIT
11
NC
D
3.3V
E
●
1
2
CN7
B9B‑PH‑K‑S
2
1
GND
1
●
●
2
+5V
●
MIN
3
MOUT
4
●
F
+3.3V
5
UACK
6
SEL
7
8
FPGAI
FPGAO
9
1
1
2
2
G
●
●
1
2
H
●
I
FPGAI
FPGAO
4
5
6
SPMUTE
(1‑15J)
U1(3/3)
HPMUTE
(1‑5J)
NJM4580L
4
HP‑IN
(1‑15G)
V‑
●
C14
473C/16V
●
●
U2(3/3)
NJM4580L
●
4
V‑
V+
2
2
1
2
●
C5
473C/16V
1
1
2
2
1
1
C26
101C/50V
1
2
R20
682R
1
2
C24
R19
10UF/16V
103R
2
1
1
2
2
●
●
●
1
1
●
2
3
●
●
C25
U3(1/3)
471C/50V
NJM4580L
C29
101C/50V
1
2
R23
682R
12V
1
2
R22
103R
6
1
1
2
2
●
1
7
C27
●
●
8
V+
●
10UF/16V
2
5
●
●
C28
U3(2/3)
471C/50V
NJM4580L
2
C23
1
2
(3‑2C)
REF1
15V
(1‑9I)
(1‑9C)
(1‑11D)
Q3
DTA114ES
1
2
●
2
3
2
1
3
●
2
1
3
(1‑5A)
HPMUTE
1
4
5
6
●
●
2
2
1
1
●
●
●
●
●
1
2
R45
●
●
1
2
R44
(SelectA:MIDI)
(SelectB:USB)
●
1
1
U5
TC74HCT157
2
1
16
2
SELECT
VCC
1
2
15
●
1A
STROBE
3
14
1B
4A
●
●
4
13
2
1Y
4B
●
5
12
2A
4Y
6
11
2B
3A
●
7
10
2Y
3B
●
8
9
1
1
GND
3Y
2
2
●
●
●
●
(2‑13C)
(2‑13C)
7
8
9
10
C8
101C/50V
R6
C6
●
R5
10UF/16V
103R
1
2
6
●
1
1
2
12V
5
●
2
C7
471C/50V
8
V+
●
C12
101C/50V
1
2
R11
C10
●
R10
10UF/16V
103R
1
2
2
●
1
2
1
3
●
●
2
C11
471C/50V
(3‑2C)
REF1
(1‑9I)
(1‑11D)
(1‑5I)
12V
C16
101C/50V
1
2
R15
472R
8
1
2
●
R16
C15
103R
10UF/16V
1
2
1
2
●
1
2
1
●
3
U2(1/3)
●
●
2
NJM4580L
C17
471C/50V
C20
101C/50V
1
2
R17
472R
1
2
●
●
R18
C19
103R
10UF/16V
6
1
2
●
1
1
2
7
●
5
U2(2/3)
●
2
NJM4580L
C21
471C/50V
C32
221C/50V
1
R30
1
C96
C30
R29
●
R25
10UF/16V
102R
10UF/16V
2.7K
6
1
2
1
1
2
2
●
●
●
●
1
2
1
R26
5
1
2
●
103R
2
U4(2/3)
1
2
3
C31
NJM4556AD
2
1
471C/50V
C36
221C/50V
1
R35
1
C97
●
R27
C34
R34
10UF/16V
102R
10UF/16V
2.7K
1
2
1
1
2
2
2
●
●
●
1
2
1
R28
3
1
2
103R
●
●
2
U4(1/3)
●
2
3
1
C35
NJM4556AD
471C/50V
2
1
1
2
(3‑2C)
REF1
(1‑9C)
(1‑11D)
(1‑5I)
●
7
8
9
10
●
●
3.3V
CN8
●
●
B5B‑PH‑K‑S
1
GND
1
1
2
+5V
3
MIN
2
2
4
MOUT
5
NC
●
6
●
7
8
1
9
2
●
●
– 60 –
11
12
13
1
2
103R
●
1
2
C9
C88
10UF/16V
10UF/16V
7
Rch
●
●
1
2
1
1
U1(2/3)
1
NJM4580L
2
2
1
C89
●
10UF/16V
2
1
2
1
2
3
R8
103R
1
103R
●
1
2
C13
10UF/16V
1
●
●
1
2
U1(1/3)
1
1
NJM4580L
Lch
2
2
●
2
●
1
2
3
R13
1
103R
C18
Rch
10UF/16V
1
2
R94
103R
1
2
●
REF1
(3‑2C)
(1‑9I)
(1‑9C)
1
(1‑5I)
2
C22
Lch
10UF/16V
1
2
2
103R
2
●
C33
Rch
47UF/16V
7
●
●
1
2
1
1
2
2
Lch
●
2
●
1
2
3
R32
1
102R
2
103R
2
●
C37
47UF/16V
1
●
●
1
2
1
1
2
2
2
●
●
2
3
1
R37
1
102R
11
12
13
1
2
●
●
●
(2‑3I)
(2‑3I)
●
●
1
1
U6
74HCT245N
2
2
1
20
DIR
VCC
2
19
A1
OE
●
3
18
A2
B1
●
4
17
●
A3
B2
5
16
A4
B3
6
15
A5
B4
●
7
14
●
A6
B5
8
13
●
A7
B6
9
12
A8
B7
●
10
11
GND
B8
●
1
1
1
2
2
2
●
●
●
●
FG
R57
222R
1
2
●
R58
222R
1
2
●
R59
222R
1
2
●
1
1
1
2
2
2
●
●
14
15
16
CN3
B8B‑PH‑K‑S
1
SOR
2
2
AGND
3
SOL
2
4
SIR
5
AGND
●
6
SIL
7
AGND
●
8
FGND
FG
CN4
B7B‑PH‑K‑S
1
HPR1
2
AGND
3
HPL1
(1‑5A)
HP‑IN
4
HPIN
5
FGND
6
FGND
●
7
FGND
●
12V
FG
U4(3/3)
NJM4556AD
4
8
V‑
V+
●
1
2
●
C38
104C/50V
CN5
B5P‑VH
1
SIGR
2
AGND
3
SIGL
4
AGND
●
(1‑5A)
SPMUTE
5
SPMUTE
14
15
16
3.3V
●
●
●
1
2
1
CN9
1
2
2
B14B‑PH‑K‑S
●
1
GND
2
GND
●
3
+5V
●
4
+5V
●
●
5
+3.3V
6
RSTX
7
FPGAI
FPGAO
8
FPGAO
FPGAI
9
FPGAO
12V
10
LEDG
11
LEDG
●
12
●
LEDV
13
LEDV
14
NC
●
●
●
CN10
3.3V
1
1
B10B‑PH‑K‑S
2
2
1
GND
●
2
+3.3V
3
+5V
●
4
PWAIT
5
PNLACK
R63
331R
6
PNLSS
1
2
R64
331R
7
PNLSCK
1
2
R65
331R
8
PNLSDI
1
2
9
PNLSDO
10
FPGAO
FG
CN11
B2B‑PH‑K‑S
R67
1
1
2
2
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