ep-70/90
Feb. 2000
20
CIRCUIT DIAGRAM (JACK, PHONES)
MIDI OUT
R+ RETURN
MIDI OUT
RES
R+ RETURN-H
R+ SEND-H
INPUT L
AGND
AGND
OUTPUT JACK MUTE
VREF
L+ SEND-H
A+9V
L- SEND-H
DC-IN
L+ SEND
AGND
INPUT R
RES
AMP POWER
AMP POWER
R+ SEND
AGND
AGND
SIGNAL L
SOFT
L- SEND
XPD-IN
OUTPUT L
MIDI IN
MIDI IN
STAND-BY
A+4.5V
SIGNAL R
OUTPUT R
DAMPER
A+4.5V
A+4.5V
Pre-SK
Pre-SK
POWER AGND
AVSS
A-GND-
D
D
+ 5
D
D
+ 5
D
+
A9
D
D
D
+ 5
D
D
D
D
D
D
+ 5
D
D
A
+ 5
D
D
+
A9
D
+ 5
D
+
A9
D
D
D
+ 5
D
+ 5
D
+ 5
D
D
+
A9
D
D
CN2
7P-SAN
1
1
2
2
3
3
4
4
5
5
6
6
7
7
IC1A
HD74LS04P
1
2
IC1B
HD74LS04P
3
4
Q1
DTA114ES
3
2
1
CN1
51048-1100
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
D8
1SS133
1
2
IC3B
LA4705
7
4
14
13
12
5
3
6
IC1D
HD74LS04P
9
8
IC1E
HD74LS04P
11
10
IC1F
HD74LS04P
13
12
IC1G
HD74LS04P
14
7
IC1C
HD74LS04P
5
6
JK7
HLJ7101-01-3010
1
2
4
JK6
HLJ7101-01-3010
1
2
4
JK2
HLJ7101-01-3010
1
2
4
JK3
HLJ7101-01-3010
1
2
4
IC5
M51953BL
NC
2
GND
3
RST
5
DLY
4
VCC
1
JK8
HEC2305-01-250
2
1
3
FL1
PLT1R53C
1
2
4
3
Q7
2SD667C
3
1
2
D7
1SS133
1
2
JK5
HLJ7101-01-3010
1
2
4
JK4
HLJ7101-01-3010
1
2
4
D3
1SS133
1
2
Q2
2SC2878A
3
1
2
D9
1SS133
1
2
IC3A
LA4705
2
15
16
17
8
1
9
10
11
18
Q3
2SC2878A
3
1
2
D1
1SS133
1
2
D6
1SS133
1
2
JK10
YKB21-5078
1
2
3
4
5
6
7
8
9
D2
1SS133
1
2
JK9
YKB21-5078
1
2
3
4
5
6
7
8
9
D5
1SS133
1
2
Q4
DTC114ES
3
1
2
C30
ECQB@
0.1
R31
2.2
C51
DD@
0.1
R20
68K
C31
ECA-M@
33/16
R8 220
R26
68K
C46
ECA-M@
33/16
R29
100
C4
DD@
0.1
C47
ECA-M@
100/16
C13
DD@
330P
R55
2.2
C57
DD@
0.1
R13 68
R3
6.8K
R28
1K
C18
DD@
0.1
R22
100
R5
(1/2W)
(1/2W)
(1/2W)
(1/2W)
(1/2W)
(1/2W)
(1/2W)
(1/2W)
68
R33
5.6K
R47
2.2
C60
DD@
0.1
C23
ECA-M@
33/16
C35
ECQB@
0.1
R41
2.2
C19
DD@
33P
C45
ECQB@
0.1
R64
68K
D10
1SR139-@
400
1
2
C38
ECA-M@
33/16
R16 68
R14
1K
R21
1K
C16
DD@
330P
R23
68K
R44
68K
C61
ECA-M@
100/16
R40
1K
C20
ECQB@
0.1
R56 10K
R38
68K
R17
1K
R58
3.3K
C12
DD@
330P
R48
5.6K
R15 68
R6
1K
C34
DD@
33P
R30
10K
R9
6.8K
R61
10K
C15
DD@
330P
C48
ECA-M@
33/16
C17
DD@
0.1
D12
1SR139-@
400
1
2
R12 68
R52
3.3K
R27
68K
R54
1K
R4
68
C32
ECA-M@
1/50
R42 10K
R45
10K
R7
220
C26
ECA-M@
1000/16
C41
ECA-M@
1000/16
C29
ECQB@
4700P
C44
ECQB@
4700P
R57
68K
R36
1K
R51
1K
R65
1K
R18
820
R24
820
CN4
B2B-XH-AM
1
1
2
2
R43
68K
R37
68K
CN5
IL-T-7P
1
1
2
2
3
3
4
4
5
5
6
6
7
7
R19
680
R25
680
C8
DD@
0.01
C3
DD@
0.01
C33
ECA-M@
1000/16
C2
ECEA-KA@
100/16
C6
ECEA-KA@
100/16
C7
ECEA-KA@
100/16
JK1
YKF51-5054
2
4
IN
OUT
2
4
5
5
12
14
15
22
24
25
30
40
50
60
C56
ECA-M@
10/16
C9
DD@
0.1
R11
100
D4
1SS133
1
2
R10
120
IC2
PC910
8
5
2
3
7
6
R1
68
C1
ECEA-KA@
100/16
R2
68
C5
DD@
0.1
R63
3.3K
R60
100
C53
ECA-M@
100/16
Q5
DTC114ES
3
1
2
R59
68K
C52
ECA-M@
33/16
R35
4.7K
R50
4.7K
IC7B
UPC4570HA
+
-
7
6
8
IC7C
UPC4570HA
+
-
1
5
9
C69
DD@
0.1
R73
47K
R72
680
C68
ECQB@
0.015
C67
ECQV@
0.082
IC7A
UPC4570HA
+
-
3
4
2
R67
47K
R66
680
C64
ECQB@
0.015
C63
ECQV@
0.082
R68
1K
R71
1K
R69
820
R70
820
C65
ECQV@
0.82
C66
ECQV@
0.82
C25
ECQV@
0.68
C40
ECQV@
0.68
CN6
B6B-PH-K-S
1
1
2
2
3
3
4
4
5
5
6
6
CN3
IL-S-5P-S2T2-EF
1
1
2
2
3
3
4
4
5
5
C24
ECA-M@
33/16
C39
ECA-M@
33/16
C14
ECA-M@
3.3/16
C11
ECA-M@
3.3/16
D14
1SS133
1
2
D13
MA7D49
1
2
SW1A
SDKLA1-B
1
2
SW1B
SDKLA1-B
10
20
IC4A
M5218AL
+
-
2
3
1
IC4B
M5218AL
+
-
6
5
7
IC4C
M5218AL
+
-
8
4
C42
ECQB@
0.1
C54
ECQB@
0.1
TER1
M1698
1
2
3
4
C58
DD@
0.1
C37
ECQB@
0.1
C59
ECA-M@
1000/16
C22
ECQB@
0.1
C49
DD@
0.1
C28
ECQB@
0.1
IC6
PQ05RD11
IN
1
OUT
2
OE
4
GND
3
C62
ECA-M@
100/16
TER2
M1698
1
2
3
4
C55
DD@
0.1
C10
DD@
0.1
C50
ECA-M@
1/50
R62
10K
Q8
2SC1815GR
3
1
2
To JACK BOARD CN3
& Speaker L
To PHONES BOARD
CN5
To SPEAKER R
To SWITCH BOARD
CN102
To MAIN BOARD
CN8
To MAIN BOARD
CN2
DC-IN
PHONES BOARD
JACK BOARD ASSY
IN
OUT
MIDI
Damper
Soft
OUTPUT
L/MONO
R
INPUT
L/MONO
R
／回路図 (JACK, PHONES)
